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af5ca30d NH |
1 | /* Target-dependent code for OpenBSD/hppa |
2 | ||
ecd75fc8 | 3 | Copyright (C) 2004-2014 Free Software Foundation, Inc. |
af5ca30d NH |
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 | |
5b1ba0e5 | 9 | the Free Software Foundation; either version 3 of the License, or |
af5ca30d NH |
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 | |
5b1ba0e5 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
af5ca30d NH |
19 | |
20 | #include "defs.h" | |
21 | #include "osabi.h" | |
22 | #include "regcache.h" | |
23 | #include "regset.h" | |
24 | ||
af5ca30d | 25 | #include "hppa-tdep.h" |
63807e1d | 26 | #include "hppabsd-tdep.h" |
af5ca30d NH |
27 | |
28 | /* Core file support. */ | |
29 | ||
30 | /* Sizeof `struct reg' in <machine/reg.h>. */ | |
cbb6aada MK |
31 | #define HPPAOBSD_SIZEOF_GREGS (34 * 4) /* OpenBSD 5.1 and earlier. */ |
32 | #define HPPANBSD_SIZEOF_GREGS (46 * 4) /* NetBSD and OpenBSD 5.2 and later. */ | |
7c54a108 MK |
33 | |
34 | /* Sizeof `struct fpreg' in <machine/reg.h>. */ | |
35 | #define HPPAOBSD_SIZEOF_FPREGS (32 * 8) | |
af5ca30d NH |
36 | |
37 | /* Supply register REGNUM from the buffer specified by GREGS and LEN | |
38 | in the general-purpose register set REGSET to register cache | |
39 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ | |
40 | ||
41 | static void | |
7c54a108 MK |
42 | hppaobsd_supply_gregset (const struct regset *regset, |
43 | struct regcache *regcache, | |
44 | int regnum, const void *gregs, size_t len) | |
af5ca30d | 45 | { |
cbb6aada | 46 | gdb_byte zero[4] = { 0 }; |
af5ca30d NH |
47 | const gdb_byte *regs = gregs; |
48 | size_t offset; | |
49 | int i; | |
50 | ||
7c54a108 | 51 | gdb_assert (len >= HPPAOBSD_SIZEOF_GREGS); |
af5ca30d | 52 | |
cbb6aada MK |
53 | if (regnum == -1 || regnum == HPPA_R0_REGNUM) |
54 | regcache_raw_supply (regcache, HPPA_R0_REGNUM, &zero); | |
af5ca30d NH |
55 | for (i = HPPA_R1_REGNUM, offset = 4; i <= HPPA_R31_REGNUM; i++, offset += 4) |
56 | { | |
57 | if (regnum == -1 || regnum == i) | |
58 | regcache_raw_supply (regcache, i, regs + offset); | |
59 | } | |
60 | ||
cbb6aada MK |
61 | if (len >= HPPANBSD_SIZEOF_GREGS) |
62 | { | |
63 | if (regnum == -1 || regnum == HPPA_IPSW_REGNUM) | |
64 | regcache_raw_supply (regcache, HPPA_IPSW_REGNUM, regs); | |
65 | if (regnum == -1 || regnum == HPPA_SAR_REGNUM) | |
66 | regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs + 32 * 4); | |
67 | if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM) | |
68 | regcache_raw_supply (regcache, HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4); | |
69 | if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM) | |
70 | regcache_raw_supply (regcache, HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4); | |
71 | if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) | |
72 | regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4); | |
73 | if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) | |
74 | regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4); | |
75 | if (regnum == -1 || regnum == HPPA_SR0_REGNUM) | |
76 | regcache_raw_supply (regcache, HPPA_SR0_REGNUM, regs + 37 * 4); | |
77 | if (regnum == -1 || regnum == HPPA_SR1_REGNUM) | |
78 | regcache_raw_supply (regcache, HPPA_SR1_REGNUM, regs + 38 * 4); | |
79 | if (regnum == -1 || regnum == HPPA_SR2_REGNUM) | |
80 | regcache_raw_supply (regcache, HPPA_SR2_REGNUM, regs + 39 * 4); | |
81 | if (regnum == -1 || regnum == HPPA_SR3_REGNUM) | |
82 | regcache_raw_supply (regcache, HPPA_SR3_REGNUM, regs + 40 * 4); | |
83 | if (regnum == -1 || regnum == HPPA_SR4_REGNUM) | |
84 | regcache_raw_supply (regcache, HPPA_SR4_REGNUM, regs + 41 * 4); | |
85 | if (regnum == -1 || regnum == HPPA_SR5_REGNUM) | |
86 | regcache_raw_supply (regcache, HPPA_SR5_REGNUM, regs + 42 * 4); | |
87 | if (regnum == -1 || regnum == HPPA_SR6_REGNUM) | |
88 | regcache_raw_supply (regcache, HPPA_SR6_REGNUM, regs + 43 * 4); | |
89 | if (regnum == -1 || regnum == HPPA_SR7_REGNUM) | |
90 | regcache_raw_supply (regcache, HPPA_SR7_REGNUM, regs + 44 * 4); | |
91 | if (regnum == -1 || regnum == HPPA_CR26_REGNUM) | |
92 | regcache_raw_supply (regcache, HPPA_CR26_REGNUM, regs + 45 * 4); | |
93 | if (regnum == -1 || regnum == HPPA_CR27_REGNUM) | |
94 | regcache_raw_supply (regcache, HPPA_CR27_REGNUM, regs + 46 * 4); | |
95 | } | |
96 | else | |
97 | { | |
98 | if (regnum == -1 || regnum == HPPA_SAR_REGNUM) | |
99 | regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs); | |
100 | if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) | |
101 | regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); | |
102 | if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) | |
103 | regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); | |
104 | } | |
af5ca30d NH |
105 | } |
106 | ||
7c54a108 MK |
107 | /* Supply register REGNUM from the buffer specified by FPREGS and LEN |
108 | in the floating-point register set REGSET to register cache | |
109 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ | |
110 | ||
111 | static void | |
112 | hppaobsd_supply_fpregset (const struct regset *regset, | |
113 | struct regcache *regcache, | |
114 | int regnum, const void *fpregs, size_t len) | |
115 | { | |
116 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
117 | const gdb_byte *regs = fpregs; | |
118 | int i; | |
119 | ||
120 | gdb_assert (len >= HPPAOBSD_SIZEOF_FPREGS); | |
121 | ||
122 | for (i = HPPA_FP0_REGNUM; i <= HPPA_FP31R_REGNUM; i++) | |
123 | { | |
124 | if (regnum == i || regnum == -1) | |
125 | regcache_raw_supply (regcache, i, regs + (i - HPPA_FP0_REGNUM) * 4); | |
126 | } | |
127 | } | |
128 | ||
129 | /* OpenBSD/hppa register sets. */ | |
af5ca30d | 130 | |
3ca7dae4 | 131 | static const struct regset hppaobsd_gregset = |
af5ca30d NH |
132 | { |
133 | NULL, | |
7c54a108 MK |
134 | hppaobsd_supply_gregset |
135 | }; | |
136 | ||
3ca7dae4 | 137 | static const struct regset hppaobsd_fpregset = |
7c54a108 MK |
138 | { |
139 | NULL, | |
140 | hppaobsd_supply_fpregset | |
af5ca30d NH |
141 | }; |
142 | ||
50c5eb53 | 143 | /* Iterate over supported core file register note sections. */ |
af5ca30d | 144 | |
50c5eb53 AA |
145 | static void |
146 | hppaobsd_iterate_over_regset_sections (struct gdbarch *gdbarch, | |
147 | iterate_over_regset_sections_cb *cb, | |
148 | void *cb_data, | |
149 | const struct regcache *regcache) | |
af5ca30d | 150 | { |
50c5eb53 AA |
151 | cb (".reg", HPPAOBSD_SIZEOF_GREGS, &hppaobsd_gregset, NULL, cb_data); |
152 | cb (".reg2", HPPAOBSD_SIZEOF_FPREGS, &hppaobsd_fpregset, NULL, cb_data); | |
af5ca30d NH |
153 | } |
154 | \f | |
155 | ||
63807e1d | 156 | static void |
af5ca30d NH |
157 | hppaobsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
158 | { | |
159 | /* Obviously OpenBSD is BSD-based. */ | |
160 | hppabsd_init_abi (info, gdbarch); | |
161 | ||
162 | /* Core file support. */ | |
50c5eb53 AA |
163 | set_gdbarch_iterate_over_regset_sections |
164 | (gdbarch, hppaobsd_iterate_over_regset_sections); | |
af5ca30d NH |
165 | } |
166 | \f | |
167 | ||
168 | /* OpenBSD uses uses the traditional NetBSD core file format, even for | |
169 | ports that use ELF. */ | |
170 | #define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF | |
171 | ||
172 | static enum gdb_osabi | |
173 | hppaobsd_core_osabi_sniffer (bfd *abfd) | |
174 | { | |
175 | if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0) | |
176 | return GDB_OSABI_NETBSD_CORE; | |
177 | ||
178 | return GDB_OSABI_UNKNOWN; | |
179 | } | |
180 | \f | |
181 | ||
182 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
183 | void _initialize_hppabsd_tdep (void); | |
184 | ||
185 | void | |
186 | _initialize_hppabsd_tdep (void) | |
187 | { | |
188 | /* BFD doesn't set a flavour for NetBSD style a.out core files. */ | |
189 | gdbarch_register_osabi_sniffer (bfd_arch_hppa, bfd_target_unknown_flavour, | |
190 | hppaobsd_core_osabi_sniffer); | |
191 | ||
192 | gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD_ELF, | |
193 | hppaobsd_init_abi); | |
194 | } |