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
);