/* Low level Unix child interface to ptrace, for GDB when running under Unix.
- Copyright (C) 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
+ Copyright 1988, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
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 "defs.h"
-#include "param.h"
#include "frame.h"
#include "inferior.h"
#include "target.h"
#include <sys/dir.h>
#include <signal.h>
#include <sys/ioctl.h>
+#ifndef USG
+#ifdef PTRACE_IN_WRONG_PLACE
+#include <ptrace.h>
+#else
#include <sys/ptrace.h>
+#endif
+#endif
+
#if !defined (PT_KILL)
#define PT_KILL 8
#define PT_STEP 9
#define PT_READ_U 3
#define PT_WRITE_U 6
#define PT_READ_I 1
+#define PT_READ_D 2
#define PT_WRITE_I 4
-/* The Following Change is for a Sun */
-#define PT_WRITE_D 4
+#define PT_WRITE_D 5
#endif /* No PT_KILL. */
#ifndef PT_ATTACH
#endif
#include "gdbcore.h"
-#include <sys/user.h> /* After a.out.h */
+#ifndef NO_SYS_FILE
#include <sys/file.h>
+#endif
#include <sys/stat.h>
+
+#if !defined (FETCH_INFERIOR_REGISTERS)
+#include <sys/user.h> /* Probably need to poke the user structure */
+#if defined (KERNEL_U_ADDR_BSD)
+#include <a.out.h> /* For struct nlist */
+#endif /* KERNEL_U_ADDR_BSD. */
+#endif /* !FETCH_INFERIOR_REGISTERS */
+
\f
/* This function simply calls ptrace with the given arguments.
It exists so that all calls to ptrace are isolated in this
machine-dependent file. */
int
call_ptrace (request, pid, addr, data)
- int request, pid, *addr, data;
+ int request, pid;
+ PTRACE_ARG3_TYPE addr;
+ int data;
{
return ptrace (request, pid, addr, data);
}
{
if (inferior_pid == 0)
return;
- ptrace (PT_KILL, inferior_pid, 0, 0);
+ ptrace (PT_KILL, inferior_pid, (PTRACE_ARG3_TYPE) 0, 0);
wait ((int *)0);
}
void
-kill_inferior (args, from_tty)
- char *args;
- int from_tty;
+kill_inferior ()
{
kill_inferior_fast ();
target_mourn_inferior ();
int signal;
{
errno = 0;
- /* An address of (int *)1 tells it to continue from where it was.
- (If GDB wanted it to start some other way, we have already written
- a new PC value to the child.) */
+
+ /* An address of (PTRACE_ARG3_TYPE)1 tells ptrace to continue from where
+ it was. (If GDB wanted it to start some other way, we have already
+ written a new PC value to the child.)
+
+ If this system does not support PT_STEP, a higher level function will
+ have called single_step() to transmute the step request into a
+ continue request (by setting breakpoints on all possible successor
+ instructions), so we don't have to worry about that here. */
+
if (step)
- {
-#if defined (NO_SINGLE_STEP)
- single_step (signal);
-#else /* Have single step. */
- ptrace (PT_STEP, inferior_pid, (int *)1, signal);
-#endif /* Have single step. */
- }
+ ptrace (PT_STEP, inferior_pid, (PTRACE_ARG3_TYPE) 1, signal);
else
- ptrace (PT_CONTINUE, inferior_pid, (int *)1, signal);
+ ptrace (PT_CONTINUE, inferior_pid, (PTRACE_ARG3_TYPE) 1, signal);
+
if (errno)
perror_with_name ("ptrace");
}
int pid;
{
errno = 0;
- ptrace (PT_ATTACH, pid, 0, 0);
+ ptrace (PT_ATTACH, pid, (PTRACE_ARG3_TYPE) 0, 0);
if (errno)
perror_with_name ("ptrace");
attach_flag = 1;
int signal;
{
errno = 0;
- ptrace (PT_DETACH, inferior_pid, 1, signal);
+ ptrace (PT_DETACH, inferior_pid, (PTRACE_ARG3_TYPE) 1, signal);
if (errno)
perror_with_name ("ptrace");
attach_flag = 0;
/* read the value of the u area from the hp-ux kernel */
void _initialize_kernel_u_addr ()
{
- struct user u;
nlist ("/hp-ux", &nl);
kernel_u_addr = nl[0].n_value;
}
#if !defined (U_REGS_OFFSET)
#define U_REGS_OFFSET \
ptrace (PT_READ_U, inferior_pid, \
- (int *)(offsetof (struct user, u_ar0)), 0) - KERNEL_U_ADDR
+ (PTRACE_ARG3_TYPE) (offsetof (struct user, u_ar0)), 0) \
+ - KERNEL_U_ADDR
+#endif
+
+/* Registers we shouldn't try to fetch. */
+#if !defined (CANNOT_FETCH_REGISTER)
+#define CANNOT_FETCH_REGISTER(regno) 0
#endif
/* Fetch one register. */
+
static void
fetch_register (regno)
int regno;
{
register unsigned int regaddr;
char buf[MAX_REGISTER_RAW_SIZE];
+ char mess[128]; /* For messages */
register int i;
/* Offset of registers within the u area. */
- unsigned int offset = U_REGS_OFFSET;
+ unsigned int offset;
+
+ if (CANNOT_FETCH_REGISTER (regno))
+ {
+ bzero (buf, REGISTER_RAW_SIZE (regno)); /* Supply zeroes */
+ supply_register (regno, buf);
+ return;
+ }
+
+ offset = U_REGS_OFFSET;
regaddr = register_addr (regno, offset);
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
{
- *(int *) &buf[i] = ptrace (PT_READ_U, inferior_pid, (int *)regaddr, 0);
+ errno = 0;
+ *(int *) &buf[i] = ptrace (PT_READ_U, inferior_pid,
+ (PTRACE_ARG3_TYPE) regaddr, 0);
regaddr += sizeof (int);
+ if (errno != 0)
+ {
+ sprintf (mess, "reading register %s (#%d)", reg_names[regno], regno);
+ perror_with_name (mess);
+ }
}
supply_register (regno, buf);
}
-/* Fetch all registers, or just one, from the child process.
- We should check for errors, but we don't. FIXME. */
-int
+/* Fetch all registers, or just one, from the child process. */
+
+void
fetch_inferior_registers (regno)
int regno;
{
fetch_register (regno);
else
fetch_register (regno);
- return 0;
}
/* Registers we shouldn't try to store. */
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
-int
+void
store_inferior_registers (regno)
int regno;
{
char buf[80];
extern char registers[];
register int i;
- int result = 0;
unsigned int offset = U_REGS_OFFSET;
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
{
errno = 0;
- ptrace (PT_WRITE_U, inferior_pid, (int *)regaddr,
+ ptrace (PT_WRITE_U, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
*(int *) ®isters[REGISTER_BYTE (regno) + i]);
if (errno != 0)
{
sprintf (buf, "writing register number %d(%d)", regno, i);
perror_with_name (buf);
- result = -1;
}
regaddr += sizeof(int);
}
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
{
errno = 0;
- ptrace (PT_WRITE_U, inferior_pid, (int *)regaddr,
+ ptrace (PT_WRITE_U, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
*(int *) ®isters[REGISTER_BYTE (regno) + i]);
if (errno != 0)
{
sprintf (buf, "writing register number %d(%d)", regno, i);
perror_with_name (buf);
- result = -1;
}
regaddr += sizeof(int);
}
}
}
- return result;
}
#endif /* !defined (FETCH_INFERIOR_REGISTERS). */
\f
anyway. */
int
-child_xfer_memory (memaddr, myaddr, len, write)
+child_xfer_memory (memaddr, myaddr, len, write, target)
CORE_ADDR memaddr;
char *myaddr;
int len;
int write;
+ struct target_ops *target; /* ignored */
{
register int i;
/* Round starting address down to longword boundary. */
if (addr != memaddr || len < (int)sizeof (int)) {
/* Need part of initial word -- fetch it. */
- buffer[0] = ptrace (PT_READ_I, inferior_pid, (int *)addr, 0);
+ buffer[0] = ptrace (PT_READ_I, inferior_pid, (PTRACE_ARG3_TYPE) addr,
+ 0);
}
if (count > 1) /* FIXME, avoid if even boundary */
{
buffer[count - 1]
= ptrace (PT_READ_I, inferior_pid,
- (int *)(addr + (count - 1) * sizeof (int)), 0);
+ (PTRACE_ARG3_TYPE) (addr + (count - 1) * sizeof (int)),
+ 0);
}
/* Copy data to be written over corresponding part of buffer */
- bcopy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
+ 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 (PT_WRITE_D, inferior_pid, (int *)addr, buffer[i]);
+ ptrace (PT_WRITE_D, inferior_pid, (PTRACE_ARG3_TYPE) addr,
+ buffer[i]);
if (errno)
{
/* Using the appropriate one (I or D) is necessary for
Gould NP1, at least. */
errno = 0;
- ptrace (PT_WRITE_I, inferior_pid, (int *)addr, buffer[i]);
+ ptrace (PT_WRITE_I, inferior_pid, (PTRACE_ARG3_TYPE) addr,
+ buffer[i]);
}
if (errno)
return 0;
for (i = 0; i < count; i++, addr += sizeof (int))
{
errno = 0;
- buffer[i] = ptrace (PT_READ_I, inferior_pid, (int *)addr, 0);
+ buffer[i] = ptrace (PT_READ_I, inferior_pid,
+ (PTRACE_ARG3_TYPE) addr, 0);
if (errno)
return 0;
QUIT;
}
/* Copy appropriate bytes out of the buffer. */
- bcopy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
+ memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
}
return len;
}
projects / deliverable / binutils-gdb.git / blobdiff