X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=gdb%2Flinux-tdep.c;h=c51ede9c618f8eb99f3c483a36020b70560b3e05;hb=809df4465f01277ab689fb82b3f16ff79f9a2606;hp=e18e134ed361afc648f886087cdb83e6a8a3ab44;hpb=2c0b251b29eeafa90c84a3a938c744bc7ba81aea;p=binutils-gdb.git

diff --git a/gdb/linux-tdep.c b/gdb/linux-tdep.c
index e18e134ed36..c51ede9c618 100644
--- a/gdb/linux-tdep.c
+++ b/gdb/linux-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for GNU/Linux, architecture independent.
 
-   Copyright (C) 2009 Free Software Foundation, Inc.
+   Copyright (C) 2009, 2010 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -20,6 +20,29 @@
 #include "defs.h"
 #include "gdbtypes.h"
 #include "linux-tdep.h"
+#include "auxv.h"
+#include "target.h"
+#include "elf/common.h"
+#include "inferior.h"
+
+static struct gdbarch_data *linux_gdbarch_data_handle;
+
+struct linux_gdbarch_data
+  {
+    struct type *siginfo_type;
+  };
+
+static void *
+init_linux_gdbarch_data (struct gdbarch *gdbarch)
+{
+  return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct linux_gdbarch_data);
+}
+
+static struct linux_gdbarch_data *
+get_linux_gdbarch_data (struct gdbarch *gdbarch)
+{
+  return gdbarch_data (gdbarch, linux_gdbarch_data_handle);
+}
 
 /* This function is suitable for architectures that don't
    extend/override the standard siginfo structure.  */
@@ -27,49 +50,51 @@
 struct type *
 linux_get_siginfo_type (struct gdbarch *gdbarch)
 {
+  struct linux_gdbarch_data *linux_gdbarch_data;
   struct type *int_type, *uint_type, *long_type, *void_ptr_type;
   struct type *uid_type, *pid_type;
   struct type *sigval_type, *clock_type;
   struct type *siginfo_type, *sifields_type;
   struct type *type;
 
-  int_type = init_type (TYPE_CODE_INT,
-			gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT,
-			0, "int", NULL);
-  uint_type = init_type (TYPE_CODE_INT,
-			 gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT,
-			 0, "unsigned int", NULL);
-  long_type = init_type (TYPE_CODE_INT,
-			 gdbarch_long_bit (gdbarch) / HOST_CHAR_BIT,
-			 0, "long", NULL);
+  linux_gdbarch_data = get_linux_gdbarch_data (gdbarch);
+  if (linux_gdbarch_data->siginfo_type != NULL)
+    return linux_gdbarch_data->siginfo_type;
+
+  int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
+			 	0, "int");
+  uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
+				 1, "unsigned int");
+  long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
+				 0, "long");
   void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
 
   /* sival_t */
-  sigval_type = init_composite_type (NULL, TYPE_CODE_UNION);
+  sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
   TYPE_NAME (sigval_type) = xstrdup ("sigval_t");
   append_composite_type_field (sigval_type, "sival_int", int_type);
   append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type);
 
   /* __pid_t */
-  pid_type = init_type (TYPE_CODE_TYPEDEF, TYPE_LENGTH (int_type),
-			TYPE_FLAG_TARGET_STUB, NULL, NULL);
-  TYPE_NAME (pid_type) = xstrdup ("__pid_t");
+  pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, TYPE_LENGTH (int_type),
+			xstrdup ("__pid_t"));
   TYPE_TARGET_TYPE (pid_type) = int_type;
+  TYPE_TARGET_STUB (pid_type) = 1;
 
   /* __uid_t */
-  uid_type = init_type (TYPE_CODE_TYPEDEF, TYPE_LENGTH (uint_type),
-			TYPE_FLAG_TARGET_STUB, NULL, NULL);
-  TYPE_NAME (uid_type) = xstrdup ("__uid_t");
+  uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, TYPE_LENGTH (uint_type),
+			xstrdup ("__uid_t"));
   TYPE_TARGET_TYPE (uid_type) = uint_type;
+  TYPE_TARGET_STUB (uid_type) = 1;
 
   /* __clock_t */
-  clock_type = init_type (TYPE_CODE_TYPEDEF, TYPE_LENGTH (long_type),
-			  TYPE_FLAG_TARGET_STUB, NULL, NULL);
-  TYPE_NAME (clock_type) = xstrdup ("__clock_t");
+  clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, TYPE_LENGTH (long_type),
+			  xstrdup ("__clock_t"));
   TYPE_TARGET_TYPE (clock_type) = long_type;
+  TYPE_TARGET_STUB (clock_type) = 1;
 
   /* _sifields */
-  sifields_type = init_composite_type (NULL, TYPE_CODE_UNION);
+  sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
 
   {
     const int si_max_size = 128;
@@ -86,27 +111,27 @@ linux_get_siginfo_type (struct gdbarch *gdbarch)
   }
 
   /* _kill */
-  type = init_composite_type (NULL, TYPE_CODE_STRUCT);
+  type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
   append_composite_type_field (type, "si_pid", pid_type);
   append_composite_type_field (type, "si_uid", uid_type);
   append_composite_type_field (sifields_type, "_kill", type);
 
   /* _timer */
-  type = init_composite_type (NULL, TYPE_CODE_STRUCT);
+  type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
   append_composite_type_field (type, "si_tid", int_type);
   append_composite_type_field (type, "si_overrun", int_type);
   append_composite_type_field (type, "si_sigval", sigval_type);
   append_composite_type_field (sifields_type, "_timer", type);
 
   /* _rt */
-  type = init_composite_type (NULL, TYPE_CODE_STRUCT);
+  type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
   append_composite_type_field (type, "si_pid", pid_type);
   append_composite_type_field (type, "si_uid", uid_type);
   append_composite_type_field (type, "si_sigval", sigval_type);
   append_composite_type_field (sifields_type, "_rt", type);
 
   /* _sigchld */
-  type = init_composite_type (NULL, TYPE_CODE_STRUCT);
+  type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
   append_composite_type_field (type, "si_pid", pid_type);
   append_composite_type_field (type, "si_uid", uid_type);
   append_composite_type_field (type, "si_status", int_type);
@@ -115,18 +140,18 @@ linux_get_siginfo_type (struct gdbarch *gdbarch)
   append_composite_type_field (sifields_type, "_sigchld", type);
 
   /* _sigfault */
-  type = init_composite_type (NULL, TYPE_CODE_STRUCT);
+  type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
   append_composite_type_field (type, "si_addr", void_ptr_type);
   append_composite_type_field (sifields_type, "_sigfault", type);
 
   /* _sigpoll */
-  type = init_composite_type (NULL, TYPE_CODE_STRUCT);
+  type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
   append_composite_type_field (type, "si_band", long_type);
   append_composite_type_field (type, "si_fd", int_type);
   append_composite_type_field (sifields_type, "_sigpoll", type);
 
   /* struct siginfo */
-  siginfo_type = init_composite_type (NULL, TYPE_CODE_STRUCT);
+  siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
   TYPE_NAME (siginfo_type) = xstrdup ("siginfo");
   append_composite_type_field (siginfo_type, "si_signo", int_type);
   append_composite_type_field (siginfo_type, "si_errno", int_type);
@@ -135,5 +160,54 @@ linux_get_siginfo_type (struct gdbarch *gdbarch)
 				       "_sifields", sifields_type,
 				       TYPE_LENGTH (long_type));
 
+  linux_gdbarch_data->siginfo_type = siginfo_type;
+
   return siginfo_type;
 }
+
+int
+linux_has_shared_address_space (void)
+{
+  /* Determine whether we are running on uClinux or normal Linux
+     kernel.  */
+  CORE_ADDR dummy;
+  int target_is_uclinux;
+
+  target_is_uclinux
+    = (target_auxv_search (&current_target, AT_NULL, &dummy) > 0
+       && target_auxv_search (&current_target, AT_PAGESZ, &dummy) == 0);
+
+  return target_is_uclinux;
+}
+
+/* This is how we want PTIDs from core files to be printed.  */
+
+static char *
+linux_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
+{
+  static char buf[80];
+
+  if (ptid_get_lwp (ptid) != 0)
+    {
+      snprintf (buf, sizeof (buf), "LWP %ld", ptid_get_lwp (ptid));
+      return buf;
+    }
+
+  return normal_pid_to_str (ptid);
+}
+
+/* To be called from the various GDB_OSABI_LINUX handlers for the
+   various GNU/Linux architectures and machine types.  */
+
+void
+linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+  set_gdbarch_core_pid_to_str (gdbarch, linux_core_pid_to_str);
+}
+
+void
+_initialize_linux_tdep (void)
+{
+  linux_gdbarch_data_handle =
+    gdbarch_data_register_post_init (init_linux_gdbarch_data);
+}