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226 lines
6.5 KiB
C
226 lines
6.5 KiB
C
/* Target-dependent code for NetBSD/hppa
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Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "osabi.h"
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#include "regcache.h"
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#include "regset.h"
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#include "trad-frame.h"
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#include "tramp-frame.h"
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#include "gdb_assert.h"
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#include "gdb_string.h"
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#include "hppa-tdep.h"
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#include "hppabsd-tdep.h"
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/* From <machine/mcontext.h>. */
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static int hppanbsd_mc_reg_offset[] =
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{
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/* r0 ... r31 */
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-1, 1 * 4, 2 * 4, 3 * 4,
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4 * 4, 5 * 4, 6 * 4, 7 * 4,
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8 * 4, 9 * 4, 10 * 4, 11 * 4,
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12 * 4, 13 * 4, 14 * 4, 15 * 4,
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16 * 4, 17 * 4, 18 * 4, 19 * 4,
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20 * 4, 21 * 4, 22 * 4, 23 * 4,
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24 * 4, 25 * 4, 26 * 4, 27 * 4,
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28 * 4, 29 * 4, 30 * 4, 31 * 4,
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32 * 4, /* HPPA_SAR_REGNUM */
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35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
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33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
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36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
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34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
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-1, /* HPPA_EIEM_REGNUM */
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-1, /* HPPA_IIR_REGNUM */
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-1, /* HPPA_ISR_REGNUM */
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-1, /* HPPA_IOR_REGNUM */
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0 * 4, /* HPPA_IPSW_REGNUM */
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-1, /* spare? */
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41 * 4, /* HPPA_SR4_REGNUM */
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37 * 4, /* sr0 */
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38 * 4, /* sr1 */
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39 * 4, /* sr2 */
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40 * 4, /* sr3 */
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/* more tbd */
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};
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static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *,
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struct frame_info *,
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struct trad_frame_cache *,
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CORE_ADDR);
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static const struct tramp_frame hppanbsd_sigtramp_si4 =
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{
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SIGTRAMP_FRAME,
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4,
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{
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{ 0xc7d7c012, -1 }, /* bb,>=,n %arg3, 30, 1f */
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{ 0xd6e01c1e, -1 }, /* depwi 0,31,2,%arg3 */
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{ 0x0ee81093, -1 }, /* ldw 4(%arg3), %r19 */
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{ 0x0ee01097, -1 }, /* ldw 0(%arg3), %arg3 */
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/* 1: */
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{ 0xe8404000, -1 }, /* blr %r0, %rp */
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{ 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */
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{ 0x08000240, -1 }, /* nop */
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{ 0x0803025a, -1 }, /* copy %r3, %arg0 */
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{ 0x20200801, -1 }, /* ldil -40000000, %r1 */
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{ 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
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{ 0x34160268, -1 }, /* ldi 134, %t1 ; SYS_setcontext */
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{ 0x081c025a, -1 }, /* copy ret0, %arg0 */
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{ 0x20200801, -1 }, /* ldil -40000000, %r1 */
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{ 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
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{ 0x34160002, -1 }, /* ldi 1, %t1 ; SYS_exit */
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{ TRAMP_SENTINEL_INSN, -1 }
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},
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hppanbsd_sigtramp_cache_init
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};
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static void
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hppanbsd_sigtramp_cache_init (const struct tramp_frame *self,
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struct frame_info *this_frame,
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struct trad_frame_cache *this_cache,
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CORE_ADDR func)
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{
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struct gdbarch *gdbarch = get_frame_arch (this_frame);
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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CORE_ADDR sp = get_frame_register_unsigned (this_frame, HPPA_SP_REGNUM);
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CORE_ADDR base;
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int *reg_offset;
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int num_regs;
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int i;
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reg_offset = hppanbsd_mc_reg_offset;
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num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset);
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/* frame pointer */
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base = sp - 0x280;
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/* offsetof(struct sigframe_siginfo, sf_uc) = 128 */
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base += 128;
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/* offsetof(ucontext_t, uc_mcontext) == 40 */
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base += 40;
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for (i = 0; i < num_regs; i++)
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if (reg_offset[i] != -1)
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trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]);
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/* Construct the frame ID using the function start. */
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trad_frame_set_id (this_cache, frame_id_build (sp, func));
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}
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/* Core file support. */
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/* Sizeof `struct reg' in <machine/reg.h>. */
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#define HPPANBSD_SIZEOF_GREGS (44 * 4)
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static int hppanbsd_reg_offset[] =
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{
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/* r0 ... r31 */
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-1, 1 * 4, 2 * 4, 3 * 4,
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4 * 4, 5 * 4, 6 * 4, 7 * 4,
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8 * 4, 9 * 4, 10 * 4, 11 * 4,
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12 * 4, 13 * 4, 14 * 4, 15 * 4,
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16 * 4, 17 * 4, 18 * 4, 19 * 4,
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20 * 4, 21 * 4, 22 * 4, 23 * 4,
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24 * 4, 25 * 4, 26 * 4, 27 * 4,
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28 * 4, 29 * 4, 30 * 4, 31 * 4,
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32 * 4, /* HPPA_SAR_REGNUM */
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35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */
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33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */
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36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */
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34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */
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-1, /* HPPA_EIEM_REGNUM */
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-1, /* HPPA_IIR_REGNUM */
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-1, /* HPPA_ISR_REGNUM */
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-1, /* HPPA_IOR_REGNUM */
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0 * 4, /* HPPA_IPSW_REGNUM */
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};
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/* Supply register REGNUM from the buffer specified by GREGS and LEN
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in the general-purpose register set REGSET to register cache
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REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
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static void
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hppanbsd_supply_gregset (const struct regset *regset, struct regcache *regcache,
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int regnum, const void *gregs, size_t len)
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{
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const gdb_byte *regs = gregs;
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size_t offset;
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int i;
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gdb_assert (len >= HPPANBSD_SIZEOF_GREGS);
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for (i = 0; i < ARRAY_SIZE (hppanbsd_reg_offset); i++)
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if (hppanbsd_reg_offset[i] != -1)
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if (regnum == -1 || regnum == i)
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regcache_raw_supply (regcache, i, regs + hppanbsd_reg_offset[i]);
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}
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/* NetBSD/hppa register set. */
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static struct regset hppanbsd_gregset =
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{
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NULL,
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hppanbsd_supply_gregset
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};
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/* Return the appropriate register set for the core section identified
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by SECT_NAME and SECT_SIZE. */
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static const struct regset *
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hppanbsd_regset_from_core_section (struct gdbarch *gdbarch,
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const char *sect_name, size_t sect_size)
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{
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if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPANBSD_SIZEOF_GREGS)
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return &hppanbsd_gregset;
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return NULL;
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}
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static void
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hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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/* Obviously NetBSD is BSD-based. */
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hppabsd_init_abi (info, gdbarch);
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/* Core file support. */
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set_gdbarch_regset_from_core_section
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(gdbarch, hppanbsd_regset_from_core_section);
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tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4);
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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extern initialize_file_ftype _initialize_hppanbsd_tdep;
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void
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_initialize_hppanbsd_tdep (void)
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{
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gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF,
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hppanbsd_init_abi);
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}
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