1 /*- 2 * Copyright (c) 2006 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 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 AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kdb.h> 33 #include <sys/kernel.h> 34 #include <sys/proc.h> 35 #include <sys/signal.h> 36 37 #include <machine/gdb_machdep.h> 38 #include <machine/pcb.h> 39 #include <machine/reg.h> 40 41 #include <machine/hid.h> 42 #include <machine/spr.h> 43 44 #include <machine/trap.h> 45 46 #include <gdb/gdb.h> 47 #include <gdb/gdb_int.h> 48 49 void * 50 gdb_cpu_getreg(int regnum, size_t *regsz) 51 { 52 53 *regsz = gdb_cpu_regsz(regnum); 54 55 if (kdb_thread == curthread) { 56 if (regnum == 0 || (regnum >= 2 && regnum <= 31)) 57 return (kdb_frame->fixreg + regnum); 58 if (regnum == 64) 59 return (&kdb_frame->srr0); 60 if (regnum == 67) 61 return (&kdb_frame->lr); 62 } 63 64 if (regnum == 1) 65 return (&kdb_thrctx->pcb_sp); 66 if (regnum >= 14 && regnum <= 31) 67 return (kdb_thrctx->pcb_context + (regnum - 14)); 68 if (regnum == 64) 69 return (&kdb_thrctx->pcb_lr); 70 71 return (NULL); 72 } 73 74 void 75 gdb_cpu_setreg(int regnum, void *val) 76 { 77 78 switch (regnum) { 79 case GDB_REG_PC: 80 break; 81 } 82 } 83 84 int 85 gdb_cpu_signal(int vector, int dummy __unused) 86 { 87 #ifdef E500 88 if (vector == EXC_DEBUG || vector == EXC_PGM) 89 return (SIGTRAP); 90 #else 91 if (vector == EXC_TRC || vector == EXC_RUNMODETRC) 92 return (SIGTRAP); 93 #endif 94 95 if (vector <= 255) 96 return (vector); 97 else 98 return (SIGEMT); 99 } 100