* gdbserver/low-hppabsd.c: New file.
* gdbserver/Makefile.in (SFILES): Add low-hppabsd.c. * config/hppabsd.mh (XDEPFILES): Add ser-tcp.o (GDBSERVER_DEPFILES): Add low-hppabsd.o * config/hppaosf.mh: LIkewise. Needed this for the gdbserver framework development. Trying to avoid doing development work on lynx for the obvious reasons.
This commit is contained in:
parent
6b14af2bc6
commit
c2aa5a891e
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@ -1,3 +1,8 @@
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Tue Jul 18 00:41:31 1995 Jeff Law (law@snake.cs.utah.edu)
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* gdbserver/low-hppabsd.c: New file.
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* gdbserver/Makefile.in (SFILES): Add low-hppabsd.c.
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Mon Jul 17 21:35:18 1995 Fred Fish <fnf@cygnus.com>
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Mon Jul 17 21:35:18 1995 Fred Fish <fnf@cygnus.com>
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* dache.c (struct dcache_block): Change data member from unsigned char
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* dache.c (struct dcache_block): Change data member from unsigned char
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@ -65,6 +70,7 @@ Mon Jul 17 21:35:18 1995 Fred Fish <fnf@cygnus.com>
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that may be used someday.
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that may be used someday.
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* f-valprint.c (f_val_print): Remove unused local variable "straddr".
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* f-valprint.c (f_val_print): Remove unused local variable "straddr".
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>>>>>>> 1.3132
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Mon Jul 17 13:08:00 1995 Ian Lance Taylor <ian@cygnus.com>
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Mon Jul 17 13:08:00 1995 Ian Lance Taylor <ian@cygnus.com>
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* stabsread.h (struct stab_section_list): Define.
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* stabsread.h (struct stab_section_list): Define.
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@ -27,6 +27,7 @@ Makefile.in
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README
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README
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configure.in
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configure.in
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gdbserver.1
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gdbserver.1
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low-hppabsd.c
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low-lynx.c
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low-lynx.c
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low-sparc.c
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low-sparc.c
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low-sun3.c
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low-sun3.c
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@ -0,0 +1,379 @@
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/* Low level interface to ptrace, for the remote server for GDB.
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Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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|
but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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|
GNU General Public License for more details.
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|
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|
You should have received a copy of the GNU General Public License
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|
along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include <sys/wait.h>
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#include "frame.h"
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#include "inferior.h"
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#include <stdio.h>
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <sys/user.h>
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <sgtty.h>
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#include <fcntl.h>
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/***************Begin MY defs*********************/
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int quit_flag = 0;
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char registers[REGISTER_BYTES];
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/* Index within `registers' of the first byte of the space for
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register N. */
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char buf2[MAX_REGISTER_RAW_SIZE];
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/***************End MY defs*********************/
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#include <sys/ptrace.h>
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#include <machine/reg.h>
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extern char **environ;
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extern int errno;
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extern int inferior_pid;
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void error (), quit (), perror_with_name ();
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int query ();
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/* Start an inferior process and returns its pid.
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ALLARGS is a vector of program-name and args.
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ENV is the environment vector to pass. */
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int
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create_inferior (program, allargs)
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char *program;
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char **allargs;
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{
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int pid;
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pid = fork ();
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|
if (pid < 0)
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|
perror_with_name ("fork");
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|
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|
if (pid == 0)
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|
{
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|
ptrace (PT_TRACE_ME, 0, 0, 0, 0);
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|
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|
execv (program, allargs);
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|
fprintf (stderr, "Cannot exec %s: %s.\n", program,
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|
errno < sys_nerr ? sys_errlist[errno] : "unknown error");
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|
fflush (stderr);
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|
_exit (0177);
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}
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return pid;
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}
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/* Kill the inferior process. Make us have no inferior. */
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void
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kill_inferior ()
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{
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|
if (inferior_pid == 0)
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|
return;
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ptrace (8, inferior_pid, 0, 0, 0);
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wait (0);
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|
/*************inferior_died ();****VK**************/
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}
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|
/* Return nonzero if the given thread is still alive. */
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int
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|
mythread_alive (pid)
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|
int pid;
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|
{
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|
return 1;
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}
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|
/* Wait for process, returns status */
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|
unsigned char
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mywait (status)
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|
char *status;
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|
{
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|
int pid;
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|
union wait w;
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|
pid = wait (&w);
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|
if (pid != inferior_pid)
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|
perror_with_name ("wait");
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|
if (WIFEXITED (w))
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{
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fprintf (stderr, "\nChild exited with retcode = %x \n", WEXITSTATUS (w));
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*status = 'W';
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return ((unsigned char) WEXITSTATUS (w));
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}
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else if (!WIFSTOPPED (w))
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{
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fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w));
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*status = 'X';
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return ((unsigned char) WTERMSIG (w));
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}
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|
fetch_inferior_registers (0);
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|
*status = 'T';
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return ((unsigned char) WSTOPSIG (w));
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}
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/* Resume execution of the inferior process.
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|
If STEP is nonzero, single-step it.
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|
If SIGNAL is nonzero, give it that signal. */
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void
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myresume (step, signal)
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int step;
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|
int signal;
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{
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|
errno = 0;
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ptrace (step ? PT_STEP : PT_CONTINUE, inferior_pid, 1, signal, 0);
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|
if (errno)
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perror_with_name ("ptrace");
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}
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#if !defined (offsetof)
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#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
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#endif
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/* U_REGS_OFFSET is the offset of the registers within the u area. */
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#if !defined (U_REGS_OFFSET)
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#define U_REGS_OFFSET \
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|
ptrace (PT_READ_U, inferior_pid, \
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(PTRACE_ARG3_TYPE) (offsetof (struct user, u_ar0)), 0) \
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- KERNEL_U_ADDR
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#endif
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|
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|
unsigned int
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|
register_addr (regno, blockend)
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|
int regno;
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|
int blockend;
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|
{
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|
int addr;
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||||||
|
if (regno < 0 || regno >= ARCH_NUM_REGS)
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|
error ("Invalid register number %d.", regno);
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REGISTER_U_ADDR (addr, blockend, regno);
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return addr;
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}
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|
/* Fetch one register. */
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static void
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fetch_register (regno)
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|
int regno;
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|
{
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|
register unsigned int regaddr;
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char buf[MAX_REGISTER_RAW_SIZE];
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|
register int i;
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|
/* Offset of registers within the u area. */
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unsigned int offset;
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offset = U_REGS_OFFSET;
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|
regaddr = register_addr (regno, offset);
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|
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
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|
{
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|
errno = 0;
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|
*(int *) ®isters[ regno * 4 + i] = ptrace (PT_RUREGS, inferior_pid,
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|
(PTRACE_ARG3_TYPE) regaddr, 0, 0);
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|
regaddr += sizeof (int);
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|
if (errno != 0)
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|
{
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|
/* Warning, not error, in case we are attached; sometimes the
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|
kernel doesn't let us at the registers. */
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||||||
|
char *err = strerror (errno);
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|
char *msg = alloca (strlen (err) + 128);
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||||||
|
sprintf (msg, "reading register %d: %s", regno, err);
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||||||
|
error (msg);
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||||||
|
goto error_exit;
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||||||
|
}
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||||||
|
}
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||||||
|
error_exit:;
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||||||
|
}
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||||||
|
|
||||||
|
/* Fetch all registers, or just one, from the child process. */
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|
|
||||||
|
void
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||||||
|
fetch_inferior_registers (regno)
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||||||
|
int regno;
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||||||
|
{
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||||||
|
if (regno == -1 || regno == 0)
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||||||
|
for (regno = 0; regno < NUM_REGS; regno++)
|
||||||
|
fetch_register (regno);
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||||||
|
else
|
||||||
|
fetch_register (regno);
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||||||
|
}
|
||||||
|
|
||||||
|
/* Store our register values back into the inferior.
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||||||
|
If REGNO is -1, do this for all registers.
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||||||
|
Otherwise, REGNO specifies which register (so we can save time). */
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||||||
|
|
||||||
|
void
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||||||
|
store_inferior_registers (regno)
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||||||
|
int regno;
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||||||
|
{
|
||||||
|
register unsigned int regaddr;
|
||||||
|
char buf[80];
|
||||||
|
extern char registers[];
|
||||||
|
register int i;
|
||||||
|
unsigned int offset = U_REGS_OFFSET;
|
||||||
|
int scratch;
|
||||||
|
|
||||||
|
if (regno >= 0)
|
||||||
|
{
|
||||||
|
if (CANNOT_STORE_REGISTER (regno))
|
||||||
|
return;
|
||||||
|
regaddr = register_addr (regno, offset);
|
||||||
|
errno = 0;
|
||||||
|
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
|
||||||
|
{
|
||||||
|
scratch = *(int *) ®isters[REGISTER_BYTE (regno)] | 0x3;
|
||||||
|
ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
|
||||||
|
scratch, 0);
|
||||||
|
if (errno != 0)
|
||||||
|
{
|
||||||
|
/* Error, even if attached. Failing to write these two
|
||||||
|
registers is pretty serious. */
|
||||||
|
sprintf (buf, "writing register number %d", regno);
|
||||||
|
perror_with_name (buf);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
|
||||||
|
{
|
||||||
|
errno = 0;
|
||||||
|
ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
|
||||||
|
*(int *) ®isters[REGISTER_BYTE (regno) + i], 0);
|
||||||
|
if (errno != 0)
|
||||||
|
{
|
||||||
|
/* Warning, not error, in case we are attached; sometimes the
|
||||||
|
kernel doesn't let us at the registers. */
|
||||||
|
char *err = strerror (errno);
|
||||||
|
char *msg = alloca (strlen (err) + 128);
|
||||||
|
sprintf (msg, "writing register %d: %s",
|
||||||
|
regno, err);
|
||||||
|
error (msg);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
regaddr += sizeof(int);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
for (regno = 0; regno < NUM_REGS; regno++)
|
||||||
|
store_inferior_registers (regno);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory
|
||||||
|
in the NEW_SUN_PTRACE case.
|
||||||
|
It ought to be straightforward. But it appears that writing did
|
||||||
|
not write the data that I specified. I cannot understand where
|
||||||
|
it got the data that it actually did write. */
|
||||||
|
|
||||||
|
/* Copy LEN bytes from inferior's memory starting at MEMADDR
|
||||||
|
to debugger memory starting at MYADDR. */
|
||||||
|
|
||||||
|
read_inferior_memory (memaddr, myaddr, len)
|
||||||
|
CORE_ADDR memaddr;
|
||||||
|
char *myaddr;
|
||||||
|
int len;
|
||||||
|
{
|
||||||
|
register int i;
|
||||||
|
/* Round starting address down to longword boundary. */
|
||||||
|
register CORE_ADDR addr = memaddr & -sizeof (int);
|
||||||
|
/* Round ending address up; get number of longwords that makes. */
|
||||||
|
register int count
|
||||||
|
= (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
|
||||||
|
/* Allocate buffer of that many longwords. */
|
||||||
|
register int *buffer = (int *) alloca (count * sizeof (int));
|
||||||
|
|
||||||
|
/* Read all the longwords */
|
||||||
|
for (i = 0; i < count; i++, addr += sizeof (int))
|
||||||
|
{
|
||||||
|
buffer[i] = ptrace (1, inferior_pid, addr, 0, 0);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Copy appropriate bytes out of the buffer. */
|
||||||
|
memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Copy LEN bytes of data from debugger memory at MYADDR
|
||||||
|
to inferior's memory at MEMADDR.
|
||||||
|
On failure (cannot write the inferior)
|
||||||
|
returns the value of errno. */
|
||||||
|
|
||||||
|
int
|
||||||
|
write_inferior_memory (memaddr, myaddr, len)
|
||||||
|
CORE_ADDR memaddr;
|
||||||
|
char *myaddr;
|
||||||
|
int len;
|
||||||
|
{
|
||||||
|
register int i;
|
||||||
|
/* Round starting address down to longword boundary. */
|
||||||
|
register CORE_ADDR addr = memaddr & -sizeof (int);
|
||||||
|
/* Round ending address up; get number of longwords that makes. */
|
||||||
|
register int count
|
||||||
|
= (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
|
||||||
|
/* Allocate buffer of that many longwords. */
|
||||||
|
register int *buffer = (int *) alloca (count * sizeof (int));
|
||||||
|
extern int errno;
|
||||||
|
|
||||||
|
/* Fill start and end extra bytes of buffer with existing memory data. */
|
||||||
|
|
||||||
|
buffer[0] = ptrace (1, inferior_pid, addr, 0, 0);
|
||||||
|
|
||||||
|
if (count > 1)
|
||||||
|
{
|
||||||
|
buffer[count - 1]
|
||||||
|
= ptrace (1, inferior_pid,
|
||||||
|
addr + (count - 1) * sizeof (int), 0, 0);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Copy data to be written over corresponding part of buffer */
|
||||||
|
|
||||||
|
memcpy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
|
||||||
|
|
||||||
|
/* Write the entire buffer. */
|
||||||
|
|
||||||
|
for (i = 0; i < count; i++, addr += sizeof (int))
|
||||||
|
{
|
||||||
|
errno = 0;
|
||||||
|
ptrace (4, inferior_pid, addr, buffer[i], 0);
|
||||||
|
if (errno)
|
||||||
|
return errno;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
initialize ()
|
||||||
|
{
|
||||||
|
inferior_pid = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int
|
||||||
|
have_inferior_p ()
|
||||||
|
{
|
||||||
|
return inferior_pid != 0;
|
||||||
|
}
|
Loading…
Reference in New Issue