gdb/sparc-sol2-nat.c

   1 /* Native-dependent code for Solaris SPARC.
   2
   3    Copyright (C) 2003, 2004, 2007, 2008 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
  28 /* This file provids the (temporary) glue between the Solaris SPARC
  29    target dependent code and the machine independent SVR4 /proc
  30    support.  */
  31
  32 /* Solaris 7 (Solaris 2.7, SunOS 5.7) and up support two process data
  33    models, the traditional 32-bit data model (ILP32) and the 64-bit
  34    data model (LP64).  The format of /proc depends on the data model
  35    of the observer (the controlling process, GDB in our case).  The
  36    Solaris header files conveniently define PR_MODEL_NATIVE to the
  37    data model of the controlling process.  If its value is
  38    PR_MODEL_LP64, we know that GDB is being compiled as a 64-bit
  39    program.
  40
  41    GNU/Linux uses the same formats as Solaris for its core files (but
  42    not for ptrace(2)).  The GNU/Linux headers don't define
  43    PR_MODEL_NATIVE though.  Therefore we rely on the __arch64__ define
  44    provided by GCC to determine the appropriate data model.
  45
  46    Note that a 32-bit GDB won't be able to debug a 64-bit target
  47    process using /proc on Solaris.  */
  48
  49 #if (defined (__arch64__) || \
  50      (defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)))
  51
  52 #include "sparc64-tdep.h"
  53
  54 #define sparc_supply_gregset sparc64_supply_gregset
  55 #define sparc_supply_fpregset sparc64_supply_fpregset
  56 #define sparc_collect_gregset sparc64_collect_gregset
  57 #define sparc_collect_fpregset sparc64_collect_fpregset
  58
  59 #define sparc_sol2_gregset sparc64_sol2_gregset
  60 #define sparc_sol2_fpregset sparc64_sol2_fpregset
  61
  62 #else
  63
  64 #define sparc_supply_gregset sparc32_supply_gregset
  65 #define sparc_supply_fpregset sparc32_supply_fpregset
  66 #define sparc_collect_gregset sparc32_collect_gregset
  67 #define sparc_collect_fpregset sparc32_collect_fpregset
  68
  69 #define sparc_sol2_gregset sparc32_sol2_gregset
  70 #define sparc_sol2_fpregset sparc32_sol2_fpregset
  71
  72 #endif
  73
  74 void
  75 supply_gregset (struct regcache *regcache, const prgregset_t *gregs)
  76 {
  77   sparc_supply_gregset (&sparc_sol2_gregset, regcache, -1, gregs);
  78 }
  79
  80 void
  81 supply_fpregset (struct regcache *regcache, const prfpregset_t *fpregs)
  82 {
  83   sparc_supply_fpregset (regcache, -1, fpregs);
  84 }
  85
  86 void
  87 fill_gregset (const struct regcache *regcache, prgregset_t *gregs, int regnum)
  88 {
  89   sparc_collect_gregset (&sparc_sol2_gregset, regcache, regnum, gregs);
  90 }
  91
  92 void
  93 fill_fpregset (const struct regcache *regcache, prfpregset_t *fpregs, int regnum)
  94 {
  95   sparc_collect_fpregset (regcache, regnum, fpregs);
  96 }