source: vbox/trunk/src/recompiler/tcg/i386/tcg-target.h@ 74745

/*
 * Tiny Code Generator for QEMU
 *
 * Copyright (c) 2008 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#define TCG_TARGET_I386 1

#if defined(__x86_64__)
# define TCG_TARGET_REG_BITS 64
#else
# define TCG_TARGET_REG_BITS 32
#endif
//#define TCG_TARGET_WORDS_BIGENDIAN

#if TCG_TARGET_REG_BITS == 64
# define TCG_TARGET_NB_REGS 16
#else
# define TCG_TARGET_NB_REGS 8
#endif

enum {
    TCG_REG_EAX = 0,
    TCG_REG_ECX,
    TCG_REG_EDX,
    TCG_REG_EBX,
    TCG_REG_ESP,
    TCG_REG_EBP,
    TCG_REG_ESI,
    TCG_REG_EDI,

    /* 64-bit registers; always define the symbols to avoid
       too much if-deffing.  */
    TCG_REG_R8,
    TCG_REG_R9,
    TCG_REG_R10,
    TCG_REG_R11,
    TCG_REG_R12,
    TCG_REG_R13,
    TCG_REG_R14,
    TCG_REG_R15,
    TCG_REG_RAX = TCG_REG_EAX,
    TCG_REG_RCX = TCG_REG_ECX,
    TCG_REG_RDX = TCG_REG_EDX,
    TCG_REG_RBX = TCG_REG_EBX,
    TCG_REG_RSP = TCG_REG_ESP,
    TCG_REG_RBP = TCG_REG_EBP,
    TCG_REG_RSI = TCG_REG_ESI,
    TCG_REG_RDI = TCG_REG_EDI,
};

#define TCG_CT_CONST_S32 0x100
#define TCG_CT_CONST_U32 0x200

/* used for function call generation */
#define TCG_REG_CALL_STACK TCG_REG_ESP
#define TCG_TARGET_STACK_ALIGN 16
#if defined(VBOX) && defined(__MINGW64__)
# define TCG_TARGET_CALL_STACK_OFFSET 32 /* 4 qword argument/register spill zone */
#else
#define TCG_TARGET_CALL_STACK_OFFSET 0
#endif

/* optional instructions */
#define TCG_TARGET_HAS_div2_i32
#define TCG_TARGET_HAS_rot_i32
#define TCG_TARGET_HAS_ext8s_i32
#define TCG_TARGET_HAS_ext16s_i32
#define TCG_TARGET_HAS_ext8u_i32
#define TCG_TARGET_HAS_ext16u_i32
#define TCG_TARGET_HAS_bswap16_i32
#define TCG_TARGET_HAS_bswap32_i32
#define TCG_TARGET_HAS_neg_i32
#define TCG_TARGET_HAS_not_i32
// #define TCG_TARGET_HAS_andc_i32
// #define TCG_TARGET_HAS_orc_i32
// #define TCG_TARGET_HAS_eqv_i32
// #define TCG_TARGET_HAS_nand_i32
// #define TCG_TARGET_HAS_nor_i32

#if TCG_TARGET_REG_BITS == 64
#define TCG_TARGET_HAS_div2_i64
#define TCG_TARGET_HAS_rot_i64
#define TCG_TARGET_HAS_ext8s_i64
#define TCG_TARGET_HAS_ext16s_i64
#define TCG_TARGET_HAS_ext32s_i64
#define TCG_TARGET_HAS_ext8u_i64
#define TCG_TARGET_HAS_ext16u_i64
#define TCG_TARGET_HAS_ext32u_i64
#define TCG_TARGET_HAS_bswap16_i64
#define TCG_TARGET_HAS_bswap32_i64
#define TCG_TARGET_HAS_bswap64_i64
#define TCG_TARGET_HAS_neg_i64
#define TCG_TARGET_HAS_not_i64
// #define TCG_TARGET_HAS_andc_i64
// #define TCG_TARGET_HAS_orc_i64
// #define TCG_TARGET_HAS_eqv_i64
// #define TCG_TARGET_HAS_nand_i64
// #define TCG_TARGET_HAS_nor_i64
#endif

#define TCG_TARGET_HAS_GUEST_BASE

/* Note: must be synced with dyngen-exec.h */
#if TCG_TARGET_REG_BITS == 64
# define TCG_AREG0 TCG_REG_R14
#else
# ifndef VBOX /* we're using ESI instead of EBP, probably due to frame pointer opt issues */
# define TCG_AREG0 TCG_REG_EBP
# else  /* VBOX */
#  define TCG_AREG0 TCG_REG_ESI
# endif /* VBOX */
#endif

static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
{
}