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- /* Target-dependent code for NetBSD/hppa
- Copyright (C) 2008-2022 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 "hppa-bsd-tdep.h"
- #include "netbsd-tdep.h"
- #include "gdbarch.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, ULONGEST_MAX }, /* bb,>=,n %arg3, 30, 1f */
- { 0xd6e01c1e, ULONGEST_MAX }, /* depwi 0,31,2,%arg3 */
- { 0x0ee81093, ULONGEST_MAX }, /* ldw 4(%arg3), %r19 */
- { 0x0ee01097, ULONGEST_MAX }, /* ldw 0(%arg3), %arg3 */
- /* 1: */
- { 0xe8404000, ULONGEST_MAX }, /* blr %r0, %rp */
- { 0xeae0c002, ULONGEST_MAX }, /* bv,n %r0(%arg3) */
- { 0x08000240, ULONGEST_MAX }, /* nop */
- { 0x0803025a, ULONGEST_MAX }, /* copy %r3, %arg0 */
- { 0x20200801, ULONGEST_MAX }, /* ldil -40000000, %r1 */
- { 0xe420e008, ULONGEST_MAX }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
- { 0x34160268, ULONGEST_MAX }, /* ldi 134, %t1 ; SYS_setcontext */
- { 0x081c025a, ULONGEST_MAX }, /* copy ret0, %arg0 */
- { 0x20200801, ULONGEST_MAX }, /* ldil -40000000, %r1 */
- { 0xe420e008, ULONGEST_MAX }, /* be,l 4(%sr7, %r1), %sr0, %r31 */
- { 0x34160002, ULONGEST_MAX }, /* ldi 1, %t1 ; SYS_exit */
- { TRAMP_SENTINEL_INSN, ULONGEST_MAX }
- },
- 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)
- {
- 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 (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_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);
- nbsd_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);
- }
- void _initialize_hppanbsd_tdep ();
- void
- _initialize_hppanbsd_tdep ()
- {
- gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD,
- hppanbsd_init_abi);
- }
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