| Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame^] | 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 | _GLOBAL(xmon_setjmp) |
| 16 | mflr r0 |
| 17 | STL r0,0(r3) |
| 18 | STL r1,SZL(r3) |
| 19 | STL r2,2*SZL(r3) |
| 20 | mfcr r0 |
| 21 | STL r0,3*SZL(r3) |
| 22 | STL r13,4*SZL(r3) |
| 23 | STL r14,5*SZL(r3) |
| 24 | STL r15,6*SZL(r3) |
| 25 | STL r16,7*SZL(r3) |
| 26 | STL r17,8*SZL(r3) |
| 27 | STL r18,9*SZL(r3) |
| 28 | STL r19,10*SZL(r3) |
| 29 | STL r20,11*SZL(r3) |
| 30 | STL r21,12*SZL(r3) |
| 31 | STL r22,13*SZL(r3) |
| 32 | STL r23,14*SZL(r3) |
| 33 | STL r24,15*SZL(r3) |
| 34 | STL r25,16*SZL(r3) |
| 35 | STL r26,17*SZL(r3) |
| 36 | STL r27,18*SZL(r3) |
| 37 | STL r28,19*SZL(r3) |
| 38 | STL r29,20*SZL(r3) |
| 39 | STL r30,21*SZL(r3) |
| 40 | STL r31,22*SZL(r3) |
| 41 | li r3,0 |
| 42 | blr |
| 43 | |
| 44 | _GLOBAL(xmon_longjmp) |
| 45 | CMPI r4,0 |
| 46 | bne 1f |
| 47 | li r4,1 |
| 48 | 1: LDL r13,4*SZL(r3) |
| 49 | LDL r14,5*SZL(r3) |
| 50 | LDL r15,6*SZL(r3) |
| 51 | LDL r16,7*SZL(r3) |
| 52 | LDL r17,8*SZL(r3) |
| 53 | LDL r18,9*SZL(r3) |
| 54 | LDL r19,10*SZL(r3) |
| 55 | LDL r20,11*SZL(r3) |
| 56 | LDL r21,12*SZL(r3) |
| 57 | LDL r22,13*SZL(r3) |
| 58 | LDL r23,14*SZL(r3) |
| 59 | LDL r24,15*SZL(r3) |
| 60 | LDL r25,16*SZL(r3) |
| 61 | LDL r26,17*SZL(r3) |
| 62 | LDL r27,18*SZL(r3) |
| 63 | LDL r28,19*SZL(r3) |
| 64 | LDL r29,20*SZL(r3) |
| 65 | LDL r30,21*SZL(r3) |
| 66 | LDL r31,22*SZL(r3) |
| 67 | LDL r0,3*SZL(r3) |
| 68 | mtcrf 0x38,r0 |
| 69 | LDL r0,0(r3) |
| 70 | LDL r1,SZL(r3) |
| 71 | LDL r2,2*SZL(r3) |
| 72 | mtlr r0 |
| 73 | mr r3,r4 |
| 74 | blr |
| 75 | |
| 76 | /* |
| 77 | * Grab the register values as they are now. |
| 78 | * This won't do a particularily good job because we really |
| 79 | * want our caller's caller's registers, and our caller has |
| 80 | * already executed its prologue. |
| 81 | * ToDo: We could reach back into the caller's save area to do |
| 82 | * a better job of representing the caller's state (note that |
| 83 | * that will be different for 32-bit and 64-bit, because of the |
| 84 | * different ABIs, though). |
| 85 | */ |
| 86 | _GLOBAL(xmon_save_regs) |
| 87 | STL r0,0*SZL(r3) |
| 88 | STL r2,2*SZL(r3) |
| 89 | STL r3,3*SZL(r3) |
| 90 | STL r4,4*SZL(r3) |
| 91 | STL r5,5*SZL(r3) |
| 92 | STL r6,6*SZL(r3) |
| 93 | STL r7,7*SZL(r3) |
| 94 | STL r8,8*SZL(r3) |
| 95 | STL r9,9*SZL(r3) |
| 96 | STL r10,10*SZL(r3) |
| 97 | STL r11,11*SZL(r3) |
| 98 | STL r12,12*SZL(r3) |
| 99 | STL r13,13*SZL(r3) |
| 100 | STL r14,14*SZL(r3) |
| 101 | STL r15,15*SZL(r3) |
| 102 | STL r16,16*SZL(r3) |
| 103 | STL r17,17*SZL(r3) |
| 104 | STL r18,18*SZL(r3) |
| 105 | STL r19,19*SZL(r3) |
| 106 | STL r20,20*SZL(r3) |
| 107 | STL r21,21*SZL(r3) |
| 108 | STL r22,22*SZL(r3) |
| 109 | STL r23,23*SZL(r3) |
| 110 | STL r24,24*SZL(r3) |
| 111 | STL r25,25*SZL(r3) |
| 112 | STL r26,26*SZL(r3) |
| 113 | STL r27,27*SZL(r3) |
| 114 | STL r28,28*SZL(r3) |
| 115 | STL r29,29*SZL(r3) |
| 116 | STL r30,30*SZL(r3) |
| 117 | STL r31,31*SZL(r3) |
| 118 | /* go up one stack frame for SP */ |
| 119 | LDL r4,0(r1) |
| 120 | STL r4,1*SZL(r3) |
| 121 | /* get caller's LR */ |
| 122 | LDL r0,LRSAVE(r4) |
| 123 | STL r0,_NIP-STACK_FRAME_OVERHEAD(r3) |
| 124 | STL r0,_LINK-STACK_FRAME_OVERHEAD(r3) |
| 125 | mfmsr r0 |
| 126 | STL r0,_MSR-STACK_FRAME_OVERHEAD(r3) |
| 127 | mfctr r0 |
| 128 | STL r0,_CTR-STACK_FRAME_OVERHEAD(r3) |
| 129 | mfxer r0 |
| 130 | STL r0,_XER-STACK_FRAME_OVERHEAD(r3) |
| 131 | mfcr r0 |
| 132 | STL r0,_CCR-STACK_FRAME_OVERHEAD(r3) |
| 133 | li r0,0 |
| 134 | STL r0,_TRAP-STACK_FRAME_OVERHEAD(r3) |
| 135 | blr |