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Try removing code marked with "I don't think this is necessary"

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This commit is contained in:
Tim Chevalier 2012-06-21 14:12:18 -07:00
parent 290206b178
commit be8b09160b
2 changed files with 1 additions and 15 deletions
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9
src/rt/arch/i386/morestack.S
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@ -213,15 +213,6 @@ MORESTACK:
popl %ebp popl %ebp
// FIXME: I don't think these rules are necessary
// since the unwinder should never encounter an instruction
// pointer pointing here.
#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
// Restore the rule for how to find %ebp
.cfi_restore %ebp
// Tell the unwinder how to find the CFA in terms of %esp
.cfi_def_cfa %esp, 16
#endif
retl $8 retl $8
.L$bail: .L$bail:

7
src/rt/arch/x86_64/morestack.S
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@ -51,7 +51,7 @@ MORESTACK:
subq $184, %rsp subq $184, %rsp
// FIXME: libgcc also saves rax. not sure if we need to // FIXME: libgcc also saves rax. not sure if we need to (#2685)
// Save argument registers of the original function // Save argument registers of the original function
movq %rdi, (%rsp) movq %rdi, (%rsp)
@ -133,11 +133,6 @@ MORESTACK:
popq %rax // Restore the return value popq %rax // Restore the return value
popq %rbp popq %rbp
// FIXME: I don't think these rules are necessary
// since the unwinder should never encounter an instruction
// pointer pointing here.
.cfi_restore %rbp
.cfi_def_cfa %rsp, 16
ret ret
.cfi_endproc .cfi_endproc