1 /* Target-dependent code for SuperH running NetBSD, for GDB.
2 Copyright 2002 Free Software Foundation, Inc.
3 Contributed by Wasabi Systems, Inc.
5 This file is part of GDB.
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.
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.
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. */
26 #include "solib-svr4.h"
28 #include "sh-nbsd-tdep.h"
30 /* Convert an r0-r15 register number into an offset into a ptrace
31 register structure. */
32 static const int regmap[] =
52 #define SIZEOF_STRUCT_REG (21 * 4)
55 sh_nbsd_supply_registers (char *regs)
59 for (regno = R0_REGNUM; regno <= (R0_REGNUM + 15); regno++)
60 supply_register (regno, regs + regmap[regno - R0_REGNUM]);
62 supply_register (PC_REGNUM, regs + (0 * 4));
63 supply_register (SR_REGNUM, regs + (1 * 4));
64 supply_register (PR_REGNUM, regs + (2 * 4));
65 supply_register (MACH_REGNUM, regs + (3 * 4));
66 supply_register (MACL_REGNUM, regs + (4 * 4));
70 sh_nbsd_supply_register (char *regs, int regno)
73 sh_nbsd_supply_registers (regs);
75 if (regno == PC_REGNUM)
76 supply_register (PC_REGNUM, regs + (0 * 4));
77 else if (regno == SR_REGNUM)
78 supply_register (SR_REGNUM, regs + (1 * 4));
79 else if (regno == PR_REGNUM)
80 supply_register (PR_REGNUM, regs + (2 * 4));
81 else if (regno == MACH_REGNUM)
82 supply_register (MACH_REGNUM, regs + (3 * 4));
83 else if (regno == MACL_REGNUM)
84 supply_register (MACL_REGNUM, regs + (4 * 4));
85 else if (regno >= R0_REGNUM && regno <= (R0_REGNUM + 15))
86 supply_register (regno, regs + regmap[regno - R0_REGNUM]);
90 sh_nbsd_fill_registers (char *regs)
94 for (regno = R0_REGNUM; regno <= (R0_REGNUM + 15); regno++)
95 regcache_collect (regno, regs + regmap[regno - R0_REGNUM]);
97 regcache_collect (PC_REGNUM, regs + (0 * 4));
98 regcache_collect (SR_REGNUM, regs + (1 * 4));
99 regcache_collect (PR_REGNUM, regs + (2 * 4));
100 regcache_collect (MACH_REGNUM, regs + (3 * 4));
101 regcache_collect (MACL_REGNUM, regs + (4 * 4));
105 sh_nbsd_fill_register (char *regs, int regno)
108 sh_nbsd_fill_registers (regs);
110 if (regno == PC_REGNUM)
111 regcache_collect (PC_REGNUM, regs + (0 * 4));
112 else if (regno == SR_REGNUM)
113 regcache_collect (SR_REGNUM, regs + (1 * 4));
114 else if (regno == PR_REGNUM)
115 regcache_collect (PR_REGNUM, regs + (2 * 4));
116 else if (regno == MACH_REGNUM)
117 regcache_collect (MACH_REGNUM, regs + (3 * 4));
118 else if (regno == MACL_REGNUM)
119 regcache_collect (MACL_REGNUM, regs + (4 * 4));
120 else if (regno >= R0_REGNUM && regno <= (R0_REGNUM + 15))
121 regcache_collect (regno, regs + regmap[regno - R0_REGNUM]);
124 /* Fetch (and possibly build) an appropriate link_map_offsets
125 structure for NetBSD/sh targets using the struct offsets
126 defined in <link.h> (but without actual reference to that file).
128 This makes it possible to access NetBSD/sh shared libraries
129 from a GDB that was not built on a NetBSD/sh host (for cross
132 static struct link_map_offsets *
133 sh_nbsd_solib_svr4_fetch_link_map_offsets (void)
135 static struct link_map_offsets lmo;
136 static struct link_map_offsets *lmp = NULL;
142 lmo.r_debug_size = 16;
144 lmo.r_map_offset = 4;
147 lmo.link_map_size = 20;
149 lmo.l_addr_offset = 0;
152 lmo.l_name_offset = 4;
155 lmo.l_next_offset = 12;
158 lmo.l_prev_offset = 16;
166 fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
167 int which, CORE_ADDR ignore)
169 /* We get everything from the .reg section. */
173 if (core_reg_size < SIZEOF_STRUCT_REG)
175 warning ("Wrong size register set in core file.");
179 /* Integer registers. */
180 sh_nbsd_supply_registers (core_reg_sect);
184 fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size,
185 int which, CORE_ADDR ignore)
189 case 0: /* Integer registers. */
190 if (core_reg_size != SIZEOF_STRUCT_REG)
191 warning ("Wrong size register set in core file.");
193 sh_nbsd_supply_registers (core_reg_sect);
197 /* Don't know what kind of register request this is; just ignore it. */
202 static struct core_fns sh_nbsd_core_fns =
204 bfd_target_unknown_flavour, /* core_flavour */
205 default_check_format, /* check_format */
206 default_core_sniffer, /* core_sniffer */
207 fetch_core_registers, /* core_read_registers */
211 static struct core_fns sh_nbsd_elfcore_fns =
213 bfd_target_elf_flavour, /* core_flavour */
214 default_check_format, /* check_format */
215 default_core_sniffer, /* core_sniffer */
216 fetch_elfcore_registers, /* core_read_registers */
221 sh_nbsd_init_abi (struct gdbarch_info info,
222 struct gdbarch *gdbarch)
224 set_solib_svr4_fetch_link_map_offsets (gdbarch,
225 sh_nbsd_solib_svr4_fetch_link_map_offsets);
229 _initialize_sh_nbsd_tdep (void)
231 add_core_fns (&sh_nbsd_core_fns);
232 add_core_fns (&sh_nbsd_elfcore_fns);
234 sh_gdbarch_register_os_abi (SH_OSABI_NETBSD_ELF, sh_nbsd_init_abi);