| /* |
| * Copyright (C) 1996 Paul Mackerras. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * NOTE: assert(sizeof(buf) > 23 * sizeof(long)) |
| */ |
| #include <asm/processor.h> |
| #include <asm/ppc_asm.h> |
| #include <asm/asm-offsets.h> |
| |
| /* |
| * Grab the register values as they are now. |
| * This won't do a particularily good job because we really |
| * want our caller's caller's registers, and our caller has |
| * already executed its prologue. |
| * ToDo: We could reach back into the caller's save area to do |
| * a better job of representing the caller's state (note that |
| * that will be different for 32-bit and 64-bit, because of the |
| * different ABIs, though). |
| */ |
| _GLOBAL(ppc_save_regs) |
| PPC_STL r0,0*SZL(r3) |
| PPC_STL r2,2*SZL(r3) |
| PPC_STL r3,3*SZL(r3) |
| PPC_STL r4,4*SZL(r3) |
| PPC_STL r5,5*SZL(r3) |
| PPC_STL r6,6*SZL(r3) |
| PPC_STL r7,7*SZL(r3) |
| PPC_STL r8,8*SZL(r3) |
| PPC_STL r9,9*SZL(r3) |
| PPC_STL r10,10*SZL(r3) |
| PPC_STL r11,11*SZL(r3) |
| PPC_STL r12,12*SZL(r3) |
| PPC_STL r13,13*SZL(r3) |
| PPC_STL r14,14*SZL(r3) |
| PPC_STL r15,15*SZL(r3) |
| PPC_STL r16,16*SZL(r3) |
| PPC_STL r17,17*SZL(r3) |
| PPC_STL r18,18*SZL(r3) |
| PPC_STL r19,19*SZL(r3) |
| PPC_STL r20,20*SZL(r3) |
| PPC_STL r21,21*SZL(r3) |
| PPC_STL r22,22*SZL(r3) |
| PPC_STL r23,23*SZL(r3) |
| PPC_STL r24,24*SZL(r3) |
| PPC_STL r25,25*SZL(r3) |
| PPC_STL r26,26*SZL(r3) |
| PPC_STL r27,27*SZL(r3) |
| PPC_STL r28,28*SZL(r3) |
| PPC_STL r29,29*SZL(r3) |
| PPC_STL r30,30*SZL(r3) |
| PPC_STL r31,31*SZL(r3) |
| /* go up one stack frame for SP */ |
| PPC_LL r4,0(r1) |
| PPC_STL r4,1*SZL(r3) |
| /* get caller's LR */ |
| PPC_LL r0,LRSAVE(r4) |
| PPC_STL r0,_NIP-STACK_FRAME_OVERHEAD(r3) |
| PPC_STL r0,_LINK-STACK_FRAME_OVERHEAD(r3) |
| mfmsr r0 |
| PPC_STL r0,_MSR-STACK_FRAME_OVERHEAD(r3) |
| mfctr r0 |
| PPC_STL r0,_CTR-STACK_FRAME_OVERHEAD(r3) |
| mfxer r0 |
| PPC_STL r0,_XER-STACK_FRAME_OVERHEAD(r3) |
| mfcr r0 |
| PPC_STL r0,_CCR-STACK_FRAME_OVERHEAD(r3) |
| li r0,0 |
| PPC_STL r0,_TRAP-STACK_FRAME_OVERHEAD(r3) |
| blr |
