projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| edf5b2d7 | 1 | /* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc. |
| 28f540f4 RM |
2 | This file is part of the GNU C Library. |
| 3 | ||
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 5 | modify it under the terms of the GNU Library General Public License as | |
| 6 | published by the Free Software Foundation; either version 2 of the | |
| 7 | License, or (at your option) any later version. | |
| 8 | ||
| 9 | The GNU C Library is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | Library General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Library General Public | |
| 15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
| 16 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
| 17 | Cambridge, MA 02139, USA. */ | |
| 18 | ||
| 19 | #include <sysdep.h> | |
| 20 | #define _ERRNO_H | |
| 21 | #include <errnos.h> | |
| 22 | ||
| 23 | .globl C_SYMBOL_NAME(errno) | |
| 24 | .globl syscall_error | |
| 25 | ||
| 26 | #undef syscall_error | |
| 27 | #ifdef NO_UNDERSCORES | |
| 28 | __syscall_error: | |
| 29 | #else | |
| 30 | syscall_error: | |
| 31 | #endif | |
| 32 | #if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN | |
| 33 | /* We translate the system's EWOULDBLOCK error into EAGAIN. | |
| 34 | The GNU C library always defines EWOULDBLOCK==EAGAIN. | |
| 35 | EWOULDBLOCK_sys is the original number. */ | |
| 36 | cmpl $EWOULDBLOCK_sys, %eax /* Is it the old EWOULDBLOCK? */ | |
| 37 | jne notb /* Branch if not. */ | |
| 38 | movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */ | |
| 439d1d45 | 39 | notb: |
| edf5b2d7 | 40 | #endif |
| 439d1d45 RM |
41 | #ifndef PIC |
| 42 | movl %eax, C_SYMBOL_NAME(errno) | |
| edf5b2d7 UD |
43 | #ifdef _LIBC_REENTRANT |
| 44 | pushl %eax | |
| 45 | call __errno_location | |
| 46 | popl %ecx | |
| 47 | movl %ecx, (%eax) | |
| 48 | #endif | |
| 439d1d45 | 49 | #else |
| 1d234146 RM |
50 | /* The caller has pushed %ebx and then set it up to |
| 51 | point to the GOT before calling us through the PLT. */ | |
| 52 | movl C_SYMBOL_NAME(errno@GOT)(%ebx), %ecx | |
| edf5b2d7 UD |
53 | |
| 54 | #ifndef _LIBC_REENTRANT | |
| 1d234146 RM |
55 | /* Pop %ebx value saved before jumping here. */ |
| 56 | popl %ebx | |
| 439d1d45 | 57 | movl %eax, (%ecx) |
| edf5b2d7 UD |
58 | #else |
| 59 | movl %eax, (%ecx) | |
| 60 | pushl %eax | |
| 61 | call C_SYMBOL_NAME(__errno_location@PLT) | |
| 62 | popl %ecx | |
| 63 | /* Pop %ebx value saved before jumping here. */ | |
| 64 | popl %ebx | |
| 65 | movl %ecx, (%eax) | |
| 66 | #endif | |
| 439d1d45 | 67 | #endif |
| 28f540f4 RM |
68 | movl $-1, %eax |
| 69 | ret | |
| edf5b2d7 UD |
70 | |
| 71 | #ifdef __ELF__ | |
| 72 | #undef __syscall_error | |
| 73 | .Lfe2: | |
| 74 | .size __syscall_error, .Lfe2-__syscall_error | |
| 75 | #endif |