/* Low level Unix child interface to ptrace, for GDB when running under Unix.
- Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998,
- 1999, 2000, 2001
+ Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
This file is part of GDB.
#define PT_KILL 8 /* Send child a SIGKILL signal */
#endif
-#ifndef PT_ATTACH
-#define PT_ATTACH PTRACE_ATTACH
-#endif
-#ifndef PT_DETACH
-#define PT_DETACH PTRACE_DETACH
-#endif
-
#include "gdbcore.h"
#ifndef NO_SYS_FILE
#include <sys/file.h>
return wstate;
}
+#ifndef KILL_INFERIOR
void
kill_inferior (void)
{
ptrace_wait (null_ptid, &status);
target_mourn_inferior ();
}
+#endif /* KILL_INFERIOR */
#ifndef CHILD_RESUME
}
#endif /* CHILD_RESUME */
\f
-
-#ifdef ATTACH_DETACH
/* Start debugging the process whose number is PID. */
int
attach (int pid)
{
errno = 0;
+#ifndef PT_ATTACH
+#ifdef PTRACE_ATTACH
+#define PT_ATTACH PTRACE_ATTACH
+#endif
+#endif
+#ifdef PT_ATTACH
ptrace (PT_ATTACH, pid, (PTRACE_ARG3_TYPE) 0, 0);
if (errno)
perror_with_name ("ptrace");
attach_flag = 1;
return pid;
+#else
+ error ("This system does not support attaching to a process");
+#endif
}
/* Stop debugging the process whose number is PID
detach (int signal)
{
errno = 0;
+#ifndef PT_DETACH
+#ifdef PTRACE_DETACH
+#define PT_DETACH PTRACE_DETACH
+#endif
+#endif
+#ifdef PT_DETACH
ptrace (PT_DETACH, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) 1,
signal);
if (errno)
- perror_with_name ("ptrace");
+ print_sys_errmsg ("ptrace", errno);
attach_flag = 0;
+#else
+ error ("This system does not support detaching from a process");
+#endif
}
-#endif /* ATTACH_DETACH */
\f
/* Default the type of the ptrace transfer to int. */
#ifndef PTRACE_XFER_TYPE
/* This isn't really an address. But ptrace thinks of it as one. */
CORE_ADDR regaddr;
char mess[128]; /* For messages */
- register int i;
+ int i;
unsigned int offset; /* Offset of registers within the u area. */
- char *buf = alloca (MAX_REGISTER_RAW_SIZE);
+ char buf[MAX_REGISTER_SIZE];
int tid;
if (CANNOT_FETCH_REGISTER (regno))
{
- memset (buf, '\0', REGISTER_RAW_SIZE (regno)); /* Supply zeroes */
+ memset (buf, '\0', DEPRECATED_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 (PTRACE_XFER_TYPE))
+ for (i = 0; i < DEPRECATED_REGISTER_RAW_SIZE (regno); i += sizeof (PTRACE_XFER_TYPE))
{
errno = 0;
*(PTRACE_XFER_TYPE *) & buf[i] = ptrace (PT_READ_U, tid,
/* This isn't really an address. But ptrace thinks of it as one. */
CORE_ADDR regaddr;
char mess[128]; /* For messages */
- register int i;
+ int i;
unsigned int offset; /* Offset of registers within the u area. */
int tid;
- char *buf = alloca (MAX_REGISTER_RAW_SIZE);
+ char buf[MAX_REGISTER_SIZE];
if (CANNOT_STORE_REGISTER (regno))
{
regcache_collect (regno, buf);
/* Store the local buffer into the inferior a chunk at the time. */
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (PTRACE_XFER_TYPE))
+ for (i = 0; i < DEPRECATED_REGISTER_RAW_SIZE (regno); i += sizeof (PTRACE_XFER_TYPE))
{
errno = 0;
ptrace (PT_WRITE_U, tid, (PTRACE_ARG3_TYPE) regaddr,
int
child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
- struct mem_attrib *attrib ATTRIBUTE_UNUSED,
- struct target_ops *target)
+ struct mem_attrib *attrib, struct target_ops *target)
{
int i;
/* Round starting address down to longword boundary. */
PTRACE_XFER_TYPE *buffer;
struct cleanup *old_chain = NULL;
+#ifdef PT_IO
+ /* OpenBSD 3.1, NetBSD 1.6 and FreeBSD 5.0 have a new PT_IO request
+ that promises to be much more efficient in reading and writing
+ data in the traced process's address space. */
+
+ {
+ struct ptrace_io_desc piod;
+
+ /* NOTE: We assume that there are no distinct address spaces for
+ instruction and data. */
+ piod.piod_op = write ? PIOD_WRITE_D : PIOD_READ_D;
+ piod.piod_offs = (void *) memaddr;
+ piod.piod_addr = myaddr;
+ piod.piod_len = len;
+
+ if (ptrace (PT_IO, PIDGET (inferior_ptid), (caddr_t) &piod, 0) == -1)
+ {
+ /* If the PT_IO request is somehow not supported, fallback on
+ using PT_WRITE_D/PT_READ_D. Otherwise we will return zero
+ to indicate failure. */
+ if (errno != EINVAL)
+ return 0;
+ }
+ else
+ {
+ /* Return the actual number of bytes read or written. */
+ return piod.piod_len;
+ }
+ }
+#endif
+
/* Allocate buffer of that many longwords. */
if (len < GDB_MAX_ALLOCA)
{
if (errno)
return 0;
}
-#ifdef CLEAR_INSN_CACHE
- CLEAR_INSN_CACHE ();
-#endif
}
else
{
udot_info (char *dummy1, int dummy2)
{
#if defined (KERNEL_U_SIZE)
- int udot_off; /* Offset into user struct */
+ long udot_off; /* Offset into user struct */
int udot_val; /* Value from user struct at udot_off */
char mess[128]; /* For messages */
#endif
{
printf_filtered ("\n");
}
- printf_filtered ("%04x:", udot_off);
+ printf_filtered ("%s:", paddr (udot_off));
}
udot_val = ptrace (PT_READ_U, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) udot_off, 0);
if (errno != 0)
{
- sprintf (mess, "\nreading user struct at offset 0x%x", udot_off);
+ sprintf (mess, "\nreading user struct at offset 0x%s",
+ paddr_nz (udot_off));
perror_with_name (mess);
}
/* Avoid using nonportable (?) "*" in print specs */