/* Motorola m68k native support for Linux
- Copyright (C) 1996,1998 Free Software Foundation, Inc.
+ Copyright 1996, 1998, 2000, 2001 Free Software Foundation, Inc.
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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 "frame.h"
#include "inferior.h"
#include "language.h"
#include "gdbcore.h"
+#include "regcache.h"
#ifdef USG
#include <sys/types.h>
#include "floatformat.h"
#include "target.h"
-
\f
+
/* This table must line up with REGISTER_NAMES in tm-m68k.h */
-static const int regmap[] =
+static const int regmap[] =
{
PT_D0, PT_D1, PT_D2, PT_D3, PT_D4, PT_D5, PT_D6, PT_D7,
PT_A0, PT_A1, PT_A2, PT_A3, PT_A4, PT_A5, PT_A6, PT_USP,
is stored. */
int
-m68k_linux_register_u_addr (blockend, regnum)
- int blockend;
- int regnum;
+m68k_linux_register_u_addr (int blockend, int regnum)
{
- return (blockend + 4 * regmap[regnum]);
+ return (blockend + 4 * regmap[regnum]);
}
-/* Given a pointer to a general register set in /proc format (gregset_t *),
- unpack the register contents and supply them as gdb's idea of the current
- register values. */
+/* Given a pointer to a general register set in /proc format
+ (elf_gregset_t *), unpack the register contents and supply
+ them as gdb's idea of the current register values. */
/* Note both m68k-tdep.c and m68klinux-nat.c contain definitions
the definitions in m68klinux-nat.c will be used. This is a
bit of a hack. The supply_* routines do not belong in
*_tdep.c files. But, there are several lynx ports that currently
- depend on these definitions. */
+ depend on these definitions. */
#ifndef USE_PROC_FS
+/* Prototypes for supply_gregset etc. */
+#include "gregset.h"
+
void
-supply_gregset (gregsetp)
- gregset_t *gregsetp;
+supply_gregset (elf_gregset_t *gregsetp)
{
int regi;
- for (regi = D0_REGNUM ; regi <= SP_REGNUM ; regi++)
+ for (regi = D0_REGNUM; regi <= SP_REGNUM; regi++)
supply_register (regi, (char *) (*gregsetp + regmap[regi]));
supply_register (PS_REGNUM, (char *) (*gregsetp + PT_SR));
supply_register (PC_REGNUM, (char *) (*gregsetp + PT_PC));
}
/* Given a pointer to a floating point register set in /proc format
- (fpregset_t *), unpack the register contents and supply them as gdb's
- idea of the current floating point register values. */
+ (fpregset_t *), unpack the register contents and supply them as gdb's
+ idea of the current floating point register values. */
-void
-supply_fpregset (fpregsetp)
- fpregset_t *fpregsetp;
+void
+supply_fpregset (elf_fpregset_t *fpregsetp)
{
int regi;
- for (regi = FP0_REGNUM ; regi < FPC_REGNUM ; regi++)
+ for (regi = FP0_REGNUM; regi < FPC_REGNUM; regi++)
supply_register (regi, (char *) &fpregsetp->fpregs[(regi - FP0_REGNUM) * 3]);
supply_register (FPC_REGNUM, (char *) &fpregsetp->fpcntl[0]);
supply_register (FPS_REGNUM, (char *) &fpregsetp->fpcntl[1]);
#endif
\f
+/* Interpreting register set info found in core files. */
+
+/* Provide registers to GDB from a core file.
+
+ (We can't use the generic version of this function in
+ core-regset.c, because we need to use elf_gregset_t instead of
+ gregset_t.)
+
+ CORE_REG_SECT points to an array of bytes, which are the contents
+ of a `note' from a core file which BFD thinks might contain
+ register contents. CORE_REG_SIZE is its size.
+
+ WHICH says which register set corelow suspects this is:
+ 0 --- the general-purpose register set, in elf_gregset_t format
+ 2 --- the floating-point register set, in elf_fpregset_t format
+
+ REG_ADDR isn't used on Linux. */
+
+static void
+fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
+ int which, CORE_ADDR reg_addr)
+{
+ elf_gregset_t gregset;
+ elf_fpregset_t fpregset;
+
+ switch (which)
+ {
+ case 0:
+ if (core_reg_size != sizeof (gregset))
+ warning ("Wrong size gregset in core file.");
+ else
+ {
+ memcpy (&gregset, core_reg_sect, sizeof (gregset));
+ supply_gregset (&gregset);
+ }
+ break;
+
+ case 2:
+ if (core_reg_size != sizeof (fpregset))
+ warning ("Wrong size fpregset in core file.");
+ else
+ {
+ memcpy (&fpregset, core_reg_sect, sizeof (fpregset));
+ supply_fpregset (&fpregset);
+ }
+ break;
+
+ default:
+ /* We've covered all the kinds of registers we know about here,
+ so this must be something we wouldn't know what to do with
+ anyway. Just ignore it. */
+ break;
+ }
+}
+\f
+
int
-kernel_u_size ()
+kernel_u_size (void)
{
return (sizeof (struct user));
}
/* Return non-zero if PC points into the signal trampoline. */
int
-in_sigtramp (pc)
- CORE_ADDR pc;
+in_sigtramp (CORE_ADDR pc)
{
CORE_ADDR sp;
char buf[TARGET_SHORT_BIT / TARGET_CHAR_BIT];
if (read_memory_nobpt (pc, buf, sizeof (buf)))
return 0;
insn = extract_unsigned_integer (buf, sizeof (buf));
- if (insn == 0xdefc /* addaw #,sp */
- || insn == 0x7077 /* moveq #119,d0 */
- || insn == 0x4e40 /* trap #0 */
- || insn == 0x203c /* movel #,d0 */)
+ if (insn == 0xdefc /* addaw #,sp */
+ || insn == 0x7077 /* moveq #119,d0 */
+ || insn == 0x4e40 /* trap #0 */
+ || insn == 0x203c /* movel #,d0 */ )
return 1;
if (read_memory_nobpt (pc - 2, buf, sizeof (buf)))
return 0;
insn = extract_unsigned_integer (buf, sizeof (buf));
- if (insn == 0xdefc /* addaw #,sp */
- || insn == 0x7077 /* moveq #119,d0 */
- || insn == 0x4e40 /* trap #0 */
- || insn == 0x203c /* movel #,d0 */)
+ if (insn == 0xdefc /* addaw #,sp */
+ || insn == 0x7077 /* moveq #119,d0 */
+ || insn == 0x4e40 /* trap #0 */
+ || insn == 0x203c /* movel #,d0 */ )
return 1;
return 0;
}
+
+\f
+/* Register that we are able to handle Linux ELF core file formats. */
+
+static struct core_fns linux_elf_core_fns =
+{
+ bfd_target_elf_flavour, /* core_flavour */
+ default_check_format, /* check_format */
+ default_core_sniffer, /* core_sniffer */
+ fetch_core_registers, /* core_read_registers */
+ NULL /* next */
+};
+
+void
+_initialize_m68k_linux_nat ()
+{
+ add_core_fns (&linux_elf_core_fns);
+}
projects / deliverable / binutils-gdb.git / blobdiff