db_trace.c revision 1.4
1 /* $NetBSD: db_trace.c,v 1.4 1999/01/06 04:11:31 nisimura Exp $ */ 2 3 /* 4 * Mach Operating System 5 * Copyright (c) 1993-1987 Carnegie Mellon University 6 * All Rights Reserved. 7 * 8 * Permission to use, copy, modify and distribute this software and its 9 * documentation is hereby granted, provided that both the copyright 10 * notice and this permission notice appear in all copies of the 11 * software, derivative works or modified versions, and any portions 12 * thereof, and that both notices appear in supporting documentation. 13 * 14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 16 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 17 * 18 * Carnegie Mellon requests users of this software to return to 19 * 20 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 21 * School of Computer Science 22 * Carnegie Mellon University 23 * Pittsburgh PA 15213-3890 24 * 25 * any improvements or extensions that they make and grant Carnegie Mellon 26 * the rights to redistribute these changes. 27 */ 28 29 #include <sys/types.h> 30 #include <vm/vm_param.h> /* XXX boolean_t */ 31 32 #include <machine/param.h> 33 #include <mips/db_machdep.h> 34 #include <ddb/db_interface.h> 35 #include <ddb/db_output.h> 36 #include <ddb/db_variables.h> 37 #include <ddb/db_sym.h> 38 39 extern int __start __P((void)); /* lowest kernel code address */ 40 extern vaddr_t getreg_val __P((db_expr_t regno)); 41 42 #define REG_ARG(i) (4+i) 43 #define SAVES_RA(x) isa_spill((x),31) 44 45 #define KERN_SAVE_REG_IDX(vp) ( \ 46 ((vp)->valuep >= (int *)(&((struct mips_saved_state *)0)->s0) && \ 47 (vp)->valuep <= (int *)(&((struct mips_saved_state *)0)->s7))? \ 48 vp->valuep - (int *)(&((struct mips_saved_state *)0)->s0): \ 49 ((vp)->valuep >= (int *)(&((struct mips_saved_state *)0)->sp) && \ 50 (vp)->valuep <= (int *)(&((struct mips_saved_state *)0)->ra))? \ 51 ((vp)->valuep-(int *)(&((struct mips_saved_state *)0)->sp)) + \ 52 ((int *)(&((struct mips_kernel_state *)0)->sp) - (int *)0): \ 53 -1) 54 55 extern db_sym_t localsym __P((db_sym_t sym, boolean_t isreg, int *lex_level)); 56 57 /* 58 * Machine register set. 59 */ 60 struct mips_saved_state *db_cur_exc_frame = 0; 61 62 /* 63 * forward declarations 64 */ 65 int print_exception_frame __P((register struct mips_saved_state *fp, 66 unsigned epc)); 67 68 /*XXX*/ 69 extern void stacktrace_subr __P((int a0, int a1, int a2, int a3, 70 u_int pc, u_int sp, u_int fp, u_int ra, 71 void (*)(const char*, ...))); 72 73 /* 74 * Stack trace helper. 75 */ 76 void db_mips_stack_trace __P((int count, vaddr_t stackp, 77 vaddr_t the_pc, vaddr_t the_ra, int flags, vaddr_t kstackp)); 78 79 80 #define DB_SETF_REGS FCN_NULL 81 #define DBREGS_REG() 82 83 struct db_variable db_regs[] = { 84 { "at", (long *)&ddb_regs.f_regs[AST], DB_SETF_REGS }, 85 { "v0", (long *)&ddb_regs.f_regs[V0], DB_SETF_REGS }, 86 { "v1", (long *)&ddb_regs.f_regs[V1], DB_SETF_REGS }, 87 { "a0", (long *)&ddb_regs.f_regs[A0], DB_SETF_REGS }, 88 { "a1", (long *)&ddb_regs.f_regs[A1], DB_SETF_REGS }, 89 { "a2", (long *)&ddb_regs.f_regs[A2], DB_SETF_REGS }, 90 { "a3", (long *)&ddb_regs.f_regs[A3], DB_SETF_REGS }, 91 { "t0", (long *)&ddb_regs.f_regs[T0], DB_SETF_REGS }, 92 { "t1", (long *)&ddb_regs.f_regs[T1], DB_SETF_REGS }, 93 { "t2", (long *)&ddb_regs.f_regs[T2], DB_SETF_REGS }, 94 { "t3", (long *)&ddb_regs.f_regs[T3], DB_SETF_REGS }, 95 { "t4", (long *)&ddb_regs.f_regs[T4], DB_SETF_REGS }, 96 { "t5", (long *)&ddb_regs.f_regs[T5], DB_SETF_REGS }, 97 { "t6", (long *)&ddb_regs.f_regs[T6], DB_SETF_REGS }, 98 { "t7", (long *)&ddb_regs.f_regs[T7], DB_SETF_REGS }, 99 { "s0", (long *)&ddb_regs.f_regs[S0], DB_SETF_REGS }, 100 { "s1", (long *)&ddb_regs.f_regs[S1], DB_SETF_REGS }, 101 { "s2", (long *)&ddb_regs.f_regs[S2], DB_SETF_REGS }, 102 { "s3", (long *)&ddb_regs.f_regs[S3], DB_SETF_REGS }, 103 { "s4", (long *)&ddb_regs.f_regs[S4], DB_SETF_REGS }, 104 { "s5", (long *)&ddb_regs.f_regs[S5], DB_SETF_REGS }, 105 { "s6", (long *)&ddb_regs.f_regs[S6], DB_SETF_REGS }, 106 { "s7", (long *)&ddb_regs.f_regs[S7], DB_SETF_REGS }, 107 { "t8", (long *)&ddb_regs.f_regs[T8], DB_SETF_REGS }, 108 { "t9", (long *)&ddb_regs.f_regs[T9], DB_SETF_REGS }, 109 { "k0", (long *)&ddb_regs.f_regs[K0], DB_SETF_REGS }, 110 { "k1", (long *)&ddb_regs.f_regs[K1], DB_SETF_REGS }, 111 { "gp", (long *)&ddb_regs.f_regs[GP], DB_SETF_REGS }, 112 { "sp", (long *)&ddb_regs.f_regs[SP], DB_SETF_REGS }, 113 { "fp", (long *)&ddb_regs.f_regs[S8], DB_SETF_REGS }, /* frame ptr */ 114 { "ra", (long *)&ddb_regs.f_regs[RA], DB_SETF_REGS }, 115 { "sr", (long *)&ddb_regs.f_regs[SR], DB_SETF_REGS }, 116 { "mdlo",(long *)&ddb_regs.f_regs[MULLO], DB_SETF_REGS }, 117 { "mdhi",(long *)&ddb_regs.f_regs[MULHI], DB_SETF_REGS }, 118 { "bad", (long *)&ddb_regs.f_regs[BADVADDR], DB_SETF_REGS }, 119 { "cs", (long *)&ddb_regs.f_regs[CAUSE], DB_SETF_REGS }, 120 { "pc", (long *)&ddb_regs.f_regs[PC], DB_SETF_REGS }, 121 }; 122 struct db_variable *db_eregs = db_regs + sizeof(db_regs)/sizeof(db_regs[0]); 123 124 125 126 void 127 db_stack_trace_cmd(addr, have_addr, count, modif) 128 db_expr_t addr; 129 boolean_t have_addr; 130 db_expr_t count; 131 char *modif; 132 { 133 stacktrace_subr(ddb_regs.f_regs[A0], ddb_regs.f_regs[A1], 134 ddb_regs.f_regs[A2], ddb_regs.f_regs[A3], 135 ddb_regs.f_regs[PC], 136 ddb_regs.f_regs[SP], 137 ddb_regs.f_regs[S8], /* non-virtual fame pointer */ 138 ddb_regs.f_regs[RA], 139 db_printf); 140 } 141 142 143 void 144 db_mips_stack_trace(count, stackp, the_pc, the_ra, flags, kstackp) 145 int count; 146 vaddr_t stackp, the_pc, the_ra; 147 int flags; 148 vaddr_t kstackp; 149 { 150 return; 151 } 152 153
Indexes created Mon Sep 22 13:09:51 GMT 2025