/* $OpenBSD: db_machdep.h,v 1.2 1997/03/21 00:48:48 niklas Exp $ */ /* $NetBSD: db_machdep.h,v 1.26.8.1 2020/02/25 20:08:38 martin Exp $ */ /* * Mach Operating System * Copyright (c) 1992 Carnegie Mellon University * All Rights Reserved. * * 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 Mellon * the rights to redistribute these changes. */ /* * Machine-dependent defines for new kernel debugger. */ #ifndef _PPC_DB_MACHDEP_H_ #define _PPC_DB_MACHDEP_H_ #include #include #include #ifdef _KERNEL #include "opt_ppcarch.h" #endif #define DB_ELF_SYMBOLS typedef vaddr_t db_addr_t; /* address - unsigned */ #define DDB_EXPR_FMT "l" /* expression is long */ typedef long db_expr_t; /* expression - signed */ struct powerpc_saved_state { u_int32_t r[32]; /* data registers */ u_int32_t iar; u_int32_t msr; u_int32_t lr; u_int32_t ctr; u_int32_t cr; u_int32_t xer; u_int32_t mq; u_int32_t dear; u_int32_t esr; u_int32_t pid; }; typedef struct powerpc_saved_state db_regs_t; extern db_regs_t ddb_regs; /* register state */ #define DDB_REGS (&ddb_regs) #define PC_REGS(regs) (*(db_addr_t *)&(regs)->iar) #define BKPT_ADDR(addr) (addr) /* breakpoint address */ #define BKPT_ASM "trap" /* should match BKPT_INST */ #define BKPT_INST 0x7fe00008 /* breakpoint instruction */ #define BKPT_SIZE (4) /* size of breakpoint inst */ #define BKPT_SET(inst, addr) (BKPT_INST) #ifndef PPC_IBM4XX #define SR_SINGLESTEP 0x400 #define db_clear_single_step(regs) ((regs)->msr &= ~SR_SINGLESTEP) #define db_set_single_step(regs) ((regs)->msr |= SR_SINGLESTEP) #else #define SOFTWARE_SSTEP #endif #define T_BREAKPOINT 0xffff #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) #define T_WATCHPOINT 0xeeee #ifdef T_WATCHPOINT #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) #else #define IS_WATCHPOINT_TRAP(type, code) 0 #endif #define M_RTS 0xfc0007ff #define I_RTS 0x4c000020 #define I_BLRL 0x4c000021 #define M_BC 0xfc000001 #define I_BC 0x40000000 #define I_BCL 0x40000001 #define M_B 0xfc000001 #define I_B 0x48000000 #define I_BL 0x48000001 #define M_BCTR 0xfc0007ff #define I_BCTR 0x4c000420 #define I_BCTRL 0x4c000421 #define M_RFI 0xfc0007fe #define I_RFI 0x4c000064 #define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI) #define inst_return(ins) (((ins)&M_RTS) == I_RTS) #define inst_call(ins) (((ins)&M_BC ) == I_BCL || \ ((ins)&M_B ) == I_BL || \ ((ins)&M_BCTR) == I_BCTRL || \ ((ins)&M_RTS ) == I_BLRL ) #define inst_branch(ins) (((ins)&M_BC ) == I_BC || \ ((ins)&M_B ) == I_B || \ ((ins)&M_BCTR) == I_BCTR ) #define inst_unconditional_flow_transfer(ins) \ (((ins)&M_B ) == I_B || \ ((ins)&M_BCTR) == I_BCTR ) #define inst_load(ins) 0 #define inst_store(ins) 0 #if defined(PPC_IBM4XX) || defined(PPC_BOOKE) #define next_instr_address(v, b) ((db_addr_t) ((b) ? (v) : ((v) + 4))) extern db_addr_t branch_taken(int, db_addr_t, db_regs_t *); #endif /* * GDB's register array is: * 32 4-byte GPRs * 32 8-byte FPRs * 7 4-byte UISA special-purpose registers * 16 4-byte segment registers * 32 4-byte standard OEA special-purpose registers, * and up to 64 4-byte non-standard OES special-purpose registers. * GDB keeps some extra space, so the total size of the register array * they use is 880 bytes (gdb-5.0). * KGDB_NUMREGS 220 */ /* * GDB's register array of gdb-6.0 is defined in * usr/src/gnu/dist/gdb6/gdb/regformats/reg-ppc.dat * GDB's register array is: * 32 4-byte GPRs * 32 8-byte FPRs * 7 4-byte UISA special-purpose registers: pc, ps, cr, lr, ctr, xer, fpscr * index of pc in array: 32 + 2*32 = 96 * size 32 * 4 + 32 * 8 + 7 * 4 = 103 * 4 = 412 bytes * KGD_NUMREGS 103 */ typedef long kgdb_reg_t; #define KGDB_PPC_PC_REG 96 /* first UISA SP register */ #define KGDB_PPC_MSR_REG 97 #define KGDB_PPC_CR_REG 98 #define KGDB_PPC_LR_REG 99 #define KGDB_PPC_CTR_REG 100 #define KGDB_PPC_XER_REG 101 #define KGDB_PPC_FPSCR_REG 102 #define KGDB_NUMREGS 103 /* Treat all registers as 4-byte */ #define KGDB_BUFLEN (2*KGDB_NUMREGS*sizeof(kgdb_reg_t)+1) #ifdef _KERNEL void kdb_kintr(void *); int kdb_trap(int, void *); bool ddb_running_on_this_cpu_p(void); bool ddb_running_on_any_cpu_p(void); void db_resume_others(void); /* * We have machine-dependent commands. */ #define DB_MACHINE_COMMANDS #endif /* _KERNEL */ #endif /* _PPC_DB_MACHDEP_H_ */