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
  27 #ifndef MIPS_TCG_TARGET_H
  28 #define MIPS_TCG_TARGET_H
  29
  30 #if _MIPS_SIM == _ABIO32
  31 # define TCG_TARGET_REG_BITS 32
  32 #elif _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
  33 # define TCG_TARGET_REG_BITS 64
  34 #else
  35 # error "Unknown ABI"
  36 #endif
  37
  38 #define TCG_TARGET_INSN_UNIT_SIZE 4
  39 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 16
  40 #define TCG_TARGET_NB_REGS 32
  41
  42 #define MAX_CODE_GEN_BUFFER_SIZE  ((size_t)-1)
  43
  44 typedef enum {
  45     TCG_REG_ZERO = 0,
  46     TCG_REG_AT,
  47     TCG_REG_V0,
  48     TCG_REG_V1,
  49     TCG_REG_A0,
  50     TCG_REG_A1,
  51     TCG_REG_A2,
  52     TCG_REG_A3,
  53     TCG_REG_T0,
  54     TCG_REG_T1,
  55     TCG_REG_T2,
  56     TCG_REG_T3,
  57     TCG_REG_T4,
  58     TCG_REG_T5,
  59     TCG_REG_T6,
  60     TCG_REG_T7,
  61     TCG_REG_S0,
  62     TCG_REG_S1,
  63     TCG_REG_S2,
  64     TCG_REG_S3,
  65     TCG_REG_S4,
  66     TCG_REG_S5,
  67     TCG_REG_S6,
  68     TCG_REG_S7,
  69     TCG_REG_T8,
  70     TCG_REG_T9,
  71     TCG_REG_K0,
  72     TCG_REG_K1,
  73     TCG_REG_GP,
  74     TCG_REG_SP,
  75     TCG_REG_S8,
  76     TCG_REG_RA,
  77
  78     TCG_REG_CALL_STACK = TCG_REG_SP,
  79     TCG_AREG0 = TCG_REG_S0,
  80 } TCGReg;
  81
  82 /* used for function call generation */
  83 #define TCG_TARGET_STACK_ALIGN        16
  84 #if _MIPS_SIM == _ABIO32
  85 # define TCG_TARGET_CALL_STACK_OFFSET 16
  86 #else
  87 # define TCG_TARGET_CALL_STACK_OFFSET 0
  88 #endif
  89 #define TCG_TARGET_CALL_ALIGN_ARGS    1
  90
  91 /* MOVN/MOVZ instructions detection */
  92 #if (defined(__mips_isa_rev) && (__mips_isa_rev >= 1)) || \
  93     defined(_MIPS_ARCH_LOONGSON2E) || defined(_MIPS_ARCH_LOONGSON2F) || \
  94     defined(_MIPS_ARCH_MIPS4)
  95 #define use_movnz_instructions  1
  96 #else
  97 extern bool use_movnz_instructions;
  98 #endif
  99
 100 /* MIPS32 instruction set detection */
 101 #if defined(__mips_isa_rev) && (__mips_isa_rev >= 1)
 102 #define use_mips32_instructions  1
 103 #else
 104 extern bool use_mips32_instructions;
 105 #endif
 106
 107 /* MIPS32R2 instruction set detection */
 108 #if defined(__mips_isa_rev) && (__mips_isa_rev >= 2)
 109 #define use_mips32r2_instructions  1
 110 #else
 111 extern bool use_mips32r2_instructions;
 112 #endif
 113
 114 /* MIPS32R6 instruction set detection */
 115 #if defined(__mips_isa_rev) && (__mips_isa_rev >= 6)
 116 #define use_mips32r6_instructions  1
 117 #else
 118 #define use_mips32r6_instructions  0
 119 #endif
 120
 121 /* optional instructions */
 122 #define TCG_TARGET_HAS_div_i32          1
 123 #define TCG_TARGET_HAS_rem_i32          1
 124 #define TCG_TARGET_HAS_not_i32          1
 125 #define TCG_TARGET_HAS_nor_i32          1
 126 #define TCG_TARGET_HAS_andc_i32         0
 127 #define TCG_TARGET_HAS_orc_i32          0
 128 #define TCG_TARGET_HAS_eqv_i32          0
 129 #define TCG_TARGET_HAS_nand_i32         0
 130 #define TCG_TARGET_HAS_mulu2_i32        (!use_mips32r6_instructions)
 131 #define TCG_TARGET_HAS_muls2_i32        (!use_mips32r6_instructions)
 132 #define TCG_TARGET_HAS_muluh_i32        1
 133 #define TCG_TARGET_HAS_mulsh_i32        1
 134 #define TCG_TARGET_HAS_bswap32_i32      1
 135 #define TCG_TARGET_HAS_direct_jump      0
 136
 137 #if TCG_TARGET_REG_BITS == 64
 138 #define TCG_TARGET_HAS_add2_i32         0
 139 #define TCG_TARGET_HAS_sub2_i32         0
 140 #define TCG_TARGET_HAS_extrl_i64_i32    1
 141 #define TCG_TARGET_HAS_extrh_i64_i32    1
 142 #define TCG_TARGET_HAS_div_i64          1
 143 #define TCG_TARGET_HAS_rem_i64          1
 144 #define TCG_TARGET_HAS_not_i64          1
 145 #define TCG_TARGET_HAS_nor_i64          1
 146 #define TCG_TARGET_HAS_andc_i64         0
 147 #define TCG_TARGET_HAS_orc_i64          0
 148 #define TCG_TARGET_HAS_eqv_i64          0
 149 #define TCG_TARGET_HAS_nand_i64         0
 150 #define TCG_TARGET_HAS_add2_i64         0
 151 #define TCG_TARGET_HAS_sub2_i64         0
 152 #define TCG_TARGET_HAS_mulu2_i64        (!use_mips32r6_instructions)
 153 #define TCG_TARGET_HAS_muls2_i64        (!use_mips32r6_instructions)
 154 #define TCG_TARGET_HAS_muluh_i64        1
 155 #define TCG_TARGET_HAS_mulsh_i64        1
 156 #define TCG_TARGET_HAS_ext32s_i64       1
 157 #define TCG_TARGET_HAS_ext32u_i64       1
 158 #endif
 159
 160 /* optional instructions detected at runtime */
 161 #define TCG_TARGET_HAS_movcond_i32      use_movnz_instructions
 162 #define TCG_TARGET_HAS_bswap16_i32      use_mips32r2_instructions
 163 #define TCG_TARGET_HAS_deposit_i32      use_mips32r2_instructions
 164 #define TCG_TARGET_HAS_extract_i32      use_mips32r2_instructions
 165 #define TCG_TARGET_HAS_sextract_i32     0
 166 #define TCG_TARGET_HAS_extract2_i32     0
 167 #define TCG_TARGET_HAS_ext8s_i32        use_mips32r2_instructions
 168 #define TCG_TARGET_HAS_ext16s_i32       use_mips32r2_instructions
 169 #define TCG_TARGET_HAS_rot_i32          use_mips32r2_instructions
 170 #define TCG_TARGET_HAS_clz_i32          use_mips32r2_instructions
 171 #define TCG_TARGET_HAS_ctz_i32          0
 172 #define TCG_TARGET_HAS_ctpop_i32        0
 173 #define TCG_TARGET_HAS_qemu_st8_i32     0
 174
 175 #if TCG_TARGET_REG_BITS == 64
 176 #define TCG_TARGET_HAS_movcond_i64      use_movnz_instructions
 177 #define TCG_TARGET_HAS_bswap16_i64      use_mips32r2_instructions
 178 #define TCG_TARGET_HAS_bswap32_i64      use_mips32r2_instructions
 179 #define TCG_TARGET_HAS_bswap64_i64      use_mips32r2_instructions
 180 #define TCG_TARGET_HAS_deposit_i64      use_mips32r2_instructions
 181 #define TCG_TARGET_HAS_extract_i64      use_mips32r2_instructions
 182 #define TCG_TARGET_HAS_sextract_i64     0
 183 #define TCG_TARGET_HAS_extract2_i64     0
 184 #define TCG_TARGET_HAS_ext8s_i64        use_mips32r2_instructions
 185 #define TCG_TARGET_HAS_ext16s_i64       use_mips32r2_instructions
 186 #define TCG_TARGET_HAS_rot_i64          use_mips32r2_instructions
 187 #define TCG_TARGET_HAS_clz_i64          use_mips32r2_instructions
 188 #define TCG_TARGET_HAS_ctz_i64          0
 189 #define TCG_TARGET_HAS_ctpop_i64        0
 190 #endif
 191
 192 /* optional instructions automatically implemented */
 193 #define TCG_TARGET_HAS_neg_i32          0 /* sub  rd, zero, rt   */
 194 #define TCG_TARGET_HAS_ext8u_i32        0 /* andi rt, rs, 0xff   */
 195 #define TCG_TARGET_HAS_ext16u_i32       0 /* andi rt, rs, 0xffff */
 196
 197 #if TCG_TARGET_REG_BITS == 64
 198 #define TCG_TARGET_HAS_neg_i64          0 /* sub  rd, zero, rt   */
 199 #define TCG_TARGET_HAS_ext8u_i64        0 /* andi rt, rs, 0xff   */
 200 #define TCG_TARGET_HAS_ext16u_i64       0 /* andi rt, rs, 0xffff */
 201 #endif
 202
 203 #define TCG_TARGET_DEFAULT_MO (0)
 204 #define TCG_TARGET_HAS_MEMORY_BSWAP     1
 205
 206 /* not defined -- call should be eliminated at compile time */
 207 void tb_target_set_jmp_target(uintptr_t, uintptr_t, uintptr_t, uintptr_t)
 208     QEMU_ERROR("code path is reachable");
 209
 210 #ifdef CONFIG_SOFTMMU
 211 #define TCG_TARGET_NEED_LDST_LABELS
 212 #endif
 213
 214 #endif