projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public | |
| 3 | * License. See the file "COPYING" in the main directory of this archive | |
| 4 | * for more details. | |
| 5 | * | |
| 6 | * Copyright (C) 1994, 1995, 1996, 1998, 1999, 2002, 2003 Ralf Baechle | |
| 79add627 | 7 | * Copyright (C) 1996 David S. Miller (davem@davemloft.net) |
| 1da177e4 LT |
8 | * Copyright (C) 1994, 1995, 1996, by Andreas Busse |
| 9 | * Copyright (C) 1999 Silicon Graphics, Inc. | |
| 10 | * Copyright (C) 2000 MIPS Technologies, Inc. | |
| 11 | * written by Carsten Langgaard, carstenl@mips.com | |
| 12 | */ | |
| 1da177e4 LT |
13 | #include <asm/asm.h> |
| 14 | #include <asm/cachectl.h> | |
| 1da177e4 | 15 | #include <asm/mipsregs.h> |
| 048eb582 | 16 | #include <asm/asm-offsets.h> |
| 1da177e4 LT |
17 | #include <asm/regdef.h> |
| 18 | #include <asm/stackframe.h> | |
| 19 | #include <asm/thread_info.h> | |
| 20 | ||
| 21 | #include <asm/asmmacro.h> | |
| 22 | ||
| 1da177e4 LT |
23 | /* |
| 24 | * task_struct *resume(task_struct *prev, task_struct *next, | |
| 1a3d5957 | 25 | * struct thread_info *next_ti) |
| 1da177e4 LT |
26 | */ |
| 27 | .align 5 | |
| 28 | LEAF(resume) | |
| 5323180d AN |
29 | mfc0 t1, CP0_STATUS |
| 30 | LONG_S t1, THREAD_STATUS(a0) | |
| 1da177e4 LT |
31 | cpu_save_nonscratch a0 |
| 32 | LONG_S ra, THREAD_REG31(a0) | |
| 33 | ||
| 1400eb65 | 34 | #if defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_SMP) |
| 8b3c569a | 35 | PTR_LA t8, __stack_chk_guard |
| 1400eb65 GF |
36 | LONG_L t9, TASK_STACK_CANARY(a1) |
| 37 | LONG_S t9, 0(t8) | |
| 38 | #endif | |
| 39 | ||
| 1da177e4 LT |
40 | /* |
| 41 | * The order of restoring the registers takes care of the race | |
| 42 | * updating $28, $29 and kernelsp without disabling ints. | |
| 43 | */ | |
| 44 | move $28, a2 | |
| 45 | cpu_restore_nonscratch a1 | |
| 46 | ||
| 3bd39664 | 47 | PTR_ADDU t0, $28, _THREAD_SIZE - 32 |
| 1da177e4 | 48 | set_saved_sp t0, t1, t2 |
| 1da177e4 LT |
49 | mfc0 t1, CP0_STATUS /* Do we really need this? */ |
| 50 | li a3, 0xff01 | |
| 51 | and t1, a3 | |
| 52 | LONG_L a2, THREAD_STATUS(a1) | |
| 53 | nor a3, $0, a3 | |
| 54 | and a2, a3 | |
| 55 | or a2, t1 | |
| 56 | mtc0 a2, CP0_STATUS | |
| 57 | move v0, a0 | |
| 58 | jr ra | |
| 59 | END(resume) |