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af5ca30d NH |
1 | /* Target-dependent code for NetBSD/hppa |
2 | ||
32d0add0 | 3 | Copyright (C) 2008-2015 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 | ||
25 | #include "trad-frame.h" | |
26 | #include "tramp-frame.h" | |
27 | ||
af5ca30d | 28 | #include "hppa-tdep.h" |
63807e1d | 29 | #include "hppabsd-tdep.h" |
af5ca30d NH |
30 | |
31 | /* From <machine/mcontext.h>. */ | |
32 | static int hppanbsd_mc_reg_offset[] = | |
33 | { | |
34 | /* r0 ... r31 */ | |
35 | -1, 1 * 4, 2 * 4, 3 * 4, | |
36 | 4 * 4, 5 * 4, 6 * 4, 7 * 4, | |
37 | 8 * 4, 9 * 4, 10 * 4, 11 * 4, | |
38 | 12 * 4, 13 * 4, 14 * 4, 15 * 4, | |
39 | 16 * 4, 17 * 4, 18 * 4, 19 * 4, | |
40 | 20 * 4, 21 * 4, 22 * 4, 23 * 4, | |
41 | 24 * 4, 25 * 4, 26 * 4, 27 * 4, | |
42 | 28 * 4, 29 * 4, 30 * 4, 31 * 4, | |
43 | ||
44 | 32 * 4, /* HPPA_SAR_REGNUM */ | |
45 | 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */ | |
46 | 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */ | |
47 | 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */ | |
48 | 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */ | |
49 | -1, /* HPPA_EIEM_REGNUM */ | |
50 | -1, /* HPPA_IIR_REGNUM */ | |
51 | -1, /* HPPA_ISR_REGNUM */ | |
52 | -1, /* HPPA_IOR_REGNUM */ | |
53 | 0 * 4, /* HPPA_IPSW_REGNUM */ | |
54 | -1, /* spare? */ | |
55 | 41 * 4, /* HPPA_SR4_REGNUM */ | |
56 | 37 * 4, /* sr0 */ | |
57 | 38 * 4, /* sr1 */ | |
58 | 39 * 4, /* sr2 */ | |
59 | 40 * 4, /* sr3 */ | |
60 | ||
61 | /* more tbd */ | |
62 | }; | |
63 | ||
64 | static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *, | |
65 | struct frame_info *, | |
66 | struct trad_frame_cache *, | |
67 | CORE_ADDR); | |
68 | ||
69 | static const struct tramp_frame hppanbsd_sigtramp_si4 = | |
70 | { | |
71 | SIGTRAMP_FRAME, | |
72 | 4, | |
73 | { | |
74 | { 0xc7d7c012, -1 }, /* bb,>=,n %arg3, 30, 1f */ | |
75 | { 0xd6e01c1e, -1 }, /* depwi 0,31,2,%arg3 */ | |
76 | { 0x0ee81093, -1 }, /* ldw 4(%arg3), %r19 */ | |
77 | { 0x0ee01097, -1 }, /* ldw 0(%arg3), %arg3 */ | |
78 | /* 1: */ | |
79 | { 0xe8404000, -1 }, /* blr %r0, %rp */ | |
80 | { 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */ | |
81 | { 0x08000240, -1 }, /* nop */ | |
82 | ||
83 | { 0x0803025a, -1 }, /* copy %r3, %arg0 */ | |
84 | { 0x20200801, -1 }, /* ldil -40000000, %r1 */ | |
85 | { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */ | |
86 | { 0x34160268, -1 }, /* ldi 134, %t1 ; SYS_setcontext */ | |
87 | ||
88 | { 0x081c025a, -1 }, /* copy ret0, %arg0 */ | |
89 | { 0x20200801, -1 }, /* ldil -40000000, %r1 */ | |
90 | { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */ | |
91 | { 0x34160002, -1 }, /* ldi 1, %t1 ; SYS_exit */ | |
92 | { TRAMP_SENTINEL_INSN, -1 } | |
93 | }, | |
94 | hppanbsd_sigtramp_cache_init | |
95 | }; | |
96 | ||
97 | ||
98 | static void | |
99 | hppanbsd_sigtramp_cache_init (const struct tramp_frame *self, | |
5366653e | 100 | struct frame_info *this_frame, |
af5ca30d NH |
101 | struct trad_frame_cache *this_cache, |
102 | CORE_ADDR func) | |
103 | { | |
5366653e | 104 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
af5ca30d | 105 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
5366653e | 106 | CORE_ADDR sp = get_frame_register_unsigned (this_frame, HPPA_SP_REGNUM); |
af5ca30d NH |
107 | CORE_ADDR base; |
108 | int *reg_offset; | |
109 | int num_regs; | |
110 | int i; | |
111 | ||
112 | reg_offset = hppanbsd_mc_reg_offset; | |
113 | num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset); | |
114 | ||
115 | /* frame pointer */ | |
116 | base = sp - 0x280; | |
117 | /* offsetof(struct sigframe_siginfo, sf_uc) = 128 */ | |
118 | base += 128; | |
119 | /* offsetof(ucontext_t, uc_mcontext) == 40 */ | |
120 | base += 40; | |
121 | ||
122 | for (i = 0; i < num_regs; i++) | |
123 | if (reg_offset[i] != -1) | |
124 | trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]); | |
125 | ||
126 | /* Construct the frame ID using the function start. */ | |
127 | trad_frame_set_id (this_cache, frame_id_build (sp, func)); | |
128 | } | |
129 | ||
130 | /* Core file support. */ | |
131 | ||
132 | /* Sizeof `struct reg' in <machine/reg.h>. */ | |
133 | #define HPPANBSD_SIZEOF_GREGS (44 * 4) | |
134 | ||
135 | static int hppanbsd_reg_offset[] = | |
136 | { | |
137 | /* r0 ... r31 */ | |
138 | -1, 1 * 4, 2 * 4, 3 * 4, | |
139 | 4 * 4, 5 * 4, 6 * 4, 7 * 4, | |
140 | 8 * 4, 9 * 4, 10 * 4, 11 * 4, | |
141 | 12 * 4, 13 * 4, 14 * 4, 15 * 4, | |
142 | 16 * 4, 17 * 4, 18 * 4, 19 * 4, | |
143 | 20 * 4, 21 * 4, 22 * 4, 23 * 4, | |
144 | 24 * 4, 25 * 4, 26 * 4, 27 * 4, | |
145 | 28 * 4, 29 * 4, 30 * 4, 31 * 4, | |
146 | ||
147 | 32 * 4, /* HPPA_SAR_REGNUM */ | |
148 | 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */ | |
149 | 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */ | |
150 | 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */ | |
151 | 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */ | |
152 | -1, /* HPPA_EIEM_REGNUM */ | |
153 | -1, /* HPPA_IIR_REGNUM */ | |
154 | -1, /* HPPA_ISR_REGNUM */ | |
155 | -1, /* HPPA_IOR_REGNUM */ | |
156 | 0 * 4, /* HPPA_IPSW_REGNUM */ | |
157 | }; | |
158 | ||
159 | /* Supply register REGNUM from the buffer specified by GREGS and LEN | |
160 | in the general-purpose register set REGSET to register cache | |
161 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ | |
162 | ||
163 | static void | |
1777feb0 MS |
164 | hppanbsd_supply_gregset (const struct regset *regset, |
165 | struct regcache *regcache, | |
166 | int regnum, const void *gregs, size_t len) | |
af5ca30d NH |
167 | { |
168 | const gdb_byte *regs = gregs; | |
af5ca30d NH |
169 | int i; |
170 | ||
171 | gdb_assert (len >= HPPANBSD_SIZEOF_GREGS); | |
172 | ||
173 | for (i = 0; i < ARRAY_SIZE (hppanbsd_reg_offset); i++) | |
174 | if (hppanbsd_reg_offset[i] != -1) | |
175 | if (regnum == -1 || regnum == i) | |
176 | regcache_raw_supply (regcache, i, regs + hppanbsd_reg_offset[i]); | |
177 | } | |
178 | ||
179 | /* NetBSD/hppa register set. */ | |
180 | ||
3ca7dae4 | 181 | static const struct regset hppanbsd_gregset = |
af5ca30d NH |
182 | { |
183 | NULL, | |
184 | hppanbsd_supply_gregset | |
185 | }; | |
186 | ||
50c5eb53 | 187 | /* Iterate over supported core file register note sections. */ |
af5ca30d | 188 | |
50c5eb53 AA |
189 | static void |
190 | hppanbsd_iterate_over_regset_sections (struct gdbarch *gdbarch, | |
191 | iterate_over_regset_sections_cb *cb, | |
192 | void *cb_data, | |
193 | const struct regcache *regcache) | |
af5ca30d | 194 | { |
50c5eb53 | 195 | cb (".reg", HPPANBSD_SIZEOF_GREGS, &hppanbsd_gregset, NULL, cb_data); |
af5ca30d NH |
196 | } |
197 | \f | |
af5ca30d NH |
198 | static void |
199 | hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
200 | { | |
201 | /* Obviously NetBSD is BSD-based. */ | |
202 | hppabsd_init_abi (info, gdbarch); | |
203 | ||
204 | /* Core file support. */ | |
50c5eb53 AA |
205 | set_gdbarch_iterate_over_regset_sections |
206 | (gdbarch, hppanbsd_iterate_over_regset_sections); | |
af5ca30d NH |
207 | |
208 | tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4); | |
209 | } | |
210 | \f | |
211 | ||
212 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
63807e1d | 213 | extern initialize_file_ftype _initialize_hppanbsd_tdep; |
af5ca30d NH |
214 | |
215 | void | |
216 | _initialize_hppanbsd_tdep (void) | |
217 | { | |
218 | gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF, | |
219 | hppanbsd_init_abi); | |
220 | } |