1 /* $NetBSD: db_machdep.h,v 1.36 2020/03/10 15:54:52 christos Exp $ */ 2 3 /* 4 * Mach Operating System 5 * Copyright (c) 1991,1990 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@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 #ifndef _SPARC64_DB_MACHDEP_H_ 30 #define _SPARC64_DB_MACHDEP_H_ 31 32 /* 33 * Machine-dependent defines for new kernel debugger. 34 */ 35 36 #include <sys/types.h> 37 38 #include <uvm/uvm_extern.h> 39 40 #include <machine/frame.h> 41 #include <machine/pcb.h> 42 #include <machine/psl.h> 43 #include <machine/trap.h> 44 #include <machine/reg.h> 45 46 47 /* use 64-bit types explicitly for 32-bit kernels */ 48 typedef vaddr_t db_addr_t; /* address - unsigned */ 49 #ifdef __arch64__ 50 #define DDB_EXPR_FMT "l" /* expression is int64_t (long) */ 51 #else 52 #define DDB_EXPR_FMT "ll" /* expression is int64_t (long long) */ 53 #endif 54 typedef int64_t db_expr_t; /* expression - signed */ 55 56 struct trapstate { 57 int64_t tstate; 58 int64_t tpc; 59 int64_t tnpc; 60 int64_t tt; 61 }; 62 63 typedef struct { 64 struct trapframe64 db_tf; 65 struct frame64 db_fr; 66 struct trapstate db_ts[5]; 67 int db_tl; 68 struct fpstate64 db_fpstate __aligned(SPARC64_BLOCK_SIZE); 69 } db_regs_t; 70 71 /* Current CPU register state */ 72 #ifdef _KERNEL 73 #define DDB_REGS ((db_regs_t*)__UNVOLATILE(curcpu()->ci_ddb_regs)) 74 #define DDB_TF (&DDB_REGS->db_tf) 75 #define DDB_FP (&DDB_REGS->db_fpstate) 76 #endif 77 78 /* DDB commands not in db_interface.c */ 79 void db_dump_ts(db_expr_t, bool, db_expr_t, const char *); 80 void db_dump_trap(db_expr_t, bool, db_expr_t, const char *); 81 void db_dump_fpstate(db_expr_t, bool, db_expr_t, const char *); 82 void db_dump_window(db_expr_t, bool, db_expr_t, const char *); 83 void db_dump_stack(db_expr_t, bool, db_expr_t, const char *); 84 85 #define PC_REGS(regs) ((regs)->db_tf.tf_pc) 86 #define PC_ADVANCE(regs) do { \ 87 vaddr_t n = (regs)->db_tf.tf_npc; \ 88 (regs)->db_tf.tf_pc = n; \ 89 (regs)->db_tf.tf_npc = n + 4; \ 90 } while(0) 91 92 #define BKPT_ADDR(addr) (addr) /* breakpoint address */ 93 #define BKPT_INST 0x91d02001 /* breakpoint instruction */ 94 #define BKPT_SIZE (4) /* size of breakpoint inst */ 95 #define BKPT_SET(inst, addr) (BKPT_INST) 96 97 #define IS_BREAKPOINT_TRAP(type, code) \ 98 ((type) == T_BREAKPOINT || (type) == T_KGDB_EXEC) 99 #define IS_WATCHPOINT_TRAP(type, code) \ 100 ((type) ==T_PA_WATCHPT || (type) == T_VA_WATCHPT) 101 102 /* 103 * Sparc cpus have no hardware single-step. 104 */ 105 #define SOFTWARE_SSTEP 106 107 bool db_inst_trap_return(int inst); 108 bool db_inst_return(int inst); 109 bool db_inst_call(int inst); 110 bool db_inst_branch(int inst); 111 int db_inst_load(int inst); 112 int db_inst_store(int inst); 113 bool db_inst_unconditional_flow_transfer(int inst); 114 db_addr_t db_branch_taken(int inst, db_addr_t pc, db_regs_t *regs); 115 116 #define inst_trap_return(ins) db_inst_trap_return(ins) 117 #define inst_return(ins) db_inst_return(ins) 118 #define inst_call(ins) db_inst_call(ins) 119 #define inst_branch(ins) db_inst_branch(ins) 120 #define inst_load(ins) db_inst_load(ins) 121 #define inst_store(ins) db_inst_store(ins) 122 #define inst_unconditional_flow_transfer(ins) \ 123 db_inst_unconditional_flow_transfer(ins) 124 #define branch_taken(ins, pc, regs) \ 125 db_branch_taken((ins), (pc), (regs)) 126 127 /* see note in db_interface.c about reversed breakpoint addrs */ 128 #define next_instr_address(pc, bd) \ 129 ((bd) ? (pc) : DDB_REGS->db_tf.tf_npc) 130 131 #define DB_MACHINE_COMMANDS 132 133 int kdb_trap(int, struct trapframe64 *); 134 135 /* 136 * We use elf symbols in DDB. 137 */ 138 #define DB_ELF_SYMBOLS 139 140 /* 141 * KGDB definitions 142 */ 143 typedef u_long kgdb_reg_t; 144 #define KGDB_NUMREGS 125 145 #define KGDB_BUFLEN 2048 146 147 #endif /* _SPARC64_DB_MACHDEP_H_ */ 148