gdb/

[deliverable/binutils-gdb.git] / gdb / mipsnbsd-tdep.c

diff --git a/gdb/mipsnbsd-tdep.c b/gdb/mipsnbsd-tdep.c
index f4805a63f6e924725e1d4defec6a207cf0be8f88..3a7c8570e775e5f20812ebb15acab07f063d7281 100644 (file)
--- a/gdb/mipsnbsd-tdep.c
+++ b/gdb/mipsnbsd-tdep.c
@@ -1,6 +1,7 @@
 /* Target-dependent code for NetBSD/mips.
 
-   Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011
+   Free Software Foundation, Inc.
 
    Contributed by Wasabi Systems, Inc.
 
@@ -172,7 +173,8 @@ mipsnbsd_fill_reg (const struct regcache *regcache, char *regs, int regno)
 }
 
 void
-mipsnbsd_supply_fpreg (struct regcache *regcache, const char *fpregs, int regno)
+mipsnbsd_supply_fpreg (struct regcache *regcache,
+                      const char *fpregs, int regno)
 {
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
   int i;
@@ -243,40 +245,6 @@ static const unsigned char sigtramp_retcode_mipseb[RETCODE_SIZE] =
   0x00, 0x00, 0x00, 0x0c,      /* syscall */
 };
 
-static LONGEST
-mipsnbsd_sigtramp_offset (struct frame_info *next_frame)
-{
-  CORE_ADDR pc = frame_pc_unwind (next_frame);
-  const char *retcode = gdbarch_byte_order (get_frame_arch (next_frame))
-                       == BFD_ENDIAN_BIG ? sigtramp_retcode_mipseb :
-                       sigtramp_retcode_mipsel;
-  unsigned char ret[RETCODE_SIZE], w[4];
-  LONGEST off;
-  int i;
-
-  if (!safe_frame_unwind_memory (next_frame, pc, w, sizeof (w)))
-    return -1;
-
-  for (i = 0; i < RETCODE_NWORDS; i++)
-    {
-      if (memcmp (w, retcode + (i * 4), 4) == 0)
-       break;
-    }
-  if (i == RETCODE_NWORDS)
-    return -1;
-
-  off = i * 4;
-  pc -= off;
-
-  if (!safe_frame_unwind_memory (next_frame, pc, ret, sizeof (ret)))
-    return -1;
-
-  if (memcmp (ret, retcode, RETCODE_SIZE) == 0)
-    return off;
-
-  return -1;
-}
-
 /* Figure out where the longjmp will land.  We expect that we have
    just entered longjmp and haven't yet setup the stack frame, so the
    args are still in the argument regs.  MIPS_A0_REGNUM points at the
@@ -285,41 +253,43 @@ mipsnbsd_sigtramp_offset (struct frame_info *next_frame)
    success.  */
 
 #define NBSD_MIPS_JB_PC                        (2 * 4)
-#define NBSD_MIPS_JB_ELEMENT_SIZE      mips_isa_regsize (current_gdbarch)
-#define NBSD_MIPS_JB_OFFSET            (NBSD_MIPS_JB_PC * \
-                                        NBSD_MIPS_JB_ELEMENT_SIZE)
+#define NBSD_MIPS_JB_ELEMENT_SIZE(gdbarch)     mips_isa_regsize (gdbarch)
+#define NBSD_MIPS_JB_OFFSET(gdbarch)           (NBSD_MIPS_JB_PC * \
+                                        NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch))
 
 static int
 mipsnbsd_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
 {
+  struct gdbarch *gdbarch = get_frame_arch (frame);
+  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
   CORE_ADDR jb_addr;
   char *buf;
 
-  buf = alloca (NBSD_MIPS_JB_ELEMENT_SIZE);
+  buf = alloca (NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch));
 
   jb_addr = get_frame_register_unsigned (frame, MIPS_A0_REGNUM);
 
-  if (target_read_memory (jb_addr + NBSD_MIPS_JB_OFFSET, buf,
-                         NBSD_MIPS_JB_ELEMENT_SIZE))
+  if (target_read_memory (jb_addr + NBSD_MIPS_JB_OFFSET (gdbarch), buf,
+                         NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch)))
     return 0;
 
-  *pc = extract_unsigned_integer (buf, NBSD_MIPS_JB_ELEMENT_SIZE);
-
+  *pc = extract_unsigned_integer (buf, NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch),
+                                 byte_order);
   return 1;
 }
 
 static int
-mipsnbsd_cannot_fetch_register (int regno)
+mipsnbsd_cannot_fetch_register (struct gdbarch *gdbarch, int regno)
 {
   return (regno == MIPS_ZERO_REGNUM
-         || regno == mips_regnum (current_gdbarch)->fp_implementation_revision);
+         || regno == mips_regnum (gdbarch)->fp_implementation_revision);
 }
 
 static int
-mipsnbsd_cannot_store_register (int regno)
+mipsnbsd_cannot_store_register (struct gdbarch *gdbarch, int regno)
 {
   return (regno == MIPS_ZERO_REGNUM
-         || regno == mips_regnum (current_gdbarch)->fp_implementation_revision);
+         || regno == mips_regnum (gdbarch)->fp_implementation_revision);
 }
 
 /* Shared library support.  */
@@ -340,6 +310,7 @@ mipsnbsd_ilp32_fetch_link_map_offsets (void)
       lmo.r_version_offset = 0;
       lmo.r_version_size = 4;
       lmo.r_map_offset = 4;
+      lmo.r_brk_offset = 8;
       lmo.r_ldsomap_offset = -1;
 
       /* Everything we need is in the first 24 bytes.  */
@@ -367,6 +338,7 @@ mipsnbsd_lp64_fetch_link_map_offsets (void)
       lmo.r_version_offset = 0;
       lmo.r_version_size = 4;
       lmo.r_map_offset = 8;
+      lmo.r_brk_offset = 16;
       lmo.r_ldsomap_offset = -1;
 
       /* Everything we need is in the first 40 bytes.  */
@@ -404,14 +376,8 @@ mipsnbsd_init_abi (struct gdbarch_info info,
 }
 \f
 
-static enum gdb_osabi
-mipsnbsd_core_osabi_sniffer (bfd *abfd)
-{
-  if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
-    return GDB_OSABI_NETBSD_ELF;
-
-  return GDB_OSABI_UNKNOWN;
-}
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+extern initialize_file_ftype _initialize_mipsnbsd_tdep;
 
 void
 _initialize_mipsnbsd_tdep (void)