diff options
Diffstat (limited to 'gdb/infptrace.c')
| -rw-r--r-- | gdb/infptrace.c | 97 |
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). */ |