/* Low level MIPS interface to ptrace, for GDB when running under Unix.
- Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc.
+ Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin.
This file is part of GDB.
-GDB is free software; you can redistribute it and/or modify
+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 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
-GDB is distributed in the hope that it will be useful,
+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 GDB; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-#include <stdio.h>
-#include <mips/inst.h>
#include "defs.h"
-#include "param.h"
-#include "frame.h"
#include "inferior.h"
-#include "symtab.h"
-#include "value.h"
+#include "gdbcore.h"
+
+/* For now we stub this out; sgi core format is super-hairy (and completely
+ different in the new release).
+ For most mips systems, this function is defined in coredep.c. */
-#ifdef USG
-#include <sys/types.h>
+#if defined(sgi)
+void
+fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
+ char *core_reg_sect;
+ unsigned core_reg_size;
+ int which;
+ unsigned int reg_addr;
+{
+ return;
+}
#endif
-#include <sys/param.h>
-#include <sys/dir.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-/* #include <fcntl.h> Can we live without this? */
+/* Access to the inferior is only good for native systems, not cross.
+ I am not sure why this is stubbed out on SGI... --gnu@cygnus.com */
-#include "gdbcore.h"
+#if defined(sgi) || !defined(GDB_TARGET_IS_MIPS)
+
+/* ARGSUSED */
+void
+fetch_inferior_registers (regno)
+ int regno;
+{
+ return;
+}
+
+/* ARGSUSED */
+void
+store_inferior_registers (regno)
+ int regno;
+{
+ return;
+}
-#include <sys/user.h> /* After a.out.h */
-#include <sys/file.h>
-#include <sys/stat.h>
+
+#else
+
+/* DECstation native... */
+
+#include <sys/ptrace.h>
+
+/* Map gdb internal register number to ptrace ``address''.
+ These ``addresses'' are defined in DECstation <sys/ptrace.h> */
+
+#define REGISTER_PTRACE_ADDR(regno) \
+ (regno < 32 ? GPR_BASE + regno \
+ : regno == PC_REGNUM ? PC \
+ : regno == CAUSE_REGNUM ? CAUSE \
+ : regno == HI_REGNUM ? MMHI \
+ : regno == LO_REGNUM ? MMLO \
+ : regno == FCRCS_REGNUM ? FPC_CSR \
+ : regno == FCRIR_REGNUM ? FPC_EIR \
+ : regno >= FP0_REGNUM ? FPR_BASE + (regno - FP0_REGNUM) \
+ : 0)
+
+static const char zerobuf[MAX_REGISTER_RAW_SIZE];
/* Get all registers from the inferior */
void
-fetch_inferior_registers ()
+fetch_inferior_registers (regno)
+ int regno;
{
- register int regno;
register unsigned int regaddr;
char buf[MAX_REGISTER_RAW_SIZE];
register int i;
for (regno = 1; regno < NUM_REGS; regno++)
{
- regaddr = register_addr (regno, 1);
+ regaddr = REGISTER_PTRACE_ADDR (regno);
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
{
- *(int *) &buf[i] = ptrace (3, inferior_pid, regaddr, 0);
+ *(int *) &buf[i] = ptrace (PT_READ_U, inferior_pid,
+ (PTRACE_ARG3_TYPE) regaddr, 0);
regaddr += sizeof (int);
}
supply_register (regno, buf);
}
+
+ supply_register (ZERO_REGNUM, zerobuf);
+ /* Frame ptr reg must appear to be 0; it is faked by stack handling code. */
+ supply_register (FP_REGNUM, zerobuf);
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
+void
store_inferior_registers (regno)
int regno;
-{
+ {
register unsigned int regaddr;
char buf[80];
if (regno > 0)
{
- regaddr = register_addr (regno, 1);
+ regaddr = REGISTER_PTRACE_ADDR (regno);
errno = 0;
- ptrace (6, inferior_pid, regaddr, read_register (regno));
+ ptrace (PT_WRITE_U, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
+ read_register (regno));
if (errno != 0)
{
sprintf (buf, "writing register number %d", regno);
}
else
{
- for (regno = 1; regno < NUM_REGS; regno++)
+ for (regno = 0; regno < NUM_REGS; regno++)
{
- if (regno == 32 || regno == 35 || regno == 36 || regno == 71)
+ if (regno == ZERO_REGNUM || regno == PS_REGNUM
+ || regno == BADVADDR_REGNUM || regno == CAUSE_REGNUM
+ || regno == FCRIR_REGNUM || regno == FP_REGNUM
+ || (regno >= FIRST_EMBED_REGNUM && regno <= LAST_EMBED_REGNUM))
continue;
regaddr = register_addr (regno, 1);
errno = 0;
- ptrace (6, inferior_pid, regaddr, read_register (regno));
+ ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
+ read_register (regno));
if (errno != 0)
{
sprintf (buf, "writing all regs, number %d", regno);
}
}
-#if 0
-void
-fetch_core_registers ()
-{
- register int regno;
- int val;
-
- for (regno = 1; regno < NUM_REGS; regno++) {
- char buf[MAX_REGISTER_RAW_SIZE];
-
- val = bfd_seek (core_bfd, register_addr (regno, 0));
- if (val < 0 || (val = bfd_read (core_bfd, buf, sizeof buf)) < 0) {
- char buffer[50];
- strcpy (buffer, "Reading register ");
- strcat (buffer, reg_names[regno]);
-
- perror_with_name (buffer);
- }
- supply_register (regno, buf);
- }
-}
-#endif /* 0 */
+#endif /* sgi */
projects / deliverable / binutils-gdb.git / blobdiff