1 /* Target-dependent code for Solaris UltraSPARC.
3 Copyright (C) 2003-2013 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"
29 #include "gdb_assert.h"
31 #include "sol2-tdep.h"
32 #include "sparc64-tdep.h"
33 #include "solib-svr4.h"
35 /* From <sys/regset.h>. */
36 const struct sparc_gregset sparc64_sol2_gregset =
38 32 * 8, /* "tstate" */
49 const struct sparc_fpregset sparc64_sol2_fpregset =
56 static struct sparc_frame_cache *
57 sparc64_sol2_sigtramp_frame_cache (struct frame_info *this_frame,
60 struct sparc_frame_cache *cache;
61 CORE_ADDR mcontext_addr, addr;
67 cache = sparc_frame_cache (this_frame, this_cache);
68 gdb_assert (cache == *this_cache);
70 cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
72 /* The third argument is a pointer to an instance of `ucontext_t',
73 which has a member `uc_mcontext' that contains the saved
76 (cache->copied_regs_mask & 0x04) ? SPARC_I2_REGNUM : SPARC_O2_REGNUM;
77 mcontext_addr = get_frame_register_unsigned (this_frame, regnum) + 64;
79 cache->saved_regs[SPARC64_CCR_REGNUM].addr = mcontext_addr + 0 * 8;
80 cache->saved_regs[SPARC64_PC_REGNUM].addr = mcontext_addr + 1 * 8;
81 cache->saved_regs[SPARC64_NPC_REGNUM].addr = mcontext_addr + 2 * 8;
82 cache->saved_regs[SPARC64_Y_REGNUM].addr = mcontext_addr + 3 * 8;
83 cache->saved_regs[SPARC64_ASI_REGNUM].addr = mcontext_addr + 19 * 8;
84 cache->saved_regs[SPARC64_FPRS_REGNUM].addr = mcontext_addr + 20 * 8;
86 /* Since %g0 is always zero, keep the identity encoding. */
87 for (regnum = SPARC_G1_REGNUM, addr = mcontext_addr + 4 * 8;
88 regnum <= SPARC_O7_REGNUM; regnum++, addr += 8)
89 cache->saved_regs[regnum].addr = addr;
91 if (get_frame_memory_unsigned (this_frame, mcontext_addr + 21 * 8, 8))
93 /* The register windows haven't been flushed. */
94 for (regnum = SPARC_L0_REGNUM; regnum <= SPARC_I7_REGNUM; regnum++)
95 trad_frame_set_unknown (cache->saved_regs, regnum);
101 addr = cache->saved_regs[SPARC_SP_REGNUM].addr;
102 sp = get_frame_memory_unsigned (this_frame, addr, 8);
103 for (regnum = SPARC_L0_REGNUM, addr = sp + BIAS;
104 regnum <= SPARC_I7_REGNUM; regnum++, addr += 8)
105 cache->saved_regs[regnum].addr = addr;
112 sparc64_sol2_sigtramp_frame_this_id (struct frame_info *this_frame,
114 struct frame_id *this_id)
116 struct sparc_frame_cache *cache =
117 sparc64_sol2_sigtramp_frame_cache (this_frame, this_cache);
119 (*this_id) = frame_id_build (cache->base, cache->pc);
122 static struct value *
123 sparc64_sol2_sigtramp_frame_prev_register (struct frame_info *this_frame,
127 struct sparc_frame_cache *cache =
128 sparc64_sol2_sigtramp_frame_cache (this_frame, this_cache);
130 return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum);
134 sparc64_sol2_sigtramp_frame_sniffer (const struct frame_unwind *self,
135 struct frame_info *this_frame,
138 CORE_ADDR pc = get_frame_pc (this_frame);
141 find_pc_partial_function (pc, &name, NULL, NULL);
142 if (sparc_sol2_pc_in_sigtramp (pc, name))
147 static const struct frame_unwind sparc64_sol2_sigtramp_frame_unwind =
150 default_frame_unwind_stop_reason,
151 sparc64_sol2_sigtramp_frame_this_id,
152 sparc64_sol2_sigtramp_frame_prev_register,
154 sparc64_sol2_sigtramp_frame_sniffer
160 sparc64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
162 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
164 frame_unwind_append_unwinder (gdbarch, &sparc64_sol2_sigtramp_frame_unwind);
166 sparc64_init_abi (info, gdbarch);
168 /* The Sun compilers (Sun ONE Studio, Forte Developer, Sun WorkShop, SunPRO)
169 compiler puts out 0 instead of the address in N_SO stabs. Starting with
170 SunPRO 3.0, the compiler does this for N_FUN stabs too. */
171 set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);
173 /* The Sun compilers also do "globalization"; see the comment in
174 sparc_sol2_static_transform_name for more information. */
175 set_gdbarch_static_transform_name
176 (gdbarch, sparc_sol2_static_transform_name);
178 /* Solaris has SVR4-style shared libraries... */
179 set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
180 set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
181 set_solib_svr4_fetch_link_map_offsets
182 (gdbarch, svr4_lp64_fetch_link_map_offsets);
184 /* ...which means that we need some special handling when doing
185 prologue analysis. */
186 tdep->plt_entry_size = 16;
188 /* Solaris has kernel-assisted single-stepping support. */
189 set_gdbarch_software_single_step (gdbarch, NULL);
191 /* How to print LWP PTIDs from core files. */
192 set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
196 /* Provide a prototype to silence -Wmissing-prototypes. */
197 void _initialize_sparc64_sol2_tdep (void);
200 _initialize_sparc64_sol2_tdep (void)
202 gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
203 GDB_OSABI_SOLARIS, sparc64_sol2_init_abi);