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rt: Fix 64-bit linux __morestack

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This commit is contained in:
Brian Anderson 2011-12-01 20:56:05 -08:00
parent 2511299024
commit 691b517fb9
1 changed files with 26 additions and 2 deletions
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28
src/rt/arch/x86_64/morestack.S
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@ -50,10 +50,20 @@
#if defined(__linux__) || defined(__APPLE__)
MORESTACK:
# Set up a normal backtrace
#if defined(__ELF__)
.cfi_startproc
#endif
// Set up a normal backtrace
#if defined(__ELF__)
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
#endif
movq %rsp, %rbp
#if defined(__ELF__)
.cfi_def_cfa_register %rbp
#endif
// FIXME: libgcc also saves rax. not sure if we need to
@ -77,7 +87,12 @@ MORESTACK:
movq UPCALL_NEW_STACK@GOTPCREL(%rip), %rsi
movq %rsp, %rdi
#ifdef __APPLE__
call UPCALL_CALL_C@GOTPCREL
#endif
#ifdef __linux__
call UPCALL_CALL_C@PLT
#endif
// Pop the new_stack_args struct
addq $24, %rsp
@ -104,12 +119,21 @@ MORESTACK:
movq UPCALL_DEL_STACK@GOTPCREL(%rip), %rsi
movq $0, %rdi
#ifdef __APPLE__
call UPCALL_CALL_C@GOTPCREL
#endif
#ifdef __linux__
call UPCALL_CALL_C@PLT
#endif
addq $8, %rsp
popq %rbp
ret
#if defined(__ELF__)
.cfi_endproc
#endif
#else
MORESTACK:
ret