diff options
Diffstat (limited to 'lib/mlibc/sysdeps/linux/x86/cp_syscall.S')
| -rw-r--r-- | lib/mlibc/sysdeps/linux/x86/cp_syscall.S | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/lib/mlibc/sysdeps/linux/x86/cp_syscall.S b/lib/mlibc/sysdeps/linux/x86/cp_syscall.S new file mode 100644 index 0000000..b89e1f4 --- /dev/null +++ b/lib/mlibc/sysdeps/linux/x86/cp_syscall.S @@ -0,0 +1,42 @@ + +.section .text +.global __mlibc_do_asm_cp_syscall +.global __mlibc_syscall_begin +.global __mlibc_syscall_end +.type __mlibc_do_asm_cp_syscall, "function" +__mlibc_do_asm_cp_syscall: + push %ebx + push %esi + push %edi + push %ebp + ; mov 16(%esp), %eax + mov 24(%esp), %ebx + mov 28(%esp), %ecx + mov 32(%esp), %edx + mov 36(%esp), %esi + mov 40(%esp), %edi + mov 44(%esp), %ebp + mov %gs:0x18, %al +__mlibc_syscall_begin: + /* tcbCancelEnableBit && tcbCancelTriggerBit */ + and $((1 << 0) | (1 << 2)), %al + cmp $((1 << 0) | (1 << 2)), %al + je cancel + mov 20(%esp), %eax + int $0x80 +__mlibc_syscall_end: + pop %ebp + pop %edi + pop %esi + pop %ebx + ret + +cancel: + pop %ebp + pop %edi + pop %esi + pop %ebx + call __mlibc_do_cancel@PLT + hlt + +.section .note.GNU-stack,"",%progbits |