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[arm] Use correct register for return value; also don't bother saving full set of callee-saved registers using PUSH, they'll be saved individually

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This commit is contained in:
Vladimir Vukicevic 2008-10-20 17:20:05 -07:00
parent af0b642859
commit 89d7a76a6b
1 changed files with 5 additions and 6 deletions
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11
js/src/nanojit/NativeARM.cpp
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@ -81,12 +81,11 @@ Assembler::genPrologue()
// NJ_RESV_OFFSET is space at the top of the stack for us
// to use for parameter passing (8 bytes at the moment)
uint32_t stackNeeded = STACK_GRANULARITY * _activation.highwatermark + NJ_STACK_OFFSET;
uint32_t savingCount = 0;
uint32_t savingMask = SavedRegs | rmask(FP) | rmask(LR);
savingCount = NumSavedRegs+2;
uint32_t savingMask = rmask(FP) | rmask(LR);
uint32_t savingCount = 2;
// so for alignment purposes we've pushed return addr, fp, and savingCount registers
// so for alignment purposes we've pushed return addr and fp
uint32_t stackPushed = STACK_GRANULARITY * savingCount;
uint32_t aligned = alignUp(stackNeeded + stackPushed, NJ_ALIGN_STACK);
int32_t amt = aligned - stackPushed;
@ -139,7 +138,7 @@ Assembler::nFragExit(LInsp guard)
#endif
// return value is GuardRecord*
LDi(R2, int(lr));
LDi(R0, int(lr));
}
NIns*
@ -150,7 +149,7 @@ Assembler::genEpilogue()
// this is needed if we jump here from nFragExit
//MR(R0,R2); // return LinkRecord*
RegisterMask savingMask = SavedRegs | rmask(FP) | rmask(LR);
RegisterMask savingMask = rmask(FP) | rmask(LR);
POP_mask(savingMask); // regs
return _nIns;
}