GDB (xrefs)
/tmp/gdb-7.10/gdb/sparc64-sol2-tdep.c
Go to the documentation of this file.
1 /* Target-dependent code for Solaris UltraSPARC.
2 
3  Copyright (C) 2003-2015 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 "gdbarch.h"
24 #include "symtab.h"
25 #include "objfiles.h"
26 #include "osabi.h"
27 #include "trad-frame.h"
28 #include "regset.h"
29 
30 #include "sol2-tdep.h"
31 #include "sparc64-tdep.h"
32 #include "solib-svr4.h"
33 
34 /* From <sys/regset.h>. */
35 const struct sparc_gregmap sparc64_sol2_gregmap =
36 {
37  32 * 8, /* "tstate" */
38  33 * 8, /* %pc */
39  34 * 8, /* %npc */
40  35 * 8, /* %y */
41  -1, /* %wim */
42  -1, /* %tbr */
43  1 * 8, /* %g1 */
44  16 * 8, /* %l0 */
45  8 /* sizeof (%y) */
46 };
47 
48 const struct sparc_fpregmap sparc64_sol2_fpregmap =
49 {
50  0 * 8, /* %f0 */
51  33 * 8, /* %fsr */
52 };
53 
54 static void
56  struct regcache *regcache,
57  int regnum, const void *gregs, size_t len)
58 {
59  sparc64_supply_gregset (&sparc64_sol2_gregmap, regcache, regnum, gregs);
60 }
61 
62 static void
64  const struct regcache *regcache,
65  int regnum, void *gregs, size_t len)
66 {
67  sparc64_collect_gregset (&sparc64_sol2_gregmap, regcache, regnum, gregs);
68 }
69 
70 static void
72  struct regcache *regcache,
73  int regnum, const void *fpregs, size_t len)
74 {
75  sparc64_supply_fpregset (&sparc64_sol2_fpregmap, regcache, regnum, fpregs);
76 }
77 
78 static void
80  const struct regcache *regcache,
81  int regnum, void *fpregs, size_t len)
82 {
83  sparc64_collect_fpregset (&sparc64_sol2_fpregmap, regcache, regnum, fpregs);
84 }
85 
86 static const struct regset sparc64_sol2_gregset =
87  {
88  NULL,
91  };
92 
93 static const struct regset sparc64_sol2_fpregset =
94  {
95  NULL,
98  };
99 
100 
101 static struct sparc_frame_cache *
103  void **this_cache)
104 {
105  struct sparc_frame_cache *cache;
106  CORE_ADDR mcontext_addr, addr;
107  int regnum;
108 
109  if (*this_cache)
110  return *this_cache;
111 
112  cache = sparc_frame_cache (this_frame, this_cache);
113  gdb_assert (cache == *this_cache);
114 
115  cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
116 
117  /* The third argument is a pointer to an instance of `ucontext_t',
118  which has a member `uc_mcontext' that contains the saved
119  registers. */
120  regnum =
122  mcontext_addr = get_frame_register_unsigned (this_frame, regnum) + 64;
123 
124  cache->saved_regs[SPARC64_CCR_REGNUM].addr = mcontext_addr + 0 * 8;
125  cache->saved_regs[SPARC64_PC_REGNUM].addr = mcontext_addr + 1 * 8;
126  cache->saved_regs[SPARC64_NPC_REGNUM].addr = mcontext_addr + 2 * 8;
127  cache->saved_regs[SPARC64_Y_REGNUM].addr = mcontext_addr + 3 * 8;
128  cache->saved_regs[SPARC64_ASI_REGNUM].addr = mcontext_addr + 19 * 8;
129  cache->saved_regs[SPARC64_FPRS_REGNUM].addr = mcontext_addr + 20 * 8;
130 
131  /* Since %g0 is always zero, keep the identity encoding. */
132  for (regnum = SPARC_G1_REGNUM, addr = mcontext_addr + 4 * 8;
133  regnum <= SPARC_O7_REGNUM; regnum++, addr += 8)
134  cache->saved_regs[regnum].addr = addr;
135 
136  if (get_frame_memory_unsigned (this_frame, mcontext_addr + 21 * 8, 8))
137  {
138  /* The register windows haven't been flushed. */
139  for (regnum = SPARC_L0_REGNUM; regnum <= SPARC_I7_REGNUM; regnum++)
140  trad_frame_set_unknown (cache->saved_regs, regnum);
141  }
142  else
143  {
144  CORE_ADDR sp;
145 
146  addr = cache->saved_regs[SPARC_SP_REGNUM].addr;
147  sp = get_frame_memory_unsigned (this_frame, addr, 8);
148  for (regnum = SPARC_L0_REGNUM, addr = sp + BIAS;
149  regnum <= SPARC_I7_REGNUM; regnum++, addr += 8)
150  cache->saved_regs[regnum].addr = addr;
151  }
152 
153  return cache;
154 }
155 
156 static void
158  void **this_cache,
159  struct frame_id *this_id)
160 {
161  struct sparc_frame_cache *cache =
162  sparc64_sol2_sigtramp_frame_cache (this_frame, this_cache);
163 
164  (*this_id) = frame_id_build (cache->base, cache->pc);
165 }
166 
167 static struct value *
169  void **this_cache,
170  int regnum)
171 {
172  struct sparc_frame_cache *cache =
173  sparc64_sol2_sigtramp_frame_cache (this_frame, this_cache);
174 
175  return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum);
176 }
177 
178 static int
180  struct frame_info *this_frame,
181  void **this_cache)
182 {
183  CORE_ADDR pc = get_frame_pc (this_frame);
184  const char *name;
185 
186  find_pc_partial_function (pc, &name, NULL, NULL);
187  if (sparc_sol2_pc_in_sigtramp (pc, name))
188  return 1;
189 
190  return 0;
191 }
192 static const struct frame_unwind sparc64_sol2_sigtramp_frame_unwind =
193 {
198  NULL,
200 };
201 
202 
203 
204 void
206 {
207  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
208 
209  tdep->gregset = &sparc64_sol2_gregset;
210  tdep->sizeof_gregset = 304;
211 
213  tdep->sizeof_fpregset = 544;
214 
215  frame_unwind_append_unwinder (gdbarch, &sparc64_sol2_sigtramp_frame_unwind);
216 
217  sparc64_init_abi (info, gdbarch);
218 
219  /* The Sun compilers (Sun ONE Studio, Forte Developer, Sun WorkShop, SunPRO)
220  compiler puts out 0 instead of the address in N_SO stabs. Starting with
221  SunPRO 3.0, the compiler does this for N_FUN stabs too. */
223 
224  /* The Sun compilers also do "globalization"; see the comment in
225  sparc_sol2_static_transform_name for more information. */
228 
229  /* Solaris has SVR4-style shared libraries... */
234 
235  /* ...which means that we need some special handling when doing
236  prologue analysis. */
237  tdep->plt_entry_size = 16;
238 
239  /* Solaris has kernel-assisted single-stepping support. */
240  set_gdbarch_software_single_step (gdbarch, NULL);
241 
242  /* How to print LWP PTIDs from core files. */
244 }
245 
246 
247 /* Provide a prototype to silence -Wmissing-prototypes. */
249 
250 void
252 {
253  gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
255 }
void sparc64_collect_fpregset(const struct sparc_fpregmap *fpregmap, const struct regcache *regcache, int regnum, void *fpregs)
void sparc64_init_abi(struct gdbarch_info info, struct gdbarch *gdbarch)
static const struct regset sparc64_sol2_fpregset
CORE_ADDR sol2_skip_solib_resolver(struct gdbarch *gdbarch, CORE_ADDR pc)
Definition: sol2-tdep.c:29
struct frame_id frame_id_build(CORE_ADDR stack_addr, CORE_ADDR code_addr)
Definition: frame.c:554
void set_gdbarch_core_pid_to_str(struct gdbarch *gdbarch, gdbarch_core_pid_to_str_ftype core_pid_to_str)
Definition: gdbarch.c:3542
CORE_ADDR get_frame_pc(struct frame_info *frame)
Definition: frame.c:2217
bfd_vma CORE_ADDR
Definition: common-types.h:41
struct link_map_offsets * svr4_lp64_fetch_link_map_offsets(void)
Definition: solib-svr4.c:3180
struct value * trad_frame_get_prev_register(struct frame_info *this_frame, struct trad_frame_saved_reg this_saved_regs[], int regnum)
Definition: trad-frame.c:135
const char * sparc_sol2_static_transform_name(const char *name)
if(!(yy_init))
Definition: ada-lex.c:1072
void set_gdbarch_skip_trampoline_code(struct gdbarch *gdbarch, gdbarch_skip_trampoline_code_ftype skip_trampoline_code)
Definition: gdbarch.c:3084
const struct regset * gregset
Definition: sparc-tdep.h:61
struct sparc_frame_cache * sparc_frame_cache(struct frame_info *this_frame, void **this_cache)
Definition: sparc-tdep.c:1098
#define BIAS
Definition: sparc-tdep.c:70
static void sparc64_sol2_sigtramp_frame_this_id(struct frame_info *this_frame, void **this_cache, struct frame_id *this_id)
void _initialize_sparc64_sol2_tdep(void)
static const struct regset sparc64_sol2_gregset
size_t sizeof_fpregset
Definition: i386-tdep.h:64
ULONGEST get_frame_memory_unsigned(struct frame_info *this_frame, CORE_ADDR addr, int len)
Definition: frame.c:2515
void sparc64_collect_gregset(const struct sparc_gregmap *gregmap, const struct regcache *regcache, int regnum, void *gregs)
void sparc64_supply_gregset(const struct sparc_gregmap *gregmap, struct regcache *regcache, int regnum, const void *gregs)
struct gdbarch_tdep * gdbarch_tdep(struct gdbarch *gdbarch)
Definition: gdbarch.c:1402
void frame_unwind_append_unwinder(struct gdbarch *gdbarch, const struct frame_unwind *unwinder)
Definition: frame-unwind.c:78
struct trad_frame_saved_reg * saved_regs
Definition: sparc-tdep.h:173
Definition: regset.h:34
const char *const name
Definition: aarch64-tdep.c:68
static void sparc64_sol2_supply_core_gregset(const struct regset *regset, struct regcache *regcache, int regnum, const void *gregs, size_t len)
CORE_ADDR find_solib_trampoline_target(struct frame_info *frame, CORE_ADDR pc)
Definition: minsyms.c:1394
CORE_ADDR base
Definition: sparc-tdep.h:154
void sparc64_supply_fpregset(const struct sparc_fpregmap *fpregmap, struct regcache *regcache, int regnum, const void *fpregs)
static void sparc64_sol2_collect_core_fpregset(const struct regset *regset, const struct regcache *regcache, int regnum, void *fpregs, size_t len)
void set_solib_svr4_fetch_link_map_offsets(struct gdbarch *gdbarch, struct link_map_offsets *(*flmo)(void))
Definition: solib-svr4.c:3108
int find_pc_partial_function(CORE_ADDR pc, const char **name, CORE_ADDR *address, CORE_ADDR *endaddr)
Definition: blockframe.c:321
#define gdb_assert(expr)
Definition: gdb_assert.h:33
int regnum
Definition: aarch64-tdep.c:69
static struct value * sparc64_sol2_sigtramp_frame_prev_register(struct frame_info *this_frame, void **this_cache, int regnum)
ULONGEST get_frame_register_unsigned(struct frame_info *frame, int regnum)
Definition: frame.c:1194
void set_gdbarch_sofun_address_maybe_missing(struct gdbarch *gdbarch, int sofun_address_maybe_missing)
Definition: gdbarch.c:3857
Definition: value.c:172
void set_gdbarch_software_single_step(struct gdbarch *gdbarch, gdbarch_software_single_step_ftype software_single_step)
Definition: gdbarch.c:3026
struct trad_frame_saved_reg * trad_frame_alloc_saved_regs(struct frame_info *this_frame)
Definition: trad-frame.c:52
char * sol2_core_pid_to_str(struct gdbarch *gdbarch, ptid_t ptid)
Definition: sol2-tdep.c:44
unsigned char copied_regs_mask
Definition: sparc-tdep.h:167
size_t sizeof_gregset
Definition: i386-tdep.h:61
void set_gdbarch_static_transform_name(struct gdbarch *gdbarch, gdbarch_static_transform_name_ftype static_transform_name)
Definition: gdbarch.c:3840
const struct regset * fpregset
Definition: i386-tdep.h:242
static void sparc64_sol2_supply_core_fpregset(const struct regset *regset, struct regcache *regcache, int regnum, const void *fpregs, size_t len)
enum unwind_stop_reason default_frame_unwind_stop_reason(struct frame_info *this_frame, void **this_cache)
Definition: frame-unwind.c:180
int sparc_sol2_pc_in_sigtramp(CORE_ADDR pc, const char *name)
void trad_frame_set_unknown(struct trad_frame_saved_reg this_saved_regs[], int regnum)
Definition: trad-frame.c:126
static void sparc64_sol2_collect_core_gregset(const struct regset *regset, const struct regcache *regcache, int regnum, void *gregs, size_t len)
void sparc64_sol2_init_abi(struct gdbarch_info info, struct gdbarch *gdbarch)
size_t plt_entry_size
Definition: sparc-tdep.h:71
void set_gdbarch_skip_solib_resolver(struct gdbarch *gdbarch, gdbarch_skip_solib_resolver_ftype skip_solib_resolver)
Definition: gdbarch.c:3101
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:148
static struct sparc_frame_cache * sparc64_sol2_sigtramp_frame_cache(struct frame_info *this_frame, void **this_cache)
static int sparc64_sol2_sigtramp_frame_sniffer(const struct frame_unwind *self, struct frame_info *this_frame, void **this_cache)
const ULONGEST const LONGEST len
Definition: target.h:309