163 lines
4.6 KiB
C
163 lines
4.6 KiB
C
/* $OpenBSD: db_machdep.h,v 1.2 1997/03/21 00:48:48 niklas Exp $ */
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/* $NetBSD: db_machdep.h,v 1.17 2003/04/29 17:06:06 scw Exp $ */
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/*
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* Mach Operating System
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* Copyright (c) 1992 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*/
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/*
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* Machine-dependent defines for new kernel debugger.
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*/
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#ifndef _PPC_DB_MACHDEP_H_
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#define _PPC_DB_MACHDEP_H_
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#include <uvm/uvm_prot.h>
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#include <uvm/uvm_param.h>
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#include <machine/trap.h>
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#ifdef _KERNEL
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#include "opt_ppcarch.h"
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#endif
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#define DB_ELF_SYMBOLS
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#define DB_ELFSIZE 32
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typedef vaddr_t db_addr_t; /* address - unsigned */
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typedef long db_expr_t; /* expression - signed */
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struct powerpc_saved_state {
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u_int32_t r[32]; /* data registers */
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u_int32_t iar;
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u_int32_t msr;
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u_int32_t lr;
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u_int32_t ctr;
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u_int32_t cr;
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u_int32_t xer;
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u_int32_t mq;
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u_int32_t dear;
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u_int32_t esr;
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u_int32_t pid;
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};
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typedef struct powerpc_saved_state db_regs_t;
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extern db_regs_t ddb_regs; /* register state */
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#define DDB_REGS (&ddb_regs)
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#define PC_REGS(regs) (*(db_addr_t *)&(regs)->iar)
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#define BKPT_ADDR(addr) (addr) /* breakpoint address */
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#define BKPT_ASM "trap" /* should match BKPT_INST */
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#define BKPT_INST 0x7fe00008 /* breakpoint instruction */
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#define BKPT_SIZE (4) /* size of breakpoint inst */
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#define BKPT_SET(inst) (BKPT_INST)
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#ifndef PPC_IBM4XX
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#define SR_SINGLESTEP 0x400
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#define db_clear_single_step(regs) ((regs)->msr &= ~SR_SINGLESTEP)
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#define db_set_single_step(regs) ((regs)->msr |= SR_SINGLESTEP)
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#else
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#define SOFTWARE_SSTEP
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#endif
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#define T_BREAKPOINT 0xffff
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#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT)
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#define T_WATCHPOINT 0xeeee
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#ifdef T_WATCHPOINT
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#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT)
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#else
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#define IS_WATCHPOINT_TRAP(type, code) 0
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#endif
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#define M_RTS 0xfc0007ff
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#define I_RTS 0x4c000020
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#define I_BLRL 0x4c000021
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#define M_BC 0xfc000001
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#define I_BC 0x40000000
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#define I_BCL 0x40000001
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#define M_B 0xfc000001
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#define I_B 0x48000000
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#define I_BL 0x48000001
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#define M_BCTR 0xfc0007fe
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#define I_BCTR 0x4c000420
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#define I_BCTRL 0x4c000421
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#define M_RFI 0xfc0007fe
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#define I_RFI 0x4c000064
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#define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI)
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#define inst_return(ins) (((ins)&M_RTS) == I_RTS)
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#define inst_call(ins) (((ins)&M_BC ) == I_BCL || \
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((ins)&M_B ) == I_BL || \
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((ins)&M_BCTR) == I_BCTRL || \
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((ins)&M_RTS ) == I_BLRL )
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#define inst_branch(ins) (((ins)&M_BC ) == I_BC || \
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((ins)&M_B ) == I_B || \
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((ins)&M_BCTR) == I_BCTR )
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#define inst_unconditional_flow_transfer(ins) \
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(((ins)&M_B ) == I_B || \
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((ins)&M_BCTR) == I_BCTR )
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#define inst_load(ins) 0
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#define inst_store(ins) 0
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#ifdef PPC_IBM4XX
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#define next_instr_address(v, b) ((db_addr_t) ((b) ? (v) : ((v) + 4)))
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extern db_addr_t branch_taken(int, db_addr_t, db_regs_t *);
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#endif
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/*
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* GDB's register array is:
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* 32 4-byte GPRs
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* 32 8-byte FPRs
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* 7 4-byte UISA special-purpose registers
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* 16 4-byte segment registers
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* 32 4-byte standard OEA special-purpose registers,
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* and up to 64 4-byte non-standard OES special-purpose registers.
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* GDB keeps some extra space, so the total size of the register array
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* they use is 880 bytes (gdb-5.0).
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*/
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typedef long kgdb_reg_t;
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#define KGDB_NUMREGS 220 /* Treat all registers as 4-byte */
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#define KGDB_BUFLEN (2*KGDB_NUMREGS*sizeof(kgdb_reg_t)+1)
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#define KGDB_PPC_PC_REG 96 /* first UISA SP register */
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#define KGDB_PPC_MSR_REG 97
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#define KGDB_PPC_CR_REG 98
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#define KGDB_PPC_LR_REG 99
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#define KGDB_PPC_CTR_REG 100
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#define KGDB_PPC_XER_REG 101
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#define KGDB_PPC_MQ_REG 102
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#ifdef _KERNEL
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void kdb_kintr __P((void *));
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int kdb_trap __P((int, void *));
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#ifdef PPC_IBM4XX
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/*
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* We have machine-dependent commands.
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*/
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#define DB_MACHINE_COMMANDS
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#endif
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#endif /* _KERNEL */
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#endif /* _PPC_DB_MACHDEP_H_ */
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