old-cross-binutils/gdb/m68kbsd-nat.c
Andrew Cagney e2e0b3e57f 2005-02-11 Andrew Cagney <cagney@gnu.org>
Mark up error_no_arg, query, perror_with_name, complaint, and
	internal_error.
	* breakpoint.c, cp-abi.c, cp-namespace.c, cp-support.c: Update.
	* cris-tdep.c, dbxread.c, dictionary.c, dsrec.c: Update.
	* dummy-frame.c, dve3900-rom.c, dwarf2-frame.c, dwarf2expr.c: Update.
	* dwarf2read.c, dwarfread.c, elfread.c, event-loop.c: Update.
	* exceptions.c, exec.c, f-lang.c, findvar.c, fork-child.c: Update.
	* frame-unwind.c, frame.c, frv-linux-tdep.c, frv-tdep.c: Update.
	* gdb_assert.h, gdbarch.c, gdbtypes.c, gnu-nat.c: Update.
	* go32-nat.c, hppa-tdep.c, hppabsd-nat.c, hpread.c: Update.
	* i386-linux-nat.c, i386-nat.c, i386-tdep.c, i386bsd-nat.c: Update.
	* i386fbsd-nat.c, inf-ptrace.c, inf-ttrace.c, infcall.c: Update.
	* infcmd.c, inflow.c, infptrace.c, infrun.c, inftarg.c: Update.
	* interps.c, language.c, linespec.c, linux-nat.c: Update.
	* m32r-linux-nat.c, m68k-tdep.c, m68kbsd-nat.c: Update.
	* m68klinux-nat.c, m88kbsd-nat.c, macroexp.c, macroscope.c: Update.
	* macrotab.c, maint.c, mdebugread.c, memattr.c: Update.
	* mips-linux-tdep.c, mips-tdep.c, mips64obsd-nat.c: Update.
	* mipsnbsd-nat.c, mn10300-tdep.c, monitor.c, nto-procfs.c: Update.
	* objc-lang.c, objfiles.c, objfiles.h, ocd.c, osabi.c: Update.
	* parse.c, ppc-bdm.c, ppc-linux-nat.c, ppc-sysv-tdep.c: Update.
	* ppcnbsd-nat.c, ppcobsd-nat.c, printcmd.c, procfs.c: Update.
	* regcache.c, reggroups.c, remote-e7000.c, remote-mips.c: Update.
	* remote-rdp.c, remote-sds.c, remote-sim.c, remote-st.c: Update.
	* remote-utils.c, remote.c, rs6000-nat.c, rs6000-tdep.c: Update.
	* s390-nat.c, s390-tdep.c, sentinel-frame.c, serial.c: Update.
	* sh-tdep.c, sh3-rom.c, sh64-tdep.c, shnbsd-nat.c: Update.
	* solib-aix5.c, solib-svr4.c, solib.c, source.c: Update.
	* sparc-nat.c, stabsread.c, stack.c, symfile.c, symtab.c: Update.
	* symtab.h, target.c, tracepoint.c, ui-file.c, ui-out.c: Update.
	* utils.c, valops.c, valprint.c, vax-nat.c, vaxbsd-nat.c: Update.
	* win32-nat.c, xcoffread.c, xstormy16-tdep.c: Update.
	* cli/cli-cmds.c, cli/cli-logging.c, cli/cli-script.c: Update.
	* cli/cli-setshow.c, mi/mi-cmd-break.c, mi/mi-cmds.c: Update.
	* mi/mi-console.c, mi/mi-getopt.c, mi/mi-out.c: Update.
	* tui/tui-file.c, tui/tui-interp.c: Update.
2005-02-11 18:13:55 +00:00

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/* Native-dependent code for Motorola 68000 BSD's.
Copyright 2004 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 "gdbcore.h"
#include "inferior.h"
#include "regcache.h"
#include "gdb_assert.h"
#include <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
#include "m68k-tdep.h"
#include "inf-ptrace.h"
static int
m68kbsd_gregset_supplies_p (int regnum)
{
return (regnum >= M68K_D0_REGNUM && regnum <= M68K_PC_REGNUM);
}
static int
m68kbsd_fpregset_supplies_p (int regnum)
{
return (regnum >= M68K_FP0_REGNUM && regnum <= M68K_FPI_REGNUM);
}
/* Supply the general-purpose registers stored in GREGS to REGCACHE. */
static void
m68kbsd_supply_gregset (struct regcache *regcache, const void *gregs)
{
const char *regs = gregs;
int regnum;
for (regnum = M68K_D0_REGNUM; regnum <= M68K_PC_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum, regs + regnum * 4);
}
/* Supply the floating-point registers stored in FPREGS to REGCACHE. */
static void
m68kbsd_supply_fpregset (struct regcache *regcache, const void *fpregs)
{
const char *regs = fpregs;
int regnum;
for (regnum = M68K_FP0_REGNUM; regnum <= M68K_FPI_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum,
regs + m68kbsd_fpreg_offset (regnum));
}
/* Collect the general-purpose registers from REGCACHE and store them
in GREGS. */
static void
m68kbsd_collect_gregset (const struct regcache *regcache,
void *gregs, int regnum)
{
char *regs = gregs;
int i;
for (i = M68K_D0_REGNUM; i <= M68K_PC_REGNUM; i++)
{
if (regnum == -1 || regnum == i)
regcache_raw_collect (regcache, i, regs + i * 4);
}
}
/* Collect the floating-point registers from REGCACHE and store them
in FPREGS. */
static void
m68kbsd_collect_fpregset (struct regcache *regcache,
void *fpregs, int regnum)
{
char *regs = fpregs;
int i;
for (i = M68K_FP0_REGNUM; i <= M68K_FPI_REGNUM; i++)
{
if (regnum == -1 || regnum == i)
regcache_raw_collect (regcache, i, regs + m68kbsd_fpreg_offset (i));
}
}
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers (including the floating-point registers). */
static void
m68kbsd_fetch_inferior_registers (int regnum)
{
if (regnum == -1 || m68kbsd_gregset_supplies_p (regnum))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &regs, 0) == -1)
perror_with_name (_("Couldn't get registers"));
m68kbsd_supply_gregset (current_regcache, &regs);
}
if (regnum == -1 || m68kbsd_fpregset_supplies_p (regnum))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
m68kbsd_supply_fpregset (current_regcache, &fpregs);
}
}
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
this for all registers (including the floating-point registers). */
static void
m68kbsd_store_inferior_registers (int regnum)
{
if (regnum == -1 || m68kbsd_gregset_supplies_p (regnum))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &regs, 0) == -1)
perror_with_name (_("Couldn't get registers"));
m68kbsd_collect_gregset (current_regcache, &regs, regnum);
if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &regs, 0) == -1)
perror_with_name (_("Couldn't write registers"));
}
if (regnum == -1 || m68kbsd_fpregset_supplies_p (regnum))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
m68kbsd_collect_fpregset (current_regcache, &fpregs, regnum);
if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't write floating point status"));
}
}
/* Support for debugging kernel virtual memory images. */
#include <sys/types.h>
#include <machine/pcb.h>
#include "bsd-kvm.h"
/* OpenBSD doesn't have these. */
#ifndef PCB_REGS_FP
#define PCB_REGS_FP 10
#endif
#ifndef PCB_REGS_SP
#define PCB_REGS_SP 11
#endif
static int
m68kbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
{
int regnum, tmp;
int i = 0;
/* The following is true for NetBSD 1.6.2:
The pcb contains %d2...%d7, %a2...%a7 and %ps. This accounts for
all callee-saved registers. From this information we reconstruct
the register state as it would look when we just returned from
cpu_switch(). */
/* The stack pointer shouldn't be zero. */
if (pcb->pcb_regs[PCB_REGS_SP] == 0)
return 0;
for (regnum = M68K_D2_REGNUM; regnum <= M68K_D7_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum, &pcb->pcb_regs[i++]);
for (regnum = M68K_A2_REGNUM; regnum <= M68K_SP_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum, &pcb->pcb_regs[i++]);
tmp = pcb->pcb_ps & 0xffff;
regcache_raw_supply (regcache, M68K_PS_REGNUM, &tmp);
read_memory (pcb->pcb_regs[PCB_REGS_FP] + 4, (char *) &tmp, sizeof tmp);
regcache_raw_supply (regcache, M68K_PC_REGNUM, &tmp);
return 1;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_m68kbsd_nat (void);
void
_initialize_m68kbsd_nat (void)
{
struct target_ops *t;
t = inf_ptrace_target ();
t->to_fetch_registers = m68kbsd_fetch_inferior_registers;
t->to_store_registers = m68kbsd_store_inferior_registers;
add_target (t);
/* Support debugging kernel virtual memory images. */
bsd_kvm_add_target (m68kbsd_supply_pcb);
}