platform_bionic/libc/arch-x86/syscalls/__waitid.S
Elliott Hughes 011e111d29 Ensure __set_errno is still visible on LP32.
The use of the .hidden directive to avoid going via the PLT for
__set_errno had the side-effect of actually making __set_errno
hidden (which is odd because assembler directives don't usually
affect symbols defined in a different file --- you can't even
create a weak reference to a symbol that's defined in a different
file).

This change switches the system call stubs over to a new always-hidden
__set_errno_internal and has a visible __set_errno on LP32 just for
binary compatibility with old NDK apps.

(cherry-pick of 7efad83d430f4d824f2aaa75edea5106f6ff8aae.)

Bug: 17423135
Change-Id: I6b6d7a05dda85f923d22e5ffd169a91e23499b7b
2014-09-08 16:46:50 -07:00

41 lines
887 B
ArmAsm

/* Generated by gensyscalls.py. Do not edit. */
#include <private/bionic_asm.h>
ENTRY(__waitid)
pushl %ebx
.cfi_def_cfa_offset 8
.cfi_rel_offset ebx, 0
pushl %ecx
.cfi_adjust_cfa_offset 4
.cfi_rel_offset ecx, 0
pushl %edx
.cfi_adjust_cfa_offset 4
.cfi_rel_offset edx, 0
pushl %esi
.cfi_adjust_cfa_offset 4
.cfi_rel_offset esi, 0
pushl %edi
.cfi_adjust_cfa_offset 4
.cfi_rel_offset edi, 0
mov 24(%esp), %ebx
mov 28(%esp), %ecx
mov 32(%esp), %edx
mov 36(%esp), %esi
mov 40(%esp), %edi
movl $__NR_waitid, %eax
int $0x80
cmpl $-MAX_ERRNO, %eax
jb 1f
negl %eax
pushl %eax
call __set_errno_internal
addl $4, %esp
1:
popl %edi
popl %esi
popl %edx
popl %ecx
popl %ebx
ret
END(__waitid)