/* Target-dependent code for the IA-64 for GDB, the GNU debugger.
- Copyright 2000, 2004
- Free Software Foundation, Inc.
+
+ Copyright (C) 2000, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+#include "ia64-tdep.h"
#include "arch-utils.h"
#include "gdbcore.h"
+#include "regcache.h"
+#include "osabi.h"
+#include "solib-svr4.h"
+#include "symtab.h"
/* The sigtramp code is in a non-readable (executable-only) region
of memory called the ``gate page''. The addresses in question
/* Offset to sigcontext structure from frame of handler */
#define IA64_LINUX_SIGCONTEXT_OFFSET 192
-int
-ia64_linux_in_sigtramp (CORE_ADDR pc, char *func_name)
+static int
+ia64_linux_pc_in_sigtramp (CORE_ADDR pc)
{
return (pc >= (CORE_ADDR) GATE_AREA_START && pc < (CORE_ADDR) GATE_AREA_END);
}
found. 0 is returned for registers which aren't stored in the the
sigcontext structure. */
-CORE_ADDR
+static CORE_ADDR
ia64_linux_sigcontext_register_address (CORE_ADDR sp, int regno)
{
char buf[8];
return 0;
}
}
+
+static void
+ia64_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
+{
+ ia64_write_pc (regcache, pc);
+
+ /* We must be careful with modifying the instruction-pointer: if we
+ just interrupt a system call, the kernel would ordinarily try to
+ restart it when we resume the inferior, which typically results
+ in SIGSEGV or SIGILL. We prevent this by clearing r10, which
+ will tell the kernel that r8 does NOT contain a valid error code
+ and hence it will skip system-call restart.
+
+ The clearing of r10 is safe as long as ia64_write_pc() is only
+ called as part of setting up an inferior call. */
+ regcache_cooked_write_unsigned (regcache, IA64_GR10_REGNUM, 0);
+}
+
+static void
+ia64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ /* Set the method of obtaining the sigcontext addresses at which
+ registers are saved. */
+ tdep->sigcontext_register_address = ia64_linux_sigcontext_register_address;
+
+ /* Set the pc_in_sigtramp method. */
+ tdep->pc_in_sigtramp = ia64_linux_pc_in_sigtramp;
+
+ set_gdbarch_write_pc (gdbarch, ia64_linux_write_pc);
+
+ set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
+
+ set_solib_svr4_fetch_link_map_offsets
+ (gdbarch, svr4_lp64_fetch_link_map_offsets);
+
+ /* Enable TLS support. */
+ set_gdbarch_fetch_tls_load_module_address (gdbarch,
+ svr4_fetch_objfile_link_map);
+}
+
+void
+_initialize_ia64_linux_tdep (void)
+{
+ gdbarch_register_osabi (bfd_arch_ia64, 0, GDB_OSABI_LINUX,
+ ia64_linux_init_abi);
+}