projects/ldc: druntime/src/compiler/ldc/eh.d annotate

annotate druntime/src/compiler/ldc/eh.d @ 759:d3eb054172f9

Added copy of druntime from DMD 2.020 modified for LDC.

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 * This module contains functions and structures required for
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	3 * exception handling.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	4 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	5 module eh;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	6
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	7 import util.console;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	8 import ldc.cstdarg;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	9
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	10 // debug = EH_personality;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	11
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	12 // current EH implementation works on x86
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	13 // if it has a working unwind runtime
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	14 version(X86) {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	15 version(linux) version=X86_UNWIND;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	16 version(darwin) version=X86_UNWIND;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	17 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	18 version(X86_64) {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	19 version(linux) version=X86_UNWIND;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	20 }
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 private extern(C) void abort();
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	23 private extern(C) int printf(in char*, ...);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	24 private extern(C) int vprintf(in char*, va_list va);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	25
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	26 // D runtime functions
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	27 extern(C) {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	28 int _d_isbaseof(ClassInfo oc, ClassInfo c);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	29 }
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 // libunwind headers
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	32 extern(C)
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 enum _Unwind_Reason_Code
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 NO_REASON = 0,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	37 FOREIGN_EXCEPTION_CAUGHT = 1,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	38 FATAL_PHASE2_ERROR = 2,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	39 FATAL_PHASE1_ERROR = 3,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	40 NORMAL_STOP = 4,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	41 END_OF_STACK = 5,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	42 HANDLER_FOUND = 6,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	43 INSTALL_CONTEXT = 7,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	44 CONTINUE_UNWIND = 8
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
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	47 enum _Unwind_Action
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	48 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	49 SEARCH_PHASE = 1,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	50 CLEANUP_PHASE = 2,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	51 HANDLER_PHASE = 3,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	52 FORCE_UNWIND = 4
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
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	55 alias void* _Unwind_Context_Ptr;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	56
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	57 alias void function(_Unwind_Reason_Code, _Unwind_Exception*) _Unwind_Exception_Cleanup_Fn;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	58
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	59 struct _Unwind_Exception
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 char[8] exception_class;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	62 _Unwind_Exception_Cleanup_Fn exception_cleanup;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	63 int private_1;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	64 int private_2;
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
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	67 version(X86_UNWIND)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	68 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	69 void _Unwind_Resume(_Unwind_Exception*);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	70 _Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Exception*);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	71 ulong _Unwind_GetLanguageSpecificData(_Unwind_Context_Ptr context);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	72 ulong _Unwind_GetIP(_Unwind_Context_Ptr context);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	73 ulong _Unwind_SetIP(_Unwind_Context_Ptr context, ulong new_value);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	74 ulong _Unwind_SetGR(_Unwind_Context_Ptr context, int index, ulong new_value);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	75 ulong _Unwind_GetRegionStart(_Unwind_Context_Ptr context);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	76 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	77 else
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 // runtime calls these directly
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	80 void _Unwind_Resume(_Unwind_Exception*)
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 console("_Unwind_Resume is not implemented on this platform.\n");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	83 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	84 _Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Exception*)
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 console("_Unwind_RaiseException is not implemented on this platform.\n");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	87 return _Unwind_Reason_Code.FATAL_PHASE1_ERROR;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	88 }
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
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
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	93 // error and exit
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	94 extern(C) private void fatalerror(in char* format, ...)
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 va_list args;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	97 va_start(args, format);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	98 printf("Fatal error in EH code: ");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	99 vprintf(format, args);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	100 printf("\n");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	101 abort();
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
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	104
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	105 // helpers for reading certain DWARF data
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	106 private ubyte* get_uleb128(ubyte* addr, ref size_t res)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	107 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	108 res = 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	109 size_t bitsize = 0;
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 // read as long as high bit is set
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	112 while(*addr & 0x80) {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	113 res \|= (*addr & 0x7f) << bitsize;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	114 bitsize += 7;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	115 addr += 1;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	116 if(bitsize >= size_t.sizeof*8)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	117 fatalerror("tried to read uleb128 that exceeded size of size_t");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	118 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	119 // read last
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	120 if(bitsize != 0 && addr >= 1 << size_t.sizeof8 - bitsize)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	121 fatalerror("Fatal error in EH code: tried to read uleb128 that exceeded size of size_t");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	122 res \|= (*addr) << bitsize;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	123
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	124 return addr + 1;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	125 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	126
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	127 private ubyte* get_sleb128(ubyte* addr, ref ptrdiff_t res)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	128 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	129 res = 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	130 size_t bitsize = 0;
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 // read as long as high bit is set
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	133 while(*addr & 0x80) {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	134 res \|= (*addr & 0x7f) << bitsize;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	135 bitsize += 7;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	136 addr += 1;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	137 if(bitsize >= size_t.sizeof*8)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	138 fatalerror("tried to read sleb128 that exceeded size of size_t");
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 // read last
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	141 if(bitsize != 0 && addr >= 1 << size_t.sizeof8 - bitsize)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	142 fatalerror("tried to read sleb128 that exceeded size of size_t");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	143 res \|= (*addr) << bitsize;
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 // take care of sign
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	146 if(bitsize < size_t.sizeof8 && ((addr) & 0x40))
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	147 res \|= cast(ptrdiff_t)(-1) ^ ((1 << (bitsize+7)) - 1);
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 return addr + 1;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	150 }
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
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	153 // exception struct used by the runtime.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	154 // _d_throw allocates a new instance and passes the address of its
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	155 // _Unwind_Exception member to the unwind call. The personality
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	156 // routine is then able to get the whole struct by looking at the data
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	157 // surrounding the unwind info.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	158 struct _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	159 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	160 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	161 _Unwind_Exception unwind_info;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	162 }
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 // the 8-byte string identifying the type of exception
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	165 // the first 4 are for vendor, the second 4 for language
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	166 //TODO: This may be the wrong way around
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	167 char[8] _d_exception_class = "LLDCD1\0\0";
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	168
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 //
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	171 // x86 unwind specific implementation of personality function
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	172 // and helpers
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	173 //
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	174 version(X86_UNWIND)
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
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	177 // the personality routine gets called by the unwind handler and is responsible for
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	178 // reading the EH tables and deciding what to do
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	179 extern(C) _Unwind_Reason_Code _d_eh_personality(int ver, _Unwind_Action actions, ulong exception_class, _Unwind_Exception* exception_info, _Unwind_Context_Ptr context)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	180 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	181 // check ver: the C++ Itanium ABI only allows ver == 1
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	182 if(ver != 1)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	183 return _Unwind_Reason_Code.FATAL_PHASE1_ERROR;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	184
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	185 // check exceptionClass
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	186 //TODO: Treat foreign exceptions with more respect
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	187 if((cast(char*)&exception_class)[0..8] != _d_exception_class)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	188 return _Unwind_Reason_Code.FATAL_PHASE1_ERROR;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	189
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	190 // find call site table, action table and classinfo table
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	191 // Note: callsite and action tables do not contain static-length
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	192 // data and will be parsed as needed
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	193 // Note: classinfo_table points past the end of the table
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	194 ubyte* callsite_table;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	195 ubyte* action_table;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	196 ClassInfo* classinfo_table;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	197 _d_getLanguageSpecificTables(context, callsite_table, action_table, classinfo_table);
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 /*
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	201 find landing pad and action table index belonging to ip by walking
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	202 the callsite_table
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 ubyte* callsite_walker = callsite_table;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	205
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	206 // get the instruction pointer
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	207 // will be used to find the right entry in the callsite_table
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	208 // -1 because it will point past the last instruction
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	209 ulong ip = _Unwind_GetIP(context) - 1;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	210
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	211 // address block_start is relative to
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	212 ulong region_start = _Unwind_GetRegionStart(context);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	213
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	214 // table entries
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	215 uint block_start_offset, block_size;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	216 ulong landing_pad;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	217 size_t action_offset;
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 while(true) {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	220 // if we've gone through the list and found nothing...
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	221 if(callsite_walker >= action_table)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	222 return _Unwind_Reason_Code.CONTINUE_UNWIND;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	223
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	224 block_start_offset = cast(uint)callsite_walker;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	225 block_size = (cast(uint)callsite_walker + 1);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	226 landing_pad = (cast(uint)callsite_walker + 2);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	227 if(landing_pad)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	228 landing_pad += region_start;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	229 callsite_walker = get_uleb128(callsite_walker + 3*uint.sizeof, action_offset);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	230
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	231 debug(EH_personality_verbose) printf("%d %d %d\n", block_start_offset, block_size, landing_pad);
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 // since the list is sorted, as soon as we're past the ip
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	234 // there's no handler to be found
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	235 if(ip < region_start + block_start_offset)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	236 return _Unwind_Reason_Code.CONTINUE_UNWIND;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	237
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	238 // if we've found our block, exit
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	239 if(ip < region_start + block_start_offset + block_size)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	240 break;
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
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	243 debug(EH_personality) printf("Found correct landing pad and actionOffset %d\n", action_offset);
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 // now we need the exception's classinfo to find a handler
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	246 // the exception_info is actually a member of a larger _d_exception struct
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	247 // the runtime allocated. get that now
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	248 _d_exception* exception_struct = cast(_d_exception)(cast(ubyte)exception_info - _d_exception.unwind_info.offsetof);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	249
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	250 // if there's no action offset and no landing pad, continue unwinding
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	251 if(!action_offset && !landing_pad)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	252 return _Unwind_Reason_Code.CONTINUE_UNWIND;
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 // if there's no action offset but a landing pad, this is a cleanup handler
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	255 else if(!action_offset && landing_pad)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	256 return _d_eh_install_finally_context(actions, landing_pad, exception_struct, context);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	257
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	258 /*
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	259 walk action table chain, comparing classinfos using _d_isbaseof
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	260 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	261 ubyte* action_walker = action_table + action_offset - 1;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	262
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	263 ptrdiff_t ti_offset, next_action_offset;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	264 while(true) {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	265 action_walker = get_sleb128(action_walker, ti_offset);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	266 // it is intentional that we not modify action_walker here
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	267 // next_action_offset is from current action_walker position
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	268 get_sleb128(action_walker, next_action_offset);
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 // negative are 'filters' which we don't use
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	271 if(!(ti_offset >= 0))
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	272 fatalerror("Filter actions are unsupported");
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 // zero means cleanup, which we require to be the last action
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	275 if(ti_offset == 0) {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	276 if(!(next_action_offset == 0))
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	277 fatalerror("Cleanup action must be last in chain");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	278 return _d_eh_install_finally_context(actions, landing_pad, exception_struct, context);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	279 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	280
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	281 // get classinfo for action and check if the one in the
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	282 // exception structure is a base
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	283 ClassInfo catch_ci = classinfo_table[-ti_offset];
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	284 debug(EH_personality) printf("Comparing catch %s to exception %s\n", catch_ci.name.ptr, exception_struct.exception_object.classinfo.name.ptr);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	285 if(_d_isbaseof(exception_struct.exception_object.classinfo, catch_ci))
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	286 return _d_eh_install_catch_context(actions, ti_offset, landing_pad, exception_struct, context);
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 // we've walked through all actions and found nothing...
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	289 if(next_action_offset == 0)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	290 return _Unwind_Reason_Code.CONTINUE_UNWIND;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	291 else
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	292 action_walker += next_action_offset;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	293 }
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 fatalerror("reached unreachable");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	296 return _Unwind_Reason_Code.FATAL_PHASE1_ERROR;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	297 }
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 // These are the register numbers for SetGR that
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	300 // llvm's eh.exception and eh.selector intrinsics
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	301 // will pick up.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	302 // Found by trial-and-error :/
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	303 version (X86_64)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	304 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	305 private int eh_exception_regno = 3;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	306 private int eh_selector_regno = 1;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	307 } else {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	308 private int eh_exception_regno = 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	309 private int eh_selector_regno = 2;
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
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	312 private _Unwind_Reason_Code _d_eh_install_catch_context(_Unwind_Action actions, ptrdiff_t switchval, ulong landing_pad, _d_exception* exception_struct, _Unwind_Context_Ptr context)
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 debug(EH_personality) printf("Found catch clause!\n");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	315
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	316 if(actions & _Unwind_Action.SEARCH_PHASE)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	317 return _Unwind_Reason_Code.HANDLER_FOUND;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	318
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	319 else if(actions & _Unwind_Action.HANDLER_PHASE)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	320 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	321 debug(EH_personality) printf("Setting switch value to: %d!\n", switchval);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	322 _Unwind_SetGR(context, eh_exception_regno, cast(ulong)cast(void*)(exception_struct.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	323 _Unwind_SetGR(context, eh_selector_regno, switchval);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	324 _Unwind_SetIP(context, landing_pad);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	325 return _Unwind_Reason_Code.INSTALL_CONTEXT;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	326 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	327
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	328 fatalerror("reached unreachable");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	329 return _Unwind_Reason_Code.FATAL_PHASE2_ERROR;
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 private _Unwind_Reason_Code _d_eh_install_finally_context(_Unwind_Action actions, ulong landing_pad, _d_exception* exception_struct, _Unwind_Context_Ptr context)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	333 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	334 // if we're merely in search phase, continue
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	335 if(actions & _Unwind_Action.SEARCH_PHASE)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	336 return _Unwind_Reason_Code.CONTINUE_UNWIND;
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 debug(EH_personality) printf("Calling cleanup routine...\n");
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 _Unwind_SetGR(context, eh_exception_regno, cast(ulong)exception_struct);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	341 _Unwind_SetGR(context, eh_selector_regno, 0);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	342 _Unwind_SetIP(context, landing_pad);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	343 return _Unwind_Reason_Code.INSTALL_CONTEXT;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	344 }
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 private void _d_getLanguageSpecificTables(_Unwind_Context_Ptr context, ref ubyte* callsite, ref ubyte* action, ref 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	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 ubyte* data = cast(ubyte*)_Unwind_GetLanguageSpecificData(context);
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 //TODO: Do proper DWARF reading here
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	351 if(*data++ != 0xff)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	352 fatalerror("DWARF header has unexpected format 1");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	353
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	354 if(*data++ != 0x00)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	355 fatalerror("DWARF header has unexpected format 2");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	356 size_t cioffset;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	357 data = get_uleb128(data, cioffset);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	358 ci = cast(ClassInfo*)(data + cioffset);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	359
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	360 if(*data++ != 0x03)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	361 fatalerror("DWARF header has unexpected format 3");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	362 size_t callsitelength;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	363 data = get_uleb128(data, callsitelength);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	364 action = data + callsitelength;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	365
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	366 callsite = data;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	367 }
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 } // end of x86 Linux specific implementation
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 extern(C) void _d_throw_exception(Object e)
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 if (e !is null)
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 _d_exception* exc_struct = new _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	377 exc_struct.unwind_info.exception_class[] = _d_exception_class;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	378 exc_struct.exception_object = e;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	379 _Unwind_Reason_Code ret = _Unwind_RaiseException(&exc_struct.unwind_info);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	380 console("_Unwind_RaiseException failed with reason code: ")(ret)("\n");
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 abort();
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
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	385 extern(C) void _d_eh_resume_unwind(_d_exception* exception_struct)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	386 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	387 _Unwind_Resume(&exception_struct.unwind_info);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC. Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> parents: diff changeset	388 }

Mercurial > projects > ldc

annotate druntime/src/compiler/ldc/eh.d @ 759:d3eb054172f9