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[/] [openrisc/] [tags/] [gnu-src/] [gdb-6.8/] [pre-binutils-2.20.1-sync/] [gdb/] [sparc64-sol2-tdep.c] - Rev 578
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/* Target-dependent code for Solaris UltraSPARC. Copyright (C) 2003, 2004, 2006, 2007, 2008 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "defs.h" #include "frame.h" #include "frame-unwind.h" #include "gdbarch.h" #include "symtab.h" #include "objfiles.h" #include "osabi.h" #include "trad-frame.h" #include "gdb_assert.h" #include "sol2-tdep.h" #include "sparc64-tdep.h" #include "solib-svr4.h" /* From <sys/regset.h>. */ const struct sparc_gregset sparc64_sol2_gregset = { 32 * 8, /* "tstate" */ 33 * 8, /* %pc */ 34 * 8, /* %npc */ 35 * 8, /* %y */ -1, /* %wim */ -1, /* %tbr */ 1 * 8, /* %g1 */ 16 * 8, /* %l0 */ 8 /* sizeof (%y) */ }; static struct sparc_frame_cache * sparc64_sol2_sigtramp_frame_cache (struct frame_info *next_frame, void **this_cache) { struct sparc_frame_cache *cache; CORE_ADDR mcontext_addr, addr; int regnum; if (*this_cache) return *this_cache; cache = sparc_frame_cache (next_frame, this_cache); gdb_assert (cache == *this_cache); cache->saved_regs = trad_frame_alloc_saved_regs (next_frame); /* The third argument is a pointer to an instance of `ucontext_t', which has a member `uc_mcontext' that contains the saved registers. */ regnum = (cache->frameless_p ? SPARC_O2_REGNUM : SPARC_I2_REGNUM); mcontext_addr = frame_unwind_register_unsigned (next_frame, regnum) + 64; cache->saved_regs[SPARC64_CCR_REGNUM].addr = mcontext_addr + 0 * 8; cache->saved_regs[SPARC64_PC_REGNUM].addr = mcontext_addr + 1 * 8; cache->saved_regs[SPARC64_NPC_REGNUM].addr = mcontext_addr + 2 * 8; cache->saved_regs[SPARC64_Y_REGNUM].addr = mcontext_addr + 3 * 8; cache->saved_regs[SPARC64_ASI_REGNUM].addr = mcontext_addr + 19 * 8; cache->saved_regs[SPARC64_FPRS_REGNUM].addr = mcontext_addr + 20 * 8; /* Since %g0 is always zero, keep the identity encoding. */ for (regnum = SPARC_G1_REGNUM, addr = mcontext_addr + 4 * 8; regnum <= SPARC_O7_REGNUM; regnum++, addr += 8) cache->saved_regs[regnum].addr = addr; if (get_frame_memory_unsigned (next_frame, mcontext_addr + 21 * 8, 8)) { /* The register windows haven't been flushed. */ for (regnum = SPARC_L0_REGNUM; regnum <= SPARC_I7_REGNUM; regnum++) trad_frame_set_unknown (cache->saved_regs, regnum); } else { CORE_ADDR sp; addr = cache->saved_regs[SPARC_SP_REGNUM].addr; sp = get_frame_memory_unsigned (next_frame, addr, 8); for (regnum = SPARC_L0_REGNUM, addr = sp + BIAS; regnum <= SPARC_I7_REGNUM; regnum++, addr += 8) cache->saved_regs[regnum].addr = addr; } return cache; } static void sparc64_sol2_sigtramp_frame_this_id (struct frame_info *next_frame, void **this_cache, struct frame_id *this_id) { struct sparc_frame_cache *cache = sparc64_sol2_sigtramp_frame_cache (next_frame, this_cache); (*this_id) = frame_id_build (cache->base, cache->pc); } static void sparc64_sol2_sigtramp_frame_prev_register (struct frame_info *next_frame, void **this_cache, int regnum, int *optimizedp, enum lval_type *lvalp, CORE_ADDR *addrp, int *realnump, gdb_byte *valuep) { struct sparc_frame_cache *cache = sparc64_sol2_sigtramp_frame_cache (next_frame, this_cache); trad_frame_get_prev_register (next_frame, cache->saved_regs, regnum, optimizedp, lvalp, addrp, realnump, valuep); } static const struct frame_unwind sparc64_sol2_sigtramp_frame_unwind = { SIGTRAMP_FRAME, sparc64_sol2_sigtramp_frame_this_id, sparc64_sol2_sigtramp_frame_prev_register }; static const struct frame_unwind * sparc64_sol2_sigtramp_frame_sniffer (struct frame_info *next_frame) { CORE_ADDR pc = frame_pc_unwind (next_frame); char *name; find_pc_partial_function (pc, &name, NULL, NULL); if (sparc_sol2_pc_in_sigtramp (pc, name)) return &sparc64_sol2_sigtramp_frame_unwind; return NULL; } void sparc64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); frame_unwind_append_sniffer (gdbarch, sparc64_sol2_sigtramp_frame_sniffer); sparc64_init_abi (info, gdbarch); /* The Sun compilers (Sun ONE Studio, Forte Developer, Sun WorkShop, SunPRO) compiler puts out 0 instead of the address in N_SO stabs. Starting with SunPRO 3.0, the compiler does this for N_FUN stabs too. */ set_gdbarch_sofun_address_maybe_missing (gdbarch, 1); /* The Sun compilers also do "globalization"; see the comment in sparc_sol2_static_transform_name for more information. */ set_gdbarch_static_transform_name (gdbarch, sparc_sol2_static_transform_name); /* Solaris has SVR4-style shared libraries... */ set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target); set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver); set_solib_svr4_fetch_link_map_offsets (gdbarch, svr4_lp64_fetch_link_map_offsets); /* ...which means that we need some special handling when doing prologue analysis. */ tdep->plt_entry_size = 16; /* Solaris has kernel-assisted single-stepping support. */ set_gdbarch_software_single_step (gdbarch, NULL); } /* Provide a prototype to silence -Wmissing-prototypes. */ void _initialize_sparc64_sol2_tdep (void); void _initialize_sparc64_sol2_tdep (void) { gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9, GDB_OSABI_SOLARIS, sparc64_sol2_init_abi); }
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