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authorFred Fish <fnf@specifix.com>1996-01-04 21:09:59 +0000
committerFred Fish <fnf@specifix.com>1996-01-04 21:09:59 +0000
commit7531f36e8e7f241cdf8d03ceb99af99f1a784ec0 (patch)
tree910bf1c43111e1082245bba5a47babcf481729c5 /gdb/infptrace.c
parent5c5e420c9be3e395a456cec696af4aa27178c717 (diff)
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Changes to hexdump "struct user" for child process on some configurations
that use ptrace(). This is not as useful as doing a full dump in a human readable format, but is better than nothing when you are trying to verify what is actually in the user struct. * infptrace.c (udot_info): New function. (PT_*): Define each individually if that one is not defined. Update copyright to 1996. * rs6000-nat.c (kernel_u_size): New function Include <sys/user.h> for "struct user" Update copyright to 1996. * alpha-nat.c (kernel_u_size): New function. Include <sys/user.h> for "struct user" Update copyright to 1996. * sparc-nat.c (kernel_u_size): New function. Include <sys/user.h> for "struct user" Update copyright to 1996. * i386b-nat.c (kernel_u_size): New function. Update copyright to 1996. * i386v-nat.c (kernel_u_size): New function. Update copyright to 1996. * config/i386/nm-fbsd.h (KERNEL_U_SIZE): Define. (kernel_u_size): Declare. Update copyright to 1996. * config/i386/nm-linux.h (KERNEL_U_SIZE): Define. (kernel_u_size): Declare. Update copyright to 1996. * config/sparc/nm-sun4os4.h (KERNEL_U_SIZE): Define. (kernel_u_size): Declare. Update copyright to 1996. * config/alpha/nm-osf2.h (KERNEL_U_SIZE): Define. (kernel_u_size): Declare. Update copyright to 1996. * config/rs6000/nm-rs6000.h (KERNEL_U_SIZE): Define. (kernel_u_size): Declare. Update copyright to 1996.
Diffstat (limited to 'gdb/infptrace.c')
-rw-r--r--gdb/infptrace.c97
1 files changed, 82 insertions, 15 deletions
diff --git a/gdb/infptrace.c b/gdb/infptrace.c
index 0013e91..9f6e7fb 100644
--- a/gdb/infptrace.c
+++ b/gdb/infptrace.c
@@ -1,6 +1,5 @@
/* Low level Unix child interface to ptrace, for GDB when running under Unix.
- Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
- Free Software Foundation, Inc.
+ Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
This file is part of GDB.
@@ -16,7 +15,7 @@ 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "frame.h"
@@ -41,20 +40,33 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#endif
#endif /* NO_PTRACE_H */
-#if !defined (PT_KILL)
-#define PT_KILL 8
+#if !defined (PT_READ_I)
+#define PT_READ_I 1 /* Read word from text space */
+#endif
+#if !defined (PT_READ_D)
+#define PT_READ_D 2 /* Read word from data space */
+#endif
+#if !defined (PT_READ_U)
+#define PT_READ_U 3 /* Read word from kernel user struct */
+#endif
+#if !defined (PT_WRITE_I)
+#define PT_WRITE_I 4 /* Write word to text space */
+#endif
+#if !defined (PT_WRITE_D)
+#define PT_WRITE_D 5 /* Write word to data space */
+#endif
+#if !defined (PT_WRITE_U)
+#define PT_WRITE_U 6 /* Write word to kernel user struct */
+#endif
+#if !defined (PT_CONTINUE)
+#define PT_CONTINUE 7 /* Continue after signal */
#endif
-
#if !defined (PT_STEP)
-#define PT_STEP 9
-#define PT_CONTINUE 7
-#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
-#define PT_WRITE_D 5
-#endif /* No PT_STEP. */
+#define PT_STEP 9 /* Set flag for single stepping */
+#endif
+#if !defined (PT_KILL)
+#define PT_KILL 8 /* Send child a SIGKILL signal */
+#endif
#ifndef PT_ATTACH
#define PT_ATTACH PTRACE_ATTACH
@@ -460,4 +472,59 @@ child_xfer_memory (memaddr, myaddr, len, write, target)
}
return len;
}
+
+
+static void
+udot_info ()
+{
+ int udot_off; /* Offset into user struct */
+ int udot_val; /* Value from user struct at udot_off */
+ char mess[128]; /* For messages */
+
+ if (!target_has_execution)
+ {
+ error ("The program is not being run.");
+ }
+
+#if !defined (KERNEL_U_SIZE)
+
+ /* Adding support for this command is easy. Typically you just add a
+ routine, called "kernel_u_size" that returns the size of the user
+ struct, to the appropriate *-nat.c file and then add to the native
+ config file "#define KERNEL_U_SIZE kernel_u_size()" */
+ error ("Don't know how large ``struct user'' is in this version of gdb.");
+
+#else
+
+ for (udot_off = 0; udot_off < KERNEL_U_SIZE; udot_off += sizeof (udot_val))
+ {
+ if ((udot_off % 24) == 0)
+ {
+ if (udot_off > 0)
+ {
+ printf_filtered ("\n");
+ }
+ printf_filtered ("%04x:", udot_off);
+ }
+ udot_val = ptrace (PT_READ_U, inferior_pid, (PTRACE_ARG3_TYPE) udot_off, 0);
+ if (errno != 0)
+ {
+ sprintf (mess, "\nreading user struct at offset 0x%x", udot_off);
+ perror_with_name (mess);
+ }
+ /* Avoid using nonportable (?) "*" in print specs */
+ printf_filtered (sizeof (int) == 4 ? " 0x%08x" : " 0x%16x", udot_val);
+ }
+ printf_filtered ("\n");
+
+#endif
+}
+
+void
+_initialize_infptrace ()
+{
+ add_info ("udot", udot_info,
+ "Print contents of kernel ``struct user'' for current child.");
+
+}
#endif /* !defined (CHILD_XFER_MEMORY). */