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Diffstat (limited to 'gdb/hppa-obsd-tdep.c')
| -rw-r--r-- | gdb/hppa-obsd-tdep.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/gdb/hppa-obsd-tdep.c b/gdb/hppa-obsd-tdep.c new file mode 100644 index 0000000..65364fe --- /dev/null +++ b/gdb/hppa-obsd-tdep.c @@ -0,0 +1,195 @@ +/* Target-dependent code for OpenBSD/hppa + + Copyright (C) 2004-2016 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" + +/* 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 (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) +{ + 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 (regcache, 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_gregset, NULL, cb_data); + cb (".reg2", 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); +} + + +/* 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); +} |