projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 46d7de19 RM |
1 | /* Copyright (C) 1996 Free Software Foundation, Inc. |
| 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 | ||
| c4029823 UD |
19 | #include <sysdep.h> |
| 20 | ||
| 46d7de19 RM |
21 | /* Because the Linux version is in fact m68k/ELF and the start.? file |
| 22 | for this system (sysdeps/m68k/elf/start.S) is also used by The Hurd | |
| 23 | and therefore this files must not contain the definition of the | |
| 24 | `errno' variable (I don't know why, ask Roland), we have to define | |
| 25 | it somewhere else. | |
| 26 | ||
| 27 | ...and this place is here. */ | |
| 28 | .bss | |
| 29 | .globl errno | |
| 30 | .type errno,@object | |
| 31 | errno: .space 4 | |
| 32 | .size errno,4 | |
| 33 | .globl _errno | |
| 34 | .type _errno,@object | |
| 35 | _errno = errno /* This name is expected by hj libc.so.5 startup code. */ | |
| c4029823 UD |
36 | .globl __errno |
| 37 | .type __errno,@object | |
| 38 | __errno = errno /* This name is expected by the MT code. */ | |
| 46d7de19 RM |
39 | .text |
| 40 | ||
| f0f1bf85 UD |
41 | /* The following code is only used in the shared library when we |
| 42 | compile the reentrant version. Otherwise each system call defines | |
| 43 | each own version. */ | |
| 46d7de19 RM |
44 | |
| 45 | #ifndef PIC | |
| 46 | ||
| 46d7de19 RM |
47 | /* The syscall stubs jump here when they detect an error. */ |
| 48 | ||
| 6ed0492f UD |
49 | .globl __syscall_error |
| 50 | .type __syscall_error, @function | |
| 51 | .align 4 | |
| 52 | __syscall_error: | |
| 46d7de19 | 53 | neg.l %d0 |
| 46d7de19 | 54 | move.l %d0, errno |
| f0f1bf85 UD |
55 | #ifdef _LIBC_REENTRANT |
| 56 | move.l %d0, -(%sp) | |
| 57 | jbsr __errno_location | |
| 58 | move.l (%sp)+, (%a0) | |
| 59 | #endif | |
| 46d7de19 RM |
60 | move.l #-1, %d0 |
| 61 | /* Copy return value to %a0 for syscalls that are declared to | |
| 62 | return a pointer. */ | |
| 63 | move.l %d0, %a0 | |
| 64 | rts | |
| 6ed0492f | 65 | END (__syscall_error) |
| 46d7de19 | 66 | #endif /* PIC */ |
| f0f1bf85 | 67 | |
| 0d204b0a | 68 | ENTRY (__errno_location) |
| f0f1bf85 UD |
69 | #ifdef PIC |
| 70 | move.l (%pc, errno@GOTPC), %a0 | |
| 71 | #else | |
| 72 | lea errno, %a0 | |
| 73 | #endif | |
| 74 | rts | |
| 6ed0492f | 75 | END (__errno_location) |