Annotation of sys/arch/mips64/mips64/lcore_ddb.S, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: lcore_ddb.S,v 1.8 2005/12/20 07:06:26 miod Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2001-2003 Opsycon AB (www.opsycon.se / www.opsycon.com)
! 5: *
! 6: * Redistribution and use in source and binary forms, with or without
! 7: * modification, are permitted provided that the following conditions
! 8: * are met:
! 9: * 1. Redistributions of source code must retain the above copyright
! 10: * notice, this list of conditions and the following disclaimer.
! 11: * 2. Redistributions in binary form must reproduce the above copyright
! 12: * notice, this list of conditions and the following disclaimer in the
! 13: * documentation and/or other materials provided with the distribution.
! 14: *
! 15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
! 16: * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 18: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
! 19: * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 20: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 21: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 22: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 23: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 24: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 25: * SUCH DAMAGE.
! 26: *
! 27: */
! 28: #include <sys/errno.h>
! 29: #include <sys/syscall.h>
! 30:
! 31: #include <machine/param.h>
! 32: #include <machine/psl.h>
! 33: #include <machine/asm.h>
! 34: #include <machine/cpu.h>
! 35: #include <machine/regnum.h>
! 36: #include <machine/cpustate.h>
! 37: #include <machine/trap.h>
! 38:
! 39: #include "assym.h"
! 40:
! 41: .set noreorder # Noreorder is default style!
! 42:
! 43: #ifdef __LP64__
! 44: LEAF(kdbpeekd, 0)
! 45: PTR_L t0, curprocpaddr
! 46: li v0, KT_DDBERR
! 47: and v1, a0, 7 # unaligned ?
! 48: bne v1, zero, 1f
! 49: sw v0, PCB_ONFAULT(t0)
! 50:
! 51: ld v0, (a0)
! 52: jr ra
! 53: sw zero, PCB_ONFAULT(t0)
! 54:
! 55: 1:
! 56: LDHI v0, 0(a0)
! 57: LDLO v0, 7(a0)
! 58: jr ra
! 59: sw zero, PCB_ONFAULT(t0)
! 60: END(kdbpeekd)
! 61: #endif
! 62:
! 63: LEAF(kdbpeek, 0)
! 64: PTR_L t0, curprocpaddr
! 65: li v0, KT_DDBERR
! 66: and v1, a0, 3 # unaligned ?
! 67: bne v1, zero, 1f
! 68: sw v0, PCB_ONFAULT(t0)
! 69:
! 70: lw v0, (a0)
! 71: jr ra
! 72: sw zero, PCB_ONFAULT(t0)
! 73:
! 74: 1:
! 75: LWHI v0, 0(a0)
! 76: LWLO v0, 3(a0)
! 77: jr ra
! 78: sw zero, PCB_ONFAULT(t0)
! 79: END(kdbpeek)
! 80:
! 81: LEAF(kdbpeekw, 0)
! 82: PTR_L t0, curprocpaddr
! 83: li v0, KT_DDBERR
! 84: and v1, a0, 1 # unaligned ?
! 85: bne v1, zero, 1f
! 86: sw v0, PCB_ONFAULT(t0)
! 87:
! 88: lh v0, (a0)
! 89: jr ra
! 90: sw zero, PCB_ONFAULT(t0)
! 91:
! 92: 1:
! 93: li v0, -1 # error!
! 94: jr ra
! 95: sw zero, PCB_ONFAULT(t0)
! 96: END(kdbpeekw)
! 97:
! 98: LEAF(kdbpeekb, 0)
! 99: PTR_L t0, curprocpaddr
! 100: li v0, KT_DDBERR
! 101: sw v0, PCB_ONFAULT(t0)
! 102: lb v0, 0(a0)
! 103: jr ra
! 104: sw zero, PCB_ONFAULT(t0)
! 105: END(kdbpeekb)
! 106:
! 107: .globl kt_ddberr
! 108: kt_ddberr:
! 109: jr ra
! 110: li v0, -1
! 111:
! 112: #ifdef __LP64__
! 113: LEAF(kdbpoked, 0)
! 114: PTR_L t0, curprocpaddr
! 115: li v0, KT_DDBERR
! 116: and v1, a0, 7 # unaligned ?
! 117: bne v1, zero, 1f
! 118: sw v0, PCB_ONFAULT(t0)
! 119:
! 120: sd a1, (a0)
! 121: jr ra
! 122: sw zero, PCB_ONFAULT(t0)
! 123:
! 124: 1:
! 125: SDHI a1, 0(a0)
! 126: SDLO a1, 7(a0)
! 127: jr ra
! 128: sw zero, PCB_ONFAULT(t0)
! 129: END(kdbpoked)
! 130: #endif
! 131:
! 132:
! 133: LEAF(kdbpoke, 0)
! 134: PTR_L t0, curprocpaddr
! 135: li v0, KT_DDBERR
! 136: and v1, a0, 3 # unaligned ?
! 137: bne v1, zero, 1f
! 138: sw v0, PCB_ONFAULT(t0)
! 139:
! 140: sw a1, (a0)
! 141: jr ra
! 142: sw zero, PCB_ONFAULT(t0)
! 143:
! 144: 1:
! 145: SWHI a1, 0(a0)
! 146: SWLO a1, 3(a0)
! 147: jr ra
! 148: sw zero, PCB_ONFAULT(t0)
! 149: END(kdbpoke)
! 150:
! 151: LEAF(kdbpokew, 0)
! 152: PTR_L t0, curprocpaddr
! 153: li v0, KT_DDBERR
! 154: and v1, a0, 1 # unaligned ?
! 155: bne v1, zero, 1f
! 156: sw v0, PCB_ONFAULT(t0)
! 157:
! 158: sh a1, (a0)
! 159: jr ra
! 160: sw zero, PCB_ONFAULT(t0)
! 161:
! 162: 1:
! 163: jr ra
! 164: sw zero, PCB_ONFAULT(t0)
! 165: END(kdbpokew)
! 166:
! 167: LEAF(kdbpokeb, 0)
! 168: PTR_L t0, curprocpaddr
! 169: li v0, KT_DDBERR
! 170: sw v0, PCB_ONFAULT(t0)
! 171: sb a1, 0(a0)
! 172: jr ra
! 173: sw zero, PCB_ONFAULT(t0)
! 174: END(kdbpokeb)
! 175:
! 176: LEAF(Debugger, 0)
! 177: break BREAK_SOVER_VAL
! 178: jr ra
! 179: nop
! 180: END(Debugger)
! 181:
! 182: LEAF(setjmp, 0)
! 183: mfc0 v0, COP_0_STATUS_REG # Later the "real" spl value!
! 184: REG_S s0, REGSZ * 0(a0)
! 185: REG_S s1, REGSZ * 1(a0)
! 186: REG_S s2, REGSZ * 2(a0)
! 187: REG_S s3, REGSZ * 3(a0)
! 188: REG_S s4, REGSZ * 4(a0)
! 189: REG_S s5, REGSZ * 5(a0)
! 190: REG_S s6, REGSZ * 6(a0)
! 191: REG_S s7, REGSZ * 7(a0)
! 192: REG_S s8, REGSZ * 8(a0)
! 193: REG_S sp, REGSZ * 9(a0)
! 194: REG_S ra, REGSZ * 10(a0)
! 195: REG_S v0, REGSZ * 11(a0)
! 196: jr ra
! 197: li v0, 0 # setjmp return
! 198: END(setjmp)
! 199:
! 200: LEAF(longjmp, 0)
! 201: REG_L v0, REGSZ * 11(a0)
! 202: REG_L ra, REGSZ * 10(a0)
! 203: REG_L s0, REGSZ * 0(a0)
! 204: REG_L s1, REGSZ * 1(a0)
! 205: REG_L s2, REGSZ * 2(a0)
! 206: REG_L s3, REGSZ * 3(a0)
! 207: REG_L s4, REGSZ * 4(a0)
! 208: REG_L s5, REGSZ * 5(a0)
! 209: REG_L s6, REGSZ * 6(a0)
! 210: REG_L s7, REGSZ * 7(a0)
! 211: REG_L s8, REGSZ * 8(a0)
! 212: REG_L sp, REGSZ * 9(a0)
! 213: mtc0 v0, COP_0_STATUS_REG # Later the "real" spl value!
! 214: ITLBNOPFIX
! 215: jr ra
! 216: li v0, 1 # longjmp return
! 217: END(longjmp)
! 218:
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