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[platform/upstream/binutils.git] / gdb / procfs.c

diff --git a/gdb/procfs.c b/gdb/procfs.c
index f0d65d2..15a0409 100644 (file)
--- a/gdb/procfs.c
+++ b/gdb/procfs.c
@@ -22,6 +22,7 @@
 
 #include "defs.h"
 #include "inferior.h"
+#include "infrun.h"
 #include "target.h"
 #include "gdbcore.h"
 #include "elf-bfd.h"           /* for elfcore_write_* */
@@ -41,13 +42,10 @@
 #ifdef HAVE_SYS_SYSCALL_H
 #include <sys/syscall.h>
 #endif
-#include <sys/errno.h>
 #include "gdb_wait.h"
 #include <signal.h>
 #include <ctype.h>
 #include "gdb_bfd.h"
-#include <string.h>
-#include "gdb_assert.h"
 #include "inflow.h"
 #include "auxv.h"
 #include "procfs.h"
@@ -109,7 +107,7 @@
 
 /* This module defines the GDB target vector and its methods.  */
 
-static void procfs_attach (struct target_ops *, char *, int);
+static void procfs_attach (struct target_ops *, const char *, int);
 static void procfs_detach (struct target_ops *, const char *, int);
 static void procfs_resume (struct target_ops *,
                           ptid_t, int, enum gdb_signal);
@@ -147,7 +145,7 @@ static char * procfs_make_note_section (struct target_ops *self,
 static int procfs_can_use_hw_breakpoint (struct target_ops *self,
                                         int, int, int);
 
-static void procfs_info_proc (struct target_ops *, char *,
+static void procfs_info_proc (struct target_ops *, const char *,
                              enum info_proc_what);
 
 #if defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
@@ -2904,13 +2902,6 @@ static void do_detach (int signo);
 static void proc_trace_syscalls_1 (procinfo *pi, int syscallnum,
                                   int entry_or_exit, int mode, int from_tty);
 
-/* On mips-irix, we need to insert a breakpoint at __dbx_link during
-   the startup phase.  The following two variables are used to record
-   the address of the breakpoint, and the code that was replaced by
-   a breakpoint.  */
-static int dbx_link_bpt_addr = 0;
-static void *dbx_link_bpt;
-
 /* Sets up the inferior to be debugged.  Registers to trace signals,
    hardware faults, and syscalls.  Note: does not set RLC flag: caller
    may want to customize that.  Returns zero for success (note!
@@ -3038,7 +3029,7 @@ procfs_debug_inferior (procinfo *pi)
 }
 
 static void
-procfs_attach (struct target_ops *ops, char *args, int from_tty)
+procfs_attach (struct target_ops *ops, const char *args, int from_tty)
 {
   char *exec_file;
   int   pid;
@@ -3062,7 +3053,8 @@ procfs_attach (struct target_ops *ops, char *args, int from_tty)
       fflush (stdout);
     }
   inferior_ptid = do_attach (pid_to_ptid (pid));
-  push_target (ops);
+  if (!target_is_pushed (ops))
+    push_target (ops);
 }
 
 static void
@@ -3091,7 +3083,7 @@ procfs_detach (struct target_ops *ops, const char *args, int from_tty)
 
   inferior_ptid = null_ptid;
   detach_inferior (pid);
-  unpush_target (ops);
+  inf_child_maybe_unpush_target (ops);
 }
 
 static ptid_t
@@ -3381,23 +3373,6 @@ syscall_is_lwp_create (procinfo *pi, int scall)
   return 0;
 }
 
-/* Remove the breakpoint that we inserted in __dbx_link().
-   Does nothing if the breakpoint hasn't been inserted or has already
-   been removed.  */
-
-static void
-remove_dbx_link_breakpoint (void)
-{
-  if (dbx_link_bpt_addr == 0)
-    return;
-
-  if (deprecated_remove_raw_breakpoint (target_gdbarch (), dbx_link_bpt) != 0)
-    warning (_("Unable to remove __dbx_link breakpoint."));
-
-  dbx_link_bpt_addr = 0;
-  dbx_link_bpt = NULL;
-}
-
 #ifdef SYS_syssgi
 /* Return the address of the __dbx_link() function in the file
    refernced by ABFD by scanning its symbol table.  Return 0 if
@@ -3462,10 +3437,12 @@ insert_dbx_link_bpt_in_file (int fd, CORE_ADDR ignored)
   sym_addr = dbx_link_addr (abfd);
   if (sym_addr != 0)
     {
+      struct breakpoint *dbx_link_bpt;
+
       /* Insert the breakpoint.  */
-      dbx_link_bpt_addr = sym_addr;
-      dbx_link_bpt = deprecated_insert_raw_breakpoint (target_gdbarch (), NULL,
-                                                      sym_addr);
+      dbx_link_bpt
+       = create_and_insert_solib_event_breakpoint (target_gdbarch (),
+                                                   sym_addr);
       if (dbx_link_bpt == NULL)
        {
          warning (_("Failed to insert dbx_link breakpoint."));
@@ -3895,14 +3872,6 @@ wait_again:
 #if (FLTTRACE != FLTBPT)       /* Avoid "duplicate case" error.  */
                case FLTTRACE:
 #endif
-                 /* If we hit our __dbx_link() internal breakpoint,
-                    then remove it.  See comments in procfs_init_inferior()
-                    for more details.  */
-                 if (dbx_link_bpt_addr != 0
-                     && dbx_link_bpt_addr
-                        == regcache_read_pc (get_current_regcache ()))
-                   remove_dbx_link_breakpoint ();
-
                  wstat = (SIGTRAP << 8) | 0177;
                  break;
                case FLTSTACK:
@@ -3991,11 +3960,9 @@ procfs_xfer_partial (struct target_ops *ops, enum target_object object,
 #endif
 
     default:
-      if (ops->beneath != NULL)
-       return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
-                                             readbuf, writebuf, offset, len,
-                                             xfered_len);
-      return TARGET_XFER_E_IO;
+      return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
+                                           readbuf, writebuf, offset, len,
+                                           xfered_len);
     }
 }
 
@@ -4340,16 +4307,10 @@ procfs_mourn_inferior (struct target_ops *ops)
       if (pi)
        destroy_procinfo (pi);
     }
-  unpush_target (ops);
-
-  if (dbx_link_bpt != NULL)
-    {
-      deprecated_remove_raw_breakpoint (target_gdbarch (), dbx_link_bpt);
-      dbx_link_bpt_addr = 0;
-      dbx_link_bpt = NULL;
-    }
 
   generic_mourn_inferior ();
+
+  inf_child_maybe_unpush_target (ops);
 }
 
 /* When GDB forks to create a runnable inferior process, this function
@@ -4367,7 +4328,8 @@ procfs_init_inferior (struct target_ops *ops, int pid)
 
   /* This routine called on the parent side (GDB side)
      after GDB forks the inferior.  */
-  push_target (ops);
+  if (!target_is_pushed (ops))
+    push_target (ops);
 
   if ((pi = create_procinfo (pid, 0)) == NULL)
     perror (_("procfs: out of memory in 'init_inferior'"));
@@ -5137,7 +5099,7 @@ info_proc_mappings (procinfo *pi, int summary)
 /* Implement the "info proc" command.  */
 
 static void
-procfs_info_proc (struct target_ops *ops, char *args,
+procfs_info_proc (struct target_ops *ops, const char *args,
                  enum info_proc_what what)
 {
   struct cleanup *old_chain;
@@ -5372,7 +5334,7 @@ procfs_do_thread_registers (bfd *obfd, ptid_t ptid,
   /* This part is the old method for fetching registers.
      It should be replaced by the newer one using regsets
      once it is implemented in this platform:
-     gdbarch_regset_from_core_section() and regset->collect_regset().  */
+     gdbarch_iterate_over_regset_sections().  */
 
   old_chain = save_inferior_ptid ();
   inferior_ptid = ptid;
@@ -5518,7 +5480,6 @@ procfs_make_note_section (struct target_ops *self, bfd *obfd, int *note_size)
       xfree (auxv);
     }
 
-  make_cleanup (xfree, note_data);
   return note_data;
 }
 #else /* !Solaris */