/* $NetBSD: db_machdep.h,v 1.23 2023/11/22 01:58:02 thorpej Exp $ */ /* * Copyright (c) 1995 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #ifndef _ALPHA_DB_MACHDEP_H_ #define _ALPHA_DB_MACHDEP_H_ /* * Machine-dependent defines for new kernel debugger. */ #include #include #include #include typedef vaddr_t db_addr_t; /* address - unsigned */ #define DDB_EXPR_FMT "l" /* expression is long */ typedef long db_expr_t; /* expression - signed */ typedef struct trapframe db_regs_t; extern db_regs_t *ddb_regp; /* pointer to current register state */ #define DDB_REGS (ddb_regp) #define PC_REGS(regs) ((regs)->tf_regs[FRAME_PC]) #define BKPT_ADDR(addr) (addr) /* breakpoint address */ #define BKPT_INST 0x00000080 /* breakpoint instruction */ #define BKPT_SIZE (4) /* size of breakpoint inst */ #define BKPT_SET(inst, addr) (BKPT_INST) #define FIXUP_PC_AFTER_BREAK(regs) \ ((regs)->tf_regs[FRAME_PC] -= BKPT_SIZE) #define SOFTWARE_SSTEP 1 /* no hardware support */ #define IS_BREAKPOINT_TRAP(type, code) ((type) == ALPHA_KENTRY_IF && \ (code) == ALPHA_IF_CODE_BPT) #define IS_WATCHPOINT_TRAP(type, code) 0 /* * Functions needed for software single-stepping. */ bool db_inst_trap_return(int inst); bool db_inst_return(int inst); bool db_inst_call(int inst); bool db_inst_branch(int inst); bool db_inst_load(int inst); bool db_inst_store(int inst); bool db_inst_unconditional_flow_transfer(int inst); db_addr_t db_branch_taken(int inst, db_addr_t pc, db_regs_t *regs); #define inst_trap_return(ins) db_inst_trap_return(ins) #define inst_return(ins) db_inst_return(ins) #define inst_call(ins) db_inst_call(ins) #define inst_branch(ins) db_inst_branch(ins) #define inst_load(ins) db_inst_load(ins) #define inst_store(ins) db_inst_store(ins) #define inst_unconditional_flow_transfer(ins) \ db_inst_unconditional_flow_transfer(ins) #define branch_taken(ins, pc, regs) \ db_branch_taken((ins), (pc), (regs)) /* No delay slots on Alpha. */ #define next_instr_address(v, b) ((db_addr_t) ((b) ? (v) : ((v) + 4))) u_long db_register_value(db_regs_t *, int); int ddb_trap(unsigned long, unsigned long, unsigned long, unsigned long, struct trapframe *); int alpha_debug(unsigned long, unsigned long, unsigned long, unsigned long, struct trapframe *); struct alpha_bus_space; void alpha_kgdb_init(const char **, struct alpha_bus_space *); /* * We define some of our own commands. */ #define DB_MACHINE_COMMANDS /* * We use Elf64 symbols in DDB. */ #define DB_ELF_SYMBOLS /* * Stuff for KGDB. */ typedef long kgdb_reg_t; #define KGDB_NUMREGS 66 /* from tm-alpha.h, NUM_REGS */ #define KGDB_REG_V0 0 #define KGDB_REG_T0 1 #define KGDB_REG_T1 2 #define KGDB_REG_T2 3 #define KGDB_REG_T3 4 #define KGDB_REG_T4 5 #define KGDB_REG_T5 6 #define KGDB_REG_T6 7 #define KGDB_REG_T7 8 #define KGDB_REG_S0 9 #define KGDB_REG_S1 10 #define KGDB_REG_S2 11 #define KGDB_REG_S3 12 #define KGDB_REG_S4 13 #define KGDB_REG_S5 14 #define KGDB_REG_S6 15 /* FP */ #define KGDB_REG_A0 16 #define KGDB_REG_A1 17 #define KGDB_REG_A2 18 #define KGDB_REG_A3 19 #define KGDB_REG_A4 20 #define KGDB_REG_A5 21 #define KGDB_REG_T8 22 #define KGDB_REG_T9 23 #define KGDB_REG_T10 24 #define KGDB_REG_T11 25 #define KGDB_REG_RA 26 #define KGDB_REG_T12 27 #define KGDB_REG_AT 28 #define KGDB_REG_GP 29 #define KGDB_REG_SP 30 #define KGDB_REG_ZERO 31 #define KGDB_REG_F0 32 #define KGDB_REG_F1 33 #define KGDB_REG_F2 34 #define KGDB_REG_F3 35 #define KGDB_REG_F4 36 #define KGDB_REG_F5 37 #define KGDB_REG_F6 38 #define KGDB_REG_F7 39 #define KGDB_REG_F8 40 #define KGDB_REG_F9 41 #define KGDB_REG_F10 42 #define KGDB_REG_F11 43 #define KGDB_REG_F12 44 #define KGDB_REG_F13 45 #define KGDB_REG_F14 46 #define KGDB_REG_F15 47 #define KGDB_REG_F16 48 #define KGDB_REG_F17 49 #define KGDB_REG_F18 50 #define KGDB_REG_F19 51 #define KGDB_REG_F20 52 #define KGDB_REG_F21 53 #define KGDB_REG_F22 54 #define KGDB_REG_F23 55 #define KGDB_REG_F24 56 #define KGDB_REG_F25 57 #define KGDB_REG_F26 58 #define KGDB_REG_F27 59 #define KGDB_REG_F28 60 #define KGDB_REG_F29 61 #define KGDB_REG_F30 62 #define KGDB_REG_F31 63 #define KGDB_REG_PC 64 #define KGDB_REG_VFP 65 /* Too much? Must be large enough for register transfer. */ #define KGDB_BUFLEN 1024 /* * Private alpha ddb internals. */ #define SYM_XentArith 0 #define SYM_XentIF 1 #define SYM_XentInt 2 #define SYM_XentMM 3 #define SYM_XentSys 4 #define SYM_XentUna 5 #define SYM_XentRestart 6 #define SYM_exception_return 7 #define SYM_alpha_kthread_backstop 8 #ifdef _KERNEL #define SYM___eol (SYM_alpha_kthread_backstop + 1) #else #define SYM_dumppcb 9 #define SYM___eol (SYM_dumppcb + 1) #endif /* _KERNEL */ #ifdef _KERNEL struct db_alpha_nlist { vaddr_t n_value; }; typedef struct db_alpha_nlist db_alpha_nlist; #define DB_ALPHA_SYM(i, x) [(i)] = { .n_value = (vaddr_t)&(x) } #define DB_ALPHA_SYM_EOL [SYM___eol] = { .n_value = 0 } #else #include typedef struct nlist db_alpha_nlist; #define DB_ALPHA_SYM(i, x) [(i)] = { .n_name = __STRING(x) } #define DB_ALPHA_SYM_EOL [SYM___eol] = { .n_name = NULL } #endif /* _KERNEL */ bool db_alpha_sym_is_trap(db_addr_t); bool db_alpha_sym_is_backstop(db_addr_t); bool db_alpha_sym_is_syscall(db_addr_t); const char * db_alpha_trapsym_description(db_addr_t); unsigned long db_alpha_read_saved_reg(unsigned long *); unsigned long db_alpha_tf_reg(struct trapframe *, unsigned int); /* * Extra ddb options. */ #define __HAVE_DB_STACK_TRACE_PRINT_RA void db_stack_trace_print_ra(db_expr_t, bool, db_expr_t, bool, db_expr_t, const char *, void (*)(const char *, ...)); #endif /* _ALPHA_DB_MACHDEP_H_ */