gdb/i386-sol2-nat.c

   1 /* Native-dependent code for Solaris x86.
   2
   3    Copyright (C) 2004, 2007 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 /* This file provids the (temporary) glue between the Solaris x86
  27    target dependent code and the machine independent SVR4 /proc
  28    support.  */
  29
  30 /* Solaris 10 (Solaris 2.10, SunOS 5.10) and up support two process
  31    data models, the traditional 32-bit data model (ILP32) and the
  32    64-bit data model (LP64).  The format of /proc depends on the data
  33    model of the observer (the controlling process, GDB in our case).
  34    The Solaris header files conveniently define PR_MODEL_NATIVE to the
  35    data model of the controlling process.  If its value is
  36    PR_MODEL_LP64, we know that GDB is being compiled as a 64-bit
  37    program.
  38
  39    Note that a 32-bit GDB won't be able to debug a 64-bit target
  40    process using /proc on Solaris.  */
  41
  42 #if defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
  43
  44 #include "amd64-nat.h"
  45 #include "amd64-tdep.h"
  46
  47 /* Mapping between the general-purpose registers in gregset_t format
  48    and GDB's register cache layout.  */
  49
  50 /* From <sys/regset.h>.  */
  51 static int amd64_sol2_gregset64_reg_offset[] = {
  52   14 * 8,                       /* %rax */
  53   11 * 8,                       /* %rbx */
  54   13 * 8,                       /* %rcx */
  55   12 * 8,                       /* %rdx */
  56   9 * 8,                        /* %rsi */
  57   8 * 8,                        /* %rdi */
  58   10 * 8,                       /* %rbp */
  59   20 * 8,                       /* %rsp */
  60   7 * 8,                        /* %r8 ... */
  61   6 * 8,
  62   5 * 8,
  63   4 * 8,
  64   3 * 8,
  65   2 * 8,
  66   1 * 8,
  67   0 * 8,                        /* ... %r15 */
  68   17 * 8,                       /* %rip */
  69   16 * 8,                       /* %eflags */
  70   18 * 8,                       /* %cs */
  71   21 * 8,                       /* %ss */
  72   25 * 8,                       /* %ds */
  73   24 * 8,                       /* %es */
  74   22 * 8,                       /* %fs */
  75   23 * 8                        /* %gs */
  76 };
  77
  78 /* 32-bit registers are provided by Solaris in 64-bit format, so just
  79    give a subset of the list above.  */
  80 static int amd64_sol2_gregset32_reg_offset[] = {
  81   14 * 8,                       /* %eax */
  82   13 * 8,                       /* %ecx */
  83   12 * 8,                       /* %edx */
  84   11 * 8,                       /* %ebx */
  85   20 * 8,                       /* %esp */
  86   10 * 8,                       /* %ebp */
  87   9 * 8,                        /* %esi */
  88   8 * 8,                        /* %edi */
  89   17 * 8,                       /* %eip */
  90   16 * 8,                       /* %eflags */
  91   18 * 8,                       /* %cs */
  92   21 * 8,                       /* %ss */
  93   25 * 8,                       /* %ds */
  94   24 * 8,                       /* %es */
  95   22 * 8,                       /* %fs */
  96   23 * 8                        /* %gs */
  97 };
  98
  99 void
 100 supply_gregset (struct regcache *regcache, const prgregset_t *gregs)
 101 {
 102   amd64_supply_native_gregset (regcache, gregs, -1);
 103 }
 104
 105 void
 106 supply_fpregset (struct regcache *regcache, const prfpregset_t *fpregs)
 107 {
 108   amd64_supply_fxsave (regcache, -1, fpregs);
 109 }
 110
 111 void
 112 fill_gregset (const struct regcache *regcache,
 113               prgregset_t *gregs, int regnum)
 114 {
 115   amd64_collect_native_gregset (regcache, gregs, regnum);
 116 }
 117
 118 void
 119 fill_fpregset (const struct regcache *regcache,
 120                prfpregset_t *fpregs, int regnum)
 121 {
 122   amd64_collect_fxsave (regcache, regnum, fpregs);
 123 }
 124
 125 #else
 126
 127 /* For 32-bit Solaris x86, we use the Unix SVR4 code in i386v4-nat.c.  */
 128
 129 #endif
 130
 131 /* Provide a prototype to silence -Wmissing-prototypes.  */
 132 extern void _initialize_amd64_sol2_nat (void);
 133
 134 void
 135 _initialize_amd64_sol2_nat (void)
 136 {
 137 #if defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
 138   amd64_native_gregset32_reg_offset = amd64_sol2_gregset32_reg_offset;
 139   amd64_native_gregset32_num_regs =
 140     ARRAY_SIZE (amd64_sol2_gregset32_reg_offset);
 141   amd64_native_gregset64_reg_offset = amd64_sol2_gregset64_reg_offset;
 142   amd64_native_gregset64_num_regs =
 143     ARRAY_SIZE (amd64_sol2_gregset64_reg_offset);
 144 #endif
 145 }