1 /* Target-dependent code for NetBSD/sh.
3 Copyright (C) 2002, 2003, 2006, 2007 Free Software Foundation, Inc.
5 Contributed by Wasabi Systems, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
31 #include "gdb_assert.h"
32 #include "gdb_string.h"
35 #include "shnbsd-tdep.h"
36 #include "solib-svr4.h"
38 /* Convert an r0-r15 register number into an offset into a ptrace
39 register structure. */
40 static const int regmap[] =
60 /* Sizeof `struct reg' in <machine/reg.h>. */
61 #define SHNBSD_SIZEOF_GREGS (21 * 4)
63 /* Supply register REGNUM from the buffer specified by GREGS and LEN
64 in the general-purpose register set REGSET to register cache
65 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
68 shnbsd_supply_gregset (const struct regset *regset,
69 struct regcache *regcache,
70 int regnum, const void *gregs, size_t len)
72 const gdb_byte *regs = gregs;
75 gdb_assert (len >= SHNBSD_SIZEOF_GREGS);
77 if (regnum == gdbarch_pc_regnum (current_gdbarch) || regnum == -1)
78 regcache_raw_supply (regcache,
79 gdbarch_pc_regnum (current_gdbarch),
82 if (regnum == SR_REGNUM || regnum == -1)
83 regcache_raw_supply (regcache, SR_REGNUM, regs + (1 * 4));
85 if (regnum == PR_REGNUM || regnum == -1)
86 regcache_raw_supply (regcache, PR_REGNUM, regs + (2 * 4));
88 if (regnum == MACH_REGNUM || regnum == -1)
89 regcache_raw_supply (regcache, MACH_REGNUM, regs + (3 * 4));
91 if (regnum == MACL_REGNUM || regnum == -1)
92 regcache_raw_supply (regcache, MACL_REGNUM, regs + (4 * 4));
94 for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++)
96 if (regnum == i || regnum == -1)
97 regcache_raw_supply (regcache, i, regs + regmap[i - R0_REGNUM]);
101 /* Collect register REGNUM in the general-purpose register set
102 REGSET. from register cache REGCACHE into the buffer specified by
103 GREGS and LEN. If REGNUM is -1, do this for all registers in
107 shnbsd_collect_gregset (const struct regset *regset,
108 const struct regcache *regcache,
109 int regnum, void *gregs, size_t len)
111 gdb_byte *regs = gregs;
114 gdb_assert (len >= SHNBSD_SIZEOF_GREGS);
116 if (regnum == gdbarch_pc_regnum (current_gdbarch) || regnum == -1)
117 regcache_raw_collect (regcache, gdbarch_pc_regnum (current_gdbarch),
120 if (regnum == SR_REGNUM || regnum == -1)
121 regcache_raw_collect (regcache, SR_REGNUM, regs + (1 * 4));
123 if (regnum == PR_REGNUM || regnum == -1)
124 regcache_raw_collect (regcache, PR_REGNUM, regs + (2 * 4));
126 if (regnum == MACH_REGNUM || regnum == -1)
127 regcache_raw_collect (regcache, MACH_REGNUM, regs + (3 * 4));
129 if (regnum == MACL_REGNUM || regnum == -1)
130 regcache_raw_collect (regcache, MACL_REGNUM, regs + (4 * 4));
132 for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++)
134 if (regnum == i || regnum == -1)
135 regcache_raw_collect (regcache, i, regs + regmap[i - R0_REGNUM]);
139 /* SH register sets. */
141 static struct regset shnbsd_gregset =
144 shnbsd_supply_gregset,
145 shnbsd_collect_gregset
148 /* Return the appropriate register set for the core section identified
149 by SECT_NAME and SECT_SIZE. */
151 const struct regset *
152 shnbsd_regset_from_core_section (struct gdbarch *gdbarch,
153 const char *sect_name, size_t sect_size)
155 if (strcmp (sect_name, ".reg") == 0 && sect_size >= SHNBSD_SIZEOF_GREGS)
156 return &shnbsd_gregset;
162 shnbsd_supply_reg (struct regcache *regcache, const char *regs, int regnum)
164 shnbsd_supply_gregset (&shnbsd_gregset, regcache, regnum,
165 regs, SHNBSD_SIZEOF_GREGS);
169 shnbsd_fill_reg (const struct regcache *regcache, char *regs, int regnum)
171 shnbsd_collect_gregset (&shnbsd_gregset, regcache, regnum,
172 regs, SHNBSD_SIZEOF_GREGS);
177 shnbsd_init_abi (struct gdbarch_info info,
178 struct gdbarch *gdbarch)
180 set_gdbarch_regset_from_core_section
181 (gdbarch, shnbsd_regset_from_core_section);
183 set_solib_svr4_fetch_link_map_offsets
184 (gdbarch, svr4_ilp32_fetch_link_map_offsets);
188 /* OpenBSD uses uses the traditional NetBSD core file format, even for
189 ports that use ELF. */
190 #define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF
192 static enum gdb_osabi
193 shnbsd_core_osabi_sniffer (bfd *abfd)
195 if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
196 return GDB_OSABI_NETBSD_CORE;
198 return GDB_OSABI_UNKNOWN;
202 _initialize_shnbsd_tdep (void)
204 /* BFD doesn't set a flavour for NetBSD style a.out core files. */
205 gdbarch_register_osabi_sniffer (bfd_arch_sh, bfd_target_unknown_flavour,
206 shnbsd_core_osabi_sniffer);
208 gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_NETBSD_ELF,
210 gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_OPENBSD_ELF,