gdb/sh-linux-tdep.c

   1 /* Target-dependent code for GNU/Linux Super-H.
   2
   3    Copyright (C) 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   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 3 of the License, or
  10    (at your option) any later version.
  11
  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.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "osabi.h"
  22
  23 #include "solib-svr4.h"
  24 #include "symtab.h"
  25
  26 #include "glibc-tdep.h"
  27 #include "sh-tdep.h"
  28 #include "linux-tdep.h"
  29
  30 #define REGSx16(base) \
  31   {(base),      0}, \
  32   {(base) +  1, 4}, \
  33   {(base) +  2, 8}, \
  34   {(base) +  3, 12}, \
  35   {(base) +  4, 16}, \
  36   {(base) +  5, 20}, \
  37   {(base) +  6, 24}, \
  38   {(base) +  7, 28}, \
  39   {(base) +  8, 32}, \
  40   {(base) +  9, 36}, \
  41   {(base) + 10, 40}, \
  42   {(base) + 11, 44}, \
  43   {(base) + 12, 48}, \
  44   {(base) + 13, 52}, \
  45   {(base) + 14, 56}, \
  46   {(base) + 15, 60}
  47
  48 /* Describe the contents of the .reg section of the core file.  */
  49
  50 static const struct sh_corefile_regmap gregs_table[] =
  51 {
  52   REGSx16 (R0_REGNUM),
  53   {PC_REGNUM,   64},
  54   {PR_REGNUM,   68},
  55   {SR_REGNUM,   72},
  56   {GBR_REGNUM,  76},
  57   {MACH_REGNUM, 80},
  58   {MACL_REGNUM, 84},
  59   {-1 /* Terminator.  */, 0}
  60 };
  61
  62 /* Describe the contents of the .reg2 section of the core file.  */
  63
  64 static const struct sh_corefile_regmap fpregs_table[] =
  65 {
  66   REGSx16 (FR0_REGNUM),
  67   /* REGSx16 xfp_regs omitted.  */
  68   {FPSCR_REGNUM, 128},
  69   {FPUL_REGNUM,  132},
  70   {-1 /* Terminator.  */, 0}
  71 };
  72
  73 static void
  74 sh_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
  75 {
  76   linux_init_abi (info, gdbarch);
  77
  78   /* GNU/Linux uses SVR4-style shared libraries.  */
  79   set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
  80   set_solib_svr4_fetch_link_map_offsets
  81     (gdbarch, svr4_ilp32_fetch_link_map_offsets);
  82   set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
  83
  84   set_gdbarch_fetch_tls_load_module_address (gdbarch,
  85                                              svr4_fetch_objfile_link_map);
  86
  87   /* Core files are supported for 32-bit SH only, at present.  */
  88   if (info.bfd_arch_info->mach != bfd_mach_sh5)
  89     {
  90       struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  91
  92       tdep->core_gregmap = (struct sh_corefile_regmap *)gregs_table;
  93       tdep->core_fpregmap = (struct sh_corefile_regmap *)fpregs_table;
  94     }
  95 }
  96
  97 /* Provide a prototype to silence -Wmissing-prototypes.  */
  98 extern void _initialize_sh_linux_tdep (void);
  99
 100 void
 101 _initialize_sh_linux_tdep (void)
 102 {
 103   gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_LINUX, sh_linux_init_abi);
 104 }