Archipelago » qemu

/*

 * Tiny Code Generator for QEMU

 *

 * Copyright (c) 2008 Fabrice Bellard

 * Copyright (c) 2008 Andrzej Zaborowski

 *

 * 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_ARM 1

#define TCG_TARGET_REG_BITS 32

#undef TCG_TARGET_WORDS_BIGENDIAN

#undef TCG_TARGET_STACK_GROWSUP

enum {

    TCG_REG_R0 = 0,

    TCG_REG_R1,

    TCG_REG_R2,

    TCG_REG_R3,

    TCG_REG_R4,

    TCG_REG_R5,

    TCG_REG_R6,

    TCG_REG_R7,

    TCG_REG_R8,

    TCG_REG_R9,

    TCG_REG_R10,

    TCG_REG_R11,

    TCG_REG_R12,

    TCG_REG_R13,

    TCG_REG_R14,

};

#define TCG_TARGET_NB_REGS 15

#define TCG_CT_CONST_ARM 0x100

/* used for function call generation */

#define TCG_REG_CALL_STACK                TCG_REG_R13

#define TCG_TARGET_STACK_ALIGN                8

#define TCG_TARGET_CALL_STACK_OFFSET        0

/* optional instructions */

#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_not_i32

#define TCG_TARGET_HAS_neg_i32

// #define TCG_TARGET_HAS_rot_i32

#define TCG_TARGET_HAS_andc_i32

// #define TCG_TARGET_HAS_orc_i32

#define TCG_TARGET_HAS_GUEST_BASE

enum {

    /* Note: must be synced with dyngen-exec.h */

    TCG_AREG0 = TCG_REG_R7,

    TCG_AREG1 = TCG_REG_R4,

    TCG_AREG2 = TCG_REG_R5,

};

static inline void flush_icache_range(unsigned long start, unsigned long stop)

{

#if QEMU_GNUC_PREREQ(4, 1)

    __builtin___clear_cache((char *) start, (char *) stop);

#else

    register unsigned long _beg __asm ("a1") = start;

    register unsigned long _end __asm ("a2") = stop;

    register unsigned long _flg __asm ("a3") = 0;

    __asm __volatile__ ("swi 0x9f0002" : : "r" (_beg), "r" (_end), "r" (_flg));

#endif

}