mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 04:52:05 +08:00
221 lines
6.4 KiB
C
221 lines
6.4 KiB
C
/* Target-dependent code for NetBSD/hppa
|
||
|
||
Copyright (C) 2008-2016 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 "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 = (const gdb_byte *) 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 const struct regset hppanbsd_gregset =
|
||
{
|
||
NULL,
|
||
hppanbsd_supply_gregset
|
||
};
|
||
|
||
/* Iterate over supported core file register note sections. */
|
||
|
||
static void
|
||
hppanbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
|
||
iterate_over_regset_sections_cb *cb,
|
||
void *cb_data,
|
||
const struct regcache *regcache)
|
||
{
|
||
cb (".reg", HPPANBSD_SIZEOF_GREGS, &hppanbsd_gregset, NULL, cb_data);
|
||
}
|
||
|
||
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_iterate_over_regset_sections
|
||
(gdbarch, hppanbsd_iterate_over_regset_sections);
|
||
|
||
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);
|
||
}
|