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| .text
.globl bar
bar:
.cfi_startproc
leal (%edi, %edi), %eax
ret
.cfi_endproc
.globl asm_main
asm_main:
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
movl $47, %edi
# install tramp as return address
# (similar to signal return trampolines on some platforms)
leaq tramp(%rip), %rax
pushq %rax
jmp bar # call, with return address pointing to tramp
popq %rbp
.cfi_def_cfa %rsp, 8
ret
.cfi_endproc
.globl tramp
tramp:
.cfi_startproc
.cfi_signal_frame
# Emit cfi to line up with the frame created by asm_main
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
.cfi_def_cfa_register %rbp
# copy asm_main's epilog to clean up the frame
popq %rbp
.cfi_def_cfa %rsp, 8
ret
.cfi_endproc
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