124 lines
3 KiB
C
124 lines
3 KiB
C
/* GNU/Linux/SH specific low level interface, for the remote server for GDB.
|
|
Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2007,
|
|
2008, 2009, 2010 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"
|
|
|
|
/* Defined in auto-generated file reg-sh.c. */
|
|
void init_registers_sh (void);
|
|
|
|
#ifdef HAVE_SYS_REG_H
|
|
#include <sys/reg.h>
|
|
#endif
|
|
|
|
#include <asm/ptrace.h>
|
|
|
|
#define sh_num_regs 41
|
|
|
|
/* Currently, don't check/send MQ. */
|
|
static int sh_regmap[] = {
|
|
0, 4, 8, 12, 16, 20, 24, 28,
|
|
32, 36, 40, 44, 48, 52, 56, 60,
|
|
|
|
REG_PC*4, REG_PR*4, REG_GBR*4, -1,
|
|
REG_MACH*4, REG_MACL*4, REG_SR*4,
|
|
REG_FPUL*4, REG_FPSCR*4,
|
|
|
|
REG_FPREG0*4+0, REG_FPREG0*4+4, REG_FPREG0*4+8, REG_FPREG0*4+12,
|
|
REG_FPREG0*4+16, REG_FPREG0*4+20, REG_FPREG0*4+24, REG_FPREG0*4+28,
|
|
REG_FPREG0*4+32, REG_FPREG0*4+36, REG_FPREG0*4+40, REG_FPREG0*4+44,
|
|
REG_FPREG0*4+48, REG_FPREG0*4+52, REG_FPREG0*4+56, REG_FPREG0*4+60,
|
|
};
|
|
|
|
static int
|
|
sh_cannot_store_register (int regno)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
sh_cannot_fetch_register (int regno)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static CORE_ADDR
|
|
sh_get_pc ()
|
|
{
|
|
unsigned long pc;
|
|
collect_register_by_name ("pc", &pc);
|
|
return pc;
|
|
}
|
|
|
|
static void
|
|
sh_set_pc (CORE_ADDR pc)
|
|
{
|
|
unsigned long newpc = pc;
|
|
supply_register_by_name ("pc", &newpc);
|
|
}
|
|
|
|
/* Correct in either endianness, obviously. */
|
|
static const unsigned short sh_breakpoint = 0xc3c3;
|
|
#define sh_breakpoint_len 2
|
|
|
|
static int
|
|
sh_breakpoint_at (CORE_ADDR where)
|
|
{
|
|
unsigned short insn;
|
|
|
|
(*the_target->read_memory) (where, (unsigned char *) &insn, 2);
|
|
if (insn == sh_breakpoint)
|
|
return 1;
|
|
|
|
/* If necessary, recognize more trap instructions here. GDB only uses the
|
|
one. */
|
|
return 0;
|
|
}
|
|
|
|
/* Provide only a fill function for the general register set. ps_lgetregs
|
|
will use this for NPTL support. */
|
|
|
|
static void sh_fill_gregset (void *buf)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 23; i++)
|
|
if (sh_regmap[i] != -1)
|
|
collect_register (i, (char *) buf + sh_regmap[i]);
|
|
}
|
|
|
|
struct regset_info target_regsets[] = {
|
|
{ 0, 0, 0, GENERAL_REGS, sh_fill_gregset, NULL },
|
|
{ 0, 0, -1, -1, NULL, NULL }
|
|
};
|
|
|
|
struct linux_target_ops the_low_target = {
|
|
init_registers_sh,
|
|
sh_num_regs,
|
|
sh_regmap,
|
|
sh_cannot_fetch_register,
|
|
sh_cannot_store_register,
|
|
sh_get_pc,
|
|
sh_set_pc,
|
|
(const unsigned char *) &sh_breakpoint,
|
|
sh_breakpoint_len,
|
|
NULL,
|
|
0,
|
|
sh_breakpoint_at,
|
|
};
|