2007-06-28 Michael Snyder <msnyder@access-company.com>

[deliverable/binutils-gdb.git] / gdb / alpha-linux-tdep.c

diff --git a/gdb/alpha-linux-tdep.c b/gdb/alpha-linux-tdep.c
index e89a0fa5fe17bf7391f665d75cda6b823394454f..4ce4258ec46354efa802fadb227216a0b8bfa9cc 100644 (file)
--- a/gdb/alpha-linux-tdep.c
+++ b/gdb/alpha-linux-tdep.c
@@ -1,5 +1,5 @@
 /* Target-dependent code for GNU/Linux on Alpha.
-   Copyright 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -15,15 +15,18 @@
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
 
 #include "defs.h"
 #include "frame.h"
-#include "gdbcore.h"
-#include "value.h"
-#include "osabi.h"
 #include "gdb_assert.h"
+#include "gdb_string.h"
+#include "osabi.h"
+#include "solib-svr4.h"
+#include "symtab.h"
+#include "regset.h"
+#include "regcache.h"
 
 #include "alpha-tdep.h"
 
@@ -125,21 +128,110 @@ alpha_linux_sigcontext_addr (struct frame_info *next_frame)
   return sp;
 }
 
+/* Supply register REGNUM from the buffer specified by GREGS and LEN
+   in the general-purpose register set REGSET to register cache
+   REGCACHE.  If REGNUM is -1, do this for all registers in REGSET.  */
+
+static void
+alpha_linux_supply_gregset (const struct regset *regset,
+                           struct regcache *regcache,
+                           int regnum, const void *gregs, size_t len)
+{
+  const gdb_byte *regs = gregs;
+  int i;
+  gdb_assert (len >= 32 * 8);
+
+  for (i = 0; i < ALPHA_ZERO_REGNUM; i++)
+    {
+      if (regnum == i || regnum == -1)
+       regcache_raw_supply (regcache, i, regs + i * 8);
+    }
+
+  if (regnum == ALPHA_PC_REGNUM || regnum == -1)
+    regcache_raw_supply (regcache, ALPHA_PC_REGNUM, regs + 31 * 8);
+
+  if (regnum == ALPHA_UNIQUE_REGNUM || regnum == -1)
+    regcache_raw_supply (regcache, ALPHA_UNIQUE_REGNUM,
+                        len >= 33 * 8 ? regs + 32 * 8 : NULL);
+}
+
+/* Supply register REGNUM from the buffer specified by FPREGS and LEN
+   in the floating-point register set REGSET to register cache
+   REGCACHE.  If REGNUM is -1, do this for all registers in REGSET.  */
+
+static void
+alpha_linux_supply_fpregset (const struct regset *regset,
+                            struct regcache *regcache,
+                            int regnum, const void *fpregs, size_t len)
+{
+  const gdb_byte *regs = fpregs;
+  int i;
+  gdb_assert (len >= 32 * 8);
+
+  for (i = ALPHA_FP0_REGNUM; i < ALPHA_FP0_REGNUM + 31; i++)
+    {
+      if (regnum == i || regnum == -1)
+       regcache_raw_supply (regcache, i, regs + (i - ALPHA_FP0_REGNUM) * 8);
+    }
+
+  if (regnum == ALPHA_FPCR_REGNUM || regnum == -1)
+    regcache_raw_supply (regcache, ALPHA_FPCR_REGNUM, regs + 31 * 8);
+}
+
+static struct regset alpha_linux_gregset =
+{
+  NULL,
+  alpha_linux_supply_gregset
+};
+
+static struct regset alpha_linux_fpregset =
+{
+  NULL,
+  alpha_linux_supply_fpregset
+};
+
+/* Return the appropriate register set for the core section identified
+   by SECT_NAME and SECT_SIZE.  */
+
+const struct regset *
+alpha_linux_regset_from_core_section (struct gdbarch *gdbarch,
+                                     const char *sect_name, size_t sect_size)
+{
+  if (strcmp (sect_name, ".reg") == 0 && sect_size >= 32 * 8)
+    return &alpha_linux_gregset;
+
+  if (strcmp (sect_name, ".reg2") == 0 && sect_size >= 32 * 8)
+    return &alpha_linux_fpregset;
+
+  return NULL;
+}
+
 static void
-alpha_linux_init_abi (struct gdbarch_info info,
-                      struct gdbarch *gdbarch)
+alpha_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
   struct gdbarch_tdep *tdep;
 
-  alpha_mdebug_init_abi (info, gdbarch);
+  /* Hook into the DWARF CFI frame unwinder.  */
+  alpha_dwarf2_init_abi (info, gdbarch);
 
-  set_gdbarch_pc_in_sigtramp (gdbarch, alpha_linux_pc_in_sigtramp);
+  /* Hook into the MDEBUG frame unwinder.  */
+  alpha_mdebug_init_abi (info, gdbarch);
 
   tdep = gdbarch_tdep (gdbarch);
   tdep->dynamic_sigtramp_offset = alpha_linux_sigtramp_offset;
   tdep->sigcontext_addr = alpha_linux_sigcontext_addr;
+  tdep->pc_in_sigtramp = alpha_linux_pc_in_sigtramp;
   tdep->jb_pc = 2;
   tdep->jb_elt_size = 8;
+
+  set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
+
+  /* Enable TLS support.  */
+  set_gdbarch_fetch_tls_load_module_address (gdbarch,
+                                             svr4_fetch_objfile_link_map);
+
+  set_gdbarch_regset_from_core_section
+    (gdbarch, alpha_linux_regset_from_core_section);
 }
 
 void