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/* Supply register REGNUM from the buffer specified by GREGS and LEN 40 in the general-purpose register set REGSET to register cache 41 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ 42 43static void 44hppabsd_supply_gregset (const struct regset *regset, struct regcache *regcache, 45 int regnum, const void *gregs, size_t len) 46{ 47 const char *regs = gregs; 48 size_t offset; 49 int i; 50 51 gdb_assert (len >= HPPABSD_SIZEOF_GREGS); 52 53 for (i = HPPA_R1_REGNUM, offset = 4; i <= HPPA_R31_REGNUM; i++, offset += 4) 54 { 55 if (regnum == -1 || regnum == i) 56 regcache_raw_supply (regcache, i, regs + offset); 57 } 58 59 if (regnum == -1 || regnum == HPPA_SAR_REGNUM) 60 regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs); 61 if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) 62 regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); 63 if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) 64 regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); 65} 66 67/* OpenBSD/hppa register set. */ 68 69static struct regset hppabsd_gregset = 70{ 71 NULL, 72 hppabsd_supply_gregset 73}; 74 75/* Return the appropriate register set for the core section identified 76 by SECT_NAME and SECT_SIZE. */ 77 78static const struct regset * 79hppabsd_regset_from_core_section (struct gdbarch *gdbarch, 80 const char *sect_name, size_t sect_size) 81{ 82 if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPABSD_SIZEOF_GREGS) 83 return &hppabsd_gregset; 84 85 return NULL; 86} 87 88 89static void 90hppabsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) 91{ 92 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 93 94 /* Core file support. */ 95 set_gdbarch_regset_from_core_section 96 (gdbarch, hppabsd_regset_from_core_section); 97 98 /* OpenBSD and NetBSD use ELF. */ 99 tdep->is_elf = 1; 100 101 /* OpenBSD and NetBSD uses SVR4-style shared libraries. */ 102 set_gdbarch_in_solib_call_trampoline 103 (gdbarch, generic_in_solib_call_trampoline); 104 set_solib_svr4_fetch_link_map_offsets 105 (gdbarch, svr4_ilp32_fetch_link_map_offsets); 106} 107 108 109/* OpenBSD uses uses the traditional NetBSD core file format, even for 110 ports that use ELF. */ 111#define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF 112 113static enum gdb_osabi 114hppabsd_core_osabi_sniffer (bfd *abfd) 115{ 116 if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0) 117 return GDB_OSABI_NETBSD_CORE; 118 119 return GDB_OSABI_UNKNOWN; 120} 121 122 123/* Provide a prototype to silence -Wmissing-prototypes. */ 124void _initialize_hppabsd_tdep (void); 125 126void 127_initialize_hppabsd_tdep (void) 128{ 129 /* BFD doesn't set a flavour for NetBSD style a.out core files. */ 130 gdbarch_register_osabi_sniffer (bfd_arch_hppa, bfd_target_unknown_flavour, 131 hppabsd_core_osabi_sniffer); 132 133 gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF, 134 hppabsd_init_abi); 135 gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD_ELF, 136 hppabsd_init_abi); 137} 138