gdb/i386-sol2-nat.c

   1 /* Native-dependent code for Solaris x86.
   2
   3    Copyright (C) 2004-2016 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 #include "target.h"
  26 #include "procfs.h"
  27
  28 /* This file provids the (temporary) glue between the Solaris x86
  29    target dependent code and the machine independent SVR4 /proc
  30    support.  */
  31
  32 /* Solaris 10 (Solaris 2.10, SunOS 5.10) and up support two process
  33    data models, the traditional 32-bit data model (ILP32) and the
  34    64-bit data model (LP64).  The format of /proc depends on the data
  35    model of the observer (the controlling process, GDB in our case).
  36    The 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    Note that a 32-bit GDB won't be able to debug a 64-bit target
  42    process using /proc on Solaris.  */
  43
  44 #if defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
  45
  46 #include "amd64-nat.h"
  47 #include "amd64-tdep.h"
  48
  49 /* Mapping between the general-purpose registers in gregset_t format
  50    and GDB's register cache layout.  */
  51
  52 /* From <sys/regset.h>.  */
  53 static int amd64_sol2_gregset64_reg_offset[] = {
  54   14 * 8,                       /* %rax */
  55   11 * 8,                       /* %rbx */
  56   13 * 8,                       /* %rcx */
  57   12 * 8,                       /* %rdx */
  58   9 * 8,                        /* %rsi */
  59   8 * 8,                        /* %rdi */
  60   10 * 8,                       /* %rbp */
  61   20 * 8,                       /* %rsp */
  62   7 * 8,                        /* %r8 ...  */
  63   6 * 8,
  64   5 * 8,
  65   4 * 8,
  66   3 * 8,
  67   2 * 8,
  68   1 * 8,
  69   0 * 8,                        /* ... %r15 */
  70   17 * 8,                       /* %rip */
  71   19 * 8,                       /* %eflags */
  72   18 * 8,                       /* %cs */
  73   21 * 8,                       /* %ss */
  74   25 * 8,                       /* %ds */
  75   24 * 8,                       /* %es */
  76   22 * 8,                       /* %fs */
  77   23 * 8                        /* %gs */
  78 };
  79
  80 /* 32-bit registers are provided by Solaris in 64-bit format, so just
  81    give a subset of the list above.  */
  82 static int amd64_sol2_gregset32_reg_offset[] = {
  83   14 * 8,                       /* %eax */
  84   13 * 8,                       /* %ecx */
  85   12 * 8,                       /* %edx */
  86   11 * 8,                       /* %ebx */
  87   20 * 8,                       /* %esp */
  88   10 * 8,                       /* %ebp */
  89   9 * 8,                        /* %esi */
  90   8 * 8,                        /* %edi */
  91   17 * 8,                       /* %eip */
  92   19 * 8,                       /* %eflags */
  93   18 * 8,                       /* %cs */
  94   21 * 8,                       /* %ss */
  95   25 * 8,                       /* %ds */
  96   24 * 8,                       /* %es */
  97   22 * 8,                       /* %fs */
  98   23 * 8                        /* %gs */
  99 };
 100
 101 void
 102 supply_gregset (struct regcache *regcache, const prgregset_t *gregs)
 103 {
 104   amd64_supply_native_gregset (regcache, gregs, -1);
 105 }
 106
 107 void
 108 supply_fpregset (struct regcache *regcache, const prfpregset_t *fpregs)
 109 {
 110   amd64_supply_fxsave (regcache, -1, fpregs);
 111 }
 112
 113 void
 114 fill_gregset (const struct regcache *regcache,
 115               prgregset_t *gregs, int regnum)
 116 {
 117   amd64_collect_native_gregset (regcache, gregs, regnum);
 118 }
 119
 120 void
 121 fill_fpregset (const struct regcache *regcache,
 122                prfpregset_t *fpregs, int regnum)
 123 {
 124   amd64_collect_fxsave (regcache, regnum, fpregs);
 125 }
 126
 127 #else
 128
 129 /* For 32-bit Solaris x86, we use the Unix SVR4 code in i386v4-nat.c.  */
 130
 131 #endif
 132
 133 /* Provide a prototype to silence -Wmissing-prototypes.  */
 134 extern void _initialize_amd64_sol2_nat (void);
 135
 136 void
 137 _initialize_amd64_sol2_nat (void)
 138 {
 139   struct target_ops *t;
 140
 141   /* Fill in the generic procfs methods.  */
 142   t = procfs_target ();
 143
 144 #ifdef NEW_PROC_API     /* Solaris 6 and above can do HW watchpoints.  */
 145   procfs_use_watchpoints (t);
 146 #endif
 147
 148 #if defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
 149   amd64_native_gregset32_reg_offset = amd64_sol2_gregset32_reg_offset;
 150   amd64_native_gregset32_num_regs =
 151     ARRAY_SIZE (amd64_sol2_gregset32_reg_offset);
 152   amd64_native_gregset64_reg_offset = amd64_sol2_gregset64_reg_offset;
 153   amd64_native_gregset64_num_regs =
 154     ARRAY_SIZE (amd64_sol2_gregset64_reg_offset);
 155 #endif
 156
 157   add_target (t);
 158 }