/* Target-dependent code for OpenBSD/hppa Copyright (C) 2004-2013 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 "gdb_assert.h" #include "gdb_string.h" #include "hppa-tdep.h" #include "hppabsd-tdep.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 = gregs; size_t offset; int i; gdb_assert (len >= HPPAOBSD_SIZEOF_GREGS); if (regnum == -1 || regnum == HPPA_R0_REGNUM) regcache_raw_supply (regcache, 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 (regcache, i, regs + offset); } if (len >= HPPANBSD_SIZEOF_GREGS) { if (regnum == -1 || regnum == HPPA_IPSW_REGNUM) regcache_raw_supply (regcache, HPPA_IPSW_REGNUM, regs); if (regnum == -1 || regnum == HPPA_SAR_REGNUM) regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs + 32 * 4); if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM) regcache_raw_supply (regcache, HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4); if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM) regcache_raw_supply (regcache, HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4); if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4); if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4); if (regnum == -1 || regnum == HPPA_SR0_REGNUM) regcache_raw_supply (regcache, HPPA_SR0_REGNUM, regs + 37 * 4); if (regnum == -1 || regnum == HPPA_SR1_REGNUM) regcache_raw_supply (regcache, HPPA_SR1_REGNUM, regs + 38 * 4); if (regnum == -1 || regnum == HPPA_SR2_REGNUM) regcache_raw_supply (regcache, HPPA_SR2_REGNUM, regs + 39 * 4); if (regnum == -1 || regnum == HPPA_SR3_REGNUM) regcache_raw_supply (regcache, HPPA_SR3_REGNUM, regs + 40 * 4); if (regnum == -1 || regnum == HPPA_SR4_REGNUM) regcache_raw_supply (regcache, HPPA_SR4_REGNUM, regs + 41 * 4); if (regnum == -1 || regnum == HPPA_SR5_REGNUM) regcache_raw_supply (regcache, HPPA_SR5_REGNUM, regs + 42 * 4); if (regnum == -1 || regnum == HPPA_SR6_REGNUM) regcache_raw_supply (regcache, HPPA_SR6_REGNUM, regs + 43 * 4); if (regnum == -1 || regnum == HPPA_SR7_REGNUM) regcache_raw_supply (regcache, HPPA_SR7_REGNUM, regs + 44 * 4); if (regnum == -1 || regnum == HPPA_CR26_REGNUM) regcache_raw_supply (regcache, HPPA_CR26_REGNUM, regs + 45 * 4); if (regnum == -1 || regnum == HPPA_CR27_REGNUM) regcache_raw_supply (regcache, HPPA_CR27_REGNUM, regs + 46 * 4); } else { if (regnum == -1 || regnum == HPPA_SAR_REGNUM) regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs); if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) regcache_raw_supply (regcache, 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) { struct gdbarch *gdbarch = get_regcache_arch (regcache); const gdb_byte *regs = 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 (regcache, i, regs + (i - HPPA_FP0_REGNUM) * 4); } } /* OpenBSD/hppa register sets. */ static struct regset hppaobsd_gregset = { NULL, hppaobsd_supply_gregset }; static struct regset hppaobsd_fpregset = { NULL, hppaobsd_supply_fpregset }; /* Return the appropriate register set for the core section identified by SECT_NAME and SECT_SIZE. */ static const struct regset * hppaobsd_regset_from_core_section (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size) { if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPAOBSD_SIZEOF_GREGS) return &hppaobsd_gregset; if (strcmp (sect_name, ".reg2") == 0 && sect_size >= HPPAOBSD_SIZEOF_FPREGS) return &hppaobsd_fpregset; return NULL; } 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_regset_from_core_section (gdbarch, hppaobsd_regset_from_core_section); } /* OpenBSD uses uses the traditional NetBSD core file format, even for ports that use ELF. */ #define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF static enum gdb_osabi hppaobsd_core_osabi_sniffer (bfd *abfd) { if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0) return GDB_OSABI_NETBSD_CORE; return GDB_OSABI_UNKNOWN; } /* Provide a prototype to silence -Wmissing-prototypes. */ void _initialize_hppabsd_tdep (void); void _initialize_hppabsd_tdep (void) { /* BFD doesn't set a flavour for NetBSD style a.out core files. */ gdbarch_register_osabi_sniffer (bfd_arch_hppa, bfd_target_unknown_flavour, hppaobsd_core_osabi_sniffer); gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD_ELF, hppaobsd_init_abi); }