1 /* Target-dependent code for Solaris UltraSPARC.
3 Copyright 2003, 2004 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 2 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, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
24 #include "frame-unwind.h"
29 #include "trad-frame.h"
31 #include "gdb_assert.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 *next_frame,
55 struct sparc_frame_cache *cache;
56 CORE_ADDR mcontext_addr, addr;
62 cache = sparc_frame_cache (next_frame, this_cache);
63 gdb_assert (cache == *this_cache);
65 cache->saved_regs = trad_frame_alloc_saved_regs (next_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
70 regnum = (cache->frameless_p ? SPARC_O2_REGNUM : SPARC_I2_REGNUM);
71 mcontext_addr = frame_unwind_register_unsigned (next_frame, regnum) + 64;
73 cache->saved_regs[SPARC64_CCR_REGNUM].addr = mcontext_addr + 0 * 8;
74 cache->saved_regs[SPARC64_PC_REGNUM].addr = mcontext_addr + 1 * 8;
75 cache->saved_regs[SPARC64_NPC_REGNUM].addr = mcontext_addr + 2 * 8;
76 cache->saved_regs[SPARC64_Y_REGNUM].addr = mcontext_addr + 3 * 8;
77 cache->saved_regs[SPARC64_ASI_REGNUM].addr = mcontext_addr + 19 * 8;
78 cache->saved_regs[SPARC64_FPRS_REGNUM].addr = mcontext_addr + 20 * 8;
80 /* Since %g0 is always zero, keep the identity encoding. */
81 for (regnum = SPARC_G1_REGNUM, addr = mcontext_addr + 4 * 8;
82 regnum <= SPARC_O7_REGNUM; regnum++, addr += 8)
83 cache->saved_regs[regnum].addr = addr;
85 if (get_frame_memory_unsigned (next_frame, mcontext_addr + 21 * 8, 8))
87 /* The register windows haven't been flushed. */
88 for (regnum = SPARC_L0_REGNUM; regnum <= SPARC_I7_REGNUM; regnum++)
89 trad_frame_set_unknown (cache->saved_regs, regnum);
95 addr = cache->saved_regs[SPARC_SP_REGNUM].addr;
96 sp = get_frame_memory_unsigned (next_frame, addr, 8);
97 for (regnum = SPARC_L0_REGNUM, addr = sp + BIAS;
98 regnum <= SPARC_I7_REGNUM; regnum++, addr += 8)
99 cache->saved_regs[regnum].addr = addr;
106 sparc64_sol2_sigtramp_frame_this_id (struct frame_info *next_frame,
108 struct frame_id *this_id)
110 struct sparc_frame_cache *cache =
111 sparc64_sol2_sigtramp_frame_cache (next_frame, this_cache);
113 (*this_id) = frame_id_build (cache->base, cache->pc);
117 sparc64_sol2_sigtramp_frame_prev_register (struct frame_info *next_frame,
119 int regnum, int *optimizedp,
120 enum lval_type *lvalp,
122 int *realnump, void *valuep)
124 struct sparc_frame_cache *cache =
125 sparc64_sol2_sigtramp_frame_cache (next_frame, this_cache);
127 trad_frame_prev_register (next_frame, cache->saved_regs, regnum,
128 optimizedp, lvalp, addrp, realnump, valuep);
131 static const struct frame_unwind sparc64_sol2_sigtramp_frame_unwind =
134 sparc64_sol2_sigtramp_frame_this_id,
135 sparc64_sol2_sigtramp_frame_prev_register
138 static const struct frame_unwind *
139 sparc64_sol2_sigtramp_frame_sniffer (struct frame_info *next_frame)
141 CORE_ADDR pc = frame_pc_unwind (next_frame);
144 find_pc_partial_function (pc, &name, NULL, NULL);
145 if (sparc_sol2_pc_in_sigtramp (pc, name))
146 return &sparc64_sol2_sigtramp_frame_unwind;
153 sparc64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
155 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
157 frame_unwind_append_sniffer (gdbarch, sparc64_sol2_sigtramp_frame_sniffer);
159 sparc64_init_abi (info, gdbarch);
161 /* Solaris has SVR4-style shared libraries... */
162 set_gdbarch_in_solib_call_trampoline (gdbarch, in_plt_section);
163 set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
164 set_solib_svr4_fetch_link_map_offsets
165 (gdbarch, svr4_lp64_fetch_link_map_offsets);
167 /* ...which means that we need some special handling when doing
168 prologue analysis. */
169 tdep->plt_entry_size = 16;
171 /* Solaris has kernel-assisted single-stepping support. */
172 set_gdbarch_software_single_step (gdbarch, NULL);
176 /* Provide a prototype to silence -Wmissing-prototypes. */
177 void _initialize_sparc64_sol2_tdep (void);
180 _initialize_sparc64_sol2_tdep (void)
182 gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
183 GDB_OSABI_SOLARIS, sparc64_sol2_init_abi);