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386c036b MK |
1 | /* Target-dependent code for Solaris SPARC. |
2 | ||
b811d2c2 | 3 | Copyright (C) 2003-2020 Free Software Foundation, Inc. |
386c036b MK |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
386c036b MK |
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 | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
386c036b MK |
19 | |
20 | #include "defs.h" | |
21 | #include "frame.h" | |
22 | #include "frame-unwind.h" | |
23 | #include "gdbcore.h" | |
24 | #include "symtab.h" | |
25 | #include "objfiles.h" | |
26 | #include "osabi.h" | |
27 | #include "regcache.h" | |
ff1eb2b5 | 28 | #include "regset.h" |
386c036b MK |
29 | #include "target.h" |
30 | #include "trad-frame.h" | |
31 | ||
081bf9da | 32 | #include "sol2-tdep.h" |
386c036b | 33 | #include "sparc-tdep.h" |
70b216c8 | 34 | #include "solib-svr4.h" |
386c036b MK |
35 | |
36 | /* From <sys/regset.h>. */ | |
b4fd25c9 | 37 | const struct sparc_gregmap sparc32_sol2_gregmap = |
386c036b MK |
38 | { |
39 | 32 * 4, /* %psr */ | |
40 | 33 * 4, /* %pc */ | |
41 | 34 * 4, /* %npc */ | |
42 | 35 * 4, /* %y */ | |
43 | 36 * 4, /* %wim */ | |
44 | 37 * 4, /* %tbr */ | |
45 | 1 * 4, /* %g1 */ | |
46 | 16 * 4, /* %l0 */ | |
47 | }; | |
db75c717 | 48 | |
b4fd25c9 | 49 | const struct sparc_fpregmap sparc32_sol2_fpregmap = |
db75c717 DM |
50 | { |
51 | 0 * 4, /* %f0 */ | |
52 | 33 * 4, /* %fsr */ | |
53 | }; | |
ff1eb2b5 UW |
54 | |
55 | static void | |
56 | sparc32_sol2_supply_core_gregset (const struct regset *regset, | |
57 | struct regcache *regcache, | |
58 | int regnum, const void *gregs, size_t len) | |
59 | { | |
60 | sparc32_supply_gregset (&sparc32_sol2_gregmap, regcache, regnum, gregs); | |
61 | } | |
62 | ||
63 | static void | |
64 | sparc32_sol2_collect_core_gregset (const struct regset *regset, | |
65 | const struct regcache *regcache, | |
66 | int regnum, void *gregs, size_t len) | |
67 | { | |
68 | sparc32_collect_gregset (&sparc32_sol2_gregmap, regcache, regnum, gregs); | |
69 | } | |
70 | ||
71 | static void | |
72 | sparc32_sol2_supply_core_fpregset (const struct regset *regset, | |
73 | struct regcache *regcache, | |
74 | int regnum, const void *fpregs, size_t len) | |
75 | { | |
76 | sparc32_supply_fpregset (&sparc32_sol2_fpregmap, regcache, regnum, fpregs); | |
77 | } | |
78 | ||
79 | static void | |
80 | sparc32_sol2_collect_core_fpregset (const struct regset *regset, | |
81 | const struct regcache *regcache, | |
82 | int regnum, void *fpregs, size_t len) | |
83 | { | |
84 | sparc32_collect_fpregset (&sparc32_sol2_fpregmap, regcache, regnum, fpregs); | |
85 | } | |
86 | ||
87 | static const struct regset sparc32_sol2_gregset = | |
88 | { | |
89 | NULL, | |
90 | sparc32_sol2_supply_core_gregset, | |
91 | sparc32_sol2_collect_core_gregset | |
92 | }; | |
93 | ||
94 | static const struct regset sparc32_sol2_fpregset = | |
95 | { | |
96 | NULL, | |
97 | sparc32_sol2_supply_core_fpregset, | |
98 | sparc32_sol2_collect_core_fpregset | |
99 | }; | |
386c036b MK |
100 | \f |
101 | ||
386c036b | 102 | static struct sparc_frame_cache * |
236369e7 | 103 | sparc32_sol2_sigtramp_frame_cache (struct frame_info *this_frame, |
386c036b MK |
104 | void **this_cache) |
105 | { | |
106 | struct sparc_frame_cache *cache; | |
107 | CORE_ADDR mcontext_addr, addr; | |
108 | int regnum; | |
109 | ||
110 | if (*this_cache) | |
19ba03f4 | 111 | return (struct sparc_frame_cache *) *this_cache; |
386c036b | 112 | |
236369e7 | 113 | cache = sparc_frame_cache (this_frame, this_cache); |
386c036b MK |
114 | gdb_assert (cache == *this_cache); |
115 | ||
236369e7 | 116 | cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); |
386c036b MK |
117 | |
118 | /* The third argument is a pointer to an instance of `ucontext_t', | |
119 | which has a member `uc_mcontext' that contains the saved | |
120 | registers. */ | |
369c397b JB |
121 | regnum = |
122 | (cache->copied_regs_mask & 0x04) ? SPARC_I2_REGNUM : SPARC_O2_REGNUM; | |
236369e7 | 123 | mcontext_addr = get_frame_register_unsigned (this_frame, regnum) + 40; |
386c036b MK |
124 | |
125 | cache->saved_regs[SPARC32_PSR_REGNUM].addr = mcontext_addr + 0 * 4; | |
126 | cache->saved_regs[SPARC32_PC_REGNUM].addr = mcontext_addr + 1 * 4; | |
127 | cache->saved_regs[SPARC32_NPC_REGNUM].addr = mcontext_addr + 2 * 4; | |
128 | cache->saved_regs[SPARC32_Y_REGNUM].addr = mcontext_addr + 3 * 4; | |
129 | ||
130 | /* Since %g0 is always zero, keep the identity encoding. */ | |
131 | for (regnum = SPARC_G1_REGNUM, addr = mcontext_addr + 4 * 4; | |
132 | regnum <= SPARC_O7_REGNUM; regnum++, addr += 4) | |
133 | cache->saved_regs[regnum].addr = addr; | |
134 | ||
236369e7 | 135 | if (get_frame_memory_unsigned (this_frame, mcontext_addr + 19 * 4, 4)) |
386c036b MK |
136 | { |
137 | /* The register windows haven't been flushed. */ | |
138 | for (regnum = SPARC_L0_REGNUM; regnum <= SPARC_I7_REGNUM; regnum++) | |
139 | trad_frame_set_unknown (cache->saved_regs, regnum); | |
140 | } | |
141 | else | |
142 | { | |
143 | addr = cache->saved_regs[SPARC_SP_REGNUM].addr; | |
236369e7 | 144 | addr = get_frame_memory_unsigned (this_frame, addr, 4); |
386c036b MK |
145 | for (regnum = SPARC_L0_REGNUM; |
146 | regnum <= SPARC_I7_REGNUM; regnum++, addr += 4) | |
147 | cache->saved_regs[regnum].addr = addr; | |
148 | } | |
149 | ||
150 | return cache; | |
151 | } | |
152 | ||
153 | static void | |
236369e7 | 154 | sparc32_sol2_sigtramp_frame_this_id (struct frame_info *this_frame, |
386c036b MK |
155 | void **this_cache, |
156 | struct frame_id *this_id) | |
157 | { | |
158 | struct sparc_frame_cache *cache = | |
236369e7 | 159 | sparc32_sol2_sigtramp_frame_cache (this_frame, this_cache); |
386c036b MK |
160 | |
161 | (*this_id) = frame_id_build (cache->base, cache->pc); | |
162 | } | |
163 | ||
236369e7 JB |
164 | static struct value * |
165 | sparc32_sol2_sigtramp_frame_prev_register (struct frame_info *this_frame, | |
386c036b | 166 | void **this_cache, |
236369e7 | 167 | int regnum) |
386c036b MK |
168 | { |
169 | struct sparc_frame_cache *cache = | |
236369e7 | 170 | sparc32_sol2_sigtramp_frame_cache (this_frame, this_cache); |
386c036b | 171 | |
236369e7 | 172 | return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum); |
386c036b MK |
173 | } |
174 | ||
236369e7 JB |
175 | static int |
176 | sparc32_sol2_sigtramp_frame_sniffer (const struct frame_unwind *self, | |
177 | struct frame_info *this_frame, | |
178 | void **this_cache) | |
386c036b | 179 | { |
d412e696 | 180 | return sol2_sigtramp_p (this_frame); |
386c036b | 181 | } |
149ad273 | 182 | |
236369e7 JB |
183 | static const struct frame_unwind sparc32_sol2_sigtramp_frame_unwind = |
184 | { | |
185 | SIGTRAMP_FRAME, | |
8fbca658 | 186 | default_frame_unwind_stop_reason, |
236369e7 JB |
187 | sparc32_sol2_sigtramp_frame_this_id, |
188 | sparc32_sol2_sigtramp_frame_prev_register, | |
189 | NULL, | |
190 | sparc32_sol2_sigtramp_frame_sniffer | |
191 | }; | |
192 | ||
386c036b MK |
193 | \f |
194 | ||
a7e6196b | 195 | static void |
386c036b MK |
196 | sparc32_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
197 | { | |
198 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
199 | ||
ff1eb2b5 UW |
200 | tdep->gregset = &sparc32_sol2_gregset; |
201 | tdep->sizeof_gregset = 152; | |
202 | ||
203 | tdep->fpregset = &sparc32_sol2_fpregset; | |
204 | tdep->sizeof_fpregset = 400; | |
205 | ||
d412e696 | 206 | sol2_init_abi (info, gdbarch); |
149ad273 | 207 | |
386c036b | 208 | /* Solaris has SVR4-style shared libraries... */ |
386c036b | 209 | set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target); |
70b216c8 MK |
210 | set_solib_svr4_fetch_link_map_offsets |
211 | (gdbarch, svr4_ilp32_fetch_link_map_offsets); | |
386c036b MK |
212 | |
213 | /* ...which means that we need some special handling when doing | |
214 | prologue analysis. */ | |
215 | tdep->plt_entry_size = 12; | |
216 | ||
217 | /* Solaris has kernel-assisted single-stepping support. */ | |
218 | set_gdbarch_software_single_step (gdbarch, NULL); | |
219 | ||
236369e7 | 220 | frame_unwind_append_unwinder (gdbarch, &sparc32_sol2_sigtramp_frame_unwind); |
386c036b | 221 | } |
386c036b | 222 | |
6c265988 | 223 | void _initialize_sparc_sol2_tdep (); |
386c036b | 224 | void |
6c265988 | 225 | _initialize_sparc_sol2_tdep () |
386c036b MK |
226 | { |
227 | gdbarch_register_osabi (bfd_arch_sparc, 0, | |
228 | GDB_OSABI_SOLARIS, sparc32_sol2_init_abi); | |
229 | } |