gdb/sh-linux-tdep.c

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