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/* Target-dependent code for NetBSD/hppa
Copyright (C) 2008-2012 Free Software Foundation, 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 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "osabi.h"
#include "regcache.h"
#include "regset.h"
#include "trad-frame.h"
#include "tramp-frame.h"
#include "gdb_assert.h"
#include "gdb_string.h"
#include "hppa-tdep.h"
#include "hppabsd-tdep.h"
/* From <machine/mcontext.h>. */
static int hppanbsd_mc_reg_offset[] =
{
/* r0 ... r31 */
-1, 1 * 4, 2 * 4, 3 * 4,
4 * 4, 5 * 4, 6 * 4, 7 * 4,
8 * 4, 9 * 4, 10 * 4, 11 * 4,
12 * 4, 13 * 4, 14 * 4, 15 * 4,
16 * 4, 17 * 4, 18 * 4, 19 * 4,
20 * 4, 21 * 4, 22 * 4, 23 * 4,
24 * 4, 25 * 4, 26 * 4, 27 * 4,
28 * 4, 29 * 4, 30 * 4, 31 * 4,
32 * 4, /* HPPA_SAR_REGNUM */
35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
-1, /* HPPA_EIEM_REGNUM */
-1, /* HPPA_IIR_REGNUM */
-1, /* HPPA_ISR_REGNUM */
-1, /* HPPA_IOR_REGNUM */
0 * 4, /* HPPA_IPSW_REGNUM */
-1, /* spare? */
41 * 4, /* HPPA_SR4_REGNUM */
37 * 4, /* sr0 */
38 * 4, /* sr1 */
39 * 4, /* sr2 */
40 * 4, /* sr3 */
/* more tbd */
};
static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *,
struct frame_info *,
struct trad_frame_cache *,
CORE_ADDR);
static const struct tramp_frame hppanbsd_sigtramp_si4 =
{
SIGTRAMP_FRAME,
4,
{
{ 0xc7d7c012, -1 }, /* bb,>=,n %arg3, 30, 1f */
{ 0xd6e01c1e, -1 }, /* depwi 0,31,2,%arg3 */
{ 0x0ee81093, -1 }, /* ldw 4(%arg3), %r19 */
{ 0x0ee01097, -1 }, /* ldw 0(%arg3), %arg3 */
/* 1: */
{ 0xe8404000, -1 }, /* blr %r0, %rp */
{ 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */
{ 0x08000240, -1 }, /* nop */
{ 0x0803025a, -1 }, /* copy %r3, %arg0 */
{ 0x20200801, -1 }, /* ldil -40000000, %r1 */
{ 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
{ 0x34160268, -1 }, /* ldi 134, %t1 ; SYS_setcontext */
{ 0x081c025a, -1 }, /* copy ret0, %arg0 */
{ 0x20200801, -1 }, /* ldil -40000000, %r1 */
{ 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
{ 0x34160002, -1 }, /* ldi 1, %t1 ; SYS_exit */
{ TRAMP_SENTINEL_INSN, -1 }
},
hppanbsd_sigtramp_cache_init
};
static void
hppanbsd_sigtramp_cache_init (const struct tramp_frame *self,
struct frame_info *this_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
CORE_ADDR sp = get_frame_register_unsigned (this_frame, HPPA_SP_REGNUM);
CORE_ADDR base;
int *reg_offset;
int num_regs;
int i;
reg_offset = hppanbsd_mc_reg_offset;
num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset);
/* frame pointer */
base = sp - 0x280;
/* offsetof(struct sigframe_siginfo, sf_uc) = 128 */
base += 128;
/* offsetof(ucontext_t, uc_mcontext) == 40 */
base += 40;
for (i = 0; i < num_regs; i++)
if (reg_offset[i] != -1)
trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]);
/* Construct the frame ID using the function start. */
trad_frame_set_id (this_cache, frame_id_build (sp, func));
}
/* Core file support. */
/* Sizeof `struct reg' in <machine/reg.h>. */
#define HPPANBSD_SIZEOF_GREGS (44 * 4)
static int hppanbsd_reg_offset[] =
{
/* r0 ... r31 */
-1, 1 * 4, 2 * 4, 3 * 4,
4 * 4, 5 * 4, 6 * 4, 7 * 4,
8 * 4, 9 * 4, 10 * 4, 11 * 4,
12 * 4, 13 * 4, 14 * 4, 15 * 4,
16 * 4, 17 * 4, 18 * 4, 19 * 4,
20 * 4, 21 * 4, 22 * 4, 23 * 4,
24 * 4, 25 * 4, 26 * 4, 27 * 4,
28 * 4, 29 * 4, 30 * 4, 31 * 4,
32 * 4, /* HPPA_SAR_REGNUM */
35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
-1, /* HPPA_EIEM_REGNUM */
-1, /* HPPA_IIR_REGNUM */
-1, /* HPPA_ISR_REGNUM */
-1, /* HPPA_IOR_REGNUM */
0 * 4, /* HPPA_IPSW_REGNUM */
};
/* Supply register REGNUM from the buffer specified by GREGS and LEN
in the general-purpose register set REGSET to register cache
REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
static void
hppanbsd_supply_gregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
const gdb_byte *regs = gregs;
int i;
gdb_assert (len >= HPPANBSD_SIZEOF_GREGS);
for (i = 0; i < ARRAY_SIZE (hppanbsd_reg_offset); i++)
if (hppanbsd_reg_offset[i] != -1)
if (regnum == -1 || regnum == i)
regcache_raw_supply (regcache, i, regs + hppanbsd_reg_offset[i]);
}
/* NetBSD/hppa register set. */
static struct regset hppanbsd_gregset =
{
NULL,
hppanbsd_supply_gregset
};
/* Return the appropriate register set for the core section identified
by SECT_NAME and SECT_SIZE. */
static const struct regset *
hppanbsd_regset_from_core_section (struct gdbarch *gdbarch,
const char *sect_name, size_t sect_size)
{
if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPANBSD_SIZEOF_GREGS)
return &hppanbsd_gregset;
return NULL;
}
static void
hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
/* Obviously NetBSD is BSD-based. */
hppabsd_init_abi (info, gdbarch);
/* Core file support. */
set_gdbarch_regset_from_core_section
(gdbarch, hppanbsd_regset_from_core_section);
tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4);
}
/* Provide a prototype to silence -Wmissing-prototypes. */
extern initialize_file_ftype _initialize_hppanbsd_tdep;
void
_initialize_hppanbsd_tdep (void)
{
gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF,
hppanbsd_init_abi);
}
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