[deliverable/binutils-gdb.git] / gdb / gdbserver / linux-m32r-low.c

/* GNU/Linux/m32r specific low level interface, for the remote server for GDB.
   Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
   Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include "server.h"
#include "linux-low.h"

#ifdef HAVE_SYS_REG_H
#include <sys/reg.h>
#endif

/* Defined in auto-generated file reg-m32r.c.  */
void init_registers_m32r (void);

#define m32r_num_regs 25

static int m32r_regmap[] = {
#ifdef PT_R0
  PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7,
  PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_FP, PT_LR, PT_SPU,
  PT_PSW, PT_CBR, PT_SPI, PT_SPU, PT_BPC, PT_PC, PT_ACCL, PT_ACCH, PT_EVB
#else
  4 * 4, 4 * 5, 4 * 6, 4 * 7, 4 * 0, 4 * 1, 4 * 2, 4 * 8,
  4 * 9, 4 * 10, 4 * 11, 4 * 12, 4 * 13, 4 * 24, 4 * 25, 4 * 23,
  4 * 19, 4 * 31, 4 * 26, 4 * 23, 4 * 20, 4 * 30, 4 * 16, 4 * 15, 4 * 32
#endif
};

static int
m32r_cannot_store_register (int regno)
{
  return (regno >= m32r_num_regs);
}

static int
m32r_cannot_fetch_register (int regno)
{
  return (regno >= m32r_num_regs);
}

static CORE_ADDR
m32r_get_pc (struct regcache *regcache)
{
  unsigned long pc;
  collect_register_by_name (regcache, "pc", &pc);
  if (debug_threads)
    fprintf (stderr, "stop pc is %08lx\n", pc);
  return pc;
}

static void
m32r_set_pc (struct regcache *regcache, CORE_ADDR pc)
{
  unsigned long newpc = pc;
  supply_register_by_name (regcache, "pc", &newpc);
}

static const unsigned short m32r_breakpoint = 0x10f1;
#define m32r_breakpoint_len 2

static int
m32r_breakpoint_at (CORE_ADDR where)
{
  unsigned short insn;

  (*the_target->read_memory) (where, (unsigned char *) &insn,
			      m32r_breakpoint_len);
  if (insn == m32r_breakpoint)
    return 1;

  /* If necessary, recognize more trap instructions here.  GDB only uses the
     one.  */
  return 0;
}

struct linux_target_ops the_low_target = {
  init_registers_m32r,
  m32r_num_regs,
  m32r_regmap,
  m32r_cannot_fetch_register,
  m32r_cannot_store_register,
  m32r_get_pc,
  m32r_set_pc,
  (const unsigned char *) &m32r_breakpoint,
  m32r_breakpoint_len,
  NULL,
  0,
  m32r_breakpoint_at,
};
Commit	Line	Data
	1	/* GNU/Linux/m32r specific low level interface, for the remote server for GDB.
	2	Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
	3	Free Software Foundation, Inc.
	4
	5	This file is part of GDB.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 3 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	19
	20	#include "server.h"
	21	#include "linux-low.h"
	22
	23	#ifdef HAVE_SYS_REG_H
	24	#include <sys/reg.h>
	25	#endif
	26
	27	/* Defined in auto-generated file reg-m32r.c. */
	28	void init_registers_m32r (void);
	29
	30	#define m32r_num_regs 25
	31
	32	static int m32r_regmap[] = {
	33	#ifdef PT_R0
	34	PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7,
	35	PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_FP, PT_LR, PT_SPU,
	36	PT_PSW, PT_CBR, PT_SPI, PT_SPU, PT_BPC, PT_PC, PT_ACCL, PT_ACCH, PT_EVB
	37	#else
	38	4 * 4, 4 * 5, 4 * 6, 4 * 7, 4 * 0, 4 * 1, 4 * 2, 4 * 8,
	39	4 * 9, 4 * 10, 4 * 11, 4 * 12, 4 * 13, 4 * 24, 4 * 25, 4 * 23,
	40	4 * 19, 4 * 31, 4 * 26, 4 * 23, 4 * 20, 4 * 30, 4 * 16, 4 * 15, 4 * 32
	41	#endif
	42	};
	43
	44	static int
	45	m32r_cannot_store_register (int regno)
	46	{
	47	return (regno >= m32r_num_regs);
	48	}
	49
	50	static int
	51	m32r_cannot_fetch_register (int regno)
	52	{
	53	return (regno >= m32r_num_regs);
	54	}
	55
	56	static CORE_ADDR
	57	m32r_get_pc (struct regcache *regcache)
	58	{
	59	unsigned long pc;
	60	collect_register_by_name (regcache, "pc", &pc);
	61	if (debug_threads)
	62	fprintf (stderr, "stop pc is %08lx\n", pc);
	63	return pc;
	64	}
	65
	66	static void
	67	m32r_set_pc (struct regcache *regcache, CORE_ADDR pc)
	68	{
	69	unsigned long newpc = pc;
	70	supply_register_by_name (regcache, "pc", &newpc);
	71	}
	72
	73	static const unsigned short m32r_breakpoint = 0x10f1;
	74	#define m32r_breakpoint_len 2
	75
	76	static int
	77	m32r_breakpoint_at (CORE_ADDR where)
	78	{
	79	unsigned short insn;
	80
	81	(the_target->read_memory) (where, (unsigned char ) &insn,
	82	m32r_breakpoint_len);
	83	if (insn == m32r_breakpoint)
	84	return 1;
	85
	86	/* If necessary, recognize more trap instructions here. GDB only uses the
	87	one. */
	88	return 0;
	89	}
	90
	91	struct linux_target_ops the_low_target = {
	92	init_registers_m32r,
	93	m32r_num_regs,
	94	m32r_regmap,
	95	m32r_cannot_fetch_register,
	96	m32r_cannot_store_register,
	97	m32r_get_pc,
	98	m32r_set_pc,
	99	(const unsigned char *) &m32r_breakpoint,
	100	m32r_breakpoint_len,
	101	NULL,
	102	0,
	103	m32r_breakpoint_at,
	104	};