dyngen-exec.h

   1 /*
   2  *  dyngen defines for micro operation code
   3  *
   4  *  Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #if !defined(__DYNGEN_EXEC_H__)
  20 #define __DYNGEN_EXEC_H__
  21
  22 #include "qemu-common.h"
  23
  24 #ifdef __OpenBSD__
  25 #include <sys/types.h>
  26 #endif
  27
  28 /* XXX: This may be wrong for 64-bit ILP32 hosts.  */
  29 typedef void * host_reg_t;
  30
  31 #if defined(__i386__)
  32 #define AREG0 "ebp"
  33 #elif defined(__x86_64__)
  34 #define AREG0 "r14"
  35 #elif defined(_ARCH_PPC)
  36 #define AREG0 "r27"
  37 #elif defined(__arm__)
  38 #define AREG0 "r7"
  39 #elif defined(__hppa__)
  40 #define AREG0 "r17"
  41 #elif defined(__mips__)
  42 #define AREG0 "s0"
  43 #elif defined(__sparc__)
  44 #ifdef CONFIG_SOLARIS
  45 #define AREG0 "g2"
  46 #else
  47 #ifdef __sparc_v9__
  48 #define AREG0 "g5"
  49 #else
  50 #define AREG0 "g6"
  51 #endif
  52 #endif
  53 #elif defined(__s390__)
  54 #define AREG0 "r10"
  55 #elif defined(__alpha__)
  56 /* Note $15 is the frame pointer, so anything in op-i386.c that would
  57    require a frame pointer, like alloca, would probably loose.  */
  58 #define AREG0 "$15"
  59 #elif defined(__mc68000)
  60 #define AREG0 "%a5"
  61 #elif defined(__ia64__)
  62 #define AREG0 "r7"
  63 #else
  64 #error unsupported CPU
  65 #endif
  66
  67 register CPUState *env asm(AREG0);
  68
  69 #define xglue(x, y) x ## y
  70 #define glue(x, y) xglue(x, y)
  71 #define stringify(s)    tostring(s)
  72 #define tostring(s)     #s
  73
  74 /* The return address may point to the start of the next instruction.
  75    Subtracting one gets us the call instruction itself.  */
  76 #if defined(__s390__) && !defined(__s390x__)
  77 # define GETPC() ((void*)(((unsigned long)__builtin_return_address(0) & 0x7fffffffUL) - 1))
  78 #elif defined(__arm__)
  79 /* Thumb return addresses have the low bit set, so we need to subtract two.
  80    This is still safe in ARM mode because instructions are 4 bytes.  */
  81 # define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 2))
  82 #else
  83 # define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 1))
  84 #endif
  85
  86 #endif /* !defined(__DYNGEN_EXEC_H__) */