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-rw-r--r--gdb/ChangeLog18
-rw-r--r--gdb/Makefile.in1
-rw-r--r--gdb/config/alpha/alpha-linux.mh3
-rw-r--r--gdb/config/arm/linux.mh2
-rw-r--r--gdb/config/i386/linux.mh3
-rw-r--r--gdb/config/i386/x86-64linux.mh1
-rw-r--r--gdb/config/ia64/linux.mh2
-rw-r--r--gdb/config/m68k/linux.mh2
-rw-r--r--gdb/config/mips/linux.mh3
-rw-r--r--gdb/config/nm-linux.h4
-rw-r--r--gdb/config/powerpc/linux.mh2
-rw-r--r--gdb/config/s390/s390.mh2
-rw-r--r--gdb/config/sparc/linux.mh2
-rw-r--r--gdb/linux-nat.c176
14 files changed, 212 insertions, 9 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 9ca17ce..a9b8d6a 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,21 @@
+2003-06-15 Daniel Jacobowitz <drow@mvista.com>
+
+ * Makefile.in (linux-nat.o): Add rule.
+ * linux-nat.c: New file.
+ * config/nm-linux.h (CHILD_INSERT_FORK_CATCHPOINT): Define.
+ (CHILD_INSERT_VFORK_CATCHPOINT): Define.
+ (CHILD_INSERT_EXEC_CATCHPOINT): Define.
+ * config/alpha/alpha-linux.mh (NATDEPFILES): Add linux-nat.o.
+ * config/arm/linux.mh (NATDEPFILES): Likewise.
+ * config/i386/linux.mh (NATDEPFILES): Likewise.
+ * config/i386/x86-64linux.mh (NATDEPFILES): Likewise.
+ * config/ia64/linux.mh (NATDEPFILES): Likewise.
+ * config/m68k/linux.mh (NATDEPFILES): Likewise.
+ * config/mips/linux.mh (NATDEPFILES): Likewise.
+ * config/powerpc/linux.mh (NATDEPFILES): Likewise.
+ * config/s390/s390.mh (NATDEPFILES): Likewise.
+ * config/sparc/linux.mh (NATDEPFILES): Likewise.
+
2003-06-15 Mark Kettenis <kettenis@gnu.org>
* i387-tdep.c: Reorder includes, fix some whitespace issues and
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index a0342e3..6dcd7b7 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -1916,6 +1916,7 @@ lin-lwp.o: lin-lwp.c $(defs_h) $(gdb_assert_h) $(gdb_string_h) $(gdb_wait_h) \
linespec.o: linespec.c $(defs_h) $(symtab_h) $(frame_h) $(command_h) \
$(symfile_h) $(objfiles_h) $(source_h) $(demangle_h) $(value_h) \
$(completer_h) $(cp_abi_h) $(parser_defs_h) $(block_h) $(objc_lang_h)
+linux-nat.o: linux-nat.c $(defs_h) $(inferior_h) $(target_h) $(gdb_wait_h)
linux-proc.o: linux-proc.c $(defs_h) $(inferior_h) $(regcache_h) \
$(gregset_h) $(gdbcore_h) $(gdbthread_h) $(elf_bfd_h) \
$(cli_decode_h) $(gdb_string_h)
diff --git a/gdb/config/alpha/alpha-linux.mh b/gdb/config/alpha/alpha-linux.mh
index 7691d07..d373179 100644
--- a/gdb/config/alpha/alpha-linux.mh
+++ b/gdb/config/alpha/alpha-linux.mh
@@ -2,7 +2,8 @@
XM_FILE= xm-alphalinux.h
NAT_FILE= nm-linux.h
NATDEPFILES= infptrace.o inftarg.o corelow.o alpha-nat.o linux-proc.o \
- fork-child.o proc-service.o thread-db.o lin-lwp.o gcore.o
+ fork-child.o proc-service.o thread-db.o lin-lwp.o gcore.o \
+ linux-nat.o
LOADLIBES = -ldl -rdynamic
diff --git a/gdb/config/arm/linux.mh b/gdb/config/arm/linux.mh
index fa1eb63..1b0a3ba 100644
--- a/gdb/config/arm/linux.mh
+++ b/gdb/config/arm/linux.mh
@@ -5,7 +5,7 @@ XM_FILE= xm-linux.h
NAT_FILE= nm-linux.h
NATDEPFILES= infptrace.o inftarg.o fork-child.o corelow.o \
core-regset.o arm-linux-nat.o linux-proc.o gcore.o \
- proc-service.o thread-db.o lin-lwp.o
+ proc-service.o thread-db.o lin-lwp.o linux-nat.o
LOADLIBES= -ldl -rdynamic
diff --git a/gdb/config/i386/linux.mh b/gdb/config/i386/linux.mh
index 494ccf1..2a20cdd 100644
--- a/gdb/config/i386/linux.mh
+++ b/gdb/config/i386/linux.mh
@@ -5,7 +5,8 @@ XM_FILE= xm-i386.h
NAT_FILE= nm-linux.h
NATDEPFILES= infptrace.o inftarg.o fork-child.o corelow.o linux-proc.o \
core-aout.o i386-nat.o i386-linux-nat.o \
- proc-service.o thread-db.o lin-lwp.o linux-proc.o gcore.o
+ proc-service.o thread-db.o lin-lwp.o linux-proc.o gcore.o \
+ linux-nat.o
# The dynamically loaded libthread_db needs access to symbols in the
# gdb executable.
diff --git a/gdb/config/i386/x86-64linux.mh b/gdb/config/i386/x86-64linux.mh
index 895d1fb..0c3c855 100644
--- a/gdb/config/i386/x86-64linux.mh
+++ b/gdb/config/i386/x86-64linux.mh
@@ -5,6 +5,7 @@ XM_FILE= xm-i386.h
NAT_FILE= nm-x86-64linux.h
NATDEPFILES= infptrace.o inftarg.o fork-child.o corelow.o \
core-regset.o i386-nat.o x86-64-linux-nat.o \
+ linux-nat.o \
proc-service.o thread-db.o lin-lwp.o linux-proc.o gcore.o
# The dynamically loaded libthread_db needs access to symbols in the
diff --git a/gdb/config/ia64/linux.mh b/gdb/config/ia64/linux.mh
index 65f3028..2013af3 100644
--- a/gdb/config/ia64/linux.mh
+++ b/gdb/config/ia64/linux.mh
@@ -5,6 +5,6 @@ XM_FILE= xm-linux.h
NAT_FILE= nm-linux.h
NATDEPFILES= infptrace.o inftarg.o fork-child.o corelow.o gcore.o \
core-aout.o core-regset.o ia64-linux-nat.o linux-proc.o \
- proc-service.o thread-db.o lin-lwp.o
+ proc-service.o thread-db.o lin-lwp.o linux-nat.o
LOADLIBES = -ldl -rdynamic
diff --git a/gdb/config/m68k/linux.mh b/gdb/config/m68k/linux.mh
index f94df64..d814b73 100644
--- a/gdb/config/m68k/linux.mh
+++ b/gdb/config/m68k/linux.mh
@@ -5,7 +5,7 @@ XM_FILE= xm-linux.h
NAT_FILE= nm-linux.h
NATDEPFILES= infptrace.o inftarg.o fork-child.o \
corelow.o core-aout.o m68klinux-nat.o linux-proc.o gcore.o \
- proc-service.o thread-db.o lin-lwp.o
+ proc-service.o thread-db.o lin-lwp.o linux-nat.o
# The dynamically loaded libthread_db needs access to symbols in the
# gdb executable.
diff --git a/gdb/config/mips/linux.mh b/gdb/config/mips/linux.mh
index 991fd6c..38f8725 100644
--- a/gdb/config/mips/linux.mh
+++ b/gdb/config/mips/linux.mh
@@ -2,6 +2,7 @@
XM_FILE= xm-linux.h
NAT_FILE= nm-linux.h
NATDEPFILES= infptrace.o inftarg.o fork-child.o mips-linux-nat.o \
- thread-db.o lin-lwp.o proc-service.o linux-proc.o gcore.o
+ thread-db.o lin-lwp.o proc-service.o linux-proc.o gcore.o \
+ linux-nat.o
LOADLIBES = -ldl -rdynamic
diff --git a/gdb/config/nm-linux.h b/gdb/config/nm-linux.h
index 0fb5627..7e0a076 100644
--- a/gdb/config/nm-linux.h
+++ b/gdb/config/nm-linux.h
@@ -77,3 +77,7 @@ struct mem_attrib;
extern int linux_proc_xfer_memory (CORE_ADDR addr, char *myaddr, int len,
int write, struct mem_attrib *attrib,
struct target_ops *target);
+
+#define CHILD_INSERT_FORK_CATCHPOINT
+#define CHILD_INSERT_VFORK_CATCHPOINT
+#define CHILD_INSERT_EXEC_CATCHPOINT
diff --git a/gdb/config/powerpc/linux.mh b/gdb/config/powerpc/linux.mh
index d0a2104..240c4e0 100644
--- a/gdb/config/powerpc/linux.mh
+++ b/gdb/config/powerpc/linux.mh
@@ -6,7 +6,7 @@ XM_CLIBS=
NAT_FILE= nm-linux.h
NATDEPFILES= infptrace.o inftarg.o fork-child.o linux-proc.o \
ppc-linux-nat.o proc-service.o thread-db.o lin-lwp.o \
- gcore.o
+ gcore.o linux-nat.o
LOADLIBES = -ldl -rdynamic
diff --git a/gdb/config/s390/s390.mh b/gdb/config/s390/s390.mh
index 300a5e3..ab3350f 100644
--- a/gdb/config/s390/s390.mh
+++ b/gdb/config/s390/s390.mh
@@ -6,7 +6,7 @@ XM_CLIBS=
NAT_FILE= nm-linux.h
NATDEPFILES= infptrace.o inftarg.o fork-child.o corelow.o s390-nat.o \
core-aout.o core-regset.o linux-proc.o gcore.o thread-db.o lin-lwp.o \
- proc-service.o
+ proc-service.o linux-nat.o
LOADLIBES = -ldl -rdynamic
diff --git a/gdb/config/sparc/linux.mh b/gdb/config/sparc/linux.mh
index 4a2c41f..f36dbb1 100644
--- a/gdb/config/sparc/linux.mh
+++ b/gdb/config/sparc/linux.mh
@@ -5,7 +5,7 @@ XM_FILE= xm-linux.h
NAT_FILE= nm-linux.h
NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o sparc-nat.o \
proc-service.o thread-db.o lin-lwp.o sparc-linux-nat.o \
- linux-proc.o gcore.o
+ linux-proc.o gcore.o linux-nat.o
# The dynamically loaded libthread_db needs access to symbols in the
# gdb executable.
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
new file mode 100644
index 0000000..046544d
--- /dev/null
+++ b/gdb/linux-nat.c
@@ -0,0 +1,176 @@
+/* GNU/Linux native-dependent code common to multiple platforms.
+ Copyright (C) 2003 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ 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 2 of the License, or
+ (at your option) any later version.
+
+ 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 this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include "defs.h"
+#include "inferior.h"
+#include "target.h"
+
+#include "gdb_wait.h"
+#include <sys/ptrace.h>
+
+/* If the system headers did not provide the constants, hard-code the normal
+ values. */
+#ifndef PTRACE_EVENT_FORK
+
+#define PTRACE_SETOPTIONS 0x4200
+#define PTRACE_GETEVENTMSG 0x4201
+
+/* options set using PTRACE_SETOPTIONS */
+#define PTRACE_O_TRACESYSGOOD 0x00000001
+#define PTRACE_O_TRACEFORK 0x00000002
+#define PTRACE_O_TRACEVFORK 0x00000004
+#define PTRACE_O_TRACECLONE 0x00000008
+#define PTRACE_O_TRACEEXEC 0x00000010
+
+/* Wait extended result codes for the above trace options. */
+#define PTRACE_EVENT_FORK 1
+#define PTRACE_EVENT_VFORK 2
+#define PTRACE_EVENT_CLONE 3
+#define PTRACE_EVENT_EXEC 4
+
+#endif /* PTRACE_EVENT_FORK */
+
+/* We can't always assume that this flag is available, but all systems
+ with the ptrace event handlers also have __WALL, so it's safe to use
+ here. */
+#ifndef __WALL
+#define __WALL 0x40000000 /* Wait for any child. */
+#endif
+
+/* This variable is a tri-state flag: -1 for unknown, 0 if PTRACE_O_TRACEFORK
+ can not be used, 1 if it can. */
+
+static int linux_supports_tracefork_flag = -1;
+
+
+/* A helper function for linux_test_for_tracefork, called after fork (). */
+
+static void
+linux_tracefork_child (void)
+{
+ int ret;
+
+ ptrace (PTRACE_TRACEME, 0, 0, 0);
+ kill (getpid (), SIGSTOP);
+ fork ();
+ exit (0);
+}
+
+/* Determine if PTRACE_O_TRACEFORK can be used to follow fork events. We
+ create a child process, attach to it, use PTRACE_SETOPTIONS to enable
+ fork tracing, and let it fork. If the process exits, we assume that
+ we can't use TRACEFORK; if we get the fork notification, and we can
+ extract the new child's PID, then we assume that we can. */
+
+static void
+linux_test_for_tracefork (void)
+{
+ int child_pid, ret, status;
+ long second_pid;
+
+ child_pid = fork ();
+ if (child_pid == -1)
+ perror_with_name ("linux_test_for_tracefork: fork");
+
+ if (child_pid == 0)
+ linux_tracefork_child ();
+
+ ret = waitpid (child_pid, &status, 0);
+ if (ret == -1)
+ perror_with_name ("linux_test_for_tracefork: waitpid");
+ else if (ret != child_pid)
+ error ("linux_test_for_tracefork: waitpid: unexpected result %d.", ret);
+ if (! WIFSTOPPED (status))
+ error ("linux_test_for_tracefork: waitpid: unexpected status %d.", status);
+
+ linux_supports_tracefork_flag = 0;
+
+ ret = ptrace (PTRACE_SETOPTIONS, child_pid, 0, PTRACE_O_TRACEFORK);
+ if (ret != 0)
+ {
+ ptrace (PTRACE_KILL, child_pid, 0, 0);
+ waitpid (child_pid, &status, 0);
+ return;
+ }
+
+ ptrace (PTRACE_CONT, child_pid, 0, 0);
+ ret = waitpid (child_pid, &status, 0);
+ if (ret == child_pid && WIFSTOPPED (status)
+ && status >> 16 == PTRACE_EVENT_FORK)
+ {
+ second_pid = 0;
+ ret = ptrace (PTRACE_GETEVENTMSG, child_pid, 0, &second_pid);
+ if (ret == 0 && second_pid != 0)
+ {
+ int second_status;
+
+ linux_supports_tracefork_flag = 1;
+ waitpid (second_pid, &second_status, 0);
+ ptrace (PTRACE_DETACH, second_pid, 0, 0);
+ }
+ }
+
+ if (WIFSTOPPED (status))
+ {
+ ptrace (PTRACE_DETACH, child_pid, 0, 0);
+ waitpid (child_pid, &status, 0);
+ }
+}
+
+/* Return non-zero iff we have tracefork functionality available.
+ This function also sets linux_supports_tracefork_flag. */
+
+static int
+linux_supports_tracefork (void)
+{
+ if (linux_supports_tracefork_flag == -1)
+ linux_test_for_tracefork ();
+ return linux_supports_tracefork_flag;
+}
+
+
+int
+child_insert_fork_catchpoint (int pid)
+{
+ if (linux_supports_tracefork ())
+ error ("Fork catchpoints have not been implemented yet.");
+ else
+ error ("Your system does not support fork catchpoints.");
+}
+
+int
+child_insert_vfork_catchpoint (int pid)
+{
+ if (linux_supports_tracefork ())
+ error ("Vfork catchpoints have not been implemented yet.");
+ else
+ error ("Your system does not support vfork catchpoints.");
+}
+
+int
+child_insert_exec_catchpoint (int pid)
+{
+ if (linux_supports_tracefork ())
+ error ("Exec catchpoints have not been implemented yet.");
+ else
+ error ("Your system does not support exec catchpoints.");
+}
+
+
generated by cgit v1.1 at 2024-11-04 15:22:53 +0000