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- /* Target-dependent code for OpenBSD/hppa
- Copyright (C) 2004-2022 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 "hppa-tdep.h"
- #include "hppa-bsd-tdep.h"
- #include "gdbarch.h"
- /* Core file support. */
- /* Sizeof `struct reg' in <machine/reg.h>. */
- #define HPPAOBSD_SIZEOF_GREGS (34 * 4) /* OpenBSD 5.1 and earlier. */
- #define HPPANBSD_SIZEOF_GREGS (46 * 4) /* NetBSD and OpenBSD 5.2 and later. */
- /* Sizeof `struct fpreg' in <machine/reg.h>. */
- #define HPPAOBSD_SIZEOF_FPREGS (32 * 8)
- /* 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
- hppaobsd_supply_gregset (const struct regset *regset,
- struct regcache *regcache,
- int regnum, const void *gregs, size_t len)
- {
- gdb_byte zero[4] = { 0 };
- const gdb_byte *regs = (const gdb_byte *) gregs;
- size_t offset;
- int i;
- gdb_assert (len >= HPPAOBSD_SIZEOF_GREGS);
- if (regnum == -1 || regnum == HPPA_R0_REGNUM)
- regcache->raw_supply (HPPA_R0_REGNUM, &zero);
- for (i = HPPA_R1_REGNUM, offset = 4; i <= HPPA_R31_REGNUM; i++, offset += 4)
- {
- if (regnum == -1 || regnum == i)
- regcache->raw_supply (i, regs + offset);
- }
- if (len >= HPPANBSD_SIZEOF_GREGS)
- {
- if (regnum == -1 || regnum == HPPA_IPSW_REGNUM)
- regcache->raw_supply (HPPA_IPSW_REGNUM, regs);
- if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
- regcache->raw_supply (HPPA_SAR_REGNUM, regs + 32 * 4);
- if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM)
- regcache->raw_supply (HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4);
- if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM)
- regcache->raw_supply (HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4);
- if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
- regcache->raw_supply (HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
- if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
- regcache->raw_supply (HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
- if (regnum == -1 || regnum == HPPA_SR0_REGNUM)
- regcache->raw_supply (HPPA_SR0_REGNUM, regs + 37 * 4);
- if (regnum == -1 || regnum == HPPA_SR1_REGNUM)
- regcache->raw_supply (HPPA_SR1_REGNUM, regs + 38 * 4);
- if (regnum == -1 || regnum == HPPA_SR2_REGNUM)
- regcache->raw_supply (HPPA_SR2_REGNUM, regs + 39 * 4);
- if (regnum == -1 || regnum == HPPA_SR3_REGNUM)
- regcache->raw_supply (HPPA_SR3_REGNUM, regs + 40 * 4);
- if (regnum == -1 || regnum == HPPA_SR4_REGNUM)
- regcache->raw_supply (HPPA_SR4_REGNUM, regs + 41 * 4);
- if (regnum == -1 || regnum == HPPA_SR5_REGNUM)
- regcache->raw_supply (HPPA_SR5_REGNUM, regs + 42 * 4);
- if (regnum == -1 || regnum == HPPA_SR6_REGNUM)
- regcache->raw_supply (HPPA_SR6_REGNUM, regs + 43 * 4);
- if (regnum == -1 || regnum == HPPA_SR7_REGNUM)
- regcache->raw_supply (HPPA_SR7_REGNUM, regs + 44 * 4);
- if (regnum == -1 || regnum == HPPA_CR26_REGNUM)
- regcache->raw_supply (HPPA_CR26_REGNUM, regs + 45 * 4);
- if (regnum == -1 || regnum == HPPA_CR27_REGNUM)
- regcache->raw_supply (HPPA_CR27_REGNUM, regs + 46 * 4);
- }
- else
- {
- if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
- regcache->raw_supply (HPPA_SAR_REGNUM, regs);
- if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
- regcache->raw_supply (HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
- if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
- regcache->raw_supply (HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
- }
- }
- /* Supply register REGNUM from the buffer specified by FPREGS and LEN
- in the floating-point register set REGSET to register cache
- REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
- static void
- hppaobsd_supply_fpregset (const struct regset *regset,
- struct regcache *regcache,
- int regnum, const void *fpregs, size_t len)
- {
- const gdb_byte *regs = (const gdb_byte *) fpregs;
- int i;
- gdb_assert (len >= HPPAOBSD_SIZEOF_FPREGS);
- for (i = HPPA_FP0_REGNUM; i <= HPPA_FP31R_REGNUM; i++)
- {
- if (regnum == i || regnum == -1)
- regcache->raw_supply (i, regs + (i - HPPA_FP0_REGNUM) * 4);
- }
- }
- /* OpenBSD/hppa register sets. */
- static const struct regset hppaobsd_gregset =
- {
- NULL,
- hppaobsd_supply_gregset,
- NULL,
- REGSET_VARIABLE_SIZE
- };
- static const struct regset hppaobsd_fpregset =
- {
- NULL,
- hppaobsd_supply_fpregset
- };
- /* Iterate over supported core file register note sections. */
- static void
- hppaobsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
- iterate_over_regset_sections_cb *cb,
- void *cb_data,
- const struct regcache *regcache)
- {
- cb (".reg", HPPAOBSD_SIZEOF_GREGS, HPPAOBSD_SIZEOF_GREGS, &hppaobsd_gregset,
- NULL, cb_data);
- cb (".reg2", HPPAOBSD_SIZEOF_FPREGS, HPPAOBSD_SIZEOF_FPREGS,
- &hppaobsd_fpregset, NULL, cb_data);
- }
- static void
- hppaobsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
- {
- /* Obviously OpenBSD is BSD-based. */
- hppabsd_init_abi (info, gdbarch);
- /* Core file support. */
- set_gdbarch_iterate_over_regset_sections
- (gdbarch, hppaobsd_iterate_over_regset_sections);
- }
- void _initialize_hppabsd_tdep ();
- void
- _initialize_hppabsd_tdep ()
- {
- gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD,
- hppaobsd_init_abi);
- }
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