sljit_src/sljitNativeSPARC_32.c

   1 /*
   2  *    Stack-less Just-In-Time compiler
   3  *
   4  *    Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without modification, are
   7  * permitted provided that the following conditions are met:
   8  *
   9  *   1. Redistributions of source code must retain the above copyright notice, this list of
  10  *      conditions and the following disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above copyright notice, this list
  13  *      of conditions and the following disclaimer in the documentation and/or other materials
  14  *      provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
  17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
  19  * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  21  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  22  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  24  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw imm)
  28 {
  29         if (imm <= SIMM_MAX && imm >= SIMM_MIN)
  30                 return push_inst(compiler, OR | D(dst) | S1(0) | IMM(imm), DR(dst));
  31
  32         FAIL_IF(push_inst(compiler, SETHI | D(dst) | ((imm >> 10) & 0x3fffff), DR(dst)));
  33         return (imm & 0x3ff) ? push_inst(compiler, OR | D(dst) | S1(dst) | IMM_ARG | (imm & 0x3ff), DR(dst)) : SLJIT_SUCCESS;
  34 }
  35
  36 #define ARG2(flags, src2) ((flags & SRC2_IMM) ? IMM(src2) : S2(src2))
  37
  38 static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
  39         sljit_s32 dst, sljit_s32 src1, sljit_sw src2)
  40 {
  41         SLJIT_COMPILE_ASSERT(ICC_IS_SET == SET_FLAGS, icc_is_set_and_set_flags_must_be_the_same);
  42
  43         switch (op) {
  44         case SLJIT_MOV:
  45                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
  46                 if (dst != src2)
  47                         return push_inst(compiler, OR | D(dst) | S1(0) | S2(src2), DR(dst));
  48                 return SLJIT_SUCCESS;
  49
  50         case SLJIT_MOV_U8:
  51         case SLJIT_MOV_S8:
  52                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
  53                 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
  54                         if (op == SLJIT_MOV_U8)
  55                                 return push_inst(compiler, AND | D(dst) | S1(src2) | IMM(0xff), DR(dst));
  56                         FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src2) | IMM(24), DR(dst)));
  57                         return push_inst(compiler, SRA | D(dst) | S1(dst) | IMM(24), DR(dst));
  58                 }
  59                 SLJIT_ASSERT(dst == src2);
  60                 return SLJIT_SUCCESS;
  61
  62         case SLJIT_MOV_U16:
  63         case SLJIT_MOV_S16:
  64                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
  65                 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
  66                         FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src2) | IMM(16), DR(dst)));
  67                         return push_inst(compiler, (op == SLJIT_MOV_S16 ? SRA : SRL) | D(dst) | S1(dst) | IMM(16), DR(dst));
  68                 }
  69                 SLJIT_ASSERT(dst == src2);
  70                 return SLJIT_SUCCESS;
  71
  72         case SLJIT_NOT:
  73                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
  74                 return push_inst(compiler, XNOR | (flags & SET_FLAGS) | D(dst) | S1(0) | S2(src2), DR(dst) | (flags & SET_FLAGS));
  75
  76         case SLJIT_CLZ:
  77                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
  78                 FAIL_IF(push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(src2) | S2(0), SET_FLAGS));
  79                 FAIL_IF(push_inst(compiler, OR | D(TMP_REG1) | S1(0) | S2(src2), DR(TMP_REG1)));
  80                 FAIL_IF(push_inst(compiler, BICC | DA(0x1) | (7 & DISP_MASK), UNMOVABLE_INS));
  81                 FAIL_IF(push_inst(compiler, OR | D(dst) | S1(0) | IMM(32), UNMOVABLE_INS));
  82                 FAIL_IF(push_inst(compiler, OR | D(dst) | S1(0) | IMM(-1), DR(dst)));
  83
  84                 /* Loop. */
  85                 FAIL_IF(push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(TMP_REG1) | S2(0), SET_FLAGS));
  86                 FAIL_IF(push_inst(compiler, SLL | D(TMP_REG1) | S1(TMP_REG1) | IMM(1), DR(TMP_REG1)));
  87                 FAIL_IF(push_inst(compiler, BICC | DA(0xe) | (-2 & DISP_MASK), UNMOVABLE_INS));
  88                 return push_inst(compiler, ADD | D(dst) | S1(dst) | IMM(1), UNMOVABLE_INS);
  89
  90         case SLJIT_ADD:
  91                 compiler->status_flags_state = SLJIT_CURRENT_FLAGS_ADD_SUB;
  92                 return push_inst(compiler, ADD | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
  93
  94         case SLJIT_ADDC:
  95                 return push_inst(compiler, ADDC | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
  96
  97         case SLJIT_SUB:
  98                 compiler->status_flags_state = SLJIT_CURRENT_FLAGS_ADD_SUB;
  99                 return push_inst(compiler, SUB | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 100
 101         case SLJIT_SUBC:
 102                 return push_inst(compiler, SUBC | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 103
 104         case SLJIT_MUL:
 105                 compiler->status_flags_state = 0;
 106                 FAIL_IF(push_inst(compiler, SMUL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 107                 if (!(flags & SET_FLAGS))
 108                         return SLJIT_SUCCESS;
 109                 FAIL_IF(push_inst(compiler, SRA | D(TMP_REG1) | S1(dst) | IMM(31), DR(TMP_REG1)));
 110                 FAIL_IF(push_inst(compiler, RDY | D(TMP_LINK), DR(TMP_LINK)));
 111                 return push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(TMP_REG1) | S2(TMP_LINK), MOVABLE_INS | SET_FLAGS);
 112
 113         case SLJIT_AND:
 114                 return push_inst(compiler, AND | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 115
 116         case SLJIT_OR:
 117                 return push_inst(compiler, OR | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 118
 119         case SLJIT_XOR:
 120                 return push_inst(compiler, XOR | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 121
 122         case SLJIT_SHL:
 123                 FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 124                 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
 125
 126         case SLJIT_LSHR:
 127                 FAIL_IF(push_inst(compiler, SRL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 128                 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
 129
 130         case SLJIT_ASHR:
 131                 FAIL_IF(push_inst(compiler, SRA | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 132                 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
 133         }
 134
 135         SLJIT_UNREACHABLE();
 136         return SLJIT_SUCCESS;
 137 }
 138
 139 static sljit_s32 call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src)
 140 {
 141         sljit_s32 reg_index = 8;
 142         sljit_s32 word_reg_index = 8;
 143         sljit_s32 float_arg_index = 1;
 144         sljit_s32 double_arg_count = 0;
 145         sljit_s32 float_offset = (16 + 6) * sizeof(sljit_sw);
 146         sljit_s32 types = 0;
 147         sljit_s32 reg = 0;
 148         sljit_s32 move_to_tmp2 = 0;
 149
 150         if (src)
 151                 reg = reg_map[*src & REG_MASK];
 152
 153         arg_types >>= SLJIT_DEF_SHIFT;
 154
 155         while (arg_types) {
 156                 types = (types << SLJIT_DEF_SHIFT) | (arg_types & SLJIT_DEF_MASK);
 157
 158                 switch (arg_types & SLJIT_DEF_MASK) {
 159                 case SLJIT_ARG_TYPE_F32:
 160                         float_arg_index++;
 161                         if (reg_index == reg)
 162                                 move_to_tmp2 = 1;
 163                         reg_index++;
 164                         break;
 165                 case SLJIT_ARG_TYPE_F64:
 166                         float_arg_index++;
 167                         double_arg_count++;
 168                         if (reg_index == reg || reg_index + 1 == reg)
 169                                 move_to_tmp2 = 1;
 170                         reg_index += 2;
 171                         break;
 172                 default:
 173                         if (reg_index != word_reg_index && reg_index == reg)
 174                                 move_to_tmp2 = 1;
 175                         reg_index++;
 176                         word_reg_index++;
 177                         break;
 178                 }
 179
 180                 arg_types >>= SLJIT_DEF_SHIFT;
 181         }
 182
 183         if (move_to_tmp2) {
 184                 if (reg < 14)
 185                         FAIL_IF(push_inst(compiler, OR | D(TMP_REG1) | S1(0) | S2A(reg), DR(TMP_REG1)));
 186                 *src = TMP_REG1;
 187         }
 188
 189         arg_types = types;
 190
 191         while (arg_types) {
 192                 switch (arg_types & SLJIT_DEF_MASK) {
 193                 case SLJIT_ARG_TYPE_F32:
 194                         float_arg_index--;
 195                         FAIL_IF(push_inst(compiler, STF | FD(float_arg_index) | S1(SLJIT_SP) | IMM(float_offset), MOVABLE_INS));
 196                         float_offset -= sizeof(sljit_f64);
 197                         break;
 198                 case SLJIT_ARG_TYPE_F64:
 199                         float_arg_index--;
 200                         if (float_arg_index == 4 && double_arg_count == 4) {
 201                                 /* The address is not doubleword aligned, so two instructions are required to store the double. */
 202                                 FAIL_IF(push_inst(compiler, STF | FD(float_arg_index) | S1(SLJIT_SP) | IMM((16 + 7) * sizeof(sljit_sw)), MOVABLE_INS));
 203                                 FAIL_IF(push_inst(compiler, STF | FD(float_arg_index) | (1 << 25) | S1(SLJIT_SP) | IMM((16 + 8) * sizeof(sljit_sw)), MOVABLE_INS));
 204                         }
 205                         else
 206                                 FAIL_IF(push_inst(compiler, STDF | FD(float_arg_index) | S1(SLJIT_SP) | IMM(float_offset), MOVABLE_INS));
 207                         float_offset -= sizeof(sljit_f64);
 208                         break;
 209                 default:
 210                         break;
 211                 }
 212
 213                 arg_types >>= SLJIT_DEF_SHIFT;
 214         }
 215
 216         float_offset = (16 + 6) * sizeof(sljit_sw);
 217
 218         while (types) {
 219                 switch (types & SLJIT_DEF_MASK) {
 220                 case SLJIT_ARG_TYPE_F32:
 221                         reg_index--;
 222                         if (reg_index < 8 + 6)
 223                                 FAIL_IF(push_inst(compiler, LDUW | DA(reg_index) | S1(SLJIT_SP) | IMM(float_offset), reg_index));
 224                         float_offset -= sizeof(sljit_f64);
 225                         break;
 226                 case SLJIT_ARG_TYPE_F64:
 227                         reg_index -= 2;
 228                         if (reg_index < 14) {
 229                                 if ((reg_index & 0x1) != 0) {
 230                                         FAIL_IF(push_inst(compiler, LDUW | DA(reg_index) | S1(SLJIT_SP) | IMM(float_offset), reg_index));
 231                                         if (reg_index < 8 + 6 - 1)
 232                                                 FAIL_IF(push_inst(compiler, LDUW | DA(reg_index + 1) | S1(SLJIT_SP) | IMM(float_offset + sizeof(sljit_sw)), reg_index + 1));
 233                                 }
 234                                 else
 235                                         FAIL_IF(push_inst(compiler, LDD | DA(reg_index) | S1(SLJIT_SP) | IMM(float_offset), reg_index));
 236                         }
 237                         float_offset -= sizeof(sljit_f64);
 238                         break;
 239                 default:
 240                         reg_index--;
 241                         word_reg_index--;
 242
 243                         if (reg_index != word_reg_index) {
 244                                 if (reg_index < 14)
 245                                         FAIL_IF(push_inst(compiler, OR | DA(reg_index) | S1(0) | S2A(word_reg_index), reg_index));
 246                                 else
 247                                         FAIL_IF(push_inst(compiler, STW | DA(word_reg_index) | S1(SLJIT_SP) | IMM(92), word_reg_index));
 248                         }
 249                         break;
 250                 }
 251
 252                 types >>= SLJIT_DEF_SHIFT;
 253         }
 254
 255         return SLJIT_SUCCESS;
 256 }
 257
 258 static SLJIT_INLINE sljit_s32 emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw init_value)
 259 {
 260         FAIL_IF(push_inst(compiler, SETHI | D(dst) | ((init_value >> 10) & 0x3fffff), DR(dst)));
 261         return push_inst(compiler, OR | D(dst) | S1(dst) | IMM_ARG | (init_value & 0x3ff), DR(dst));
 262 }
 263
 264 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
 265 {
 266         sljit_ins *inst = (sljit_ins *)addr;
 267         SLJIT_UNUSED_ARG(executable_offset);
 268
 269         SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 0);
 270         SLJIT_ASSERT(((inst[0] & 0xc1c00000) == 0x01000000) && ((inst[1] & 0xc1f82000) == 0x80102000));
 271         inst[0] = (inst[0] & 0xffc00000) | ((new_target >> 10) & 0x3fffff);
 272         inst[1] = (inst[1] & 0xfffffc00) | (new_target & 0x3ff);
 273         SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1);
 274         inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
 275         SLJIT_CACHE_FLUSH(inst, inst + 2);
 276 }
 277
 278 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
 279 {
 280         sljit_set_jump_addr(addr, new_constant, executable_offset);
 281 }