1531 lines
45 KiB
C
1531 lines
45 KiB
C
/*
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* Tiny Code Generator for QEMU
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*
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* Copyright (c) 2008-2009 Arnaud Patard <arnaud.patard@rtp-net.org>
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* Copyright (c) 2009 Aurelien Jarno <aurelien@aurel32.net>
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* Based on i386/tcg-target.c - Copyright (c) 2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#if defined(TCG_TARGET_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
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# define TCG_NEED_BSWAP 0
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#else
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# define TCG_NEED_BSWAP 1
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#endif
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#ifndef NDEBUG
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static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
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"zero",
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"at",
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"v0",
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"v1",
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"a0",
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"a1",
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"a2",
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"a3",
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"t0",
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"t1",
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"t2",
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"t3",
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"t4",
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"t5",
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"t6",
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"t7",
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"s0",
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"s1",
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"s2",
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"s3",
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"s4",
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"s5",
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"s6",
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"s7",
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"t8",
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"t9",
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"k0",
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"k1",
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"gp",
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"sp",
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"fp",
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"ra",
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};
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#endif
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/* check if we really need so many registers :P */
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static const int tcg_target_reg_alloc_order[] = {
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TCG_REG_S0,
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TCG_REG_S1,
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TCG_REG_S2,
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TCG_REG_S3,
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TCG_REG_S4,
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TCG_REG_S5,
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TCG_REG_S6,
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TCG_REG_S7,
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TCG_REG_T1,
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TCG_REG_T2,
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TCG_REG_T3,
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TCG_REG_T4,
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TCG_REG_T5,
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TCG_REG_T6,
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TCG_REG_T7,
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TCG_REG_T8,
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TCG_REG_T9,
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TCG_REG_A0,
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TCG_REG_A1,
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TCG_REG_A2,
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TCG_REG_A3,
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TCG_REG_V0,
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TCG_REG_V1
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};
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static const int tcg_target_call_iarg_regs[4] = {
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TCG_REG_A0,
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TCG_REG_A1,
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TCG_REG_A2,
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TCG_REG_A3
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};
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static const int tcg_target_call_oarg_regs[2] = {
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TCG_REG_V0,
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TCG_REG_V1
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};
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static uint8_t *tb_ret_addr;
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static inline uint32_t reloc_lo16_val (void *pc, tcg_target_long target)
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{
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return target & 0xffff;
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}
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static inline void reloc_lo16 (void *pc, tcg_target_long target)
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{
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*(uint32_t *) pc = (*(uint32_t *) pc & ~0xffff)
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| reloc_lo16_val(pc, target);
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}
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static inline uint32_t reloc_hi16_val (void *pc, tcg_target_long target)
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{
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return (target >> 16) & 0xffff;
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}
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static inline void reloc_hi16 (void *pc, tcg_target_long target)
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{
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*(uint32_t *) pc = (*(uint32_t *) pc & ~0xffff)
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| reloc_hi16_val(pc, target);
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}
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static inline uint32_t reloc_pc16_val (void *pc, tcg_target_long target)
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{
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int32_t disp;
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disp = target - (tcg_target_long) pc - 4;
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if (disp != (disp << 14) >> 14) {
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tcg_abort ();
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}
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return (disp >> 2) & 0xffff;
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}
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static inline void reloc_pc16 (void *pc, tcg_target_long target)
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{
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*(uint32_t *) pc = (*(uint32_t *) pc & ~0xffff)
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| reloc_pc16_val(pc, target);
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}
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static inline uint32_t reloc_26_val (void *pc, tcg_target_long target)
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{
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if ((((tcg_target_long)pc + 4) & 0xf0000000) != (target & 0xf0000000)) {
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tcg_abort ();
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}
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return (target >> 2) & 0x3ffffff;
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}
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static inline void reloc_pc26 (void *pc, tcg_target_long target)
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{
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*(uint32_t *) pc = (*(uint32_t *) pc & ~0x3ffffff)
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| reloc_26_val(pc, target);
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}
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static void patch_reloc(uint8_t *code_ptr, int type,
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tcg_target_long value, tcg_target_long addend)
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{
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value += addend;
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switch(type) {
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case R_MIPS_LO16:
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reloc_lo16(code_ptr, value);
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break;
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case R_MIPS_HI16:
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reloc_hi16(code_ptr, value);
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break;
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case R_MIPS_PC16:
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reloc_pc16(code_ptr, value);
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break;
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case R_MIPS_26:
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reloc_pc26(code_ptr, value);
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break;
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default:
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tcg_abort();
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}
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}
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/* maximum number of register used for input function arguments */
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static inline int tcg_target_get_call_iarg_regs_count(int flags)
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{
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return 4;
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}
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/* parse target specific constraints */
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static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
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{
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const char *ct_str;
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ct_str = *pct_str;
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switch(ct_str[0]) {
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case 'r':
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ct->ct |= TCG_CT_REG;
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tcg_regset_set(ct->u.regs, 0xffffffff);
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break;
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case 'C':
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ct->ct |= TCG_CT_REG;
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tcg_regset_clear(ct->u.regs);
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tcg_regset_set_reg(ct->u.regs, TCG_REG_T9);
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break;
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case 'L': /* qemu_ld output arg constraint */
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ct->ct |= TCG_CT_REG;
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tcg_regset_set(ct->u.regs, 0xffffffff);
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_V0);
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break;
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case 'l': /* qemu_ld input arg constraint */
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ct->ct |= TCG_CT_REG;
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tcg_regset_set(ct->u.regs, 0xffffffff);
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#if defined(CONFIG_SOFTMMU)
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_A0);
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#endif
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break;
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case 'S': /* qemu_st constraint */
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ct->ct |= TCG_CT_REG;
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tcg_regset_set(ct->u.regs, 0xffffffff);
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_A0);
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#if defined(CONFIG_SOFTMMU)
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# if TARGET_LONG_BITS == 64
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_A1);
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# endif
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_A2);
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#endif
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break;
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case 'I':
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ct->ct |= TCG_CT_CONST_U16;
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break;
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case 'J':
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ct->ct |= TCG_CT_CONST_S16;
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break;
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case 'Z':
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/* We are cheating a bit here, using the fact that the register
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ZERO is also the register number 0. Hence there is no need
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to check for const_args in each instruction. */
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ct->ct |= TCG_CT_CONST_ZERO;
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break;
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default:
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return -1;
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}
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ct_str++;
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*pct_str = ct_str;
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return 0;
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}
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/* test if a constant matches the constraint */
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static inline int tcg_target_const_match(tcg_target_long val,
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const TCGArgConstraint *arg_ct)
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{
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int ct;
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ct = arg_ct->ct;
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if (ct & TCG_CT_CONST)
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return 1;
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else if ((ct & TCG_CT_CONST_ZERO) && val == 0)
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return 1;
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else if ((ct & TCG_CT_CONST_U16) && val == (uint16_t)val)
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return 1;
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else if ((ct & TCG_CT_CONST_S16) && val == (int16_t)val)
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return 1;
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else
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return 0;
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}
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/* instruction opcodes */
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enum {
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OPC_BEQ = 0x04 << 26,
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OPC_BNE = 0x05 << 26,
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OPC_ADDIU = 0x09 << 26,
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OPC_SLTI = 0x0A << 26,
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OPC_SLTIU = 0x0B << 26,
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OPC_ANDI = 0x0C << 26,
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OPC_ORI = 0x0D << 26,
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OPC_XORI = 0x0E << 26,
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OPC_LUI = 0x0F << 26,
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OPC_LB = 0x20 << 26,
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OPC_LH = 0x21 << 26,
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OPC_LW = 0x23 << 26,
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OPC_LBU = 0x24 << 26,
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OPC_LHU = 0x25 << 26,
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OPC_LWU = 0x27 << 26,
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OPC_SB = 0x28 << 26,
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OPC_SH = 0x29 << 26,
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OPC_SW = 0x2B << 26,
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OPC_SPECIAL = 0x00 << 26,
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OPC_SLL = OPC_SPECIAL | 0x00,
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OPC_SRL = OPC_SPECIAL | 0x02,
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OPC_SRA = OPC_SPECIAL | 0x03,
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OPC_SLLV = OPC_SPECIAL | 0x04,
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OPC_SRLV = OPC_SPECIAL | 0x06,
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OPC_SRAV = OPC_SPECIAL | 0x07,
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OPC_JR = OPC_SPECIAL | 0x08,
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OPC_JALR = OPC_SPECIAL | 0x09,
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OPC_MFHI = OPC_SPECIAL | 0x10,
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OPC_MFLO = OPC_SPECIAL | 0x12,
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OPC_MULT = OPC_SPECIAL | 0x18,
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OPC_MULTU = OPC_SPECIAL | 0x19,
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OPC_DIV = OPC_SPECIAL | 0x1A,
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OPC_DIVU = OPC_SPECIAL | 0x1B,
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OPC_ADDU = OPC_SPECIAL | 0x21,
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OPC_SUBU = OPC_SPECIAL | 0x23,
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OPC_AND = OPC_SPECIAL | 0x24,
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OPC_OR = OPC_SPECIAL | 0x25,
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OPC_XOR = OPC_SPECIAL | 0x26,
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OPC_NOR = OPC_SPECIAL | 0x27,
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OPC_SLT = OPC_SPECIAL | 0x2A,
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OPC_SLTU = OPC_SPECIAL | 0x2B,
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OPC_SPECIAL3 = 0x1f << 26,
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OPC_SEB = OPC_SPECIAL3 | 0x420,
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OPC_SEH = OPC_SPECIAL3 | 0x620,
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};
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/*
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* Type reg
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*/
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static inline void tcg_out_opc_reg(TCGContext *s, int opc, int rd, int rs, int rt)
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{
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int32_t inst;
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inst = opc;
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inst |= (rs & 0x1F) << 21;
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inst |= (rt & 0x1F) << 16;
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inst |= (rd & 0x1F) << 11;
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tcg_out32(s, inst);
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}
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/*
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* Type immediate
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*/
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static inline void tcg_out_opc_imm(TCGContext *s, int opc, int rt, int rs, int imm)
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{
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int32_t inst;
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inst = opc;
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inst |= (rs & 0x1F) << 21;
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inst |= (rt & 0x1F) << 16;
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inst |= (imm & 0xffff);
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tcg_out32(s, inst);
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}
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/*
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* Type branch
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*/
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static inline void tcg_out_opc_br(TCGContext *s, int opc, int rt, int rs)
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{
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/* We need to keep the offset unchanged for retranslation */
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uint16_t offset = (uint16_t)(*(uint32_t *) &s->code_ptr);
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tcg_out_opc_imm(s, opc, rt, rs, offset);
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}
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/*
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* Type sa
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*/
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static inline void tcg_out_opc_sa(TCGContext *s, int opc, int rd, int rt, int sa)
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{
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int32_t inst;
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inst = opc;
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inst |= (rt & 0x1F) << 16;
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inst |= (rd & 0x1F) << 11;
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inst |= (sa & 0x1F) << 6;
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tcg_out32(s, inst);
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}
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static inline void tcg_out_nop(TCGContext *s)
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{
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tcg_out32(s, 0);
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}
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static inline void tcg_out_mov(TCGContext *s, int ret, int arg)
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{
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tcg_out_opc_reg(s, OPC_ADDU, ret, arg, TCG_REG_ZERO);
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}
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static inline void tcg_out_movi(TCGContext *s, TCGType type,
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int reg, int32_t arg)
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{
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if (arg == (int16_t)arg) {
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tcg_out_opc_imm(s, OPC_ADDIU, reg, TCG_REG_ZERO, arg);
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} else if (arg == (uint16_t)arg) {
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tcg_out_opc_imm(s, OPC_ORI, reg, TCG_REG_ZERO, arg);
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} else {
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tcg_out_opc_imm(s, OPC_LUI, reg, 0, arg >> 16);
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tcg_out_opc_imm(s, OPC_ORI, reg, reg, arg & 0xffff);
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}
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}
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static inline void tcg_out_bswap16(TCGContext *s, int ret, int arg)
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{
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/* ret and arg can't be register at */
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if (ret == TCG_REG_AT || arg == TCG_REG_AT) {
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tcg_abort();
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}
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tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8);
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tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, TCG_REG_AT, 0x00ff);
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tcg_out_opc_sa(s, OPC_SLL, ret, arg, 8);
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tcg_out_opc_imm(s, OPC_ANDI, ret, ret, 0xff00);
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tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
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}
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static inline void tcg_out_bswap16s(TCGContext *s, int ret, int arg)
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{
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/* ret and arg can't be register at */
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if (ret == TCG_REG_AT || arg == TCG_REG_AT) {
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tcg_abort();
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}
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tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8);
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tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, TCG_REG_AT, 0xff);
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tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24);
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tcg_out_opc_sa(s, OPC_SRA, ret, ret, 16);
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tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
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}
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static inline void tcg_out_bswap32(TCGContext *s, int ret, int arg)
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{
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/* ret and arg must be different and can't be register at */
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if (ret == arg || ret == TCG_REG_AT || arg == TCG_REG_AT) {
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tcg_abort();
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}
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tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24);
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tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 24);
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tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
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tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, arg, 0xff00);
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tcg_out_opc_sa(s, OPC_SLL, TCG_REG_AT, TCG_REG_AT, 8);
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tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
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tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8);
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tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, TCG_REG_AT, 0xff00);
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tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
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}
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static inline void tcg_out_ext8s(TCGContext *s, int ret, int arg)
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{
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#ifdef _MIPS_ARCH_MIPS32R2
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tcg_out_opc_reg(s, OPC_SEB, ret, 0, arg);
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#else
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tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24);
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tcg_out_opc_sa(s, OPC_SRA, ret, ret, 24);
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#endif
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}
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static inline void tcg_out_ext16s(TCGContext *s, int ret, int arg)
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{
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#ifdef _MIPS_ARCH_MIPS32R2
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tcg_out_opc_reg(s, OPC_SEH, ret, 0, arg);
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#else
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tcg_out_opc_sa(s, OPC_SLL, ret, arg, 16);
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tcg_out_opc_sa(s, OPC_SRA, ret, ret, 16);
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#endif
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}
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static inline void tcg_out_ldst(TCGContext *s, int opc, int arg,
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int arg1, tcg_target_long arg2)
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{
|
|
if (arg2 == (int16_t) arg2) {
|
|
tcg_out_opc_imm(s, opc, arg, arg1, arg2);
|
|
} else {
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, arg2);
|
|
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_AT, TCG_REG_AT, arg1);
|
|
tcg_out_opc_imm(s, opc, arg, TCG_REG_AT, 0);
|
|
}
|
|
}
|
|
|
|
static inline void tcg_out_ld(TCGContext *s, TCGType type, int arg,
|
|
int arg1, tcg_target_long arg2)
|
|
{
|
|
tcg_out_ldst(s, OPC_LW, arg, arg1, arg2);
|
|
}
|
|
|
|
static inline void tcg_out_st(TCGContext *s, TCGType type, int arg,
|
|
int arg1, tcg_target_long arg2)
|
|
{
|
|
tcg_out_ldst(s, OPC_SW, arg, arg1, arg2);
|
|
}
|
|
|
|
static inline void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val)
|
|
{
|
|
if (val == (int16_t)val) {
|
|
tcg_out_opc_imm(s, OPC_ADDIU, reg, reg, val);
|
|
} else {
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, val);
|
|
tcg_out_opc_reg(s, OPC_ADDU, reg, reg, TCG_REG_AT);
|
|
}
|
|
}
|
|
|
|
static void tcg_out_brcond(TCGContext *s, TCGCond cond, int arg1,
|
|
int arg2, int label_index)
|
|
{
|
|
TCGLabel *l = &s->labels[label_index];
|
|
|
|
switch (cond) {
|
|
case TCG_COND_EQ:
|
|
tcg_out_opc_br(s, OPC_BEQ, arg1, arg2);
|
|
break;
|
|
case TCG_COND_NE:
|
|
tcg_out_opc_br(s, OPC_BNE, arg1, arg2);
|
|
break;
|
|
case TCG_COND_LT:
|
|
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg1, arg2);
|
|
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO);
|
|
break;
|
|
case TCG_COND_LTU:
|
|
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg1, arg2);
|
|
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO);
|
|
break;
|
|
case TCG_COND_GE:
|
|
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg1, arg2);
|
|
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO);
|
|
break;
|
|
case TCG_COND_GEU:
|
|
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg1, arg2);
|
|
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO);
|
|
break;
|
|
case TCG_COND_LE:
|
|
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg2, arg1);
|
|
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO);
|
|
break;
|
|
case TCG_COND_LEU:
|
|
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg2, arg1);
|
|
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO);
|
|
break;
|
|
case TCG_COND_GT:
|
|
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg2, arg1);
|
|
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO);
|
|
break;
|
|
case TCG_COND_GTU:
|
|
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg2, arg1);
|
|
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
break;
|
|
}
|
|
if (l->has_value) {
|
|
reloc_pc16(s->code_ptr - 4, l->u.value);
|
|
} else {
|
|
tcg_out_reloc(s, s->code_ptr - 4, R_MIPS_PC16, label_index, 0);
|
|
}
|
|
tcg_out_nop(s);
|
|
}
|
|
|
|
/* XXX: we implement it at the target level to avoid having to
|
|
handle cross basic blocks temporaries */
|
|
static void tcg_out_brcond2(TCGContext *s, TCGCond cond, int arg1,
|
|
int arg2, int arg3, int arg4, int label_index)
|
|
{
|
|
void *label_ptr;
|
|
|
|
switch(cond) {
|
|
case TCG_COND_NE:
|
|
tcg_out_brcond(s, TCG_COND_NE, arg2, arg4, label_index);
|
|
tcg_out_brcond(s, TCG_COND_NE, arg1, arg3, label_index);
|
|
return;
|
|
case TCG_COND_EQ:
|
|
break;
|
|
case TCG_COND_LT:
|
|
case TCG_COND_LE:
|
|
tcg_out_brcond(s, TCG_COND_LT, arg2, arg4, label_index);
|
|
break;
|
|
case TCG_COND_GT:
|
|
case TCG_COND_GE:
|
|
tcg_out_brcond(s, TCG_COND_GT, arg2, arg4, label_index);
|
|
break;
|
|
case TCG_COND_LTU:
|
|
case TCG_COND_LEU:
|
|
tcg_out_brcond(s, TCG_COND_LTU, arg2, arg4, label_index);
|
|
break;
|
|
case TCG_COND_GTU:
|
|
case TCG_COND_GEU:
|
|
tcg_out_brcond(s, TCG_COND_GTU, arg2, arg4, label_index);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
|
|
label_ptr = s->code_ptr;
|
|
tcg_out_opc_br(s, OPC_BNE, arg2, arg4);
|
|
tcg_out_nop(s);
|
|
|
|
switch(cond) {
|
|
case TCG_COND_EQ:
|
|
tcg_out_brcond(s, TCG_COND_EQ, arg1, arg3, label_index);
|
|
break;
|
|
case TCG_COND_LT:
|
|
case TCG_COND_LTU:
|
|
tcg_out_brcond(s, TCG_COND_LTU, arg1, arg3, label_index);
|
|
break;
|
|
case TCG_COND_LE:
|
|
case TCG_COND_LEU:
|
|
tcg_out_brcond(s, TCG_COND_LEU, arg1, arg3, label_index);
|
|
break;
|
|
case TCG_COND_GT:
|
|
case TCG_COND_GTU:
|
|
tcg_out_brcond(s, TCG_COND_GTU, arg1, arg3, label_index);
|
|
break;
|
|
case TCG_COND_GE:
|
|
case TCG_COND_GEU:
|
|
tcg_out_brcond(s, TCG_COND_GEU, arg1, arg3, label_index);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
|
|
reloc_pc16(label_ptr, (tcg_target_long) s->code_ptr);
|
|
}
|
|
|
|
static void tcg_out_setcond(TCGContext *s, TCGCond cond, int ret,
|
|
int arg1, int arg2)
|
|
{
|
|
switch (cond) {
|
|
case TCG_COND_EQ:
|
|
if (arg1 == 0) {
|
|
tcg_out_opc_imm(s, OPC_SLTIU, ret, arg2, 1);
|
|
} else if (arg2 == 0) {
|
|
tcg_out_opc_imm(s, OPC_SLTIU, ret, arg1, 1);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_XOR, ret, arg1, arg2);
|
|
tcg_out_opc_imm(s, OPC_SLTIU, ret, ret, 1);
|
|
}
|
|
break;
|
|
case TCG_COND_NE:
|
|
if (arg1 == 0) {
|
|
tcg_out_opc_reg(s, OPC_SLTU, ret, TCG_REG_ZERO, arg2);
|
|
} else if (arg2 == 0) {
|
|
tcg_out_opc_reg(s, OPC_SLTU, ret, TCG_REG_ZERO, arg1);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_XOR, ret, arg1, arg2);
|
|
tcg_out_opc_reg(s, OPC_SLTU, ret, TCG_REG_ZERO, ret);
|
|
}
|
|
break;
|
|
case TCG_COND_LT:
|
|
tcg_out_opc_reg(s, OPC_SLT, ret, arg1, arg2);
|
|
break;
|
|
case TCG_COND_LTU:
|
|
tcg_out_opc_reg(s, OPC_SLTU, ret, arg1, arg2);
|
|
break;
|
|
case TCG_COND_GE:
|
|
tcg_out_opc_reg(s, OPC_SLT, ret, arg1, arg2);
|
|
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
|
|
break;
|
|
case TCG_COND_GEU:
|
|
tcg_out_opc_reg(s, OPC_SLTU, ret, arg1, arg2);
|
|
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
|
|
break;
|
|
case TCG_COND_LE:
|
|
tcg_out_opc_reg(s, OPC_SLT, ret, arg2, arg1);
|
|
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
|
|
break;
|
|
case TCG_COND_LEU:
|
|
tcg_out_opc_reg(s, OPC_SLTU, ret, arg2, arg1);
|
|
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
|
|
break;
|
|
case TCG_COND_GT:
|
|
tcg_out_opc_reg(s, OPC_SLT, ret, arg2, arg1);
|
|
break;
|
|
case TCG_COND_GTU:
|
|
tcg_out_opc_reg(s, OPC_SLTU, ret, arg2, arg1);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* XXX: we implement it at the target level to avoid having to
|
|
handle cross basic blocks temporaries */
|
|
static void tcg_out_setcond2(TCGContext *s, TCGCond cond, int ret,
|
|
int arg1, int arg2, int arg3, int arg4)
|
|
{
|
|
switch (cond) {
|
|
case TCG_COND_EQ:
|
|
tcg_out_setcond(s, TCG_COND_EQ, TCG_REG_AT, arg2, arg4);
|
|
tcg_out_setcond(s, TCG_COND_EQ, TCG_REG_T0, arg1, arg3);
|
|
tcg_out_opc_reg(s, OPC_AND, ret, TCG_REG_AT, TCG_REG_T0);
|
|
return;
|
|
case TCG_COND_NE:
|
|
tcg_out_setcond(s, TCG_COND_NE, TCG_REG_AT, arg2, arg4);
|
|
tcg_out_setcond(s, TCG_COND_NE, TCG_REG_T0, arg1, arg3);
|
|
tcg_out_opc_reg(s, OPC_OR, ret, TCG_REG_AT, TCG_REG_T0);
|
|
return;
|
|
case TCG_COND_LT:
|
|
case TCG_COND_LE:
|
|
tcg_out_setcond(s, TCG_COND_LT, TCG_REG_AT, arg2, arg4);
|
|
break;
|
|
case TCG_COND_GT:
|
|
case TCG_COND_GE:
|
|
tcg_out_setcond(s, TCG_COND_GT, TCG_REG_AT, arg2, arg4);
|
|
break;
|
|
case TCG_COND_LTU:
|
|
case TCG_COND_LEU:
|
|
tcg_out_setcond(s, TCG_COND_LTU, TCG_REG_AT, arg2, arg4);
|
|
break;
|
|
case TCG_COND_GTU:
|
|
case TCG_COND_GEU:
|
|
tcg_out_setcond(s, TCG_COND_GTU, TCG_REG_AT, arg2, arg4);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
break;
|
|
}
|
|
|
|
tcg_out_setcond(s, TCG_COND_EQ, TCG_REG_T0, arg2, arg4);
|
|
|
|
switch(cond) {
|
|
case TCG_COND_LT:
|
|
case TCG_COND_LTU:
|
|
tcg_out_setcond(s, TCG_COND_LTU, ret, arg1, arg3);
|
|
break;
|
|
case TCG_COND_LE:
|
|
case TCG_COND_LEU:
|
|
tcg_out_setcond(s, TCG_COND_LEU, ret, arg1, arg3);
|
|
break;
|
|
case TCG_COND_GT:
|
|
case TCG_COND_GTU:
|
|
tcg_out_setcond(s, TCG_COND_GTU, ret, arg1, arg3);
|
|
break;
|
|
case TCG_COND_GE:
|
|
case TCG_COND_GEU:
|
|
tcg_out_setcond(s, TCG_COND_GEU, ret, arg1, arg3);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
|
|
tcg_out_opc_reg(s, OPC_AND, ret, ret, TCG_REG_T0);
|
|
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
|
|
}
|
|
|
|
#if defined(CONFIG_SOFTMMU)
|
|
|
|
#include "../../softmmu_defs.h"
|
|
|
|
static void *qemu_ld_helpers[4] = {
|
|
__ldb_mmu,
|
|
__ldw_mmu,
|
|
__ldl_mmu,
|
|
__ldq_mmu,
|
|
};
|
|
|
|
static void *qemu_st_helpers[4] = {
|
|
__stb_mmu,
|
|
__stw_mmu,
|
|
__stl_mmu,
|
|
__stq_mmu,
|
|
};
|
|
#endif
|
|
|
|
static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
|
|
int opc)
|
|
{
|
|
int addr_regl, addr_reg1, addr_meml;
|
|
int data_regl, data_regh, data_reg1, data_reg2;
|
|
int mem_index, s_bits;
|
|
#if defined(CONFIG_SOFTMMU)
|
|
void *label1_ptr, *label2_ptr;
|
|
int sp_args;
|
|
#endif
|
|
#if TARGET_LONG_BITS == 64
|
|
# if defined(CONFIG_SOFTMMU)
|
|
uint8_t *label3_ptr;
|
|
# endif
|
|
int addr_regh, addr_reg2, addr_memh;
|
|
#endif
|
|
data_regl = *args++;
|
|
if (opc == 3)
|
|
data_regh = *args++;
|
|
else
|
|
data_regh = 0;
|
|
addr_regl = *args++;
|
|
#if TARGET_LONG_BITS == 64
|
|
addr_regh = *args++;
|
|
#endif
|
|
mem_index = *args;
|
|
s_bits = opc & 3;
|
|
|
|
if (opc == 3) {
|
|
#if defined(TCG_TARGET_WORDS_BIGENDIAN)
|
|
data_reg1 = data_regh;
|
|
data_reg2 = data_regl;
|
|
#else
|
|
data_reg1 = data_regl;
|
|
data_reg2 = data_regh;
|
|
#endif
|
|
} else {
|
|
data_reg1 = data_regl;
|
|
data_reg2 = 0;
|
|
}
|
|
#if TARGET_LONG_BITS == 64
|
|
# if defined(TCG_TARGET_WORDS_BIGENDIAN)
|
|
addr_reg1 = addr_regh;
|
|
addr_reg2 = addr_regl;
|
|
addr_memh = 0;
|
|
addr_meml = 4;
|
|
# else
|
|
addr_reg1 = addr_regl;
|
|
addr_reg2 = addr_regh;
|
|
addr_memh = 4;
|
|
addr_meml = 0;
|
|
# endif
|
|
#else
|
|
addr_reg1 = addr_regl;
|
|
addr_meml = 0;
|
|
#endif
|
|
|
|
#if defined(CONFIG_SOFTMMU)
|
|
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_A0, addr_regl, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS);
|
|
tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_A0, TCG_REG_A0, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
|
|
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, TCG_AREG0);
|
|
tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0,
|
|
offsetof(CPUState, tlb_table[mem_index][0].addr_read) + addr_meml);
|
|
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T0, TARGET_PAGE_MASK | ((1 << s_bits) - 1));
|
|
tcg_out_opc_reg(s, OPC_AND, TCG_REG_T0, TCG_REG_T0, addr_regl);
|
|
|
|
# if TARGET_LONG_BITS == 64
|
|
label3_ptr = s->code_ptr;
|
|
tcg_out_opc_br(s, OPC_BNE, TCG_REG_T0, TCG_REG_AT);
|
|
tcg_out_nop(s);
|
|
|
|
tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0,
|
|
offsetof(CPUState, tlb_table[mem_index][0].addr_read) + addr_memh);
|
|
|
|
label1_ptr = s->code_ptr;
|
|
tcg_out_opc_br(s, OPC_BEQ, addr_regh, TCG_REG_AT);
|
|
tcg_out_nop(s);
|
|
|
|
reloc_pc16(label3_ptr, (tcg_target_long) s->code_ptr);
|
|
# else
|
|
label1_ptr = s->code_ptr;
|
|
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_T0, TCG_REG_AT);
|
|
tcg_out_nop(s);
|
|
# endif
|
|
|
|
/* slow path */
|
|
sp_args = TCG_REG_A0;
|
|
tcg_out_mov(s, sp_args++, addr_reg1);
|
|
# if TARGET_LONG_BITS == 64
|
|
tcg_out_mov(s, sp_args++, addr_reg2);
|
|
# endif
|
|
tcg_out_movi(s, TCG_TYPE_I32, sp_args++, mem_index);
|
|
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T9, (tcg_target_long)qemu_ld_helpers[s_bits]);
|
|
tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_REG_T9, 0);
|
|
tcg_out_nop(s);
|
|
|
|
switch(opc) {
|
|
case 0:
|
|
tcg_out_opc_imm(s, OPC_ANDI, data_reg1, TCG_REG_V0, 0xff);
|
|
break;
|
|
case 0 | 4:
|
|
tcg_out_ext8s(s, data_reg1, TCG_REG_V0);
|
|
break;
|
|
case 1:
|
|
tcg_out_opc_imm(s, OPC_ANDI, data_reg1, TCG_REG_V0, 0xffff);
|
|
break;
|
|
case 1 | 4:
|
|
tcg_out_ext16s(s, data_reg1, TCG_REG_V0);
|
|
break;
|
|
case 2:
|
|
tcg_out_mov(s, data_reg1, TCG_REG_V0);
|
|
break;
|
|
case 3:
|
|
tcg_out_mov(s, data_reg2, TCG_REG_V1);
|
|
tcg_out_mov(s, data_reg1, TCG_REG_V0);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
|
|
label2_ptr = s->code_ptr;
|
|
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_ZERO, TCG_REG_ZERO);
|
|
tcg_out_nop(s);
|
|
|
|
/* label1: fast path */
|
|
reloc_pc16(label1_ptr, (tcg_target_long) s->code_ptr);
|
|
|
|
tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0,
|
|
offsetof(CPUState, tlb_table[mem_index][0].addend));
|
|
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_V0, TCG_REG_A0, addr_regl);
|
|
#else
|
|
if (GUEST_BASE == (int16_t)GUEST_BASE) {
|
|
tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_V0, addr_regl, GUEST_BASE);
|
|
} else {
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_V0, GUEST_BASE);
|
|
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_V0, TCG_REG_V0, addr_regl);
|
|
}
|
|
#endif
|
|
|
|
switch(opc) {
|
|
case 0:
|
|
tcg_out_opc_imm(s, OPC_LBU, data_reg1, TCG_REG_V0, 0);
|
|
break;
|
|
case 0 | 4:
|
|
tcg_out_opc_imm(s, OPC_LB, data_reg1, TCG_REG_V0, 0);
|
|
break;
|
|
case 1:
|
|
if (TCG_NEED_BSWAP) {
|
|
tcg_out_opc_imm(s, OPC_LHU, TCG_REG_T0, TCG_REG_V0, 0);
|
|
tcg_out_bswap16(s, data_reg1, TCG_REG_T0);
|
|
} else {
|
|
tcg_out_opc_imm(s, OPC_LHU, data_reg1, TCG_REG_V0, 0);
|
|
}
|
|
break;
|
|
case 1 | 4:
|
|
if (TCG_NEED_BSWAP) {
|
|
tcg_out_opc_imm(s, OPC_LHU, TCG_REG_T0, TCG_REG_V0, 0);
|
|
tcg_out_bswap16s(s, data_reg1, TCG_REG_T0);
|
|
} else {
|
|
tcg_out_opc_imm(s, OPC_LH, data_reg1, TCG_REG_V0, 0);
|
|
}
|
|
break;
|
|
case 2:
|
|
if (TCG_NEED_BSWAP) {
|
|
tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, TCG_REG_V0, 0);
|
|
tcg_out_bswap32(s, data_reg1, TCG_REG_T0);
|
|
} else {
|
|
tcg_out_opc_imm(s, OPC_LW, data_reg1, TCG_REG_V0, 0);
|
|
}
|
|
break;
|
|
case 3:
|
|
if (TCG_NEED_BSWAP) {
|
|
tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, TCG_REG_V0, 4);
|
|
tcg_out_bswap32(s, data_reg1, TCG_REG_T0);
|
|
tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, TCG_REG_V0, 0);
|
|
tcg_out_bswap32(s, data_reg2, TCG_REG_T0);
|
|
} else {
|
|
tcg_out_opc_imm(s, OPC_LW, data_reg1, TCG_REG_V0, 0);
|
|
tcg_out_opc_imm(s, OPC_LW, data_reg2, TCG_REG_V0, 4);
|
|
}
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
|
|
#if defined(CONFIG_SOFTMMU)
|
|
reloc_pc16(label2_ptr, (tcg_target_long) s->code_ptr);
|
|
#endif
|
|
}
|
|
|
|
static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
|
|
int opc)
|
|
{
|
|
int addr_regl, addr_reg1, addr_meml;
|
|
int data_regl, data_regh, data_reg1, data_reg2;
|
|
int mem_index, s_bits;
|
|
#if defined(CONFIG_SOFTMMU)
|
|
uint8_t *label1_ptr, *label2_ptr;
|
|
int sp_args;
|
|
#endif
|
|
#if TARGET_LONG_BITS == 64
|
|
# if defined(CONFIG_SOFTMMU)
|
|
uint8_t *label3_ptr;
|
|
# endif
|
|
int addr_regh, addr_reg2, addr_memh;
|
|
#endif
|
|
|
|
data_regl = *args++;
|
|
if (opc == 3) {
|
|
data_regh = *args++;
|
|
#if defined(TCG_TARGET_WORDS_BIGENDIAN)
|
|
data_reg1 = data_regh;
|
|
data_reg2 = data_regl;
|
|
#else
|
|
data_reg1 = data_regl;
|
|
data_reg2 = data_regh;
|
|
#endif
|
|
} else {
|
|
data_reg1 = data_regl;
|
|
data_reg2 = 0;
|
|
data_regh = 0;
|
|
}
|
|
addr_regl = *args++;
|
|
#if TARGET_LONG_BITS == 64
|
|
addr_regh = *args++;
|
|
# if defined(TCG_TARGET_WORDS_BIGENDIAN)
|
|
addr_reg1 = addr_regh;
|
|
addr_reg2 = addr_regl;
|
|
addr_memh = 0;
|
|
addr_meml = 4;
|
|
# else
|
|
addr_reg1 = addr_regl;
|
|
addr_reg2 = addr_regh;
|
|
addr_memh = 4;
|
|
addr_meml = 0;
|
|
# endif
|
|
#else
|
|
addr_reg1 = addr_regl;
|
|
addr_meml = 0;
|
|
#endif
|
|
mem_index = *args;
|
|
s_bits = opc;
|
|
|
|
#if defined(CONFIG_SOFTMMU)
|
|
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_A0, addr_regl, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS);
|
|
tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_A0, TCG_REG_A0, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
|
|
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, TCG_AREG0);
|
|
tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0,
|
|
offsetof(CPUState, tlb_table[mem_index][0].addr_write) + addr_meml);
|
|
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T0, TARGET_PAGE_MASK | ((1 << s_bits) - 1));
|
|
tcg_out_opc_reg(s, OPC_AND, TCG_REG_T0, TCG_REG_T0, addr_regl);
|
|
|
|
# if TARGET_LONG_BITS == 64
|
|
label3_ptr = s->code_ptr;
|
|
tcg_out_opc_br(s, OPC_BNE, TCG_REG_T0, TCG_REG_AT);
|
|
tcg_out_nop(s);
|
|
|
|
tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0,
|
|
offsetof(CPUState, tlb_table[mem_index][0].addr_write) + addr_memh);
|
|
|
|
label1_ptr = s->code_ptr;
|
|
tcg_out_opc_br(s, OPC_BEQ, addr_regh, TCG_REG_AT);
|
|
tcg_out_nop(s);
|
|
|
|
reloc_pc16(label3_ptr, (tcg_target_long) s->code_ptr);
|
|
# else
|
|
label1_ptr = s->code_ptr;
|
|
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_T0, TCG_REG_AT);
|
|
tcg_out_nop(s);
|
|
# endif
|
|
|
|
/* slow path */
|
|
sp_args = TCG_REG_A0;
|
|
tcg_out_mov(s, sp_args++, addr_reg1);
|
|
# if TARGET_LONG_BITS == 64
|
|
tcg_out_mov(s, sp_args++, addr_reg2);
|
|
# endif
|
|
switch(opc) {
|
|
case 0:
|
|
tcg_out_opc_imm(s, OPC_ANDI, sp_args++, data_reg1, 0xff);
|
|
break;
|
|
case 1:
|
|
tcg_out_opc_imm(s, OPC_ANDI, sp_args++, data_reg1, 0xffff);
|
|
break;
|
|
case 2:
|
|
tcg_out_mov(s, sp_args++, data_reg1);
|
|
break;
|
|
case 3:
|
|
sp_args = (sp_args + 1) & ~1;
|
|
tcg_out_mov(s, sp_args++, data_reg1);
|
|
tcg_out_mov(s, sp_args++, data_reg2);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
if (sp_args > TCG_REG_A3) {
|
|
/* Push mem_index on the stack */
|
|
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_AT, mem_index);
|
|
tcg_out_st(s, TCG_TYPE_I32, TCG_REG_AT, TCG_REG_SP, 16);
|
|
} else {
|
|
tcg_out_movi(s, TCG_TYPE_I32, sp_args, mem_index);
|
|
}
|
|
|
|
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T9, (tcg_target_long)qemu_st_helpers[s_bits]);
|
|
tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_REG_T9, 0);
|
|
tcg_out_nop(s);
|
|
|
|
label2_ptr = s->code_ptr;
|
|
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_ZERO, TCG_REG_ZERO);
|
|
tcg_out_nop(s);
|
|
|
|
/* label1: fast path */
|
|
reloc_pc16(label1_ptr, (tcg_target_long) s->code_ptr);
|
|
|
|
tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0,
|
|
offsetof(CPUState, tlb_table[mem_index][0].addend));
|
|
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, addr_regl);
|
|
#else
|
|
if (GUEST_BASE == (int16_t)GUEST_BASE) {
|
|
tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_A0, addr_regl, GUEST_BASE);
|
|
} else {
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A0, GUEST_BASE);
|
|
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, addr_regl);
|
|
}
|
|
|
|
#endif
|
|
|
|
switch(opc) {
|
|
case 0:
|
|
tcg_out_opc_imm(s, OPC_SB, data_reg1, TCG_REG_A0, 0);
|
|
break;
|
|
case 1:
|
|
if (TCG_NEED_BSWAP) {
|
|
tcg_out_bswap16(s, TCG_REG_T0, data_reg1);
|
|
tcg_out_opc_imm(s, OPC_SH, TCG_REG_T0, TCG_REG_A0, 0);
|
|
} else {
|
|
tcg_out_opc_imm(s, OPC_SH, data_reg1, TCG_REG_A0, 0);
|
|
}
|
|
break;
|
|
case 2:
|
|
if (TCG_NEED_BSWAP) {
|
|
tcg_out_bswap32(s, TCG_REG_T0, data_reg1);
|
|
tcg_out_opc_imm(s, OPC_SW, TCG_REG_T0, TCG_REG_A0, 0);
|
|
} else {
|
|
tcg_out_opc_imm(s, OPC_SW, data_reg1, TCG_REG_A0, 0);
|
|
}
|
|
break;
|
|
case 3:
|
|
if (TCG_NEED_BSWAP) {
|
|
tcg_out_bswap32(s, TCG_REG_T0, data_reg2);
|
|
tcg_out_opc_imm(s, OPC_SW, TCG_REG_T0, TCG_REG_A0, 0);
|
|
tcg_out_bswap32(s, TCG_REG_T0, data_reg1);
|
|
tcg_out_opc_imm(s, OPC_SW, TCG_REG_T0, TCG_REG_A0, 4);
|
|
} else {
|
|
tcg_out_opc_imm(s, OPC_SW, data_reg1, TCG_REG_A0, 0);
|
|
tcg_out_opc_imm(s, OPC_SW, data_reg2, TCG_REG_A0, 4);
|
|
}
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
|
|
#if defined(CONFIG_SOFTMMU)
|
|
reloc_pc16(label2_ptr, (tcg_target_long) s->code_ptr);
|
|
#endif
|
|
}
|
|
|
|
static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
|
|
const TCGArg *args, const int *const_args)
|
|
{
|
|
switch(opc) {
|
|
case INDEX_op_exit_tb:
|
|
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_V0, args[0]);
|
|
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_AT, (tcg_target_long)tb_ret_addr);
|
|
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_AT, 0);
|
|
tcg_out_nop(s);
|
|
break;
|
|
case INDEX_op_goto_tb:
|
|
if (s->tb_jmp_offset) {
|
|
/* direct jump method */
|
|
tcg_abort();
|
|
} else {
|
|
/* indirect jump method */
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, (tcg_target_long)(s->tb_next + args[0]));
|
|
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_AT, TCG_REG_AT, 0);
|
|
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_AT, 0);
|
|
}
|
|
tcg_out_nop(s);
|
|
s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
|
|
break;
|
|
case INDEX_op_call:
|
|
tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, args[0], 0);
|
|
tcg_out_nop(s);
|
|
break;
|
|
case INDEX_op_jmp:
|
|
tcg_out_opc_reg(s, OPC_JR, 0, args[0], 0);
|
|
tcg_out_nop(s);
|
|
break;
|
|
case INDEX_op_br:
|
|
tcg_out_brcond(s, TCG_COND_EQ, TCG_REG_ZERO, TCG_REG_ZERO, args[0]);
|
|
break;
|
|
|
|
case INDEX_op_mov_i32:
|
|
tcg_out_mov(s, args[0], args[1]);
|
|
break;
|
|
case INDEX_op_movi_i32:
|
|
tcg_out_movi(s, TCG_TYPE_I32, args[0], args[1]);
|
|
break;
|
|
|
|
case INDEX_op_ld8u_i32:
|
|
tcg_out_ldst(s, OPC_LBU, args[0], args[1], args[2]);
|
|
break;
|
|
case INDEX_op_ld8s_i32:
|
|
tcg_out_ldst(s, OPC_LB, args[0], args[1], args[2]);
|
|
break;
|
|
case INDEX_op_ld16u_i32:
|
|
tcg_out_ldst(s, OPC_LHU, args[0], args[1], args[2]);
|
|
break;
|
|
case INDEX_op_ld16s_i32:
|
|
tcg_out_ldst(s, OPC_LH, args[0], args[1], args[2]);
|
|
break;
|
|
case INDEX_op_ld_i32:
|
|
tcg_out_ldst(s, OPC_LW, args[0], args[1], args[2]);
|
|
break;
|
|
case INDEX_op_st8_i32:
|
|
tcg_out_ldst(s, OPC_SB, args[0], args[1], args[2]);
|
|
break;
|
|
case INDEX_op_st16_i32:
|
|
tcg_out_ldst(s, OPC_SH, args[0], args[1], args[2]);
|
|
break;
|
|
case INDEX_op_st_i32:
|
|
tcg_out_ldst(s, OPC_SW, args[0], args[1], args[2]);
|
|
break;
|
|
|
|
case INDEX_op_add_i32:
|
|
if (const_args[2]) {
|
|
tcg_out_opc_imm(s, OPC_ADDIU, args[0], args[1], args[2]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_ADDU, args[0], args[1], args[2]);
|
|
}
|
|
break;
|
|
case INDEX_op_add2_i32:
|
|
if (const_args[4]) {
|
|
tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_AT, args[2], args[4]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_AT, args[2], args[4]);
|
|
}
|
|
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_T0, TCG_REG_AT, args[2]);
|
|
if (const_args[5]) {
|
|
tcg_out_opc_imm(s, OPC_ADDIU, args[1], args[3], args[5]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_ADDU, args[1], args[3], args[5]);
|
|
}
|
|
tcg_out_opc_reg(s, OPC_ADDU, args[1], args[1], TCG_REG_T0);
|
|
tcg_out_mov(s, args[0], TCG_REG_AT);
|
|
break;
|
|
case INDEX_op_sub_i32:
|
|
if (const_args[2]) {
|
|
tcg_out_opc_imm(s, OPC_ADDIU, args[0], args[1], -args[2]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_SUBU, args[0], args[1], args[2]);
|
|
}
|
|
break;
|
|
case INDEX_op_sub2_i32:
|
|
if (const_args[4]) {
|
|
tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_AT, args[2], -args[4]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_SUBU, TCG_REG_AT, args[2], args[4]);
|
|
}
|
|
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_T0, args[2], TCG_REG_AT);
|
|
if (const_args[5]) {
|
|
tcg_out_opc_imm(s, OPC_ADDIU, args[1], args[3], -args[5]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_SUBU, args[1], args[3], args[5]);
|
|
}
|
|
tcg_out_opc_reg(s, OPC_SUBU, args[1], args[1], TCG_REG_T0);
|
|
tcg_out_mov(s, args[0], TCG_REG_AT);
|
|
break;
|
|
case INDEX_op_mul_i32:
|
|
tcg_out_opc_reg(s, OPC_MULT, 0, args[1], args[2]);
|
|
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0);
|
|
break;
|
|
case INDEX_op_mulu2_i32:
|
|
tcg_out_opc_reg(s, OPC_MULTU, 0, args[2], args[3]);
|
|
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0);
|
|
tcg_out_opc_reg(s, OPC_MFHI, args[1], 0, 0);
|
|
break;
|
|
case INDEX_op_div_i32:
|
|
tcg_out_opc_reg(s, OPC_DIV, 0, args[1], args[2]);
|
|
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0);
|
|
break;
|
|
case INDEX_op_divu_i32:
|
|
tcg_out_opc_reg(s, OPC_DIVU, 0, args[1], args[2]);
|
|
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0);
|
|
break;
|
|
case INDEX_op_rem_i32:
|
|
tcg_out_opc_reg(s, OPC_DIV, 0, args[1], args[2]);
|
|
tcg_out_opc_reg(s, OPC_MFHI, args[0], 0, 0);
|
|
break;
|
|
case INDEX_op_remu_i32:
|
|
tcg_out_opc_reg(s, OPC_DIVU, 0, args[1], args[2]);
|
|
tcg_out_opc_reg(s, OPC_MFHI, args[0], 0, 0);
|
|
break;
|
|
|
|
case INDEX_op_and_i32:
|
|
if (const_args[2]) {
|
|
tcg_out_opc_imm(s, OPC_ANDI, args[0], args[1], args[2]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_AND, args[0], args[1], args[2]);
|
|
}
|
|
break;
|
|
case INDEX_op_or_i32:
|
|
if (const_args[2]) {
|
|
tcg_out_opc_imm(s, OPC_ORI, args[0], args[1], args[2]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_OR, args[0], args[1], args[2]);
|
|
}
|
|
break;
|
|
case INDEX_op_nor_i32:
|
|
tcg_out_opc_reg(s, OPC_NOR, args[0], args[1], args[2]);
|
|
break;
|
|
case INDEX_op_not_i32:
|
|
tcg_out_opc_reg(s, OPC_NOR, args[0], TCG_REG_ZERO, args[1]);
|
|
break;
|
|
case INDEX_op_xor_i32:
|
|
if (const_args[2]) {
|
|
tcg_out_opc_imm(s, OPC_XORI, args[0], args[1], args[2]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_XOR, args[0], args[1], args[2]);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_sar_i32:
|
|
if (const_args[2]) {
|
|
tcg_out_opc_sa(s, OPC_SRA, args[0], args[1], args[2]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_SRAV, args[0], args[2], args[1]);
|
|
}
|
|
break;
|
|
case INDEX_op_shl_i32:
|
|
if (const_args[2]) {
|
|
tcg_out_opc_sa(s, OPC_SLL, args[0], args[1], args[2]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_SLLV, args[0], args[2], args[1]);
|
|
}
|
|
break;
|
|
case INDEX_op_shr_i32:
|
|
if (const_args[2]) {
|
|
tcg_out_opc_sa(s, OPC_SRL, args[0], args[1], args[2]);
|
|
} else {
|
|
tcg_out_opc_reg(s, OPC_SRLV, args[0], args[2], args[1]);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_ext8s_i32:
|
|
tcg_out_ext8s(s, args[0], args[1]);
|
|
break;
|
|
case INDEX_op_ext16s_i32:
|
|
tcg_out_ext16s(s, args[0], args[1]);
|
|
break;
|
|
|
|
case INDEX_op_brcond_i32:
|
|
tcg_out_brcond(s, args[2], args[0], args[1], args[3]);
|
|
break;
|
|
case INDEX_op_brcond2_i32:
|
|
tcg_out_brcond2(s, args[4], args[0], args[1], args[2], args[3], args[5]);
|
|
break;
|
|
|
|
case INDEX_op_setcond_i32:
|
|
tcg_out_setcond(s, args[3], args[0], args[1], args[2]);
|
|
break;
|
|
case INDEX_op_setcond2_i32:
|
|
tcg_out_setcond2(s, args[5], args[0], args[1], args[2], args[3], args[4]);
|
|
break;
|
|
|
|
case INDEX_op_qemu_ld8u:
|
|
tcg_out_qemu_ld(s, args, 0);
|
|
break;
|
|
case INDEX_op_qemu_ld8s:
|
|
tcg_out_qemu_ld(s, args, 0 | 4);
|
|
break;
|
|
case INDEX_op_qemu_ld16u:
|
|
tcg_out_qemu_ld(s, args, 1);
|
|
break;
|
|
case INDEX_op_qemu_ld16s:
|
|
tcg_out_qemu_ld(s, args, 1 | 4);
|
|
break;
|
|
case INDEX_op_qemu_ld32:
|
|
tcg_out_qemu_ld(s, args, 2);
|
|
break;
|
|
case INDEX_op_qemu_ld64:
|
|
tcg_out_qemu_ld(s, args, 3);
|
|
break;
|
|
case INDEX_op_qemu_st8:
|
|
tcg_out_qemu_st(s, args, 0);
|
|
break;
|
|
case INDEX_op_qemu_st16:
|
|
tcg_out_qemu_st(s, args, 1);
|
|
break;
|
|
case INDEX_op_qemu_st32:
|
|
tcg_out_qemu_st(s, args, 2);
|
|
break;
|
|
case INDEX_op_qemu_st64:
|
|
tcg_out_qemu_st(s, args, 3);
|
|
break;
|
|
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
}
|
|
|
|
static const TCGTargetOpDef mips_op_defs[] = {
|
|
{ INDEX_op_exit_tb, { } },
|
|
{ INDEX_op_goto_tb, { } },
|
|
{ INDEX_op_call, { "C" } },
|
|
{ INDEX_op_jmp, { "r" } },
|
|
{ INDEX_op_br, { } },
|
|
|
|
{ INDEX_op_mov_i32, { "r", "r" } },
|
|
{ INDEX_op_movi_i32, { "r" } },
|
|
{ INDEX_op_ld8u_i32, { "r", "r" } },
|
|
{ INDEX_op_ld8s_i32, { "r", "r" } },
|
|
{ INDEX_op_ld16u_i32, { "r", "r" } },
|
|
{ INDEX_op_ld16s_i32, { "r", "r" } },
|
|
{ INDEX_op_ld_i32, { "r", "r" } },
|
|
{ INDEX_op_st8_i32, { "rZ", "r" } },
|
|
{ INDEX_op_st16_i32, { "rZ", "r" } },
|
|
{ INDEX_op_st_i32, { "rZ", "r" } },
|
|
|
|
{ INDEX_op_add_i32, { "r", "rZ", "rJZ" } },
|
|
{ INDEX_op_mul_i32, { "r", "rZ", "rZ" } },
|
|
{ INDEX_op_mulu2_i32, { "r", "r", "rZ", "rZ" } },
|
|
{ INDEX_op_div_i32, { "r", "rZ", "rZ" } },
|
|
{ INDEX_op_divu_i32, { "r", "rZ", "rZ" } },
|
|
{ INDEX_op_rem_i32, { "r", "rZ", "rZ" } },
|
|
{ INDEX_op_remu_i32, { "r", "rZ", "rZ" } },
|
|
{ INDEX_op_sub_i32, { "r", "rZ", "rJZ" } },
|
|
|
|
{ INDEX_op_and_i32, { "r", "rZ", "rIZ" } },
|
|
{ INDEX_op_nor_i32, { "r", "rZ", "rZ" } },
|
|
{ INDEX_op_not_i32, { "r", "rZ" } },
|
|
{ INDEX_op_or_i32, { "r", "rZ", "rIZ" } },
|
|
{ INDEX_op_xor_i32, { "r", "rZ", "rIZ" } },
|
|
|
|
{ INDEX_op_shl_i32, { "r", "rZ", "riZ" } },
|
|
{ INDEX_op_shr_i32, { "r", "rZ", "riZ" } },
|
|
{ INDEX_op_sar_i32, { "r", "rZ", "riZ" } },
|
|
|
|
{ INDEX_op_ext8s_i32, { "r", "rZ" } },
|
|
{ INDEX_op_ext16s_i32, { "r", "rZ" } },
|
|
|
|
{ INDEX_op_brcond_i32, { "rZ", "rZ" } },
|
|
{ INDEX_op_setcond_i32, { "r", "rZ", "rZ" } },
|
|
{ INDEX_op_setcond2_i32, { "r", "rZ", "rZ", "rZ", "rZ" } },
|
|
|
|
{ INDEX_op_add2_i32, { "r", "r", "rZ", "rZ", "rJZ", "rJZ" } },
|
|
{ INDEX_op_sub2_i32, { "r", "r", "rZ", "rZ", "rJZ", "rJZ" } },
|
|
{ INDEX_op_brcond2_i32, { "rZ", "rZ", "rZ", "rZ" } },
|
|
|
|
#if TARGET_LONG_BITS == 32
|
|
{ INDEX_op_qemu_ld8u, { "L", "lZ" } },
|
|
{ INDEX_op_qemu_ld8s, { "L", "lZ" } },
|
|
{ INDEX_op_qemu_ld16u, { "L", "lZ" } },
|
|
{ INDEX_op_qemu_ld16s, { "L", "lZ" } },
|
|
{ INDEX_op_qemu_ld32, { "L", "lZ" } },
|
|
{ INDEX_op_qemu_ld64, { "L", "L", "lZ" } },
|
|
|
|
{ INDEX_op_qemu_st8, { "SZ", "SZ" } },
|
|
{ INDEX_op_qemu_st16, { "SZ", "SZ" } },
|
|
{ INDEX_op_qemu_st32, { "SZ", "SZ" } },
|
|
{ INDEX_op_qemu_st64, { "SZ", "SZ", "SZ" } },
|
|
#else
|
|
{ INDEX_op_qemu_ld8u, { "L", "lZ", "lZ" } },
|
|
{ INDEX_op_qemu_ld8s, { "L", "lZ", "lZ" } },
|
|
{ INDEX_op_qemu_ld16u, { "L", "lZ", "lZ" } },
|
|
{ INDEX_op_qemu_ld16s, { "L", "lZ", "lZ" } },
|
|
{ INDEX_op_qemu_ld32, { "L", "lZ", "lZ" } },
|
|
{ INDEX_op_qemu_ld64, { "L", "L", "lZ", "lZ" } },
|
|
|
|
{ INDEX_op_qemu_st8, { "SZ", "SZ", "SZ" } },
|
|
{ INDEX_op_qemu_st16, { "SZ", "SZ", "SZ" } },
|
|
{ INDEX_op_qemu_st32, { "SZ", "SZ", "SZ" } },
|
|
{ INDEX_op_qemu_st64, { "SZ", "SZ", "SZ", "SZ" } },
|
|
#endif
|
|
{ -1 },
|
|
};
|
|
|
|
static int tcg_target_callee_save_regs[] = {
|
|
TCG_REG_S0,
|
|
TCG_REG_S1,
|
|
TCG_REG_S2,
|
|
TCG_REG_S3,
|
|
TCG_REG_S4,
|
|
TCG_REG_S5,
|
|
TCG_REG_S6,
|
|
TCG_REG_S7,
|
|
TCG_REG_GP,
|
|
/* TCG_REG_FP, */ /* currently used for the global env, so np
|
|
need to save */
|
|
TCG_REG_RA, /* should be last for ABI compliance */
|
|
};
|
|
|
|
/* Generate global QEMU prologue and epilogue code */
|
|
void tcg_target_qemu_prologue(TCGContext *s)
|
|
{
|
|
int i, frame_size;
|
|
|
|
/* reserve some stack space */
|
|
frame_size = ARRAY_SIZE(tcg_target_callee_save_regs) * 4
|
|
+ TCG_STATIC_CALL_ARGS_SIZE;
|
|
frame_size = (frame_size + TCG_TARGET_STACK_ALIGN - 1) &
|
|
~(TCG_TARGET_STACK_ALIGN - 1);
|
|
|
|
/* TB prologue */
|
|
tcg_out_addi(s, TCG_REG_SP, -frame_size);
|
|
for(i = 0 ; i < ARRAY_SIZE(tcg_target_callee_save_regs) ; i++) {
|
|
tcg_out_st(s, TCG_TYPE_I32, tcg_target_callee_save_regs[i],
|
|
TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE + i * 4);
|
|
}
|
|
|
|
/* Call generated code */
|
|
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_A0, 0);
|
|
tcg_out_nop(s);
|
|
tb_ret_addr = s->code_ptr;
|
|
|
|
/* TB epilogue */
|
|
for(i = 0 ; i < ARRAY_SIZE(tcg_target_callee_save_regs) ; i++) {
|
|
tcg_out_ld(s, TCG_TYPE_I32, tcg_target_callee_save_regs[i],
|
|
TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE + i * 4);
|
|
}
|
|
|
|
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_RA, 0);
|
|
tcg_out_addi(s, TCG_REG_SP, frame_size);
|
|
}
|
|
|
|
void tcg_target_init(TCGContext *s)
|
|
{
|
|
tcg_regset_set(tcg_target_available_regs[TCG_TYPE_I32], 0xffffffff);
|
|
tcg_regset_set(tcg_target_call_clobber_regs,
|
|
(1 << TCG_REG_V0) |
|
|
(1 << TCG_REG_V1) |
|
|
(1 << TCG_REG_A0) |
|
|
(1 << TCG_REG_A1) |
|
|
(1 << TCG_REG_A2) |
|
|
(1 << TCG_REG_A3) |
|
|
(1 << TCG_REG_T1) |
|
|
(1 << TCG_REG_T2) |
|
|
(1 << TCG_REG_T3) |
|
|
(1 << TCG_REG_T4) |
|
|
(1 << TCG_REG_T5) |
|
|
(1 << TCG_REG_T6) |
|
|
(1 << TCG_REG_T7) |
|
|
(1 << TCG_REG_T8) |
|
|
(1 << TCG_REG_T9));
|
|
|
|
tcg_regset_clear(s->reserved_regs);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_ZERO); /* zero register */
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_K0); /* kernel use only */
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_K1); /* kernel use only */
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_AT); /* internal use */
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_T0); /* internal use */
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_RA); /* return address */
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_SP); /* stack pointer */
|
|
|
|
tcg_add_target_add_op_defs(mips_op_defs);
|
|
}
|