1 /* Target-dependent code for HP PA-RISC BSD's. 2 3 Copyright 2004 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place - Suite 330, 20 Boston, MA 02111-1307, USA. */ 21 22 #include "defs.h" 23 #include "arch-utils.h" 24 #include "osabi.h" 25 #include "regcache.h" 26 #include "regset.h" 27 28 #include "gdb_assert.h" 29 #include "gdb_string.h" 30 31 #include "hppa-tdep.h" 32 #include "solib-svr4.h" 33 34 /* Core file support. */ 35 36 /* Sizeof `struct reg' in <machine/reg.h>. */ 37 #define HPPABSD_SIZEOF_GREGS (46 * 4) 38 39 /* Sizeof `struct fpreg' in <machine/reg.h. */ 40 #define HPPABSD_SIZEOF_FPREGS (32 * 8) 41 42 /* Supply register REGNUM from the buffer specified by GREGS and LEN 43 in the general-purpose register set REGSET to register cache 44 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ 45 46 static void 47 hppabsd_supply_gregset (const struct regset *regset, struct regcache *regcache, 48 int regnum, const void *gregs, size_t len) 49 { 50 const char *regs = gregs; 51 size_t offset; 52 int i; 53 54 gdb_assert (len >= HPPABSD_SIZEOF_GREGS); 55 56 for (i = HPPA_R1_REGNUM, offset = 4; i <= HPPA_R31_REGNUM; i++, offset += 4) 57 { 58 if (regnum == -1 || regnum == i) 59 regcache_raw_supply (regcache, i, regs + offset); 60 } 61 62 if (regnum == -1 || regnum == HPPA_IPSW_REGNUM) 63 regcache_raw_supply (regcache, HPPA_IPSW_REGNUM, regs); 64 if (regnum == -1 || regnum == HPPA_SAR_REGNUM) 65 regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs + 32 * 4); 66 if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM) 67 regcache_raw_supply (regcache, HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4); 68 if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM) 69 regcache_raw_supply (regcache, HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4); 70 if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) 71 regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4); 72 if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) 73 regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4); 74 if (regnum == -1 || regnum == HPPA_SR0_REGNUM) 75 regcache_raw_supply (regcache, HPPA_SR0_REGNUM, regs + 37 * 4); 76 if (regnum == -1 || regnum == HPPA_SR1_REGNUM) 77 regcache_raw_supply (regcache, HPPA_SR1_REGNUM, regs + 38 * 4); 78 if (regnum == -1 || regnum == HPPA_SR2_REGNUM) 79 regcache_raw_supply (regcache, HPPA_SR2_REGNUM, regs + 39 * 4); 80 if (regnum == -1 || regnum == HPPA_SR3_REGNUM) 81 regcache_raw_supply (regcache, HPPA_SR3_REGNUM, regs + 40 * 4); 82 if (regnum == -1 || regnum == HPPA_SR4_REGNUM) 83 regcache_raw_supply (regcache, HPPA_SR4_REGNUM, regs + 41 * 4); 84 if (regnum == -1 || regnum == HPPA_SR5_REGNUM) 85 regcache_raw_supply (regcache, HPPA_SR5_REGNUM, regs + 42 * 4); 86 if (regnum == -1 || regnum == HPPA_SR6_REGNUM) 87 regcache_raw_supply (regcache, HPPA_SR6_REGNUM, regs + 43 * 4); 88 if (regnum == -1 || regnum == HPPA_SR7_REGNUM) 89 regcache_raw_supply (regcache, HPPA_SR7_REGNUM, regs + 44 * 4); 90 if (regnum == -1 || regnum == HPPA_CR26_REGNUM) 91 regcache_raw_supply (regcache, HPPA_CR26_REGNUM, regs + 45 * 4); 92 if (regnum == -1 || regnum == HPPA_CR27_REGNUM) 93 regcache_raw_supply (regcache, HPPA_CR27_REGNUM, regs + 46 * 4); 94 } 95 96 /* Supply register REGNUM from the buffer specified by FPREGS and LEN 97 in the floating-point register set REGSET to register cache 98 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ 99 100 static void 101 hppabsd_supply_fpregset (const struct regset *regset, 102 struct regcache *regcache, 103 int regnum, const void *fpregs, size_t len) 104 { 105 const char *regs = fpregs; 106 int i; 107 108 gdb_assert (len >= HPPABSD_SIZEOF_FPREGS); 109 110 for (i = HPPA_FP0_REGNUM; i < HPPA_FP0_REGNUM + 32 * 2; i++) 111 { 112 if (regnum == i || regnum == -1) 113 regcache_raw_supply (regcache, i, regs + (i - HPPA_FP0_REGNUM) * 4); 114 } 115 } 116 117 /* OpenBSD/hppa register sets. */ 118 119 static struct regset hppabsd_gregset = 120 { 121 NULL, 122 hppabsd_supply_gregset 123 }; 124 125 static struct regset hppabsd_fpregset = 126 { 127 NULL, 128 hppabsd_supply_fpregset 129 }; 130 131 /* Return the appropriate register set for the core section identified 132 by SECT_NAME and SECT_SIZE. */ 133 134 static const struct regset * 135 hppabsd_regset_from_core_section (struct gdbarch *gdbarch, 136 const char *sect_name, size_t sect_size) 137 { 138 if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPABSD_SIZEOF_GREGS) 139 return &hppabsd_gregset; 140 141 if (strcmp (sect_name, ".reg2") == 0 && sect_size >= HPPABSD_SIZEOF_FPREGS) 142 return &hppabsd_fpregset; 143 144 return NULL; 145 } 146 147 148 static void 149 hppabsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) 150 { 151 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 152 153 /* Core file support. */ 154 set_gdbarch_regset_from_core_section 155 (gdbarch, hppabsd_regset_from_core_section); 156 157 /* OpenBSD and NetBSD use ELF. */ 158 tdep->is_elf = 1; 159 160 /* OpenBSD and NetBSD uses SVR4-style shared libraries. */ 161 set_gdbarch_in_solib_call_trampoline 162 (gdbarch, generic_in_solib_call_trampoline); 163 set_solib_svr4_fetch_link_map_offsets 164 (gdbarch, svr4_ilp32_fetch_link_map_offsets); 165 } 166 167 168 /* OpenBSD uses uses the traditional NetBSD core file format, even for 169 ports that use ELF. */ 170 #define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF 171 172 static enum gdb_osabi 173 hppabsd_core_osabi_sniffer (bfd *abfd) 174 { 175 if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0) 176 return GDB_OSABI_NETBSD_CORE; 177 178 return GDB_OSABI_UNKNOWN; 179 } 180 181 182 /* Provide a prototype to silence -Wmissing-prototypes. */ 183 void _initialize_hppabsd_tdep (void); 184 185 void 186 _initialize_hppabsd_tdep (void) 187 { 188 /* BFD doesn't set a flavour for NetBSD style a.out core files. */ 189 gdbarch_register_osabi_sniffer (bfd_arch_hppa, bfd_target_unknown_flavour, 190 hppabsd_core_osabi_sniffer); 191 192 gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF, 193 hppabsd_init_abi); 194 gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD_ELF, 195 hppabsd_init_abi); 196 } 197