da925af9ad
box'. Use new GNU_ARCH remapper.
182 lines
5.0 KiB
C
182 lines
5.0 KiB
C
/* Native-dependent code for BSD Unix running on i386's, for GDB.
|
|
Copyright 1988, 1989, 1991, 1992, 1994, 1996 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 2 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, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|
|
|
#include "defs.h"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/ptrace.h>
|
|
#include <sys/user.h>
|
|
#include <machine/reg.h>
|
|
#include "inferior.h"
|
|
#include "gdbcore.h"
|
|
#include "target.h"
|
|
|
|
void
|
|
fetch_inferior_registers(regno)
|
|
int regno;
|
|
{
|
|
struct reg inferior_registers;
|
|
struct fpreg fp_registers;
|
|
int loop;
|
|
|
|
/* integer registers */
|
|
ptrace(PT_GETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &inferior_registers, 0);
|
|
memcpy(®isters[REGISTER_BYTE(0)], &inferior_registers, 4*16);
|
|
memcpy(®isters[REGISTER_BYTE(PS_REGNUM)], &inferior_registers.r_cpsr, 4);
|
|
|
|
/* floating point registers */
|
|
ptrace(PT_GETFPREGS, inferior_pid, (PTRACE_ARG3_TYPE) &fp_registers, 0);
|
|
memcpy(®isters[REGISTER_BYTE(F0_REGNUM)], &fp_registers.fpr[0], 12*8);
|
|
memcpy(®isters[REGISTER_BYTE(FPS_REGNUM)], &fp_registers.fpr_fpsr, 4);
|
|
|
|
registers_fetched ();
|
|
}
|
|
|
|
void
|
|
store_inferior_registers(regno)
|
|
int regno;
|
|
{
|
|
struct reg inferior_registers;
|
|
struct fpreg fp_registers;
|
|
|
|
/* integer registers */
|
|
memcpy(&inferior_registers.r_cpsr, ®isters[REGISTER_BYTE(PS_REGNUM)], 4);
|
|
memcpy(&inferior_registers, ®isters[REGISTER_BYTE(0)], 4*16);
|
|
ptrace(PT_SETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &inferior_registers, 0);
|
|
|
|
/* floating point registers */
|
|
memcpy(&fp_registers.fpr_fpsr, ®isters[REGISTER_BYTE(FPS_REGNUM)], 4);
|
|
memcpy(&fp_registers.fpr[0], ®isters[REGISTER_BYTE(F0_REGNUM)], 12*8);
|
|
ptrace(PT_SETFPREGS, inferior_pid, (PTRACE_ARG3_TYPE) &fp_registers, 0);
|
|
}
|
|
|
|
struct md_core {
|
|
struct reg intreg;
|
|
struct fpreg freg;
|
|
};
|
|
|
|
void
|
|
fetch_core_registers (core_reg_sect, core_reg_size, which, ignore)
|
|
char *core_reg_sect;
|
|
unsigned core_reg_size;
|
|
int which;
|
|
unsigned int ignore;
|
|
{
|
|
struct md_core *core_reg = (struct md_core *)core_reg_sect;
|
|
|
|
/* integer registers */
|
|
memcpy(®isters[REGISTER_BYTE(0)], &core_reg->intreg, 4*16);
|
|
memcpy(®isters[REGISTER_BYTE(PS_REGNUM)], &core_reg->intreg.r_cpsr, 4);
|
|
|
|
/* floating point registers */
|
|
memcpy(®isters[REGISTER_BYTE(F0_REGNUM)], &core_reg->freg.fpr[0], 12*8);
|
|
memcpy(®isters[REGISTER_BYTE(FPS_REGNUM)], &core_reg->freg.fpr_fpsr, 4);
|
|
}
|
|
|
|
int
|
|
kernel_u_size ()
|
|
{
|
|
return (sizeof (struct user));
|
|
}
|
|
|
|
/*
|
|
* NetBSD core stuf should be in netbsd-core.c
|
|
*/
|
|
|
|
static struct core_fns netbsd_core_fns =
|
|
{
|
|
bfd_target_unknown_flavour,
|
|
fetch_core_registers,
|
|
NULL
|
|
};
|
|
|
|
void
|
|
_initialize_core_netbsd ()
|
|
{
|
|
add_core_fns (&netbsd_core_fns);
|
|
}
|
|
|
|
/* Single stepping support */
|
|
|
|
static char breakpoint_shadow[BREAKPOINT_MAX];
|
|
static CORE_ADDR next_pc;
|
|
|
|
/* Non-zero if we just simulated a single-step ptrace call. This is
|
|
* needed because we cannot remove the breakpoints in the inferior
|
|
* process until after the `wait' in `wait_for_inferior'.
|
|
*/
|
|
|
|
int one_stepped;
|
|
|
|
/* single_step() is called just before we want to resume the inferior,
|
|
* if we want to single-step it but there is no hardware or kernel
|
|
* single-step support. We find all the possible targets of the
|
|
* coming instruction and breakpoint them.
|
|
*
|
|
* single_step is also called just after the inferior stops. If we had
|
|
* set up a simulated single-step, we undo our damage.
|
|
*/
|
|
|
|
void
|
|
single_step (ignore)
|
|
int ignore; /* signal, but we don't need it */
|
|
{
|
|
CORE_ADDR arm_pc;
|
|
|
|
if (!one_stepped)
|
|
{
|
|
/*
|
|
* Ok arm_pc is the address of the instruction will will run
|
|
* when we resume.
|
|
* Analyse the instruction at this address to work out the
|
|
* address of the next instruction.
|
|
*/
|
|
|
|
arm_pc = read_register(PC_REGNUM);
|
|
next_pc = arm_get_next_pc(arm_pc);
|
|
|
|
target_insert_breakpoint(next_pc, breakpoint_shadow);
|
|
/* printf_unfiltered("pc=%x: set break at %x\n", arm_pc, next_pc);*/
|
|
|
|
/* We are ready to let it go */
|
|
one_stepped = 1;
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
/* Remove breakpoints */
|
|
target_remove_breakpoint(next_pc, breakpoint_shadow);
|
|
|
|
one_stepped = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Temporary routine to warn folks this code is still experimental
|
|
*/
|
|
|
|
extern char *target_name;
|
|
void
|
|
_initialize_arm_bnat ()
|
|
{
|
|
printf_unfiltered("%s target configuration is high experimental\n", target_name);
|
|
printf_unfiltered("Report any problems to amb@physig.ph.kcl.ac.uk\n\n");
|
|
}
|