/* Target-dependent code for NetBSD/sparc64.
- Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
Based on code contributed by Wasabi Systems, 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 "frame.h"
#include "regcache.h"
#include "regset.h"
#include "symtab.h"
+#include "objfiles.h"
#include "solib-svr4.h"
#include "trad-frame.h"
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
- sparc64_supply_gregset (regset->descr, regcache, regnum, gregs);
+ sparc64_supply_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs);
}
static void
return nbsd_pc_in_sigtramp (pc, name);
}
-static struct sparc_frame_cache *
-sparc64nbsd_sigcontext_frame_cache (struct frame_info *next_frame,
- void **this_cache)
+struct trad_frame_saved_reg *
+sparc64nbsd_sigcontext_saved_regs (CORE_ADDR sigcontext_addr,
+ struct frame_info *next_frame)
{
- struct sparc_frame_cache *cache;
- CORE_ADDR addr, sigcontext_addr, sp;
- LONGEST fprs;
+ struct trad_frame_saved_reg *saved_regs;
+ CORE_ADDR addr, sp;
int regnum, delta;
- if (*this_cache)
- return *this_cache;
-
- cache = sparc_frame_cache (next_frame, this_cache);
- gdb_assert (cache == *this_cache);
+ saved_regs = trad_frame_alloc_saved_regs (next_frame);
/* The registers are saved in bits and pieces scattered all over the
place. The code below records their location on the assumption
that the part of the signal trampoline that saves the state has
been executed. */
- /* 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 = sparc64nbsd_sigtramp_start;
-
- /* 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);
- cache->base = addr;
- }
-
- cache->saved_regs = trad_frame_alloc_saved_regs (next_frame);
-
- /* We find the appropriate instance of `struct sigcontext' at a
- fixed offset in the signal frame. */
- sigcontext_addr = cache->base + BIAS + 128 + 8;
-
- cache->saved_regs[SPARC_SP_REGNUM].addr = sigcontext_addr + 8;
- cache->saved_regs[SPARC64_PC_REGNUM].addr = sigcontext_addr + 16;
- cache->saved_regs[SPARC64_NPC_REGNUM].addr = sigcontext_addr + 24;
- cache->saved_regs[SPARC64_STATE_REGNUM].addr = sigcontext_addr + 32;
- cache->saved_regs[SPARC_G1_REGNUM].addr = sigcontext_addr + 40;
- cache->saved_regs[SPARC_O0_REGNUM].addr = sigcontext_addr + 48;
+ saved_regs[SPARC_SP_REGNUM].addr = sigcontext_addr + 8;
+ saved_regs[SPARC64_PC_REGNUM].addr = sigcontext_addr + 16;
+ saved_regs[SPARC64_NPC_REGNUM].addr = sigcontext_addr + 24;
+ saved_regs[SPARC64_STATE_REGNUM].addr = sigcontext_addr + 32;
+ saved_regs[SPARC_G1_REGNUM].addr = sigcontext_addr + 40;
+ saved_regs[SPARC_O0_REGNUM].addr = sigcontext_addr + 48;
/* The remaining `global' registers and %y are saved in the `local'
registers. */
delta = SPARC_L0_REGNUM - SPARC_G0_REGNUM;
for (regnum = SPARC_G2_REGNUM; regnum <= SPARC_G7_REGNUM; regnum++)
- cache->saved_regs[regnum].realreg = regnum + delta;
- cache->saved_regs[SPARC64_Y_REGNUM].realreg = SPARC_L1_REGNUM;
+ saved_regs[regnum].realreg = regnum + delta;
+ saved_regs[SPARC64_Y_REGNUM].realreg = SPARC_L1_REGNUM;
/* The remaining `out' registers can be found in the current frame's
`in' registers. */
delta = SPARC_I0_REGNUM - SPARC_O0_REGNUM;
for (regnum = SPARC_O1_REGNUM; regnum <= SPARC_O5_REGNUM; regnum++)
- cache->saved_regs[regnum].realreg = regnum + delta;
- cache->saved_regs[SPARC_O7_REGNUM].realreg = SPARC_I7_REGNUM;
+ saved_regs[regnum].realreg = regnum + delta;
+ saved_regs[SPARC_O7_REGNUM].realreg = SPARC_I7_REGNUM;
/* The `local' and `in' registers have been saved in the register
save area. */
- addr = cache->saved_regs[SPARC_SP_REGNUM].addr;
+ addr = saved_regs[SPARC_SP_REGNUM].addr;
sp = get_frame_memory_unsigned (next_frame, addr, 8);
for (regnum = SPARC_L0_REGNUM, addr = sp + BIAS;
regnum <= SPARC_I7_REGNUM; regnum++, addr += 8)
- cache->saved_regs[regnum].addr = addr;
+ saved_regs[regnum].addr = addr;
+
+ /* Handle StackGhost. */
+ {
+ ULONGEST wcookie = sparc_fetch_wcookie ();
+
+ if (wcookie != 0)
+ {
+ ULONGEST i7;
+
+ addr = saved_regs[SPARC_I7_REGNUM].addr;
+ i7 = get_frame_memory_unsigned (next_frame, addr, 8);
+ trad_frame_set_value (saved_regs, SPARC_I7_REGNUM, i7 ^ wcookie);
+ }
+ }
/* TODO: Handle the floating-point registers. */
+ return saved_regs;
+}
+
+static struct sparc_frame_cache *
+sparc64nbsd_sigcontext_frame_cache (struct frame_info *next_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);
+ 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 = sparc64nbsd_sigtramp_start;
+
+ /* 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);
+ if (addr & 1)
+ addr += BIAS;
+ cache->base = addr;
+ }
+
+ /* We find the appropriate instance of `struct sigcontext' at a
+ fixed offset in the signal frame. */
+ addr = cache->base + 128 + 8;
+ cache->saved_regs = sparc64nbsd_sigcontext_saved_regs (addr, next_frame);
+
return 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 =
sparc64nbsd_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 sparc64nbsd_sigcontext_frame_unwind =
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- tdep->gregset = XMALLOC (struct regset);
- tdep->gregset->descr = &sparc64nbsd_gregset;
- tdep->gregset->supply_regset = sparc64nbsd_supply_gregset;
+ tdep->gregset = regset_alloc (gdbarch, sparc64nbsd_supply_gregset, NULL);
tdep->sizeof_gregset = 160;
- tdep->fpregset = XMALLOC (struct regset);
- tdep->fpregset->supply_regset = sparc64nbsd_supply_fpregset;
+ tdep->fpregset = regset_alloc (gdbarch, sparc64nbsd_supply_fpregset, NULL);
tdep->sizeof_fpregset = 272;
- set_gdbarch_pc_in_sigtramp (gdbarch, sparc64nbsd_pc_in_sigtramp);
+ /* Make sure we can single-step "new" syscalls. */
+ tdep->step_trap = sparcnbsd_step_trap;
+
frame_unwind_append_sniffer (gdbarch, sparc64nbsd_sigtramp_frame_sniffer);
sparc64_init_abi (info, gdbarch);
+ /* NetBSD/sparc64 has SVR4-style shared libraries. */
+ set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
set_solib_svr4_fetch_link_map_offsets
- (gdbarch, nbsd_lp64_solib_svr4_fetch_link_map_offsets);
+ (gdbarch, svr4_lp64_fetch_link_map_offsets);
}
-
\f
+
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_sparc64nbsd_tdep (void);
{
gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
GDB_OSABI_NETBSD_ELF, sparc64nbsd_init_abi);
- gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
- GDB_OSABI_OPENBSD_ELF, sparc64nbsd_init_abi);
}
projects / deliverable / binutils-gdb.git / blobdiff