ext/pcre/pcrelib/sljit/sljitNativeSPARC

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This source file includes following definitions.
load_immediate
emit_single_op
emit_const
sljit_set_jump_addr
sljit_set_const
   1 /*
   2  *    Stack-less Just-In-Time compiler
   3  *
   4  *    Copyright 2009-2012 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_si load_immediate(struct sljit_compiler *compiler, sljit_si 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_si emit_single_op(struct sljit_compiler *compiler, sljit_si op, sljit_si flags,
  39         sljit_si dst, sljit_si 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_UI:
  46         case SLJIT_MOV_SI:
  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_UB:
  54         case SLJIT_MOV_SB:
  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_UB)
  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_ASSERT_STOP();
  64                 return SLJIT_SUCCESS;
  65 
  66         case SLJIT_MOV_UH:
  67         case SLJIT_MOV_SH:
  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_SH ? SRA : SRL) | D(dst) | S1(dst) | IMM(16), DR(dst));
  72                 }
  73                 else if (dst != src2)
  74                         SLJIT_ASSERT_STOP();
  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                 /* sparc 32 does not support SLJIT_KEEP_FLAGS. Not sure I can fix this. */
  84                 FAIL_IF(push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(src2) | S2(0), SET_FLAGS));
  85                 FAIL_IF(push_inst(compiler, OR | D(TMP_REG1) | S1(0) | S2(src2), DR(TMP_REG1)));
  86                 FAIL_IF(push_inst(compiler, BICC | DA(0x1) | (7 & DISP_MASK), UNMOVABLE_INS));
  87                 FAIL_IF(push_inst(compiler, OR | (flags & SET_FLAGS) | D(dst) | S1(0) | IMM(32), UNMOVABLE_INS | (flags & SET_FLAGS)));
  88                 FAIL_IF(push_inst(compiler, OR | D(dst) | S1(0) | IMM(-1), DR(dst)));
  89 
  90                 /* Loop. */
  91                 FAIL_IF(push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(TMP_REG1) | S2(0), SET_FLAGS));
  92                 FAIL_IF(push_inst(compiler, SLL | D(TMP_REG1) | S1(TMP_REG1) | IMM(1), DR(TMP_REG1)));
  93                 FAIL_IF(push_inst(compiler, BICC | DA(0xe) | (-2 & DISP_MASK), UNMOVABLE_INS));
  94                 return push_inst(compiler, ADD | (flags & SET_FLAGS) | D(dst) | S1(dst) | IMM(1), UNMOVABLE_INS | (flags & SET_FLAGS));
  95 
  96         case SLJIT_ADD:
  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                 return push_inst(compiler, SUB | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 104 
 105         case SLJIT_SUBC:
 106                 return push_inst(compiler, SUBC | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 107 
 108         case SLJIT_MUL:
 109                 FAIL_IF(push_inst(compiler, SMUL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 110                 if (!(flags & SET_FLAGS))
 111                         return SLJIT_SUCCESS;
 112                 FAIL_IF(push_inst(compiler, SRA | D(TMP_REG1) | S1(dst) | IMM(31), DR(TMP_REG1)));
 113                 FAIL_IF(push_inst(compiler, RDY | D(TMP_LINK), DR(TMP_LINK)));
 114                 return push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(TMP_REG1) | S2(TMP_LINK), MOVABLE_INS | SET_FLAGS);
 115 
 116         case SLJIT_AND:
 117                 return push_inst(compiler, AND | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 118 
 119         case SLJIT_OR:
 120                 return push_inst(compiler, OR | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 121 
 122         case SLJIT_XOR:
 123                 return push_inst(compiler, XOR | (flags & SET_FLAGS) | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst) | (flags & SET_FLAGS));
 124 
 125         case SLJIT_SHL:
 126                 FAIL_IF(push_inst(compiler, SLL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 127                 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
 128 
 129         case SLJIT_LSHR:
 130                 FAIL_IF(push_inst(compiler, SRL | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 131                 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
 132 
 133         case SLJIT_ASHR:
 134                 FAIL_IF(push_inst(compiler, SRA | D(dst) | S1(src1) | ARG2(flags, src2), DR(dst)));
 135                 return !(flags & SET_FLAGS) ? SLJIT_SUCCESS : push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(dst) | S2(0), SET_FLAGS);
 136         }
 137 
 138         SLJIT_ASSERT_STOP();
 139         return SLJIT_SUCCESS;
 140 }
 141 
 142 static SLJIT_INLINE sljit_si emit_const(struct sljit_compiler *compiler, sljit_si dst, sljit_sw init_value)
 143 {
 144         FAIL_IF(push_inst(compiler, SETHI | D(dst) | ((init_value >> 10) & 0x3fffff), DR(dst)));
 145         return push_inst(compiler, OR | D(dst) | S1(dst) | IMM_ARG | (init_value & 0x3ff), DR(dst));
 146 }
 147 
 148 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
 149 {
 150         sljit_ins *inst = (sljit_ins*)addr;
 151 
 152         inst[0] = (inst[0] & 0xffc00000) | ((new_addr >> 10) & 0x3fffff);
 153         inst[1] = (inst[1] & 0xfffffc00) | (new_addr & 0x3ff);
 154         SLJIT_CACHE_FLUSH(inst, inst + 2);
 155 }
 156 
 157 SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant)
 158 {
 159         sljit_ins *inst = (sljit_ins*)addr;
 160 
 161         inst[0] = (inst[0] & 0xffc00000) | ((new_constant >> 10) & 0x3fffff);
 162         inst[1] = (inst[1] & 0xfffffc00) | (new_constant & 0x3ff);
 163         SLJIT_CACHE_FLUSH(inst, inst + 2);
 164 }
/* [<][>][^][v][top][bottom][index][help] */
root/ext/pcre/pcrelib/sljit/sljitNativeSPARC_32.c

DEFINITIONS
