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 (34 * 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_SAR_REGNUM) 63 regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs); 64 if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) 65 regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); 66 if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) 67 regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); 68 } 69 70 /* Supply register REGNUM from the buffer specified by FPREGS and LEN 71 in the floating-point register set REGSET to register cache 72 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ 73 74 static void 75 hppabsd_supply_fpregset (const struct regset *regset, 76 struct regcache *regcache, 77 int regnum, const void *fpregs, size_t len) 78 { 79 const char *regs = fpregs; 80 int i; 81 82 gdb_assert (len >= HPPABSD_SIZEOF_FPREGS); 83 84 for (i = HPPA_FP0_REGNUM; i < HPPA_FP0_REGNUM + 32 * 2; i++) 85 { 86 if (regnum == i || regnum == -1) 87 regcache_raw_supply (regcache, i, regs + (i - HPPA_FP0_REGNUM) * 4); 88 } 89 } 90 91 /* OpenBSD/hppa register sets. */ 92 93 static struct regset hppabsd_gregset = 94 { 95 NULL, 96 hppabsd_supply_gregset 97 }; 98 99 static struct regset hppabsd_fpregset = 100 { 101 NULL, 102 hppabsd_supply_fpregset 103 }; 104 105 /* Return the appropriate register set for the core section identified 106 by SECT_NAME and SECT_SIZE. */ 107 108 static const struct regset * 109 hppabsd_regset_from_core_section (struct gdbarch *gdbarch, 110 const char *sect_name, size_t sect_size) 111 { 112 if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPABSD_SIZEOF_GREGS) 113 return &hppabsd_gregset; 114 115 if (strcmp (sect_name, ".reg2") == 0 && sect_size >= HPPABSD_SIZEOF_FPREGS) 116 return &hppabsd_fpregset; 117 118 return NULL; 119 } 120 121 122 static void 123 hppabsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) 124 { 125 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 126 127 /* Core file support. */ 128 set_gdbarch_regset_from_core_section 129 (gdbarch, hppabsd_regset_from_core_section); 130 131 /* OpenBSD and NetBSD use ELF. */ 132 tdep->is_elf = 1; 133 134 /* OpenBSD and NetBSD uses SVR4-style shared libraries. */ 135 set_gdbarch_in_solib_call_trampoline 136 (gdbarch, generic_in_solib_call_trampoline); 137 set_solib_svr4_fetch_link_map_offsets 138 (gdbarch, svr4_ilp32_fetch_link_map_offsets); 139 } 140 141 142 /* OpenBSD uses uses the traditional NetBSD core file format, even for 143 ports that use ELF. */ 144 #define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF 145 146 static enum gdb_osabi 147 hppabsd_core_osabi_sniffer (bfd *abfd) 148 { 149 if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0) 150 return GDB_OSABI_NETBSD_CORE; 151 152 return GDB_OSABI_UNKNOWN; 153 } 154 155 156 /* Provide a prototype to silence -Wmissing-prototypes. */ 157 void _initialize_hppabsd_tdep (void); 158 159 void 160 _initialize_hppabsd_tdep (void) 161 { 162 /* BFD doesn't set a flavour for NetBSD style a.out core files. */ 163 gdbarch_register_osabi_sniffer (bfd_arch_hppa, bfd_target_unknown_flavour, 164 hppabsd_core_osabi_sniffer); 165 166 gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF, 167 hppabsd_init_abi); 168 gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD_ELF, 169 hppabsd_init_abi); 170 } 171