diff options
Diffstat (limited to 'arch/powerpc/kernel/ppc_save_regs.S')
| -rw-r--r-- | arch/powerpc/kernel/ppc_save_regs.S | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/ppc_save_regs.S b/arch/powerpc/kernel/ppc_save_regs.S new file mode 100644 index 00000000000..5113bd2285e --- /dev/null +++ b/arch/powerpc/kernel/ppc_save_regs.S | |||
| @@ -0,0 +1,74 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (C) 1996 Paul Mackerras. | ||
| 3 | * | ||
| 4 | * This program is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU General Public License | ||
| 6 | * as published by the Free Software Foundation; either version | ||
| 7 | * 2 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * NOTE: assert(sizeof(buf) > 23 * sizeof(long)) | ||
| 10 | */ | ||
| 11 | #include <asm/processor.h> | ||
| 12 | #include <asm/ppc_asm.h> | ||
| 13 | #include <asm/asm-offsets.h> | ||
| 14 | |||
| 15 | /* | ||
| 16 | * Grab the register values as they are now. | ||
| 17 | * This won't do a particularily good job because we really | ||
| 18 | * want our caller's caller's registers, and our caller has | ||
| 19 | * already executed its prologue. | ||
| 20 | * ToDo: We could reach back into the caller's save area to do | ||
| 21 | * a better job of representing the caller's state (note that | ||
| 22 | * that will be different for 32-bit and 64-bit, because of the | ||
| 23 | * different ABIs, though). | ||
| 24 | */ | ||
| 25 | _GLOBAL(ppc_save_regs) | ||
| 26 | PPC_STL r0,0*SZL(r3) | ||
| 27 | PPC_STL r2,2*SZL(r3) | ||
| 28 | PPC_STL r3,3*SZL(r3) | ||
| 29 | PPC_STL r4,4*SZL(r3) | ||
| 30 | PPC_STL r5,5*SZL(r3) | ||
| 31 | PPC_STL r6,6*SZL(r3) | ||
| 32 | PPC_STL r7,7*SZL(r3) | ||
| 33 | PPC_STL r8,8*SZL(r3) | ||
| 34 | PPC_STL r9,9*SZL(r3) | ||
| 35 | PPC_STL r10,10*SZL(r3) | ||
| 36 | PPC_STL r11,11*SZL(r3) | ||
| 37 | PPC_STL r12,12*SZL(r3) | ||
| 38 | PPC_STL r13,13*SZL(r3) | ||
| 39 | PPC_STL r14,14*SZL(r3) | ||
| 40 | PPC_STL r15,15*SZL(r3) | ||
| 41 | PPC_STL r16,16*SZL(r3) | ||
| 42 | PPC_STL r17,17*SZL(r3) | ||
| 43 | PPC_STL r18,18*SZL(r3) | ||
| 44 | PPC_STL r19,19*SZL(r3) | ||
| 45 | PPC_STL r20,20*SZL(r3) | ||
| 46 | PPC_STL r21,21*SZL(r3) | ||
| 47 | PPC_STL r22,22*SZL(r3) | ||
| 48 | PPC_STL r23,23*SZL(r3) | ||
| 49 | PPC_STL r24,24*SZL(r3) | ||
| 50 | PPC_STL r25,25*SZL(r3) | ||
| 51 | PPC_STL r26,26*SZL(r3) | ||
| 52 | PPC_STL r27,27*SZL(r3) | ||
| 53 | PPC_STL r28,28*SZL(r3) | ||
| 54 | PPC_STL r29,29*SZL(r3) | ||
| 55 | PPC_STL r30,30*SZL(r3) | ||
| 56 | PPC_STL r31,31*SZL(r3) | ||
| 57 | /* go up one stack frame for SP */ | ||
| 58 | PPC_LL r4,0(r1) | ||
| 59 | PPC_STL r4,1*SZL(r3) | ||
| 60 | /* get caller's LR */ | ||
| 61 | PPC_LL r0,LRSAVE(r4) | ||
| 62 | PPC_STL r0,_NIP-STACK_FRAME_OVERHEAD(r3) | ||
| 63 | PPC_STL r0,_LINK-STACK_FRAME_OVERHEAD(r3) | ||
| 64 | mfmsr r0 | ||
| 65 | PPC_STL r0,_MSR-STACK_FRAME_OVERHEAD(r3) | ||
| 66 | mfctr r0 | ||
| 67 | PPC_STL r0,_CTR-STACK_FRAME_OVERHEAD(r3) | ||
| 68 | mfxer r0 | ||
| 69 | PPC_STL r0,_XER-STACK_FRAME_OVERHEAD(r3) | ||
| 70 | mfcr r0 | ||
| 71 | PPC_STL r0,_CCR-STACK_FRAME_OVERHEAD(r3) | ||
| 72 | li r0,0 | ||
| 73 | PPC_STL r0,_TRAP-STACK_FRAME_OVERHEAD(r3) | ||
| 74 | blr | ||