1 /* Target-dependent code for Solaris UltraSPARC.
3 Copyright (C) 2003-2014 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 "sol2-tdep.h"
30 #include "sparc64-tdep.h"
31 #include "solib-svr4.h"
33 /* From <sys/regset.h>. */
34 const struct sparc_gregmap sparc64_sol2_gregmap =
36 32 * 8, /* "tstate" */
47 const struct sparc_fpregmap sparc64_sol2_fpregmap =
54 static struct sparc_frame_cache *
55 sparc64_sol2_sigtramp_frame_cache (struct frame_info *this_frame,
58 struct sparc_frame_cache *cache;
59 CORE_ADDR mcontext_addr, addr;
65 cache = sparc_frame_cache (this_frame, this_cache);
66 gdb_assert (cache == *this_cache);
68 cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
70 /* The third argument is a pointer to an instance of `ucontext_t',
71 which has a member `uc_mcontext' that contains the saved
74 (cache->copied_regs_mask & 0x04) ? SPARC_I2_REGNUM : SPARC_O2_REGNUM;
75 mcontext_addr = get_frame_register_unsigned (this_frame, regnum) + 64;
77 cache->saved_regs[SPARC64_CCR_REGNUM].addr = mcontext_addr + 0 * 8;
78 cache->saved_regs[SPARC64_PC_REGNUM].addr = mcontext_addr + 1 * 8;
79 cache->saved_regs[SPARC64_NPC_REGNUM].addr = mcontext_addr + 2 * 8;
80 cache->saved_regs[SPARC64_Y_REGNUM].addr = mcontext_addr + 3 * 8;
81 cache->saved_regs[SPARC64_ASI_REGNUM].addr = mcontext_addr + 19 * 8;
82 cache->saved_regs[SPARC64_FPRS_REGNUM].addr = mcontext_addr + 20 * 8;
84 /* Since %g0 is always zero, keep the identity encoding. */
85 for (regnum = SPARC_G1_REGNUM, addr = mcontext_addr + 4 * 8;
86 regnum <= SPARC_O7_REGNUM; regnum++, addr += 8)
87 cache->saved_regs[regnum].addr = addr;
89 if (get_frame_memory_unsigned (this_frame, mcontext_addr + 21 * 8, 8))
91 /* The register windows haven't been flushed. */
92 for (regnum = SPARC_L0_REGNUM; regnum <= SPARC_I7_REGNUM; regnum++)
93 trad_frame_set_unknown (cache->saved_regs, regnum);
99 addr = cache->saved_regs[SPARC_SP_REGNUM].addr;
100 sp = get_frame_memory_unsigned (this_frame, addr, 8);
101 for (regnum = SPARC_L0_REGNUM, addr = sp + BIAS;
102 regnum <= SPARC_I7_REGNUM; regnum++, addr += 8)
103 cache->saved_regs[regnum].addr = addr;
110 sparc64_sol2_sigtramp_frame_this_id (struct frame_info *this_frame,
112 struct frame_id *this_id)
114 struct sparc_frame_cache *cache =
115 sparc64_sol2_sigtramp_frame_cache (this_frame, this_cache);
117 (*this_id) = frame_id_build (cache->base, cache->pc);
120 static struct value *
121 sparc64_sol2_sigtramp_frame_prev_register (struct frame_info *this_frame,
125 struct sparc_frame_cache *cache =
126 sparc64_sol2_sigtramp_frame_cache (this_frame, this_cache);
128 return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum);
132 sparc64_sol2_sigtramp_frame_sniffer (const struct frame_unwind *self,
133 struct frame_info *this_frame,
136 CORE_ADDR pc = get_frame_pc (this_frame);
139 find_pc_partial_function (pc, &name, NULL, NULL);
140 if (sparc_sol2_pc_in_sigtramp (pc, name))
145 static const struct frame_unwind sparc64_sol2_sigtramp_frame_unwind =
148 default_frame_unwind_stop_reason,
149 sparc64_sol2_sigtramp_frame_this_id,
150 sparc64_sol2_sigtramp_frame_prev_register,
152 sparc64_sol2_sigtramp_frame_sniffer
158 sparc64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
160 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
162 frame_unwind_append_unwinder (gdbarch, &sparc64_sol2_sigtramp_frame_unwind);
164 sparc64_init_abi (info, gdbarch);
166 /* The Sun compilers (Sun ONE Studio, Forte Developer, Sun WorkShop, SunPRO)
167 compiler puts out 0 instead of the address in N_SO stabs. Starting with
168 SunPRO 3.0, the compiler does this for N_FUN stabs too. */
169 set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);
171 /* The Sun compilers also do "globalization"; see the comment in
172 sparc_sol2_static_transform_name for more information. */
173 set_gdbarch_static_transform_name
174 (gdbarch, sparc_sol2_static_transform_name);
176 /* Solaris has SVR4-style shared libraries... */
177 set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
178 set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
179 set_solib_svr4_fetch_link_map_offsets
180 (gdbarch, svr4_lp64_fetch_link_map_offsets);
182 /* ...which means that we need some special handling when doing
183 prologue analysis. */
184 tdep->plt_entry_size = 16;
186 /* Solaris has kernel-assisted single-stepping support. */
187 set_gdbarch_software_single_step (gdbarch, NULL);
189 /* How to print LWP PTIDs from core files. */
190 set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
194 /* Provide a prototype to silence -Wmissing-prototypes. */
195 void _initialize_sparc64_sol2_tdep (void);
198 _initialize_sparc64_sol2_tdep (void)
200 gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
201 GDB_OSABI_SOLARIS, sparc64_sol2_init_abi);