Resolve more problems with readelf uncovered by fuzzing binary files.

[deliverable/binutils-gdb.git] / gdb / hppa-hpux-nat.c

diff --git a/gdb/hppa-hpux-nat.c b/gdb/hppa-hpux-nat.c
index 48a4afc40b42f86c4ed7d506211203632bd5bc65..65a2b85f5893344c9edebd771c56f2769805ac6a 100644 (file)
--- a/gdb/hppa-hpux-nat.c
+++ b/gdb/hppa-hpux-nat.c
@@ -1,6 +1,6 @@
 /* Native-dependent code for PA-RISC HP-UX.
 
-   Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2004-2014 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -22,8 +22,8 @@
 #include "regcache.h"
 #include "target.h"
 
-#include "gdb_assert.h"
 #include <sys/ptrace.h>
+#include <sys/utsname.h>
 #include <machine/save_state.h>
 
 #ifdef HAVE_TTRACE
@@ -31,18 +31,16 @@
 #endif
 
 #include "hppa-tdep.h"
+#include "solib-som.h"
 #include "inf-ptrace.h"
 #include "inf-ttrace.h"
 
-/* Non-zero if we should pretend not to be a runnable target.  */
-int child_suppress_run = 0;
-
 /* Return the offset of register REGNUM within `struct save_state'.
    The offset returns depends on the flags in the "flags" register and
    the register size (32-bit or 64-bit).  These are taken from
    REGCACHE.  */
 
-LONGEST
+static LONGEST
 hppa_hpux_save_state_offset (struct regcache *regcache, int regnum)
 {
   LONGEST offset;
@@ -88,6 +86,7 @@ static void
 hppa_hpux_fetch_register (struct regcache *regcache, int regnum)
 {
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
+  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
   CORE_ADDR addr;
   size_t size;
   PTRACE_TYPE_RET *buf;
@@ -135,15 +134,17 @@ hppa_hpux_fetch_register (struct regcache *regcache, int regnum)
      `struct save_state', even for 64-bit code.  */
   if (regnum == HPPA_FLAGS_REGNUM && size == 8)
     {
-      ULONGEST flags = extract_unsigned_integer ((gdb_byte *)buf, 4);
-      store_unsigned_integer ((gdb_byte *)buf, 8, flags);
+      ULONGEST flags;
+      flags = extract_unsigned_integer ((gdb_byte *)buf, 4, byte_order);
+      store_unsigned_integer ((gdb_byte *)buf, 8, byte_order, flags);
     }
 
   regcache_raw_supply (regcache, regnum, buf);
 }
 
 static void
-hppa_hpux_fetch_inferior_registers (struct regcache *regcache, int regnum)
+hppa_hpux_fetch_inferior_registers (struct target_ops *ops,
+                                   struct regcache *regcache, int regnum)
 {
   if (regnum == -1)
     for (regnum = 0;
@@ -160,6 +161,7 @@ static void
 hppa_hpux_store_register (struct regcache *regcache, int regnum)
 {
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
+  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
   CORE_ADDR addr;
   size_t size;
   PTRACE_TYPE_RET *buf;
@@ -180,8 +182,9 @@ hppa_hpux_store_register (struct regcache *regcache, int regnum)
      `struct save_state', even for 64-bit code.  */
   if (regnum == HPPA_FLAGS_REGNUM && size == 8)
     {
-      ULONGEST flags = extract_unsigned_integer ((gdb_byte *)buf, 8);
-      store_unsigned_integer ((gdb_byte *)buf, 4, flags);
+      ULONGEST flags;
+      flags = extract_unsigned_integer ((gdb_byte *)buf, 8, byte_order);
+      store_unsigned_integer ((gdb_byte *)buf, 4, byte_order, flags);
       size = 4;
     }
 
@@ -218,7 +221,8 @@ hppa_hpux_store_register (struct regcache *regcache, int regnum)
    this for all registers (including the floating point registers).  */
 
 static void
-hppa_hpux_store_inferior_registers (struct regcache *regcache, int regnum)
+hppa_hpux_store_inferior_registers (struct target_ops *ops,
+                                   struct regcache *regcache, int regnum)
 {
   if (regnum == -1)
     for (regnum = 0;
@@ -229,15 +233,21 @@ hppa_hpux_store_inferior_registers (struct regcache *regcache, int regnum)
     hppa_hpux_store_register (regcache, regnum);
 }
 
-static int
-hppa_hpux_child_can_run (void)
+/* Set hpux_major_release variable to the value retrieved from a call to
+   uname function.  */
+
+static void
+set_hpux_major_release (void)
 {
-  /* This variable is controlled by modules that layer their own
-     process structure atop that provided here.  The code in
-     hpux-thread.c does this to support the HP-UX user-mode DCE
-     threads.  */
-  return !child_suppress_run;
+  struct utsname x;
+  char *p;
+
+  uname (&x);
+  p = strchr (x.release, '.');
+  if (p)
+    hpux_major_release = atoi (p + 1);
 }
+
 \f
 
 /* Prevent warning from -Wmissing-prototypes.  */
@@ -248,6 +258,8 @@ _initialize_hppa_hpux_nat (void)
 {
   struct target_ops *t;
 
+  set_hpux_major_release ();
+
 #ifdef HAVE_TTRACE
   t = inf_ttrace_target ();
 #else
@@ -256,7 +268,6 @@ _initialize_hppa_hpux_nat (void)
 
   t->to_fetch_registers = hppa_hpux_fetch_inferior_registers;
   t->to_store_registers = hppa_hpux_store_inferior_registers;
-  t->to_can_run = hppa_hpux_child_can_run;
 
   add_target (t);
 }