/* Target-dependent code for OpenBSD/sparc.
- Copyright 2004 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of GDB.
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 "floatformat.h"
#include "frame.h"
#include "frame-unwind.h"
+#include "gdbcore.h"
#include "osabi.h"
-#include "solib-svr4.h"
+#include "regcache.h"
#include "symtab.h"
#include "trad-frame.h"
#include "gdb_assert.h"
+#include "obsd-tdep.h"
#include "sparc-tdep.h"
-#include "nbsd-tdep.h"
+#include "solib-svr4.h"
+#include "bsd-uthread.h"
/* Signal trampolines. */
detecting it won't work.
The signal trampoline will be mapped at an address that is page
- aligned. We recognize the signal trampoline by the looking for the
+ aligned. We recognize the signal trampoline by looking for the
sigreturn system call. */
static const int sparc32obsd_page_size = 4096;
void **this_cache,
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 =
sparc32obsd_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 sparc32obsd_frame_unwind =
}
\f
+/* Offset wthin the thread structure where we can find %fp and %i7. */
+#define SPARC32OBSD_UTHREAD_FP_OFFSET 128
+#define SPARC32OBSD_UTHREAD_PC_OFFSET 132
+
+static void
+sparc32obsd_supply_uthread (struct regcache *regcache,
+ int regnum, CORE_ADDR addr)
+{
+ CORE_ADDR fp, fp_addr = addr + SPARC32OBSD_UTHREAD_FP_OFFSET;
+ gdb_byte buf[4];
+
+ gdb_assert (regnum >= -1);
+
+ fp = read_memory_unsigned_integer (fp_addr, 4);
+ if (regnum == SPARC_SP_REGNUM || regnum == -1)
+ {
+ store_unsigned_integer (buf, 4, fp);
+ regcache_raw_supply (regcache, SPARC_SP_REGNUM, buf);
+
+ if (regnum == SPARC_SP_REGNUM)
+ return;
+ }
+
+ if (regnum == SPARC32_PC_REGNUM || regnum == SPARC32_NPC_REGNUM
+ || regnum == -1)
+ {
+ CORE_ADDR i7, i7_addr = addr + SPARC32OBSD_UTHREAD_PC_OFFSET;
+
+ i7 = read_memory_unsigned_integer (i7_addr, 4);
+ if (regnum == SPARC32_PC_REGNUM || regnum == -1)
+ {
+ store_unsigned_integer (buf, 4, i7 + 8);
+ regcache_raw_supply (regcache, SPARC32_PC_REGNUM, buf);
+ }
+ if (regnum == SPARC32_NPC_REGNUM || regnum == -1)
+ {
+ store_unsigned_integer (buf, 4, i7 + 12);
+ regcache_raw_supply (regcache, SPARC32_NPC_REGNUM, buf);
+ }
+
+ if (regnum == SPARC32_PC_REGNUM || regnum == SPARC32_NPC_REGNUM)
+ return;
+ }
+
+ sparc_supply_rwindow (regcache, fp, regnum);
+}
+
+static void
+sparc32obsd_collect_uthread(const struct regcache *regcache,
+ int regnum, CORE_ADDR addr)
+{
+ CORE_ADDR sp;
+ gdb_byte buf[4];
+
+ gdb_assert (regnum >= -1);
+
+ if (regnum == SPARC_SP_REGNUM || regnum == -1)
+ {
+ CORE_ADDR fp_addr = addr + SPARC32OBSD_UTHREAD_FP_OFFSET;
+
+ regcache_raw_collect (regcache, SPARC_SP_REGNUM, buf);
+ write_memory (fp_addr,buf, 4);
+ }
+
+ if (regnum == SPARC32_PC_REGNUM || regnum == -1)
+ {
+ CORE_ADDR i7, i7_addr = addr + SPARC32OBSD_UTHREAD_PC_OFFSET;
+
+ regcache_raw_collect (regcache, SPARC32_PC_REGNUM, buf);
+ i7 = extract_unsigned_integer (buf, 4) - 8;
+ write_memory_unsigned_integer (i7_addr, 4, i7);
+
+ if (regnum == SPARC32_PC_REGNUM)
+ return;
+ }
+
+ regcache_raw_collect (regcache, SPARC_SP_REGNUM, buf);
+ sp = extract_unsigned_integer (buf, 4);
+ sparc_collect_rwindow (regcache, sp, regnum);
+}
+\f
+
static void
sparc32obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- /* OpenBSD 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);
+ /* OpenBSD/sparc is very similar to NetBSD/sparc ELF. */
+ sparc32nbsd_elf_init_abi (info, gdbarch);
+
+ set_gdbarch_skip_solib_resolver (gdbarch, obsd_skip_solib_resolver);
- set_gdbarch_deprecated_pc_in_sigtramp (gdbarch, sparc32obsd_pc_in_sigtramp);
frame_unwind_append_sniffer (gdbarch, sparc32obsd_sigtramp_frame_sniffer);
- set_solib_svr4_fetch_link_map_offsets
- (gdbarch, nbsd_ilp32_solib_svr4_fetch_link_map_offsets);
+ /* OpenBSD provides a user-level threads implementation. */
+ bsd_uthread_set_supply_uthread (gdbarch, sparc32obsd_supply_uthread);
+ bsd_uthread_set_collect_uthread (gdbarch, sparc32obsd_collect_uthread);
}
\f