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DynASM: Improve validation of local backwards relocations.

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This commit is contained in:
Mike Pall 2013-03-17 14:20:40 +01:00
parent eea48c8b26
commit d147eedac9
4 changed files with 8 additions and 4 deletions
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3
dynasm/dasm_arm.h
View File

@ -211,7 +211,8 @@ void dasm_put(Dst_DECL, int start, ...)
case DASM_ALIGN: ofs += (ins & 255); b[pos++] = ofs; break;
case DASM_REL_LG:
n = (ins & 2047) - 10; pl = D->lglabels + n;
if (n >= 0) { CKPL(lg, LG); goto putrel; } /* Bkwd rel or global. */
/* Bkwd rel or global. */
if (n >= 0) { CK(n>=10||*pl<0, RANGE_LG); CKPL(lg, LG); goto putrel; }
pl += 10; n = *pl;
if (n < 0) n = 0; /* Start new chain for fwd rel if label exists. */
goto linkrel;

3
dynasm/dasm_mips.h
View File

@ -202,7 +202,8 @@ void dasm_put(Dst_DECL, int start, ...)
case DASM_ALIGN: ofs += (ins & 255); b[pos++] = ofs; break;
case DASM_REL_LG:
n = (ins & 2047) - 10; pl = D->lglabels + n;
if (n >= 0) { CKPL(lg, LG); goto putrel; } /* Bkwd rel or global. */
/* Bkwd rel or global. */
if (n >= 0) { CK(n>=10||*pl<0, RANGE_LG); CKPL(lg, LG); goto putrel; }
pl += 10; n = *pl;
if (n < 0) n = 0; /* Start new chain for fwd rel if label exists. */
goto linkrel;

3
dynasm/dasm_ppc.h
View File

@ -202,7 +202,8 @@ void dasm_put(Dst_DECL, int start, ...)
case DASM_ALIGN: ofs += (ins & 255); b[pos++] = ofs; break;
case DASM_REL_LG:
n = (ins & 2047) - 10; pl = D->lglabels + n;
if (n >= 0) { CKPL(lg, LG); goto putrel; } /* Bkwd rel or global. */
/* Bkwd rel or global. */
if (n >= 0) { CK(n>=10||*pl<0, RANGE_LG); CKPL(lg, LG); goto putrel; }
pl += 10; n = *pl;
if (n < 0) n = 0; /* Start new chain for fwd rel if label exists. */
goto linkrel;

3
dynasm/dasm_x86.h
View File

@ -213,7 +213,8 @@ void dasm_put(Dst_DECL, int start, ...)
case DASM_REL_LG:
case DASM_IMM_LG:
n = *p++; pl = D->lglabels + n;
if (n <= 246) { CKPL(lg, LG); goto putrel; } /* Bkwd rel or global. */
/* Bkwd rel or global. */
if (n <= 246) { CK(n>=10||*pl<0, RANGE_LG); CKPL(lg, LG); goto putrel; }
pl -= 246; n = *pl;
if (n < 0) n = 0; /* Start new chain for fwd rel if label exists. */
goto linkrel;