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abc08782 MK |
1 | /* Target-dependent code for OpenBSD/mips64. |
2 | ||
3 | Copyright 2004 Free Software Foundation, 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 "osabi.h" | |
24 | #include "regcache.h" | |
25 | #include "regset.h" | |
26 | ||
27 | #include "gdb_string.h" | |
28 | ||
29 | #include "mips-tdep.h" | |
30 | #include "solib-svr4.h" | |
31 | ||
32 | #define MIPS64OBSD_NUM_REGS 73 | |
33 | ||
34 | /* Core file support. */ | |
35 | ||
36 | /* Supply register REGNUM from the buffer specified by GREGS and LEN | |
37 | in the general-purpose register set REGSET to register cache | |
38 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ | |
39 | ||
40 | static void | |
41 | mips64obsd_supply_gregset (const struct regset *regset, | |
42 | struct regcache *regcache, int regnum, | |
43 | const void *gregs, size_t len) | |
44 | { | |
45 | const char *regs = gregs; | |
46 | int i; | |
47 | ||
48 | for (i = 0; i < MIPS64OBSD_NUM_REGS; i++) | |
49 | { | |
50 | if (regnum == i || regnum == -1) | |
51 | regcache_raw_supply (regcache, i, regs + i * 8); | |
52 | } | |
53 | } | |
54 | ||
55 | /* OpenBSD/mips64 register set. */ | |
56 | ||
57 | static struct regset mips64obsd_gregset = | |
58 | { | |
59 | NULL, | |
60 | mips64obsd_supply_gregset | |
61 | }; | |
62 | ||
63 | /* Return the appropriate register set for the core section identified | |
64 | by SECT_NAME and SECT_SIZE. */ | |
65 | ||
66 | static const struct regset * | |
67 | mips64obsd_regset_from_core_section (struct gdbarch *gdbarch, | |
68 | const char *sect_name, size_t sect_size) | |
69 | { | |
70 | if (strcmp (sect_name, ".reg") == 0 && sect_size >= MIPS64OBSD_NUM_REGS * 8) | |
71 | return &mips64obsd_gregset; | |
72 | ||
73 | return NULL; | |
74 | } | |
75 | \f | |
76 | ||
77 | static void | |
78 | mips64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
79 | { | |
80 | set_gdbarch_regset_from_core_section | |
81 | (gdbarch, mips64obsd_regset_from_core_section); | |
82 | ||
83 | set_gdbarch_software_single_step (gdbarch, mips_software_single_step); | |
84 | ||
85 | set_solib_svr4_fetch_link_map_offsets | |
86 | (gdbarch, svr4_lp64_fetch_link_map_offsets); | |
87 | } | |
88 | ||
89 | \f | |
90 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
91 | void _initialize_mips64obsd_tdep (void); | |
92 | ||
93 | void | |
94 | _initialize_mips64obsd_tdep (void) | |
95 | { | |
96 | gdbarch_register_osabi (bfd_arch_mips, 0, GDB_OSABI_OPENBSD_ELF, | |
97 | mips64obsd_init_abi); | |
98 | } |