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13a38d45 JT |
1 | /* Target-dependent code for SuperH running NetBSD, for GDB. |
2 | Copyright 2002 Free Software Foundation, Inc. | |
3 | Contributed by Wasabi Systems, 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 "gdbcore.h" | |
24 | #include "regcache.h" | |
25 | #include "value.h" | |
13a38d45 | 26 | |
ea5bc2a6 | 27 | #include "nbsd-tdep.h" |
ab3b8126 | 28 | #include "sh-tdep.h" |
4015edd1 | 29 | #include "shnbsd-tdep.h" |
13a38d45 JT |
30 | |
31 | /* Convert an r0-r15 register number into an offset into a ptrace | |
32 | register structure. */ | |
33 | static const int regmap[] = | |
34 | { | |
35 | (20 * 4), /* r0 */ | |
36 | (19 * 4), /* r1 */ | |
37 | (18 * 4), /* r2 */ | |
38 | (17 * 4), /* r3 */ | |
39 | (16 * 4), /* r4 */ | |
40 | (15 * 4), /* r5 */ | |
41 | (14 * 4), /* r6 */ | |
42 | (13 * 4), /* r7 */ | |
43 | (12 * 4), /* r8 */ | |
44 | (11 * 4), /* r9 */ | |
45 | (10 * 4), /* r10 */ | |
46 | ( 9 * 4), /* r11 */ | |
47 | ( 8 * 4), /* r12 */ | |
48 | ( 7 * 4), /* r13 */ | |
49 | ( 6 * 4), /* r14 */ | |
50 | ( 5 * 4), /* r15 */ | |
51 | }; | |
52 | ||
53 | #define SIZEOF_STRUCT_REG (21 * 4) | |
54 | ||
55 | void | |
20cb8cda | 56 | shnbsd_supply_reg (char *regs, int regno) |
13a38d45 | 57 | { |
20cb8cda | 58 | int i; |
13a38d45 | 59 | |
20cb8cda | 60 | if (regno == PC_REGNUM || regno == -1) |
13a38d45 | 61 | supply_register (PC_REGNUM, regs + (0 * 4)); |
20cb8cda JT |
62 | |
63 | if (regno == SR_REGNUM || regno == -1) | |
13a38d45 | 64 | supply_register (SR_REGNUM, regs + (1 * 4)); |
20cb8cda JT |
65 | |
66 | if (regno == PR_REGNUM || regno == -1) | |
13a38d45 | 67 | supply_register (PR_REGNUM, regs + (2 * 4)); |
13a38d45 | 68 | |
20cb8cda JT |
69 | if (regno == MACH_REGNUM || regno == -1) |
70 | supply_register (MACH_REGNUM, regs + (3 * 4)); | |
13a38d45 | 71 | |
20cb8cda JT |
72 | if (regno == MACL_REGNUM || regno == -1) |
73 | supply_register (MACL_REGNUM, regs + (4 * 4)); | |
13a38d45 | 74 | |
20cb8cda JT |
75 | if ((regno >= R0_REGNUM && regno <= (R0_REGNUM + 15)) || regno == -1) |
76 | { | |
77 | for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++) | |
78 | if (regno == i || regno == -1) | |
79 | supply_register (i, regs + regmap[i - R0_REGNUM]); | |
80 | } | |
13a38d45 JT |
81 | } |
82 | ||
83 | void | |
20cb8cda | 84 | shnbsd_fill_reg (char *regs, int regno) |
13a38d45 | 85 | { |
20cb8cda | 86 | int i; |
13a38d45 | 87 | |
20cb8cda | 88 | if (regno == PC_REGNUM || regno == -1) |
13a38d45 | 89 | regcache_collect (PC_REGNUM, regs + (0 * 4)); |
20cb8cda JT |
90 | |
91 | if (regno == SR_REGNUM || regno == -1) | |
13a38d45 | 92 | regcache_collect (SR_REGNUM, regs + (1 * 4)); |
20cb8cda JT |
93 | |
94 | if (regno == PR_REGNUM || regno == -1) | |
13a38d45 | 95 | regcache_collect (PR_REGNUM, regs + (2 * 4)); |
20cb8cda JT |
96 | |
97 | if (regno == MACH_REGNUM || regno == -1) | |
13a38d45 | 98 | regcache_collect (MACH_REGNUM, regs + (3 * 4)); |
20cb8cda JT |
99 | |
100 | if (regno == MACL_REGNUM || regno == -1) | |
13a38d45 | 101 | regcache_collect (MACL_REGNUM, regs + (4 * 4)); |
20cb8cda JT |
102 | |
103 | if ((regno >= R0_REGNUM && regno <= (R0_REGNUM + 15)) || regno == -1) | |
104 | { | |
105 | for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++) | |
106 | if (regno == i || regno == -1) | |
107 | regcache_collect (i, regs + regmap[i - R0_REGNUM]); | |
108 | } | |
13a38d45 JT |
109 | } |
110 | ||
13a38d45 JT |
111 | static void |
112 | fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, | |
113 | int which, CORE_ADDR ignore) | |
114 | { | |
115 | /* We get everything from the .reg section. */ | |
116 | if (which != 0) | |
117 | return; | |
118 | ||
119 | if (core_reg_size < SIZEOF_STRUCT_REG) | |
120 | { | |
121 | warning ("Wrong size register set in core file."); | |
122 | return; | |
123 | } | |
124 | ||
125 | /* Integer registers. */ | |
20cb8cda | 126 | shnbsd_supply_reg (core_reg_sect, -1); |
13a38d45 JT |
127 | } |
128 | ||
129 | static void | |
130 | fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, | |
131 | int which, CORE_ADDR ignore) | |
132 | { | |
133 | switch (which) | |
134 | { | |
135 | case 0: /* Integer registers. */ | |
136 | if (core_reg_size != SIZEOF_STRUCT_REG) | |
137 | warning ("Wrong size register set in core file."); | |
138 | else | |
20cb8cda | 139 | shnbsd_supply_reg (core_reg_sect, -1); |
13a38d45 JT |
140 | break; |
141 | ||
142 | default: | |
143 | /* Don't know what kind of register request this is; just ignore it. */ | |
144 | break; | |
145 | } | |
146 | } | |
147 | ||
20cb8cda | 148 | static struct core_fns shnbsd_core_fns = |
13a38d45 JT |
149 | { |
150 | bfd_target_unknown_flavour, /* core_flavour */ | |
151 | default_check_format, /* check_format */ | |
152 | default_core_sniffer, /* core_sniffer */ | |
153 | fetch_core_registers, /* core_read_registers */ | |
154 | NULL /* next */ | |
155 | }; | |
156 | ||
20cb8cda | 157 | static struct core_fns shnbsd_elfcore_fns = |
13a38d45 JT |
158 | { |
159 | bfd_target_elf_flavour, /* core_flavour */ | |
160 | default_check_format, /* check_format */ | |
161 | default_core_sniffer, /* core_sniffer */ | |
162 | fetch_elfcore_registers, /* core_read_registers */ | |
163 | NULL /* next */ | |
164 | }; | |
165 | ||
166 | static void | |
20cb8cda | 167 | shnbsd_init_abi (struct gdbarch_info info, |
13a38d45 JT |
168 | struct gdbarch *gdbarch) |
169 | { | |
170 | set_solib_svr4_fetch_link_map_offsets (gdbarch, | |
ea5bc2a6 | 171 | nbsd_ilp32_solib_svr4_fetch_link_map_offsets); |
13a38d45 JT |
172 | } |
173 | ||
174 | void | |
20cb8cda | 175 | _initialize_shnbsd_tdep (void) |
13a38d45 | 176 | { |
20cb8cda JT |
177 | add_core_fns (&shnbsd_core_fns); |
178 | add_core_fns (&shnbsd_elfcore_fns); | |
13a38d45 | 179 | |
20cb8cda | 180 | sh_gdbarch_register_os_abi (SH_OSABI_NETBSD_ELF, shnbsd_init_abi); |
13a38d45 | 181 | } |