| /* Target-dependent code for OpenBSD/hppa |
| |
| Copyright (C) 2004-2021 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); |
| } |