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sparc-sol2-tdep.c
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1/* Target-dependent code for Solaris SPARC.
2
3 Copyright (C) 2003-2023 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 3 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, see <http://www.gnu.org/licenses/>. */
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"
28#include "regset.h"
29#include "target.h"
30#include "trad-frame.h"
31
32#include "sol2-tdep.h"
33#include "sparc-tdep.h"
34#include "solib-svr4.h"
35
36/* From <sys/regset.h>. */
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};
48
50{
51 0 * 4, /* %f0 */
52 33 * 4, /* %fsr */
53};
54
55static void
57 struct regcache *regcache,
58 int regnum, const void *gregs, size_t len)
59{
61}
62
63static void
65 const struct regcache *regcache,
66 int regnum, void *gregs, size_t len)
67{
69}
70
71static void
73 struct regcache *regcache,
74 int regnum, const void *fpregs, size_t len)
75{
77}
78
79static void
81 const struct regcache *regcache,
82 int regnum, void *fpregs, size_t len)
83{
85}
86
93
100
101
102static struct sparc_frame_cache *
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)
111 return (struct sparc_frame_cache *) *this_cache;
112
113 cache = sparc_frame_cache (this_frame, this_cache);
114 gdb_assert (cache == *this_cache);
115
116 cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
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. */
121 regnum =
123 mcontext_addr = get_frame_register_unsigned (this_frame, regnum) + 40;
124
125 cache->saved_regs[SPARC32_PSR_REGNUM].set_addr (mcontext_addr + 0 * 4);
126 cache->saved_regs[SPARC32_PC_REGNUM].set_addr (mcontext_addr + 1 * 4);
127 cache->saved_regs[SPARC32_NPC_REGNUM].set_addr (mcontext_addr + 2 * 4);
128 cache->saved_regs[SPARC32_Y_REGNUM].set_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].set_addr (addr);
134
135 if (get_frame_memory_unsigned (this_frame, mcontext_addr + 19 * 4, 4))
136 {
137 /* The register windows haven't been flushed. */
139 cache->saved_regs[regnum].set_unknown ();
140 }
141 else
142 {
143 addr = cache->saved_regs[SPARC_SP_REGNUM].addr ();
144 addr = get_frame_memory_unsigned (this_frame, addr, 4);
145 for (regnum = SPARC_L0_REGNUM;
146 regnum <= SPARC_I7_REGNUM; regnum++, addr += 4)
147 cache->saved_regs[regnum].set_addr (addr);
148 }
149
150 return cache;
151}
152
153static void
155 void **this_cache,
156 struct frame_id *this_id)
157{
158 struct sparc_frame_cache *cache =
159 sparc32_sol2_sigtramp_frame_cache (this_frame, this_cache);
160
161 (*this_id) = frame_id_build (cache->base, cache->pc);
162}
163
164static struct value *
166 void **this_cache,
167 int regnum)
168{
169 struct sparc_frame_cache *cache =
170 sparc32_sol2_sigtramp_frame_cache (this_frame, this_cache);
171
172 return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum);
173}
174
175static int
177 frame_info_ptr this_frame,
178 void **this_cache)
179{
180 return sol2_sigtramp_p (this_frame);
181}
182
193
194
195
196static void
198{
199 sparc_gdbarch_tdep *tdep = gdbarch_tdep<sparc_gdbarch_tdep> (gdbarch);
200
202 tdep->sizeof_gregset = 152;
203
205 tdep->sizeof_fpregset = 400;
206
207 sol2_init_abi (info, gdbarch);
208
209 /* Solaris has SVR4-style shared libraries... */
213
214 /* ...which means that we need some special handling when doing
215 prologue analysis. */
216 tdep->plt_entry_size = 12;
217
218 /* Solaris has kernel-assisted single-stepping support. */
220
222}
223
225void
int regnum
enum unwind_stop_reason default_frame_unwind_stop_reason(frame_info_ptr this_frame, void **this_cache)
void frame_unwind_append_unwinder(struct gdbarch *gdbarch, const struct frame_unwind *unwinder)
ULONGEST get_frame_register_unsigned(frame_info_ptr frame, int regnum)
Definition frame.c:1399
struct frame_id frame_id_build(CORE_ADDR stack_addr, CORE_ADDR code_addr)
Definition frame.c:736
ULONGEST get_frame_memory_unsigned(frame_info_ptr this_frame, CORE_ADDR addr, int len)
Definition frame.c:3007
@ SIGTRAMP_FRAME
Definition frame.h:198
void set_gdbarch_software_single_step(struct gdbarch *gdbarch, gdbarch_software_single_step_ftype *software_single_step)
void set_gdbarch_skip_trampoline_code(struct gdbarch *gdbarch, gdbarch_skip_trampoline_code_ftype *skip_trampoline_code)
CORE_ADDR find_solib_trampoline_target(frame_info_ptr frame, CORE_ADDR pc)
Definition minsyms.c:1554
void gdbarch_register_osabi(enum bfd_architecture arch, unsigned long machine, enum gdb_osabi osabi, void(*init_osabi)(struct gdbarch_info, struct gdbarch *))
Definition osabi.c:146
@ GDB_OSABI_SOLARIS
Definition osabi.h:31
void sol2_init_abi(struct gdbarch_info info, struct gdbarch *gdbarch)
Definition sol2-tdep.c:105
int sol2_sigtramp_p(frame_info_ptr this_frame)
Definition sol2-tdep.c:55
void set_solib_svr4_fetch_link_map_offsets(struct gdbarch *gdbarch, struct link_map_offsets *(*flmo)(void))
struct link_map_offsets * svr4_ilp32_fetch_link_map_offsets(void)
void _initialize_sparc_sol2_tdep()
static const struct regset sparc32_sol2_fpregset
static struct value * sparc32_sol2_sigtramp_frame_prev_register(frame_info_ptr this_frame, void **this_cache, int regnum)
static int sparc32_sol2_sigtramp_frame_sniffer(const struct frame_unwind *self, frame_info_ptr this_frame, void **this_cache)
static void sparc32_sol2_init_abi(struct gdbarch_info info, struct gdbarch *gdbarch)
static struct sparc_frame_cache * sparc32_sol2_sigtramp_frame_cache(frame_info_ptr this_frame, void **this_cache)
static void sparc32_sol2_supply_core_fpregset(const struct regset *regset, struct regcache *regcache, int regnum, const void *fpregs, size_t len)
static void sparc32_sol2_collect_core_gregset(const struct regset *regset, const struct regcache *regcache, int regnum, void *gregs, size_t len)
static const struct regset sparc32_sol2_gregset
static const struct frame_unwind sparc32_sol2_sigtramp_frame_unwind
const struct sparc_gregmap sparc32_sol2_gregmap
static void sparc32_sol2_supply_core_gregset(const struct regset *regset, struct regcache *regcache, int regnum, const void *gregs, size_t len)
static void sparc32_sol2_collect_core_fpregset(const struct regset *regset, const struct regcache *regcache, int regnum, void *fpregs, size_t len)
const struct sparc_fpregmap sparc32_sol2_fpregmap
static void sparc32_sol2_sigtramp_frame_this_id(frame_info_ptr this_frame, void **this_cache, struct frame_id *this_id)
struct sparc_frame_cache * sparc_frame_cache(frame_info_ptr this_frame, void **this_cache)
void sparc32_supply_gregset(const struct sparc_gregmap *gregmap, struct regcache *regcache, int regnum, const void *gregs)
void sparc32_supply_fpregset(const struct sparc_fpregmap *fpregmap, struct regcache *regcache, int regnum, const void *fpregs)
void sparc32_collect_fpregset(const struct sparc_fpregmap *fpregmap, const struct regcache *regcache, int regnum, void *fpregs)
void sparc32_collect_gregset(const struct sparc_gregmap *gregmap, const struct regcache *regcache, int regnum, void *gregs)
@ SPARC32_NPC_REGNUM
Definition sparc-tdep.h:156
@ SPARC32_PSR_REGNUM
Definition sparc-tdep.h:152
@ SPARC32_PC_REGNUM
Definition sparc-tdep.h:155
@ SPARC32_Y_REGNUM
Definition sparc-tdep.h:150
@ SPARC_O2_REGNUM
Definition sparc-tdep.h:114
@ SPARC_G1_REGNUM
Definition sparc-tdep.h:105
@ SPARC_L0_REGNUM
Definition sparc-tdep.h:120
@ SPARC_I7_REGNUM
Definition sparc-tdep.h:135
@ SPARC_I2_REGNUM
Definition sparc-tdep.h:130
@ SPARC_O7_REGNUM
Definition sparc-tdep.h:119
@ SPARC_SP_REGNUM
Definition sparc-tdep.h:118
struct trad_frame_saved_reg * saved_regs
Definition sparc-tdep.h:192
unsigned char copied_regs_mask
Definition sparc-tdep.h:186
const struct regset * fpregset
Definition sparc-tdep.h:77
const struct regset * gregset
Definition sparc-tdep.h:75
void set_addr(LONGEST addr)
Definition trad-frame.h:102
Definition value.h:130
trad_frame_saved_reg * trad_frame_alloc_saved_regs(struct gdbarch *gdbarch)
Definition trad-frame.c:62
struct value * trad_frame_get_prev_register(frame_info_ptr this_frame, trad_frame_saved_reg this_saved_regs[], int regnum)
Definition trad-frame.c:187