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comparison gen/asm-x86-64.h @ 871:e70a0e7e2260

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Apply duane's patch for align power-of-two checking in inline asm. Fixes #159
author Christian Kamm <kamm incasoftware de>
date Sun, 04 Jan 2009 15:39:34 +0100
parents f6dd817060fc
children 545f54041d91
comparison
equal deleted inserted replaced
870:af7a6faf9406 871:e70a0e7e2260
1258 /* DMD offset usage: <parm>[<reg>] seems to always be relative to EBP+8 .. even 1258 /* DMD offset usage: <parm>[<reg>] seems to always be relative to EBP+8 .. even
1259 if naked.. */ 1259 if naked.. */
1260 1260
1261 // mov eax, 4 1261 // mov eax, 4
1262 // mov eax, fs:4 1262 // mov eax, fs:4
1263 // -- have to assume we know wheter or not to use '$' 1263 // -- have to assume we know whether or not to use '$'
1264 1264
1265 static Token eof_tok; 1265 static Token eof_tok;
1266 static Expression * Handled; 1266 static Expression * Handled;
1267 static Identifier * ident_seg; 1267 static Identifier * ident_seg;
1268 1268
2636 // parse primary: DMD allows 'MyAlign' (const int) but not '2+2' 2636 // parse primary: DMD allows 'MyAlign' (const int) but not '2+2'
2637 // GAS is padding with NOPs last time I checked. 2637 // GAS is padding with NOPs last time I checked.
2638 Expression * e = parseAsmExp()->optimize(WANTvalue | WANTinterpret); 2638 Expression * e = parseAsmExp()->optimize(WANTvalue | WANTinterpret);
2639 integer_t align = e->toInteger(); 2639 integer_t align = e->toInteger();
2640 2640
2641 if (align >= 0) { 2641 if (align & align - 1 == 0) {
2642 // %% is this printf portable? 2642 //FIXME: This printf is not portable. The use of `align` varies from system to system;
2643 // on i386 using a.out, .align `n` will align on a 2^`n` boundary instead of an `n` boundary
2643 #ifdef HAVE_GAS_BALIGN_AND_P2ALIGN 2644 #ifdef HAVE_GAS_BALIGN_AND_P2ALIGN
2644 insnTemplate->printf(".balign\t%u", (unsigned) align); 2645 insnTemplate->printf(".balign\t%u", (unsigned) align);
2645 #else 2646 #else
2646 insnTemplate->printf(".align\t%u", (unsigned) align); 2647 insnTemplate->printf(".align\t%u", (unsigned) align);
2647 #endif 2648 #endif