tcg: Optionally sign-extend 32-bit arguments for 64-bit hosts.

[qemu.git] / tcg / sparc / tcg-target.h

/*
 * 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_SPARC 1

#if defined(__sparc_v9__) && !defined(__sparc_v8plus__)
#define TCG_TARGET_REG_BITS 64
#else
#define TCG_TARGET_REG_BITS 32
#endif

#define TCG_TARGET_WORDS_BIGENDIAN

#define TCG_TARGET_NB_REGS 32

enum {
    TCG_REG_G0 = 0,
    TCG_REG_G1,
    TCG_REG_G2,
    TCG_REG_G3,
    TCG_REG_G4,
    TCG_REG_G5,
    TCG_REG_G6,
    TCG_REG_G7,
    TCG_REG_O0,
    TCG_REG_O1,
    TCG_REG_O2,
    TCG_REG_O3,
    TCG_REG_O4,
    TCG_REG_O5,
    TCG_REG_O6,
    TCG_REG_O7,
    TCG_REG_L0,
    TCG_REG_L1,
    TCG_REG_L2,
    TCG_REG_L3,
    TCG_REG_L4,
    TCG_REG_L5,
    TCG_REG_L6,
    TCG_REG_L7,
    TCG_REG_I0,
    TCG_REG_I1,
    TCG_REG_I2,
    TCG_REG_I3,
    TCG_REG_I4,
    TCG_REG_I5,
    TCG_REG_I6,
    TCG_REG_I7,
};

#define TCG_CT_CONST_S11 0x100
#define TCG_CT_CONST_S13 0x200

/* used for function call generation */
#define TCG_REG_CALL_STACK TCG_REG_I6
#ifdef __arch64__
// Reserve space for AREG0
#define TCG_TARGET_STACK_MINFRAME (176 + 4 * (int)sizeof(long) + \
                                   TCG_STATIC_CALL_ARGS_SIZE)
#define TCG_TARGET_CALL_STACK_OFFSET (2047 - 16)
#define TCG_TARGET_STACK_ALIGN 16
#else
// AREG0 + one word for alignment
#define TCG_TARGET_STACK_MINFRAME (92 + (2 + 1) * (int)sizeof(long) + \
                                   TCG_STATIC_CALL_ARGS_SIZE)
#define TCG_TARGET_CALL_STACK_OFFSET TCG_TARGET_STACK_MINFRAME
#define TCG_TARGET_STACK_ALIGN 8
#endif

#ifdef __arch64__
#define TCG_TARGET_EXTEND_ARGS 1
#endif

/* optional instructions */
#define TCG_TARGET_HAS_div_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_div_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

/* Note: must be synced with dyngen-exec.h */
#ifdef CONFIG_SOLARIS
#define TCG_AREG0 TCG_REG_G2
#elif defined(__sparc_v9__)
#define TCG_AREG0 TCG_REG_G5
#else
#define TCG_AREG0 TCG_REG_G6
#endif

static inline void flush_icache_range(unsigned long start, unsigned long stop)
{
    unsigned long p;

    p = start & ~(8UL - 1UL);
    stop = (stop + (8UL - 1UL)) & ~(8UL - 1UL);

    for (; p < stop; p += 8)
        __asm__ __volatile__("flush\t%0" : : "r" (p));
}