tcg/mips/tcg-target.h

   1 /*
   2  * Tiny Code Generator for QEMU
   3  *
   4  * Copyright (c) 2008-2009 Arnaud Patard <arnaud.patard@rtp-net.org>
   5  * Copyright (c) 2009 Aurelien Jarno <aurelien@aurel32.net>
   6  * Based on i386/tcg-target.c - Copyright (c) 2008 Fabrice Bellard
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24  * THE SOFTWARE.
  25  */
  26 #ifndef TCG_TARGET_MIPS
  27 #define TCG_TARGET_MIPS 1
  28
  29 #define TCG_TARGET_INSN_UNIT_SIZE 4
  30 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
  31 #define TCG_TARGET_NB_REGS 32
  32
  33 typedef enum {
  34     TCG_REG_ZERO = 0,
  35     TCG_REG_AT,
  36     TCG_REG_V0,
  37     TCG_REG_V1,
  38     TCG_REG_A0,
  39     TCG_REG_A1,
  40     TCG_REG_A2,
  41     TCG_REG_A3,
  42     TCG_REG_T0,
  43     TCG_REG_T1,
  44     TCG_REG_T2,
  45     TCG_REG_T3,
  46     TCG_REG_T4,
  47     TCG_REG_T5,
  48     TCG_REG_T6,
  49     TCG_REG_T7,
  50     TCG_REG_S0,
  51     TCG_REG_S1,
  52     TCG_REG_S2,
  53     TCG_REG_S3,
  54     TCG_REG_S4,
  55     TCG_REG_S5,
  56     TCG_REG_S6,
  57     TCG_REG_S7,
  58     TCG_REG_T8,
  59     TCG_REG_T9,
  60     TCG_REG_K0,
  61     TCG_REG_K1,
  62     TCG_REG_GP,
  63     TCG_REG_SP,
  64     TCG_REG_S8,
  65     TCG_REG_RA,
  66
  67     TCG_REG_CALL_STACK = TCG_REG_SP,
  68     TCG_AREG0 = TCG_REG_S0,
  69 } TCGReg;
  70
  71 /* used for function call generation */
  72 #define TCG_TARGET_STACK_ALIGN 8
  73 #define TCG_TARGET_CALL_STACK_OFFSET 16
  74 #define TCG_TARGET_CALL_ALIGN_ARGS 1
  75
  76 /* MOVN/MOVZ instructions detection */
  77 #if (defined(__mips_isa_rev) && (__mips_isa_rev >= 1)) || \
  78     defined(_MIPS_ARCH_LOONGSON2E) || defined(_MIPS_ARCH_LOONGSON2F) || \
  79     defined(_MIPS_ARCH_MIPS4)
  80 #define use_movnz_instructions  1
  81 #else
  82 extern bool use_movnz_instructions;
  83 #endif
  84
  85 /* MIPS32 instruction set detection */
  86 #if defined(__mips_isa_rev) && (__mips_isa_rev >= 1)
  87 #define use_mips32_instructions  1
  88 #else
  89 extern bool use_mips32_instructions;
  90 #endif
  91
  92 /* MIPS32R2 instruction set detection */
  93 #if defined(__mips_isa_rev) && (__mips_isa_rev >= 2)
  94 #define use_mips32r2_instructions  1
  95 #else
  96 extern bool use_mips32r2_instructions;
  97 #endif
  98
  99 /* MIPS32R6 instruction set detection */
 100 #if defined(__mips_isa_rev) && (__mips_isa_rev >= 6)
 101 #define use_mips32r6_instructions  1
 102 #else
 103 #define use_mips32r6_instructions  0
 104 #endif
 105
 106 /* optional instructions */
 107 #define TCG_TARGET_HAS_div_i32          1
 108 #define TCG_TARGET_HAS_rem_i32          1
 109 #define TCG_TARGET_HAS_not_i32          1
 110 #define TCG_TARGET_HAS_nor_i32          1
 111 #define TCG_TARGET_HAS_andc_i32         0
 112 #define TCG_TARGET_HAS_orc_i32          0
 113 #define TCG_TARGET_HAS_eqv_i32          0
 114 #define TCG_TARGET_HAS_nand_i32         0
 115 #define TCG_TARGET_HAS_mulu2_i32        (!use_mips32r6_instructions)
 116 #define TCG_TARGET_HAS_muls2_i32        (!use_mips32r6_instructions)
 117 #define TCG_TARGET_HAS_muluh_i32        1
 118 #define TCG_TARGET_HAS_mulsh_i32        1
 119
 120 /* optional instructions detected at runtime */
 121 #define TCG_TARGET_HAS_movcond_i32      use_movnz_instructions
 122 #define TCG_TARGET_HAS_bswap16_i32      use_mips32r2_instructions
 123 #define TCG_TARGET_HAS_bswap32_i32      use_mips32r2_instructions
 124 #define TCG_TARGET_HAS_deposit_i32      use_mips32r2_instructions
 125 #define TCG_TARGET_HAS_ext8s_i32        use_mips32r2_instructions
 126 #define TCG_TARGET_HAS_ext16s_i32       use_mips32r2_instructions
 127 #define TCG_TARGET_HAS_rot_i32          use_mips32r2_instructions
 128
 129 /* optional instructions automatically implemented */
 130 #define TCG_TARGET_HAS_neg_i32          0 /* sub  rd, zero, rt   */
 131 #define TCG_TARGET_HAS_ext8u_i32        0 /* andi rt, rs, 0xff   */
 132 #define TCG_TARGET_HAS_ext16u_i32       0 /* andi rt, rs, 0xffff */
 133
 134 #ifdef __OpenBSD__
 135 #include <machine/sysarch.h>
 136 #else
 137 #include <sys/cachectl.h>
 138 #endif
 139
 140 static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
 141 {
 142     cacheflush ((void *)start, stop-start, ICACHE);
 143 }
 144
 145 #endif