gdb/i386-sol2-nat.c

   1 /* Native-dependent code for Solaris x86.
   2
   3    Copyright (C) 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 #include "target.h"
  27 #include "procfs.h"
  28
  29 /* This file provids the (temporary) glue between the Solaris x86
  30    target dependent code and the machine independent SVR4 /proc
  31    support.  */
  32
  33 /* Solaris 10 (Solaris 2.10, SunOS 5.10) and up support two process
  34    data models, the traditional 32-bit data model (ILP32) and the
  35    64-bit data model (LP64).  The format of /proc depends on the data
  36    model of the observer (the controlling process, GDB in our case).
  37    The Solaris header files conveniently define PR_MODEL_NATIVE to the
  38    data model of the controlling process.  If its value is
  39    PR_MODEL_LP64, we know that GDB is being compiled as a 64-bit
  40    program.
  41
  42    Note that a 32-bit GDB won't be able to debug a 64-bit target
  43    process using /proc on Solaris.  */
  44
  45 #if defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
  46
  47 #include "amd64-nat.h"
  48 #include "amd64-tdep.h"
  49
  50 /* Mapping between the general-purpose registers in gregset_t format
  51    and GDB's register cache layout.  */
  52
  53 /* From <sys/regset.h>.  */
  54 static int amd64_sol2_gregset64_reg_offset[] = {
  55   14 * 8,                       /* %rax */
  56   11 * 8,                       /* %rbx */
  57   13 * 8,                       /* %rcx */
  58   12 * 8,                       /* %rdx */
  59   9 * 8,                        /* %rsi */
  60   8 * 8,                        /* %rdi */
  61   10 * 8,                       /* %rbp */
  62   20 * 8,                       /* %rsp */
  63   7 * 8,                        /* %r8 ...  */
  64   6 * 8,
  65   5 * 8,
  66   4 * 8,
  67   3 * 8,
  68   2 * 8,
  69   1 * 8,
  70   0 * 8,                        /* ... %r15 */
  71   17 * 8,                       /* %rip */
  72   16 * 8,                       /* %eflags */
  73   18 * 8,                       /* %cs */
  74   21 * 8,                       /* %ss */
  75   25 * 8,                       /* %ds */
  76   24 * 8,                       /* %es */
  77   22 * 8,                       /* %fs */
  78   23 * 8                        /* %gs */
  79 };
  80
  81 /* 32-bit registers are provided by Solaris in 64-bit format, so just
  82    give a subset of the list above.  */
  83 static int amd64_sol2_gregset32_reg_offset[] = {
  84   14 * 8,                       /* %eax */
  85   13 * 8,                       /* %ecx */
  86   12 * 8,                       /* %edx */
  87   11 * 8,                       /* %ebx */
  88   20 * 8,                       /* %esp */
  89   10 * 8,                       /* %ebp */
  90   9 * 8,                        /* %esi */
  91   8 * 8,                        /* %edi */
  92   17 * 8,                       /* %eip */
  93   16 * 8,                       /* %eflags */
  94   18 * 8,                       /* %cs */
  95   21 * 8,                       /* %ss */
  96   25 * 8,                       /* %ds */
  97   24 * 8,                       /* %es */
  98   22 * 8,                       /* %fs */
  99   23 * 8                        /* %gs */
 100 };
 101
 102 void
 103 supply_gregset (struct regcache *regcache, const prgregset_t *gregs)
 104 {
 105   amd64_supply_native_gregset (regcache, gregs, -1);
 106 }
 107
 108 void
 109 supply_fpregset (struct regcache *regcache, const prfpregset_t *fpregs)
 110 {
 111   amd64_supply_fxsave (regcache, -1, fpregs);
 112 }
 113
 114 void
 115 fill_gregset (const struct regcache *regcache,
 116               prgregset_t *gregs, int regnum)
 117 {
 118   amd64_collect_native_gregset (regcache, gregs, regnum);
 119 }
 120
 121 void
 122 fill_fpregset (const struct regcache *regcache,
 123                prfpregset_t *fpregs, int regnum)
 124 {
 125   amd64_collect_fxsave (regcache, regnum, fpregs);
 126 }
 127
 128 #else
 129
 130 /* For 32-bit Solaris x86, we use the Unix SVR4 code in i386v4-nat.c.  */
 131
 132 #endif
 133
 134 /* Provide a prototype to silence -Wmissing-prototypes.  */
 135 extern void _initialize_amd64_sol2_nat (void);
 136
 137 void
 138 _initialize_amd64_sol2_nat (void)
 139 {
 140   struct target_ops *t;
 141
 142   /* Fill in the generic procfs methods.  */
 143   t = procfs_target ();
 144
 145 #ifdef NEW_PROC_API     /* Solaris 6 and above can do HW watchpoints.  */
 146   procfs_use_watchpoints (t);
 147 #endif
 148
 149 #if defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
 150   amd64_native_gregset32_reg_offset = amd64_sol2_gregset32_reg_offset;
 151   amd64_native_gregset32_num_regs =
 152     ARRAY_SIZE (amd64_sol2_gregset32_reg_offset);
 153   amd64_native_gregset64_reg_offset = amd64_sol2_gregset64_reg_offset;
 154   amd64_native_gregset64_num_regs =
 155     ARRAY_SIZE (amd64_sol2_gregset64_reg_offset);
 156 #endif
 157
 158   add_target (t);
 159 }