projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 01b32e73 | 1 | /* Copyright (C) 2005, 2010 Free Software Foundation, Inc. |
| 02a9f771 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/>. */ | |
| 02a9f771 DJ |
17 | |
| 18 | #include <tcb-offsets.h> | |
| 19 | ||
| 20 | /* Save the PID value. */ | |
| 21 | #define SAVE_PID \ | |
| 22 | str lr, [sp, #-4]!; /* Save LR. */ \ | |
| 01b32e73 TS |
23 | cfi_adjust_cfa_offset (4); \ |
| 24 | cfi_rel_offset (lr, 0); \ | |
| 02a9f771 DJ |
25 | mov r0, #0xffff0fff; /* Point to the high page. */ \ |
| 26 | mov lr, pc; /* Save our return address. */ \ | |
| 27 | sub pc, r0, #31; /* Jump to the TLS entry. */ \ | |
| 28 | ldr lr, [sp], #4; /* Restore LR. */ \ | |
| 01b32e73 TS |
29 | cfi_adjust_cfa_offset (-4); \ |
| 30 | cfi_restore (lr); \ | |
| 02a9f771 DJ |
31 | mov r2, r0; /* Save the TLS addr in r2. */ \ |
| 32 | ldr r3, [r2, #PID_OFFSET]; /* Load the saved PID. */ \ | |
| 33 | rsb r0, r3, #0; /* Negate it. */ \ | |
| 34 | str r0, [r2, #PID_OFFSET] /* Store the temporary PID. */ | |
| 35 | ||
| 36 | /* Restore the old PID value in the parent. */ | |
| 37 | #define RESTORE_PID \ | |
| 38 | cmp r0, #0; /* If we are the parent... */ \ | |
| 39 | strne r3, [r2, #PID_OFFSET] /* ... restore the saved PID. */ | |
| 40 | ||
| 41 | #include "../vfork.S" |