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 /* prevent Solaris from trying to typedef FILE in gcc's
  23    include/floatingpoint.h which will conflict with the
  24    definition down below */
  25 #ifdef __sun__
  26 #define _FILEDEFED
  27 #endif
  28
  29 /* NOTE: standard headers should be used with special care at this
  30    point because host CPU registers are used as global variables. Some
  31    host headers do not allow that. */
  32 #include <stddef.h>
  33 #include <stdint.h>
  34 #include <stdbool.h>
  35
  36 #ifdef __OpenBSD__
  37 #include <sys/types.h>
  38 #endif
  39
  40 /* XXX: This may be wrong for 64-bit ILP32 hosts.  */
  41 typedef void * host_reg_t;
  42
  43 #ifdef CONFIG_BSD
  44 typedef struct __sFILE FILE;
  45 #else
  46 typedef struct FILE FILE;
  47 #endif
  48 extern int fprintf(FILE *, const char *, ...);
  49 extern int fputs(const char *, FILE *);
  50 extern int printf(const char *, ...);
  51
  52 #if defined(__i386__)
  53 #define AREG0 "ebp"
  54 #elif defined(__x86_64__)
  55 #define AREG0 "r14"
  56 #elif defined(_ARCH_PPC)
  57 #define AREG0 "r27"
  58 #elif defined(__arm__)
  59 #define AREG0 "r7"
  60 #elif defined(__hppa__)
  61 #define AREG0 "r17"
  62 #elif defined(__mips__)
  63 #define AREG0 "s0"
  64 #elif defined(__sparc__)
  65 #ifdef CONFIG_SOLARIS
  66 #define AREG0 "g2"
  67 #else
  68 #ifdef __sparc_v9__
  69 #define AREG0 "g5"
  70 #else
  71 #define AREG0 "g6"
  72 #endif
  73 #endif
  74 #elif defined(__s390__)
  75 #define AREG0 "r10"
  76 #elif defined(__alpha__)
  77 /* Note $15 is the frame pointer, so anything in op-i386.c that would
  78    require a frame pointer, like alloca, would probably loose.  */
  79 #define AREG0 "$15"
  80 #elif defined(__mc68000)
  81 #define AREG0 "%a5"
  82 #elif defined(__ia64__)
  83 #define AREG0 "r7"
  84 #else
  85 #error unsupported CPU
  86 #endif
  87
  88 #define xglue(x, y) x ## y
  89 #define glue(x, y) xglue(x, y)
  90 #define stringify(s)    tostring(s)
  91 #define tostring(s)     #s
  92
  93 /* The return address may point to the start of the next instruction.
  94    Subtracting one gets us the call instruction itself.  */
  95 #if defined(__s390__) && !defined(__s390x__)
  96 # define GETPC() ((void*)(((unsigned long)__builtin_return_address(0) & 0x7fffffffUL) - 1))
  97 #elif defined(__arm__)
  98 /* Thumb return addresses have the low bit set, so we need to subtract two.
  99    This is still safe in ARM mode because instructions are 4 bytes.  */
 100 # define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 2))
 101 #else
 102 # define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 1))
 103 #endif
 104
 105 #endif /* !defined(__DYNGEN_EXEC_H__) */