/* Target-dependent code for NetBSD/sparc64.
- Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2002-2015 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 "regcache.h"
#include "regset.h"
#include "symtab.h"
+#include "objfiles.h"
#include "solib-svr4.h"
#include "trad-frame.h"
-#include "gdb_assert.h"
-#include "gdb_string.h"
-
#include "sparc64-tdep.h"
#include "nbsd-tdep.h"
/* From <machine/reg.h>. */
-const struct sparc_gregset sparc64nbsd_gregset =
+const struct sparc_gregmap sparc64nbsd_gregmap =
{
0 * 8, /* "tstate" */
1 * 8, /* %pc */
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
- sparc64_supply_gregset (regset->descr, regcache, regnum, gregs);
+ sparc64_supply_gregset (&sparc64nbsd_gregmap, regcache, regnum, gregs);
}
static void
struct regcache *regcache,
int regnum, const void *fpregs, size_t len)
{
- sparc64_supply_fpregset (regcache, regnum, fpregs);
+ sparc64_supply_fpregset (&sparc64_bsd_fpregmap, regcache, regnum, fpregs);
}
\f
static const CORE_ADDR sparc64nbsd_sigtramp_end = 0xffffffffffffe000ULL;
static int
-sparc64nbsd_pc_in_sigtramp (CORE_ADDR pc, char *name)
+sparc64nbsd_pc_in_sigtramp (CORE_ADDR pc, const char *name)
{
if (pc >= sparc64nbsd_sigtramp_start && pc < sparc64nbsd_sigtramp_end)
return 1;
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 *this_frame)
{
- struct sparc_frame_cache *cache;
- CORE_ADDR addr, sigcontext_addr, sp;
- LONGEST fprs;
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ 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 (this_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;
- sp = get_frame_memory_unsigned (next_frame, addr, 8);
+ addr = saved_regs[SPARC_SP_REGNUM].addr;
+ sp = get_frame_memory_unsigned (this_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 (gdbarch);
+
+ if (wcookie != 0)
+ {
+ ULONGEST i7;
+
+ addr = saved_regs[SPARC_I7_REGNUM].addr;
+ i7 = get_frame_memory_unsigned (this_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 *this_frame,
+ void **this_cache)
+{
+ struct sparc_frame_cache *cache;
+ CORE_ADDR addr;
+
+ if (*this_cache)
+ return (struct sparc_frame_cache *) *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 = sparc64nbsd_sigtramp_start;
+
+ /* Since we couldn't find the frame's function, the cache was
+ initialized under the assumption that we're frameless. */
+ sparc_record_save_insn (cache);
+ addr = get_frame_register_unsigned (this_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, this_frame);
+
return cache;
}
static void
-sparc64nbsd_sigcontext_frame_this_id (struct frame_info *next_frame,
+sparc64nbsd_sigcontext_frame_this_id (struct frame_info *this_frame,
void **this_cache,
struct frame_id *this_id)
{
struct sparc_frame_cache *cache =
- sparc64nbsd_sigcontext_frame_cache (next_frame, this_cache);
+ sparc64nbsd_sigcontext_frame_cache (this_frame, this_cache);
(*this_id) = frame_id_build (cache->base, cache->pc);
}
-static void
-sparc64nbsd_sigcontext_frame_prev_register (struct frame_info *next_frame,
- void **this_cache,
- int regnum, int *optimizedp,
- enum lval_type *lvalp,
- CORE_ADDR *addrp,
- int *realnump, void *valuep)
+static struct value *
+sparc64nbsd_sigcontext_frame_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
{
struct sparc_frame_cache *cache =
- sparc64nbsd_sigcontext_frame_cache (next_frame, this_cache);
+ sparc64nbsd_sigcontext_frame_cache (this_frame, this_cache);
- trad_frame_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 sparc64nbsd_sigcontext_frame_unwind =
-{
- SIGTRAMP_FRAME,
- sparc64nbsd_sigcontext_frame_this_id,
- sparc64nbsd_sigcontext_frame_prev_register
-};
-
-static const struct frame_unwind *
-sparc64nbsd_sigtramp_frame_sniffer (struct frame_info *next_frame)
+static int
+sparc64nbsd_sigtramp_frame_sniffer (const struct frame_unwind *self,
+ struct frame_info *this_frame,
+ void **this_cache)
{
- CORE_ADDR pc = frame_pc_unwind (next_frame);
- char *name;
+ CORE_ADDR pc = get_frame_pc (this_frame);
+ const char *name;
find_pc_partial_function (pc, &name, NULL, NULL);
if (sparc64nbsd_pc_in_sigtramp (pc, name))
{
- if (name == NULL || strncmp (name, "__sigtramp_sigcontext", 21))
- return &sparc64nbsd_sigcontext_frame_unwind;
+ if (name == NULL || !startswith (name, "__sigtramp_sigcontext"))
+ return 1;
}
- return NULL;
+ return 0;
}
+
+static const struct frame_unwind sparc64nbsd_sigcontext_frame_unwind =
+{
+ SIGTRAMP_FRAME,
+ default_frame_unwind_stop_reason,
+ sparc64nbsd_sigcontext_frame_this_id,
+ sparc64nbsd_sigcontext_frame_prev_register,
+ NULL,
+ sparc64nbsd_sigtramp_frame_sniffer
+};
\f
+static const struct regset sparc64nbsd_gregset =
+ {
+ NULL, sparc64nbsd_supply_gregset, NULL
+ };
+
+static const struct regset sparc64nbsd_fpregset =
+ {
+ NULL, sparc64nbsd_supply_fpregset, NULL
+ };
+
static void
sparc64nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
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 = &sparc64nbsd_gregset;
tdep->sizeof_gregset = 160;
- tdep->fpregset = XMALLOC (struct regset);
- tdep->fpregset->supply_regset = sparc64nbsd_supply_fpregset;
+ tdep->fpregset = &sparc64nbsd_fpregset;
tdep->sizeof_fpregset = 272;
- set_gdbarch_pc_in_sigtramp (gdbarch, sparc64nbsd_pc_in_sigtramp);
- frame_unwind_append_sniffer (gdbarch, sparc64nbsd_sigtramp_frame_sniffer);
+ /* Make sure we can single-step "new" syscalls. */
+ tdep->step_trap = sparcnbsd_step_trap;
+
+ frame_unwind_append_unwinder (gdbarch, &sparc64nbsd_sigcontext_frame_unwind);
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);
projects / deliverable / binutils-gdb.git / blobdiff