diff options
Diffstat (limited to 'libc/arch-x86/bionic/futex_x86.S')
| -rw-r--r-- | libc/arch-x86/bionic/futex_x86.S | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/libc/arch-x86/bionic/futex_x86.S b/libc/arch-x86/bionic/futex_x86.S new file mode 100644 index 0000000..e98a391 --- /dev/null +++ b/libc/arch-x86/bionic/futex_x86.S @@ -0,0 +1,75 @@ +#include <sys/linux-syscalls.h> + +#define FUTEX_WAIT 0 +#define FUTEX_WAKE 1 + + +/* + * int __futex_wait(volatile void *ftx, int val, const struct timespec *timeout) + */ +.text +.globl __futex_wait +.type __futex_wait, @function +.align 4 +__futex_wait: + pushl %ebx + pushl %esi + mov 12(%esp), %ebx /* ftx */ + movl $FUTEX_WAIT, %ecx + mov 16(%esp), %edx /* val */ + mov 20(%esp), %esi /* timeout */ + movl $__NR_futex, %eax + int $0x80 + popl %esi + popl %ebx + ret + + +/* int __futex_wake(volatile void *ftx, int count) */ + +.text +.globl __futex_wake +.type __futex_wake, @function +.align 4 +__futex_wake: + pushl %ebx + mov 8(%esp), %ebx /* ftx */ + movl $FUTEX_WAKE, %ecx + mov 12(%esp), %edx /* count */ + movl $__NR_futex, %eax + int $0x80 + popl %ebx + ret + +/* int __futex_syscall3(volatile void *ftx, int op, int count) */ +.text +.globl __futex_syscall3 +.type __futex_syscall3, @function +.align 4 +__futex_syscall3: + pushl %ebx + movl 8(%esp), %ebx /* ftx */ + movl 12(%esp), %ecx /* op */ + movl 16(%esp), %edx /* value */ + movl $__NR_futex, %eax + int $0x80 + popl %ebx + ret + +/* int __futex_syscall4(volatile void *ftx, int op, int val, const struct timespec *timeout) */ +.text +.globl __futex_syscall4 +.type __futex_syscall4, @function +.align 4 +__futex_syscall4: + pushl %ebx + pushl %esi + movl 12(%esp), %ebx /* ftx */ + movl 16(%esp), %ecx /* op */ + movl 20(%esp), %edx /* val */ + movl 24(%esp), %esi /* timeout */ + movl $__NR_futex, %eax + int $0x80 + popl %esi + popl %ebx + ret |