| /* |
| * Tiny Code Generator for QEMU |
| * |
| * Copyright (c) 2008-2009 Arnaud Patard <arnaud.patard@rtp-net.org> |
| * Copyright (c) 2009 Aurelien Jarno <aurelien@aurel32.net> |
| * Based on i386/tcg-target.c - Copyright (c) 2008 Fabrice Bellard |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| |
| #if defined(TCG_TARGET_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN) |
| # define TCG_NEED_BSWAP 0 |
| #else |
| # define TCG_NEED_BSWAP 1 |
| #endif |
| |
| #ifndef NDEBUG |
| static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { |
| "zero", |
| "at", |
| "v0", |
| "v1", |
| "a0", |
| "a1", |
| "a2", |
| "a3", |
| "t0", |
| "t1", |
| "t2", |
| "t3", |
| "t4", |
| "t5", |
| "t6", |
| "t7", |
| "s0", |
| "s1", |
| "s2", |
| "s3", |
| "s4", |
| "s5", |
| "s6", |
| "s7", |
| "t8", |
| "t9", |
| "k0", |
| "k1", |
| "gp", |
| "sp", |
| "fp", |
| "ra", |
| }; |
| #endif |
| |
| /* check if we really need so many registers :P */ |
| static const int tcg_target_reg_alloc_order[] = { |
| 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_T1, |
| TCG_REG_T2, |
| TCG_REG_T3, |
| TCG_REG_T4, |
| TCG_REG_T5, |
| TCG_REG_T6, |
| TCG_REG_T7, |
| TCG_REG_T8, |
| TCG_REG_T9, |
| TCG_REG_A0, |
| TCG_REG_A1, |
| TCG_REG_A2, |
| TCG_REG_A3, |
| TCG_REG_V0, |
| TCG_REG_V1 |
| }; |
| |
| static const int tcg_target_call_iarg_regs[4] = { |
| TCG_REG_A0, |
| TCG_REG_A1, |
| TCG_REG_A2, |
| TCG_REG_A3 |
| }; |
| |
| static const int tcg_target_call_oarg_regs[2] = { |
| TCG_REG_V0, |
| TCG_REG_V1 |
| }; |
| |
| static uint8_t *tb_ret_addr; |
| |
| static inline uint32_t reloc_lo16_val (void *pc, tcg_target_long target) |
| { |
| return target & 0xffff; |
| } |
| |
| static inline void reloc_lo16 (void *pc, tcg_target_long target) |
| { |
| *(uint32_t *) pc = (*(uint32_t *) pc & ~0xffff) |
| | reloc_lo16_val(pc, target); |
| } |
| |
| static inline uint32_t reloc_hi16_val (void *pc, tcg_target_long target) |
| { |
| return (target >> 16) & 0xffff; |
| } |
| |
| static inline void reloc_hi16 (void *pc, tcg_target_long target) |
| { |
| *(uint32_t *) pc = (*(uint32_t *) pc & ~0xffff) |
| | reloc_hi16_val(pc, target); |
| } |
| |
| static inline uint32_t reloc_pc16_val (void *pc, tcg_target_long target) |
| { |
| int32_t disp; |
| |
| disp = target - (tcg_target_long) pc - 4; |
| if (disp != (disp << 14) >> 14) { |
| tcg_abort (); |
| } |
| |
| return (disp >> 2) & 0xffff; |
| } |
| |
| static inline void reloc_pc16 (void *pc, tcg_target_long target) |
| { |
| *(uint32_t *) pc = (*(uint32_t *) pc & ~0xffff) |
| | reloc_pc16_val(pc, target); |
| } |
| |
| static inline uint32_t reloc_26_val (void *pc, tcg_target_long target) |
| { |
| if ((((tcg_target_long)pc + 4) & 0xf0000000) != (target & 0xf0000000)) { |
| tcg_abort (); |
| } |
| |
| return (target >> 2) & 0x3ffffff; |
| } |
| |
| static inline void reloc_pc26 (void *pc, tcg_target_long target) |
| { |
| *(uint32_t *) pc = (*(uint32_t *) pc & ~0x3ffffff) |
| | reloc_26_val(pc, target); |
| } |
| |
| static void patch_reloc(uint8_t *code_ptr, int type, |
| tcg_target_long value, tcg_target_long addend) |
| { |
| value += addend; |
| switch(type) { |
| case R_MIPS_LO16: |
| reloc_lo16(code_ptr, value); |
| break; |
| case R_MIPS_HI16: |
| reloc_hi16(code_ptr, value); |
| break; |
| case R_MIPS_PC16: |
| reloc_pc16(code_ptr, value); |
| break; |
| case R_MIPS_26: |
| reloc_pc26(code_ptr, value); |
| break; |
| default: |
| tcg_abort(); |
| } |
| } |
| |
| /* maximum number of register used for input function arguments */ |
| static inline int tcg_target_get_call_iarg_regs_count(int flags) |
| { |
| return 4; |
| } |
| |
| /* parse target specific constraints */ |
| static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str) |
| { |
| const char *ct_str; |
| |
| ct_str = *pct_str; |
| switch(ct_str[0]) { |
| case 'r': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set(ct->u.regs, 0xffffffff); |
| break; |
| case 'C': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_clear(ct->u.regs); |
| tcg_regset_set_reg(ct->u.regs, TCG_REG_T9); |
| break; |
| case 'L': /* qemu_ld output arg constraint */ |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set(ct->u.regs, 0xffffffff); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_V0); |
| break; |
| case 'l': /* qemu_ld input arg constraint */ |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set(ct->u.regs, 0xffffffff); |
| #if defined(CONFIG_SOFTMMU) |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_A0); |
| #endif |
| break; |
| case 'S': /* qemu_st constraint */ |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set(ct->u.regs, 0xffffffff); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_A0); |
| #if defined(CONFIG_SOFTMMU) |
| # if TARGET_LONG_BITS == 64 |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_A1); |
| # endif |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_A2); |
| #endif |
| break; |
| case 'I': |
| ct->ct |= TCG_CT_CONST_U16; |
| break; |
| case 'J': |
| ct->ct |= TCG_CT_CONST_S16; |
| break; |
| case 'Z': |
| /* We are cheating a bit here, using the fact that the register |
| ZERO is also the register number 0. Hence there is no need |
| to check for const_args in each instruction. */ |
| ct->ct |= TCG_CT_CONST_ZERO; |
| break; |
| default: |
| return -1; |
| } |
| ct_str++; |
| *pct_str = ct_str; |
| return 0; |
| } |
| |
| /* test if a constant matches the constraint */ |
| static inline int tcg_target_const_match(tcg_target_long val, |
| const TCGArgConstraint *arg_ct) |
| { |
| int ct; |
| ct = arg_ct->ct; |
| if (ct & TCG_CT_CONST) |
| return 1; |
| else if ((ct & TCG_CT_CONST_ZERO) && val == 0) |
| return 1; |
| else if ((ct & TCG_CT_CONST_U16) && val == (uint16_t)val) |
| return 1; |
| else if ((ct & TCG_CT_CONST_S16) && val == (int16_t)val) |
| return 1; |
| else |
| return 0; |
| } |
| |
| /* instruction opcodes */ |
| enum { |
| OPC_BEQ = 0x04 << 26, |
| OPC_BNE = 0x05 << 26, |
| OPC_ADDIU = 0x09 << 26, |
| OPC_SLTI = 0x0A << 26, |
| OPC_SLTIU = 0x0B << 26, |
| OPC_ANDI = 0x0C << 26, |
| OPC_ORI = 0x0D << 26, |
| OPC_XORI = 0x0E << 26, |
| OPC_LUI = 0x0F << 26, |
| OPC_LB = 0x20 << 26, |
| OPC_LH = 0x21 << 26, |
| OPC_LW = 0x23 << 26, |
| OPC_LBU = 0x24 << 26, |
| OPC_LHU = 0x25 << 26, |
| OPC_LWU = 0x27 << 26, |
| OPC_SB = 0x28 << 26, |
| OPC_SH = 0x29 << 26, |
| OPC_SW = 0x2B << 26, |
| |
| OPC_SPECIAL = 0x00 << 26, |
| OPC_SLL = OPC_SPECIAL | 0x00, |
| OPC_SRL = OPC_SPECIAL | 0x02, |
| OPC_SRA = OPC_SPECIAL | 0x03, |
| OPC_SLLV = OPC_SPECIAL | 0x04, |
| OPC_SRLV = OPC_SPECIAL | 0x06, |
| OPC_SRAV = OPC_SPECIAL | 0x07, |
| OPC_JR = OPC_SPECIAL | 0x08, |
| OPC_JALR = OPC_SPECIAL | 0x09, |
| OPC_MFHI = OPC_SPECIAL | 0x10, |
| OPC_MFLO = OPC_SPECIAL | 0x12, |
| OPC_MULT = OPC_SPECIAL | 0x18, |
| OPC_MULTU = OPC_SPECIAL | 0x19, |
| OPC_DIV = OPC_SPECIAL | 0x1A, |
| OPC_DIVU = OPC_SPECIAL | 0x1B, |
| OPC_ADDU = OPC_SPECIAL | 0x21, |
| OPC_SUBU = OPC_SPECIAL | 0x23, |
| OPC_AND = OPC_SPECIAL | 0x24, |
| OPC_OR = OPC_SPECIAL | 0x25, |
| OPC_XOR = OPC_SPECIAL | 0x26, |
| OPC_NOR = OPC_SPECIAL | 0x27, |
| OPC_SLT = OPC_SPECIAL | 0x2A, |
| OPC_SLTU = OPC_SPECIAL | 0x2B, |
| |
| OPC_SPECIAL3 = 0x1f << 26, |
| OPC_SEB = OPC_SPECIAL3 | 0x420, |
| OPC_SEH = OPC_SPECIAL3 | 0x620, |
| }; |
| |
| /* |
| * Type reg |
| */ |
| static inline void tcg_out_opc_reg(TCGContext *s, int opc, int rd, int rs, int rt) |
| { |
| int32_t inst; |
| |
| inst = opc; |
| inst |= (rs & 0x1F) << 21; |
| inst |= (rt & 0x1F) << 16; |
| inst |= (rd & 0x1F) << 11; |
| tcg_out32(s, inst); |
| } |
| |
| /* |
| * Type immediate |
| */ |
| static inline void tcg_out_opc_imm(TCGContext *s, int opc, int rt, int rs, int imm) |
| { |
| int32_t inst; |
| |
| inst = opc; |
| inst |= (rs & 0x1F) << 21; |
| inst |= (rt & 0x1F) << 16; |
| inst |= (imm & 0xffff); |
| tcg_out32(s, inst); |
| } |
| |
| /* |
| * Type branch |
| */ |
| static inline void tcg_out_opc_br(TCGContext *s, int opc, int rt, int rs) |
| { |
| /* We pay attention here to not modify the branch target by reading |
| the existing value and using it again. This ensure that caches and |
| memory are kept coherent during retranslation. */ |
| uint16_t offset = (uint16_t)(*(uint32_t *) s->code_ptr); |
| |
| tcg_out_opc_imm(s, opc, rt, rs, offset); |
| } |
| |
| /* |
| * Type sa |
| */ |
| static inline void tcg_out_opc_sa(TCGContext *s, int opc, int rd, int rt, int sa) |
| { |
| int32_t inst; |
| |
| inst = opc; |
| inst |= (rt & 0x1F) << 16; |
| inst |= (rd & 0x1F) << 11; |
| inst |= (sa & 0x1F) << 6; |
| tcg_out32(s, inst); |
| |
| } |
| |
| static inline void tcg_out_nop(TCGContext *s) |
| { |
| tcg_out32(s, 0); |
| } |
| |
| static inline void tcg_out_mov(TCGContext *s, TCGType type, int ret, int arg) |
| { |
| tcg_out_opc_reg(s, OPC_ADDU, ret, arg, TCG_REG_ZERO); |
| } |
| |
| static inline void tcg_out_movi(TCGContext *s, TCGType type, |
| int reg, int32_t arg) |
| { |
| if (arg == (int16_t)arg) { |
| tcg_out_opc_imm(s, OPC_ADDIU, reg, TCG_REG_ZERO, arg); |
| } else if (arg == (uint16_t)arg) { |
| tcg_out_opc_imm(s, OPC_ORI, reg, TCG_REG_ZERO, arg); |
| } else { |
| tcg_out_opc_imm(s, OPC_LUI, reg, 0, arg >> 16); |
| tcg_out_opc_imm(s, OPC_ORI, reg, reg, arg & 0xffff); |
| } |
| } |
| |
| static inline void tcg_out_bswap16(TCGContext *s, int ret, int arg) |
| { |
| /* ret and arg can't be register at */ |
| if (ret == TCG_REG_AT || arg == TCG_REG_AT) { |
| tcg_abort(); |
| } |
| |
| tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8); |
| tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, TCG_REG_AT, 0x00ff); |
| |
| tcg_out_opc_sa(s, OPC_SLL, ret, arg, 8); |
| tcg_out_opc_imm(s, OPC_ANDI, ret, ret, 0xff00); |
| tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT); |
| } |
| |
| static inline void tcg_out_bswap16s(TCGContext *s, int ret, int arg) |
| { |
| /* ret and arg can't be register at */ |
| if (ret == TCG_REG_AT || arg == TCG_REG_AT) { |
| tcg_abort(); |
| } |
| |
| tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8); |
| tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, TCG_REG_AT, 0xff); |
| |
| tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24); |
| tcg_out_opc_sa(s, OPC_SRA, ret, ret, 16); |
| tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT); |
| } |
| |
| static inline void tcg_out_bswap32(TCGContext *s, int ret, int arg) |
| { |
| /* ret and arg must be different and can't be register at */ |
| if (ret == arg || ret == TCG_REG_AT || arg == TCG_REG_AT) { |
| tcg_abort(); |
| } |
| |
| tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24); |
| |
| tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 24); |
| tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT); |
| |
| tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, arg, 0xff00); |
| tcg_out_opc_sa(s, OPC_SLL, TCG_REG_AT, TCG_REG_AT, 8); |
| tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT); |
| |
| tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8); |
| tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, TCG_REG_AT, 0xff00); |
| tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT); |
| } |
| |
| static inline void tcg_out_ext8s(TCGContext *s, int ret, int arg) |
| { |
| #ifdef _MIPS_ARCH_MIPS32R2 |
| tcg_out_opc_reg(s, OPC_SEB, ret, 0, arg); |
| #else |
| tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24); |
| tcg_out_opc_sa(s, OPC_SRA, ret, ret, 24); |
| #endif |
| } |
| |
| static inline void tcg_out_ext16s(TCGContext *s, int ret, int arg) |
| { |
| #ifdef _MIPS_ARCH_MIPS32R2 |
| tcg_out_opc_reg(s, OPC_SEH, ret, 0, arg); |
| #else |
| tcg_out_opc_sa(s, OPC_SLL, ret, arg, 16); |
| tcg_out_opc_sa(s, OPC_SRA, ret, ret, 16); |
| #endif |
| } |
| |
| static inline void tcg_out_ldst(TCGContext *s, int opc, int arg, |
| int arg1, tcg_target_long arg2) |
| { |
| 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, TCG_TYPE_I32, sp_args++, addr_reg1); |
| # if TARGET_LONG_BITS == 64 |
| tcg_out_mov(s, TCG_TYPE_I32, 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, TCG_TYPE_I32, data_reg1, TCG_REG_V0); |
| break; |
| case 3: |
| tcg_out_mov(s, TCG_TYPE_I32, data_reg2, TCG_REG_V1); |
| tcg_out_mov(s, TCG_TYPE_I32, 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, TCG_TYPE_I32, sp_args++, addr_reg1); |
| # if TARGET_LONG_BITS == 64 |
| tcg_out_mov(s, TCG_TYPE_I32, 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, TCG_TYPE_I32, sp_args++, data_reg1); |
| break; |
| case 3: |
| sp_args = (sp_args + 1) & ~1; |
| tcg_out_mov(s, TCG_TYPE_I32, sp_args++, data_reg1); |
| tcg_out_mov(s, TCG_TYPE_I32, 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, TCG_TYPE_I32, 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, TCG_TYPE_I32, 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, TCG_TYPE_I32, 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, /* used for the global env (TCG_AREG0) */ |
| 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, |
| TCG_REG_RA, /* should be last for ABI compliance */ |
| }; |
| |
| /* Generate global QEMU prologue and epilogue code */ |
| static 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_target_call_iarg_regs[1], 0); |
| tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); |
| 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); |
| } |
| |
| static 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); |
| tcg_set_frame(s, TCG_AREG0, offsetof(CPUState, temp_buf), |
| CPU_TEMP_BUF_NLONGS * sizeof(long)); |
| } |
