gdb/sparc-sol2-nat.c

   1 /* Native-dependent code for Solaris SPARC.
   2
   3    Copyright (C) 2003, 2004, 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 "regcache.h"
  22
  23 #include <sys/procfs.h>
  24 #include "gregset.h"
  25
  26 #include "sparc-tdep.h"
  27 #include "target.h"
  28 #include "procfs.h"
  29
  30 /* This file provids the (temporary) glue between the Solaris SPARC
  31    target dependent code and the machine independent SVR4 /proc
  32    support.  */
  33
  34 /* Solaris 7 (Solaris 2.7, SunOS 5.7) and up support two process data
  35    models, the traditional 32-bit data model (ILP32) and the 64-bit
  36    data model (LP64).  The format of /proc depends on the data model
  37    of the observer (the controlling process, GDB in our case).  The
  38    Solaris header files conveniently define PR_MODEL_NATIVE to the
  39    data model of the controlling process.  If its value is
  40    PR_MODEL_LP64, we know that GDB is being compiled as a 64-bit
  41    program.
  42
  43    GNU/Linux uses the same formats as Solaris for its core files (but
  44    not for ptrace(2)).  The GNU/Linux headers don't define
  45    PR_MODEL_NATIVE though.  Therefore we rely on the __arch64__ define
  46    provided by GCC to determine the appropriate data model.
  47
  48    Note that a 32-bit GDB won't be able to debug a 64-bit target
  49    process using /proc on Solaris.  */
  50
  51 #if (defined (__arch64__) || \
  52      (defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)))
  53
  54 #include "sparc64-tdep.h"
  55
  56 #define sparc_supply_gregset sparc64_supply_gregset
  57 #define sparc_supply_fpregset sparc64_supply_fpregset
  58 #define sparc_collect_gregset sparc64_collect_gregset
  59 #define sparc_collect_fpregset sparc64_collect_fpregset
  60
  61 #define sparc_sol2_gregset sparc64_sol2_gregset
  62 #define sparc_sol2_fpregset sparc64_sol2_fpregset
  63
  64 #else
  65
  66 #define sparc_supply_gregset sparc32_supply_gregset
  67 #define sparc_supply_fpregset sparc32_supply_fpregset
  68 #define sparc_collect_gregset sparc32_collect_gregset
  69 #define sparc_collect_fpregset sparc32_collect_fpregset
  70
  71 #define sparc_sol2_gregset sparc32_sol2_gregset
  72 #define sparc_sol2_fpregset sparc32_sol2_fpregset
  73
  74 #endif
  75
  76 void
  77 supply_gregset (struct regcache *regcache, const prgregset_t *gregs)
  78 {
  79   sparc_supply_gregset (&sparc_sol2_gregset, regcache, -1, gregs);
  80 }
  81
  82 void
  83 supply_fpregset (struct regcache *regcache, const prfpregset_t *fpregs)
  84 {
  85   sparc_supply_fpregset (regcache, -1, fpregs);
  86 }
  87
  88 void
  89 fill_gregset (const struct regcache *regcache, prgregset_t *gregs, int regnum)
  90 {
  91   sparc_collect_gregset (&sparc_sol2_gregset, regcache, regnum, gregs);
  92 }
  93
  94 void
  95 fill_fpregset (const struct regcache *regcache, prfpregset_t *fpregs, int regnum)
  96 {
  97   sparc_collect_fpregset (regcache, regnum, fpregs);
  98 }
  99
 100 /* Provide a prototype to silence -Wmissing-prototypes.  */
 101 extern initialize_file_ftype _initialize_sparc_sol2_nat;
 102
 103 void
 104 _initialize_sparc_sol2_nat (void)
 105 {
 106   struct target_ops *t;
 107
 108   t = procfs_target ();
 109 #ifdef NEW_PROC_API     /* Solaris 6 and above can do HW watchpoints */
 110   procfs_use_watchpoints (t);
 111 #endif
 112   add_target (t);
 113 }