binutils-gdb/gdb/ppcnbsd-nat.c

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/* Native-dependent code for PowerPC's running NetBSD, for GDB.
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Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001
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 <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
#include <machine/frame.h>
#include "defs.h"
#include "inferior.h"
#include "gdbcore.h"
#include "ppc-tdep.h"
#include "regcache.h"
#define RF(dst, src) \
memcpy(&registers[REGISTER_BYTE(dst)], &src, sizeof(src))
#define RS(src, dst) \
memcpy(&dst, &registers[REGISTER_BYTE(src)], sizeof(dst))
void
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fetch_inferior_registers (int regno)
{
struct reg inferior_registers;
#ifdef PT_GETFPREGS
struct fpreg inferior_fp_registers;
#endif
int i;
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ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) & inferior_registers, 0);
for (i = 0; i < 32; i++)
RF (i, inferior_registers.fixreg[i]);
RF (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum, inferior_registers.lr);
RF (gdbarch_tdep (current_gdbarch)->ppc_cr_regnum, inferior_registers.cr);
RF (gdbarch_tdep (current_gdbarch)->ppc_xer_regnum, inferior_registers.xer);
RF (gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum, inferior_registers.ctr);
RF (PC_REGNUM, inferior_registers.pc);
#ifdef PT_GETFPREGS
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ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &inferior_fp_registers, 0);
for (i = 0; i < 32; i++)
RF (FP0_REGNUM + i, inferior_fp_registers.fpreg[i]);
#endif
registers_fetched ();
}
void
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store_inferior_registers (int regno)
{
struct reg inferior_registers;
#ifdef PT_SETFPREGS
struct fpreg inferior_fp_registers;
#endif
int i;
for (i = 0; i < 32; i++)
RS (i, inferior_registers.fixreg[i]);
RS (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum, inferior_registers.lr);
RS (gdbarch_tdep (current_gdbarch)->ppc_cr_regnum, inferior_registers.cr);
RS (gdbarch_tdep (current_gdbarch)->ppc_xer_regnum, inferior_registers.xer);
RS (gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum, inferior_registers.ctr);
RS (PC_REGNUM, inferior_registers.pc);
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ptrace (PT_SETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) & inferior_registers, 0);
#ifdef PT_SETFPREGS
for (i = 0; i < 32; i++)
RS (FP0_REGNUM + i, inferior_fp_registers.fpreg[i]);
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ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
#endif
}
struct md_core
{
struct reg intreg;
#ifdef PT_GETFPREGS
struct fpreg freg;
#endif
};
void
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fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
CORE_ADDR ignore)
{
struct md_core *core_reg = (struct md_core *) core_reg_sect;
int i;
/* Integer registers */
for (i = 0; i < 32; i++)
RF (i, core_reg->intreg.fixreg[i]);
RF (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum, core_reg->intreg.lr);
RF (gdbarch_tdep (current_gdbarch)->ppc_cr_regnum, core_reg->intreg.cr);
RF (gdbarch_tdep (current_gdbarch)->ppc_xer_regnum, core_reg->intreg.xer);
RF (gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum, core_reg->intreg.ctr);
RF (PC_REGNUM, core_reg->intreg.pc);
#ifdef PT_FPGETREGS
/* Floating point registers */
for (i = 0; i < 32; i++)
RF (FP0_REGNUM + i, core_reg->freg.fpreg[i]);
#endif
registers_fetched ();
}
/* Register that we are able to handle ppcnbsd core file formats.
FIXME: is this really bfd_target_unknown_flavour? */
static struct core_fns ppcnbsd_core_fns =
{
bfd_target_unknown_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_core_registers, /* core_read_registers */
NULL /* next */
};
void
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_initialize_ppcnbsd_nat (void)
{
add_core_fns (&ppcnbsd_core_fns);
}