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80 lines
2.1 KiB
80 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* Copyright (C) 1996 Paul Mackerras. |
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* |
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* NOTE: assert(sizeof(buf) > 23 * sizeof(long)) |
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*/ |
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#include <asm/processor.h> |
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#include <asm/ppc_asm.h> |
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#include <asm/asm-offsets.h> |
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#include <asm/ptrace.h> |
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#include <asm/asm-compat.h> |
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/* |
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* Grab the register values as they are now. |
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* This won't do a particularly good job because we really |
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* want our caller's caller's registers, and our caller has |
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* already executed its prologue. |
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* ToDo: We could reach back into the caller's save area to do |
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* a better job of representing the caller's state (note that |
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* that will be different for 32-bit and 64-bit, because of the |
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* different ABIs, though). |
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*/ |
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_GLOBAL(ppc_save_regs) |
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PPC_STL r0,0*SZL(r3) |
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#ifdef CONFIG_PPC32 |
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stmw r2, 2*SZL(r3) |
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#else |
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PPC_STL r2,2*SZL(r3) |
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PPC_STL r3,3*SZL(r3) |
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PPC_STL r4,4*SZL(r3) |
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PPC_STL r5,5*SZL(r3) |
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PPC_STL r6,6*SZL(r3) |
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PPC_STL r7,7*SZL(r3) |
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PPC_STL r8,8*SZL(r3) |
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PPC_STL r9,9*SZL(r3) |
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PPC_STL r10,10*SZL(r3) |
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PPC_STL r11,11*SZL(r3) |
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PPC_STL r12,12*SZL(r3) |
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PPC_STL r13,13*SZL(r3) |
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PPC_STL r14,14*SZL(r3) |
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PPC_STL r15,15*SZL(r3) |
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PPC_STL r16,16*SZL(r3) |
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PPC_STL r17,17*SZL(r3) |
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PPC_STL r18,18*SZL(r3) |
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PPC_STL r19,19*SZL(r3) |
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PPC_STL r20,20*SZL(r3) |
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PPC_STL r21,21*SZL(r3) |
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PPC_STL r22,22*SZL(r3) |
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PPC_STL r23,23*SZL(r3) |
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PPC_STL r24,24*SZL(r3) |
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PPC_STL r25,25*SZL(r3) |
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PPC_STL r26,26*SZL(r3) |
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PPC_STL r27,27*SZL(r3) |
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PPC_STL r28,28*SZL(r3) |
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PPC_STL r29,29*SZL(r3) |
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PPC_STL r30,30*SZL(r3) |
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PPC_STL r31,31*SZL(r3) |
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lbz r0,PACAIRQSOFTMASK(r13) |
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PPC_STL r0,SOFTE-STACK_FRAME_OVERHEAD(r3) |
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#endif |
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/* go up one stack frame for SP */ |
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PPC_LL r4,0(r1) |
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PPC_STL r4,1*SZL(r3) |
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/* get caller's LR */ |
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PPC_LL r0,LRSAVE(r4) |
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PPC_STL r0,_LINK-STACK_FRAME_OVERHEAD(r3) |
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mflr r0 |
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PPC_STL r0,_NIP-STACK_FRAME_OVERHEAD(r3) |
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mfmsr r0 |
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PPC_STL r0,_MSR-STACK_FRAME_OVERHEAD(r3) |
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mfctr r0 |
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PPC_STL r0,_CTR-STACK_FRAME_OVERHEAD(r3) |
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mfxer r0 |
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PPC_STL r0,_XER-STACK_FRAME_OVERHEAD(r3) |
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mfcr r0 |
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PPC_STL r0,_CCR-STACK_FRAME_OVERHEAD(r3) |
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li r0,0 |
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PPC_STL r0,_TRAP-STACK_FRAME_OVERHEAD(r3) |
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PPC_STL r0,ORIG_GPR3-STACK_FRAME_OVERHEAD(r3) |
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blr
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