gdb/sparc-sol2-nat.c

   1 /* Native-dependent code for Solaris SPARC.
   2
   3    Copyright (C) 2003, 2004, 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 "regcache.h"
  23
  24 #include <sys/procfs.h>
  25 #include "gregset.h"
  26
  27 #include "sparc-tdep.h"
  28 #include "target.h"
  29 #include "procfs.h"
  30
  31 /* This file provids the (temporary) glue between the Solaris SPARC
  32    target dependent code and the machine independent SVR4 /proc
  33    support.  */
  34
  35 /* Solaris 7 (Solaris 2.7, SunOS 5.7) and up support two process data
  36    models, the traditional 32-bit data model (ILP32) and the 64-bit
  37    data model (LP64).  The format of /proc depends on the data model
  38    of the observer (the controlling process, GDB in our case).  The
  39    Solaris header files conveniently define PR_MODEL_NATIVE to the
  40    data model of the controlling process.  If its value is
  41    PR_MODEL_LP64, we know that GDB is being compiled as a 64-bit
  42    program.
  43
  44    GNU/Linux uses the same formats as Solaris for its core files (but
  45    not for ptrace(2)).  The GNU/Linux headers don't define
  46    PR_MODEL_NATIVE though.  Therefore we rely on the __arch64__ define
  47    provided by GCC to determine the appropriate data model.
  48
  49    Note that a 32-bit GDB won't be able to debug a 64-bit target
  50    process using /proc on Solaris.  */
  51
  52 #if (defined (__arch64__) || \
  53      (defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)))
  54
  55 #include "sparc64-tdep.h"
  56
  57 #define sparc_supply_gregset sparc64_supply_gregset
  58 #define sparc_supply_fpregset sparc64_supply_fpregset
  59 #define sparc_collect_gregset sparc64_collect_gregset
  60 #define sparc_collect_fpregset sparc64_collect_fpregset
  61
  62 #define sparc_sol2_gregset sparc64_sol2_gregset
  63 #define sparc_sol2_fpregset sparc64_sol2_fpregset
  64
  65 #else
  66
  67 #define sparc_supply_gregset sparc32_supply_gregset
  68 #define sparc_supply_fpregset sparc32_supply_fpregset
  69 #define sparc_collect_gregset sparc32_collect_gregset
  70 #define sparc_collect_fpregset sparc32_collect_fpregset
  71
  72 #define sparc_sol2_gregset sparc32_sol2_gregset
  73 #define sparc_sol2_fpregset sparc32_sol2_fpregset
  74
  75 #endif
  76
  77 void
  78 supply_gregset (struct regcache *regcache, const prgregset_t *gregs)
  79 {
  80   sparc_supply_gregset (&sparc_sol2_gregset, regcache, -1, gregs);
  81 }
  82
  83 void
  84 supply_fpregset (struct regcache *regcache, const prfpregset_t *fpregs)
  85 {
  86   sparc_supply_fpregset (regcache, -1, fpregs);
  87 }
  88
  89 void
  90 fill_gregset (const struct regcache *regcache, prgregset_t *gregs, int regnum)
  91 {
  92   sparc_collect_gregset (&sparc_sol2_gregset, regcache, regnum, gregs);
  93 }
  94
  95 void
  96 fill_fpregset (const struct regcache *regcache,
  97                prfpregset_t *fpregs, int regnum)
  98 {
  99   sparc_collect_fpregset (regcache, regnum, fpregs);
 100 }
 101
 102 /* Provide a prototype to silence -Wmissing-prototypes.  */
 103 extern initialize_file_ftype _initialize_sparc_sol2_nat;
 104
 105 void
 106 _initialize_sparc_sol2_nat (void)
 107 {
 108   struct target_ops *t;
 109
 110   t = procfs_target ();
 111 #ifdef NEW_PROC_API     /* Solaris 6 and above can do HW watchpoints.  */
 112   procfs_use_watchpoints (t);
 113 #endif
 114   add_target (t);
 115 }