197 lines
6.6 KiB
C
197 lines
6.6 KiB
C
/* Target-dependent code for OpenBSD/hppa
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Copyright (C) 2004-2015 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 "hppa-tdep.h"
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#include "hppabsd-tdep.h"
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/* Core file support. */
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/* Sizeof `struct reg' in <machine/reg.h>. */
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#define HPPAOBSD_SIZEOF_GREGS (34 * 4) /* OpenBSD 5.1 and earlier. */
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#define HPPANBSD_SIZEOF_GREGS (46 * 4) /* NetBSD and OpenBSD 5.2 and later. */
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/* Sizeof `struct fpreg' in <machine/reg.h>. */
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#define HPPAOBSD_SIZEOF_FPREGS (32 * 8)
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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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hppaobsd_supply_gregset (const struct regset *regset,
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struct regcache *regcache,
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int regnum, const void *gregs, size_t len)
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{
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gdb_byte zero[4] = { 0 };
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const gdb_byte *regs = (const gdb_byte *) gregs;
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size_t offset;
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int i;
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gdb_assert (len >= HPPAOBSD_SIZEOF_GREGS);
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if (regnum == -1 || regnum == HPPA_R0_REGNUM)
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regcache_raw_supply (regcache, HPPA_R0_REGNUM, &zero);
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for (i = HPPA_R1_REGNUM, offset = 4; i <= HPPA_R31_REGNUM; i++, offset += 4)
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{
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if (regnum == -1 || regnum == i)
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regcache_raw_supply (regcache, i, regs + offset);
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}
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if (len >= HPPANBSD_SIZEOF_GREGS)
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{
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if (regnum == -1 || regnum == HPPA_IPSW_REGNUM)
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regcache_raw_supply (regcache, HPPA_IPSW_REGNUM, regs);
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if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
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regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs + 32 * 4);
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if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM)
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regcache_raw_supply (regcache, HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4);
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if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM)
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regcache_raw_supply (regcache, HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4);
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if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
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regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
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if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
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regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
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if (regnum == -1 || regnum == HPPA_SR0_REGNUM)
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regcache_raw_supply (regcache, HPPA_SR0_REGNUM, regs + 37 * 4);
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if (regnum == -1 || regnum == HPPA_SR1_REGNUM)
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regcache_raw_supply (regcache, HPPA_SR1_REGNUM, regs + 38 * 4);
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if (regnum == -1 || regnum == HPPA_SR2_REGNUM)
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regcache_raw_supply (regcache, HPPA_SR2_REGNUM, regs + 39 * 4);
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if (regnum == -1 || regnum == HPPA_SR3_REGNUM)
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regcache_raw_supply (regcache, HPPA_SR3_REGNUM, regs + 40 * 4);
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if (regnum == -1 || regnum == HPPA_SR4_REGNUM)
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regcache_raw_supply (regcache, HPPA_SR4_REGNUM, regs + 41 * 4);
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if (regnum == -1 || regnum == HPPA_SR5_REGNUM)
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regcache_raw_supply (regcache, HPPA_SR5_REGNUM, regs + 42 * 4);
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if (regnum == -1 || regnum == HPPA_SR6_REGNUM)
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regcache_raw_supply (regcache, HPPA_SR6_REGNUM, regs + 43 * 4);
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if (regnum == -1 || regnum == HPPA_SR7_REGNUM)
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regcache_raw_supply (regcache, HPPA_SR7_REGNUM, regs + 44 * 4);
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if (regnum == -1 || regnum == HPPA_CR26_REGNUM)
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regcache_raw_supply (regcache, HPPA_CR26_REGNUM, regs + 45 * 4);
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if (regnum == -1 || regnum == HPPA_CR27_REGNUM)
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regcache_raw_supply (regcache, HPPA_CR27_REGNUM, regs + 46 * 4);
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}
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else
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{
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if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
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regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs);
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if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
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regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
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if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
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regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
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}
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}
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/* Supply register REGNUM from the buffer specified by FPREGS and LEN
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in the floating-point 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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hppaobsd_supply_fpregset (const struct regset *regset,
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struct regcache *regcache,
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int regnum, const void *fpregs, size_t len)
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{
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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const gdb_byte *regs = (const gdb_byte *) fpregs;
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int i;
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gdb_assert (len >= HPPAOBSD_SIZEOF_FPREGS);
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for (i = HPPA_FP0_REGNUM; i <= HPPA_FP31R_REGNUM; i++)
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{
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if (regnum == i || regnum == -1)
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regcache_raw_supply (regcache, i, regs + (i - HPPA_FP0_REGNUM) * 4);
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}
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}
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/* OpenBSD/hppa register sets. */
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static const struct regset hppaobsd_gregset =
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{
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NULL,
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hppaobsd_supply_gregset,
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NULL,
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REGSET_VARIABLE_SIZE
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};
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static const struct regset hppaobsd_fpregset =
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{
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NULL,
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hppaobsd_supply_fpregset
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};
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/* Iterate over supported core file register note sections. */
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static void
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hppaobsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
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iterate_over_regset_sections_cb *cb,
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void *cb_data,
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const struct regcache *regcache)
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{
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cb (".reg", HPPAOBSD_SIZEOF_GREGS, &hppaobsd_gregset, NULL, cb_data);
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cb (".reg2", HPPAOBSD_SIZEOF_FPREGS, &hppaobsd_fpregset, NULL, cb_data);
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}
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static void
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hppaobsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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/* Obviously OpenBSD 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_iterate_over_regset_sections
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(gdbarch, hppaobsd_iterate_over_regset_sections);
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}
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/* OpenBSD uses uses the traditional NetBSD core file format, even for
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ports that use ELF. */
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#define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF
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static enum gdb_osabi
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hppaobsd_core_osabi_sniffer (bfd *abfd)
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{
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if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
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return GDB_OSABI_NETBSD_CORE;
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return GDB_OSABI_UNKNOWN;
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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void _initialize_hppabsd_tdep (void);
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void
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_initialize_hppabsd_tdep (void)
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{
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/* BFD doesn't set a flavour for NetBSD style a.out core files. */
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gdbarch_register_osabi_sniffer (bfd_arch_hppa, bfd_target_unknown_flavour,
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hppaobsd_core_osabi_sniffer);
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gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD_ELF,
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hppaobsd_init_abi);
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}
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