/* Target-dependent code for OpenBSD/sparc.
- Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+ Free Software Foundation, Inc.
This file is part of GDB.
}
static struct sparc_frame_cache *
-sparc32obsd_frame_cache (struct frame_info *next_frame, void **this_cache)
+sparc32obsd_sigtramp_frame_cache (struct frame_info *this_frame,
+ void **this_cache)
{
struct sparc_frame_cache *cache;
CORE_ADDR addr;
if (*this_cache)
return *this_cache;
- cache = sparc_frame_cache (next_frame, this_cache);
+ cache = sparc_frame_cache (this_frame, this_cache);
gdb_assert (cache == *this_cache);
/* If we couldn't find the frame's function, we're probably dealing
with an on-stack signal trampoline. */
if (cache->pc == 0)
{
- cache->pc = frame_pc_unwind (next_frame);
+ cache->pc = get_frame_pc (this_frame);
cache->pc &= ~(sparc32obsd_page_size - 1);
/* Since we couldn't find the frame's function, the cache was
initialized under the assumption that we're frameless. */
- cache->frameless_p = 0;
- addr = frame_unwind_register_unsigned (next_frame, SPARC_FP_REGNUM);
+ sparc_record_save_insn (cache);
+ addr = get_frame_register_unsigned (this_frame, SPARC_FP_REGNUM);
cache->base = addr;
}
- cache->saved_regs = sparc32nbsd_sigcontext_saved_regs (next_frame);
+ cache->saved_regs = sparc32nbsd_sigcontext_saved_regs (this_frame);
return cache;
}
static void
-sparc32obsd_frame_this_id (struct frame_info *next_frame, void **this_cache,
- struct frame_id *this_id)
+sparc32obsd_sigtramp_frame_this_id (struct frame_info *this_frame,
+ void **this_cache,
+ struct frame_id *this_id)
{
struct sparc_frame_cache *cache =
- sparc32obsd_frame_cache (next_frame, this_cache);
+ sparc32obsd_sigtramp_frame_cache (this_frame, this_cache);
(*this_id) = frame_id_build (cache->base, cache->pc);
}
-static void
-sparc32obsd_frame_prev_register (struct frame_info *next_frame,
- void **this_cache,
- int regnum, int *optimizedp,
- enum lval_type *lvalp, CORE_ADDR *addrp,
- int *realnump, gdb_byte *valuep)
+static struct value *
+sparc32obsd_sigtramp_frame_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
{
struct sparc_frame_cache *cache =
- sparc32obsd_frame_cache (next_frame, this_cache);
+ sparc32obsd_sigtramp_frame_cache (this_frame, this_cache);
- trad_frame_get_prev_register (next_frame, cache->saved_regs, regnum,
- optimizedp, lvalp, addrp, realnump, valuep);
+ return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum);
}
-static const struct frame_unwind sparc32obsd_frame_unwind =
-{
- SIGTRAMP_FRAME,
- sparc32obsd_frame_this_id,
- sparc32obsd_frame_prev_register
-};
-
-static const struct frame_unwind *
-sparc32obsd_sigtramp_frame_sniffer (struct frame_info *next_frame)
+static int
+sparc32obsd_sigtramp_frame_sniffer (const struct frame_unwind *self,
+ struct frame_info *this_frame,
+ void **this_cache)
{
- CORE_ADDR pc = frame_pc_unwind (next_frame);
+ CORE_ADDR pc = get_frame_pc (this_frame);
char *name;
find_pc_partial_function (pc, &name, NULL, NULL);
if (sparc32obsd_pc_in_sigtramp (pc, name))
- return &sparc32obsd_frame_unwind;
+ return 1;
- return NULL;
+ return 0;
}
+static const struct frame_unwind sparc32obsd_sigtramp_frame_unwind =
+{
+ SIGTRAMP_FRAME,
+ default_frame_unwind_stop_reason,
+ sparc32obsd_sigtramp_frame_this_id,
+ sparc32obsd_sigtramp_frame_prev_register,
+ NULL,
+ sparc32obsd_sigtramp_frame_sniffer
+};
+
\f
/* Offset wthin the thread structure where we can find %fp and %i7. */
sparc32obsd_supply_uthread (struct regcache *regcache,
int regnum, CORE_ADDR addr)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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);
+ fp = read_memory_unsigned_integer (fp_addr, 4, byte_order);
if (regnum == SPARC_SP_REGNUM || regnum == -1)
{
- store_unsigned_integer (buf, 4, fp);
+ store_unsigned_integer (buf, 4, byte_order, fp);
regcache_raw_supply (regcache, SPARC_SP_REGNUM, buf);
if (regnum == SPARC_SP_REGNUM)
{
CORE_ADDR i7, i7_addr = addr + SPARC32OBSD_UTHREAD_PC_OFFSET;
- i7 = read_memory_unsigned_integer (i7_addr, 4);
+ i7 = read_memory_unsigned_integer (i7_addr, 4, byte_order);
if (regnum == SPARC32_PC_REGNUM || regnum == -1)
{
- store_unsigned_integer (buf, 4, i7 + 8);
+ store_unsigned_integer (buf, 4, byte_order, i7 + 8);
regcache_raw_supply (regcache, SPARC32_PC_REGNUM, buf);
}
if (regnum == SPARC32_NPC_REGNUM || regnum == -1)
{
- store_unsigned_integer (buf, 4, i7 + 12);
+ store_unsigned_integer (buf, 4, byte_order, i7 + 12);
regcache_raw_supply (regcache, SPARC32_NPC_REGNUM, buf);
}
sparc32obsd_collect_uthread(const struct regcache *regcache,
int regnum, CORE_ADDR addr)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR sp;
gdb_byte buf[4];
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);
+ i7 = extract_unsigned_integer (buf, 4, byte_order) - 8;
+ write_memory_unsigned_integer (i7_addr, 4, byte_order, i7);
if (regnum == SPARC32_PC_REGNUM)
return;
}
regcache_raw_collect (regcache, SPARC_SP_REGNUM, buf);
- sp = extract_unsigned_integer (buf, 4);
+ sp = extract_unsigned_integer (buf, 4, byte_order);
sparc_collect_rwindow (regcache, sp, regnum);
}
\f
set_gdbarch_skip_solib_resolver (gdbarch, obsd_skip_solib_resolver);
- frame_unwind_append_sniffer (gdbarch, sparc32obsd_sigtramp_frame_sniffer);
+ frame_unwind_append_unwinder (gdbarch, &sparc32obsd_sigtramp_frame_unwind);
/* OpenBSD provides a user-level threads implementation. */
bsd_uthread_set_supply_uthread (gdbarch, sparc32obsd_supply_uthread);