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      1 /*
      2  * Tiny Code Generator for QEMU
      3  *
      4  * Copyright (c) 2008 Fabrice Bellard
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a copy
      7  * of this software and associated documentation files (the "Software"), to deal
      8  * in the Software without restriction, including without limitation the rights
      9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     10  * copies of the Software, and to permit persons to whom the Software is
     11  * furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     22  * THE SOFTWARE.
     23  */
     24 #define TCG_TARGET_SPARC 1
     25 
     26 #if defined(__sparc_v9__) && !defined(__sparc_v8plus__)
     27 #define TCG_TARGET_REG_BITS 64
     28 #else
     29 #define TCG_TARGET_REG_BITS 32
     30 #endif
     31 
     32 #define TCG_TARGET_WORDS_BIGENDIAN
     33 
     34 #define TCG_TARGET_NB_REGS 32
     35 
     36 enum {
     37     TCG_REG_G0 = 0,
     38     TCG_REG_G1,
     39     TCG_REG_G2,
     40     TCG_REG_G3,
     41     TCG_REG_G4,
     42     TCG_REG_G5,
     43     TCG_REG_G6,
     44     TCG_REG_G7,
     45     TCG_REG_O0,
     46     TCG_REG_O1,
     47     TCG_REG_O2,
     48     TCG_REG_O3,
     49     TCG_REG_O4,
     50     TCG_REG_O5,
     51     TCG_REG_O6,
     52     TCG_REG_O7,
     53     TCG_REG_L0,
     54     TCG_REG_L1,
     55     TCG_REG_L2,
     56     TCG_REG_L3,
     57     TCG_REG_L4,
     58     TCG_REG_L5,
     59     TCG_REG_L6,
     60     TCG_REG_L7,
     61     TCG_REG_I0,
     62     TCG_REG_I1,
     63     TCG_REG_I2,
     64     TCG_REG_I3,
     65     TCG_REG_I4,
     66     TCG_REG_I5,
     67     TCG_REG_I6,
     68     TCG_REG_I7,
     69 };
     70 
     71 #define TCG_CT_CONST_S11 0x100
     72 #define TCG_CT_CONST_S13 0x200
     73 
     74 /* used for function call generation */
     75 #define TCG_REG_CALL_STACK TCG_REG_I6
     76 #ifdef __arch64__
     77 // Reserve space for AREG0
     78 #define TCG_TARGET_STACK_MINFRAME (176 + 4 * (int)sizeof(long) + \
     79                                    TCG_STATIC_CALL_ARGS_SIZE)
     80 #define TCG_TARGET_CALL_STACK_OFFSET (2047 - 16)
     81 #define TCG_TARGET_STACK_ALIGN 16
     82 #else
     83 // AREG0 + one word for alignment
     84 #define TCG_TARGET_STACK_MINFRAME (92 + (2 + 1) * (int)sizeof(long) + \
     85                                    TCG_STATIC_CALL_ARGS_SIZE)
     86 #define TCG_TARGET_CALL_STACK_OFFSET TCG_TARGET_STACK_MINFRAME
     87 #define TCG_TARGET_STACK_ALIGN 8
     88 #endif
     89 
     90 #ifdef __arch64__
     91 #define TCG_TARGET_EXTEND_ARGS 1
     92 #endif
     93 
     94 /* optional instructions */
     95 #define TCG_TARGET_HAS_div_i32
     96 // #define TCG_TARGET_HAS_rot_i32
     97 // #define TCG_TARGET_HAS_ext8s_i32
     98 // #define TCG_TARGET_HAS_ext16s_i32
     99 // #define TCG_TARGET_HAS_ext8u_i32
    100 // #define TCG_TARGET_HAS_ext16u_i32
    101 // #define TCG_TARGET_HAS_bswap16_i32
    102 // #define TCG_TARGET_HAS_bswap32_i32
    103 #define TCG_TARGET_HAS_neg_i32
    104 #define TCG_TARGET_HAS_not_i32
    105 #define TCG_TARGET_HAS_andc_i32
    106 #define TCG_TARGET_HAS_orc_i32
    107 // #define TCG_TARGET_HAS_eqv_i32
    108 // #define TCG_TARGET_HAS_nand_i32
    109 // #define TCG_TARGET_HAS_nor_i32
    110 
    111 #if TCG_TARGET_REG_BITS == 64
    112 #define TCG_TARGET_HAS_div_i64
    113 // #define TCG_TARGET_HAS_rot_i64
    114 // #define TCG_TARGET_HAS_ext8s_i64
    115 // #define TCG_TARGET_HAS_ext16s_i64
    116 #define TCG_TARGET_HAS_ext32s_i64
    117 // #define TCG_TARGET_HAS_ext8u_i64
    118 // #define TCG_TARGET_HAS_ext16u_i64
    119 #define TCG_TARGET_HAS_ext32u_i64
    120 // #define TCG_TARGET_HAS_bswap16_i64
    121 // #define TCG_TARGET_HAS_bswap32_i64
    122 // #define TCG_TARGET_HAS_bswap64_i64
    123 #define TCG_TARGET_HAS_neg_i64
    124 #define TCG_TARGET_HAS_not_i64
    125 #define TCG_TARGET_HAS_andc_i64
    126 #define TCG_TARGET_HAS_orc_i64
    127 // #define TCG_TARGET_HAS_eqv_i64
    128 // #define TCG_TARGET_HAS_nand_i64
    129 // #define TCG_TARGET_HAS_nor_i64
    130 #endif
    131 
    132 /* Note: must be synced with dyngen-exec.h */
    133 #ifdef CONFIG_SOLARIS
    134 #define TCG_AREG0 TCG_REG_G2
    135 #elif defined(__sparc_v9__)
    136 #define TCG_AREG0 TCG_REG_G5
    137 #else
    138 #define TCG_AREG0 TCG_REG_G6
    139 #endif
    140 
    141 static inline void flush_icache_range(unsigned long start, unsigned long stop)
    142 {
    143     unsigned long p;
    144 
    145     p = start & ~(8UL - 1UL);
    146     stop = (stop + (8UL - 1UL)) & ~(8UL - 1UL);
    147 
    148     for (; p < stop; p += 8)
    149         __asm__ __volatile__("flush\t%0" : : "r" (p));
    150 }
    151