Annotation of embedaddon/pcre/sljit/sljitNativeSPARC_32.c, revision 1.1
1.1 ! misho 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_REG4), DR(TMP_REG4)));
! 114: return push_inst(compiler, SUB | SET_FLAGS | D(0) | S1(TMP_REG1) | S2(TMP_REG4), 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: }
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