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af5ca30d NH |
1 | /* Target-dependent code for OpenBSD/hppa |
2 | ||
4c38e0a4 JB |
3 | Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 |
4 | Free Software Foundation, Inc. | |
af5ca30d NH |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
5b1ba0e5 | 10 | the Free Software Foundation; either version 3 of the License, or |
af5ca30d NH |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
5b1ba0e5 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
af5ca30d NH |
20 | |
21 | #include "defs.h" | |
22 | #include "osabi.h" | |
23 | #include "regcache.h" | |
24 | #include "regset.h" | |
25 | ||
26 | #include "gdb_assert.h" | |
27 | #include "gdb_string.h" | |
28 | ||
29 | #include "hppa-tdep.h" | |
63807e1d | 30 | #include "hppabsd-tdep.h" |
af5ca30d NH |
31 | |
32 | /* Core file support. */ | |
33 | ||
34 | /* Sizeof `struct reg' in <machine/reg.h>. */ | |
35 | #define HPPABSD_SIZEOF_GREGS (34 * 4) | |
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 | |
42 | hppabsd_supply_gregset (const struct regset *regset, struct regcache *regcache, | |
43 | int regnum, const void *gregs, size_t len) | |
44 | { | |
45 | const gdb_byte *regs = gregs; | |
46 | size_t offset; | |
47 | int i; | |
48 | ||
49 | gdb_assert (len >= HPPABSD_SIZEOF_GREGS); | |
50 | ||
51 | for (i = HPPA_R1_REGNUM, offset = 4; i <= HPPA_R31_REGNUM; i++, offset += 4) | |
52 | { | |
53 | if (regnum == -1 || regnum == i) | |
54 | regcache_raw_supply (regcache, i, regs + offset); | |
55 | } | |
56 | ||
57 | if (regnum == -1 || regnum == HPPA_SAR_REGNUM) | |
58 | regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs); | |
59 | if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) | |
60 | regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); | |
61 | if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) | |
62 | regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); | |
63 | } | |
64 | ||
65 | /* OpenBSD/hppa register set. */ | |
66 | ||
67 | static struct regset hppabsd_gregset = | |
68 | { | |
69 | NULL, | |
70 | hppabsd_supply_gregset | |
71 | }; | |
72 | ||
73 | /* Return the appropriate register set for the core section identified | |
74 | by SECT_NAME and SECT_SIZE. */ | |
75 | ||
76 | static const struct regset * | |
77 | hppaobsd_regset_from_core_section (struct gdbarch *gdbarch, | |
78 | const char *sect_name, size_t sect_size) | |
79 | { | |
80 | if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPABSD_SIZEOF_GREGS) | |
81 | return &hppabsd_gregset; | |
82 | ||
83 | return NULL; | |
84 | } | |
85 | \f | |
86 | ||
63807e1d | 87 | static void |
af5ca30d NH |
88 | hppaobsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
89 | { | |
90 | /* Obviously OpenBSD is BSD-based. */ | |
91 | hppabsd_init_abi (info, gdbarch); | |
92 | ||
93 | /* Core file support. */ | |
94 | set_gdbarch_regset_from_core_section | |
95 | (gdbarch, hppaobsd_regset_from_core_section); | |
96 | ||
97 | } | |
98 | \f | |
99 | ||
100 | /* OpenBSD uses uses the traditional NetBSD core file format, even for | |
101 | ports that use ELF. */ | |
102 | #define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF | |
103 | ||
104 | static enum gdb_osabi | |
105 | hppaobsd_core_osabi_sniffer (bfd *abfd) | |
106 | { | |
107 | if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0) | |
108 | return GDB_OSABI_NETBSD_CORE; | |
109 | ||
110 | return GDB_OSABI_UNKNOWN; | |
111 | } | |
112 | \f | |
113 | ||
114 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
115 | void _initialize_hppabsd_tdep (void); | |
116 | ||
117 | void | |
118 | _initialize_hppabsd_tdep (void) | |
119 | { | |
120 | /* BFD doesn't set a flavour for NetBSD style a.out core files. */ | |
121 | gdbarch_register_osabi_sniffer (bfd_arch_hppa, bfd_target_unknown_flavour, | |
122 | hppaobsd_core_osabi_sniffer); | |
123 | ||
124 | gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD_ELF, | |
125 | hppaobsd_init_abi); | |
126 | } |