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/*-
* Mach Operating System
* Copyright (c) 1991,1990 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.
*
* from: FreeBSD: src/sys/i386/include/db_machdep.h,v 1.16 1999/10/04
* $FreeBSD$
*/
#ifndef _MACHINE_DB_MACHDEP_H_
#define _MACHINE_DB_MACHDEP_H_
#include <machine/frame.h>
#include <machine/trap.h>
#include <machine/armreg.h>
#define T_BREAKPOINT (1)
typedef vm_offset_t db_addr_t;
typedef int db_expr_t;
#define PC_REGS() ((db_addr_t)kdb_thrctx->un_32.pcb32_pc)
#define BKPT_INST (KERNEL_BREAKPOINT)
#define BKPT_SIZE (INSN_SIZE)
#define BKPT_SET(inst) (BKPT_INST)
#define BKPT_SKIP do { \
kdb_frame->tf_pc += BKPT_SIZE; \
} while (0)
#define SOFTWARE_SSTEP 1
#define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT)
#define IS_WATCHPOINT_TRAP(type, code) (0)
#define inst_trap_return(ins) (0)
/* ldmxx reg, {..., pc}
01800000 stack mode
000f0000 register
0000ffff register list */
/* mov pc, reg
0000000f register */
#define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \
((ins) & 0x0ff0fff0) == 0x01a0f000 || \
((ins) & 0x0ffffff0) == 0x012fff10) /* bx */
/* bl ...
00ffffff offset>>2 */
#define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000)
/* b ...
00ffffff offset>>2 */
/* ldr pc, [pc, reg, lsl #2]
0000000f register */
#define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \
((ins) & 0x0fdffff0) == 0x079ff100 || \
((ins) & 0x0cf0f000) == 0x0490f000 || \
((ins) & 0x0ffffff0) == 0x012fff30 || /* blx */ \
((ins) & 0x0de0f000) == 0x0080f000)
#define inst_load(ins) (0)
#define inst_store(ins) (0)
#define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE))
#define DB_SMALL_VALUE_MAX (0x7fffffff)
#define DB_SMALL_VALUE_MIN (-0x40001)
#define DB_ELFSIZE 32
int db_validate_address(vm_offset_t);
u_int branch_taken (u_int insn, u_int pc);
#ifdef __ARMEB__
#define BYTE_MSF (1)
#endif
#endif /* !_MACHINE_DB_MACHDEP_H_ */
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