root / tcg / mips / tcg-target.c @ 3cf246f0
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/*
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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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#include "tcg-be-null.h" |
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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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|
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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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|
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/* check if we really need so many registers :P */
|
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static const TCGReg 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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|
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static const TCGReg 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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|
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static const TCGReg 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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|
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static uint8_t *tb_ret_addr;
|
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|
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static inline uint32_t reloc_lo16_val(void *pc, intptr_t target) |
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{
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return target & 0xffff; |
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} |
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|
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static inline void reloc_lo16(void *pc, intptr_t 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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|
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static inline uint32_t reloc_hi16_val(void *pc, intptr_t target) |
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{
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return (target >> 16) & 0xffff; |
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} |
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|
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static inline void reloc_hi16(void *pc, intptr_t 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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|
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static inline uint32_t reloc_pc16_val(void *pc, intptr_t target) |
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{
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int32_t disp; |
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|
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disp = target - (intptr_t)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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|
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return (disp >> 2) & 0xffff; |
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} |
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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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|
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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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|
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return (target >> 2) & 0x3ffffff; |
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} |
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|
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static inline void reloc_pc26(void *pc, intptr_t 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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|
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static void patch_reloc(uint8_t *code_ptr, int type, |
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intptr_t value, intptr_t 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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|
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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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|
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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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# if (TARGET_LONG_BITS == 64) |
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_A2); |
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# endif
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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 == 32) |
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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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# if TARGET_LONG_BITS == 64 |
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_A3); |
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# endif
|
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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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|
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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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|
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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_BLEZ = 0x06 << 26, |
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OPC_BGTZ = 0x07 << 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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|
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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_ROTR = OPC_SPECIAL | (0x01 << 21) | 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_ROTRV = OPC_SPECIAL | (0x01 << 6) | 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_MOVZ = OPC_SPECIAL | 0x0A,
|
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OPC_MOVN = OPC_SPECIAL | 0x0B,
|
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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,
|
| 323 |
|
| 324 |
OPC_REGIMM = 0x01 << 26, |
| 325 |
OPC_BLTZ = OPC_REGIMM | (0x00 << 16), |
| 326 |
OPC_BGEZ = OPC_REGIMM | (0x01 << 16), |
| 327 |
|
| 328 |
OPC_SPECIAL2 = 0x1c << 26, |
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OPC_MUL = OPC_SPECIAL2 | 0x002,
|
| 330 |
|
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OPC_SPECIAL3 = 0x1f << 26, |
| 332 |
OPC_INS = OPC_SPECIAL3 | 0x004,
|
| 333 |
OPC_WSBH = OPC_SPECIAL3 | 0x0a0,
|
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OPC_SEB = OPC_SPECIAL3 | 0x420,
|
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OPC_SEH = OPC_SPECIAL3 | 0x620,
|
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}; |
| 337 |
|
| 338 |
/*
|
| 339 |
* Type reg
|
| 340 |
*/
|
| 341 |
static inline void tcg_out_opc_reg(TCGContext *s, int opc, |
| 342 |
TCGReg rd, TCGReg rs, TCGReg rt) |
| 343 |
{
|
| 344 |
int32_t inst; |
| 345 |
|
| 346 |
inst = opc; |
| 347 |
inst |= (rs & 0x1F) << 21; |
| 348 |
inst |= (rt & 0x1F) << 16; |
| 349 |
inst |= (rd & 0x1F) << 11; |
| 350 |
tcg_out32(s, inst); |
| 351 |
} |
| 352 |
|
| 353 |
/*
|
| 354 |
* Type immediate
|
| 355 |
*/
|
| 356 |
static inline void tcg_out_opc_imm(TCGContext *s, int opc, |
| 357 |
TCGReg rt, TCGReg rs, TCGArg imm) |
| 358 |
{
|
| 359 |
int32_t inst; |
| 360 |
|
| 361 |
inst = opc; |
| 362 |
inst |= (rs & 0x1F) << 21; |
| 363 |
inst |= (rt & 0x1F) << 16; |
| 364 |
inst |= (imm & 0xffff);
|
| 365 |
tcg_out32(s, inst); |
| 366 |
} |
| 367 |
|
| 368 |
/*
|
| 369 |
* Type branch
|
| 370 |
*/
|
| 371 |
static inline void tcg_out_opc_br(TCGContext *s, int opc, |
| 372 |
TCGReg rt, TCGReg rs) |
| 373 |
{
|
| 374 |
/* We pay attention here to not modify the branch target by reading
|
| 375 |
the existing value and using it again. This ensure that caches and
|
| 376 |
memory are kept coherent during retranslation. */
|
| 377 |
uint16_t offset = (uint16_t)(*(uint32_t *) s->code_ptr); |
| 378 |
|
| 379 |
tcg_out_opc_imm(s, opc, rt, rs, offset); |
| 380 |
} |
| 381 |
|
| 382 |
/*
|
| 383 |
* Type sa
|
| 384 |
*/
|
| 385 |
static inline void tcg_out_opc_sa(TCGContext *s, int opc, |
| 386 |
TCGReg rd, TCGReg rt, TCGArg sa) |
| 387 |
{
|
| 388 |
int32_t inst; |
| 389 |
|
| 390 |
inst = opc; |
| 391 |
inst |= (rt & 0x1F) << 16; |
| 392 |
inst |= (rd & 0x1F) << 11; |
| 393 |
inst |= (sa & 0x1F) << 6; |
| 394 |
tcg_out32(s, inst); |
| 395 |
|
| 396 |
} |
| 397 |
|
| 398 |
static inline void tcg_out_nop(TCGContext *s) |
| 399 |
{
|
| 400 |
tcg_out32(s, 0);
|
| 401 |
} |
| 402 |
|
| 403 |
static inline void tcg_out_mov(TCGContext *s, TCGType type, |
| 404 |
TCGReg ret, TCGReg arg) |
| 405 |
{
|
| 406 |
/* Simple reg-reg move, optimising out the 'do nothing' case */
|
| 407 |
if (ret != arg) {
|
| 408 |
tcg_out_opc_reg(s, OPC_ADDU, ret, arg, TCG_REG_ZERO); |
| 409 |
} |
| 410 |
} |
| 411 |
|
| 412 |
static inline void tcg_out_movi(TCGContext *s, TCGType type, |
| 413 |
TCGReg reg, tcg_target_long arg) |
| 414 |
{
|
| 415 |
if (arg == (int16_t)arg) {
|
| 416 |
tcg_out_opc_imm(s, OPC_ADDIU, reg, TCG_REG_ZERO, arg); |
| 417 |
} else if (arg == (uint16_t)arg) { |
| 418 |
tcg_out_opc_imm(s, OPC_ORI, reg, TCG_REG_ZERO, arg); |
| 419 |
} else {
|
| 420 |
tcg_out_opc_imm(s, OPC_LUI, reg, 0, arg >> 16); |
| 421 |
tcg_out_opc_imm(s, OPC_ORI, reg, reg, arg & 0xffff);
|
| 422 |
} |
| 423 |
} |
| 424 |
|
| 425 |
static inline void tcg_out_bswap16(TCGContext *s, TCGReg ret, TCGReg arg) |
| 426 |
{
|
| 427 |
if (use_mips32r2_instructions) {
|
| 428 |
tcg_out_opc_reg(s, OPC_WSBH, ret, 0, arg);
|
| 429 |
} else {
|
| 430 |
/* ret and arg can't be register at */
|
| 431 |
if (ret == TCG_REG_AT || arg == TCG_REG_AT) {
|
| 432 |
tcg_abort(); |
| 433 |
} |
| 434 |
|
| 435 |
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8);
|
| 436 |
tcg_out_opc_sa(s, OPC_SLL, ret, arg, 8);
|
| 437 |
tcg_out_opc_imm(s, OPC_ANDI, ret, ret, 0xff00);
|
| 438 |
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT); |
| 439 |
} |
| 440 |
} |
| 441 |
|
| 442 |
static inline void tcg_out_bswap16s(TCGContext *s, TCGReg ret, TCGReg arg) |
| 443 |
{
|
| 444 |
if (use_mips32r2_instructions) {
|
| 445 |
tcg_out_opc_reg(s, OPC_WSBH, ret, 0, arg);
|
| 446 |
tcg_out_opc_reg(s, OPC_SEH, ret, 0, ret);
|
| 447 |
} else {
|
| 448 |
/* ret and arg can't be register at */
|
| 449 |
if (ret == TCG_REG_AT || arg == TCG_REG_AT) {
|
| 450 |
tcg_abort(); |
| 451 |
} |
| 452 |
|
| 453 |
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8);
|
| 454 |
tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24);
|
| 455 |
tcg_out_opc_sa(s, OPC_SRA, ret, ret, 16);
|
| 456 |
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT); |
| 457 |
} |
| 458 |
} |
| 459 |
|
| 460 |
static inline void tcg_out_bswap32(TCGContext *s, TCGReg ret, TCGReg arg) |
| 461 |
{
|
| 462 |
if (use_mips32r2_instructions) {
|
| 463 |
tcg_out_opc_reg(s, OPC_WSBH, ret, 0, arg);
|
| 464 |
tcg_out_opc_sa(s, OPC_ROTR, ret, ret, 16);
|
| 465 |
} else {
|
| 466 |
/* ret and arg must be different and can't be register at */
|
| 467 |
if (ret == arg || ret == TCG_REG_AT || arg == TCG_REG_AT) {
|
| 468 |
tcg_abort(); |
| 469 |
} |
| 470 |
|
| 471 |
tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24);
|
| 472 |
|
| 473 |
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 24);
|
| 474 |
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT); |
| 475 |
|
| 476 |
tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, arg, 0xff00);
|
| 477 |
tcg_out_opc_sa(s, OPC_SLL, TCG_REG_AT, TCG_REG_AT, 8);
|
| 478 |
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT); |
| 479 |
|
| 480 |
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8);
|
| 481 |
tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, TCG_REG_AT, 0xff00);
|
| 482 |
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT); |
| 483 |
} |
| 484 |
} |
| 485 |
|
| 486 |
static inline void tcg_out_ext8s(TCGContext *s, TCGReg ret, TCGReg arg) |
| 487 |
{
|
| 488 |
if (use_mips32r2_instructions) {
|
| 489 |
tcg_out_opc_reg(s, OPC_SEB, ret, 0, arg);
|
| 490 |
} else {
|
| 491 |
tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24);
|
| 492 |
tcg_out_opc_sa(s, OPC_SRA, ret, ret, 24);
|
| 493 |
} |
| 494 |
} |
| 495 |
|
| 496 |
static inline void tcg_out_ext16s(TCGContext *s, TCGReg ret, TCGReg arg) |
| 497 |
{
|
| 498 |
if (use_mips32r2_instructions) {
|
| 499 |
tcg_out_opc_reg(s, OPC_SEH, ret, 0, arg);
|
| 500 |
} else {
|
| 501 |
tcg_out_opc_sa(s, OPC_SLL, ret, arg, 16);
|
| 502 |
tcg_out_opc_sa(s, OPC_SRA, ret, ret, 16);
|
| 503 |
} |
| 504 |
} |
| 505 |
|
| 506 |
static inline void tcg_out_ldst(TCGContext *s, int opc, TCGArg arg, |
| 507 |
TCGReg arg1, TCGArg arg2) |
| 508 |
{
|
| 509 |
if (arg2 == (int16_t) arg2) {
|
| 510 |
tcg_out_opc_imm(s, opc, arg, arg1, arg2); |
| 511 |
} else {
|
| 512 |
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, arg2); |
| 513 |
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_AT, TCG_REG_AT, arg1); |
| 514 |
tcg_out_opc_imm(s, opc, arg, TCG_REG_AT, 0);
|
| 515 |
} |
| 516 |
} |
| 517 |
|
| 518 |
static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg arg, |
| 519 |
TCGReg arg1, intptr_t arg2) |
| 520 |
{
|
| 521 |
tcg_out_ldst(s, OPC_LW, arg, arg1, arg2); |
| 522 |
} |
| 523 |
|
| 524 |
static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, |
| 525 |
TCGReg arg1, intptr_t arg2) |
| 526 |
{
|
| 527 |
tcg_out_ldst(s, OPC_SW, arg, arg1, arg2); |
| 528 |
} |
| 529 |
|
| 530 |
static inline void tcg_out_addi(TCGContext *s, TCGReg reg, TCGArg val) |
| 531 |
{
|
| 532 |
if (val == (int16_t)val) {
|
| 533 |
tcg_out_opc_imm(s, OPC_ADDIU, reg, reg, val); |
| 534 |
} else {
|
| 535 |
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, val); |
| 536 |
tcg_out_opc_reg(s, OPC_ADDU, reg, reg, TCG_REG_AT); |
| 537 |
} |
| 538 |
} |
| 539 |
|
| 540 |
/* Helper routines for marshalling helper function arguments into
|
| 541 |
* the correct registers and stack.
|
| 542 |
* arg_num is where we want to put this argument, and is updated to be ready
|
| 543 |
* for the next call. arg is the argument itself. Note that arg_num 0..3 is
|
| 544 |
* real registers, 4+ on stack.
|
| 545 |
*
|
| 546 |
* We provide routines for arguments which are: immediate, 32 bit
|
| 547 |
* value in register, 16 and 8 bit values in register (which must be zero
|
| 548 |
* extended before use) and 64 bit value in a lo:hi register pair.
|
| 549 |
*/
|
| 550 |
#define DEFINE_TCG_OUT_CALL_IARG(NAME, ARGPARAM) \
|
| 551 |
static inline void NAME(TCGContext *s, int *arg_num, ARGPARAM) \ |
| 552 |
{ \
|
| 553 |
if (*arg_num < 4) { \ |
| 554 |
DEFINE_TCG_OUT_CALL_IARG_GET_ARG(tcg_target_call_iarg_regs[*arg_num]); \ |
| 555 |
} else { \
|
| 556 |
DEFINE_TCG_OUT_CALL_IARG_GET_ARG(TCG_REG_AT); \ |
| 557 |
tcg_out_st(s, TCG_TYPE_I32, TCG_REG_AT, TCG_REG_SP, 4 * (*arg_num)); \
|
| 558 |
} \ |
| 559 |
(*arg_num)++; \ |
| 560 |
} |
| 561 |
#define DEFINE_TCG_OUT_CALL_IARG_GET_ARG(A) \
|
| 562 |
tcg_out_opc_imm(s, OPC_ANDI, A, arg, 0xff);
|
| 563 |
DEFINE_TCG_OUT_CALL_IARG(tcg_out_call_iarg_reg8, TCGReg arg) |
| 564 |
#undef DEFINE_TCG_OUT_CALL_IARG_GET_ARG
|
| 565 |
#define DEFINE_TCG_OUT_CALL_IARG_GET_ARG(A) \
|
| 566 |
tcg_out_opc_imm(s, OPC_ANDI, A, arg, 0xffff);
|
| 567 |
DEFINE_TCG_OUT_CALL_IARG(tcg_out_call_iarg_reg16, TCGReg arg) |
| 568 |
#undef DEFINE_TCG_OUT_CALL_IARG_GET_ARG
|
| 569 |
#define DEFINE_TCG_OUT_CALL_IARG_GET_ARG(A) \
|
| 570 |
tcg_out_movi(s, TCG_TYPE_I32, A, arg); |
| 571 |
DEFINE_TCG_OUT_CALL_IARG(tcg_out_call_iarg_imm32, TCGArg arg) |
| 572 |
#undef DEFINE_TCG_OUT_CALL_IARG_GET_ARG
|
| 573 |
|
| 574 |
/* We don't use the macro for this one to avoid an unnecessary reg-reg
|
| 575 |
move when storing to the stack. */
|
| 576 |
static inline void tcg_out_call_iarg_reg32(TCGContext *s, int *arg_num, |
| 577 |
TCGReg arg) |
| 578 |
{
|
| 579 |
if (*arg_num < 4) { |
| 580 |
tcg_out_mov(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[*arg_num], arg); |
| 581 |
} else {
|
| 582 |
tcg_out_st(s, TCG_TYPE_I32, arg, TCG_REG_SP, 4 * (*arg_num));
|
| 583 |
} |
| 584 |
(*arg_num)++; |
| 585 |
} |
| 586 |
|
| 587 |
static inline void tcg_out_call_iarg_reg64(TCGContext *s, int *arg_num, |
| 588 |
TCGReg arg_low, TCGReg arg_high) |
| 589 |
{
|
| 590 |
(*arg_num) = (*arg_num + 1) & ~1; |
| 591 |
|
| 592 |
#if defined(TCG_TARGET_WORDS_BIGENDIAN)
|
| 593 |
tcg_out_call_iarg_reg32(s, arg_num, arg_high); |
| 594 |
tcg_out_call_iarg_reg32(s, arg_num, arg_low); |
| 595 |
#else
|
| 596 |
tcg_out_call_iarg_reg32(s, arg_num, arg_low); |
| 597 |
tcg_out_call_iarg_reg32(s, arg_num, arg_high); |
| 598 |
#endif
|
| 599 |
} |
| 600 |
|
| 601 |
static void tcg_out_brcond(TCGContext *s, TCGCond cond, TCGArg arg1, |
| 602 |
TCGArg arg2, int label_index)
|
| 603 |
{
|
| 604 |
TCGLabel *l = &s->labels[label_index]; |
| 605 |
|
| 606 |
switch (cond) {
|
| 607 |
case TCG_COND_EQ:
|
| 608 |
tcg_out_opc_br(s, OPC_BEQ, arg1, arg2); |
| 609 |
break;
|
| 610 |
case TCG_COND_NE:
|
| 611 |
tcg_out_opc_br(s, OPC_BNE, arg1, arg2); |
| 612 |
break;
|
| 613 |
case TCG_COND_LT:
|
| 614 |
if (arg2 == 0) { |
| 615 |
tcg_out_opc_br(s, OPC_BLTZ, 0, arg1);
|
| 616 |
} else {
|
| 617 |
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg1, arg2); |
| 618 |
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO); |
| 619 |
} |
| 620 |
break;
|
| 621 |
case TCG_COND_LTU:
|
| 622 |
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg1, arg2); |
| 623 |
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO); |
| 624 |
break;
|
| 625 |
case TCG_COND_GE:
|
| 626 |
if (arg2 == 0) { |
| 627 |
tcg_out_opc_br(s, OPC_BGEZ, 0, arg1);
|
| 628 |
} else {
|
| 629 |
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg1, arg2); |
| 630 |
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO); |
| 631 |
} |
| 632 |
break;
|
| 633 |
case TCG_COND_GEU:
|
| 634 |
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg1, arg2); |
| 635 |
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO); |
| 636 |
break;
|
| 637 |
case TCG_COND_LE:
|
| 638 |
if (arg2 == 0) { |
| 639 |
tcg_out_opc_br(s, OPC_BLEZ, 0, arg1);
|
| 640 |
} else {
|
| 641 |
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg2, arg1); |
| 642 |
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO); |
| 643 |
} |
| 644 |
break;
|
| 645 |
case TCG_COND_LEU:
|
| 646 |
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg2, arg1); |
| 647 |
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO); |
| 648 |
break;
|
| 649 |
case TCG_COND_GT:
|
| 650 |
if (arg2 == 0) { |
| 651 |
tcg_out_opc_br(s, OPC_BGTZ, 0, arg1);
|
| 652 |
} else {
|
| 653 |
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg2, arg1); |
| 654 |
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO); |
| 655 |
} |
| 656 |
break;
|
| 657 |
case TCG_COND_GTU:
|
| 658 |
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg2, arg1); |
| 659 |
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO); |
| 660 |
break;
|
| 661 |
default:
|
| 662 |
tcg_abort(); |
| 663 |
break;
|
| 664 |
} |
| 665 |
if (l->has_value) {
|
| 666 |
reloc_pc16(s->code_ptr - 4, l->u.value);
|
| 667 |
} else {
|
| 668 |
tcg_out_reloc(s, s->code_ptr - 4, R_MIPS_PC16, label_index, 0); |
| 669 |
} |
| 670 |
tcg_out_nop(s); |
| 671 |
} |
| 672 |
|
| 673 |
/* XXX: we implement it at the target level to avoid having to
|
| 674 |
handle cross basic blocks temporaries */
|
| 675 |
static void tcg_out_brcond2(TCGContext *s, TCGCond cond, TCGArg arg1, |
| 676 |
TCGArg arg2, TCGArg arg3, TCGArg arg4, |
| 677 |
int label_index)
|
| 678 |
{
|
| 679 |
void *label_ptr;
|
| 680 |
|
| 681 |
switch(cond) {
|
| 682 |
case TCG_COND_NE:
|
| 683 |
tcg_out_brcond(s, TCG_COND_NE, arg2, arg4, label_index); |
| 684 |
tcg_out_brcond(s, TCG_COND_NE, arg1, arg3, label_index); |
| 685 |
return;
|
| 686 |
case TCG_COND_EQ:
|
| 687 |
break;
|
| 688 |
case TCG_COND_LT:
|
| 689 |
case TCG_COND_LE:
|
| 690 |
tcg_out_brcond(s, TCG_COND_LT, arg2, arg4, label_index); |
| 691 |
break;
|
| 692 |
case TCG_COND_GT:
|
| 693 |
case TCG_COND_GE:
|
| 694 |
tcg_out_brcond(s, TCG_COND_GT, arg2, arg4, label_index); |
| 695 |
break;
|
| 696 |
case TCG_COND_LTU:
|
| 697 |
case TCG_COND_LEU:
|
| 698 |
tcg_out_brcond(s, TCG_COND_LTU, arg2, arg4, label_index); |
| 699 |
break;
|
| 700 |
case TCG_COND_GTU:
|
| 701 |
case TCG_COND_GEU:
|
| 702 |
tcg_out_brcond(s, TCG_COND_GTU, arg2, arg4, label_index); |
| 703 |
break;
|
| 704 |
default:
|
| 705 |
tcg_abort(); |
| 706 |
} |
| 707 |
|
| 708 |
label_ptr = s->code_ptr; |
| 709 |
tcg_out_opc_br(s, OPC_BNE, arg2, arg4); |
| 710 |
tcg_out_nop(s); |
| 711 |
|
| 712 |
switch(cond) {
|
| 713 |
case TCG_COND_EQ:
|
| 714 |
tcg_out_brcond(s, TCG_COND_EQ, arg1, arg3, label_index); |
| 715 |
break;
|
| 716 |
case TCG_COND_LT:
|
| 717 |
case TCG_COND_LTU:
|
| 718 |
tcg_out_brcond(s, TCG_COND_LTU, arg1, arg3, label_index); |
| 719 |
break;
|
| 720 |
case TCG_COND_LE:
|
| 721 |
case TCG_COND_LEU:
|
| 722 |
tcg_out_brcond(s, TCG_COND_LEU, arg1, arg3, label_index); |
| 723 |
break;
|
| 724 |
case TCG_COND_GT:
|
| 725 |
case TCG_COND_GTU:
|
| 726 |
tcg_out_brcond(s, TCG_COND_GTU, arg1, arg3, label_index); |
| 727 |
break;
|
| 728 |
case TCG_COND_GE:
|
| 729 |
case TCG_COND_GEU:
|
| 730 |
tcg_out_brcond(s, TCG_COND_GEU, arg1, arg3, label_index); |
| 731 |
break;
|
| 732 |
default:
|
| 733 |
tcg_abort(); |
| 734 |
} |
| 735 |
|
| 736 |
reloc_pc16(label_ptr, (tcg_target_long) s->code_ptr); |
| 737 |
} |
| 738 |
|
| 739 |
static void tcg_out_movcond(TCGContext *s, TCGCond cond, TCGReg ret, |
| 740 |
TCGArg c1, TCGArg c2, TCGArg v) |
| 741 |
{
|
| 742 |
switch (cond) {
|
| 743 |
case TCG_COND_EQ:
|
| 744 |
if (c1 == 0) { |
| 745 |
tcg_out_opc_reg(s, OPC_MOVZ, ret, v, c2); |
| 746 |
} else if (c2 == 0) { |
| 747 |
tcg_out_opc_reg(s, OPC_MOVZ, ret, v, c1); |
| 748 |
} else {
|
| 749 |
tcg_out_opc_reg(s, OPC_XOR, TCG_REG_AT, c1, c2); |
| 750 |
tcg_out_opc_reg(s, OPC_MOVZ, ret, v, TCG_REG_AT); |
| 751 |
} |
| 752 |
break;
|
| 753 |
case TCG_COND_NE:
|
| 754 |
if (c1 == 0) { |
| 755 |
tcg_out_opc_reg(s, OPC_MOVN, ret, v, c2); |
| 756 |
} else if (c2 == 0) { |
| 757 |
tcg_out_opc_reg(s, OPC_MOVN, ret, v, c1); |
| 758 |
} else {
|
| 759 |
tcg_out_opc_reg(s, OPC_XOR, TCG_REG_AT, c1, c2); |
| 760 |
tcg_out_opc_reg(s, OPC_MOVN, ret, v, TCG_REG_AT); |
| 761 |
} |
| 762 |
break;
|
| 763 |
case TCG_COND_LT:
|
| 764 |
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, c1, c2); |
| 765 |
tcg_out_opc_reg(s, OPC_MOVN, ret, v, TCG_REG_AT); |
| 766 |
break;
|
| 767 |
case TCG_COND_LTU:
|
| 768 |
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, c1, c2); |
| 769 |
tcg_out_opc_reg(s, OPC_MOVN, ret, v, TCG_REG_AT); |
| 770 |
break;
|
| 771 |
case TCG_COND_GE:
|
| 772 |
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, c1, c2); |
| 773 |
tcg_out_opc_reg(s, OPC_MOVZ, ret, v, TCG_REG_AT); |
| 774 |
break;
|
| 775 |
case TCG_COND_GEU:
|
| 776 |
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, c1, c2); |
| 777 |
tcg_out_opc_reg(s, OPC_MOVZ, ret, v, TCG_REG_AT); |
| 778 |
break;
|
| 779 |
case TCG_COND_LE:
|
| 780 |
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, c2, c1); |
| 781 |
tcg_out_opc_reg(s, OPC_MOVZ, ret, v, TCG_REG_AT); |
| 782 |
break;
|
| 783 |
case TCG_COND_LEU:
|
| 784 |
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, c2, c1); |
| 785 |
tcg_out_opc_reg(s, OPC_MOVZ, ret, v, TCG_REG_AT); |
| 786 |
break;
|
| 787 |
case TCG_COND_GT:
|
| 788 |
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, c2, c1); |
| 789 |
tcg_out_opc_reg(s, OPC_MOVN, ret, v, TCG_REG_AT); |
| 790 |
break;
|
| 791 |
case TCG_COND_GTU:
|
| 792 |
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, c2, c1); |
| 793 |
tcg_out_opc_reg(s, OPC_MOVN, ret, v, TCG_REG_AT); |
| 794 |
break;
|
| 795 |
default:
|
| 796 |
tcg_abort(); |
| 797 |
break;
|
| 798 |
} |
| 799 |
} |
| 800 |
|
| 801 |
static void tcg_out_setcond(TCGContext *s, TCGCond cond, TCGReg ret, |
| 802 |
TCGArg arg1, TCGArg arg2) |
| 803 |
{
|
| 804 |
switch (cond) {
|
| 805 |
case TCG_COND_EQ:
|
| 806 |
if (arg1 == 0) { |
| 807 |
tcg_out_opc_imm(s, OPC_SLTIU, ret, arg2, 1);
|
| 808 |
} else if (arg2 == 0) { |
| 809 |
tcg_out_opc_imm(s, OPC_SLTIU, ret, arg1, 1);
|
| 810 |
} else {
|
| 811 |
tcg_out_opc_reg(s, OPC_XOR, ret, arg1, arg2); |
| 812 |
tcg_out_opc_imm(s, OPC_SLTIU, ret, ret, 1);
|
| 813 |
} |
| 814 |
break;
|
| 815 |
case TCG_COND_NE:
|
| 816 |
if (arg1 == 0) { |
| 817 |
tcg_out_opc_reg(s, OPC_SLTU, ret, TCG_REG_ZERO, arg2); |
| 818 |
} else if (arg2 == 0) { |
| 819 |
tcg_out_opc_reg(s, OPC_SLTU, ret, TCG_REG_ZERO, arg1); |
| 820 |
} else {
|
| 821 |
tcg_out_opc_reg(s, OPC_XOR, ret, arg1, arg2); |
| 822 |
tcg_out_opc_reg(s, OPC_SLTU, ret, TCG_REG_ZERO, ret); |
| 823 |
} |
| 824 |
break;
|
| 825 |
case TCG_COND_LT:
|
| 826 |
tcg_out_opc_reg(s, OPC_SLT, ret, arg1, arg2); |
| 827 |
break;
|
| 828 |
case TCG_COND_LTU:
|
| 829 |
tcg_out_opc_reg(s, OPC_SLTU, ret, arg1, arg2); |
| 830 |
break;
|
| 831 |
case TCG_COND_GE:
|
| 832 |
tcg_out_opc_reg(s, OPC_SLT, ret, arg1, arg2); |
| 833 |
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
|
| 834 |
break;
|
| 835 |
case TCG_COND_GEU:
|
| 836 |
tcg_out_opc_reg(s, OPC_SLTU, ret, arg1, arg2); |
| 837 |
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
|
| 838 |
break;
|
| 839 |
case TCG_COND_LE:
|
| 840 |
tcg_out_opc_reg(s, OPC_SLT, ret, arg2, arg1); |
| 841 |
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
|
| 842 |
break;
|
| 843 |
case TCG_COND_LEU:
|
| 844 |
tcg_out_opc_reg(s, OPC_SLTU, ret, arg2, arg1); |
| 845 |
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
|
| 846 |
break;
|
| 847 |
case TCG_COND_GT:
|
| 848 |
tcg_out_opc_reg(s, OPC_SLT, ret, arg2, arg1); |
| 849 |
break;
|
| 850 |
case TCG_COND_GTU:
|
| 851 |
tcg_out_opc_reg(s, OPC_SLTU, ret, arg2, arg1); |
| 852 |
break;
|
| 853 |
default:
|
| 854 |
tcg_abort(); |
| 855 |
break;
|
| 856 |
} |
| 857 |
} |
| 858 |
|
| 859 |
/* XXX: we implement it at the target level to avoid having to
|
| 860 |
handle cross basic blocks temporaries */
|
| 861 |
static void tcg_out_setcond2(TCGContext *s, TCGCond cond, TCGReg ret, |
| 862 |
TCGArg arg1, TCGArg arg2, TCGArg arg3, TCGArg arg4) |
| 863 |
{
|
| 864 |
switch (cond) {
|
| 865 |
case TCG_COND_EQ:
|
| 866 |
tcg_out_setcond(s, TCG_COND_EQ, TCG_REG_AT, arg2, arg4); |
| 867 |
tcg_out_setcond(s, TCG_COND_EQ, TCG_REG_T0, arg1, arg3); |
| 868 |
tcg_out_opc_reg(s, OPC_AND, ret, TCG_REG_AT, TCG_REG_T0); |
| 869 |
return;
|
| 870 |
case TCG_COND_NE:
|
| 871 |
tcg_out_setcond(s, TCG_COND_NE, TCG_REG_AT, arg2, arg4); |
| 872 |
tcg_out_setcond(s, TCG_COND_NE, TCG_REG_T0, arg1, arg3); |
| 873 |
tcg_out_opc_reg(s, OPC_OR, ret, TCG_REG_AT, TCG_REG_T0); |
| 874 |
return;
|
| 875 |
case TCG_COND_LT:
|
| 876 |
case TCG_COND_LE:
|
| 877 |
tcg_out_setcond(s, TCG_COND_LT, TCG_REG_AT, arg2, arg4); |
| 878 |
break;
|
| 879 |
case TCG_COND_GT:
|
| 880 |
case TCG_COND_GE:
|
| 881 |
tcg_out_setcond(s, TCG_COND_GT, TCG_REG_AT, arg2, arg4); |
| 882 |
break;
|
| 883 |
case TCG_COND_LTU:
|
| 884 |
case TCG_COND_LEU:
|
| 885 |
tcg_out_setcond(s, TCG_COND_LTU, TCG_REG_AT, arg2, arg4); |
| 886 |
break;
|
| 887 |
case TCG_COND_GTU:
|
| 888 |
case TCG_COND_GEU:
|
| 889 |
tcg_out_setcond(s, TCG_COND_GTU, TCG_REG_AT, arg2, arg4); |
| 890 |
break;
|
| 891 |
default:
|
| 892 |
tcg_abort(); |
| 893 |
break;
|
| 894 |
} |
| 895 |
|
| 896 |
tcg_out_setcond(s, TCG_COND_EQ, TCG_REG_T0, arg2, arg4); |
| 897 |
|
| 898 |
switch(cond) {
|
| 899 |
case TCG_COND_LT:
|
| 900 |
case TCG_COND_LTU:
|
| 901 |
tcg_out_setcond(s, TCG_COND_LTU, ret, arg1, arg3); |
| 902 |
break;
|
| 903 |
case TCG_COND_LE:
|
| 904 |
case TCG_COND_LEU:
|
| 905 |
tcg_out_setcond(s, TCG_COND_LEU, ret, arg1, arg3); |
| 906 |
break;
|
| 907 |
case TCG_COND_GT:
|
| 908 |
case TCG_COND_GTU:
|
| 909 |
tcg_out_setcond(s, TCG_COND_GTU, ret, arg1, arg3); |
| 910 |
break;
|
| 911 |
case TCG_COND_GE:
|
| 912 |
case TCG_COND_GEU:
|
| 913 |
tcg_out_setcond(s, TCG_COND_GEU, ret, arg1, arg3); |
| 914 |
break;
|
| 915 |
default:
|
| 916 |
tcg_abort(); |
| 917 |
} |
| 918 |
|
| 919 |
tcg_out_opc_reg(s, OPC_AND, ret, ret, TCG_REG_T0); |
| 920 |
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT); |
| 921 |
} |
| 922 |
|
| 923 |
#if defined(CONFIG_SOFTMMU)
|
| 924 |
/* helper signature: helper_ld_mmu(CPUState *env, target_ulong addr,
|
| 925 |
int mmu_idx) */
|
| 926 |
static const void * const qemu_ld_helpers[4] = { |
| 927 |
helper_ldb_mmu, |
| 928 |
helper_ldw_mmu, |
| 929 |
helper_ldl_mmu, |
| 930 |
helper_ldq_mmu, |
| 931 |
}; |
| 932 |
|
| 933 |
/* helper signature: helper_st_mmu(CPUState *env, target_ulong addr,
|
| 934 |
uintxx_t val, int mmu_idx) */
|
| 935 |
static const void * const qemu_st_helpers[4] = { |
| 936 |
helper_stb_mmu, |
| 937 |
helper_stw_mmu, |
| 938 |
helper_stl_mmu, |
| 939 |
helper_stq_mmu, |
| 940 |
}; |
| 941 |
#endif
|
| 942 |
|
| 943 |
static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, |
| 944 |
int opc)
|
| 945 |
{
|
| 946 |
TCGReg addr_regl, data_regl, data_regh, data_reg1, data_reg2; |
| 947 |
#if defined(CONFIG_SOFTMMU)
|
| 948 |
void *label1_ptr, *label2_ptr;
|
| 949 |
int arg_num;
|
| 950 |
int mem_index, s_bits;
|
| 951 |
int addr_meml;
|
| 952 |
# if TARGET_LONG_BITS == 64 |
| 953 |
uint8_t *label3_ptr; |
| 954 |
TCGReg addr_regh; |
| 955 |
int addr_memh;
|
| 956 |
# endif
|
| 957 |
#endif
|
| 958 |
data_regl = *args++; |
| 959 |
if (opc == 3) |
| 960 |
data_regh = *args++; |
| 961 |
else
|
| 962 |
data_regh = 0;
|
| 963 |
addr_regl = *args++; |
| 964 |
#if defined(CONFIG_SOFTMMU)
|
| 965 |
# if TARGET_LONG_BITS == 64 |
| 966 |
addr_regh = *args++; |
| 967 |
# if defined(TCG_TARGET_WORDS_BIGENDIAN)
|
| 968 |
addr_memh = 0;
|
| 969 |
addr_meml = 4;
|
| 970 |
# else
|
| 971 |
addr_memh = 4;
|
| 972 |
addr_meml = 0;
|
| 973 |
# endif
|
| 974 |
# else
|
| 975 |
addr_meml = 0;
|
| 976 |
# endif
|
| 977 |
mem_index = *args; |
| 978 |
s_bits = opc & 3;
|
| 979 |
#endif
|
| 980 |
|
| 981 |
if (opc == 3) { |
| 982 |
#if defined(TCG_TARGET_WORDS_BIGENDIAN)
|
| 983 |
data_reg1 = data_regh; |
| 984 |
data_reg2 = data_regl; |
| 985 |
#else
|
| 986 |
data_reg1 = data_regl; |
| 987 |
data_reg2 = data_regh; |
| 988 |
#endif
|
| 989 |
} else {
|
| 990 |
data_reg1 = data_regl; |
| 991 |
data_reg2 = 0;
|
| 992 |
} |
| 993 |
#if defined(CONFIG_SOFTMMU)
|
| 994 |
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_A0, addr_regl, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); |
| 995 |
tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_A0, TCG_REG_A0, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
|
| 996 |
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, TCG_AREG0); |
| 997 |
tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0, |
| 998 |
offsetof(CPUArchState, tlb_table[mem_index][0].addr_read) + addr_meml);
|
| 999 |
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T0, TARGET_PAGE_MASK | ((1 << s_bits) - 1)); |
| 1000 |
tcg_out_opc_reg(s, OPC_AND, TCG_REG_T0, TCG_REG_T0, addr_regl); |
| 1001 |
|
| 1002 |
# if TARGET_LONG_BITS == 64 |
| 1003 |
label3_ptr = s->code_ptr; |
| 1004 |
tcg_out_opc_br(s, OPC_BNE, TCG_REG_T0, TCG_REG_AT); |
| 1005 |
tcg_out_nop(s); |
| 1006 |
|
| 1007 |
tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0, |
| 1008 |
offsetof(CPUArchState, tlb_table[mem_index][0].addr_read) + addr_memh);
|
| 1009 |
|
| 1010 |
label1_ptr = s->code_ptr; |
| 1011 |
tcg_out_opc_br(s, OPC_BEQ, addr_regh, TCG_REG_AT); |
| 1012 |
tcg_out_nop(s); |
| 1013 |
|
| 1014 |
reloc_pc16(label3_ptr, (tcg_target_long) s->code_ptr); |
| 1015 |
# else
|
| 1016 |
label1_ptr = s->code_ptr; |
| 1017 |
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_T0, TCG_REG_AT); |
| 1018 |
tcg_out_nop(s); |
| 1019 |
# endif
|
| 1020 |
|
| 1021 |
/* slow path */
|
| 1022 |
arg_num = 0;
|
| 1023 |
tcg_out_call_iarg_reg32(s, &arg_num, TCG_AREG0); |
| 1024 |
# if TARGET_LONG_BITS == 64 |
| 1025 |
tcg_out_call_iarg_reg64(s, &arg_num, addr_regl, addr_regh); |
| 1026 |
# else
|
| 1027 |
tcg_out_call_iarg_reg32(s, &arg_num, addr_regl); |
| 1028 |
# endif
|
| 1029 |
tcg_out_call_iarg_imm32(s, &arg_num, mem_index); |
| 1030 |
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T9, (tcg_target_long)qemu_ld_helpers[s_bits]); |
| 1031 |
tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_REG_T9, 0);
|
| 1032 |
tcg_out_nop(s); |
| 1033 |
|
| 1034 |
switch(opc) {
|
| 1035 |
case 0: |
| 1036 |
tcg_out_opc_imm(s, OPC_ANDI, data_reg1, TCG_REG_V0, 0xff);
|
| 1037 |
break;
|
| 1038 |
case 0 | 4: |
| 1039 |
tcg_out_ext8s(s, data_reg1, TCG_REG_V0); |
| 1040 |
break;
|
| 1041 |
case 1: |
| 1042 |
tcg_out_opc_imm(s, OPC_ANDI, data_reg1, TCG_REG_V0, 0xffff);
|
| 1043 |
break;
|
| 1044 |
case 1 | 4: |
| 1045 |
tcg_out_ext16s(s, data_reg1, TCG_REG_V0); |
| 1046 |
break;
|
| 1047 |
case 2: |
| 1048 |
tcg_out_mov(s, TCG_TYPE_I32, data_reg1, TCG_REG_V0); |
| 1049 |
break;
|
| 1050 |
case 3: |
| 1051 |
tcg_out_mov(s, TCG_TYPE_I32, data_reg2, TCG_REG_V1); |
| 1052 |
tcg_out_mov(s, TCG_TYPE_I32, data_reg1, TCG_REG_V0); |
| 1053 |
break;
|
| 1054 |
default:
|
| 1055 |
tcg_abort(); |
| 1056 |
} |
| 1057 |
|
| 1058 |
label2_ptr = s->code_ptr; |
| 1059 |
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_ZERO, TCG_REG_ZERO); |
| 1060 |
tcg_out_nop(s); |
| 1061 |
|
| 1062 |
/* label1: fast path */
|
| 1063 |
reloc_pc16(label1_ptr, (tcg_target_long) s->code_ptr); |
| 1064 |
|
| 1065 |
tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0, |
| 1066 |
offsetof(CPUArchState, tlb_table[mem_index][0].addend));
|
| 1067 |
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_V0, TCG_REG_A0, addr_regl); |
| 1068 |
#else
|
| 1069 |
if (GUEST_BASE == (int16_t)GUEST_BASE) {
|
| 1070 |
tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_V0, addr_regl, GUEST_BASE); |
| 1071 |
} else {
|
| 1072 |
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_V0, GUEST_BASE); |
| 1073 |
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_V0, TCG_REG_V0, addr_regl); |
| 1074 |
} |
| 1075 |
#endif
|
| 1076 |
|
| 1077 |
switch(opc) {
|
| 1078 |
case 0: |
| 1079 |
tcg_out_opc_imm(s, OPC_LBU, data_reg1, TCG_REG_V0, 0);
|
| 1080 |
break;
|
| 1081 |
case 0 | 4: |
| 1082 |
tcg_out_opc_imm(s, OPC_LB, data_reg1, TCG_REG_V0, 0);
|
| 1083 |
break;
|
| 1084 |
case 1: |
| 1085 |
if (TCG_NEED_BSWAP) {
|
| 1086 |
tcg_out_opc_imm(s, OPC_LHU, TCG_REG_T0, TCG_REG_V0, 0);
|
| 1087 |
tcg_out_bswap16(s, data_reg1, TCG_REG_T0); |
| 1088 |
} else {
|
| 1089 |
tcg_out_opc_imm(s, OPC_LHU, data_reg1, TCG_REG_V0, 0);
|
| 1090 |
} |
| 1091 |
break;
|
| 1092 |
case 1 | 4: |
| 1093 |
if (TCG_NEED_BSWAP) {
|
| 1094 |
tcg_out_opc_imm(s, OPC_LHU, TCG_REG_T0, TCG_REG_V0, 0);
|
| 1095 |
tcg_out_bswap16s(s, data_reg1, TCG_REG_T0); |
| 1096 |
} else {
|
| 1097 |
tcg_out_opc_imm(s, OPC_LH, data_reg1, TCG_REG_V0, 0);
|
| 1098 |
} |
| 1099 |
break;
|
| 1100 |
case 2: |
| 1101 |
if (TCG_NEED_BSWAP) {
|
| 1102 |
tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, TCG_REG_V0, 0);
|
| 1103 |
tcg_out_bswap32(s, data_reg1, TCG_REG_T0); |
| 1104 |
} else {
|
| 1105 |
tcg_out_opc_imm(s, OPC_LW, data_reg1, TCG_REG_V0, 0);
|
| 1106 |
} |
| 1107 |
break;
|
| 1108 |
case 3: |
| 1109 |
if (TCG_NEED_BSWAP) {
|
| 1110 |
tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, TCG_REG_V0, 4);
|
| 1111 |
tcg_out_bswap32(s, data_reg1, TCG_REG_T0); |
| 1112 |
tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, TCG_REG_V0, 0);
|
| 1113 |
tcg_out_bswap32(s, data_reg2, TCG_REG_T0); |
| 1114 |
} else {
|
| 1115 |
tcg_out_opc_imm(s, OPC_LW, data_reg1, TCG_REG_V0, 0);
|
| 1116 |
tcg_out_opc_imm(s, OPC_LW, data_reg2, TCG_REG_V0, 4);
|
| 1117 |
} |
| 1118 |
break;
|
| 1119 |
default:
|
| 1120 |
tcg_abort(); |
| 1121 |
} |
| 1122 |
|
| 1123 |
#if defined(CONFIG_SOFTMMU)
|
| 1124 |
reloc_pc16(label2_ptr, (tcg_target_long) s->code_ptr); |
| 1125 |
#endif
|
| 1126 |
} |
| 1127 |
|
| 1128 |
static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, |
| 1129 |
int opc)
|
| 1130 |
{
|
| 1131 |
TCGReg addr_regl, data_regl, data_regh, data_reg1, data_reg2; |
| 1132 |
#if defined(CONFIG_SOFTMMU)
|
| 1133 |
uint8_t *label1_ptr, *label2_ptr; |
| 1134 |
int arg_num;
|
| 1135 |
int mem_index, s_bits;
|
| 1136 |
int addr_meml;
|
| 1137 |
#endif
|
| 1138 |
#if TARGET_LONG_BITS == 64 |
| 1139 |
# if defined(CONFIG_SOFTMMU)
|
| 1140 |
uint8_t *label3_ptr; |
| 1141 |
TCGReg addr_regh; |
| 1142 |
int addr_memh;
|
| 1143 |
# endif
|
| 1144 |
#endif
|
| 1145 |
data_regl = *args++; |
| 1146 |
if (opc == 3) { |
| 1147 |
data_regh = *args++; |
| 1148 |
} else {
|
| 1149 |
data_regh = 0;
|
| 1150 |
} |
| 1151 |
addr_regl = *args++; |
| 1152 |
#if defined(CONFIG_SOFTMMU)
|
| 1153 |
# if TARGET_LONG_BITS == 64 |
| 1154 |
addr_regh = *args++; |
| 1155 |
# if defined(TCG_TARGET_WORDS_BIGENDIAN)
|
| 1156 |
addr_memh = 0;
|
| 1157 |
addr_meml = 4;
|
| 1158 |
# else
|
| 1159 |
addr_memh = 4;
|
| 1160 |
addr_meml = 0;
|
| 1161 |
# endif
|
| 1162 |
# else
|
| 1163 |
addr_meml = 0;
|
| 1164 |
# endif
|
| 1165 |
mem_index = *args; |
| 1166 |
s_bits = opc; |
| 1167 |
#endif
|
| 1168 |
|
| 1169 |
if (opc == 3) { |
| 1170 |
#if defined(TCG_TARGET_WORDS_BIGENDIAN)
|
| 1171 |
data_reg1 = data_regh; |
| 1172 |
data_reg2 = data_regl; |
| 1173 |
#else
|
| 1174 |
data_reg1 = data_regl; |
| 1175 |
data_reg2 = data_regh; |
| 1176 |
#endif
|
| 1177 |
} else {
|
| 1178 |
data_reg1 = data_regl; |
| 1179 |
data_reg2 = 0;
|
| 1180 |
} |
| 1181 |
|
| 1182 |
#if defined(CONFIG_SOFTMMU)
|
| 1183 |
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_A0, addr_regl, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); |
| 1184 |
tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_A0, TCG_REG_A0, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
|
| 1185 |
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, TCG_AREG0); |
| 1186 |
tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0, |
| 1187 |
offsetof(CPUArchState, tlb_table[mem_index][0].addr_write) + addr_meml);
|
| 1188 |
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T0, TARGET_PAGE_MASK | ((1 << s_bits) - 1)); |
| 1189 |
tcg_out_opc_reg(s, OPC_AND, TCG_REG_T0, TCG_REG_T0, addr_regl); |
| 1190 |
|
| 1191 |
# if TARGET_LONG_BITS == 64 |
| 1192 |
label3_ptr = s->code_ptr; |
| 1193 |
tcg_out_opc_br(s, OPC_BNE, TCG_REG_T0, TCG_REG_AT); |
| 1194 |
tcg_out_nop(s); |
| 1195 |
|
| 1196 |
tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0, |
| 1197 |
offsetof(CPUArchState, tlb_table[mem_index][0].addr_write) + addr_memh);
|
| 1198 |
|
| 1199 |
label1_ptr = s->code_ptr; |
| 1200 |
tcg_out_opc_br(s, OPC_BEQ, addr_regh, TCG_REG_AT); |
| 1201 |
tcg_out_nop(s); |
| 1202 |
|
| 1203 |
reloc_pc16(label3_ptr, (tcg_target_long) s->code_ptr); |
| 1204 |
# else
|
| 1205 |
label1_ptr = s->code_ptr; |
| 1206 |
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_T0, TCG_REG_AT); |
| 1207 |
tcg_out_nop(s); |
| 1208 |
# endif
|
| 1209 |
|
| 1210 |
/* slow path */
|
| 1211 |
arg_num = 0;
|
| 1212 |
tcg_out_call_iarg_reg32(s, &arg_num, TCG_AREG0); |
| 1213 |
# if TARGET_LONG_BITS == 64 |
| 1214 |
tcg_out_call_iarg_reg64(s, &arg_num, addr_regl, addr_regh); |
| 1215 |
# else
|
| 1216 |
tcg_out_call_iarg_reg32(s, &arg_num, addr_regl); |
| 1217 |
# endif
|
| 1218 |
switch(opc) {
|
| 1219 |
case 0: |
| 1220 |
tcg_out_call_iarg_reg8(s, &arg_num, data_regl); |
| 1221 |
break;
|
| 1222 |
case 1: |
| 1223 |
tcg_out_call_iarg_reg16(s, &arg_num, data_regl); |
| 1224 |
break;
|
| 1225 |
case 2: |
| 1226 |
tcg_out_call_iarg_reg32(s, &arg_num, data_regl); |
| 1227 |
break;
|
| 1228 |
case 3: |
| 1229 |
tcg_out_call_iarg_reg64(s, &arg_num, data_regl, data_regh); |
| 1230 |
break;
|
| 1231 |
default:
|
| 1232 |
tcg_abort(); |
| 1233 |
} |
| 1234 |
tcg_out_call_iarg_imm32(s, &arg_num, mem_index); |
| 1235 |
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T9, (tcg_target_long)qemu_st_helpers[s_bits]); |
| 1236 |
tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_REG_T9, 0);
|
| 1237 |
tcg_out_nop(s); |
| 1238 |
|
| 1239 |
label2_ptr = s->code_ptr; |
| 1240 |
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_ZERO, TCG_REG_ZERO); |
| 1241 |
tcg_out_nop(s); |
| 1242 |
|
| 1243 |
/* label1: fast path */
|
| 1244 |
reloc_pc16(label1_ptr, (tcg_target_long) s->code_ptr); |
| 1245 |
|
| 1246 |
tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0, |
| 1247 |
offsetof(CPUArchState, tlb_table[mem_index][0].addend));
|
| 1248 |
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, addr_regl); |
| 1249 |
#else
|
| 1250 |
if (GUEST_BASE == (int16_t)GUEST_BASE) {
|
| 1251 |
tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_A0, addr_regl, GUEST_BASE); |
| 1252 |
} else {
|
| 1253 |
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A0, GUEST_BASE); |
| 1254 |
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, addr_regl); |
| 1255 |
} |
| 1256 |
|
| 1257 |
#endif
|
| 1258 |
|
| 1259 |
switch(opc) {
|
| 1260 |
case 0: |
| 1261 |
tcg_out_opc_imm(s, OPC_SB, data_reg1, TCG_REG_A0, 0);
|
| 1262 |
break;
|
| 1263 |
case 1: |
| 1264 |
if (TCG_NEED_BSWAP) {
|
| 1265 |
tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_T0, data_reg1, 0xffff);
|
| 1266 |
tcg_out_bswap16(s, TCG_REG_T0, TCG_REG_T0); |
| 1267 |
tcg_out_opc_imm(s, OPC_SH, TCG_REG_T0, TCG_REG_A0, 0);
|
| 1268 |
} else {
|
| 1269 |
tcg_out_opc_imm(s, OPC_SH, data_reg1, TCG_REG_A0, 0);
|
| 1270 |
} |
| 1271 |
break;
|
| 1272 |
case 2: |
| 1273 |
if (TCG_NEED_BSWAP) {
|
| 1274 |
tcg_out_bswap32(s, TCG_REG_T0, data_reg1); |
| 1275 |
tcg_out_opc_imm(s, OPC_SW, TCG_REG_T0, TCG_REG_A0, 0);
|
| 1276 |
} else {
|
| 1277 |
tcg_out_opc_imm(s, OPC_SW, data_reg1, TCG_REG_A0, 0);
|
| 1278 |
} |
| 1279 |
break;
|
| 1280 |
case 3: |
| 1281 |
if (TCG_NEED_BSWAP) {
|
| 1282 |
tcg_out_bswap32(s, TCG_REG_T0, data_reg2); |
| 1283 |
tcg_out_opc_imm(s, OPC_SW, TCG_REG_T0, TCG_REG_A0, 0);
|
| 1284 |
tcg_out_bswap32(s, TCG_REG_T0, data_reg1); |
| 1285 |
tcg_out_opc_imm(s, OPC_SW, TCG_REG_T0, TCG_REG_A0, 4);
|
| 1286 |
} else {
|
| 1287 |
tcg_out_opc_imm(s, OPC_SW, data_reg1, TCG_REG_A0, 0);
|
| 1288 |
tcg_out_opc_imm(s, OPC_SW, data_reg2, TCG_REG_A0, 4);
|
| 1289 |
} |
| 1290 |
break;
|
| 1291 |
default:
|
| 1292 |
tcg_abort(); |
| 1293 |
} |
| 1294 |
|
| 1295 |
#if defined(CONFIG_SOFTMMU)
|
| 1296 |
reloc_pc16(label2_ptr, (tcg_target_long) s->code_ptr); |
| 1297 |
#endif
|
| 1298 |
} |
| 1299 |
|
| 1300 |
static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, |
| 1301 |
const TCGArg *args, const int *const_args) |
| 1302 |
{
|
| 1303 |
switch(opc) {
|
| 1304 |
case INDEX_op_exit_tb:
|
| 1305 |
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_V0, args[0]);
|
| 1306 |
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_AT, (tcg_target_long)tb_ret_addr); |
| 1307 |
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_AT, 0); |
| 1308 |
tcg_out_nop(s); |
| 1309 |
break;
|
| 1310 |
case INDEX_op_goto_tb:
|
| 1311 |
if (s->tb_jmp_offset) {
|
| 1312 |
/* direct jump method */
|
| 1313 |
tcg_abort(); |
| 1314 |
} else {
|
| 1315 |
/* indirect jump method */
|
| 1316 |
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, (tcg_target_long)(s->tb_next + args[0]));
|
| 1317 |
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_AT, TCG_REG_AT, 0);
|
| 1318 |
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_AT, 0); |
| 1319 |
} |
| 1320 |
tcg_out_nop(s); |
| 1321 |
s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
|
| 1322 |
break;
|
| 1323 |
case INDEX_op_call:
|
| 1324 |
tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, args[0], 0); |
| 1325 |
tcg_out_nop(s); |
| 1326 |
break;
|
| 1327 |
case INDEX_op_br:
|
| 1328 |
tcg_out_brcond(s, TCG_COND_EQ, TCG_REG_ZERO, TCG_REG_ZERO, args[0]);
|
| 1329 |
break;
|
| 1330 |
|
| 1331 |
case INDEX_op_mov_i32:
|
| 1332 |
tcg_out_mov(s, TCG_TYPE_I32, args[0], args[1]); |
| 1333 |
break;
|
| 1334 |
case INDEX_op_movi_i32:
|
| 1335 |
tcg_out_movi(s, TCG_TYPE_I32, args[0], args[1]); |
| 1336 |
break;
|
| 1337 |
|
| 1338 |
case INDEX_op_ld8u_i32:
|
| 1339 |
tcg_out_ldst(s, OPC_LBU, args[0], args[1], args[2]); |
| 1340 |
break;
|
| 1341 |
case INDEX_op_ld8s_i32:
|
| 1342 |
tcg_out_ldst(s, OPC_LB, args[0], args[1], args[2]); |
| 1343 |
break;
|
| 1344 |
case INDEX_op_ld16u_i32:
|
| 1345 |
tcg_out_ldst(s, OPC_LHU, args[0], args[1], args[2]); |
| 1346 |
break;
|
| 1347 |
case INDEX_op_ld16s_i32:
|
| 1348 |
tcg_out_ldst(s, OPC_LH, args[0], args[1], args[2]); |
| 1349 |
break;
|
| 1350 |
case INDEX_op_ld_i32:
|
| 1351 |
tcg_out_ldst(s, OPC_LW, args[0], args[1], args[2]); |
| 1352 |
break;
|
| 1353 |
case INDEX_op_st8_i32:
|
| 1354 |
tcg_out_ldst(s, OPC_SB, args[0], args[1], args[2]); |
| 1355 |
break;
|
| 1356 |
case INDEX_op_st16_i32:
|
| 1357 |
tcg_out_ldst(s, OPC_SH, args[0], args[1], args[2]); |
| 1358 |
break;
|
| 1359 |
case INDEX_op_st_i32:
|
| 1360 |
tcg_out_ldst(s, OPC_SW, args[0], args[1], args[2]); |
| 1361 |
break;
|
| 1362 |
|
| 1363 |
case INDEX_op_add_i32:
|
| 1364 |
if (const_args[2]) { |
| 1365 |
tcg_out_opc_imm(s, OPC_ADDIU, args[0], args[1], args[2]); |
| 1366 |
} else {
|
| 1367 |
tcg_out_opc_reg(s, OPC_ADDU, args[0], args[1], args[2]); |
| 1368 |
} |
| 1369 |
break;
|
| 1370 |
case INDEX_op_add2_i32:
|
| 1371 |
if (const_args[4]) { |
| 1372 |
tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_AT, args[2], args[4]); |
| 1373 |
} else {
|
| 1374 |
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_AT, args[2], args[4]); |
| 1375 |
} |
| 1376 |
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_T0, TCG_REG_AT, args[2]);
|
| 1377 |
if (const_args[5]) { |
| 1378 |
tcg_out_opc_imm(s, OPC_ADDIU, args[1], args[3], args[5]); |
| 1379 |
} else {
|
| 1380 |
tcg_out_opc_reg(s, OPC_ADDU, args[1], args[3], args[5]); |
| 1381 |
} |
| 1382 |
tcg_out_opc_reg(s, OPC_ADDU, args[1], args[1], TCG_REG_T0); |
| 1383 |
tcg_out_mov(s, TCG_TYPE_I32, args[0], TCG_REG_AT);
|
| 1384 |
break;
|
| 1385 |
case INDEX_op_sub_i32:
|
| 1386 |
if (const_args[2]) { |
| 1387 |
tcg_out_opc_imm(s, OPC_ADDIU, args[0], args[1], -args[2]); |
| 1388 |
} else {
|
| 1389 |
tcg_out_opc_reg(s, OPC_SUBU, args[0], args[1], args[2]); |
| 1390 |
} |
| 1391 |
break;
|
| 1392 |
case INDEX_op_sub2_i32:
|
| 1393 |
if (const_args[4]) { |
| 1394 |
tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_AT, args[2], -args[4]); |
| 1395 |
} else {
|
| 1396 |
tcg_out_opc_reg(s, OPC_SUBU, TCG_REG_AT, args[2], args[4]); |
| 1397 |
} |
| 1398 |
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_T0, args[2], TCG_REG_AT);
|
| 1399 |
if (const_args[5]) { |
| 1400 |
tcg_out_opc_imm(s, OPC_ADDIU, args[1], args[3], -args[5]); |
| 1401 |
} else {
|
| 1402 |
tcg_out_opc_reg(s, OPC_SUBU, args[1], args[3], args[5]); |
| 1403 |
} |
| 1404 |
tcg_out_opc_reg(s, OPC_SUBU, args[1], args[1], TCG_REG_T0); |
| 1405 |
tcg_out_mov(s, TCG_TYPE_I32, args[0], TCG_REG_AT);
|
| 1406 |
break;
|
| 1407 |
case INDEX_op_mul_i32:
|
| 1408 |
if (use_mips32_instructions) {
|
| 1409 |
tcg_out_opc_reg(s, OPC_MUL, args[0], args[1], args[2]); |
| 1410 |
} else {
|
| 1411 |
tcg_out_opc_reg(s, OPC_MULT, 0, args[1], args[2]); |
| 1412 |
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0); |
| 1413 |
} |
| 1414 |
break;
|
| 1415 |
case INDEX_op_muls2_i32:
|
| 1416 |
tcg_out_opc_reg(s, OPC_MULT, 0, args[2], args[3]); |
| 1417 |
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0); |
| 1418 |
tcg_out_opc_reg(s, OPC_MFHI, args[1], 0, 0); |
| 1419 |
break;
|
| 1420 |
case INDEX_op_mulu2_i32:
|
| 1421 |
tcg_out_opc_reg(s, OPC_MULTU, 0, args[2], args[3]); |
| 1422 |
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0); |
| 1423 |
tcg_out_opc_reg(s, OPC_MFHI, args[1], 0, 0); |
| 1424 |
break;
|
| 1425 |
case INDEX_op_mulsh_i32:
|
| 1426 |
tcg_out_opc_reg(s, OPC_MULT, 0, args[1], args[2]); |
| 1427 |
tcg_out_opc_reg(s, OPC_MFHI, args[0], 0, 0); |
| 1428 |
break;
|
| 1429 |
case INDEX_op_muluh_i32:
|
| 1430 |
tcg_out_opc_reg(s, OPC_MULTU, 0, args[1], args[2]); |
| 1431 |
tcg_out_opc_reg(s, OPC_MFHI, args[0], 0, 0); |
| 1432 |
break;
|
| 1433 |
case INDEX_op_div_i32:
|
| 1434 |
tcg_out_opc_reg(s, OPC_DIV, 0, args[1], args[2]); |
| 1435 |
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0); |
| 1436 |
break;
|
| 1437 |
case INDEX_op_divu_i32:
|
| 1438 |
tcg_out_opc_reg(s, OPC_DIVU, 0, args[1], args[2]); |
| 1439 |
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0); |
| 1440 |
break;
|
| 1441 |
case INDEX_op_rem_i32:
|
| 1442 |
tcg_out_opc_reg(s, OPC_DIV, 0, args[1], args[2]); |
| 1443 |
tcg_out_opc_reg(s, OPC_MFHI, args[0], 0, 0); |
| 1444 |
break;
|
| 1445 |
case INDEX_op_remu_i32:
|
| 1446 |
tcg_out_opc_reg(s, OPC_DIVU, 0, args[1], args[2]); |
| 1447 |
tcg_out_opc_reg(s, OPC_MFHI, args[0], 0, 0); |
| 1448 |
break;
|
| 1449 |
|
| 1450 |
case INDEX_op_and_i32:
|
| 1451 |
if (const_args[2]) { |
| 1452 |
tcg_out_opc_imm(s, OPC_ANDI, args[0], args[1], args[2]); |
| 1453 |
} else {
|
| 1454 |
tcg_out_opc_reg(s, OPC_AND, args[0], args[1], args[2]); |
| 1455 |
} |
| 1456 |
break;
|
| 1457 |
case INDEX_op_or_i32:
|
| 1458 |
if (const_args[2]) { |
| 1459 |
tcg_out_opc_imm(s, OPC_ORI, args[0], args[1], args[2]); |
| 1460 |
} else {
|
| 1461 |
tcg_out_opc_reg(s, OPC_OR, args[0], args[1], args[2]); |
| 1462 |
} |
| 1463 |
break;
|
| 1464 |
case INDEX_op_nor_i32:
|
| 1465 |
tcg_out_opc_reg(s, OPC_NOR, args[0], args[1], args[2]); |
| 1466 |
break;
|
| 1467 |
case INDEX_op_not_i32:
|
| 1468 |
tcg_out_opc_reg(s, OPC_NOR, args[0], TCG_REG_ZERO, args[1]); |
| 1469 |
break;
|
| 1470 |
case INDEX_op_xor_i32:
|
| 1471 |
if (const_args[2]) { |
| 1472 |
tcg_out_opc_imm(s, OPC_XORI, args[0], args[1], args[2]); |
| 1473 |
} else {
|
| 1474 |
tcg_out_opc_reg(s, OPC_XOR, args[0], args[1], args[2]); |
| 1475 |
} |
| 1476 |
break;
|
| 1477 |
|
| 1478 |
case INDEX_op_sar_i32:
|
| 1479 |
if (const_args[2]) { |
| 1480 |
tcg_out_opc_sa(s, OPC_SRA, args[0], args[1], args[2]); |
| 1481 |
} else {
|
| 1482 |
tcg_out_opc_reg(s, OPC_SRAV, args[0], args[2], args[1]); |
| 1483 |
} |
| 1484 |
break;
|
| 1485 |
case INDEX_op_shl_i32:
|
| 1486 |
if (const_args[2]) { |
| 1487 |
tcg_out_opc_sa(s, OPC_SLL, args[0], args[1], args[2]); |
| 1488 |
} else {
|
| 1489 |
tcg_out_opc_reg(s, OPC_SLLV, args[0], args[2], args[1]); |
| 1490 |
} |
| 1491 |
break;
|
| 1492 |
case INDEX_op_shr_i32:
|
| 1493 |
if (const_args[2]) { |
| 1494 |
tcg_out_opc_sa(s, OPC_SRL, args[0], args[1], args[2]); |
| 1495 |
} else {
|
| 1496 |
tcg_out_opc_reg(s, OPC_SRLV, args[0], args[2], args[1]); |
| 1497 |
} |
| 1498 |
break;
|
| 1499 |
case INDEX_op_rotl_i32:
|
| 1500 |
if (const_args[2]) { |
| 1501 |
tcg_out_opc_sa(s, OPC_ROTR, args[0], args[1], 0x20 - args[2]); |
| 1502 |
} else {
|
| 1503 |
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_AT, 32);
|
| 1504 |
tcg_out_opc_reg(s, OPC_SUBU, TCG_REG_AT, TCG_REG_AT, args[2]);
|
| 1505 |
tcg_out_opc_reg(s, OPC_ROTRV, args[0], TCG_REG_AT, args[1]); |
| 1506 |
} |
| 1507 |
break;
|
| 1508 |
case INDEX_op_rotr_i32:
|
| 1509 |
if (const_args[2]) { |
| 1510 |
tcg_out_opc_sa(s, OPC_ROTR, args[0], args[1], args[2]); |
| 1511 |
} else {
|
| 1512 |
tcg_out_opc_reg(s, OPC_ROTRV, args[0], args[2], args[1]); |
| 1513 |
} |
| 1514 |
break;
|
| 1515 |
|
| 1516 |
case INDEX_op_bswap16_i32:
|
| 1517 |
tcg_out_opc_reg(s, OPC_WSBH, args[0], 0, args[1]); |
| 1518 |
break;
|
| 1519 |
case INDEX_op_bswap32_i32:
|
| 1520 |
tcg_out_opc_reg(s, OPC_WSBH, args[0], 0, args[1]); |
| 1521 |
tcg_out_opc_sa(s, OPC_ROTR, args[0], args[0], 16); |
| 1522 |
break;
|
| 1523 |
|
| 1524 |
case INDEX_op_ext8s_i32:
|
| 1525 |
tcg_out_opc_reg(s, OPC_SEB, args[0], 0, args[1]); |
| 1526 |
break;
|
| 1527 |
case INDEX_op_ext16s_i32:
|
| 1528 |
tcg_out_opc_reg(s, OPC_SEH, args[0], 0, args[1]); |
| 1529 |
break;
|
| 1530 |
|
| 1531 |
case INDEX_op_deposit_i32:
|
| 1532 |
tcg_out_opc_imm(s, OPC_INS, args[0], args[2], |
| 1533 |
((args[3] + args[4] - 1) << 11) | (args[3] << 6)); |
| 1534 |
break;
|
| 1535 |
|
| 1536 |
case INDEX_op_brcond_i32:
|
| 1537 |
tcg_out_brcond(s, args[2], args[0], args[1], args[3]); |
| 1538 |
break;
|
| 1539 |
case INDEX_op_brcond2_i32:
|
| 1540 |
tcg_out_brcond2(s, args[4], args[0], args[1], args[2], args[3], args[5]); |
| 1541 |
break;
|
| 1542 |
|
| 1543 |
case INDEX_op_movcond_i32:
|
| 1544 |
tcg_out_movcond(s, args[5], args[0], args[1], args[2], args[3]); |
| 1545 |
break;
|
| 1546 |
|
| 1547 |
case INDEX_op_setcond_i32:
|
| 1548 |
tcg_out_setcond(s, args[3], args[0], args[1], args[2]); |
| 1549 |
break;
|
| 1550 |
case INDEX_op_setcond2_i32:
|
| 1551 |
tcg_out_setcond2(s, args[5], args[0], args[1], args[2], args[3], args[4]); |
| 1552 |
break;
|
| 1553 |
|
| 1554 |
case INDEX_op_qemu_ld8u:
|
| 1555 |
tcg_out_qemu_ld(s, args, 0);
|
| 1556 |
break;
|
| 1557 |
case INDEX_op_qemu_ld8s:
|
| 1558 |
tcg_out_qemu_ld(s, args, 0 | 4); |
| 1559 |
break;
|
| 1560 |
case INDEX_op_qemu_ld16u:
|
| 1561 |
tcg_out_qemu_ld(s, args, 1);
|
| 1562 |
break;
|
| 1563 |
case INDEX_op_qemu_ld16s:
|
| 1564 |
tcg_out_qemu_ld(s, args, 1 | 4); |
| 1565 |
break;
|
| 1566 |
case INDEX_op_qemu_ld32:
|
| 1567 |
tcg_out_qemu_ld(s, args, 2);
|
| 1568 |
break;
|
| 1569 |
case INDEX_op_qemu_ld64:
|
| 1570 |
tcg_out_qemu_ld(s, args, 3);
|
| 1571 |
break;
|
| 1572 |
case INDEX_op_qemu_st8:
|
| 1573 |
tcg_out_qemu_st(s, args, 0);
|
| 1574 |
break;
|
| 1575 |
case INDEX_op_qemu_st16:
|
| 1576 |
tcg_out_qemu_st(s, args, 1);
|
| 1577 |
break;
|
| 1578 |
case INDEX_op_qemu_st32:
|
| 1579 |
tcg_out_qemu_st(s, args, 2);
|
| 1580 |
break;
|
| 1581 |
case INDEX_op_qemu_st64:
|
| 1582 |
tcg_out_qemu_st(s, args, 3);
|
| 1583 |
break;
|
| 1584 |
|
| 1585 |
default:
|
| 1586 |
tcg_abort(); |
| 1587 |
} |
| 1588 |
} |
| 1589 |
|
| 1590 |
static const TCGTargetOpDef mips_op_defs[] = { |
| 1591 |
{ INDEX_op_exit_tb, { } },
|
| 1592 |
{ INDEX_op_goto_tb, { } },
|
| 1593 |
{ INDEX_op_call, { "C" } },
|
| 1594 |
{ INDEX_op_br, { } },
|
| 1595 |
|
| 1596 |
{ INDEX_op_mov_i32, { "r", "r" } },
|
| 1597 |
{ INDEX_op_movi_i32, { "r" } },
|
| 1598 |
{ INDEX_op_ld8u_i32, { "r", "r" } },
|
| 1599 |
{ INDEX_op_ld8s_i32, { "r", "r" } },
|
| 1600 |
{ INDEX_op_ld16u_i32, { "r", "r" } },
|
| 1601 |
{ INDEX_op_ld16s_i32, { "r", "r" } },
|
| 1602 |
{ INDEX_op_ld_i32, { "r", "r" } },
|
| 1603 |
{ INDEX_op_st8_i32, { "rZ", "r" } },
|
| 1604 |
{ INDEX_op_st16_i32, { "rZ", "r" } },
|
| 1605 |
{ INDEX_op_st_i32, { "rZ", "r" } },
|
| 1606 |
|
| 1607 |
{ INDEX_op_add_i32, { "r", "rZ", "rJ" } },
|
| 1608 |
{ INDEX_op_mul_i32, { "r", "rZ", "rZ" } },
|
| 1609 |
{ INDEX_op_muls2_i32, { "r", "r", "rZ", "rZ" } },
|
| 1610 |
{ INDEX_op_mulu2_i32, { "r", "r", "rZ", "rZ" } },
|
| 1611 |
{ INDEX_op_mulsh_i32, { "r", "rZ", "rZ" } },
|
| 1612 |
{ INDEX_op_muluh_i32, { "r", "rZ", "rZ" } },
|
| 1613 |
{ INDEX_op_div_i32, { "r", "rZ", "rZ" } },
|
| 1614 |
{ INDEX_op_divu_i32, { "r", "rZ", "rZ" } },
|
| 1615 |
{ INDEX_op_rem_i32, { "r", "rZ", "rZ" } },
|
| 1616 |
{ INDEX_op_remu_i32, { "r", "rZ", "rZ" } },
|
| 1617 |
{ INDEX_op_sub_i32, { "r", "rZ", "rJ" } },
|
| 1618 |
|
| 1619 |
{ INDEX_op_and_i32, { "r", "rZ", "rI" } },
|
| 1620 |
{ INDEX_op_nor_i32, { "r", "rZ", "rZ" } },
|
| 1621 |
{ INDEX_op_not_i32, { "r", "rZ" } },
|
| 1622 |
{ INDEX_op_or_i32, { "r", "rZ", "rIZ" } },
|
| 1623 |
{ INDEX_op_xor_i32, { "r", "rZ", "rIZ" } },
|
| 1624 |
|
| 1625 |
{ INDEX_op_shl_i32, { "r", "rZ", "ri" } },
|
| 1626 |
{ INDEX_op_shr_i32, { "r", "rZ", "ri" } },
|
| 1627 |
{ INDEX_op_sar_i32, { "r", "rZ", "ri" } },
|
| 1628 |
{ INDEX_op_rotr_i32, { "r", "rZ", "ri" } },
|
| 1629 |
{ INDEX_op_rotl_i32, { "r", "rZ", "ri" } },
|
| 1630 |
|
| 1631 |
{ INDEX_op_bswap16_i32, { "r", "r" } },
|
| 1632 |
{ INDEX_op_bswap32_i32, { "r", "r" } },
|
| 1633 |
|
| 1634 |
{ INDEX_op_ext8s_i32, { "r", "rZ" } },
|
| 1635 |
{ INDEX_op_ext16s_i32, { "r", "rZ" } },
|
| 1636 |
|
| 1637 |
{ INDEX_op_deposit_i32, { "r", "0", "rZ" } },
|
| 1638 |
|
| 1639 |
{ INDEX_op_brcond_i32, { "rZ", "rZ" } },
|
| 1640 |
{ INDEX_op_movcond_i32, { "r", "rZ", "rZ", "rZ", "0" } },
|
| 1641 |
{ INDEX_op_setcond_i32, { "r", "rZ", "rZ" } },
|
| 1642 |
{ INDEX_op_setcond2_i32, { "r", "rZ", "rZ", "rZ", "rZ" } },
|
| 1643 |
|
| 1644 |
{ INDEX_op_add2_i32, { "r", "r", "rZ", "rZ", "rJ", "rJ" } },
|
| 1645 |
{ INDEX_op_sub2_i32, { "r", "r", "rZ", "rZ", "rJ", "rJ" } },
|
| 1646 |
{ INDEX_op_brcond2_i32, { "rZ", "rZ", "rZ", "rZ" } },
|
| 1647 |
|
| 1648 |
#if TARGET_LONG_BITS == 32 |
| 1649 |
{ INDEX_op_qemu_ld8u, { "L", "lZ" } },
|
| 1650 |
{ INDEX_op_qemu_ld8s, { "L", "lZ" } },
|
| 1651 |
{ INDEX_op_qemu_ld16u, { "L", "lZ" } },
|
| 1652 |
{ INDEX_op_qemu_ld16s, { "L", "lZ" } },
|
| 1653 |
{ INDEX_op_qemu_ld32, { "L", "lZ" } },
|
| 1654 |
{ INDEX_op_qemu_ld64, { "L", "L", "lZ" } },
|
| 1655 |
|
| 1656 |
{ INDEX_op_qemu_st8, { "SZ", "SZ" } },
|
| 1657 |
{ INDEX_op_qemu_st16, { "SZ", "SZ" } },
|
| 1658 |
{ INDEX_op_qemu_st32, { "SZ", "SZ" } },
|
| 1659 |
{ INDEX_op_qemu_st64, { "SZ", "SZ", "SZ" } },
|
| 1660 |
#else
|
| 1661 |
{ INDEX_op_qemu_ld8u, { "L", "lZ", "lZ" } },
|
| 1662 |
{ INDEX_op_qemu_ld8s, { "L", "lZ", "lZ" } },
|
| 1663 |
{ INDEX_op_qemu_ld16u, { "L", "lZ", "lZ" } },
|
| 1664 |
{ INDEX_op_qemu_ld16s, { "L", "lZ", "lZ" } },
|
| 1665 |
{ INDEX_op_qemu_ld32, { "L", "lZ", "lZ" } },
|
| 1666 |
{ INDEX_op_qemu_ld64, { "L", "L", "lZ", "lZ" } },
|
| 1667 |
|
| 1668 |
{ INDEX_op_qemu_st8, { "SZ", "SZ", "SZ" } },
|
| 1669 |
{ INDEX_op_qemu_st16, { "SZ", "SZ", "SZ" } },
|
| 1670 |
{ INDEX_op_qemu_st32, { "SZ", "SZ", "SZ" } },
|
| 1671 |
{ INDEX_op_qemu_st64, { "SZ", "SZ", "SZ", "SZ" } },
|
| 1672 |
#endif
|
| 1673 |
{ -1 },
|
| 1674 |
}; |
| 1675 |
|
| 1676 |
static int tcg_target_callee_save_regs[] = { |
| 1677 |
TCG_REG_S0, /* used for the global env (TCG_AREG0) */
|
| 1678 |
TCG_REG_S1, |
| 1679 |
TCG_REG_S2, |
| 1680 |
TCG_REG_S3, |
| 1681 |
TCG_REG_S4, |
| 1682 |
TCG_REG_S5, |
| 1683 |
TCG_REG_S6, |
| 1684 |
TCG_REG_S7, |
| 1685 |
TCG_REG_FP, |
| 1686 |
TCG_REG_RA, /* should be last for ABI compliance */
|
| 1687 |
}; |
| 1688 |
|
| 1689 |
/* The Linux kernel doesn't provide any information about the available
|
| 1690 |
instruction set. Probe it using a signal handler. */
|
| 1691 |
|
| 1692 |
#include <signal.h> |
| 1693 |
|
| 1694 |
#ifndef use_movnz_instructions
|
| 1695 |
bool use_movnz_instructions = false; |
| 1696 |
#endif
|
| 1697 |
|
| 1698 |
#ifndef use_mips32_instructions
|
| 1699 |
bool use_mips32_instructions = false; |
| 1700 |
#endif
|
| 1701 |
|
| 1702 |
#ifndef use_mips32r2_instructions
|
| 1703 |
bool use_mips32r2_instructions = false; |
| 1704 |
#endif
|
| 1705 |
|
| 1706 |
static volatile sig_atomic_t got_sigill; |
| 1707 |
|
| 1708 |
static void sigill_handler(int signo, siginfo_t *si, void *data) |
| 1709 |
{
|
| 1710 |
/* Skip the faulty instruction */
|
| 1711 |
ucontext_t *uc = (ucontext_t *)data; |
| 1712 |
uc->uc_mcontext.pc += 4;
|
| 1713 |
|
| 1714 |
got_sigill = 1;
|
| 1715 |
} |
| 1716 |
|
| 1717 |
static void tcg_target_detect_isa(void) |
| 1718 |
{
|
| 1719 |
struct sigaction sa_old, sa_new;
|
| 1720 |
|
| 1721 |
memset(&sa_new, 0, sizeof(sa_new)); |
| 1722 |
sa_new.sa_flags = SA_SIGINFO; |
| 1723 |
sa_new.sa_sigaction = sigill_handler; |
| 1724 |
sigaction(SIGILL, &sa_new, &sa_old); |
| 1725 |
|
| 1726 |
/* Probe for movn/movz, necessary to implement movcond. */
|
| 1727 |
#ifndef use_movnz_instructions
|
| 1728 |
got_sigill = 0;
|
| 1729 |
asm volatile(".set push\n" |
| 1730 |
".set mips32\n"
|
| 1731 |
"movn $zero, $zero, $zero\n"
|
| 1732 |
"movz $zero, $zero, $zero\n"
|
| 1733 |
".set pop\n"
|
| 1734 |
: : : ); |
| 1735 |
use_movnz_instructions = !got_sigill; |
| 1736 |
#endif
|
| 1737 |
|
| 1738 |
/* Probe for MIPS32 instructions. As no subsetting is allowed
|
| 1739 |
by the specification, it is only necessary to probe for one
|
| 1740 |
of the instructions. */
|
| 1741 |
#ifndef use_mips32_instructions
|
| 1742 |
got_sigill = 0;
|
| 1743 |
asm volatile(".set push\n" |
| 1744 |
".set mips32\n"
|
| 1745 |
"mul $zero, $zero\n"
|
| 1746 |
".set pop\n"
|
| 1747 |
: : : ); |
| 1748 |
use_mips32_instructions = !got_sigill; |
| 1749 |
#endif
|
| 1750 |
|
| 1751 |
/* Probe for MIPS32r2 instructions if MIPS32 instructions are
|
| 1752 |
available. As no subsetting is allowed by the specification,
|
| 1753 |
it is only necessary to probe for one of the instructions. */
|
| 1754 |
#ifndef use_mips32r2_instructions
|
| 1755 |
if (use_mips32_instructions) {
|
| 1756 |
got_sigill = 0;
|
| 1757 |
asm volatile(".set push\n" |
| 1758 |
".set mips32r2\n"
|
| 1759 |
"seb $zero, $zero\n"
|
| 1760 |
".set pop\n"
|
| 1761 |
: : : ); |
| 1762 |
use_mips32r2_instructions = !got_sigill; |
| 1763 |
} |
| 1764 |
#endif
|
| 1765 |
|
| 1766 |
sigaction(SIGILL, &sa_old, NULL);
|
| 1767 |
} |
| 1768 |
|
| 1769 |
/* Generate global QEMU prologue and epilogue code */
|
| 1770 |
static void tcg_target_qemu_prologue(TCGContext *s) |
| 1771 |
{
|
| 1772 |
int i, frame_size;
|
| 1773 |
|
| 1774 |
/* reserve some stack space, also for TCG temps. */
|
| 1775 |
frame_size = ARRAY_SIZE(tcg_target_callee_save_regs) * 4
|
| 1776 |
+ TCG_STATIC_CALL_ARGS_SIZE |
| 1777 |
+ CPU_TEMP_BUF_NLONGS * sizeof(long); |
| 1778 |
frame_size = (frame_size + TCG_TARGET_STACK_ALIGN - 1) &
|
| 1779 |
~(TCG_TARGET_STACK_ALIGN - 1);
|
| 1780 |
tcg_set_frame(s, TCG_REG_SP, ARRAY_SIZE(tcg_target_callee_save_regs) * 4
|
| 1781 |
+ TCG_STATIC_CALL_ARGS_SIZE, |
| 1782 |
CPU_TEMP_BUF_NLONGS * sizeof(long)); |
| 1783 |
|
| 1784 |
/* TB prologue */
|
| 1785 |
tcg_out_addi(s, TCG_REG_SP, -frame_size); |
| 1786 |
for(i = 0 ; i < ARRAY_SIZE(tcg_target_callee_save_regs) ; i++) { |
| 1787 |
tcg_out_st(s, TCG_TYPE_I32, tcg_target_callee_save_regs[i], |
| 1788 |
TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE + i * 4);
|
| 1789 |
} |
| 1790 |
|
| 1791 |
/* Call generated code */
|
| 1792 |
tcg_out_opc_reg(s, OPC_JR, 0, tcg_target_call_iarg_regs[1], 0); |
| 1793 |
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
|
| 1794 |
tb_ret_addr = s->code_ptr; |
| 1795 |
|
| 1796 |
/* TB epilogue */
|
| 1797 |
for(i = 0 ; i < ARRAY_SIZE(tcg_target_callee_save_regs) ; i++) { |
| 1798 |
tcg_out_ld(s, TCG_TYPE_I32, tcg_target_callee_save_regs[i], |
| 1799 |
TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE + i * 4);
|
| 1800 |
} |
| 1801 |
|
| 1802 |
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_RA, 0); |
| 1803 |
tcg_out_addi(s, TCG_REG_SP, frame_size); |
| 1804 |
} |
| 1805 |
|
| 1806 |
static void tcg_target_init(TCGContext *s) |
| 1807 |
{
|
| 1808 |
tcg_target_detect_isa(); |
| 1809 |
tcg_regset_set(tcg_target_available_regs[TCG_TYPE_I32], 0xffffffff);
|
| 1810 |
tcg_regset_set(tcg_target_call_clobber_regs, |
| 1811 |
(1 << TCG_REG_V0) |
|
| 1812 |
(1 << TCG_REG_V1) |
|
| 1813 |
(1 << TCG_REG_A0) |
|
| 1814 |
(1 << TCG_REG_A1) |
|
| 1815 |
(1 << TCG_REG_A2) |
|
| 1816 |
(1 << TCG_REG_A3) |
|
| 1817 |
(1 << TCG_REG_T1) |
|
| 1818 |
(1 << TCG_REG_T2) |
|
| 1819 |
(1 << TCG_REG_T3) |
|
| 1820 |
(1 << TCG_REG_T4) |
|
| 1821 |
(1 << TCG_REG_T5) |
|
| 1822 |
(1 << TCG_REG_T6) |
|
| 1823 |
(1 << TCG_REG_T7) |
|
| 1824 |
(1 << TCG_REG_T8) |
|
| 1825 |
(1 << TCG_REG_T9));
|
| 1826 |
|
| 1827 |
tcg_regset_clear(s->reserved_regs); |
| 1828 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_ZERO); /* zero register */
|
| 1829 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_K0); /* kernel use only */
|
| 1830 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_K1); /* kernel use only */
|
| 1831 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_AT); /* internal use */
|
| 1832 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_T0); /* internal use */
|
| 1833 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_RA); /* return address */
|
| 1834 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_SP); /* stack pointer */
|
| 1835 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_GP); /* global pointer */
|
| 1836 |
|
| 1837 |
tcg_add_target_add_op_defs(mips_op_defs); |
| 1838 |
} |