/* Target-dependent code for NetBSD/sparc.
- Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2006, 2007, 2008
+ Free Software Foundation, Inc.
Contributed by Wasabi Systems, 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 "floatformat.h"
#include "frame.h"
#include "frame-unwind.h"
#include "gdbcore.h"
+#include "gdbtypes.h"
#include "osabi.h"
#include "regcache.h"
#include "regset.h"
#include "sparc-tdep.h"
#include "nbsd-tdep.h"
+/* Macros to extract fields from SPARC instructions. */
+#define X_RS1(i) (((i) >> 14) & 0x1f)
+#define X_RS2(i) ((i) & 0x1f)
+#define X_I(i) (((i) >> 13) & 1)
+
const struct sparc_gregset sparc32nbsd_gregset =
{
0 * 4, /* %psr */
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
- sparc32_supply_gregset (regset->descr, regcache, regnum, gregs);
+ sparc32_supply_gregset (&sparc32nbsd_gregset, regcache, regnum, gregs);
/* Traditional NetBSD core files don't use multiple register sets.
Instead, the general-purpose and floating-point registers are
int regnum, int *optimizedp,
enum lval_type *lvalp,
CORE_ADDR *addrp,
- int *realnump, void *valuep)
+ int *realnump, gdb_byte *valuep)
{
struct sparc_frame_cache *cache =
sparc32nbsd_sigcontext_frame_cache (next_frame, this_cache);
- trad_frame_prev_register (next_frame, cache->saved_regs, regnum,
- optimizedp, lvalp, addrp, realnump, valuep);
+ trad_frame_get_prev_register (next_frame, cache->saved_regs, regnum,
+ optimizedp, lvalp, addrp, realnump, valuep);
}
static const struct frame_unwind sparc32nbsd_sigcontext_frame_unwind =
return NULL;
}
\f
+/* Return the address of a system call's alternative return
+ address. */
-/* Return non-zero if we are in a shared library trampoline code stub. */
-
-static int
-sparcnbsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name)
+CORE_ADDR
+sparcnbsd_step_trap (struct frame_info *frame, unsigned long insn)
{
- return (name && !strcmp (name, "_DYNAMIC"));
+ if ((X_I (insn) == 0 && X_RS1 (insn) == 0 && X_RS2 (insn) == 0)
+ || (X_I (insn) == 1 && X_RS1 (insn) == 0 && (insn & 0x7f) == 0))
+ {
+ /* "New" system call. */
+ ULONGEST number = get_frame_register_unsigned (frame, SPARC_G1_REGNUM);
+
+ if (number & 0x400)
+ return get_frame_register_unsigned (frame, SPARC_G2_REGNUM);
+ if (number & 0x800)
+ return get_frame_register_unsigned (frame, SPARC_G7_REGNUM);
+ }
+
+ return 0;
}
+\f
static void
sparc32nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
/* NetBSD doesn't support the 128-bit `long double' from the psABI. */
set_gdbarch_long_double_bit (gdbarch, 64);
- set_gdbarch_long_double_format (gdbarch, &floatformat_ieee_double_big);
+ set_gdbarch_long_double_format (gdbarch, floatformats_ieee_double);
- tdep->gregset = XMALLOC (struct regset);
- tdep->gregset->descr = &sparc32nbsd_gregset;
- tdep->gregset->supply_regset = sparc32nbsd_supply_gregset;
+ tdep->gregset = regset_alloc (gdbarch, sparc32nbsd_supply_gregset, NULL);
tdep->sizeof_gregset = 20 * 4;
- tdep->fpregset = XMALLOC (struct regset);
- tdep->fpregset->supply_regset = sparc32nbsd_supply_fpregset;
+ tdep->fpregset = regset_alloc (gdbarch, sparc32nbsd_supply_fpregset, NULL);
tdep->sizeof_fpregset = 33 * 4;
- set_gdbarch_pc_in_sigtramp (gdbarch, sparc32nbsd_pc_in_sigtramp);
+ /* Make sure we can single-step "new" syscalls. */
+ tdep->step_trap = sparcnbsd_step_trap;
+
frame_unwind_append_sniffer (gdbarch, sparc32nbsd_sigtramp_frame_sniffer);
}
sparc32nbsd_aout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
sparc32nbsd_init_abi (info, gdbarch);
-
- set_gdbarch_in_solib_call_trampoline
- (gdbarch, sparcnbsd_aout_in_solib_call_trampoline);
}
-static void
+void
sparc32nbsd_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
sparc32nbsd_init_abi (info, gdbarch);
set_solib_svr4_fetch_link_map_offsets
- (gdbarch, nbsd_ilp32_solib_svr4_fetch_link_map_offsets);
+ (gdbarch, svr4_ilp32_fetch_link_map_offsets);
}
static enum gdb_osabi
gdbarch_register_osabi_sniffer (bfd_arch_sparc, bfd_target_aout_flavour,
sparcnbsd_aout_osabi_sniffer);
- /* BFD doesn't set the architecture for NetBSD style a.out core
- files. */
- gdbarch_register_osabi_sniffer (bfd_arch_unknown, bfd_target_unknown_flavour,
+ /* BFD doesn't set a flavour for NetBSD style a.out core files. */
+ gdbarch_register_osabi_sniffer (bfd_arch_sparc, bfd_target_unknown_flavour,
sparcnbsd_core_osabi_sniffer);
gdbarch_register_osabi (bfd_arch_sparc, 0, GDB_OSABI_NETBSD_AOUT,
projects / deliverable / binutils-gdb.git / blobdiff