136 строки
3.2 KiB
ArmAsm
136 строки
3.2 KiB
ArmAsm
/*
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* Copyright (C) 1996 Paul Mackerras.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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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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_GLOBAL(xmon_setjmp)
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mflr r0
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PPC_STL r0,0(r3)
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PPC_STL r1,SZL(r3)
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PPC_STL r2,2*SZL(r3)
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mfcr r0
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PPC_STL r0,3*SZL(r3)
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PPC_STL r13,4*SZL(r3)
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PPC_STL r14,5*SZL(r3)
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PPC_STL r15,6*SZL(r3)
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PPC_STL r16,7*SZL(r3)
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PPC_STL r17,8*SZL(r3)
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PPC_STL r18,9*SZL(r3)
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PPC_STL r19,10*SZL(r3)
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PPC_STL r20,11*SZL(r3)
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PPC_STL r21,12*SZL(r3)
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PPC_STL r22,13*SZL(r3)
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PPC_STL r23,14*SZL(r3)
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PPC_STL r24,15*SZL(r3)
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PPC_STL r25,16*SZL(r3)
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PPC_STL r26,17*SZL(r3)
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PPC_STL r27,18*SZL(r3)
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PPC_STL r28,19*SZL(r3)
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PPC_STL r29,20*SZL(r3)
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PPC_STL r30,21*SZL(r3)
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PPC_STL r31,22*SZL(r3)
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li r3,0
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blr
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_GLOBAL(xmon_longjmp)
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PPC_LCMPI r4,0
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bne 1f
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li r4,1
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1: PPC_LL r13,4*SZL(r3)
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PPC_LL r14,5*SZL(r3)
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PPC_LL r15,6*SZL(r3)
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PPC_LL r16,7*SZL(r3)
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PPC_LL r17,8*SZL(r3)
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PPC_LL r18,9*SZL(r3)
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PPC_LL r19,10*SZL(r3)
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PPC_LL r20,11*SZL(r3)
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PPC_LL r21,12*SZL(r3)
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PPC_LL r22,13*SZL(r3)
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PPC_LL r23,14*SZL(r3)
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PPC_LL r24,15*SZL(r3)
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PPC_LL r25,16*SZL(r3)
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PPC_LL r26,17*SZL(r3)
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PPC_LL r27,18*SZL(r3)
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PPC_LL r28,19*SZL(r3)
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PPC_LL r29,20*SZL(r3)
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PPC_LL r30,21*SZL(r3)
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PPC_LL r31,22*SZL(r3)
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PPC_LL r0,3*SZL(r3)
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mtcrf 0x38,r0
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PPC_LL r0,0(r3)
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PPC_LL r1,SZL(r3)
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PPC_LL r2,2*SZL(r3)
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mtlr r0
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mr r3,r4
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blr
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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 particularily 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(xmon_save_regs)
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PPC_STL r0,0*SZL(r3)
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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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/* 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,_NIP-STACK_FRAME_OVERHEAD(r3)
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PPC_STL r0,_LINK-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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blr
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