projects/ldc: druntime/src/compiler/dmd/deh.c annotate

author	Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
date	Tue, 11 Nov 2008 01:52:37 +0100
parents
children

rev	line source
759 d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	1 //
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	2 // Copyright (c) 1999-2003 by Digital Mars, www.digitalmars.com
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	3 // All Rights Reserved
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	4 // Written by Walter Bright
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	5
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	6 // Exception handling support
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	7
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	8 #include <stdio.h>
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	9 #include <string.h>
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	10 #include <assert.h>
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	11 #include <stdlib.h>
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	12
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	13 /* ======================== Win32 =============================== */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	14
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	15 #if _WIN32
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	16
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	17 #include <excpt.h>
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	18 #include <windows.h>
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	19
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	20 //#include "\sc\src\include\ehsup.h"
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	21
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	22 /* From Digital Mars C runtime library */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	23 EXCEPTION_DISPOSITION __cdecl _local_except_handler (EXCEPTION_RECORD *ExceptionRecord,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	24 void* EstablisherFrame,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	25 void *ContextRecord,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	26 void *DispatcherContext
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	27 );
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	28 void __cdecl _global_unwind(void frame,EXCEPTION_RECORD eRecord);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	29 #define EXCEPTION_UNWIND 6 // Flag to indicate if the system is unwinding
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	30
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	31 extern DWORD _except_list;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	32 /* */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	33
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	34 #include "mars.h"
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	35
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	36 extern ClassInfo D6object9Throwable7__ClassZ;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	37 #define _Class_9Throwable D6object9Throwable7__ClassZ;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	38
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	39 extern ClassInfo D6object5Error7__ClassZ;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	40 #define _Class_5Error D6object5Error7__ClassZ
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	41
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	42 typedef int (__pascal *fp_t)(); // function pointer in ambient memory model
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	43
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	44 // The layout of DEstablisherFrame is the same for C++
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	45
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	46 struct DEstablisherFrame
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	47 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	48 void *prev; // pointer to previous exception list
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	49 void *handler; // pointer to routine for exception handler
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	50 DWORD table_index; // current index into handler_info[]
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	51 DWORD ebp; // this is EBP of routine
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	52 };
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	53
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	54 struct DHandlerInfo
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	55 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	56 int prev_index; // previous table index
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	57 unsigned cioffset; // offset to DCatchInfo data from start of table (!=0 if try-catch)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	58 void *finally_code; // pointer to finally code to execute
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	59 // (!=0 if try-finally)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	60 };
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	61
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	62 // Address of DHandlerTable is passed in EAX to _d_framehandler()
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	63
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	64 struct DHandlerTable
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	65 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	66 void *fptr; // pointer to start of function
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	67 unsigned espoffset; // offset of ESP from EBP
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	68 unsigned retoffset; // offset from start of function to return code
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	69 struct DHandlerInfo handler_info[1];
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	70 };
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	71
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	72 struct DCatchBlock
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	73 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	74 ClassInfo *type; // catch type
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	75 unsigned bpoffset; // EBP offset of catch var
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	76 void *code; // catch handler code
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	77 };
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	78
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	79 // Create one of these for each try-catch
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	80 struct DCatchInfo
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	81 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	82 unsigned ncatches; // number of catch blocks
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	83 struct DCatchBlock catch_block[1]; // data for each catch block
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	84 };
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	85
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	86 // Macro to make our own exception code
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	87 #define MAKE_EXCEPTION_CODE(severity, facility, exception) \
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	88 (((severity) << 30) \| (1 << 29) \| (0 << 28) \| ((facility) << 16) \| (exception))
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	89
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	90 #define STATUS_DIGITAL_MARS_D_EXCEPTION MAKE_EXCEPTION_CODE(3,'D',1)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	91
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	92 Object _d_translate_se_to_d_exception(EXCEPTION_RECORD exception_record);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	93 void __cdecl _d_local_unwind(struct DHandlerTable handler_table, struct DEstablisherFrame frame, int stop_index);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	94
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	95
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	96 /***********************************
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	97 * The frame handler, this is called for each frame that has been registered
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	98 * in the OS except_list.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	99 * Input:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	100 * EAX the handler table for the frame
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	101 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	102
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	103 EXCEPTION_DISPOSITION _d_framehandler(
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	104 EXCEPTION_RECORD *exception_record,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	105 struct DEstablisherFrame *frame,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	106 CONTEXT context,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	107 void *dispatcher_context)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	108 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	109 struct DHandlerTable *handler_table;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	110
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	111 __asm { mov handler_table,EAX }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	112
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	113 if (exception_record->ExceptionFlags & EXCEPTION_UNWIND)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	114 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	115 // Call all the finally blocks in this frame
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	116 _d_local_unwind(handler_table, frame, -1);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	117 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	118 else
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	119 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	120 // Jump to catch block if matching one is found
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	121
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	122 int ndx,prev_ndx,i;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	123 struct DHandlerInfo *phi;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	124 struct DCatchInfo *pci;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	125 struct DCatchBlock *pcb;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	126 unsigned ncatches; // number of catches in the current handler
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	127 Object *pti;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	128 ClassInfo *ci;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	129
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	130 ci = NULL; // only compute it if we need it
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	131
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	132 // walk through handler table, checking each handler
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	133 // with an index smaller than the current table_index
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	134 for (ndx = frame->table_index; ndx != -1; ndx = prev_ndx)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	135 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	136 phi = &handler_table->handler_info[ndx];
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	137 prev_ndx = phi->prev_index;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	138 if (phi->cioffset)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	139 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	140 // this is a catch handler (no finally)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	141 pci = (struct DCatchInfo )((char )handler_table + phi->cioffset);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	142 ncatches = pci->ncatches;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	143 for (i = 0; i < ncatches; i++)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	144 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	145 pcb = &pci->catch_block[i];
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	146
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	147 if (!ci)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	148 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	149 // This code must match the translation code
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	150 if (exception_record->ExceptionCode == STATUS_DIGITAL_MARS_D_EXCEPTION)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	151 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	152 //printf("ei[0] = %p\n", exception_record->ExceptionInformation[0]);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	153 ci = (ClassInfo *)(exception_record->ExceptionInformation[0]);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	154 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	155 else
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	156 ci = &_Class_9Throwable;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	157 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	158
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	159 if (_d_isbaseof(ci, pcb->type))
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	160 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	161 // Matched the catch type, so we've found the handler.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	162 int regebp;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	163
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	164 pti = _d_translate_se_to_d_exception(exception_record);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	165
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	166 // Initialize catch variable
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	167 regebp = (int)&frame->ebp; // EBP for this frame
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	168 (void *)(regebp + (pcb->bpoffset)) = pti;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	169
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	170 // Have system call all finally blocks in intervening frames
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	171 _global_unwind(frame, exception_record);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	172
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	173 // Call all the finally blocks skipped in this frame
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	174 _d_local_unwind(handler_table, frame, ndx);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	175
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	176 frame->table_index = prev_ndx; // we are out of this handler
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	177
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	178 // Jump to catch block. Does not return.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	179 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	180 unsigned catch_esp;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	181 fp_t catch_addr;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	182
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	183 catch_addr = (fp_t)(pcb->code);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	184 catch_esp = regebp - handler_table->espoffset - sizeof(fp_t);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	185 _asm
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	186 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	187 mov EAX,catch_esp
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	188 mov ECX,catch_addr
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	189 mov [EAX],ECX
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	190 mov EBP,regebp
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	191 mov ESP,EAX // reset stack
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	192 ret // jump to catch block
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	193 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	194 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	195 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	196 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	197 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	198 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	199 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	200 return ExceptionContinueSearch;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	201 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	202
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	203 /***********************************
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	204 * Exception filter for use in __try..__except block
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	205 * surrounding call to Dmain()
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	206 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	207
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	208 int _d_exception_filter(struct _EXCEPTION_POINTERS *eptrs,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	209 int retval,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	210 Object **exception_object)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	211 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	212 *exception_object = _d_translate_se_to_d_exception(eptrs->ExceptionRecord);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	213 return retval;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	214 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	215
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	216 /***********************************
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	217 * Throw a D object.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	218 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	219
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	220 void __stdcall _d_throw(Object *h)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	221 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	222 //printf("_d_throw(h = %p, &h = %p)\n", h, &h);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	223 //printf("\tvptr = %p\n", (void *)h);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	224 RaiseException(STATUS_DIGITAL_MARS_D_EXCEPTION,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	225 EXCEPTION_NONCONTINUABLE,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	226 1, (DWORD *)&h);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	227 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	228
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	229 /***********************************
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	230 * Create an exception object
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	231 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	232
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	233 Object _d_create_exception_object(ClassInfo ci, char *msg)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	234 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	235 Throwable *exc;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	236
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	237 exc = (Throwable *)_d_newclass(ci);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	238 // BUG: what if _d_newclass() throws an out of memory exception?
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	239
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	240 if (msg)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	241 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	242 exc->msglen = strlen(msg);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	243 exc->msg = msg;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	244 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	245 return (Object *)exc;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	246 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	247
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	248 /***********************************
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	249 * Converts a Windows Structured Exception code to a D Exception Object.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	250 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	251
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	252 Object _d_translate_se_to_d_exception(EXCEPTION_RECORD exception_record)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	253 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	254 Object *pti;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	255
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	256 switch (exception_record->ExceptionCode) {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	257 case STATUS_DIGITAL_MARS_D_EXCEPTION:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	258 // Generated D exception
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	259 pti = (Object *)(exception_record->ExceptionInformation[0]);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	260 break;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	261
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	262 case STATUS_INTEGER_DIVIDE_BY_ZERO:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	263 pti = _d_create_exception_object(&_Class_5Error, "Integer Divide by Zero");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	264 break;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	265
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	266 case STATUS_FLOAT_DIVIDE_BY_ZERO:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	267 pti = _d_create_exception_object(&_Class_5Error, "Float Divide by Zero");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	268 break;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	269
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	270 case STATUS_ACCESS_VIOLATION:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	271 pti = _d_create_exception_object(&_Class_5Error, "Access Violation");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	272 break;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	273
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	274 case STATUS_STACK_OVERFLOW:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	275 pti = _d_create_exception_object(&_Class_5Error, "Stack Overflow");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	276 break;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	277
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	278 // convert all other exception codes into a Win32Exception
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	279 default:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	280 pti = _d_create_exception_object(&_Class_5Error, "Win32 Exception");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	281 break;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	282 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	283
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	284 return pti;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	285 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	286
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	287 /**************************************
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	288 * Call finally blocks in the current stack frame until stop_index.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	289 * This is roughly equivalent to _local_unwind() for C in \src\win32\ehsup.c
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	290 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	291
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	292 void __cdecl _d_local_unwind(struct DHandlerTable *handler_table,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	293 struct DEstablisherFrame *frame, int stop_index)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	294 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	295 struct DHandlerInfo *phi;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	296 struct DCatchInfo *pci;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	297 int i;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	298
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	299 // Set up a special exception handler to catch double-fault exceptions.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	300 __asm
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	301 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	302 push dword ptr -1
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	303 push dword ptr 0
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	304 push offset _local_except_handler // defined in src\win32\ehsup.c
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	305 push dword ptr fs:_except_list
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	306 mov FS:_except_list,ESP
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	307 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	308
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	309 for (i = frame->table_index; i != -1 && i != stop_index; i = phi->prev_index)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	310 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	311 phi = &handler_table->handler_info[i];
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	312 if (phi->finally_code)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	313 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	314 // Note that it is unnecessary to adjust the ESP, as the finally block
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	315 // accesses all items on the stack as relative to EBP.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	316
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	317 DWORD *catch_ebp = &frame->ebp;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	318 void *blockaddr = phi->finally_code;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	319
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	320 _asm
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	321 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	322 push EBX
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	323 mov EBX,blockaddr
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	324 push EBP
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	325 mov EBP,catch_ebp
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	326 call EBX
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	327 pop EBP
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	328 pop EBX
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	329 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	330 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	331 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	332
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	333 _asm
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	334 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	335 pop FS:_except_list
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	336 add ESP,12
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	337 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	338 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	339
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	340 /***********************************
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	341 * external version of the unwinder
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	342 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	343
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	344 __declspec(naked) void __cdecl _d_local_unwind2()
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	345 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	346 __asm
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	347 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	348 jmp _d_local_unwind
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	349 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	350 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	351
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	352 /***********************************
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	353 * The frame handler, this is called for each frame that has been registered
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	354 * in the OS except_list.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	355 * Input:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	356 * EAX the handler table for the frame
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	357 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	358
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	359 EXCEPTION_DISPOSITION _d_monitor_handler(
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	360 EXCEPTION_RECORD *exception_record,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	361 struct DEstablisherFrame *frame,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	362 CONTEXT context,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	363 void *dispatcher_context)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	364 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	365 if (exception_record->ExceptionFlags & EXCEPTION_UNWIND)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	366 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	367 _d_monitorexit((Object *)frame->table_index);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	368 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	369 else
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	370 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	371 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	372 return ExceptionContinueSearch;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	373 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	374
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	375 /***********************************
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	376 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	377
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	378 void _d_monitor_prolog(void x, void y, Object *h)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	379 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	380 __asm
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	381 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	382 push EAX
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	383 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	384 //printf("_d_monitor_prolog(x=%p, y=%p, h=%p)\n", x, y, h);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	385 _d_monitorenter(h);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	386 __asm
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	387 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	388 pop EAX
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	389 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	390 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	391
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	392 /***********************************
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	393 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	394
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	395 void _d_monitor_epilog(void x, void y, Object *h)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	396 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	397 //printf("_d_monitor_epilog(x=%p, y=%p, h=%p)\n", x, y, h);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	398 __asm
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	399 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	400 push EAX
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	401 push EDX
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	402 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	403 _d_monitorexit(h);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	404 __asm
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	405 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	406 pop EDX
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	407 pop EAX
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	408 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	409 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	410
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	411 #endif
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	412
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	413 /* ======================== linux =============================== */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	414
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	415 #if linux
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	416
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	417 #include "mars.h"
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	418
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	419 extern ClassInfo D6object9Throwable7__ClassZ;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	420 #define _Class_9Throwable D6object9Throwable7__ClassZ;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	421
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	422 extern ClassInfo D6object5Error7__ClassZ;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	423 #define _Class_5Error D6object5Error7__ClassZ
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	424
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	425 typedef int (*fp_t)(); // function pointer in ambient memory model
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	426
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	427 struct DHandlerInfo
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	428 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	429 unsigned offset; // offset from function address to start of guarded section
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	430 int prev_index; // previous table index
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	431 unsigned cioffset; // offset to DCatchInfo data from start of table (!=0 if try-catch)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	432 void *finally_code; // pointer to finally code to execute
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	433 // (!=0 if try-finally)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	434 };
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	435
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	436 // Address of DHandlerTable, searched for by eh_finddata()
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	437
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	438 struct DHandlerTable
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	439 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	440 void *fptr; // pointer to start of function
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	441 unsigned espoffset; // offset of ESP from EBP
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	442 unsigned retoffset; // offset from start of function to return code
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	443 unsigned nhandlers; // dimension of handler_info[]
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	444 struct DHandlerInfo handler_info[1];
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	445 };
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	446
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	447 struct DCatchBlock
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	448 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	449 ClassInfo *type; // catch type
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	450 unsigned bpoffset; // EBP offset of catch var
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	451 void *code; // catch handler code
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	452 };
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	453
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	454 // Create one of these for each try-catch
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	455 struct DCatchInfo
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	456 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	457 unsigned ncatches; // number of catch blocks
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	458 struct DCatchBlock catch_block[1]; // data for each catch block
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	459 };
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	460
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	461 // One of these is generated for each function with try-catch or try-finally
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	462
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	463 struct FuncTable
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	464 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	465 void *fptr; // pointer to start of function
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	466 struct DHandlerTable *handlertable; // eh data for this function
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	467 unsigned size; // size of function in bytes
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	468 };
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	469
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	470 extern struct FuncTable *table_start;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	471 extern struct FuncTable *table_end;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	472
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	473 void terminate()
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	474 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	475 // _asm
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	476 // {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	477 // hlt
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	478 // }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	479 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	480
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	481 /*******************************************
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	482 * Given address that is inside a function,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	483 * figure out which function it is in.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	484 * Return DHandlerTable if there is one, NULL if not.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	485 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	486
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	487 struct DHandlerTable __eh_finddata(void address)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	488 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	489 struct FuncTable *ft;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	490
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	491 for (ft = (struct FuncTable *)table_start;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	492 ft < (struct FuncTable *)table_end;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	493 ft++)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	494 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	495 if (ft->fptr <= address &&
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	496 address < (void )((char )ft->fptr + ft->size))
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	497 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	498 return ft->handlertable;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	499 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	500 }

759

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1 //

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4 // Written by Walter Bright

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5

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6 // Exception handling support

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7

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8 #include <stdio.h>

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9 #include <string.h>

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10 #include <assert.h>

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11 #include <stdlib.h>

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12

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13 /* ======================== Win32 =============================== */

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14

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15 #if _WIN32

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16

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17 #include <excpt.h>

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18 #include <windows.h>

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19

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20 //#include "\sc\src\include\ehsup.h"

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21

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22 /*** From Digital Mars C runtime library ***/

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23 EXCEPTION_DISPOSITION __cdecl _local_except_handler (EXCEPTION_RECORD *ExceptionRecord,

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24 void* EstablisherFrame,

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25 void *ContextRecord,

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26 void *DispatcherContext

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27 );

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28 void __cdecl _global_unwind(void *frame,EXCEPTION_RECORD *eRecord);

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29 #define EXCEPTION_UNWIND 6 // Flag to indicate if the system is unwinding

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30

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31 extern DWORD _except_list;

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32 /*** ***/

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33

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34 #include "mars.h"

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35

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36 extern ClassInfo D6object9Throwable7__ClassZ;

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37 #define _Class_9Throwable D6object9Throwable7__ClassZ;

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38

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39 extern ClassInfo D6object5Error7__ClassZ;

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40 #define _Class_5Error D6object5Error7__ClassZ

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41

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42 typedef int (__pascal *fp_t)(); // function pointer in ambient memory model

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43

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44 // The layout of DEstablisherFrame is the same for C++

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45

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46 struct DEstablisherFrame

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47 {

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48 void *prev; // pointer to previous exception list

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49 void *handler; // pointer to routine for exception handler

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50 DWORD table_index; // current index into handler_info[]

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51 DWORD ebp; // this is EBP of routine

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52 };

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53

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54 struct DHandlerInfo

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55 {

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56 int prev_index; // previous table index

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57 unsigned cioffset; // offset to DCatchInfo data from start of table (!=0 if try-catch)

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58 void *finally_code; // pointer to finally code to execute

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59 // (!=0 if try-finally)

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60 };

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61

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62 // Address of DHandlerTable is passed in EAX to _d_framehandler()

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63

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64 struct DHandlerTable

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65 {

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66 void *fptr; // pointer to start of function

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67 unsigned espoffset; // offset of ESP from EBP

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68 unsigned retoffset; // offset from start of function to return code

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69 struct DHandlerInfo handler_info[1];

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70 };

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71

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72 struct DCatchBlock

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73 {

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74 ClassInfo *type; // catch type

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75 unsigned bpoffset; // EBP offset of catch var

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76 void *code; // catch handler code

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77 };

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78

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79 // Create one of these for each try-catch

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80 struct DCatchInfo

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81 {

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82 unsigned ncatches; // number of catch blocks

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83 struct DCatchBlock catch_block[1]; // data for each catch block

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84 };

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85

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86 // Macro to make our own exception code

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87 #define MAKE_EXCEPTION_CODE(severity, facility, exception) \

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88 (((severity) << 30) | (1 << 29) | (0 << 28) | ((facility) << 16) | (exception))

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89

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90 #define STATUS_DIGITAL_MARS_D_EXCEPTION MAKE_EXCEPTION_CODE(3,'D',1)

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91

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92 Object *_d_translate_se_to_d_exception(EXCEPTION_RECORD *exception_record);

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93 void __cdecl _d_local_unwind(struct DHandlerTable *handler_table, struct DEstablisherFrame *frame, int stop_index);

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94

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95

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96 /***********************************

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97 * The frame handler, this is called for each frame that has been registered

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98 * in the OS except_list.

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99 * Input:

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100 * EAX the handler table for the frame

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101 */

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102

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103 EXCEPTION_DISPOSITION _d_framehandler(

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104 EXCEPTION_RECORD *exception_record,

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105 struct DEstablisherFrame *frame,

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106 CONTEXT context,

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107 void *dispatcher_context)

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108 {

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109 struct DHandlerTable *handler_table;

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110

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111 __asm { mov handler_table,EAX }

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112

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113 if (exception_record->ExceptionFlags & EXCEPTION_UNWIND)

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114 {

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115 // Call all the finally blocks in this frame

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116 _d_local_unwind(handler_table, frame, -1);

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117 }

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118 else

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119 {

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120 // Jump to catch block if matching one is found

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121

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122 int ndx,prev_ndx,i;

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123 struct DHandlerInfo *phi;

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124 struct DCatchInfo *pci;

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125 struct DCatchBlock *pcb;

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126 unsigned ncatches; // number of catches in the current handler

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127 Object *pti;

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128 ClassInfo *ci;

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129

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130 ci = NULL; // only compute it if we need it

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131

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132 // walk through handler table, checking each handler

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133 // with an index smaller than the current table_index

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134 for (ndx = frame->table_index; ndx != -1; ndx = prev_ndx)

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135 {

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136 phi = &handler_table->handler_info[ndx];

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137 prev_ndx = phi->prev_index;

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138 if (phi->cioffset)

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139 {

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140 // this is a catch handler (no finally)

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141 pci = (struct DCatchInfo *)((char *)handler_table + phi->cioffset);

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142 ncatches = pci->ncatches;

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143 for (i = 0; i < ncatches; i++)

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144 {

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145 pcb = &pci->catch_block[i];

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146

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147 if (!ci)

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148 {

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149 // This code must match the translation code

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150 if (exception_record->ExceptionCode == STATUS_DIGITAL_MARS_D_EXCEPTION)

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151 {

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152 //printf("ei[0] = %p\n", exception_record->ExceptionInformation[0]);

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153 ci = **(ClassInfo ***)(exception_record->ExceptionInformation[0]);

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154 }

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155 else

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156 ci = &_Class_9Throwable;

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157 }

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158

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159 if (_d_isbaseof(ci, pcb->type))

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160 {

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161 // Matched the catch type, so we've found the handler.

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162 int regebp;

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163

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164 pti = _d_translate_se_to_d_exception(exception_record);

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165

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166 // Initialize catch variable

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167 regebp = (int)&frame->ebp; // EBP for this frame

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168 *(void **)(regebp + (pcb->bpoffset)) = pti;

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169

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170 // Have system call all finally blocks in intervening frames

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171 _global_unwind(frame, exception_record);

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172

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173 // Call all the finally blocks skipped in this frame

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174 _d_local_unwind(handler_table, frame, ndx);

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175

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176 frame->table_index = prev_ndx; // we are out of this handler

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177

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178 // Jump to catch block. Does not return.

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179 {

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180 unsigned catch_esp;

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181 fp_t catch_addr;

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182

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183 catch_addr = (fp_t)(pcb->code);

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184 catch_esp = regebp - handler_table->espoffset - sizeof(fp_t);

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185 _asm

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186 {

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187 mov EAX,catch_esp

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188 mov ECX,catch_addr

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189 mov [EAX],ECX

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190 mov EBP,regebp

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191 mov ESP,EAX // reset stack

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192 ret // jump to catch block

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193 }

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194 }

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195 }

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196 }

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197 }

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198 }

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199 }

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200 return ExceptionContinueSearch;

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201 }

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202

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203 /***********************************

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204 * Exception filter for use in __try..__except block

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205 * surrounding call to Dmain()

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206 */

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207

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208 int _d_exception_filter(struct _EXCEPTION_POINTERS *eptrs,

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209 int retval,

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210 Object **exception_object)

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211 {

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212 *exception_object = _d_translate_se_to_d_exception(eptrs->ExceptionRecord);

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213 return retval;

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214 }

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215

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216 /***********************************

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217 * Throw a D object.

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218 */

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219

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220 void __stdcall _d_throw(Object *h)

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221 {

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222 //printf("_d_throw(h = %p, &h = %p)\n", h, &h);

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223 //printf("\tvptr = %p\n", *(void **)h);

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224 RaiseException(STATUS_DIGITAL_MARS_D_EXCEPTION,

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225 EXCEPTION_NONCONTINUABLE,

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226 1, (DWORD *)&h);

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227 }

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228

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229 /***********************************

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230 * Create an exception object

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231 */

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232

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233 Object *_d_create_exception_object(ClassInfo *ci, char *msg)

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234 {

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235 Throwable *exc;

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236

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237 exc = (Throwable *)_d_newclass(ci);

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238 // BUG: what if _d_newclass() throws an out of memory exception?

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239

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240 if (msg)

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241 {

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242 exc->msglen = strlen(msg);

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243 exc->msg = msg;

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244 }

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245 return (Object *)exc;

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246 }

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247

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248 /***********************************

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249 * Converts a Windows Structured Exception code to a D Exception Object.

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250 */

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251

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252 Object *_d_translate_se_to_d_exception(EXCEPTION_RECORD *exception_record)

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253 {

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254 Object *pti;

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255

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256 switch (exception_record->ExceptionCode) {

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257 case STATUS_DIGITAL_MARS_D_EXCEPTION:

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258 // Generated D exception

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259 pti = (Object *)(exception_record->ExceptionInformation[0]);

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260 break;

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261

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262 case STATUS_INTEGER_DIVIDE_BY_ZERO:

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263 pti = _d_create_exception_object(&_Class_5Error, "Integer Divide by Zero");

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264 break;

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265

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266 case STATUS_FLOAT_DIVIDE_BY_ZERO:

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267 pti = _d_create_exception_object(&_Class_5Error, "Float Divide by Zero");

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268 break;

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269

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270 case STATUS_ACCESS_VIOLATION:

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271 pti = _d_create_exception_object(&_Class_5Error, "Access Violation");

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272 break;

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273

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274 case STATUS_STACK_OVERFLOW:

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275 pti = _d_create_exception_object(&_Class_5Error, "Stack Overflow");

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276 break;

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277

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278 // convert all other exception codes into a Win32Exception

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279 default:

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280 pti = _d_create_exception_object(&_Class_5Error, "Win32 Exception");

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281 break;

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282 }

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283

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284 return pti;

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285 }

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diff changeset

286

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diff changeset

287 /**************************************

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288 * Call finally blocks in the current stack frame until stop_index.

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289 * This is roughly equivalent to _local_unwind() for C in \src\win32\ehsup.c

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diff changeset

290 */

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diff changeset

291

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292 void __cdecl _d_local_unwind(struct DHandlerTable *handler_table,

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293 struct DEstablisherFrame *frame, int stop_index)

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294 {

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295 struct DHandlerInfo *phi;

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296 struct DCatchInfo *pci;

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297 int i;

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298

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299 // Set up a special exception handler to catch double-fault exceptions.

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300 __asm

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301 {

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302 push dword ptr -1

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303 push dword ptr 0

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304 push offset _local_except_handler // defined in src\win32\ehsup.c

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305 push dword ptr fs:_except_list

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306 mov FS:_except_list,ESP

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307 }

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diff changeset

308

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309 for (i = frame->table_index; i != -1 && i != stop_index; i = phi->prev_index)

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310 {

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311 phi = &handler_table->handler_info[i];

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312 if (phi->finally_code)

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313 {

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314 // Note that it is unnecessary to adjust the ESP, as the finally block

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315 // accesses all items on the stack as relative to EBP.

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316

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317 DWORD *catch_ebp = &frame->ebp;

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318 void *blockaddr = phi->finally_code;

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319

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320 _asm

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321 {

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322 push EBX

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323 mov EBX,blockaddr

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324 push EBP

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325 mov EBP,catch_ebp

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326 call EBX

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327 pop EBP

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328 pop EBX

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329 }

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330 }

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331 }

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332

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333 _asm

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334 {

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335 pop FS:_except_list

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336 add ESP,12

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337 }

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338 }

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339

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340 /***********************************

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341 * external version of the unwinder

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342 */

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343

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344 __declspec(naked) void __cdecl _d_local_unwind2()

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345 {

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346 __asm

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347 {

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348 jmp _d_local_unwind

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349 }

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350 }

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351

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352 /***********************************

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353 * The frame handler, this is called for each frame that has been registered

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354 * in the OS except_list.

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355 * Input:

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356 * EAX the handler table for the frame

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357 */

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358

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359 EXCEPTION_DISPOSITION _d_monitor_handler(

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360 EXCEPTION_RECORD *exception_record,

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361 struct DEstablisherFrame *frame,

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diff changeset

362 CONTEXT context,

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363 void *dispatcher_context)

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364 {

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365 if (exception_record->ExceptionFlags & EXCEPTION_UNWIND)

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366 {

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367 _d_monitorexit((Object *)frame->table_index);

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368 }

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369 else

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370 {

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diff changeset

371 }

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372 return ExceptionContinueSearch;

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373 }

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diff changeset

374

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375 /***********************************

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376 */

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diff changeset

377

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378 void _d_monitor_prolog(void *x, void *y, Object *h)

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379 {

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380 __asm

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diff changeset

381 {

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diff changeset

382 push EAX

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383 }

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diff changeset

384 //printf("_d_monitor_prolog(x=%p, y=%p, h=%p)\n", x, y, h);

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diff changeset

385 _d_monitorenter(h);

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diff changeset

386 __asm

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diff changeset

387 {

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diff changeset

388 pop EAX

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diff changeset

389 }

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diff changeset

390 }

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diff changeset

391

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diff changeset

392 /***********************************

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diff changeset

393 */

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diff changeset

394

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diff changeset

395 void _d_monitor_epilog(void *x, void *y, Object *h)

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diff changeset

396 {

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diff changeset

397 //printf("_d_monitor_epilog(x=%p, y=%p, h=%p)\n", x, y, h);

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diff changeset

398 __asm

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diff changeset

399 {

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diff changeset

400 push EAX

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parents:

diff changeset

401 push EDX

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diff changeset

402 }

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diff changeset

403 _d_monitorexit(h);

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diff changeset

404 __asm

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diff changeset

405 {

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diff changeset

406 pop EDX

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diff changeset

407 pop EAX

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diff changeset

408 }

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diff changeset

409 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

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parents:

diff changeset

410

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diff changeset

411 #endif

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diff changeset

412

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diff changeset

413 /* ======================== linux =============================== */

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diff changeset

414

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diff changeset

415 #if linux

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diff changeset

416

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diff changeset

417 #include "mars.h"

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diff changeset

418

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diff changeset

419 extern ClassInfo D6object9Throwable7__ClassZ;

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diff changeset

420 #define _Class_9Throwable D6object9Throwable7__ClassZ;

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diff changeset

421

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diff changeset

422 extern ClassInfo D6object5Error7__ClassZ;

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diff changeset

423 #define _Class_5Error D6object5Error7__ClassZ

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diff changeset

424

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diff changeset

425 typedef int (*fp_t)(); // function pointer in ambient memory model

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diff changeset

426

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diff changeset

427 struct DHandlerInfo

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parents:

diff changeset

428 {

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diff changeset

429 unsigned offset; // offset from function address to start of guarded section

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parents:

diff changeset

430 int prev_index; // previous table index

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diff changeset

431 unsigned cioffset; // offset to DCatchInfo data from start of table (!=0 if try-catch)

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diff changeset

432 void *finally_code; // pointer to finally code to execute

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diff changeset

433 // (!=0 if try-finally)

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diff changeset

434 };

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parents:

diff changeset

435

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diff changeset

436 // Address of DHandlerTable, searched for by eh_finddata()

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diff changeset

437

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diff changeset

438 struct DHandlerTable

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diff changeset

439 {

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diff changeset

440 void *fptr; // pointer to start of function

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diff changeset

441 unsigned espoffset; // offset of ESP from EBP

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diff changeset

442 unsigned retoffset; // offset from start of function to return code

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diff changeset

443 unsigned nhandlers; // dimension of handler_info[]

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444 struct DHandlerInfo handler_info[1];

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diff changeset

445 };

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parents:

diff changeset

446

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

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diff changeset

447 struct DCatchBlock

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

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diff changeset

448 {

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diff changeset

449 ClassInfo *type; // catch type

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diff changeset

450 unsigned bpoffset; // EBP offset of catch var

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diff changeset

451 void *code; // catch handler code

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diff changeset

452 };

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diff changeset

453

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diff changeset

454 // Create one of these for each try-catch

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455 struct DCatchInfo

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456 {

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diff changeset

457 unsigned ncatches; // number of catch blocks

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diff changeset

458 struct DCatchBlock catch_block[1]; // data for each catch block

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diff changeset

459 };

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parents:

diff changeset

460

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

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diff changeset

461 // One of these is generated for each function with try-catch or try-finally

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diff changeset

462

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diff changeset

463 struct FuncTable

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

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464 {

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diff changeset

465 void *fptr; // pointer to start of function

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466 struct DHandlerTable *handlertable; // eh data for this function

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diff changeset

467 unsigned size; // size of function in bytes

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468 };

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diff changeset

469

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diff changeset

470 extern struct FuncTable *table_start;

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diff changeset

471 extern struct FuncTable *table_end;

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472

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473 void terminate()

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diff changeset

474 {

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

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diff changeset

475 // _asm

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

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diff changeset

476 // {

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

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diff changeset

477 // hlt

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

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diff changeset

478 // }

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479 }

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parents:

diff changeset

480

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diff changeset

481 /*******************************************

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diff changeset

482 * Given address that is inside a function,

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diff changeset

483 * figure out which function it is in.

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484 * Return DHandlerTable if there is one, NULL if not.

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485 */

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diff changeset

486

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diff changeset

487 struct DHandlerTable *__eh_finddata(void *address)

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diff changeset

488 {

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diff changeset

489 struct FuncTable *ft;

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diff changeset

490

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diff changeset

491 for (ft = (struct FuncTable *)table_start;

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diff changeset

492 ft < (struct FuncTable *)table_end;

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diff changeset

493 ft++)

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diff changeset

494 {

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diff changeset

495 if (ft->fptr <= address &&

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diff changeset

496 address < (void *)((char *)ft->fptr + ft->size))

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diff changeset

497 {

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498 return ft->handlertable;

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499 }

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diff changeset

500 }

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diff changeset

501 return NULL;

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parents:

diff changeset

502 }

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parents:

diff changeset

503

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

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parents:

diff changeset

504

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

505 /******************************

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parents:

diff changeset

506 * Given EBP, find return address to caller, and caller's EBP.

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diff changeset

507 * Input:

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diff changeset

508 * regbp Value of EBP for current function

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diff changeset

509 * *pretaddr Return address

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parents:

diff changeset

510 * Output:

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parents:

diff changeset

511 * *pretaddr return address to caller

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512 * Returns:

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

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diff changeset

513 * caller's EBP

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

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diff changeset

514 */

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parents:

diff changeset

515

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diff changeset

516 unsigned __eh_find_caller(unsigned regbp, unsigned *pretaddr)

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diff changeset

517 {

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parents:

diff changeset

518 unsigned bp = *(unsigned *)regbp;

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diff changeset

519

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diff changeset

520 if (bp) // if not end of call chain

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parents:

diff changeset

521 {

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parents:

diff changeset

522 // Perform sanity checks on new EBP.

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parents:

diff changeset

523 // If it is screwed up, terminate() hopefully before we do more damage.

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diff changeset

524 if (bp <= regbp)

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parents:

diff changeset

525 // stack should grow to smaller values

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diff changeset

526 terminate();

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parents:

diff changeset

527

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diff changeset

528 *pretaddr = *(unsigned *)(regbp + sizeof(int));

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diff changeset

529 }

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parents:

diff changeset

530 return bp;

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

531 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

532

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

533 /***********************************

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

534 * Throw a D object.

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

535 */

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

536

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

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parents:

diff changeset

537 void __stdcall _d_throw(Object *h)

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

538 {

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

539 unsigned regebp;

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

540

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

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parents:

diff changeset

541 //printf("_d_throw(h = %p, &h = %p)\n", h, &h);

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

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parents:

diff changeset

542 //printf("\tvptr = %p\n", *(void **)h);

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parents:

diff changeset

543

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parents:

diff changeset

544 regebp = _EBP;

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parents:

diff changeset

545

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parents:

diff changeset

546 while (1) // for each function on the stack

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parents:

diff changeset

547 {

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

548 struct DHandlerTable *handler_table;

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parents:

diff changeset

549 struct FuncTable *pfunc;

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parents:

diff changeset

550 struct DHandlerInfo *phi;

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parents:

diff changeset

551 unsigned retaddr;

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

552 unsigned funcoffset;

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

553 unsigned spoff;

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

554 unsigned retoffset;

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

555 int index;

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

556 int dim;

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parents:

diff changeset

557 int ndx;

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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

558 int prev_ndx;

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parents:

diff changeset

559

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parents:

diff changeset

560 regebp = __eh_find_caller(regebp,&retaddr);

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parents:

diff changeset

561 if (!regebp)

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parents:

diff changeset

562 // if end of call chain

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

563 break;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

564

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

565 handler_table = __eh_finddata((void *)retaddr); // find static data associated with function

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

566 if (!handler_table) // if no static data

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

567 {

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

568 continue;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

569 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

570 funcoffset = (unsigned)handler_table->fptr;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

571 spoff = handler_table->espoffset;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

572 retoffset = handler_table->retoffset;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

573

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

574 #ifdef DEBUG

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

575 printf("retaddr = x%x\n",(unsigned)retaddr);

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

576 printf("regebp=x%04x, funcoffset=x%04x, spoff=x%x, retoffset=x%x\n",

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

577 regebp,funcoffset,spoff,retoffset);

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

578 #endif

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

579

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

580 // Find start index for retaddr in static data

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

581 dim = handler_table->nhandlers;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

582 index = -1;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

583 for (int i = 0; i < dim; i++)

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

584 {

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

585 phi = &handler_table->handler_info[i];

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

586

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

587 if ((unsigned)retaddr >= funcoffset + phi->offset)

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

588 index = i;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

589 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

590

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

591 // walk through handler table, checking each handler

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

592 // with an index smaller than the current table_index

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

593 for (ndx = index; ndx != -1; ndx = prev_ndx)

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

594 {

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

595 phi = &handler_table->handler_info[ndx];

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

596 prev_ndx = phi->prev_index;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

597 if (phi->cioffset)

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

598 {

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

599 // this is a catch handler (no finally)

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

600 struct DCatchInfo *pci;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

601 int ncatches;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

602 int i;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

603

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

604 pci = (struct DCatchInfo *)((char *)handler_table + phi->cioffset);

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

605 ncatches = pci->ncatches;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

606 for (i = 0; i < ncatches; i++)

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

607 {

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

608 struct DCatchBlock *pcb;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

609 ClassInfo *ci = **(ClassInfo ***)h;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

610

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

611 pcb = &pci->catch_block[i];

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

612

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

613 if (_d_isbaseof(ci, pcb->type))

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

614 { // Matched the catch type, so we've found the handler.

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

615

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

616 // Initialize catch variable

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

617 *(void **)(regebp + (pcb->bpoffset)) = h;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

618

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

619 // Jump to catch block. Does not return.

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

620 {

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

621 unsigned catch_esp;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

622 fp_t catch_addr;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

623

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

624 catch_addr = (fp_t)(pcb->code);

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

625 catch_esp = regebp - handler_table->espoffset - sizeof(fp_t);

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

626 _asm

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

627 {

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

628 mov EAX,catch_esp

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

629 mov ECX,catch_addr

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

630 mov [EAX],ECX

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

631 mov EBP,regebp

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

632 mov ESP,EAX // reset stack

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

633 ret // jump to catch block

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

634 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

635 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

636 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

637 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

638 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

639 else if (phi->finally_code)

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

640 { // Call finally block

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

641 // Note that it is unnecessary to adjust the ESP, as the finally block

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

642 // accesses all items on the stack as relative to EBP.

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

643

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

644 void *blockaddr = phi->finally_code;

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

645

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

646 _asm

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

647 {

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

648 push EBX

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

649 mov EBX,blockaddr

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

650 push EBP

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

651 mov EBP,regebp

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

652 call EBX

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

653 pop EBP

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

654 pop EBX

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

655 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

656 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

657 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

658 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

659 }

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

660

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

661

d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.

Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>

parents:

diff changeset

662 #endif

Mercurial > projects > ldc

annotate druntime/src/compiler/dmd/deh.c @ 759:d3eb054172f9