old-cross-binutils/gdb/m32r-linux-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 GNU/Linux m32r.
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 "inferior.h"
#include "gdbcore.h"
#include "regcache.h"
#include "linux-nat.h"
#include "gdb_assert.h"
#include "gdb_string.h"
#include <sys/ptrace.h>
#include <sys/user.h>
#include <sys/procfs.h>
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
#include "m32r-tdep.h"
/* Since EVB register is not available for native debug, we reduce
the number of registers. */
#define M32R_LINUX_NUM_REGS (M32R_NUM_REGS - 1)
/* Mapping between the general-purpose registers in `struct user'
format and GDB's register array layout. */
static int regmap[] = {
4, 5, 6, 7, 0, 1, 2, 8,
9, 10, 11, 12, 13, 24, 25, 23,
19, 19, 26, 23, 22, 20, 16, 15
};
#define PSW_REGMAP 19
#define BBPSW_REGMAP 21
#define SPU_REGMAP 23
#define SPI_REGMAP 26
/* Doee apply to the corresponding SET requests as well. */
#define GETREGS_SUPPLIES(regno) (0 <= (regno) && (regno) <= M32R_LINUX_NUM_REGS)
/* Transfering the general-purpose registers between GDB, inferiors
and core files. */
/* Fill GDB's register array with the general-purpose register values
in *GREGSETP. */
void
supply_gregset (elf_gregset_t * gregsetp)
{
elf_greg_t *regp = (elf_greg_t *) gregsetp;
int i;
unsigned long psw, bbpsw;
psw = *(regp + PSW_REGMAP);
bbpsw = *(regp + BBPSW_REGMAP);
for (i = 0; i < M32R_LINUX_NUM_REGS; i++)
{
switch (i)
{
case PSW_REGNUM:
*(regp + regmap[i]) =
((0x00c1 & bbpsw) << 8) | ((0xc100 & psw) >> 8);
break;
case CBR_REGNUM:
*(regp + regmap[i]) = ((psw >> 8) & 1);
break;
}
if (i != M32R_SP_REGNUM)
regcache_raw_supply (current_regcache, i, regp + regmap[i]);
else if (psw & 0x8000)
regcache_raw_supply (current_regcache, i, regp + SPU_REGMAP);
else
regcache_raw_supply (current_regcache, i, regp + SPI_REGMAP);
}
}
/* Fetch all general-purpose registers from process/thread TID and
store their values in GDB's register array. */
static void
fetch_regs (int tid)
{
elf_gregset_t regs;
if (ptrace (PTRACE_GETREGS, tid, 0, (int) &regs) < 0)
perror_with_name (_("Couldn't get registers"));
supply_gregset (&regs);
}
/* Fill register REGNO (if it is a general-purpose register) in
*GREGSETPS with the value in GDB's register array. If REGNO is -1,
do this for all registers. */
void
fill_gregset (elf_gregset_t * gregsetp, int regno)
{
elf_greg_t *regp = (elf_greg_t *) gregsetp;
int i;
unsigned long psw, bbpsw, tmp;
psw = *(regp + PSW_REGMAP);
bbpsw = *(regp + BBPSW_REGMAP);
for (i = 0; i < M32R_LINUX_NUM_REGS; i++)
{
if (regno != -1 && regno != i)
continue;
if (i == CBR_REGNUM || i == PSW_REGNUM)
continue;
if (i == SPU_REGNUM || i == SPI_REGNUM)
continue;
if (i != M32R_SP_REGNUM)
regcache_raw_collect (current_regcache, i, regp + regmap[i]);
else if (psw & 0x8000)
regcache_raw_collect (current_regcache, i, regp + SPU_REGMAP);
else
regcache_raw_collect (current_regcache, i, regp + SPI_REGMAP);
}
}
/* Store all valid general-purpose registers in GDB's register array
into the process/thread specified by TID. */
static void
store_regs (int tid, int regno)
{
elf_gregset_t regs;
if (ptrace (PTRACE_GETREGS, tid, 0, (int) &regs) < 0)
perror_with_name (_("Couldn't get registers"));
fill_gregset (&regs, regno);
if (ptrace (PTRACE_SETREGS, tid, 0, (int) &regs) < 0)
perror_with_name (_("Couldn't write registers"));
}
/* Transfering floating-point registers between GDB, inferiors and cores.
Since M32R has no floating-point registers, these functions do nothing. */
void
supply_fpregset (gdb_fpregset_t *fpregs)
{
}
void
fill_fpregset (gdb_fpregset_t *fpregs, int regno)
{
}
/* Transferring arbitrary registers between GDB and inferior. */
/* Fetch register REGNO from the child process. If REGNO is -1, do
this for all registers (including the floating point and SSE
registers). */
void
fetch_inferior_registers (int regno)
{
int tid;
/* GNU/Linux LWP ID's are process ID's. */
tid = TIDGET (inferior_ptid);
if (tid == 0)
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
/* Use the PTRACE_GETREGS request whenever possible, since it
transfers more registers in one system call, and we'll cache the
results. */
if (regno == -1 || GETREGS_SUPPLIES (regno))
{
fetch_regs (tid);
return;
}
internal_error (__FILE__, __LINE__,
_("Got request for bad register number %d."), regno);
}
/* Store register REGNO back into the child process. If REGNO is -1,
do this for all registers (including the floating point and SSE
registers). */
void
store_inferior_registers (int regno)
{
int tid;
/* GNU/Linux LWP ID's are process ID's. */
if ((tid = TIDGET (inferior_ptid)) == 0)
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
/* Use the PTRACE_SETREGS request whenever possible, since it
transfers more registers in one system call. */
if (regno == -1 || GETREGS_SUPPLIES (regno))
{
store_regs (tid, regno);
return;
}
internal_error (__FILE__, __LINE__,
_("Got request to store bad register number %d."), regno);
}