Don't update target_dcache if it is not initialized

[deliverable/binutils-gdb.git] / gdb / inf-ttrace.c

diff --git a/gdb/inf-ttrace.c b/gdb/inf-ttrace.c
index ab075db9c4450e67c56d960e36a18e34da0bb34f..eb0adcb2298c3de25167375bb31561a8433ac7af 100644 (file)
--- a/gdb/inf-ttrace.c
+++ b/gdb/inf-ttrace.c
@@ -1,7 +1,6 @@
 /* Low-level child interface to ttrace.
 
-   Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
-   Free Software Foundation, Inc.
+   Copyright (C) 2004-2013 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -32,13 +31,14 @@
 #include "target.h"
 
 #include "gdb_assert.h"
-#include "gdb_string.h"
+#include <string.h>
 #include <sys/mman.h>
 #include <sys/ttrace.h>
 #include <signal.h>
 
 #include "inf-child.h"
 #include "inf-ttrace.h"
+#include "common/filestuff.h"
 
 \f
 
@@ -409,7 +409,8 @@ inf_ttrace_stopped_by_watchpoint (void)
 static pid_t inf_ttrace_vfork_ppid = -1;
 
 static int
-inf_ttrace_follow_fork (struct target_ops *ops, int follow_child)
+inf_ttrace_follow_fork (struct target_ops *ops, int follow_child,
+                       int detach_fork)
 {
   pid_t pid, fpid;
   lwpid_t lwpid, flwpid;
@@ -458,7 +459,7 @@ inf_ttrace_follow_fork (struct target_ops *ops, int follow_child)
       inf->pspace = parent_inf->pspace;
       inf->aspace = parent_inf->aspace;
       copy_terminal_info (inf, parent_inf);
-      detach_breakpoints (pid);
+      detach_breakpoints (ptid_build (pid, lwpid, 0));
 
       target_terminal_ours ();
       fprintf_unfiltered (gdb_stdlog,
@@ -468,7 +469,11 @@ inf_ttrace_follow_fork (struct target_ops *ops, int follow_child)
   else
     {
       inferior_ptid = ptid_build (pid, lwpid, 0);
-      detach_breakpoints (fpid);
+      /* Detach any remaining breakpoints in the child.  In the case
+        of fork events, we do not need to do this, because breakpoints
+        should have already been removed earlier.  */
+      if (tts.tts_event == TTEVT_VFORK)
+       detach_breakpoints (ptid_build (fpid, flwpid, 0));
 
       target_terminal_ours ();
       fprintf_unfiltered (gdb_stdlog,
@@ -555,6 +560,11 @@ do_cleanup_pfds (void *dummy)
   close (inf_ttrace_pfd1[1]);
   close (inf_ttrace_pfd2[0]);
   close (inf_ttrace_pfd2[1]);
+
+  unmark_fd_no_cloexec (inf_ttrace_pfd1[0]);
+  unmark_fd_no_cloexec (inf_ttrace_pfd1[1]);
+  unmark_fd_no_cloexec (inf_ttrace_pfd2[0]);
+  unmark_fd_no_cloexec (inf_ttrace_pfd2[1]);
 }
 
 static void
@@ -569,6 +579,11 @@ inf_ttrace_prepare (void)
       close (inf_ttrace_pfd2[0]);
       perror_with_name (("pipe"));
     }
+
+  mark_fd_no_cloexec (inf_ttrace_pfd1[0]);
+  mark_fd_no_cloexec (inf_ttrace_pfd1[1]);
+  mark_fd_no_cloexec (inf_ttrace_pfd2[0]);
+  mark_fd_no_cloexec (inf_ttrace_pfd2[1]);
 }
 
 /* Prepare to be traced.  */
@@ -627,9 +642,6 @@ inf_ttrace_him (struct target_ops *ops, int pid)
 
   push_target (ops);
 
-  /* START_INFERIOR_TRAPS_EXPECTED is defined in inferior.h, and will
-     be 1 or 2 depending on whether we're starting without or with a
-     shell.  */
   startup_inferior (START_INFERIOR_TRAPS_EXPECTED);
 
   /* On some targets, there must be some explicit actions taken after
@@ -650,7 +662,7 @@ inf_ttrace_create_inferior (struct target_ops *ops, char *exec_file,
   gdb_assert (inf_ttrace_vfork_ppid == -1);
 
   pid = fork_inferior (exec_file, allargs, env, inf_ttrace_me, NULL,
-                      inf_ttrace_prepare, NULL);
+                      inf_ttrace_prepare, NULL, NULL);
 
   inf_ttrace_him (ops, pid);
 }
@@ -786,7 +798,7 @@ inf_ttrace_attach (struct target_ops *ops, char *args, int from_tty)
 }
 
 static void
-inf_ttrace_detach (struct target_ops *ops, char *args, int from_tty)
+inf_ttrace_detach (struct target_ops *ops, const char *args, int from_tty)
 {
   pid_t pid = ptid_get_pid (inferior_ptid);
   int sig = 0;
@@ -905,11 +917,11 @@ inf_ttrace_resume_callback (struct thread_info *info, void *arg)
 
 static void
 inf_ttrace_resume (struct target_ops *ops,
-                  ptid_t ptid, int step, enum target_signal signal)
+                  ptid_t ptid, int step, enum gdb_signal signal)
 {
   int resume_all;
   ttreq_t request = step ? TT_LWP_SINGLE : TT_LWP_CONTINUE;
-  int sig = target_signal_to_host (signal);
+  int sig = gdb_signal_to_host (signal);
   struct thread_info *info;
 
   /* A specific PTID means `step only this process id'.  */
@@ -1011,7 +1023,7 @@ inf_ttrace_wait (struct target_ops *ops,
     case TTEVT_BPT_SSTEP:
       /* Make it look like a breakpoint.  */
       ourstatus->kind = TARGET_WAITKIND_STOPPED;
-      ourstatus->value.sig = TARGET_SIGNAL_TRAP;
+      ourstatus->value.sig = GDB_SIGNAL_TRAP;
       break;
 #endif
 
@@ -1127,7 +1139,7 @@ inf_ttrace_wait (struct target_ops *ops,
     case TTEVT_SIGNAL:
       ourstatus->kind = TARGET_WAITKIND_STOPPED;
       ourstatus->value.sig =
-       target_signal_from_host (tts.tts_u.tts_signal.tts_signo);
+       gdb_signal_from_host (tts.tts_u.tts_signal.tts_signo);
       break;
 
     case TTEVT_SYSCALL_ENTRY:
@@ -1325,7 +1337,7 @@ inf_ttrace_target (void)
 \f
 
 /* Prevent warning from -Wmissing-prototypes.  */
-void _initialize_hppa_hpux_nat (void);
+void _initialize_inf_ttrace (void);
 
 void
 _initialize_inf_ttrace (void)