/* Target-dependent code for NetBSD/sparc64.
- Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008
+ Free Software Foundation, Inc.
Based on code 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 "frame.h"
#include "gdbcore.h"
#include "osabi.h"
#include "regcache.h"
+#include "regset.h"
#include "symtab.h"
+#include "objfiles.h"
#include "solib-svr4.h"
#include "trad-frame.h"
-1, /* %l0 */
4 /* sizeof (%y) */
};
-
-/* Size of `struct reg' and `struct fpreg'. */
-static const int sparc64nbsd_sizeof_struct_reg = 160;
-static const int sparc64nbsd_sizeof_struct_fpreg = 272;
+\f
static void
-fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
- CORE_ADDR ignore)
+sparc64nbsd_supply_gregset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *gregs, size_t len)
{
- switch (which)
- {
- case 0: /* Integer registers */
- if (core_reg_size != sparc64nbsd_sizeof_struct_reg)
- warning ("Wrong size register set in core file.");
- else
- sparc64_supply_gregset (&sparc64nbsd_gregset, current_regcache,
- -1, core_reg_sect);
- break;
-
- case 2: /* Floating pointer registers */
- if (core_reg_size != sparc64nbsd_sizeof_struct_fpreg)
- warning ("Wrong size FP register set in core file.");
- else
- sparc64_supply_fpregset (current_regcache, -1, core_reg_sect);
- break;
-
- default:
- /* Don't know what kind of register request this is; just ignore it. */
- break;
- }
+ sparc64_supply_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs);
}
-static struct core_fns sparc64nbsd_core_fns =
+static void
+sparc64nbsd_supply_fpregset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *fpregs, size_t len)
{
- bfd_target_elf_flavour, /* core_flavour */
- default_check_format, /* check_format */
- default_core_sniffer, /* core_sniffer */
- fetch_core_registers, /* core_read_registers */
- NULL
-};
+ sparc64_supply_fpregset (regcache, regnum, fpregs);
+}
\f
+
/* Signal trampolines. */
/* The following variables describe the location of an on-stack signal
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 =
static void
sparc64nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
- set_gdbarch_pc_in_sigtramp (gdbarch, sparc64nbsd_pc_in_sigtramp);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ tdep->gregset = regset_alloc (gdbarch, sparc64nbsd_supply_gregset, NULL);
+ tdep->sizeof_gregset = 160;
+
+ tdep->fpregset = regset_alloc (gdbarch, sparc64nbsd_supply_fpregset, NULL);
+ tdep->sizeof_fpregset = 272;
+
+ /* 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);
-
- add_core_fns (&sparc64nbsd_core_fns);
}
projects / deliverable / binutils-gdb.git / blobdiff