text: /* Target-dependent code for AMD64 Solaris.
  
     Copyright (C) 2001-2014 Free Software Foundation, Inc.
  
     Contributed by Joseph Myers, CodeSourcery, LLC.
  
     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 "gdbcore.h"
  #include "regcache.h"
  #include "osabi.h"
  #include "symtab.h"
  
  #include <string.h>
  
  #include "sol2-tdep.h"
  #include "amd64-tdep.h"
  #include "solib-svr4.h"
  
  /* Mapping between the general-purpose registers in gregset_t format
     and GDB's register cache layout.  */
  
  /* From <sys/regset.h>.  */
  static int amd64_sol2_gregset_reg_offset[] = {
    14 * 8,			/* %rax */
    11 * 8,			/* %rbx */
    13 * 8,			/* %rcx */
    12 * 8,			/* %rdx */
    9 * 8,			/* %rsi */
    8 * 8,			/* %rdi */
    10 * 8,			/* %rbp */
    20 * 8,			/* %rsp */
    7 * 8,			/* %r8 ...  */
    6 * 8,
    5 * 8,
    4 * 8,
    3 * 8,
    2 * 8,
    1 * 8,
    0 * 8,			/* ... %r15 */
    17 * 8,			/* %rip */
    19 * 8,			/* %eflags */
    18 * 8,			/* %cs */
    21 * 8,			/* %ss */
    25 * 8,			/* %ds */
    24 * 8,			/* %es */
    22 * 8,			/* %fs */
    23 * 8			/* %gs */
  };
  
  
  /* Return whether THIS_FRAME corresponds to a Solaris sigtramp
     routine.  */
  
  static int
  amd64_sol2_sigtramp_p (struct frame_info *this_frame)
  {
    CORE_ADDR pc = get_frame_pc (this_frame);
    const char *name;
  
    find_pc_partial_function (pc, &name, NULL, NULL);
    return (name && (strcmp ("sigacthandler", name) == 0
  		   || strcmp (name, "ucbsigvechandler") == 0));
  }
  
  /* Solaris doesn't have a 'struct sigcontext', but it does have a
     'mcontext_t' that contains the saved set of machine registers.  */
  
  static CORE_ADDR
  amd64_sol2_mcontext_addr (struct frame_info *this_frame)
  {
    CORE_ADDR sp, ucontext_addr;
  
    sp = get_frame_register_unsigned (this_frame, AMD64_RSP_REGNUM);
    ucontext_addr = get_frame_memory_unsigned (this_frame, sp + 8, 8);
  
    return ucontext_addr + 72;
  }
  
  static void
  amd64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
  {
    struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  
    tdep->gregset_reg_offset = amd64_sol2_gregset_reg_offset;
    tdep->gregset_num_regs = ARRAY_SIZE (amd64_sol2_gregset_reg_offset);
    tdep->sizeof_gregset = 28 * 8;
  
    amd64_init_abi (info, gdbarch);
  
    tdep->sigtramp_p = amd64_sol2_sigtramp_p;
    tdep->sigcontext_addr = amd64_sol2_mcontext_addr;
    tdep->sc_reg_offset = tdep->gregset_reg_offset;
    tdep->sc_num_regs = tdep->gregset_num_regs;
  
    /* Solaris uses SVR4-style shared libraries.  */
    set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
    set_solib_svr4_fetch_link_map_offsets
      (gdbarch, svr4_lp64_fetch_link_map_offsets);
  
    /* How to print LWP PTIDs from core files.  */
    set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
  }
  
  
  /* Provide a prototype to silence -Wmissing-prototypes.  */
  extern void _initialize_amd64_sol2_tdep (void);
  
  void
  _initialize_amd64_sol2_tdep (void)
  {
    gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
  			  GDB_OSABI_SOLARIS, amd64_sol2_init_abi);
  }
  