| .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 |
