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Generate indirect calls for out-of-range distances on x64.

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Mike Pall 2010-03-07 14:31:51 +01:00
parent b4299256cd
commit e807d46931
2 changed files with 14 additions and 0 deletions
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8
src/lj_asm.c
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@ -461,6 +461,14 @@ static void emit_jcc(ASMState *as, int cc, MCode *target)
static void emit_call_(ASMState *as, MCode *target) static void emit_call_(ASMState *as, MCode *target)
{ {
MCode *p = as->mcp; MCode *p = as->mcp;
#if LJ_64
if (target-p != (int32_t)(target-p)) {
/* Assumes RID_RET is never an argument to calls and always clobbered. */
emit_rr(as, XO_GROUP5, XOg_CALL, RID_RET);
emit_loadu64(as, RID_RET, (uint64_t)target);
return;
}
#endif
*(int32_t *)(p-4) = jmprel(p, target); *(int32_t *)(p-4) = jmprel(p, target);
p[-5] = XI_CALL; p[-5] = XI_CALL;
as->mcp = p - 5; as->mcp = p - 5;

6
src/lj_target_x86.h
View File

@ -224,6 +224,8 @@ typedef enum {
XO_TEST = XO_(85), XO_TEST = XO_(85),
XO_GROUP3b = XO_(f6), XO_GROUP3b = XO_(f6),
XO_GROUP3 = XO_(f7), XO_GROUP3 = XO_(f7),
XO_GROUP5b = XO_(fe),
XO_GROUP5 = XO_(ff),
XO_MOVZXb = XO_0f(b6), XO_MOVZXb = XO_0f(b6),
XO_MOVZXw = XO_0f(b7), XO_MOVZXw = XO_0f(b7),
XO_MOVSXb = XO_0f(be), XO_MOVSXb = XO_0f(be),
@ -278,6 +280,10 @@ typedef enum {
XOg_TEST, XOg_TEST_, XOg_NOT, XOg_NEG, XOg_MUL, XOg_IMUL, XOg_DIV, XOg_IDIV XOg_TEST, XOg_TEST_, XOg_NOT, XOg_NEG, XOg_MUL, XOg_IMUL, XOg_DIV, XOg_IDIV
} x86Group3; } x86Group3;
typedef enum {
XOg_INC, XOg_DEC, XOg_CALL, XOg_CALLfar, XOg_JMP, XOg_JMPfar, XOg_PUSH
} x86Group5;
/* x86 condition codes. */ /* x86 condition codes. */
typedef enum { typedef enum {
CC_O, CC_NO, CC_B, CC_NB, CC_E, CC_NE, CC_BE, CC_NBE, CC_O, CC_NO, CC_B, CC_NB, CC_E, CC_NE, CC_BE, CC_NBE,