134 lines
3.9 KiB
C
134 lines
3.9 KiB
C
/* $NetBSD: db_machdep.h,v 1.14 2007/01/06 16:14:44 christos Exp $ */
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/*
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* Copyright (c) 1996 Scott K Stevens
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*
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* Mach Operating System
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* Copyright (c) 1991,1990 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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#ifndef _ARM_DB_MACHDEP_H_
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#define _ARM_DB_MACHDEP_H_
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/*
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* Machine-dependent defines for new kernel debugger.
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*/
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#include <uvm/uvm_extern.h>
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#include <arm/armreg.h>
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#include <machine/frame.h>
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#include <machine/trap.h>
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/* end of mangling */
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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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typedef trapframe_t 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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#ifdef __PROG26
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#define PC_REGS(regs) ((regs)->tf_r15 & R15_PC)
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#define PC_ADVANCE(regs) ((regs)->tf_r15 += BKPT_SIZE)
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#else
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#define PC_REGS(regs) ((regs)->tf_pc)
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#define PC_ADVANCE(r) ((r)->tf_r15 += BKPT_SIZE)
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#endif
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#define BKPT_ADDR(addr) (addr) /* breakpoint address */
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#if defined(DDB)
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#define BKPT_INST (KERNEL_BREAKPOINT) /* breakpoint instruction */
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#else
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/* breakpoint instruction if we use KGDB, this is used in db_set_temp_breakpoint() */
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#define BKPT_INST (GDB5_BREAKPOINT)
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#endif
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#define BKPT_SIZE (INSN_SIZE) /* size of breakpoint inst */
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#define BKPT_SET(inst, addr) (BKPT_INST)
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/*#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_pc -= BKPT_SIZE)*/
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#define T_FAULT (0)
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#define T_BREAKPOINT (1)
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#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT)
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#define IS_WATCHPOINT_TRAP(type, code) (0)
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#define inst_trap_return(ins) (0)
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/* ldmxx reg, {..., pc}
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01800000 stack mode
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000f0000 register
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0000ffff register list */
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/* mov pc, reg
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0000000f register */
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#define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \
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((ins) & 0x0ff0fff0) == 0x01a0f000)
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/* bl ...
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00ffffff offset>>2 */
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#define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000)
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/* b ...
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00ffffff offset>>2 */
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/* ldr pc, [pc, reg, lsl #2]
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0000000f register */
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#define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \
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((ins) & 0x0fdffff0) == 0x079ff100 || \
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((ins) & 0x0ff0f000) == 0x0590f000)
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#define inst_load(ins) (0)
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#define inst_store(ins) (0)
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#define inst_unconditional_flow_transfer(ins) \
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((((ins) & INSN_COND_MASK) == INSN_COND_AL) && \
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(inst_branch(ins) || inst_call(ins) || inst_return(ins)))
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#define getreg_val (0)
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#define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE))
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#define DB_MACHINE_COMMANDS
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#define SOFTWARE_SSTEP
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u_int branch_taken __P((u_int insn, u_int pc, db_regs_t *db_regs));
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int kdb_trap __P((int, db_regs_t *));
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void db_machine_init __P((void));
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int db_validate_address(vm_offset_t addr);
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#ifdef __ELF__
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#define DB_ELF_SYMBOLS
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#define DB_ELFSIZE 32
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#else
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#define DB_AOUT_SYMBOLS
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#endif
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/*
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* kgdb
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*/
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typedef register_t kgdb_reg_t;
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#define KGDB_NUMREGS (16 + 8*3 + 2) /* r0..r15, f0..f7, fps, cpsr
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* fp-registers are 12 bytes wide */
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#define KGDB_REGNUM_R0 0
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#define KGDB_REGNUM_SPSR 16 + 8*3 + 1
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#define KGDB_BUFLEN 1024
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#endif /* _ARM_DB_MACHDEP_H_ */
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