projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 04277e02 | 1 | /* Copyright (C) 2005-2019 Free Software Foundation, Inc. |
| f10eff58 DJ |
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 | |
| ab84e3ff PE |
15 | License along with the GNU C Library. If not, see |
| 16 | <http://www.gnu.org/licenses/>. */ | |
| f10eff58 | 17 | |
| de96d148 DJ |
18 | #include <sysdep.h> |
| 19 | ||
| 20 | /* In the EABI syscall interface, we don't need a special syscall to | |
| 21 | implement syscall(). It won't work reliably with 64-bit arguments | |
| 22 | (but that is true on many modern platforms). */ | |
| 23 | ||
| 24 | ENTRY (syscall) | |
| 25 | mov ip, sp | |
| 55668624 | 26 | push {r4, r5, r6, r7} |
| 01b32e73 TS |
27 | cfi_adjust_cfa_offset (16) |
| 28 | cfi_rel_offset (r4, 0) | |
| 29 | cfi_rel_offset (r5, 4) | |
| 30 | cfi_rel_offset (r6, 8) | |
| 31 | cfi_rel_offset (r7, 12) | |
| de96d148 DJ |
32 | mov r7, r0 |
| 33 | mov r0, r1 | |
| 34 | mov r1, r2 | |
| 35 | mov r2, r3 | |
| 36 | ldmfd ip, {r3, r4, r5, r6} | |
| 37 | swi 0x0 | |
| 55668624 | 38 | pop {r4, r5, r6, r7} |
| 01b32e73 TS |
39 | cfi_adjust_cfa_offset (-16) |
| 40 | cfi_restore (r4) | |
| 41 | cfi_restore (r5) | |
| 42 | cfi_restore (r6) | |
| 43 | cfi_restore (r7) | |
| de96d148 | 44 | cmn r0, #4096 |
| 6ccd0107 | 45 | it cc |
| de96d148 DJ |
46 | RETINSTR(cc, lr) |
| 47 | b PLTJMP(syscall_error) | |
| 48 | PSEUDO_END (syscall) |