Commit | Line | Data |
---|---|---|
af5ca30d NH |
1 | /* Target-dependent code for NetBSD/hppa |
2 | ||
3 | Copyright (C) 2008 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., 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" | |
34 | ||
35 | /* From <machine/mcontext.h>. */ | |
36 | static int hppanbsd_mc_reg_offset[] = | |
37 | { | |
38 | /* r0 ... r31 */ | |
39 | -1, 1 * 4, 2 * 4, 3 * 4, | |
40 | 4 * 4, 5 * 4, 6 * 4, 7 * 4, | |
41 | 8 * 4, 9 * 4, 10 * 4, 11 * 4, | |
42 | 12 * 4, 13 * 4, 14 * 4, 15 * 4, | |
43 | 16 * 4, 17 * 4, 18 * 4, 19 * 4, | |
44 | 20 * 4, 21 * 4, 22 * 4, 23 * 4, | |
45 | 24 * 4, 25 * 4, 26 * 4, 27 * 4, | |
46 | 28 * 4, 29 * 4, 30 * 4, 31 * 4, | |
47 | ||
48 | 32 * 4, /* HPPA_SAR_REGNUM */ | |
49 | 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */ | |
50 | 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */ | |
51 | 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */ | |
52 | 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */ | |
53 | -1, /* HPPA_EIEM_REGNUM */ | |
54 | -1, /* HPPA_IIR_REGNUM */ | |
55 | -1, /* HPPA_ISR_REGNUM */ | |
56 | -1, /* HPPA_IOR_REGNUM */ | |
57 | 0 * 4, /* HPPA_IPSW_REGNUM */ | |
58 | -1, /* spare? */ | |
59 | 41 * 4, /* HPPA_SR4_REGNUM */ | |
60 | 37 * 4, /* sr0 */ | |
61 | 38 * 4, /* sr1 */ | |
62 | 39 * 4, /* sr2 */ | |
63 | 40 * 4, /* sr3 */ | |
64 | ||
65 | /* more tbd */ | |
66 | }; | |
67 | ||
68 | static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *, | |
69 | struct frame_info *, | |
70 | struct trad_frame_cache *, | |
71 | CORE_ADDR); | |
72 | ||
73 | static const struct tramp_frame hppanbsd_sigtramp_si4 = | |
74 | { | |
75 | SIGTRAMP_FRAME, | |
76 | 4, | |
77 | { | |
78 | { 0xc7d7c012, -1 }, /* bb,>=,n %arg3, 30, 1f */ | |
79 | { 0xd6e01c1e, -1 }, /* depwi 0,31,2,%arg3 */ | |
80 | { 0x0ee81093, -1 }, /* ldw 4(%arg3), %r19 */ | |
81 | { 0x0ee01097, -1 }, /* ldw 0(%arg3), %arg3 */ | |
82 | /* 1: */ | |
83 | { 0xe8404000, -1 }, /* blr %r0, %rp */ | |
84 | { 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */ | |
85 | { 0x08000240, -1 }, /* nop */ | |
86 | ||
87 | { 0x0803025a, -1 }, /* copy %r3, %arg0 */ | |
88 | { 0x20200801, -1 }, /* ldil -40000000, %r1 */ | |
89 | { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */ | |
90 | { 0x34160268, -1 }, /* ldi 134, %t1 ; SYS_setcontext */ | |
91 | ||
92 | { 0x081c025a, -1 }, /* copy ret0, %arg0 */ | |
93 | { 0x20200801, -1 }, /* ldil -40000000, %r1 */ | |
94 | { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */ | |
95 | { 0x34160002, -1 }, /* ldi 1, %t1 ; SYS_exit */ | |
96 | { TRAMP_SENTINEL_INSN, -1 } | |
97 | }, | |
98 | hppanbsd_sigtramp_cache_init | |
99 | }; | |
100 | ||
101 | ||
102 | static void | |
103 | hppanbsd_sigtramp_cache_init (const struct tramp_frame *self, | |
5366653e | 104 | struct frame_info *this_frame, |
af5ca30d NH |
105 | struct trad_frame_cache *this_cache, |
106 | CORE_ADDR func) | |
107 | { | |
5366653e | 108 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
af5ca30d | 109 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
5366653e | 110 | CORE_ADDR sp = get_frame_register_unsigned (this_frame, HPPA_SP_REGNUM); |
af5ca30d NH |
111 | CORE_ADDR base; |
112 | int *reg_offset; | |
113 | int num_regs; | |
114 | int i; | |
115 | ||
116 | reg_offset = hppanbsd_mc_reg_offset; | |
117 | num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset); | |
118 | ||
119 | /* frame pointer */ | |
120 | base = sp - 0x280; | |
121 | /* offsetof(struct sigframe_siginfo, sf_uc) = 128 */ | |
122 | base += 128; | |
123 | /* offsetof(ucontext_t, uc_mcontext) == 40 */ | |
124 | base += 40; | |
125 | ||
126 | for (i = 0; i < num_regs; i++) | |
127 | if (reg_offset[i] != -1) | |
128 | trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]); | |
129 | ||
130 | /* Construct the frame ID using the function start. */ | |
131 | trad_frame_set_id (this_cache, frame_id_build (sp, func)); | |
132 | } | |
133 | ||
134 | /* Core file support. */ | |
135 | ||
136 | /* Sizeof `struct reg' in <machine/reg.h>. */ | |
137 | #define HPPANBSD_SIZEOF_GREGS (44 * 4) | |
138 | ||
139 | static int hppanbsd_reg_offset[] = | |
140 | { | |
141 | /* r0 ... r31 */ | |
142 | -1, 1 * 4, 2 * 4, 3 * 4, | |
143 | 4 * 4, 5 * 4, 6 * 4, 7 * 4, | |
144 | 8 * 4, 9 * 4, 10 * 4, 11 * 4, | |
145 | 12 * 4, 13 * 4, 14 * 4, 15 * 4, | |
146 | 16 * 4, 17 * 4, 18 * 4, 19 * 4, | |
147 | 20 * 4, 21 * 4, 22 * 4, 23 * 4, | |
148 | 24 * 4, 25 * 4, 26 * 4, 27 * 4, | |
149 | 28 * 4, 29 * 4, 30 * 4, 31 * 4, | |
150 | ||
151 | 32 * 4, /* HPPA_SAR_REGNUM */ | |
152 | 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */ | |
153 | 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */ | |
154 | 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */ | |
155 | 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */ | |
156 | -1, /* HPPA_EIEM_REGNUM */ | |
157 | -1, /* HPPA_IIR_REGNUM */ | |
158 | -1, /* HPPA_ISR_REGNUM */ | |
159 | -1, /* HPPA_IOR_REGNUM */ | |
160 | 0 * 4, /* HPPA_IPSW_REGNUM */ | |
161 | }; | |
162 | ||
163 | /* Supply register REGNUM from the buffer specified by GREGS and LEN | |
164 | in the general-purpose register set REGSET to register cache | |
165 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ | |
166 | ||
167 | static void | |
168 | hppanbsd_supply_gregset (const struct regset *regset, struct regcache *regcache, | |
169 | int regnum, const void *gregs, size_t len) | |
170 | { | |
171 | const gdb_byte *regs = gregs; | |
172 | size_t offset; | |
173 | int i; | |
174 | ||
175 | gdb_assert (len >= HPPANBSD_SIZEOF_GREGS); | |
176 | ||
177 | for (i = 0; i < ARRAY_SIZE (hppanbsd_reg_offset); i++) | |
178 | if (hppanbsd_reg_offset[i] != -1) | |
179 | if (regnum == -1 || regnum == i) | |
180 | regcache_raw_supply (regcache, i, regs + hppanbsd_reg_offset[i]); | |
181 | } | |
182 | ||
183 | /* NetBSD/hppa register set. */ | |
184 | ||
185 | static struct regset hppanbsd_gregset = | |
186 | { | |
187 | NULL, | |
188 | hppanbsd_supply_gregset | |
189 | }; | |
190 | ||
191 | /* Return the appropriate register set for the core section identified | |
192 | by SECT_NAME and SECT_SIZE. */ | |
193 | ||
194 | static const struct regset * | |
195 | hppanbsd_regset_from_core_section (struct gdbarch *gdbarch, | |
196 | const char *sect_name, size_t sect_size) | |
197 | { | |
198 | if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPANBSD_SIZEOF_GREGS) | |
199 | return &hppanbsd_gregset; | |
200 | ||
201 | return NULL; | |
202 | } | |
203 | \f | |
204 | void hppabsd_init_abi (struct gdbarch_info, struct gdbarch *); | |
205 | ||
206 | static void | |
207 | hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
208 | { | |
209 | /* Obviously NetBSD is BSD-based. */ | |
210 | hppabsd_init_abi (info, gdbarch); | |
211 | ||
212 | /* Core file support. */ | |
213 | set_gdbarch_regset_from_core_section | |
214 | (gdbarch, hppanbsd_regset_from_core_section); | |
215 | ||
216 | tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4); | |
217 | } | |
218 | \f | |
219 | ||
220 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
221 | void _initialize_hppabsd_tdep (void); | |
222 | ||
223 | void | |
224 | _initialize_hppanbsd_tdep (void) | |
225 | { | |
226 | gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF, | |
227 | hppanbsd_init_abi); | |
228 | } |