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         case SLJIT_MOV_U32:
  46         case SLJIT_MOV_S32:
  47         case SLJIT_MOV_P:
  48                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
  49                 if (dst != src2)
  50                         return push_inst(compiler, OR | D(dst) | S1(0) | S2(src2), DR(dst));
  51                 return SLJIT_SUCCESS;
  52
  53         case SLJIT_MOV_U8:
  54         case SLJIT_MOV_S8:
  55                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
  56                 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
  57                         if (op == SLJIT_MOV_U8)
  58                                 return push_inst(compiler, AND | D(dst) | S1(src2) | IMM(0xff), DR(dst));
  59                         FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src2) | IMM(24), DR(dst)));
  60                         return push_inst(compiler, SRA | D(dst) | S1(dst) | IMM(24), DR(dst));
  61                 }
  62                 else if (dst != src2)
  63                         SLJIT_UNREACHABLE();
  64                 return SLJIT_SUCCESS;
  65
  66         case SLJIT_MOV_U16:
  67         case SLJIT_MOV_S16:
  68                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
  69                 if ((flags & (REG_DEST | REG2_SOURCE)) == (REG_DEST | REG2_SOURCE)) {
  70                         FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src2) | IMM(16), DR(dst)));
  71                         return push_inst(compiler, (op == SLJIT_MOV_S16 ? SRA : SRL) | D(dst) | S1(dst) | IMM(16), DR(dst));
  72                 }
  73                 else if (dst != src2)
  74                         SLJIT_UNREACHABLE();
  75                 return SLJIT_SUCCESS;
  76
  77         case SLJIT_NOT:
  78                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
  79                 return push_inst(compiler, XNOR | (flags & SET_FLAGS) | D(dst) | S1(0) | S2(src2), DR(dst) | (flags & SET_FLAGS));
  80
  81         case SLJIT_CLZ:
  82                 SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & SRC2_IMM));
  83                 FAIL_IF(push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(src2) | S2(0), SET_FLAGS));
  84                 FAIL_IF(push_inst(compiler, OR | D(TMP_REG1) | S1(0) | S2(src2), DR(TMP_REG1)));
  85                 FAIL_IF(push_inst(compiler, BICC | DA(0x1) | (7 & DISP_MASK), UNMOVABLE_INS));
  86                 FAIL_IF(push_inst(compiler, OR | D(dst) | S1(0) | IMM(32), UNMOVABLE_INS));
  87                 FAIL_IF(push_inst(compiler, OR | D(dst) | S1(0) | IMM(-1), DR(dst)));
  88
  89                 /* Loop. */
  90                 FAIL_IF(push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(TMP_REG1) | S2(0), SET_FLAGS));
  91                 FAIL_IF(push_inst(compiler, SLL | D(TMP_REG1) | S1(TMP_REG1) | IMM(1), DR(TMP_REG1)));
  92                 FAIL_IF(push_inst(compiler, BICC | DA(0xe) | (-2 & DISP_MASK), UNMOVABLE_INS));
  93                 return push_inst(compiler, ADD | D(dst) | S1(dst) | IMM(1), UNMOVABLE_INS);
  94
  95         case SLJIT_ADD:
  96                 compiler->status_flags_state = SLJIT_CURRENT_FLAGS_ADD_SUB;
  97                 return push_inst(compiler, ADD | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
  98
  99         case SLJIT_ADDC:
 100                 return push_inst(compiler, ADDC | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 101
 102         case SLJIT_SUB:
 103                 compiler->status_flags_state = SLJIT_CURRENT_FLAGS_ADD_SUB;
 104                 return push_inst(compiler, SUB | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 105
 106         case SLJIT_SUBC:
 107                 return push_inst(compiler, SUBC | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 108
 109         case SLJIT_MUL:
 110                 compiler->status_flags_state = 0;
 111                 FAIL_IF(push_inst(compiler, SMUL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 112                 if (!(flags & SET_FLAGS))
 113                         return SLJIT_SUCCESS;
 114                 FAIL_IF(push_inst(compiler, SRA | D(TMP_REG1) | S1(dst) | IMM(31), DR(TMP_REG1)));
 115                 FAIL_IF(push_inst(compiler, RDY | D(TMP_LINK), DR(TMP_LINK)));
 116                 return push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(TMP_REG1) | S2(TMP_LINK), MOVABLE_INS | SET_FLAGS);
 117
 118         case SLJIT_AND:
 119                 return push_inst(compiler, AND | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 120
 121         case SLJIT_OR:
 122                 return push_inst(compiler, OR | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 123
 124         case SLJIT_XOR:
 125                 return push_inst(compiler, XOR | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 126
 127         case SLJIT_SHL:
 128                 FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 129                 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
 130
 131         case SLJIT_LSHR:
 132                 FAIL_IF(push_inst(compiler, SRL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 133                 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
 134
 135         case SLJIT_ASHR:
 136                 FAIL_IF(push_inst(compiler, SRA | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 137                 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
 138         }
 139
 140         SLJIT_UNREACHABLE();
 141         return SLJIT_SUCCESS;
 142 }
 143
 144 static sljit_s32 call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src)
 145 {
 146         sljit_s32 reg_index = 8;
 147         sljit_s32 word_reg_index = 8;
 148         sljit_s32 float_arg_index = 1;
 149         sljit_s32 double_arg_count = 0;
 150         sljit_s32 float_offset = (16 + 6) * sizeof(sljit_sw);
 151         sljit_s32 types = 0;
 152         sljit_s32 reg = 0;
 153         sljit_s32 move_to_tmp2 = 0;
 154
 155         if (src)
 156                 reg = reg_map[*src & REG_MASK];
 157
 158         arg_types >>= SLJIT_DEF_SHIFT;
 159
 160         while (arg_types) {
 161                 types = (types << SLJIT_DEF_SHIFT) | (arg_types & SLJIT_DEF_MASK);
 162
 163                 switch (arg_types & SLJIT_DEF_MASK) {
 164                 case SLJIT_ARG_TYPE_F32:
 165                         float_arg_index++;
 166                         if (reg_index == reg)
 167                                 move_to_tmp2 = 1;
 168                         reg_index++;
 169                         break;
 170                 case SLJIT_ARG_TYPE_F64:
 171                         float_arg_index++;
 172                         double_arg_count++;
 173                         if (reg_index == reg || reg_index + 1 == reg)
 174                                 move_to_tmp2 = 1;
 175                         reg_index += 2;
 176                         break;
 177                 default:
 178                         if (reg_index != word_reg_index && reg_index < 14 && reg_index == reg)
 179                                 move_to_tmp2 = 1;
 180                         reg_index++;
 181                         word_reg_index++;
 182                         break;
 183                 }
 184
 185                 if (move_to_tmp2) {
 186                         move_to_tmp2 = 0;
 187                         if (reg < 14)
 188                                 FAIL_IF(push_inst(compiler, OR | D(TMP_REG1) | S1(0) | S2A(reg), DR(TMP_REG1)));
 189                         *src = TMP_REG1;
 190                 }
 191
 192                 arg_types >>= SLJIT_DEF_SHIFT;
 193         }
 194
 195         arg_types = types;
 196
 197         while (arg_types) {
 198                 switch (arg_types & SLJIT_DEF_MASK) {
 199                 case SLJIT_ARG_TYPE_F32:
 200                         float_arg_index--;
 201                         FAIL_IF(push_inst(compiler, STF | FD(float_arg_index) | S1(SLJIT_SP) | IMM(float_offset), MOVABLE_INS));
 202                         float_offset -= sizeof(sljit_f64);
 203                         break;
 204                 case SLJIT_ARG_TYPE_F64:
 205                         float_arg_index--;
 206                         if (float_arg_index == 4 && double_arg_count == 4) {
 207                                 FAIL_IF(push_inst(compiler, STF | FD(float_arg_index) | S1(SLJIT_SP) | IMM((16 + 7) * sizeof(sljit_sw)), MOVABLE_INS));
 208                                 FAIL_IF(push_inst(compiler, STF | FD(float_arg_index) | (1 << 25) | S1(SLJIT_SP) | IMM((16 + 8) * sizeof(sljit_sw)), MOVABLE_INS));
 209                         }
 210                         else
 211                                 FAIL_IF(push_inst(compiler, STDF | FD(float_arg_index) | S1(SLJIT_SP) | IMM(float_offset), MOVABLE_INS));
 212                         float_offset -= sizeof(sljit_f64);
 213                         break;
 214                 default:
 215                         break;
 216                 }
 217
 218                 arg_types >>= SLJIT_DEF_SHIFT;
 219         }
 220
 221         float_offset = (16 + 6) * sizeof(sljit_sw);
 222
 223         while (types) {
 224                 switch (types & SLJIT_DEF_MASK) {
 225                 case SLJIT_ARG_TYPE_F32:
 226                         reg_index--;
 227                         if (reg_index < 14)
 228                                 FAIL_IF(push_inst(compiler, LDUW | DA(reg_index) | S1(SLJIT_SP) | IMM(float_offset), reg_index));
 229                         float_offset -= sizeof(sljit_f64);
 230                         break;
 231                 case SLJIT_ARG_TYPE_F64:
 232                         reg_index -= 2;
 233                         if (reg_index < 14) {
 234                                 if ((reg_index & 0x1) != 0) {
 235                                         FAIL_IF(push_inst(compiler, LDUW | DA(reg_index) | S1(SLJIT_SP) | IMM(float_offset), reg_index));
 236                                         if (reg_index < 13)
 237                                                 FAIL_IF(push_inst(compiler, LDUW | DA(reg_index + 1) | S1(SLJIT_SP) | IMM(float_offset + sizeof(sljit_sw)), reg_index + 1));
 238                                 }
 239                                 else
 240                                         FAIL_IF(push_inst(compiler, LDD | DA(reg_index) | S1(SLJIT_SP) | IMM(float_offset), reg_index));
 241                         }
 242                         float_offset -= sizeof(sljit_f64);
 243                         break;
 244                 default:
 245                         reg_index--;
 246                         word_reg_index--;
 247
 248                         if (reg_index != word_reg_index) {
 249                                 if (reg_index < 14)
 250                                         FAIL_IF(push_inst(compiler, OR | DA(reg_index) | S1(0) | S2A(word_reg_index), reg_index));
 251                                 else
 252                                         FAIL_IF(push_inst(compiler, STW | DA(word_reg_index) | S1(SLJIT_SP) | IMM(92), word_reg_index));
 253                         }
 254                         break;
 255                 }
 256
 257                 types >>= SLJIT_DEF_SHIFT;
 258         }
 259
 260         return SLJIT_SUCCESS;
 261 }
 262
 263 static SLJIT_INLINE sljit_s32 emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw init_value)
 264 {
 265         FAIL_IF(push_inst(compiler, SETHI | D(dst) | ((init_value >> 10) & 0x3fffff), DR(dst)));
 266         return push_inst(compiler, OR | D(dst) | S1(dst) | IMM_ARG | (init_value & 0x3ff), DR(dst));
 267 }
 268
 269 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
 270 {
 271         sljit_ins *inst = (sljit_ins *)addr;
 272         SLJIT_UNUSED_ARG(executable_offset);
 273
 274         SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 0);
 275         SLJIT_ASSERT(((inst[0] & 0xc1c00000) == 0x01000000) && ((inst[1] & 0xc1f82000) == 0x80102000));
 276         inst[0] = (inst[0] & 0xffc00000) | ((new_target >> 10) & 0x3fffff);
 277         inst[1] = (inst[1] & 0xfffffc00) | (new_target & 0x3ff);
 278         SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1);
 279         inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
 280         SLJIT_CACHE_FLUSH(inst, inst + 2);
 281 }
 282
 283 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
 284 {
 285         sljit_set_jump_addr(addr, new_constant, executable_offset);
 286 }