1 /* Target-dependent code for Solaris UltraSPARC.
3 Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "frame-unwind.h"
28 #include "trad-frame.h"
30 #include "gdb_assert.h"
32 #include "sol2-tdep.h"
33 #include "sparc64-tdep.h"
34 #include "solib-svr4.h"
36 /* From <sys/regset.h>. */
37 const struct sparc_gregset sparc64_sol2_gregset =
39 32 * 8, /* "tstate" */
51 static struct sparc_frame_cache *
52 sparc64_sol2_sigtramp_frame_cache (struct frame_info *this_frame,
55 struct sparc_frame_cache *cache;
56 CORE_ADDR mcontext_addr, addr;
62 cache = sparc_frame_cache (this_frame, this_cache);
63 gdb_assert (cache == *this_cache);
65 cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
67 /* The third argument is a pointer to an instance of `ucontext_t',
68 which has a member `uc_mcontext' that contains the saved
71 (cache->copied_regs_mask & 0x04) ? SPARC_I2_REGNUM : SPARC_O2_REGNUM;
72 mcontext_addr = get_frame_register_unsigned (this_frame, regnum) + 64;
74 cache->saved_regs[SPARC64_CCR_REGNUM].addr = mcontext_addr + 0 * 8;
75 cache->saved_regs[SPARC64_PC_REGNUM].addr = mcontext_addr + 1 * 8;
76 cache->saved_regs[SPARC64_NPC_REGNUM].addr = mcontext_addr + 2 * 8;
77 cache->saved_regs[SPARC64_Y_REGNUM].addr = mcontext_addr + 3 * 8;
78 cache->saved_regs[SPARC64_ASI_REGNUM].addr = mcontext_addr + 19 * 8;
79 cache->saved_regs[SPARC64_FPRS_REGNUM].addr = mcontext_addr + 20 * 8;
81 /* Since %g0 is always zero, keep the identity encoding. */
82 for (regnum = SPARC_G1_REGNUM, addr = mcontext_addr + 4 * 8;
83 regnum <= SPARC_O7_REGNUM; regnum++, addr += 8)
84 cache->saved_regs[regnum].addr = addr;
86 if (get_frame_memory_unsigned (this_frame, mcontext_addr + 21 * 8, 8))
88 /* The register windows haven't been flushed. */
89 for (regnum = SPARC_L0_REGNUM; regnum <= SPARC_I7_REGNUM; regnum++)
90 trad_frame_set_unknown (cache->saved_regs, regnum);
96 addr = cache->saved_regs[SPARC_SP_REGNUM].addr;
97 sp = get_frame_memory_unsigned (this_frame, addr, 8);
98 for (regnum = SPARC_L0_REGNUM, addr = sp + BIAS;
99 regnum <= SPARC_I7_REGNUM; regnum++, addr += 8)
100 cache->saved_regs[regnum].addr = addr;
107 sparc64_sol2_sigtramp_frame_this_id (struct frame_info *this_frame,
109 struct frame_id *this_id)
111 struct sparc_frame_cache *cache =
112 sparc64_sol2_sigtramp_frame_cache (this_frame, this_cache);
114 (*this_id) = frame_id_build (cache->base, cache->pc);
117 static struct value *
118 sparc64_sol2_sigtramp_frame_prev_register (struct frame_info *this_frame,
122 struct sparc_frame_cache *cache =
123 sparc64_sol2_sigtramp_frame_cache (this_frame, this_cache);
125 return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum);
129 sparc64_sol2_sigtramp_frame_sniffer (const struct frame_unwind *self,
130 struct frame_info *this_frame,
133 CORE_ADDR pc = get_frame_pc (this_frame);
136 find_pc_partial_function (pc, &name, NULL, NULL);
137 if (sparc_sol2_pc_in_sigtramp (pc, name))
142 static const struct frame_unwind sparc64_sol2_sigtramp_frame_unwind =
145 default_frame_unwind_stop_reason,
146 sparc64_sol2_sigtramp_frame_this_id,
147 sparc64_sol2_sigtramp_frame_prev_register,
149 sparc64_sol2_sigtramp_frame_sniffer
155 sparc64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
157 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
159 frame_unwind_append_unwinder (gdbarch, &sparc64_sol2_sigtramp_frame_unwind);
161 sparc64_init_abi (info, gdbarch);
163 /* The Sun compilers (Sun ONE Studio, Forte Developer, Sun WorkShop, SunPRO)
164 compiler puts out 0 instead of the address in N_SO stabs. Starting with
165 SunPRO 3.0, the compiler does this for N_FUN stabs too. */
166 set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);
168 /* The Sun compilers also do "globalization"; see the comment in
169 sparc_sol2_static_transform_name for more information. */
170 set_gdbarch_static_transform_name
171 (gdbarch, sparc_sol2_static_transform_name);
173 /* Solaris has SVR4-style shared libraries... */
174 set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
175 set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
176 set_solib_svr4_fetch_link_map_offsets
177 (gdbarch, svr4_lp64_fetch_link_map_offsets);
179 /* ...which means that we need some special handling when doing
180 prologue analysis. */
181 tdep->plt_entry_size = 16;
183 /* Solaris has kernel-assisted single-stepping support. */
184 set_gdbarch_software_single_step (gdbarch, NULL);
186 /* How to print LWP PTIDs from core files. */
187 set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
191 /* Provide a prototype to silence -Wmissing-prototypes. */
192 void _initialize_sparc64_sol2_tdep (void);
195 _initialize_sparc64_sol2_tdep (void)
197 gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
198 GDB_OSABI_SOLARIS, sparc64_sol2_init_abi);