| #if defined(__i386__) && defined(__linux__) |
| |
| #include "sanitizer_common/sanitizer_asm.h" |
| |
| .comm _ZN14__interception10real_vforkE,4,4 |
| .globl ASM_WRAPPER_NAME(vfork) |
| ASM_TYPE_FUNCTION(ASM_WRAPPER_NAME(vfork)) |
| ASM_WRAPPER_NAME(vfork): |
| // Store return address in the spill area and tear down the stack frame. |
| sub $12, %esp |
| call COMMON_INTERCEPTOR_SPILL_AREA |
| mov 12(%esp), %ecx |
| mov %ecx, (%eax) |
| add $16, %esp |
| |
| call .L0$pb |
| .L0$pb: |
| pop %eax |
| .Ltmp0: |
| add $_GLOBAL_OFFSET_TABLE_+(.Ltmp0-.L0$pb), %eax |
| call *_ZN14__interception10real_vforkE@GOTOFF(%eax) |
| |
| // Restore the stack frame. |
| // 12(%esp) return address |
| // 8(%esp) spill %ebx |
| // 4(%esp) spill REAL(vfork) return value |
| // (%esp) call frame (arg0) for __*_handle_vfork |
| sub $16, %esp |
| mov %ebx, 8(%esp) |
| mov %eax, 4(%esp) |
| |
| // Form GOT address in %ebx. |
| call .L1$pb |
| .L1$pb: |
| pop %ebx |
| .Ltmp1: |
| add $_GLOBAL_OFFSET_TABLE_+(.Ltmp1-.L1$pb), %ebx |
| |
| // Restore original return address. |
| call COMMON_INTERCEPTOR_SPILL_AREA |
| mov (%eax), %ecx |
| mov %ecx, 12(%esp) |
| mov 4(%esp), %eax |
| |
| // Call handle_vfork in the parent process (%rax != 0). |
| test %eax, %eax |
| je .L_exit |
| |
| lea 16(%esp), %ecx |
| mov %ecx, (%esp) |
| call COMMON_INTERCEPTOR_HANDLE_VFORK@PLT |
| |
| .L_exit: |
| mov 4(%esp), %eax |
| mov 8(%esp), %ebx |
| add $12, %esp |
| ret |
| ASM_SIZE(vfork) |
| |
| .weak vfork |
| .set vfork, ASM_WRAPPER_NAME(vfork) |
| |
| #endif |