old-cross-binutils/gdb/vax-nat.c
Mark Kettenis b9e1c0d643 * vax-nat.c: New file.
* vaxbsd-nat.c: Tweak comment.
* Makefile.in (ALLDEPFILES): Add vax-nat.c, vaxbsd-nat.c and
vaxnbsd-tdep.c.
(vax-nat.o): New dependency.
* configure.host (vax-*-bsd*, vax-*-ultrix*): Set gdb_host to vax.
(vax-*-ultrix2*): Remove.
* config/vax/vax.mh: New file.
* config/vax/nm-vax.h (vax_kernel_u_addr): New extern declaration.
(KERNEL_U_ADDR): Define as vax_kernel_u_addr.
(vax_register_u_addr): New prototype.
(REGISTER_U_ADDR): Define using vax_register_u_addr.
* config/vax/vaxult2.mh: Remove file.
* config/vax/vaxult.mh: Remove file.
* config/vax/vaxbsd.mh: Remove file.
* config/vax/vax.mt (TM_FILE): Remove.
* config/vax/tm-vaxbsd.h: Remove file.
2004-08-06 19:14:44 +00:00

106 lines
2.7 KiB
C
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* Native-dependent code for VAX UNIXen (including older 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 "inferior.h"
#include "gdb_assert.h"
#include <sys/types.h>
#include <sys/dir.h>
#include <sys/user.h>
#ifdef HAVE_SYS_PTRACE_H
#include <sys/ptrace.h>
#endif
#ifndef PT_READ_U
#define PT_READ_U 3
#endif
#ifdef SYS_REG_H
/* UNIX 32V and derivatives (including 3BSD). */
#include <sys/reg.h>
#else
/* 4.2BSD and derivatives. */
#include <machine/reg.h>
#endif
#include "vax-tdep.h"
/* Address of the user structure. This is the the value for 32V; 3BSD
uses a different value, but hey, who's still using those systems? */
CORE_ADDR vax_kernel_u_addr = 0x80020000;
/* Location of the user's stored registers; usage is `u.u_ar0[XX]'.
For 4.2BSD and ULTRIX these are negative! See <machine/reg.h>. */
static int vax_register_index[] =
{
R0, R1, R2, R3, R4, R5,
R6, R7, R8, R9, R10, R11,
AP, FP, SP, PC, PS
};
CORE_ADDR
vax_register_u_addr (CORE_ADDR u_ar0, int regnum)
{
gdb_assert (regnum >= 0 && regnum < ARRAY_SIZE (vax_register_index));
/* Type is `int *u_ar0'. See <sys/user.h>. */
return u_ar0 + vax_register_index[regnum - VAX_R0_REGNUM] * 4;
}
CORE_ADDR
vax_register_u_offset (int regnum)
{
size_t u_ar0_offset = offsetof (struct user, u_ar0);
CORE_ADDR u_ar0;
int pid;
errno = 0;
pid = PIDGET (inferior_ptid);
u_ar0 = ptrace (PT_READ_U, pid, u_ar0_offset, 0);
if (errno)
perror_with_name ("Unable to determine location of registers");
return vax_register_u_addr (u_ar0, regnum) - vax_kernel_u_addr;
}
#include <nlist.h>
#ifndef _PATH_UNIX
#define _PATH_UNIX "/vmunix"
#endif
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_vax_nat (void);
void
_initialize_vax_nat (void)
{
struct nlist names[2];
names[0].n_name = "_u";
names[1].n_name = NULL;
if (nlist (_PATH_UNIX, names) == 0)
vax_kernel_u_addr = names[0].n_value;
}