| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 1995,96,97,98,99,2000,2002,2005 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 Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the 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 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, write to the Free |
| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 17 | 02111-1307 USA. */ |
| 18 | |
| 19 | #define _ERRNO_H 1 |
| 20 | #include <features.h> |
| 21 | #include <bits/errno.h> |
| 22 | #include <sys/syscall.h> |
| 23 | |
| 24 | .text |
| 25 | .global mmap |
| 26 | .type mmap,%function |
| 27 | mmap: |
| 28 | |
| 29 | /* Save registers. */ |
| 30 | movl %ebx, %edx |
| 31 | |
| 32 | movl $__NR_mmap, %eax /* System call number in %eax. */ |
| 33 | |
| 34 | lea 4(%esp), %ebx /* Address of args is 1st arg. */ |
| 35 | |
| 36 | /* Do the system call trap. */ |
| 37 | int $0x80 |
| 38 | |
| 39 | /* Restore registers. */ |
| 40 | movl %edx, %ebx |
| 41 | |
| 42 | /* If 0 > %eax > -4096 there was an error. */ |
| 43 | cmpl $-4096, %eax |
| 44 | ja __syscall_error |
| 45 | |
| 46 | /* Successful; return the syscall's value. */ |
| 47 | ret |
| 48 | |
| 49 | .size mmap,.-mmap |
| 50 | |
| 51 | libc_hidden_def(mmap) |