gdb/sh-linux-tdep.c

   1 /* Target-dependent code for GNU/Linux Super-H.
   2
   3    Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   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.
  12
  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.
  17
  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/>.  */
  20
  21 #include "defs.h"
  22 #include "osabi.h"
  23
  24 #include "solib-svr4.h"
  25 #include "symtab.h"
  26
  27 #include "glibc-tdep.h"
  28 #include "sh-tdep.h"
  29 #include "linux-tdep.h"
  30
  31 #define REGSx16(base) \
  32   {(base),      0}, \
  33   {(base) +  1, 4}, \
  34   {(base) +  2, 8}, \
  35   {(base) +  3, 12}, \
  36   {(base) +  4, 16}, \
  37   {(base) +  5, 20}, \
  38   {(base) +  6, 24}, \
  39   {(base) +  7, 28}, \
  40   {(base) +  8, 32}, \
  41   {(base) +  9, 36}, \
  42   {(base) + 10, 40}, \
  43   {(base) + 11, 44}, \
  44   {(base) + 12, 48}, \
  45   {(base) + 13, 52}, \
  46   {(base) + 14, 56}, \
  47   {(base) + 15, 60}
  48
  49 /* Describe the contents of the .reg section of the core file.  */
  50
  51 static const struct sh_corefile_regmap gregs_table[] =
  52 {
  53   REGSx16 (R0_REGNUM),
  54   {PC_REGNUM,   64},
  55   {PR_REGNUM,   68},
  56   {SR_REGNUM,   72},
  57   {GBR_REGNUM,  76},
  58   {MACH_REGNUM, 80},
  59   {MACL_REGNUM, 84},
  60   {-1 /* Terminator.  */, 0}
  61 };
  62
  63 /* Describe the contents of the .reg2 section of the core file.  */
  64
  65 static const struct sh_corefile_regmap fpregs_table[] =
  66 {
  67   REGSx16 (FR0_REGNUM),
  68   /* REGSx16 xfp_regs omitted.  */
  69   {FPSCR_REGNUM, 128},
  70   {FPUL_REGNUM,  132},
  71   {-1 /* Terminator.  */, 0}
  72 };
  73
  74 static void
  75 sh_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
  76 {
  77   linux_init_abi (info, gdbarch);
  78
  79   /* GNU/Linux uses SVR4-style shared libraries.  */
  80   set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
  81   set_solib_svr4_fetch_link_map_offsets
  82     (gdbarch, svr4_ilp32_fetch_link_map_offsets);
  83   set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
  84
  85   set_gdbarch_fetch_tls_load_module_address (gdbarch,
  86                                              svr4_fetch_objfile_link_map);
  87
  88   /* Core files are supported for 32-bit SH only, at present.  */
  89   if (info.bfd_arch_info->mach != bfd_mach_sh5)
  90     {
  91       struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  92
  93       tdep->core_gregmap = (struct sh_corefile_regmap *)gregs_table;
  94       tdep->core_fpregmap = (struct sh_corefile_regmap *)fpregs_table;
  95     }
  96 }
  97
  98 /* Provide a prototype to silence -Wmissing-prototypes.  */
  99 extern void _initialize_sh_linux_tdep (void);
 100
 101 void
 102 _initialize_sh_linux_tdep (void)
 103 {
 104   gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_LINUX, sh_linux_init_abi);
 105 }