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/*
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* Stack-less Just-In-Time compiler
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*
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* Copyright 2009-2010 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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SLJIT_API_FUNC_ATTRIBUTE SLJIT_CONST char* sljit_get_platform_name()
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{
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return "arm-thumb2";
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}
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/* Last register + 1. */
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#define TMP_REG1 (SLJIT_NO_REGISTERS + 1)
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#define TMP_REG2 (SLJIT_NO_REGISTERS + 2)
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#define TMP_REG3 (SLJIT_NO_REGISTERS + 3)
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#define TMP_PC (SLJIT_NO_REGISTERS + 4)
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#define TMP_FREG1 (SLJIT_FLOAT_REG4 + 1)
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#define TMP_FREG2 (SLJIT_FLOAT_REG4 + 2)
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/* See sljit_emit_enter if you want to change them. */
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static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 5] = {
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0, 0, 1, 2, 12, 5, 6, 7, 8, 10, 11, 13, 3, 4, 14, 15
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};
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#define COPY_BITS(src, from, to, bits) \
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((from >= to ? (src >> (from - to)) : (src << (to - from))) & (((1 << bits) - 1) << to))
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/* Thumb16 encodings. */
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#define RD3(rd) (reg_map[rd])
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#define RN3(rn) (reg_map[rn] << 3)
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#define RM3(rm) (reg_map[rm] << 6)
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#define RDN3(rdn) (reg_map[rdn] << 8)
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#define IMM3(imm) (imm << 6)
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#define IMM8(imm) (imm)
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/* Thumb16 helpers. */
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#define SET_REGS44(rd, rn) \
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((reg_map[rn] << 3) | (reg_map[rd] & 0x7) | ((reg_map[rd] & 0x8) << 4))
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#define IS_2_LO_REGS(reg1, reg2) \
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(reg_map[reg1] <= 7 && reg_map[reg2] <= 7)
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#define IS_3_LO_REGS(reg1, reg2, reg3) \
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(reg_map[reg1] <= 7 && reg_map[reg2] <= 7 && reg_map[reg3] <= 7)
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/* Thumb32 encodings. */
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#define RD4(rd) (reg_map[rd] << 8)
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#define RN4(rn) (reg_map[rn] << 16)
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#define RM4(rm) (reg_map[rm])
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#define RT4(rt) (reg_map[rt] << 12)
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#define DD4(dd) ((dd) << 12)
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#define DN4(dn) ((dn) << 16)
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#define DM4(dm) (dm)
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#define IMM5(imm) \
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(COPY_BITS(imm, 2, 12, 3) | ((imm & 0x3) << 6))
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#define IMM12(imm) \
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(COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff))
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typedef sljit_ui sljit_ins;
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/* --------------------------------------------------------------------- */
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/* Instrucion forms */
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/* --------------------------------------------------------------------- */
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/* dot '.' changed to _
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I immediate form (possibly followed by number of immediate bits). */
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#define ADCI 0xf1400000
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#define ADCS 0x4140
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#define ADC_W 0xeb400000
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#define ADD 0x4400
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#define ADDS 0x1800
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#define ADDSI3 0x1c00
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#define ADDSI8 0x3000
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#define ADD_W 0xeb000000
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#define ADDWI 0xf2000000
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#define ADD_SP 0xb000
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#define ADD_W 0xeb000000
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#define ADD_WI 0xf1000000
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#define ANDI 0xf0000000
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#define ANDS 0x4000
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#define AND_W 0xea000000
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#define ASRS 0x4100
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#define ASRSI 0x1000
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#define ASR_W 0xfa40f000
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#define ASR_WI 0xea4f0020
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#define BICI 0xf0200000
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#define BKPT 0xbe00
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#define BLX 0x4780
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#define BX 0x4700
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#define CLZ 0xfab0f080
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#define CMPI 0x2800
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#define CMP_W 0xebb00f00
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#define EORI 0xf0800000
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#define EORS 0x4040
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#define EOR_W 0xea800000
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#define IT 0xbf00
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#define LSLS 0x4080
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#define LSLSI 0x0000
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#define LSL_W 0xfa00f000
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#define LSL_WI 0xea4f0000
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#define LSRS 0x40c0
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#define LSRSI 0x0800
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#define LSR_W 0xfa20f000
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#define LSR_WI 0xea4f0010
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#define MOV 0x4600
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#define MOVSI 0x2000
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#define MOVT 0xf2c00000
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#define MOVW 0xf2400000
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#define MOV_WI 0xf04f0000
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#define MUL 0xfb00f000
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#define MVNS 0x43c0
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#define MVN_W 0xea6f0000
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#define MVN_WI 0xf06f0000
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#define NOP 0xbf00
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#define ORNI 0xf0600000
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#define ORRI 0xf0400000
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#define ORRS 0x4300
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#define ORR_W 0xea400000
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#define POP 0xbd00
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#define POP_W 0xe8bd0000
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#define PUSH 0xb500
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#define PUSH_W 0xe92d0000
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#define RSB_WI 0xf1c00000
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#define RSBSI 0x4240
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#define SBCI 0xf1600000
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#define SBCS 0x4180
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#define SBC_W 0xeb600000
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#define SMULL 0xfb800000
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#define STR_SP 0x9000
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#define SUBS 0x1a00
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#define SUBSI3 0x1e00
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#define SUBSI8 0x3800
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#define SUB_W 0xeba00000
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#define SUBWI 0xf2a00000
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#define SUB_SP 0xb080
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#define SUB_WI 0xf1a00000
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#define SXTB 0xb240
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#define SXTB_W 0xfa4ff080
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#define SXTH 0xb200
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#define SXTH_W 0xfa0ff080
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#define TST 0x4200
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#define UXTB 0xb2c0
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#define UXTB_W 0xfa5ff080
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#define UXTH 0xb280
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#define UXTH_W 0xfa1ff080
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#define VABS_F64 0xeeb00bc0
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#define VADD_F64 0xee300b00
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#define VCMP_F64 0xeeb40b40
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#define VDIV_F64 0xee800b00
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#define VMOV_F64 0xeeb00b40
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#define VMRS 0xeef1fa10
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#define VMUL_F64 0xee200b00
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#define VNEG_F64 0xeeb10b40
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#define VSTR 0xed000b00
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#define VSUB_F64 0xee300b40
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static int push_inst16(struct sljit_compiler *compiler, sljit_ins inst)
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{
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sljit_uh *ptr;
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SLJIT_ASSERT(!(inst & 0xffff0000));
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ptr = (sljit_uh*)ensure_buf(compiler, sizeof(sljit_uh));
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FAIL_IF(!ptr);
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*ptr = inst;
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compiler->size++;
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return SLJIT_SUCCESS;
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}
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static int push_inst32(struct sljit_compiler *compiler, sljit_ins inst)
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{
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sljit_uh *ptr = (sljit_uh*)ensure_buf(compiler, sizeof(sljit_ins));
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FAIL_IF(!ptr);
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*ptr++ = inst >> 16;
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*ptr = inst;
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compiler->size += 2;
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return SLJIT_SUCCESS;
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}
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static SLJIT_INLINE int emit_imm32_const(struct sljit_compiler *compiler, int dst, sljit_uw imm)
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{
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FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) |
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COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
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return push_inst32(compiler, MOVT | RD4(dst) |
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COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
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}
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static SLJIT_INLINE void modify_imm32_const(sljit_uh* inst, sljit_uw new_imm)
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{
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int dst = inst[1] & 0x0f00;
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SLJIT_ASSERT(((inst[0] & 0xfbf0) == (MOVW >> 16)) && ((inst[2] & 0xfbf0) == (MOVT >> 16)) && dst == (inst[3] & 0x0f00));
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inst[0] = (MOVW >> 16) | COPY_BITS(new_imm, 12, 0, 4) | COPY_BITS(new_imm, 11, 10, 1);
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inst[1] = dst | COPY_BITS(new_imm, 8, 12, 3) | (new_imm & 0xff);
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inst[2] = (MOVT >> 16) | COPY_BITS(new_imm, 12 + 16, 0, 4) | COPY_BITS(new_imm, 11 + 16, 10, 1);
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inst[3] = dst | COPY_BITS(new_imm, 8 + 16, 12, 3) | ((new_imm & 0xff0000) >> 16);
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}
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static SLJIT_INLINE int detect_jump_type(struct sljit_jump *jump, sljit_uh *code_ptr, sljit_uh *code)
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{
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sljit_w diff;
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if (jump->flags & SLJIT_REWRITABLE_JUMP)
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return 0;
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if (jump->flags & JUMP_ADDR) {
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/* Branch to ARM code is not optimized yet. */
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if (!(jump->u.target & 0x1))
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return 0;
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diff = ((sljit_w)jump->u.target - (sljit_w)(code_ptr + 2)) >> 1;
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}
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else {
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SLJIT_ASSERT(jump->flags & JUMP_LABEL);
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diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)(code_ptr + 2)) >> 1;
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}
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if (jump->flags & IS_CONDITIONAL) {
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SLJIT_ASSERT(!(jump->flags & IS_BL));
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if (diff <= 127 && diff >= -128) {
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jump->flags |= B_TYPE1;
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return 5;
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}
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if (diff <= 524287 && diff >= -524288) {
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jump->flags |= B_TYPE2;
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return 4;
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}
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/* +1 comes from the prefix IT instruction. */
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diff--;
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if (diff <= 8388607 && diff >= -8388608) {
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jump->flags |= B_TYPE3;
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return 3;
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}
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}
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else if (jump->flags & IS_BL) {
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if (diff <= 8388607 && diff >= -8388608) {
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jump->flags |= BL_TYPE6;
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return 3;
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}
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}
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else {
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if (diff <= 1023 && diff >= -1024) {
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jump->flags |= B_TYPE4;
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return 4;
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}
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if (diff <= 8388607 && diff >= -8388608) {
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jump->flags |= B_TYPE5;
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return 3;
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}
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}
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return 0;
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}
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static SLJIT_INLINE void inline_set_jump_addr(sljit_uw addr, sljit_uw new_addr, int flush)
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{
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sljit_uh* inst = (sljit_uh*)addr;
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modify_imm32_const(inst, new_addr);
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if (flush) {
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SLJIT_CACHE_FLUSH(inst, inst + 3);
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}
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| 278 |
}
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| 279 |
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static SLJIT_INLINE void set_jump_instruction(struct sljit_jump *jump)
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| 281 |
{
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| 282 |
int type = (jump->flags >> 4) & 0xf;
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| 283 |
sljit_w diff;
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sljit_uh *jump_inst;
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int s, j1, j2;
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if (SLJIT_UNLIKELY(type == 0)) {
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inline_set_jump_addr(jump->addr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0);
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return;
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}
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| 291 |
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| 292 |
if (jump->flags & JUMP_ADDR) {
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SLJIT_ASSERT(jump->u.target & 0x1);
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diff = ((sljit_w)jump->u.target - (sljit_w)(jump->addr + 4)) >> 1;
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}
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else
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diff = ((sljit_w)(jump->u.label->addr) - (sljit_w)(jump->addr + 4)) >> 1;
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| 298 |
jump_inst = (sljit_uh*)jump->addr;
|
| 299 |
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| 300 |
switch (type) {
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| 301 |
case 1:
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| 302 |
/* Encoding T1 of 'B' instruction */
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| 303 |
SLJIT_ASSERT(diff <= 127 && diff >= -128 && (jump->flags & IS_CONDITIONAL));
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| 304 |
jump_inst[0] = 0xd000 | (jump->flags & 0xf00) | (diff & 0xff);
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| 305 |
return;
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| 306 |
case 2:
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| 307 |
/* Encoding T3 of 'B' instruction */
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| 308 |
SLJIT_ASSERT(diff <= 524287 && diff >= -524288 && (jump->flags & IS_CONDITIONAL));
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| 309 |
jump_inst[0] = 0xf000 | COPY_BITS(jump->flags, 8, 6, 4) | COPY_BITS(diff, 11, 0, 6) | COPY_BITS(diff, 19, 10, 1);
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| 310 |
jump_inst[1] = 0x8000 | COPY_BITS(diff, 17, 13, 1) | COPY_BITS(diff, 18, 11, 1) | (diff & 0x7ff);
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| 311 |
return;
|
| 312 |
case 3:
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| 313 |
SLJIT_ASSERT(jump->flags & IS_CONDITIONAL);
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| 314 |
*jump_inst++ = IT | ((jump->flags >> 4) & 0xf0) | 0x8;
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| 315 |
diff--;
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| 316 |
type = 5;
|
| 317 |
break;
|
| 318 |
case 4:
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| 319 |
/* Encoding T2 of 'B' instruction */
|
| 320 |
SLJIT_ASSERT(diff <= 1023 && diff >= -1024 && !(jump->flags & IS_CONDITIONAL));
|
| 321 |
jump_inst[0] = 0xe000 | (diff & 0x7ff);
|
| 322 |
return;
|
| 323 |
}
|
| 324 |
|
| 325 |
SLJIT_ASSERT(diff <= 8388607 && diff >= -8388608);
|
| 326 |
|
| 327 |
/* Really complex instruction form for branches. */
|
| 328 |
s = (diff >> 23) & 0x1;
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| 329 |
j1 = (~(diff >> 21) ^ s) & 0x1;
|
| 330 |
j2 = (~(diff >> 22) ^ s) & 0x1;
|
| 331 |
jump_inst[0] = 0xf000 | (s << 10) | COPY_BITS(diff, 11, 0, 10);
|
| 332 |
jump_inst[1] = (j1 << 13) | (j2 << 11) | (diff & 0x7ff);
|
| 333 |
|
| 334 |
/* The others have a common form. */
|
| 335 |
if (type == 5) /* Encoding T4 of 'B' instruction */
|
| 336 |
jump_inst[1] |= 0x9000;
|
| 337 |
else if (type == 6) /* Encoding T1 of 'BL' instruction */
|
| 338 |
jump_inst[1] |= 0xd000;
|
| 339 |
else
|
| 340 |
SLJIT_ASSERT_STOP();
|
| 341 |
}
|
| 342 |
|
| 343 |
SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
|
| 344 |
{
|
| 345 |
struct sljit_memory_fragment *buf;
|
| 346 |
sljit_uh *code;
|
| 347 |
sljit_uh *code_ptr;
|
| 348 |
sljit_uh *buf_ptr;
|
| 349 |
sljit_uh *buf_end;
|
| 350 |
sljit_uw half_count;
|
| 351 |
|
| 352 |
struct sljit_label *label;
|
| 353 |
struct sljit_jump *jump;
|
| 354 |
struct sljit_const *const_;
|
| 355 |
|
| 356 |
CHECK_ERROR_PTR();
|
| 357 |
check_sljit_generate_code(compiler);
|
| 358 |
reverse_buf(compiler);
|
| 359 |
|
| 360 |
code = (sljit_uh*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_uh));
|
| 361 |
PTR_FAIL_WITH_EXEC_IF(code);
|
| 362 |
buf = compiler->buf;
|
| 363 |
|
| 364 |
code_ptr = code;
|
| 365 |
half_count = 0;
|
| 366 |
label = compiler->labels;
|
| 367 |
jump = compiler->jumps;
|
| 368 |
const_ = compiler->consts;
|
| 369 |
|
| 370 |
do {
|
| 371 |
buf_ptr = (sljit_uh*)buf->memory;
|
| 372 |
buf_end = buf_ptr + (buf->used_size >> 1);
|
| 373 |
do {
|
| 374 |
*code_ptr = *buf_ptr++;
|
| 375 |
/* These structures are ordered by their address. */
|
| 376 |
SLJIT_ASSERT(!label || label->size >= half_count);
|
| 377 |
SLJIT_ASSERT(!jump || jump->addr >= half_count);
|
| 378 |
SLJIT_ASSERT(!const_ || const_->addr >= half_count);
|
| 379 |
if (label && label->size == half_count) {
|
| 380 |
label->addr = ((sljit_uw)code_ptr) | 0x1;
|
| 381 |
label->size = code_ptr - code;
|
| 382 |
label = label->next;
|
| 383 |
}
|
| 384 |
if (jump && jump->addr == half_count) {
|
| 385 |
jump->addr = (sljit_uw)code_ptr - ((jump->flags & IS_CONDITIONAL) ? 10 : 8);
|
| 386 |
code_ptr -= detect_jump_type(jump, code_ptr, code);
|
| 387 |
jump = jump->next;
|
| 388 |
}
|
| 389 |
if (const_ && const_->addr == half_count) {
|
| 390 |
const_->addr = (sljit_uw)code_ptr;
|
| 391 |
const_ = const_->next;
|
| 392 |
}
|
| 393 |
code_ptr ++;
|
| 394 |
half_count ++;
|
| 395 |
} while (buf_ptr < buf_end);
|
| 396 |
|
| 397 |
buf = buf->next;
|
| 398 |
} while (buf);
|
| 399 |
|
| 400 |
if (label && label->size == half_count) {
|
| 401 |
label->addr = ((sljit_uw)code_ptr) | 0x1;
|
| 402 |
label->size = code_ptr - code;
|
| 403 |
label = label->next;
|
| 404 |
}
|
| 405 |
|
| 406 |
SLJIT_ASSERT(!label);
|
| 407 |
SLJIT_ASSERT(!jump);
|
| 408 |
SLJIT_ASSERT(!const_);
|
| 409 |
SLJIT_ASSERT(code_ptr - code <= (int)compiler->size);
|
| 410 |
|
| 411 |
jump = compiler->jumps;
|
| 412 |
while (jump) {
|
| 413 |
set_jump_instruction(jump);
|
| 414 |
jump = jump->next;
|
| 415 |
}
|
| 416 |
|
| 417 |
SLJIT_CACHE_FLUSH(code, code_ptr);
|
| 418 |
compiler->error = SLJIT_ERR_COMPILED;
|
| 419 |
compiler->executable_size = compiler->size * sizeof(sljit_uh);
|
| 420 |
/* Set thumb mode flag. */
|
| 421 |
return (void*)((sljit_uw)code | 0x1);
|
| 422 |
}
|
| 423 |
|
| 424 |
#define INVALID_IMM 0x80000000
|
| 425 |
static sljit_uw get_imm(sljit_uw imm)
|
| 426 |
{
|
| 427 |
/* Thumb immediate form. */
|
| 428 |
int counter;
|
| 429 |
|
| 430 |
if (imm <= 0xff)
|
| 431 |
return imm;
|
| 432 |
|
| 433 |
if ((imm & 0xffff) == (imm >> 16)) {
|
| 434 |
/* Some special cases. */
|
| 435 |
if (!(imm & 0xff00))
|
| 436 |
return (1 << 12) | (imm & 0xff);
|
| 437 |
if (!(imm & 0xff))
|
| 438 |
return (2 << 12) | ((imm >> 8) & 0xff);
|
| 439 |
if ((imm & 0xff00) == ((imm & 0xff) << 8))
|
| 440 |
return (3 << 12) | (imm & 0xff);
|
| 441 |
}
|
| 442 |
|
| 443 |
/* Assembly optimization: count leading zeroes? */
|
| 444 |
counter = 8;
|
| 445 |
if (!(imm & 0xffff0000)) {
|
| 446 |
counter += 16;
|
| 447 |
imm <<= 16;
|
| 448 |
}
|
| 449 |
if (!(imm & 0xff000000)) {
|
| 450 |
counter += 8;
|
| 451 |
imm <<= 8;
|
| 452 |
}
|
| 453 |
if (!(imm & 0xf0000000)) {
|
| 454 |
counter += 4;
|
| 455 |
imm <<= 4;
|
| 456 |
}
|
| 457 |
if (!(imm & 0xc0000000)) {
|
| 458 |
counter += 2;
|
| 459 |
imm <<= 2;
|
| 460 |
}
|
| 461 |
if (!(imm & 0x80000000)) {
|
| 462 |
counter += 1;
|
| 463 |
imm <<= 1;
|
| 464 |
}
|
| 465 |
/* Since imm >= 128, this must be true. */
|
| 466 |
SLJIT_ASSERT(counter <= 31);
|
| 467 |
|
| 468 |
if (imm & 0x00ffffff)
|
| 469 |
return INVALID_IMM; /* Cannot be encoded. */
|
| 470 |
|
| 471 |
return ((imm >> 24) & 0x7f) | COPY_BITS(counter, 4, 26, 1) | COPY_BITS(counter, 1, 12, 3) | COPY_BITS(counter, 0, 7, 1);
|
| 472 |
}
|
| 473 |
|
| 474 |
static int load_immediate(struct sljit_compiler *compiler, int dst, sljit_uw imm)
|
| 475 |
{
|
| 476 |
sljit_uw tmp;
|
| 477 |
|
| 478 |
if (imm >= 0x10000) {
|
| 479 |
tmp = get_imm(imm);
|
| 480 |
if (tmp != INVALID_IMM)
|
| 481 |
return push_inst32(compiler, MOV_WI | RD4(dst) | tmp);
|
| 482 |
tmp = get_imm(~imm);
|
| 483 |
if (tmp != INVALID_IMM)
|
| 484 |
return push_inst32(compiler, MVN_WI | RD4(dst) | tmp);
|
| 485 |
}
|
| 486 |
|
| 487 |
/* set low 16 bits, set hi 16 bits to 0. */
|
| 488 |
FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) |
|
| 489 |
COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
|
| 490 |
|
| 491 |
/* set hi 16 bit if needed. */
|
| 492 |
if (imm >= 0x10000)
|
| 493 |
return push_inst32(compiler, MOVT | RD4(dst) |
|
| 494 |
COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
|
| 495 |
return SLJIT_SUCCESS;
|
| 496 |
}
|
| 497 |
|
| 498 |
#define ARG1_IMM 0x0010000
|
| 499 |
#define ARG2_IMM 0x0020000
|
| 500 |
#define KEEP_FLAGS 0x0040000
|
| 501 |
#define SET_MULOV 0x0080000
|
| 502 |
/* SET_FLAGS must be 0x100000 as it is also the value of S bit (can be used for optimization). */
|
| 503 |
#define SET_FLAGS 0x0100000
|
| 504 |
#define UNUSED_RETURN 0x0200000
|
| 505 |
#define SLOW_DEST 0x0400000
|
| 506 |
#define SLOW_SRC1 0x0800000
|
| 507 |
#define SLOW_SRC2 0x1000000
|
| 508 |
|
| 509 |
static int emit_op_imm(struct sljit_compiler *compiler, int flags, int dst, sljit_uw arg1, sljit_uw arg2)
|
| 510 |
{
|
| 511 |
/* dst must be register, TMP_REG1
|
| 512 |
arg1 must be register, TMP_REG1, imm
|
| 513 |
arg2 must be register, TMP_REG2, imm */
|
| 514 |
int reg;
|
| 515 |
sljit_uw imm;
|
| 516 |
|
| 517 |
if (SLJIT_UNLIKELY((flags & (ARG1_IMM | ARG2_IMM)) == (ARG1_IMM | ARG2_IMM))) {
|
| 518 |
/* Both are immediates. */
|
| 519 |
flags &= ~ARG1_IMM;
|
| 520 |
FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
|
| 521 |
arg1 = TMP_REG1;
|
| 522 |
}
|
| 523 |
|
| 524 |
if (flags & (ARG1_IMM | ARG2_IMM)) {
|
| 525 |
reg = (flags & ARG2_IMM) ? arg1 : arg2;
|
| 526 |
imm = (flags & ARG2_IMM) ? arg2 : arg1;
|
| 527 |
|
| 528 |
switch (flags & 0xffff) {
|
| 529 |
case SLJIT_MOV:
|
| 530 |
SLJIT_ASSERT(!(flags & SET_FLAGS) && (flags & ARG2_IMM) && arg1 == TMP_REG1);
|
| 531 |
return load_immediate(compiler, dst, imm);
|
| 532 |
case SLJIT_NOT:
|
| 533 |
if (!(flags & SET_FLAGS))
|
| 534 |
return load_immediate(compiler, dst, ~imm);
|
| 535 |
/* Since the flags should be set, we just fallback to the register mode.
|
| 536 |
Although I could do some clever things here, "NOT IMM" does not worth the efforts. */
|
| 537 |
break;
|
| 538 |
case SLJIT_CLZ:
|
| 539 |
/* No form with immediate operand. */
|
| 540 |
break;
|
| 541 |
case SLJIT_ADD:
|
| 542 |
if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(reg, dst)) {
|
| 543 |
if (imm <= 0x7)
|
| 544 |
return push_inst16(compiler, ADDSI3 | IMM3(imm) | RD3(dst) | RN3(reg));
|
| 545 |
if (reg == dst && imm <= 0xff)
|
| 546 |
return push_inst16(compiler, ADDSI8 | IMM8(imm) | RDN3(dst));
|
| 547 |
}
|
| 548 |
if (imm <= 0xfff && !(flags & SET_FLAGS))
|
| 549 |
return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(imm));
|
| 550 |
imm = get_imm(imm);
|
| 551 |
if (imm != INVALID_IMM)
|
| 552 |
return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
|
| 553 |
break;
|
| 554 |
case SLJIT_ADDC:
|
| 555 |
imm = get_imm(imm);
|
| 556 |
if (imm != INVALID_IMM)
|
| 557 |
return push_inst32(compiler, ADCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
|
| 558 |
break;
|
| 559 |
case SLJIT_SUB:
|
| 560 |
if (flags & ARG2_IMM) {
|
| 561 |
if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(reg, dst)) {
|
| 562 |
if (imm <= 0x7)
|
| 563 |
return push_inst16(compiler, SUBSI3 | IMM3(imm) | RD3(dst) | RN3(reg));
|
| 564 |
if (imm <= 0xff) {
|
| 565 |
if (reg == dst)
|
| 566 |
return push_inst16(compiler, SUBSI8 | IMM8(imm) | RDN3(dst));
|
| 567 |
if (flags & UNUSED_RETURN)
|
| 568 |
return push_inst16(compiler, CMPI | IMM8(imm) | RDN3(reg));
|
| 569 |
}
|
| 570 |
}
|
| 571 |
if (imm <= 0xfff && !(flags & SET_FLAGS))
|
| 572 |
return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(imm));
|
| 573 |
imm = get_imm(imm);
|
| 574 |
if (imm != INVALID_IMM)
|
| 575 |
return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
|
| 576 |
}
|
| 577 |
else {
|
| 578 |
if (!(flags & KEEP_FLAGS) && imm == 0 && IS_2_LO_REGS(reg, dst))
|
| 579 |
return push_inst16(compiler, RSBSI | RD3(dst) | RN3(reg));
|
| 580 |
imm = get_imm(imm);
|
| 581 |
if (imm != INVALID_IMM)
|
| 582 |
return push_inst32(compiler, RSB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
|
| 583 |
}
|
| 584 |
break;
|
| 585 |
case SLJIT_SUBC:
|
| 586 |
if (flags & ARG2_IMM) {
|
| 587 |
imm = get_imm(imm);
|
| 588 |
if (imm != INVALID_IMM)
|
| 589 |
return push_inst32(compiler, SBCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
|
| 590 |
}
|
| 591 |
break;
|
| 592 |
case SLJIT_MUL:
|
| 593 |
/* No form with immediate operand. */
|
| 594 |
break;
|
| 595 |
case SLJIT_AND:
|
| 596 |
imm = get_imm(imm);
|
| 597 |
if (imm != INVALID_IMM)
|
| 598 |
return push_inst32(compiler, ANDI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
|
| 599 |
imm = get_imm(~((flags & ARG2_IMM) ? arg2 : arg1));
|
| 600 |
if (imm != INVALID_IMM)
|
| 601 |
return push_inst32(compiler, BICI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
|
| 602 |
break;
|
| 603 |
case SLJIT_OR:
|
| 604 |
imm = get_imm(imm);
|
| 605 |
if (imm != INVALID_IMM)
|
| 606 |
return push_inst32(compiler, ORRI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
|
| 607 |
imm = get_imm(~((flags & ARG2_IMM) ? arg2 : arg1));
|
| 608 |
if (imm != INVALID_IMM)
|
| 609 |
return push_inst32(compiler, ORNI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
|
| 610 |
break;
|
| 611 |
case SLJIT_XOR:
|
| 612 |
imm = get_imm(imm);
|
| 613 |
if (imm != INVALID_IMM)
|
| 614 |
return push_inst32(compiler, EORI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
|
| 615 |
break;
|
| 616 |
case SLJIT_SHL:
|
| 617 |
if (flags & ARG2_IMM) {
|
| 618 |
imm &= 0x1f;
|
| 619 |
if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
|
| 620 |
return push_inst16(compiler, LSLSI | RD3(dst) | RN3(reg) | (imm << 6));
|
| 621 |
return push_inst32(compiler, LSL_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
|
| 622 |
}
|
| 623 |
break;
|
| 624 |
case SLJIT_LSHR:
|
| 625 |
if (flags & ARG2_IMM) {
|
| 626 |
imm &= 0x1f;
|
| 627 |
if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
|
| 628 |
return push_inst16(compiler, LSRSI | RD3(dst) | RN3(reg) | (imm << 6));
|
| 629 |
return push_inst32(compiler, LSR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
|
| 630 |
}
|
| 631 |
break;
|
| 632 |
case SLJIT_ASHR:
|
| 633 |
if (flags & ARG2_IMM) {
|
| 634 |
imm &= 0x1f;
|
| 635 |
if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, reg))
|
| 636 |
return push_inst16(compiler, ASRSI | RD3(dst) | RN3(reg) | (imm << 6));
|
| 637 |
return push_inst32(compiler, ASR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
|
| 638 |
}
|
| 639 |
break;
|
| 640 |
default:
|
| 641 |
SLJIT_ASSERT_STOP();
|
| 642 |
break;
|
| 643 |
}
|
| 644 |
|
| 645 |
if (flags & ARG2_IMM) {
|
| 646 |
FAIL_IF(load_immediate(compiler, TMP_REG2, arg2));
|
| 647 |
arg2 = TMP_REG2;
|
| 648 |
}
|
| 649 |
else {
|
| 650 |
FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
|
| 651 |
arg1 = TMP_REG1;
|
| 652 |
}
|
| 653 |
}
|
| 654 |
|
| 655 |
/* Both arguments are registers. */
|
| 656 |
switch (flags & 0xffff) {
|
| 657 |
case SLJIT_MOV:
|
| 658 |
case SLJIT_MOV_UI:
|
| 659 |
case SLJIT_MOV_SI:
|
| 660 |
case SLJIT_MOVU:
|
| 661 |
case SLJIT_MOVU_UI:
|
| 662 |
case SLJIT_MOVU_SI:
|
| 663 |
SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
|
| 664 |
return push_inst16(compiler, MOV | SET_REGS44(dst, arg2));
|
| 665 |
case SLJIT_MOV_UB:
|
| 666 |
case SLJIT_MOVU_UB:
|
| 667 |
SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
|
| 668 |
if (IS_2_LO_REGS(dst, arg2))
|
| 669 |
return push_inst16(compiler, UXTB | RD3(dst) | RN3(arg2));
|
| 670 |
return push_inst32(compiler, UXTB_W | RD4(dst) | RM4(arg2));
|
| 671 |
case SLJIT_MOV_SB:
|
| 672 |
case SLJIT_MOVU_SB:
|
| 673 |
SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
|
| 674 |
if (IS_2_LO_REGS(dst, arg2))
|
| 675 |
return push_inst16(compiler, SXTB | RD3(dst) | RN3(arg2));
|
| 676 |
return push_inst32(compiler, SXTB_W | RD4(dst) | RM4(arg2));
|
| 677 |
case SLJIT_MOV_UH:
|
| 678 |
case SLJIT_MOVU_UH:
|
| 679 |
SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
|
| 680 |
if (IS_2_LO_REGS(dst, arg2))
|
| 681 |
return push_inst16(compiler, UXTH | RD3(dst) | RN3(arg2));
|
| 682 |
return push_inst32(compiler, UXTH_W | RD4(dst) | RM4(arg2));
|
| 683 |
case SLJIT_MOV_SH:
|
| 684 |
case SLJIT_MOVU_SH:
|
| 685 |
SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1);
|
| 686 |
if (IS_2_LO_REGS(dst, arg2))
|
| 687 |
return push_inst16(compiler, SXTH | RD3(dst) | RN3(arg2));
|
| 688 |
return push_inst32(compiler, SXTH_W | RD4(dst) | RM4(arg2));
|
| 689 |
case SLJIT_NOT:
|
| 690 |
SLJIT_ASSERT(arg1 == TMP_REG1);
|
| 691 |
if (!(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
|
| 692 |
return push_inst16(compiler, MVNS | RD3(dst) | RN3(arg2));
|
| 693 |
return push_inst32(compiler, MVN_W | (flags & SET_FLAGS) | RD4(dst) | RM4(arg2));
|
| 694 |
case SLJIT_CLZ:
|
| 695 |
SLJIT_ASSERT(arg1 == TMP_REG1);
|
| 696 |
FAIL_IF(push_inst32(compiler, CLZ | RN4(arg2) | RD4(dst) | RM4(arg2)));
|
| 697 |
if (flags & SET_FLAGS) {
|
| 698 |
if (reg_map[dst] <= 7)
|
| 699 |
return push_inst16(compiler, CMPI | RDN3(dst));
|
| 700 |
return push_inst32(compiler, ADD_WI | SET_FLAGS | RN4(dst) | RD4(dst));
|
| 701 |
}
|
| 702 |
return SLJIT_SUCCESS;
|
| 703 |
case SLJIT_ADD:
|
| 704 |
if (!(flags & KEEP_FLAGS) && IS_3_LO_REGS(dst, arg1, arg2))
|
| 705 |
return push_inst16(compiler, ADDS | RD3(dst) | RN3(arg1) | RM3(arg2));
|
| 706 |
if (dst == arg1 && !(flags & SET_FLAGS))
|
| 707 |
return push_inst16(compiler, ADD | SET_REGS44(dst, arg2));
|
| 708 |
return push_inst32(compiler, ADD_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
|
| 709 |
case SLJIT_ADDC:
|
| 710 |
if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
|
| 711 |
return push_inst16(compiler, ADCS | RD3(dst) | RN3(arg2));
|
| 712 |
return push_inst32(compiler, ADC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
|
| 713 |
case SLJIT_SUB:
|
| 714 |
if (!(flags & KEEP_FLAGS) && IS_3_LO_REGS(dst, arg1, arg2))
|
| 715 |
return push_inst16(compiler, SUBS | RD3(dst) | RN3(arg1) | RM3(arg2));
|
| 716 |
return push_inst32(compiler, SUB_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
|
| 717 |
case SLJIT_SUBC:
|
| 718 |
if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
|
| 719 |
return push_inst16(compiler, SBCS | RD3(dst) | RN3(arg2));
|
| 720 |
return push_inst32(compiler, SBC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
|
| 721 |
case SLJIT_MUL:
|
| 722 |
if (!(flags & SET_FLAGS))
|
| 723 |
return push_inst32(compiler, MUL | RD4(dst) | RN4(arg1) | RM4(arg2));
|
| 724 |
SLJIT_ASSERT(reg_map[TMP_REG2] <= 7 && dst != TMP_REG2);
|
| 725 |
FAIL_IF(push_inst32(compiler, SMULL | RT4(dst) | RD4(TMP_REG2) | RN4(arg1) | RM4(arg2)));
|
| 726 |
/* cmp TMP_REG2, dst asr #31. */
|
| 727 |
return push_inst32(compiler, CMP_W | RN4(TMP_REG2) | 0x70e0 | RM4(dst));
|
| 728 |
case SLJIT_AND:
|
| 729 |
if (!(flags & KEEP_FLAGS)) {
|
| 730 |
if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
|
| 731 |
return push_inst16(compiler, ANDS | RD3(dst) | RN3(arg2));
|
| 732 |
if ((flags & UNUSED_RETURN) && IS_2_LO_REGS(arg1, arg2))
|
| 733 |
return push_inst16(compiler, TST | RD3(arg1) | RN3(arg2));
|
| 734 |
}
|
| 735 |
return push_inst32(compiler, AND_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
|
| 736 |
case SLJIT_OR:
|
| 737 |
if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
|
| 738 |
return push_inst16(compiler, ORRS | RD3(dst) | RN3(arg2));
|
| 739 |
return push_inst32(compiler, ORR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
|
| 740 |
case SLJIT_XOR:
|
| 741 |
if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
|
| 742 |
return push_inst16(compiler, EORS | RD3(dst) | RN3(arg2));
|
| 743 |
return push_inst32(compiler, EOR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
|
| 744 |
case SLJIT_SHL:
|
| 745 |
if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
|
| 746 |
return push_inst16(compiler, LSLS | RD3(dst) | RN3(arg2));
|
| 747 |
return push_inst32(compiler, LSL_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
|
| 748 |
case SLJIT_LSHR:
|
| 749 |
if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
|
| 750 |
return push_inst16(compiler, LSRS | RD3(dst) | RN3(arg2));
|
| 751 |
return push_inst32(compiler, LSR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
|
| 752 |
case SLJIT_ASHR:
|
| 753 |
if (dst == arg1 && !(flags & KEEP_FLAGS) && IS_2_LO_REGS(dst, arg2))
|
| 754 |
return push_inst16(compiler, ASRS | RD3(dst) | RN3(arg2));
|
| 755 |
return push_inst32(compiler, ASR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
|
| 756 |
}
|
| 757 |
|
| 758 |
SLJIT_ASSERT_STOP();
|
| 759 |
return SLJIT_SUCCESS;
|
| 760 |
}
|
| 761 |
|
| 762 |
#define STORE 0x01
|
| 763 |
#define SIGNED 0x02
|
| 764 |
|
| 765 |
#define WORD_SIZE 0x00
|
| 766 |
#define BYTE_SIZE 0x04
|
| 767 |
#define HALF_SIZE 0x08
|
| 768 |
|
| 769 |
#define UPDATE 0x10
|
| 770 |
#define ARG_TEST 0x20
|
| 771 |
|
| 772 |
#define IS_WORD_SIZE(flags) (!(flags & (BYTE_SIZE | HALF_SIZE)))
|
| 773 |
#define OFFSET_CHECK(imm, shift) (!(argw & ~(imm << shift)))
|
| 774 |
|
| 775 |
/*
|
| 776 |
1st letter:
|
| 777 |
w = word
|
| 778 |
b = byte
|
| 779 |
h = half
|
| 780 |
|
| 781 |
2nd letter:
|
| 782 |
s = signed
|
| 783 |
u = unsigned
|
| 784 |
|
| 785 |
3rd letter:
|
| 786 |
l = load
|
| 787 |
s = store
|
| 788 |
*/
|
| 789 |
|
| 790 |
static SLJIT_CONST sljit_uw sljit_mem16[12] = {
|
| 791 |
/* w u l */ 0x5800 /* ldr */,
|
| 792 |
/* w u s */ 0x5000 /* str */,
|
| 793 |
/* w s l */ 0x5800 /* ldr */,
|
| 794 |
/* w s s */ 0x5000 /* str */,
|
| 795 |
|
| 796 |
/* b u l */ 0x5c00 /* ldrb */,
|
| 797 |
/* b u s */ 0x5400 /* strb */,
|
| 798 |
/* b s l */ 0x5600 /* ldrsb */,
|
| 799 |
/* b s s */ 0x5400 /* strb */,
|
| 800 |
|
| 801 |
/* h u l */ 0x5a00 /* ldrh */,
|
| 802 |
/* h u s */ 0x5200 /* strh */,
|
| 803 |
/* h s l */ 0x5e00 /* ldrsh */,
|
| 804 |
/* h s s */ 0x5200 /* strh */,
|
| 805 |
};
|
| 806 |
|
| 807 |
static SLJIT_CONST sljit_uw sljit_mem16_imm5[12] = {
|
| 808 |
/* w u l */ 0x6800 /* ldr imm5 */,
|
| 809 |
/* w u s */ 0x6000 /* str imm5 */,
|
| 810 |
/* w s l */ 0x6800 /* ldr imm5 */,
|
| 811 |
/* w s s */ 0x6000 /* str imm5 */,
|
| 812 |
|
| 813 |
/* b u l */ 0x7800 /* ldrb imm5 */,
|
| 814 |
/* b u s */ 0x7000 /* strb imm5 */,
|
| 815 |
/* b s l */ 0x0000 /* not allowed */,
|
| 816 |
/* b s s */ 0x7000 /* strb imm5 */,
|
| 817 |
|
| 818 |
/* h u l */ 0x8800 /* ldrh imm5 */,
|
| 819 |
/* h u s */ 0x8000 /* strh imm5 */,
|
| 820 |
/* h s l */ 0x0000 /* not allowed */,
|
| 821 |
/* h s s */ 0x8000 /* strh imm5 */,
|
| 822 |
};
|
| 823 |
|
| 824 |
#define MEM_IMM8 0xc00
|
| 825 |
#define MEM_IMM12 0x800000
|
| 826 |
static SLJIT_CONST sljit_uw sljit_mem32[12] = {
|
| 827 |
/* w u l */ 0xf8500000 /* ldr.w */,
|
| 828 |
/* w u s */ 0xf8400000 /* str.w */,
|
| 829 |
/* w s l */ 0xf8500000 /* ldr.w */,
|
| 830 |
/* w s s */ 0xf8400000 /* str.w */,
|
| 831 |
|
| 832 |
/* b u l */ 0xf8100000 /* ldrb.w */,
|
| 833 |
/* b u s */ 0xf8000000 /* strb.w */,
|
| 834 |
/* b s l */ 0xf9100000 /* ldrsb.w */,
|
| 835 |
/* b s s */ 0xf8000000 /* strb.w */,
|
| 836 |
|
| 837 |
/* h u l */ 0xf8300000 /* ldrh.w */,
|
| 838 |
/* h u s */ 0xf8200000 /* strsh.w */,
|
| 839 |
/* h s l */ 0xf9300000 /* ldrsh.w */,
|
| 840 |
/* h s s */ 0xf8200000 /* strsh.w */,
|
| 841 |
};
|
| 842 |
|
| 843 |
/* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */
|
| 844 |
static int emit_set_delta(struct sljit_compiler *compiler, int dst, int reg, sljit_w value)
|
| 845 |
{
|
| 846 |
if (value >= 0) {
|
| 847 |
if (value <= 0xfff)
|
| 848 |
return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(value));
|
| 849 |
value = get_imm(value);
|
| 850 |
if (value != INVALID_IMM)
|
| 851 |
return push_inst32(compiler, ADD_WI | RD4(dst) | RN4(reg) | value);
|
| 852 |
}
|
| 853 |
else {
|
| 854 |
value = -value;
|
| 855 |
if (value <= 0xfff)
|
| 856 |
return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(value));
|
| 857 |
value = get_imm(value);
|
| 858 |
if (value != INVALID_IMM)
|
| 859 |
return push_inst32(compiler, SUB_WI | RD4(dst) | RN4(reg) | value);
|
| 860 |
}
|
| 861 |
return SLJIT_ERR_UNSUPPORTED;
|
| 862 |
}
|
| 863 |
|
| 864 |
/* Can perform an operation using at most 1 instruction. */
|
| 865 |
static int getput_arg_fast(struct sljit_compiler *compiler, int flags, int reg, int arg, sljit_w argw)
|
| 866 |
{
|
| 867 |
int tmp;
|
| 868 |
|
| 869 |
SLJIT_ASSERT(arg & SLJIT_MEM);
|
| 870 |
|
| 871 |
if (SLJIT_UNLIKELY(flags & UPDATE)) {
|
| 872 |
if ((arg & 0xf) && !(arg & 0xf0) && argw <= 0xff && argw >= -0xff) {
|
| 873 |
flags &= ~UPDATE;
|
| 874 |
arg &= 0xf;
|
| 875 |
if (SLJIT_UNLIKELY(flags & ARG_TEST))
|
| 876 |
return 1;
|
| 877 |
|
| 878 |
if (argw >= 0)
|
| 879 |
argw |= 0x200;
|
| 880 |
else {
|
| 881 |
argw = -argw;
|
| 882 |
}
|
| 883 |
SLJIT_ASSERT(argw >= 0 && (argw & 0xff) <= 0xff);
|
| 884 |
FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | 0x100 | argw));
|
| 885 |
return -1;
|
| 886 |
}
|
| 887 |
return (flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
|
| 888 |
}
|
| 889 |
|
| 890 |
if (SLJIT_UNLIKELY(arg & 0xf0)) {
|
| 891 |
argw &= 0x3;
|
| 892 |
tmp = (arg >> 4) & 0xf;
|
| 893 |
arg &= 0xf;
|
| 894 |
if (SLJIT_UNLIKELY(flags & ARG_TEST))
|
| 895 |
return 1;
|
| 896 |
|
| 897 |
if (!argw && IS_3_LO_REGS(reg, arg, tmp))
|
| 898 |
FAIL_IF(push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(tmp)));
|
| 899 |
else
|
| 900 |
FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(tmp) | (argw << 4)));
|
| 901 |
return -1;
|
| 902 |
}
|
| 903 |
|
| 904 |
if (!(arg & 0xf) || argw > 0xfff || argw < -0xff)
|
| 905 |
return (flags & ARG_TEST) ? SLJIT_SUCCESS : 0;
|
| 906 |
|
| 907 |
if (SLJIT_UNLIKELY(flags & ARG_TEST))
|
| 908 |
return 1;
|
| 909 |
|
| 910 |
arg &= 0xf;
|
| 911 |
if (IS_2_LO_REGS(reg, arg) && sljit_mem16_imm5[flags]) {
|
| 912 |
tmp = 3;
|
| 913 |
if (IS_WORD_SIZE(flags)) {
|
| 914 |
if (OFFSET_CHECK(0x1f, 2))
|
| 915 |
tmp = 2;
|
| 916 |
}
|
| 917 |
else if (flags & BYTE_SIZE)
|
| 918 |
{
|
| 919 |
if (OFFSET_CHECK(0x1f, 0))
|
| 920 |
tmp = 0;
|
| 921 |
}
|
| 922 |
else {
|
| 923 |
SLJIT_ASSERT(flags & HALF_SIZE);
|
| 924 |
if (OFFSET_CHECK(0x1f, 1))
|
| 925 |
tmp = 1;
|
| 926 |
}
|
| 927 |
|
| 928 |
if (tmp != 3) {
|
| 929 |
FAIL_IF(push_inst16(compiler, sljit_mem16_imm5[flags] | RD3(reg) | RN3(arg) | (argw << (6 - tmp))));
|
| 930 |
return -1;
|
| 931 |
}
|
| 932 |
}
|
| 933 |
|
| 934 |
/* SP based immediate. */
|
| 935 |
if (SLJIT_UNLIKELY(arg == SLJIT_LOCALS_REG) && OFFSET_CHECK(0xff, 2) && IS_WORD_SIZE(flags) && reg_map[reg] <= 7) {
|
| 936 |
FAIL_IF(push_inst16(compiler, STR_SP | ((flags & STORE) ? 0 : 0x800) | RDN3(reg) | (argw >> 2)));
|
| 937 |
return -1;
|
| 938 |
}
|
| 939 |
|
| 940 |
if (argw >= 0)
|
| 941 |
FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw));
|
| 942 |
else
|
| 943 |
FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | -argw));
|
| 944 |
return -1;
|
| 945 |
}
|
| 946 |
|
| 947 |
/* see getput_arg below.
|
| 948 |
Note: can_cache is called only for binary operators. Those
|
| 949 |
operators always uses word arguments without write back. */
|
| 950 |
static int can_cache(int arg, sljit_w argw, int next_arg, sljit_w next_argw)
|
| 951 |
{
|
| 952 |
/* Simple operation except for updates. */
|
| 953 |
if ((arg & 0xf0) || !(next_arg & SLJIT_MEM))
|
| 954 |
return 0;
|
| 955 |
|
| 956 |
if (!(arg & 0xf)) {
|
| 957 |
if ((sljit_uw)(argw - next_argw) <= 0xfff || (sljit_uw)(next_argw - argw) <= 0xfff)
|
| 958 |
return 1;
|
| 959 |
return 0;
|
| 960 |
}
|
| 961 |
|
| 962 |
if (argw == next_argw)
|
| 963 |
return 1;
|
| 964 |
|
| 965 |
if (arg == next_arg && ((sljit_uw)(argw - next_argw) <= 0xfff || (sljit_uw)(next_argw - argw) <= 0xfff))
|
| 966 |
return 1;
|
| 967 |
|
| 968 |
return 0;
|
| 969 |
}
|
| 970 |
|
| 971 |
/* Emit the necessary instructions. See can_cache above. */
|
| 972 |
static int getput_arg(struct sljit_compiler *compiler, int flags, int reg, int arg, sljit_w argw, int next_arg, sljit_w next_argw)
|
| 973 |
{
|
| 974 |
int tmp_r;
|
| 975 |
sljit_w tmp;
|
| 976 |
|
| 977 |
SLJIT_ASSERT(arg & SLJIT_MEM);
|
| 978 |
if (!(next_arg & SLJIT_MEM)) {
|
| 979 |
next_arg = 0;
|
| 980 |
next_argw = 0;
|
| 981 |
}
|
| 982 |
|
| 983 |
tmp_r = (flags & STORE) ? TMP_REG3 : reg;
|
| 984 |
|
| 985 |
if (SLJIT_UNLIKELY(flags & UPDATE)) {
|
| 986 |
flags &= ~UPDATE;
|
| 987 |
/* Update only applies if a base register exists. */
|
| 988 |
if (arg & 0xf) {
|
| 989 |
/* There is no caching here. */
|
| 990 |
tmp = (arg & 0xf0) >> 4;
|
| 991 |
arg &= 0xf;
|
| 992 |
|
| 993 |
if (!tmp) {
|
| 994 |
if (!(argw & ~0xfff)) {
|
| 995 |
FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw));
|
| 996 |
return push_inst32(compiler, ADDWI | RD4(arg) | RN4(arg) | IMM12(argw));
|
| 997 |
}
|
| 998 |
|
| 999 |
if (compiler->cache_arg == SLJIT_MEM) {
|
| 1000 |
if (argw == compiler->cache_argw) {
|
| 1001 |
tmp = TMP_REG3;
|
| 1002 |
argw = 0;
|
| 1003 |
}
|
| 1004 |
else if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) {
|
| 1005 |
FAIL_IF(compiler->error);
|
| 1006 |
compiler->cache_argw = argw;
|
| 1007 |
tmp = TMP_REG3;
|
| 1008 |
argw = 0;
|
| 1009 |
}
|
| 1010 |
}
|
| 1011 |
|
| 1012 |
if (argw) {
|
| 1013 |
FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
|
| 1014 |
compiler->cache_arg = SLJIT_MEM;
|
| 1015 |
compiler->cache_argw = argw;
|
| 1016 |
tmp = TMP_REG3;
|
| 1017 |
argw = 0;
|
| 1018 |
}
|
| 1019 |
}
|
| 1020 |
|
| 1021 |
argw &= 0x3;
|
| 1022 |
if (!argw && IS_3_LO_REGS(reg, arg, tmp)) {
|
| 1023 |
FAIL_IF(push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(tmp)));
|
| 1024 |
return push_inst16(compiler, ADD | SET_REGS44(arg, tmp));
|
| 1025 |
}
|
| 1026 |
FAIL_IF(push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(tmp) | (argw << 4)));
|
| 1027 |
return push_inst32(compiler, ADD_W | RD4(arg) | RN4(arg) | RM4(tmp) | (argw << 6));
|
| 1028 |
}
|
| 1029 |
}
|
| 1030 |
|
| 1031 |
SLJIT_ASSERT(!(arg & 0xf0));
|
| 1032 |
|
| 1033 |
if (compiler->cache_arg == arg) {
|
| 1034 |
if (!((argw - compiler->cache_argw) & ~0xfff))
|
| 1035 |
return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | (argw - compiler->cache_argw));
|
| 1036 |
if (!((compiler->cache_argw - argw) & ~0xff))
|
| 1037 |
return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(TMP_REG3) | (compiler->cache_argw - argw));
|
| 1038 |
if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) {
|
| 1039 |
FAIL_IF(compiler->error);
|
| 1040 |
return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | 0);
|
| 1041 |
}
|
| 1042 |
}
|
| 1043 |
|
| 1044 |
next_arg = (arg & 0xf) && (arg == next_arg);
|
| 1045 |
arg &= 0xf;
|
| 1046 |
if (arg && compiler->cache_arg == SLJIT_MEM && compiler->cache_argw == argw)
|
| 1047 |
return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3));
|
| 1048 |
|
| 1049 |
compiler->cache_argw = argw;
|
| 1050 |
if (next_arg && emit_set_delta(compiler, TMP_REG3, arg, argw) != SLJIT_ERR_UNSUPPORTED) {
|
| 1051 |
FAIL_IF(compiler->error);
|
| 1052 |
compiler->cache_arg = SLJIT_MEM | arg;
|
| 1053 |
arg = 0;
|
| 1054 |
}
|
| 1055 |
else {
|
| 1056 |
FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
|
| 1057 |
compiler->cache_arg = SLJIT_MEM;
|
| 1058 |
|
| 1059 |
if (next_arg) {
|
| 1060 |
FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG3, arg)));
|
| 1061 |
compiler->cache_arg = SLJIT_MEM | arg;
|
| 1062 |
arg = 0;
|
| 1063 |
}
|
| 1064 |
}
|
| 1065 |
|
| 1066 |
if (arg)
|
| 1067 |
return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(TMP_REG3));
|
| 1068 |
return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(TMP_REG3) | 0);
|
| 1069 |
}
|
| 1070 |
|
| 1071 |
static SLJIT_INLINE int emit_op_mem(struct sljit_compiler *compiler, int flags, int reg, int arg, sljit_w argw)
|
| 1072 |
{
|
| 1073 |
if (getput_arg_fast(compiler, flags, reg, arg, argw))
|
| 1074 |
return compiler->error;
|
| 1075 |
compiler->cache_arg = 0;
|
| 1076 |
compiler->cache_argw = 0;
|
| 1077 |
return getput_arg(compiler, flags, reg, arg, argw, 0, 0);
|
| 1078 |
}
|
| 1079 |
|
| 1080 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
|
| 1081 |
{
|
| 1082 |
int size;
|
| 1083 |
sljit_ins push;
|
| 1084 |
|
| 1085 |
CHECK_ERROR();
|
| 1086 |
check_sljit_emit_enter(compiler, args, temporaries, generals, local_size);
|
| 1087 |
|
| 1088 |
compiler->temporaries = temporaries;
|
| 1089 |
compiler->generals = generals;
|
| 1090 |
|
| 1091 |
push = (1 << 4);
|
| 1092 |
if (generals >= 5)
|
| 1093 |
push |= 1 << 11;
|
| 1094 |
if (generals >= 4)
|
| 1095 |
push |= 1 << 10;
|
| 1096 |
if (generals >= 3)
|
| 1097 |
push |= 1 << 8;
|
| 1098 |
if (generals >= 2)
|
| 1099 |
push |= 1 << 7;
|
| 1100 |
if (generals >= 1)
|
| 1101 |
push |= 1 << 6;
|
| 1102 |
if (temporaries >= 5)
|
| 1103 |
push |= 1 << 5;
|
| 1104 |
FAIL_IF(generals >= 3
|
| 1105 |
? push_inst32(compiler, PUSH_W | (1 << 14) | push)
|
| 1106 |
: push_inst16(compiler, PUSH | push));
|
| 1107 |
|
| 1108 |
/* Stack must be aligned to 8 bytes: */
|
| 1109 |
size = (3 + generals) * sizeof(sljit_uw);
|
| 1110 |
local_size += size;
|
| 1111 |
local_size = (local_size + 7) & ~7;
|
| 1112 |
local_size -= size;
|
| 1113 |
compiler->local_size = local_size;
|
| 1114 |
if (local_size > 0) {
|
| 1115 |
if (local_size <= (127 << 2))
|
| 1116 |
FAIL_IF(push_inst16(compiler, SUB_SP | (local_size >> 2)));
|
| 1117 |
else
|
| 1118 |
FAIL_IF(emit_op_imm(compiler, SLJIT_SUB | ARG2_IMM, SLJIT_LOCALS_REG, SLJIT_LOCALS_REG, local_size));
|
| 1119 |
}
|
| 1120 |
|
| 1121 |
if (args >= 1)
|
| 1122 |
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_GENERAL_REG1, SLJIT_TEMPORARY_REG1)));
|
| 1123 |
if (args >= 2)
|
| 1124 |
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_GENERAL_REG2, SLJIT_TEMPORARY_REG2)));
|
| 1125 |
if (args >= 3)
|
| 1126 |
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_GENERAL_REG3, SLJIT_TEMPORARY_REG3)));
|
| 1127 |
|
| 1128 |
return SLJIT_SUCCESS;
|
| 1129 |
}
|
| 1130 |
|
| 1131 |
SLJIT_API_FUNC_ATTRIBUTE void sljit_fake_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size)
|
| 1132 |
{
|
| 1133 |
int size;
|
| 1134 |
|
| 1135 |
CHECK_ERROR_VOID();
|
| 1136 |
check_sljit_fake_enter(compiler, args, temporaries, generals, local_size);
|
| 1137 |
|
| 1138 |
compiler->temporaries = temporaries;
|
| 1139 |
compiler->generals = generals;
|
| 1140 |
|
| 1141 |
size = (3 + generals) * sizeof(sljit_uw);
|
| 1142 |
local_size += size;
|
| 1143 |
local_size = (local_size + 7) & ~7;
|
| 1144 |
local_size -= size;
|
| 1145 |
compiler->local_size = local_size;
|
| 1146 |
}
|
| 1147 |
|
| 1148 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
|
| 1149 |
{
|
| 1150 |
sljit_ins pop;
|
| 1151 |
|
| 1152 |
CHECK_ERROR();
|
| 1153 |
check_sljit_emit_return(compiler, src, srcw);
|
| 1154 |
|
| 1155 |
if (src != SLJIT_UNUSED && src != SLJIT_RETURN_REG) {
|
| 1156 |
if (src >= SLJIT_TEMPORARY_REG1 && src <= TMP_REG3)
|
| 1157 |
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_RETURN_REG, src)));
|
| 1158 |
else
|
| 1159 |
FAIL_IF(emit_op_mem(compiler, WORD_SIZE, SLJIT_RETURN_REG, src, srcw));
|
| 1160 |
}
|
| 1161 |
|
| 1162 |
if (compiler->local_size > 0) {
|
| 1163 |
if (compiler->local_size <= (127 << 2))
|
| 1164 |
FAIL_IF(push_inst16(compiler, ADD_SP | (compiler->local_size >> 2)));
|
| 1165 |
else
|
| 1166 |
FAIL_IF(emit_op_imm(compiler, SLJIT_ADD | ARG2_IMM, SLJIT_LOCALS_REG, SLJIT_LOCALS_REG, compiler->local_size));
|
| 1167 |
}
|
| 1168 |
|
| 1169 |
pop = (1 << 4);
|
| 1170 |
if (compiler->generals >= 5)
|
| 1171 |
pop |= 1 << 11;
|
| 1172 |
if (compiler->generals >= 4)
|
| 1173 |
pop |= 1 << 10;
|
| 1174 |
if (compiler->generals >= 3)
|
| 1175 |
pop |= 1 << 8;
|
| 1176 |
if (compiler->generals >= 2)
|
| 1177 |
pop |= 1 << 7;
|
| 1178 |
if (compiler->generals >= 1)
|
| 1179 |
pop |= 1 << 6;
|
| 1180 |
if (compiler->temporaries >= 5)
|
| 1181 |
pop |= 1 << 5;
|
| 1182 |
return compiler->generals >= 3
|
| 1183 |
? push_inst32(compiler, POP_W | (1 << 15) | pop)
|
| 1184 |
: push_inst16(compiler, POP | pop);
|
| 1185 |
}
|
| 1186 |
|
| 1187 |
/* --------------------------------------------------------------------- */
|
| 1188 |
/* Operators */
|
| 1189 |
/* --------------------------------------------------------------------- */
|
| 1190 |
|
| 1191 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op0(struct sljit_compiler *compiler, int op)
|
| 1192 |
{
|
| 1193 |
CHECK_ERROR();
|
| 1194 |
check_sljit_emit_op0(compiler, op);
|
| 1195 |
|
| 1196 |
op = GET_OPCODE(op);
|
| 1197 |
switch (op) {
|
| 1198 |
case SLJIT_BREAKPOINT:
|
| 1199 |
push_inst16(compiler, BKPT);
|
| 1200 |
break;
|
| 1201 |
case SLJIT_NOP:
|
| 1202 |
push_inst16(compiler, NOP);
|
| 1203 |
break;
|
| 1204 |
}
|
| 1205 |
|
| 1206 |
return SLJIT_SUCCESS;
|
| 1207 |
}
|
| 1208 |
|
| 1209 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op1(struct sljit_compiler *compiler, int op,
|
| 1210 |
int dst, sljit_w dstw,
|
| 1211 |
int src, sljit_w srcw)
|
| 1212 |
{
|
| 1213 |
int op_type, dst_r, flags;
|
| 1214 |
|
| 1215 |
CHECK_ERROR();
|
| 1216 |
check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw);
|
| 1217 |
|
| 1218 |
compiler->cache_arg = 0;
|
| 1219 |
compiler->cache_argw = 0;
|
| 1220 |
|
| 1221 |
op_type = GET_OPCODE(op);
|
| 1222 |
dst_r = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG1;
|
| 1223 |
|
| 1224 |
if (op_type >= SLJIT_MOV && op_type <= SLJIT_MOVU_SI) {
|
| 1225 |
switch (op_type) {
|
| 1226 |
case SLJIT_MOV:
|
| 1227 |
case SLJIT_MOV_UI:
|
| 1228 |
case SLJIT_MOV_SI:
|
| 1229 |
flags = WORD_SIZE;
|
| 1230 |
break;
|
| 1231 |
case SLJIT_MOV_UB:
|
| 1232 |
flags = BYTE_SIZE;
|
| 1233 |
if (src & SLJIT_IMM)
|
| 1234 |
srcw = (unsigned char)srcw;
|
| 1235 |
break;
|
| 1236 |
case SLJIT_MOV_SB:
|
| 1237 |
flags = BYTE_SIZE | SIGNED;
|
| 1238 |
if (src & SLJIT_IMM)
|
| 1239 |
srcw = (signed char)srcw;
|
| 1240 |
break;
|
| 1241 |
case SLJIT_MOV_UH:
|
| 1242 |
flags = HALF_SIZE;
|
| 1243 |
if (src & SLJIT_IMM)
|
| 1244 |
srcw = (unsigned short)srcw;
|
| 1245 |
break;
|
| 1246 |
case SLJIT_MOV_SH:
|
| 1247 |
flags = HALF_SIZE | SIGNED;
|
| 1248 |
if (src & SLJIT_IMM)
|
| 1249 |
srcw = (signed short)srcw;
|
| 1250 |
break;
|
| 1251 |
case SLJIT_MOVU:
|
| 1252 |
case SLJIT_MOVU_UI:
|
| 1253 |
case SLJIT_MOVU_SI:
|
| 1254 |
flags = WORD_SIZE | UPDATE;
|
| 1255 |
break;
|
| 1256 |
case SLJIT_MOVU_UB:
|
| 1257 |
flags = BYTE_SIZE | UPDATE;
|
| 1258 |
if (src & SLJIT_IMM)
|
| 1259 |
srcw = (unsigned char)srcw;
|
| 1260 |
break;
|
| 1261 |
case SLJIT_MOVU_SB:
|
| 1262 |
flags = BYTE_SIZE | SIGNED | UPDATE;
|
| 1263 |
if (src & SLJIT_IMM)
|
| 1264 |
srcw = (signed char)srcw;
|
| 1265 |
break;
|
| 1266 |
case SLJIT_MOVU_UH:
|
| 1267 |
flags = HALF_SIZE | UPDATE;
|
| 1268 |
if (src & SLJIT_IMM)
|
| 1269 |
srcw = (unsigned short)srcw;
|
| 1270 |
break;
|
| 1271 |
case SLJIT_MOVU_SH:
|
| 1272 |
flags = HALF_SIZE | SIGNED | UPDATE;
|
| 1273 |
if (src & SLJIT_IMM)
|
| 1274 |
srcw = (signed short)srcw;
|
| 1275 |
break;
|
| 1276 |
default:
|
| 1277 |
SLJIT_ASSERT_STOP();
|
| 1278 |
flags = 0;
|
| 1279 |
break;
|
| 1280 |
}
|
| 1281 |
|
| 1282 |
if (src & SLJIT_IMM)
|
| 1283 |
FAIL_IF(emit_op_imm(compiler, SLJIT_MOV | ARG2_IMM, dst_r, TMP_REG1, srcw));
|
| 1284 |
else if (src & SLJIT_MEM) {
|
| 1285 |
if (getput_arg_fast(compiler, flags, dst_r, src, srcw))
|
| 1286 |
FAIL_IF(compiler->error);
|
| 1287 |
else
|
| 1288 |
FAIL_IF(getput_arg(compiler, flags, dst_r, src, srcw, dst, dstw));
|
| 1289 |
} else {
|
| 1290 |
if (dst_r != TMP_REG1)
|
| 1291 |
return emit_op_imm(compiler, op_type, dst_r, TMP_REG1, src);
|
| 1292 |
dst_r = src;
|
| 1293 |
}
|
| 1294 |
|
| 1295 |
if (dst & SLJIT_MEM) {
|
| 1296 |
if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw))
|
| 1297 |
return compiler->error;
|
| 1298 |
else
|
| 1299 |
return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0);
|
| 1300 |
}
|
| 1301 |
return SLJIT_SUCCESS;
|
| 1302 |
}
|
| 1303 |
|
| 1304 |
if (op_type == SLJIT_NEG) {
|
| 1305 |
#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
|
| 1306 |
compiler->skip_checks = 1;
|
| 1307 |
#endif
|
| 1308 |
return sljit_emit_op2(compiler, GET_FLAGS(op) | SLJIT_SUB, dst, dstw, SLJIT_IMM, 0, src, srcw);
|
| 1309 |
}
|
| 1310 |
|
| 1311 |
flags = (GET_FLAGS(op) ? SET_FLAGS : 0) | ((op & SLJIT_KEEP_FLAGS) ? KEEP_FLAGS : 0);
|
| 1312 |
if (src & SLJIT_MEM) {
|
| 1313 |
if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG2, src, srcw))
|
| 1314 |
FAIL_IF(compiler->error);
|
| 1315 |
else
|
| 1316 |
FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src, srcw, dst, dstw));
|
| 1317 |
src = TMP_REG2;
|
| 1318 |
}
|
| 1319 |
|
| 1320 |
if (src & SLJIT_IMM)
|
| 1321 |
flags |= ARG2_IMM;
|
| 1322 |
else
|
| 1323 |
srcw = src;
|
| 1324 |
|
| 1325 |
emit_op_imm(compiler, flags | op_type, dst_r, TMP_REG1, srcw);
|
| 1326 |
|
| 1327 |
if (dst & SLJIT_MEM) {
|
| 1328 |
if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw))
|
| 1329 |
return compiler->error;
|
| 1330 |
else
|
| 1331 |
return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0);
|
| 1332 |
}
|
| 1333 |
return SLJIT_SUCCESS;
|
| 1334 |
}
|
| 1335 |
|
| 1336 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op2(struct sljit_compiler *compiler, int op,
|
| 1337 |
int dst, sljit_w dstw,
|
| 1338 |
int src1, sljit_w src1w,
|
| 1339 |
int src2, sljit_w src2w)
|
| 1340 |
{
|
| 1341 |
int dst_r, flags;
|
| 1342 |
|
| 1343 |
CHECK_ERROR();
|
| 1344 |
check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
|
| 1345 |
|
| 1346 |
compiler->cache_arg = 0;
|
| 1347 |
compiler->cache_argw = 0;
|
| 1348 |
|
| 1349 |
dst_r = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG1;
|
| 1350 |
flags = (GET_FLAGS(op) ? SET_FLAGS : 0) | ((op & SLJIT_KEEP_FLAGS) ? KEEP_FLAGS : 0);
|
| 1351 |
|
| 1352 |
if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, WORD_SIZE | STORE | ARG_TEST, TMP_REG1, dst, dstw))
|
| 1353 |
flags |= SLOW_DEST;
|
| 1354 |
|
| 1355 |
if (src1 & SLJIT_MEM) {
|
| 1356 |
if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG1, src1, src1w))
|
| 1357 |
FAIL_IF(compiler->error);
|
| 1358 |
else
|
| 1359 |
flags |= SLOW_SRC1;
|
| 1360 |
}
|
| 1361 |
if (src2 & SLJIT_MEM) {
|
| 1362 |
if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG2, src2, src2w))
|
| 1363 |
FAIL_IF(compiler->error);
|
| 1364 |
else
|
| 1365 |
flags |= SLOW_SRC2;
|
| 1366 |
}
|
| 1367 |
|
| 1368 |
if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) {
|
| 1369 |
if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) {
|
| 1370 |
FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, src1, src1w));
|
| 1371 |
FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, dst, dstw));
|
| 1372 |
}
|
| 1373 |
else {
|
| 1374 |
FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, src2, src2w));
|
| 1375 |
FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, dst, dstw));
|
| 1376 |
}
|
| 1377 |
}
|
| 1378 |
else if (flags & SLOW_SRC1)
|
| 1379 |
FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG1, src1, src1w, dst, dstw));
|
| 1380 |
else if (flags & SLOW_SRC2)
|
| 1381 |
FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src2, src2w, dst, dstw));
|
| 1382 |
|
| 1383 |
if (src1 & SLJIT_MEM)
|
| 1384 |
src1 = TMP_REG1;
|
| 1385 |
if (src2 & SLJIT_MEM)
|
| 1386 |
src2 = TMP_REG2;
|
| 1387 |
|
| 1388 |
if (src1 & SLJIT_IMM)
|
| 1389 |
flags |= ARG1_IMM;
|
| 1390 |
else
|
| 1391 |
src1w = src1;
|
| 1392 |
if (src2 & SLJIT_IMM)
|
| 1393 |
flags |= ARG2_IMM;
|
| 1394 |
else
|
| 1395 |
src2w = src2;
|
| 1396 |
|
| 1397 |
if (dst == SLJIT_UNUSED)
|
| 1398 |
flags |= UNUSED_RETURN;
|
| 1399 |
|
| 1400 |
if (GET_OPCODE(op) == SLJIT_MUL && (op & SLJIT_SET_O))
|
| 1401 |
flags |= SET_MULOV;
|
| 1402 |
|
| 1403 |
emit_op_imm(compiler, flags | GET_OPCODE(op), dst_r, src1w, src2w);
|
| 1404 |
|
| 1405 |
if (dst & SLJIT_MEM) {
|
| 1406 |
if (!(flags & SLOW_DEST)) {
|
| 1407 |
getput_arg_fast(compiler, WORD_SIZE | STORE, dst_r, dst, dstw);
|
| 1408 |
return compiler->error;
|
| 1409 |
}
|
| 1410 |
return getput_arg(compiler, WORD_SIZE | STORE, TMP_REG1, dst, dstw, 0, 0);
|
| 1411 |
}
|
| 1412 |
return SLJIT_SUCCESS;
|
| 1413 |
}
|
| 1414 |
|
| 1415 |
/* --------------------------------------------------------------------- */
|
| 1416 |
/* Floating point operators */
|
| 1417 |
/* --------------------------------------------------------------------- */
|
| 1418 |
|
| 1419 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void)
|
| 1420 |
{
|
| 1421 |
return 1;
|
| 1422 |
}
|
| 1423 |
|
| 1424 |
static int emit_fop_mem(struct sljit_compiler *compiler, int flags, int reg, int arg, sljit_w argw)
|
| 1425 |
{
|
| 1426 |
sljit_w tmp;
|
| 1427 |
sljit_w inst = VSTR | ((flags & STORE) ? 0 : 0x00100000);
|
| 1428 |
|
| 1429 |
SLJIT_ASSERT(arg & SLJIT_MEM);
|
| 1430 |
|
| 1431 |
/* Fast loads and stores. */
|
| 1432 |
if (SLJIT_UNLIKELY(arg & 0xf0)) {
|
| 1433 |
FAIL_IF(push_inst32(compiler, ADD_W | RD4(TMP_REG2) | RN4(arg & 0xf) | RM4((arg & 0xf0) >> 4) | ((argw & 0x3) << 6)));
|
| 1434 |
arg = SLJIT_MEM | TMP_REG2;
|
| 1435 |
argw = 0;
|
| 1436 |
}
|
| 1437 |
|
| 1438 |
if (arg & 0xf) {
|
| 1439 |
if (!(argw & ~0x3fc))
|
| 1440 |
return push_inst32(compiler, inst | 0x800000 | RN4(arg & 0xf) | DD4(reg) | (argw >> 2));
|
| 1441 |
if (!(-argw & ~0x3fc))
|
| 1442 |
return push_inst32(compiler, inst | RN4(arg & 0xf) | DD4(reg) | (-argw >> 2));
|
| 1443 |
}
|
| 1444 |
|
| 1445 |
SLJIT_ASSERT(!(arg & 0xf0));
|
| 1446 |
if (compiler->cache_arg == arg) {
|
| 1447 |
tmp = argw - compiler->cache_argw;
|
| 1448 |
if (!(tmp & ~0x3fc))
|
| 1449 |
return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg) | (tmp >> 2));
|
| 1450 |
if (!(-tmp & ~0x3fc))
|
| 1451 |
return push_inst32(compiler, inst | RN4(TMP_REG3) | DD4(reg) | (-tmp >> 2));
|
| 1452 |
if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, tmp) != SLJIT_ERR_UNSUPPORTED) {
|
| 1453 |
FAIL_IF(compiler->error);
|
| 1454 |
compiler->cache_argw = argw;
|
| 1455 |
return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg));
|
| 1456 |
}
|
| 1457 |
}
|
| 1458 |
|
| 1459 |
compiler->cache_arg = arg;
|
| 1460 |
compiler->cache_argw = argw;
|
| 1461 |
|
| 1462 |
if (SLJIT_UNLIKELY(!(arg & 0xf)))
|
| 1463 |
FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
|
| 1464 |
else if (emit_set_delta(compiler, TMP_REG3, arg & 0xf, argw) != SLJIT_ERR_UNSUPPORTED)
|
| 1465 |
FAIL_IF(compiler->error);
|
| 1466 |
else {
|
| 1467 |
FAIL_IF(load_immediate(compiler, TMP_REG3, argw));
|
| 1468 |
if (arg & 0xf)
|
| 1469 |
FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG3, (arg & 0xf))));
|
| 1470 |
}
|
| 1471 |
return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG3) | DD4(reg));
|
| 1472 |
}
|
| 1473 |
|
| 1474 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop1(struct sljit_compiler *compiler, int op,
|
| 1475 |
int dst, sljit_w dstw,
|
| 1476 |
int src, sljit_w srcw)
|
| 1477 |
{
|
| 1478 |
int dst_r;
|
| 1479 |
|
| 1480 |
CHECK_ERROR();
|
| 1481 |
check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw);
|
| 1482 |
|
| 1483 |
compiler->cache_arg = 0;
|
| 1484 |
compiler->cache_argw = 0;
|
| 1485 |
|
| 1486 |
if (GET_OPCODE(op) == SLJIT_FCMP) {
|
| 1487 |
if (dst & SLJIT_MEM) {
|
| 1488 |
emit_fop_mem(compiler, 0, TMP_FREG1, dst, dstw);
|
| 1489 |
dst = TMP_FREG1;
|
| 1490 |
}
|
| 1491 |
if (src & SLJIT_MEM) {
|
| 1492 |
emit_fop_mem(compiler, 0, TMP_FREG2, src, srcw);
|
| 1493 |
src = TMP_FREG2;
|
| 1494 |
}
|
| 1495 |
FAIL_IF(push_inst32(compiler, VCMP_F64 | DD4(dst) | DM4(src)));
|
| 1496 |
return push_inst32(compiler, VMRS);
|
| 1497 |
}
|
| 1498 |
|
| 1499 |
dst_r = (dst >= SLJIT_FLOAT_REG1 && dst <= SLJIT_FLOAT_REG4) ? dst : TMP_FREG1;
|
| 1500 |
if (src & SLJIT_MEM) {
|
| 1501 |
emit_fop_mem(compiler, 0, dst_r, src, srcw);
|
| 1502 |
src = dst_r;
|
| 1503 |
}
|
| 1504 |
|
| 1505 |
switch (GET_OPCODE(op)) {
|
| 1506 |
case SLJIT_FMOV:
|
| 1507 |
if (src != dst_r)
|
| 1508 |
FAIL_IF(push_inst32(compiler, VMOV_F64 | DD4(dst_r) | DM4(src)));
|
| 1509 |
break;
|
| 1510 |
case SLJIT_FNEG:
|
| 1511 |
FAIL_IF(push_inst32(compiler, VNEG_F64 | DD4(dst_r) | DM4(src)));
|
| 1512 |
break;
|
| 1513 |
case SLJIT_FABS:
|
| 1514 |
FAIL_IF(push_inst32(compiler, VABS_F64 | DD4(dst_r) | DM4(src)));
|
| 1515 |
break;
|
| 1516 |
}
|
| 1517 |
|
| 1518 |
if (dst & SLJIT_MEM)
|
| 1519 |
return emit_fop_mem(compiler, STORE, TMP_FREG1, dst, dstw);
|
| 1520 |
return SLJIT_SUCCESS;
|
| 1521 |
}
|
| 1522 |
|
| 1523 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop2(struct sljit_compiler *compiler, int op,
|
| 1524 |
int dst, sljit_w dstw,
|
| 1525 |
int src1, sljit_w src1w,
|
| 1526 |
int src2, sljit_w src2w)
|
| 1527 |
{
|
| 1528 |
int dst_r;
|
| 1529 |
|
| 1530 |
CHECK_ERROR();
|
| 1531 |
check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w);
|
| 1532 |
|
| 1533 |
compiler->cache_arg = 0;
|
| 1534 |
compiler->cache_argw = 0;
|
| 1535 |
|
| 1536 |
dst_r = (dst >= SLJIT_FLOAT_REG1 && dst <= SLJIT_FLOAT_REG4) ? dst : TMP_FREG1;
|
| 1537 |
if (src1 & SLJIT_MEM) {
|
| 1538 |
emit_fop_mem(compiler, 0, TMP_FREG1, src1, src1w);
|
| 1539 |
src1 = TMP_FREG1;
|
| 1540 |
}
|
| 1541 |
if (src2 & SLJIT_MEM) {
|
| 1542 |
emit_fop_mem(compiler, 0, TMP_FREG2, src2, src2w);
|
| 1543 |
src2 = TMP_FREG2;
|
| 1544 |
}
|
| 1545 |
|
| 1546 |
switch (GET_OPCODE(op)) {
|
| 1547 |
case SLJIT_FADD:
|
| 1548 |
FAIL_IF(push_inst32(compiler, VADD_F64 | DD4(dst_r) | DN4(src1) | DM4(src2)));
|
| 1549 |
break;
|
| 1550 |
case SLJIT_FSUB:
|
| 1551 |
FAIL_IF(push_inst32(compiler, VSUB_F64 | DD4(dst_r) | DN4(src1) | DM4(src2)));
|
| 1552 |
break;
|
| 1553 |
case SLJIT_FMUL:
|
| 1554 |
FAIL_IF(push_inst32(compiler, VMUL_F64 | DD4(dst_r) | DN4(src1) | DM4(src2)));
|
| 1555 |
break;
|
| 1556 |
case SLJIT_FDIV:
|
| 1557 |
FAIL_IF(push_inst32(compiler, VDIV_F64 | DD4(dst_r) | DN4(src1) | DM4(src2)));
|
| 1558 |
break;
|
| 1559 |
}
|
| 1560 |
|
| 1561 |
if (dst & SLJIT_MEM)
|
| 1562 |
return emit_fop_mem(compiler, STORE, TMP_FREG1, dst, dstw);
|
| 1563 |
return SLJIT_SUCCESS;
|
| 1564 |
}
|
| 1565 |
|
| 1566 |
/* --------------------------------------------------------------------- */
|
| 1567 |
/* Other instructions */
|
| 1568 |
/* --------------------------------------------------------------------- */
|
| 1569 |
|
| 1570 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_enter(struct sljit_compiler *compiler, int dst, sljit_w dstw, int args, int temporaries, int generals, int local_size)
|
| 1571 |
{
|
| 1572 |
int size;
|
| 1573 |
|
| 1574 |
CHECK_ERROR();
|
| 1575 |
check_sljit_emit_fast_enter(compiler, dst, dstw, args, temporaries, generals, local_size);
|
| 1576 |
|
| 1577 |
compiler->temporaries = temporaries;
|
| 1578 |
compiler->generals = generals;
|
| 1579 |
|
| 1580 |
size = (3 + generals) * sizeof(sljit_uw);
|
| 1581 |
local_size += size;
|
| 1582 |
local_size = (local_size + 7) & ~7;
|
| 1583 |
local_size -= size;
|
| 1584 |
compiler->local_size = local_size;
|
| 1585 |
|
| 1586 |
if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS)
|
| 1587 |
return push_inst16(compiler, MOV | SET_REGS44(dst, TMP_REG3));
|
| 1588 |
else if (dst & SLJIT_MEM) {
|
| 1589 |
if (getput_arg_fast(compiler, WORD_SIZE | STORE, TMP_REG3, dst, dstw))
|
| 1590 |
return compiler->error;
|
| 1591 |
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG2, TMP_REG3)));
|
| 1592 |
compiler->cache_arg = 0;
|
| 1593 |
compiler->cache_argw = 0;
|
| 1594 |
return getput_arg(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw, 0, 0);
|
| 1595 |
}
|
| 1596 |
|
| 1597 |
return SLJIT_SUCCESS;
|
| 1598 |
}
|
| 1599 |
|
| 1600 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compiler, int src, sljit_w srcw)
|
| 1601 |
{
|
| 1602 |
CHECK_ERROR();
|
| 1603 |
check_sljit_emit_fast_return(compiler, src, srcw);
|
| 1604 |
|
| 1605 |
if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
|
| 1606 |
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG3, src)));
|
| 1607 |
else if (src & SLJIT_MEM) {
|
| 1608 |
if (getput_arg_fast(compiler, WORD_SIZE, TMP_REG3, src, srcw))
|
| 1609 |
FAIL_IF(compiler->error);
|
| 1610 |
else {
|
| 1611 |
compiler->cache_arg = 0;
|
| 1612 |
compiler->cache_argw = 0;
|
| 1613 |
FAIL_IF(getput_arg(compiler, WORD_SIZE, TMP_REG2, src, srcw, 0, 0));
|
| 1614 |
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG3, TMP_REG2)));
|
| 1615 |
}
|
| 1616 |
}
|
| 1617 |
else if (src & SLJIT_IMM)
|
| 1618 |
FAIL_IF(load_immediate(compiler, TMP_REG3, srcw));
|
| 1619 |
return push_inst16(compiler, BLX | RN3(TMP_REG3));
|
| 1620 |
}
|
| 1621 |
|
| 1622 |
/* --------------------------------------------------------------------- */
|
| 1623 |
/* Conditional instructions */
|
| 1624 |
/* --------------------------------------------------------------------- */
|
| 1625 |
|
| 1626 |
static sljit_uw get_cc(int type)
|
| 1627 |
{
|
| 1628 |
switch (type) {
|
| 1629 |
case SLJIT_C_EQUAL:
|
| 1630 |
case SLJIT_C_MUL_NOT_OVERFLOW:
|
| 1631 |
case SLJIT_C_FLOAT_EQUAL:
|
| 1632 |
return 0x0;
|
| 1633 |
|
| 1634 |
case SLJIT_C_NOT_EQUAL:
|
| 1635 |
case SLJIT_C_MUL_OVERFLOW:
|
| 1636 |
case SLJIT_C_FLOAT_NOT_EQUAL:
|
| 1637 |
return 0x1;
|
| 1638 |
|
| 1639 |
case SLJIT_C_LESS:
|
| 1640 |
case SLJIT_C_FLOAT_LESS:
|
| 1641 |
return 0x3;
|
| 1642 |
|
| 1643 |
case SLJIT_C_GREATER_EQUAL:
|
| 1644 |
case SLJIT_C_FLOAT_GREATER_EQUAL:
|
| 1645 |
return 0x2;
|
| 1646 |
|
| 1647 |
case SLJIT_C_GREATER:
|
| 1648 |
case SLJIT_C_FLOAT_GREATER:
|
| 1649 |
return 0x8;
|
| 1650 |
|
| 1651 |
case SLJIT_C_LESS_EQUAL:
|
| 1652 |
case SLJIT_C_FLOAT_LESS_EQUAL:
|
| 1653 |
return 0x9;
|
| 1654 |
|
| 1655 |
case SLJIT_C_SIG_LESS:
|
| 1656 |
return 0xb;
|
| 1657 |
|
| 1658 |
case SLJIT_C_SIG_GREATER_EQUAL:
|
| 1659 |
return 0xa;
|
| 1660 |
|
| 1661 |
case SLJIT_C_SIG_GREATER:
|
| 1662 |
return 0xc;
|
| 1663 |
|
| 1664 |
case SLJIT_C_SIG_LESS_EQUAL:
|
| 1665 |
return 0xd;
|
| 1666 |
|
| 1667 |
case SLJIT_C_OVERFLOW:
|
| 1668 |
case SLJIT_C_FLOAT_NAN:
|
| 1669 |
return 0x6;
|
| 1670 |
|
| 1671 |
case SLJIT_C_NOT_OVERFLOW:
|
| 1672 |
case SLJIT_C_FLOAT_NOT_NAN:
|
| 1673 |
return 0x7;
|
| 1674 |
|
| 1675 |
default: /* SLJIT_JUMP */
|
| 1676 |
return 0xe;
|
| 1677 |
}
|
| 1678 |
}
|
| 1679 |
|
| 1680 |
SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
|
| 1681 |
{
|
| 1682 |
struct sljit_label *label;
|
| 1683 |
|
| 1684 |
CHECK_ERROR_PTR();
|
| 1685 |
check_sljit_emit_label(compiler);
|
| 1686 |
|
| 1687 |
if (compiler->last_label && compiler->last_label->size == compiler->size)
|
| 1688 |
return compiler->last_label;
|
| 1689 |
|
| 1690 |
label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
|
| 1691 |
PTR_FAIL_IF(!label);
|
| 1692 |
set_label(label, compiler);
|
| 1693 |
return label;
|
| 1694 |
}
|
| 1695 |
|
| 1696 |
SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, int type)
|
| 1697 |
{
|
| 1698 |
struct sljit_jump *jump;
|
| 1699 |
int cc;
|
| 1700 |
|
| 1701 |
CHECK_ERROR_PTR();
|
| 1702 |
check_sljit_emit_jump(compiler, type);
|
| 1703 |
|
| 1704 |
jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
|
| 1705 |
PTR_FAIL_IF(!jump);
|
| 1706 |
set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
|
| 1707 |
type &= 0xff;
|
| 1708 |
|
| 1709 |
/* In ARM, we don't need to touch the arguments. */
|
| 1710 |
PTR_FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
|
| 1711 |
if (type < SLJIT_JUMP) {
|
| 1712 |
jump->flags |= IS_CONDITIONAL;
|
| 1713 |
cc = get_cc(type);
|
| 1714 |
jump->flags |= cc << 8;
|
| 1715 |
PTR_FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
|
| 1716 |
}
|
| 1717 |
|
| 1718 |
jump->addr = compiler->size;
|
| 1719 |
if (type <= SLJIT_JUMP)
|
| 1720 |
PTR_FAIL_IF(push_inst16(compiler, BX | RN3(TMP_REG1)));
|
| 1721 |
else {
|
| 1722 |
jump->flags |= IS_BL;
|
| 1723 |
PTR_FAIL_IF(push_inst16(compiler, BLX | RN3(TMP_REG1)));
|
| 1724 |
}
|
| 1725 |
|
| 1726 |
return jump;
|
| 1727 |
}
|
| 1728 |
|
| 1729 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_ijump(struct sljit_compiler *compiler, int type, int src, sljit_w srcw)
|
| 1730 |
{
|
| 1731 |
struct sljit_jump *jump;
|
| 1732 |
|
| 1733 |
CHECK_ERROR();
|
| 1734 |
check_sljit_emit_ijump(compiler, type, src, srcw);
|
| 1735 |
|
| 1736 |
/* In ARM, we don't need to touch the arguments. */
|
| 1737 |
if (src & SLJIT_IMM) {
|
| 1738 |
jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
|
| 1739 |
FAIL_IF(!jump);
|
| 1740 |
set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
|
| 1741 |
jump->u.target = srcw;
|
| 1742 |
|
| 1743 |
FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
|
| 1744 |
jump->addr = compiler->size;
|
| 1745 |
FAIL_IF(push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(TMP_REG1)));
|
| 1746 |
}
|
| 1747 |
else {
|
| 1748 |
if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS)
|
| 1749 |
return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(src));
|
| 1750 |
|
| 1751 |
FAIL_IF(emit_op_mem(compiler, WORD_SIZE, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, src, srcw));
|
| 1752 |
if (type >= SLJIT_FAST_CALL)
|
| 1753 |
return push_inst16(compiler, BLX | RN3(TMP_REG1));
|
| 1754 |
}
|
| 1755 |
return SLJIT_SUCCESS;
|
| 1756 |
}
|
| 1757 |
|
| 1758 |
SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_cond_value(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, int type)
|
| 1759 |
{
|
| 1760 |
int dst_r;
|
| 1761 |
sljit_uw cc;
|
| 1762 |
|
| 1763 |
CHECK_ERROR();
|
| 1764 |
check_sljit_emit_cond_value(compiler, op, dst, dstw, type);
|
| 1765 |
|
| 1766 |
if (dst == SLJIT_UNUSED)
|
| 1767 |
return SLJIT_SUCCESS;
|
| 1768 |
|
| 1769 |
cc = get_cc(type);
|
| 1770 |
if (GET_OPCODE(op) == SLJIT_OR && dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) {
|
| 1771 |
FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
|
| 1772 |
FAIL_IF(push_inst32(compiler, ORRI | RN4(dst) | RD4(dst) | 0x1));
|
| 1773 |
if (op & SLJIT_SET_E) {
|
| 1774 |
if (reg_map[dst] <= 7)
|
| 1775 |
return push_inst16(compiler, ORRS | RD3(dst) | RN3(dst));
|
| 1776 |
return push_inst32(compiler, ORR_W | SET_FLAGS | RD4(TMP_REG1) | RN4(dst) | RM4(dst));
|
| 1777 |
}
|
| 1778 |
return SLJIT_SUCCESS;
|
| 1779 |
}
|
| 1780 |
|
| 1781 |
dst_r = TMP_REG2;
|
| 1782 |
if (op == SLJIT_MOV && dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS && reg_map[dst] <= 7)
|
| 1783 |
dst_r = dst;
|
| 1784 |
|
| 1785 |
FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4));
|
| 1786 |
FAIL_IF(push_inst16(compiler, MOVSI | 0x1 | RDN3(dst_r)));
|
| 1787 |
FAIL_IF(push_inst16(compiler, MOVSI | 0x0 | RDN3(dst_r)));
|
| 1788 |
|
| 1789 |
if (dst_r == TMP_REG2) {
|
| 1790 |
if (GET_OPCODE(op) == SLJIT_OR) {
|
| 1791 |
#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
|
| 1792 |
compiler->skip_checks = 1;
|
| 1793 |
#endif
|
| 1794 |
return sljit_emit_op2(compiler, op, dst, dstw, dst, dstw, TMP_REG2, 0);
|
| 1795 |
}
|
| 1796 |
if (dst & SLJIT_MEM)
|
| 1797 |
return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw);
|
| 1798 |
else
|
| 1799 |
return push_inst16(compiler, MOV | SET_REGS44(dst, TMP_REG2));
|
| 1800 |
}
|
| 1801 |
|
| 1802 |
return SLJIT_SUCCESS;
|
| 1803 |
}
|
| 1804 |
|
| 1805 |
SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, int dst, sljit_w dstw, sljit_w init_value)
|
| 1806 |
{
|
| 1807 |
struct sljit_const *const_;
|
| 1808 |
int dst_r;
|
| 1809 |
|
| 1810 |
CHECK_ERROR_PTR();
|
| 1811 |
check_sljit_emit_const(compiler, dst, dstw, init_value);
|
| 1812 |
|
| 1813 |
const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
|
| 1814 |
PTR_FAIL_IF(!const_);
|
| 1815 |
set_const(const_, compiler);
|
| 1816 |
|
| 1817 |
dst_r = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG1;
|
| 1818 |
PTR_FAIL_IF(emit_imm32_const(compiler, dst_r, init_value));
|
| 1819 |
|
| 1820 |
if (dst & SLJIT_MEM)
|
| 1821 |
PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw));
|
| 1822 |
return const_;
|
| 1823 |
}
|
| 1824 |
|
| 1825 |
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr)
|
| 1826 |
{
|
| 1827 |
inline_set_jump_addr(addr, new_addr, 1);
|
| 1828 |
}
|
| 1829 |
|
| 1830 |
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_w new_constant)
|
| 1831 |
{
|
| 1832 |
sljit_uh* inst = (sljit_uh*)addr;
|
| 1833 |
modify_imm32_const(inst, new_constant);
|
| 1834 |
SLJIT_CACHE_FLUSH(inst, inst + 3);
|
| 1835 |
}
|
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