1 /* Target-dependent code for Solaris UltraSPARC.
3 Copyright (C) 2003-2018 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
22 #include "frame-unwind.h"
27 #include "trad-frame.h"
30 #include "sol2-tdep.h"
31 #include "sparc64-tdep.h"
32 #include "solib-svr4.h"
34 /* From <sys/regset.h>. */
35 const struct sparc_gregmap sparc64_sol2_gregmap =
37 32 * 8, /* "tstate" */
48 const struct sparc_fpregmap sparc64_sol2_fpregmap =
55 sparc64_sol2_supply_core_gregset (const struct regset *regset,
56 struct regcache *regcache,
57 int regnum, const void *gregs, size_t len)
59 sparc64_supply_gregset (&sparc64_sol2_gregmap, regcache, regnum, gregs);
63 sparc64_sol2_collect_core_gregset (const struct regset *regset,
64 const struct regcache *regcache,
65 int regnum, void *gregs, size_t len)
67 sparc64_collect_gregset (&sparc64_sol2_gregmap, regcache, regnum, gregs);
71 sparc64_sol2_supply_core_fpregset (const struct regset *regset,
72 struct regcache *regcache,
73 int regnum, const void *fpregs, size_t len)
75 sparc64_supply_fpregset (&sparc64_sol2_fpregmap, regcache, regnum, fpregs);
79 sparc64_sol2_collect_core_fpregset (const struct regset *regset,
80 const struct regcache *regcache,
81 int regnum, void *fpregs, size_t len)
83 sparc64_collect_fpregset (&sparc64_sol2_fpregmap, regcache, regnum, fpregs);
86 static const struct regset sparc64_sol2_gregset =
89 sparc64_sol2_supply_core_gregset,
90 sparc64_sol2_collect_core_gregset
93 static const struct regset sparc64_sol2_fpregset =
96 sparc64_sol2_supply_core_fpregset,
97 sparc64_sol2_collect_core_fpregset
101 static struct sparc_frame_cache *
102 sparc64_sol2_sigtramp_frame_cache (struct frame_info *this_frame,
105 struct sparc_frame_cache *cache;
106 CORE_ADDR mcontext_addr, addr;
110 return (struct sparc_frame_cache *) *this_cache;
112 cache = sparc_frame_cache (this_frame, this_cache);
113 gdb_assert (cache == *this_cache);
115 cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
117 /* The third argument is a pointer to an instance of `ucontext_t',
118 which has a member `uc_mcontext' that contains the saved
121 (cache->copied_regs_mask & 0x04) ? SPARC_I2_REGNUM : SPARC_O2_REGNUM;
122 mcontext_addr = get_frame_register_unsigned (this_frame, regnum) + 64;
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;
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;
136 if (get_frame_memory_unsigned (this_frame, mcontext_addr + 21 * 8, 8))
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);
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;
157 sparc64_sol2_sigtramp_frame_this_id (struct frame_info *this_frame,
159 struct frame_id *this_id)
161 struct sparc_frame_cache *cache =
162 sparc64_sol2_sigtramp_frame_cache (this_frame, this_cache);
164 (*this_id) = frame_id_build (cache->base, cache->pc);
167 static struct value *
168 sparc64_sol2_sigtramp_frame_prev_register (struct frame_info *this_frame,
172 struct sparc_frame_cache *cache =
173 sparc64_sol2_sigtramp_frame_cache (this_frame, this_cache);
175 return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum);
179 sparc64_sol2_sigtramp_frame_sniffer (const struct frame_unwind *self,
180 struct frame_info *this_frame,
183 CORE_ADDR pc = get_frame_pc (this_frame);
186 find_pc_partial_function (pc, &name, NULL, NULL);
187 if (sparc_sol2_pc_in_sigtramp (pc, name))
192 static const struct frame_unwind sparc64_sol2_sigtramp_frame_unwind =
195 default_frame_unwind_stop_reason,
196 sparc64_sol2_sigtramp_frame_this_id,
197 sparc64_sol2_sigtramp_frame_prev_register,
199 sparc64_sol2_sigtramp_frame_sniffer
205 sparc64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
207 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
209 tdep->gregset = &sparc64_sol2_gregset;
210 tdep->sizeof_gregset = 304;
212 tdep->fpregset = &sparc64_sol2_fpregset;
213 tdep->sizeof_fpregset = 544;
215 frame_unwind_append_unwinder (gdbarch, &sparc64_sol2_sigtramp_frame_unwind);
217 sparc64_init_abi (info, gdbarch);
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. */
222 set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);
224 /* The Sun compilers also do "globalization"; see the comment in
225 sparc_sol2_static_transform_name for more information. */
226 set_gdbarch_static_transform_name
227 (gdbarch, sparc_sol2_static_transform_name);
229 /* Solaris has SVR4-style shared libraries... */
230 set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
231 set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
232 set_solib_svr4_fetch_link_map_offsets
233 (gdbarch, svr4_lp64_fetch_link_map_offsets);
235 /* ...which means that we need some special handling when doing
236 prologue analysis. */
237 tdep->plt_entry_size = 16;
239 /* Solaris has kernel-assisted single-stepping support. */
240 set_gdbarch_software_single_step (gdbarch, NULL);
242 /* How to print LWP PTIDs from core files. */
243 set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
247 _initialize_sparc64_sol2_tdep (void)
249 gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
250 GDB_OSABI_SOLARIS, sparc64_sol2_init_abi);