1 /*

     2  * Tiny Code Generator for QEMU

     3  *

     4  * Copyright (c) 2008 Fabrice Bellard

     5  * Copyright (c) 2008 Andrzej Zaborowski

     6  *

     7  * Permission is hereby granted, free of charge, to any person obtaining a copy

     8  * of this software and associated documentation files (the "Software"), to deal

     9  * in the Software without restriction, including without limitation the rights

    10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

    11  * copies of the Software, and to permit persons to whom the Software is

    12  * furnished to do so, subject to the following conditions:

    13  *

    14  * The above copyright notice and this permission notice shall be included in

    15  * all copies or substantial portions of the Software.

    16  *

    17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

    18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

    19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

    20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

    21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

    22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

    23  * THE SOFTWARE.

    24  */

    25 #define TCG_TARGET_ARM 1

    26 

    27 #define TCG_TARGET_REG_BITS 32

    28 #undef TCG_TARGET_WORDS_BIGENDIAN

    29 #undef TCG_TARGET_HAS_div_i32

    30 #undef TCG_TARGET_HAS_div_i64

    31 #undef TCG_TARGET_HAS_bswap_i32

    32 #define TCG_TARGET_HAS_ext8s_i32

    33 #define TCG_TARGET_HAS_ext16s_i32

    34 #define TCG_TARGET_HAS_neg_i32

    35 #undef TCG_TARGET_HAS_neg_i64

    36 #undef TCG_TARGET_STACK_GROWSUP

    37 

    38 enum {

    39     TCG_REG_R0 = 0,

    40     TCG_REG_R1,

    41     TCG_REG_R2,

    42     TCG_REG_R3,

    43     TCG_REG_R4,

    44     TCG_REG_R5,

    45     TCG_REG_R6,

    46     TCG_REG_R7,

    47     TCG_REG_R8,

    48     TCG_REG_R9,

    49     TCG_REG_R10,

    50     TCG_REG_R11,

    51     TCG_REG_R12,

    52     TCG_REG_R13,

    53     TCG_REG_R14,

    54     TCG_TARGET_NB_REGS

    55 };

    56 

    57 /* used for function call generation */

    58 #define TCG_REG_CALL_STACK		TCG_REG_R13

    59 #define TCG_TARGET_STACK_ALIGN		8

    60 #define TCG_TARGET_CALL_STACK_OFFSET	0

    61 

    62 enum {

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

    64     TCG_AREG0 = TCG_REG_R7,

    65     TCG_AREG1 = TCG_REG_R4,

    66     TCG_AREG2 = TCG_REG_R5,

    67     TCG_AREG3 = TCG_REG_R6,

    68 };

    69 

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

    71 {

    72 #if QEMU_GNUC_PREREQ(4, 1)

    73     void __clear_cache(char *beg, char *end);

    74     __clear_cache((char *) start, (char *) stop);

    75 #else

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

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

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

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

    80 #endif

    81 }