projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| f78541dc PM |
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> | |
| 46f52210 | 14 | #include <asm/ptrace.h> |
| ec0c464c | 15 | #include <asm/asm-compat.h> |
| f78541dc | 16 | |
| f78541dc PM |
17 | /* |
| 18 | * Grab the register values as they are now. | |
| 25985edc | 19 | * This won't do a particularly good job because we really |
| f78541dc PM |
20 | * want our caller's caller's registers, and our caller has |
| 21 | * already executed its prologue. | |
| 22 | * ToDo: We could reach back into the caller's save area to do | |
| 23 | * a better job of representing the caller's state (note that | |
| 24 | * that will be different for 32-bit and 64-bit, because of the | |
| 25 | * different ABIs, though). | |
| 26 | */ | |
| 322b4394 | 27 | _GLOBAL(ppc_save_regs) |
| 3ddfbcf1 | 28 | PPC_STL r0,0*SZL(r3) |
| a1f3ae3f CL |
29 | #ifdef CONFIG_PPC32 |
| 30 | stmw r2, 2*SZL(r3) | |
| 31 | #else | |
| 3ddfbcf1 DG |
32 | PPC_STL r2,2*SZL(r3) |
| 33 | PPC_STL r3,3*SZL(r3) | |
| 34 | PPC_STL r4,4*SZL(r3) | |
| 35 | PPC_STL r5,5*SZL(r3) | |
| 36 | PPC_STL r6,6*SZL(r3) | |
| 37 | PPC_STL r7,7*SZL(r3) | |
| 38 | PPC_STL r8,8*SZL(r3) | |
| 39 | PPC_STL r9,9*SZL(r3) | |
| 40 | PPC_STL r10,10*SZL(r3) | |
| 41 | PPC_STL r11,11*SZL(r3) | |
| 42 | PPC_STL r12,12*SZL(r3) | |
| 43 | PPC_STL r13,13*SZL(r3) | |
| 44 | PPC_STL r14,14*SZL(r3) | |
| 45 | PPC_STL r15,15*SZL(r3) | |
| 46 | PPC_STL r16,16*SZL(r3) | |
| 47 | PPC_STL r17,17*SZL(r3) | |
| 48 | PPC_STL r18,18*SZL(r3) | |
| 49 | PPC_STL r19,19*SZL(r3) | |
| 50 | PPC_STL r20,20*SZL(r3) | |
| 51 | PPC_STL r21,21*SZL(r3) | |
| 52 | PPC_STL r22,22*SZL(r3) | |
| 53 | PPC_STL r23,23*SZL(r3) | |
| 54 | PPC_STL r24,24*SZL(r3) | |
| 55 | PPC_STL r25,25*SZL(r3) | |
| 56 | PPC_STL r26,26*SZL(r3) | |
| 57 | PPC_STL r27,27*SZL(r3) | |
| 58 | PPC_STL r28,28*SZL(r3) | |
| 59 | PPC_STL r29,29*SZL(r3) | |
| 60 | PPC_STL r30,30*SZL(r3) | |
| 61 | PPC_STL r31,31*SZL(r3) | |
| a1f3ae3f | 62 | #endif |
| f78541dc | 63 | /* go up one stack frame for SP */ |
| 3ddfbcf1 DG |
64 | PPC_LL r4,0(r1) |
| 65 | PPC_STL r4,1*SZL(r3) | |
| f78541dc | 66 | /* get caller's LR */ |
| 3ddfbcf1 DG |
67 | PPC_LL r0,LRSAVE(r4) |
| 68 | PPC_STL r0,_NIP-STACK_FRAME_OVERHEAD(r3) | |
| 69 | PPC_STL r0,_LINK-STACK_FRAME_OVERHEAD(r3) | |
| f78541dc | 70 | mfmsr r0 |
| 3ddfbcf1 | 71 | PPC_STL r0,_MSR-STACK_FRAME_OVERHEAD(r3) |
| f78541dc | 72 | mfctr r0 |
| 3ddfbcf1 | 73 | PPC_STL r0,_CTR-STACK_FRAME_OVERHEAD(r3) |
| f78541dc | 74 | mfxer r0 |
| 3ddfbcf1 | 75 | PPC_STL r0,_XER-STACK_FRAME_OVERHEAD(r3) |
| f78541dc | 76 | mfcr r0 |
| 3ddfbcf1 | 77 | PPC_STL r0,_CCR-STACK_FRAME_OVERHEAD(r3) |
| f78541dc | 78 | li r0,0 |
| 3ddfbcf1 | 79 | PPC_STL r0,_TRAP-STACK_FRAME_OVERHEAD(r3) |
| f78541dc | 80 | blr |