platform_bionic/libc/arch-x86/syscalls/__gettimeofday.S
Robert Jarzmik 10726d52ac libc: arch-x86: implement kernel vdso time functions
This patch give the possibility of time vdso support on 32bit kernel.
If the 32bit x86 kernel provides gettimeofday() and clock_gettime()
primitives in vdso. In this case make bionic use them. If the kernel
doesn't provide them, fallback to the legacy system call versions.

Change-Id: I87b772a9486fa356903e1f98f486ab9eb0b6f6f7
Signed-off-by: Robert Jarzmik <robert.jarzmik@intel.com>
Signed-off-by: Mingwei Shi <mingwei.shi@intel.com>
2015-07-22 01:31:38 +00:00

26 lines
554 B
ArmAsm

/* Generated by gensyscalls.py. Do not edit. */
#include <private/bionic_asm.h>
ENTRY(__gettimeofday)
pushl %ebx
.cfi_def_cfa_offset 8
.cfi_rel_offset ebx, 0
pushl %ecx
.cfi_adjust_cfa_offset 4
.cfi_rel_offset ecx, 0
mov 12(%esp), %ebx
mov 16(%esp), %ecx
movl $__NR_gettimeofday, %eax
int $0x80
cmpl $-MAX_ERRNO, %eax
jb 1f
negl %eax
pushl %eax
call __set_errno_internal
addl $4, %esp
1:
popl %ecx
popl %ebx
ret
END(__gettimeofday)