Commit | Line | Data |
---|---|---|
af5ca30d NH |
1 | /* Target-dependent code for NetBSD/hppa |
2 | ||
0fb0cc75 | 3 | Copyright (C) 2008, 2009 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 | |
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., 51 Franklin Street, Fifth Floor, | |
20 | Boston, MA 02110-1301, USA. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "osabi.h" | |
24 | #include "regcache.h" | |
25 | #include "regset.h" | |
26 | ||
27 | #include "trad-frame.h" | |
28 | #include "tramp-frame.h" | |
29 | ||
30 | #include "gdb_assert.h" | |
31 | #include "gdb_string.h" | |
32 | ||
33 | #include "hppa-tdep.h" | |
63807e1d | 34 | #include "hppabsd-tdep.h" |
af5ca30d NH |
35 | |
36 | /* From <machine/mcontext.h>. */ | |
37 | static int hppanbsd_mc_reg_offset[] = | |
38 | { | |
39 | /* r0 ... r31 */ | |
40 | -1, 1 * 4, 2 * 4, 3 * 4, | |
41 | 4 * 4, 5 * 4, 6 * 4, 7 * 4, | |
42 | 8 * 4, 9 * 4, 10 * 4, 11 * 4, | |
43 | 12 * 4, 13 * 4, 14 * 4, 15 * 4, | |
44 | 16 * 4, 17 * 4, 18 * 4, 19 * 4, | |
45 | 20 * 4, 21 * 4, 22 * 4, 23 * 4, | |
46 | 24 * 4, 25 * 4, 26 * 4, 27 * 4, | |
47 | 28 * 4, 29 * 4, 30 * 4, 31 * 4, | |
48 | ||
49 | 32 * 4, /* HPPA_SAR_REGNUM */ | |
50 | 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */ | |
51 | 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */ | |
52 | 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */ | |
53 | 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */ | |
54 | -1, /* HPPA_EIEM_REGNUM */ | |
55 | -1, /* HPPA_IIR_REGNUM */ | |
56 | -1, /* HPPA_ISR_REGNUM */ | |
57 | -1, /* HPPA_IOR_REGNUM */ | |
58 | 0 * 4, /* HPPA_IPSW_REGNUM */ | |
59 | -1, /* spare? */ | |
60 | 41 * 4, /* HPPA_SR4_REGNUM */ | |
61 | 37 * 4, /* sr0 */ | |
62 | 38 * 4, /* sr1 */ | |
63 | 39 * 4, /* sr2 */ | |
64 | 40 * 4, /* sr3 */ | |
65 | ||
66 | /* more tbd */ | |
67 | }; | |
68 | ||
69 | static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *, | |
70 | struct frame_info *, | |
71 | struct trad_frame_cache *, | |
72 | CORE_ADDR); | |
73 | ||
74 | static const struct tramp_frame hppanbsd_sigtramp_si4 = | |
75 | { | |
76 | SIGTRAMP_FRAME, | |
77 | 4, | |
78 | { | |
79 | { 0xc7d7c012, -1 }, /* bb,>=,n %arg3, 30, 1f */ | |
80 | { 0xd6e01c1e, -1 }, /* depwi 0,31,2,%arg3 */ | |
81 | { 0x0ee81093, -1 }, /* ldw 4(%arg3), %r19 */ | |
82 | { 0x0ee01097, -1 }, /* ldw 0(%arg3), %arg3 */ | |
83 | /* 1: */ | |
84 | { 0xe8404000, -1 }, /* blr %r0, %rp */ | |
85 | { 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */ | |
86 | { 0x08000240, -1 }, /* nop */ | |
87 | ||
88 | { 0x0803025a, -1 }, /* copy %r3, %arg0 */ | |
89 | { 0x20200801, -1 }, /* ldil -40000000, %r1 */ | |
90 | { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */ | |
91 | { 0x34160268, -1 }, /* ldi 134, %t1 ; SYS_setcontext */ | |
92 | ||
93 | { 0x081c025a, -1 }, /* copy ret0, %arg0 */ | |
94 | { 0x20200801, -1 }, /* ldil -40000000, %r1 */ | |
95 | { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */ | |
96 | { 0x34160002, -1 }, /* ldi 1, %t1 ; SYS_exit */ | |
97 | { TRAMP_SENTINEL_INSN, -1 } | |
98 | }, | |
99 | hppanbsd_sigtramp_cache_init | |
100 | }; | |
101 | ||
102 | ||
103 | static void | |
104 | hppanbsd_sigtramp_cache_init (const struct tramp_frame *self, | |
5366653e | 105 | struct frame_info *this_frame, |
af5ca30d NH |
106 | struct trad_frame_cache *this_cache, |
107 | CORE_ADDR func) | |
108 | { | |
5366653e | 109 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
af5ca30d | 110 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
5366653e | 111 | CORE_ADDR sp = get_frame_register_unsigned (this_frame, HPPA_SP_REGNUM); |
af5ca30d NH |
112 | CORE_ADDR base; |
113 | int *reg_offset; | |
114 | int num_regs; | |
115 | int i; | |
116 | ||
117 | reg_offset = hppanbsd_mc_reg_offset; | |
118 | num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset); | |
119 | ||
120 | /* frame pointer */ | |
121 | base = sp - 0x280; | |
122 | /* offsetof(struct sigframe_siginfo, sf_uc) = 128 */ | |
123 | base += 128; | |
124 | /* offsetof(ucontext_t, uc_mcontext) == 40 */ | |
125 | base += 40; | |
126 | ||
127 | for (i = 0; i < num_regs; i++) | |
128 | if (reg_offset[i] != -1) | |
129 | trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]); | |
130 | ||
131 | /* Construct the frame ID using the function start. */ | |
132 | trad_frame_set_id (this_cache, frame_id_build (sp, func)); | |
133 | } | |
134 | ||
135 | /* Core file support. */ | |
136 | ||
137 | /* Sizeof `struct reg' in <machine/reg.h>. */ | |
138 | #define HPPANBSD_SIZEOF_GREGS (44 * 4) | |
139 | ||
140 | static int hppanbsd_reg_offset[] = | |
141 | { | |
142 | /* r0 ... r31 */ | |
143 | -1, 1 * 4, 2 * 4, 3 * 4, | |
144 | 4 * 4, 5 * 4, 6 * 4, 7 * 4, | |
145 | 8 * 4, 9 * 4, 10 * 4, 11 * 4, | |
146 | 12 * 4, 13 * 4, 14 * 4, 15 * 4, | |
147 | 16 * 4, 17 * 4, 18 * 4, 19 * 4, | |
148 | 20 * 4, 21 * 4, 22 * 4, 23 * 4, | |
149 | 24 * 4, 25 * 4, 26 * 4, 27 * 4, | |
150 | 28 * 4, 29 * 4, 30 * 4, 31 * 4, | |
151 | ||
152 | 32 * 4, /* HPPA_SAR_REGNUM */ | |
153 | 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */ | |
154 | 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */ | |
155 | 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */ | |
156 | 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */ | |
157 | -1, /* HPPA_EIEM_REGNUM */ | |
158 | -1, /* HPPA_IIR_REGNUM */ | |
159 | -1, /* HPPA_ISR_REGNUM */ | |
160 | -1, /* HPPA_IOR_REGNUM */ | |
161 | 0 * 4, /* HPPA_IPSW_REGNUM */ | |
162 | }; | |
163 | ||
164 | /* Supply register REGNUM from the buffer specified by GREGS and LEN | |
165 | in the general-purpose register set REGSET to register cache | |
166 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ | |
167 | ||
168 | static void | |
169 | hppanbsd_supply_gregset (const struct regset *regset, struct regcache *regcache, | |
170 | int regnum, const void *gregs, size_t len) | |
171 | { | |
172 | const gdb_byte *regs = gregs; | |
173 | size_t offset; | |
174 | int i; | |
175 | ||
176 | gdb_assert (len >= HPPANBSD_SIZEOF_GREGS); | |
177 | ||
178 | for (i = 0; i < ARRAY_SIZE (hppanbsd_reg_offset); i++) | |
179 | if (hppanbsd_reg_offset[i] != -1) | |
180 | if (regnum == -1 || regnum == i) | |
181 | regcache_raw_supply (regcache, i, regs + hppanbsd_reg_offset[i]); | |
182 | } | |
183 | ||
184 | /* NetBSD/hppa register set. */ | |
185 | ||
186 | static struct regset hppanbsd_gregset = | |
187 | { | |
188 | NULL, | |
189 | hppanbsd_supply_gregset | |
190 | }; | |
191 | ||
192 | /* Return the appropriate register set for the core section identified | |
193 | by SECT_NAME and SECT_SIZE. */ | |
194 | ||
195 | static const struct regset * | |
196 | hppanbsd_regset_from_core_section (struct gdbarch *gdbarch, | |
197 | const char *sect_name, size_t sect_size) | |
198 | { | |
199 | if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPANBSD_SIZEOF_GREGS) | |
200 | return &hppanbsd_gregset; | |
201 | ||
202 | return NULL; | |
203 | } | |
204 | \f | |
af5ca30d NH |
205 | static void |
206 | hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
207 | { | |
208 | /* Obviously NetBSD is BSD-based. */ | |
209 | hppabsd_init_abi (info, gdbarch); | |
210 | ||
211 | /* Core file support. */ | |
212 | set_gdbarch_regset_from_core_section | |
213 | (gdbarch, hppanbsd_regset_from_core_section); | |
214 | ||
215 | tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4); | |
216 | } | |
217 | \f | |
218 | ||
219 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
63807e1d | 220 | extern initialize_file_ftype _initialize_hppanbsd_tdep; |
af5ca30d NH |
221 | |
222 | void | |
223 | _initialize_hppanbsd_tdep (void) | |
224 | { | |
225 | gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF, | |
226 | hppanbsd_init_abi); | |
227 | } |