| /* |
| * Tiny Code Generator for QEMU |
| * |
| * 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. |
| */ |
| |
| static uint8_t *tb_ret_addr; |
| |
| #ifdef _CALL_DARWIN |
| #define LINKAGE_AREA_SIZE 24 |
| #define LR_OFFSET 8 |
| #elif defined _CALL_AIX |
| #define LINKAGE_AREA_SIZE 52 |
| #define LR_OFFSET 8 |
| #else |
| #define LINKAGE_AREA_SIZE 8 |
| #define LR_OFFSET 4 |
| #endif |
| |
| #define FAST_PATH |
| |
| #ifndef GUEST_BASE |
| #define GUEST_BASE 0 |
| #endif |
| |
| #ifdef CONFIG_USE_GUEST_BASE |
| #define TCG_GUEST_BASE_REG 30 |
| #else |
| #define TCG_GUEST_BASE_REG 0 |
| #endif |
| |
| #ifndef NDEBUG |
| static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { |
| "r0", |
| "r1", |
| "r2", |
| "r3", |
| "r4", |
| "r5", |
| "r6", |
| "r7", |
| "r8", |
| "r9", |
| "r10", |
| "r11", |
| "r12", |
| "r13", |
| "r14", |
| "r15", |
| "r16", |
| "r17", |
| "r18", |
| "r19", |
| "r20", |
| "r21", |
| "r22", |
| "r23", |
| "r24", |
| "r25", |
| "r26", |
| "r27", |
| "r28", |
| "r29", |
| "r30", |
| "r31" |
| }; |
| #endif |
| |
| static const int tcg_target_reg_alloc_order[] = { |
| TCG_REG_R14, |
| TCG_REG_R15, |
| TCG_REG_R16, |
| TCG_REG_R17, |
| TCG_REG_R18, |
| TCG_REG_R19, |
| TCG_REG_R20, |
| TCG_REG_R21, |
| TCG_REG_R22, |
| TCG_REG_R23, |
| TCG_REG_R28, |
| TCG_REG_R29, |
| TCG_REG_R30, |
| TCG_REG_R31, |
| #ifdef _CALL_DARWIN |
| TCG_REG_R2, |
| #endif |
| TCG_REG_R3, |
| TCG_REG_R4, |
| TCG_REG_R5, |
| TCG_REG_R6, |
| TCG_REG_R7, |
| TCG_REG_R8, |
| TCG_REG_R9, |
| TCG_REG_R10, |
| #ifndef _CALL_DARWIN |
| TCG_REG_R11, |
| #endif |
| TCG_REG_R12, |
| #ifndef _CALL_SYSV |
| TCG_REG_R13, |
| #endif |
| TCG_REG_R24, |
| TCG_REG_R25, |
| TCG_REG_R26, |
| TCG_REG_R27 |
| }; |
| |
| static const int tcg_target_call_iarg_regs[] = { |
| TCG_REG_R3, |
| TCG_REG_R4, |
| TCG_REG_R5, |
| TCG_REG_R6, |
| TCG_REG_R7, |
| TCG_REG_R8, |
| TCG_REG_R9, |
| TCG_REG_R10 |
| }; |
| |
| static const int tcg_target_call_oarg_regs[2] = { |
| TCG_REG_R3, |
| TCG_REG_R4 |
| }; |
| |
| static const int tcg_target_callee_save_regs[] = { |
| #ifdef _CALL_DARWIN |
| TCG_REG_R11, |
| TCG_REG_R13, |
| #endif |
| #ifdef _CALL_AIX |
| TCG_REG_R13, |
| #endif |
| TCG_REG_R14, |
| TCG_REG_R15, |
| TCG_REG_R16, |
| TCG_REG_R17, |
| TCG_REG_R18, |
| TCG_REG_R19, |
| TCG_REG_R20, |
| TCG_REG_R21, |
| TCG_REG_R22, |
| TCG_REG_R23, |
| TCG_REG_R24, |
| TCG_REG_R25, |
| TCG_REG_R26, |
| /* TCG_REG_R27, */ /* currently used for the global env, so no |
| need to save */ |
| TCG_REG_R28, |
| TCG_REG_R29, |
| TCG_REG_R30, |
| TCG_REG_R31 |
| }; |
| |
| static uint32_t reloc_pc24_val (void *pc, tcg_target_long target) |
| { |
| tcg_target_long disp; |
| |
| disp = target - (tcg_target_long) pc; |
| if ((disp << 6) >> 6 != disp) |
| tcg_abort (); |
| |
| return disp & 0x3fffffc; |
| } |
| |
| static void reloc_pc24 (void *pc, tcg_target_long target) |
| { |
| *(uint32_t *) pc = (*(uint32_t *) pc & ~0x3fffffc) |
| | reloc_pc24_val (pc, target); |
| } |
| |
| static uint16_t reloc_pc14_val (void *pc, tcg_target_long target) |
| { |
| tcg_target_long disp; |
| |
| disp = target - (tcg_target_long) pc; |
| if (disp != (int16_t) disp) |
| tcg_abort (); |
| |
| return disp & 0xfffc; |
| } |
| |
| static void reloc_pc14 (void *pc, tcg_target_long target) |
| { |
| *(uint32_t *) pc = (*(uint32_t *) pc & ~0xfffc) |
| | reloc_pc14_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_PPC_REL14: |
| reloc_pc14 (code_ptr, value); |
| break; |
| case R_PPC_REL24: |
| reloc_pc24 (code_ptr, value); |
| break; |
| default: |
| tcg_abort(); |
| } |
| } |
| |
| /* maximum number of register used for input function arguments */ |
| static int tcg_target_get_call_iarg_regs_count(int flags) |
| { |
| return ARRAY_SIZE (tcg_target_call_iarg_regs); |
| } |
| |
| /* 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 'A': case 'B': case 'C': case 'D': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set_reg(ct->u.regs, 3 + ct_str[0] - 'A'); |
| break; |
| case 'r': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, 0xffffffff); |
| break; |
| #ifdef CONFIG_SOFTMMU |
| case 'L': /* qemu_ld constraint */ |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, 0xffffffff); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R3); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R4); |
| break; |
| case 'K': /* qemu_st[8..32] constraint */ |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, 0xffffffff); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R3); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R4); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R5); |
| #if TARGET_LONG_BITS == 64 |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R6); |
| #endif |
| break; |
| case 'M': /* qemu_st64 constraint */ |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, 0xffffffff); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R3); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R4); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R5); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R6); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R7); |
| break; |
| #else |
| case 'L': |
| case 'K': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, 0xffffffff); |
| break; |
| case 'M': |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32(ct->u.regs, 0, 0xffffffff); |
| tcg_regset_reset_reg(ct->u.regs, TCG_REG_R3); |
| break; |
| #endif |
| default: |
| return -1; |
| } |
| ct_str++; |
| *pct_str = ct_str; |
| return 0; |
| } |
| |
| /* test if a constant matches the constraint */ |
| static 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; |
| return 0; |
| } |
| |
| #define OPCD(opc) ((opc)<<26) |
| #define XO31(opc) (OPCD(31)|((opc)<<1)) |
| #define XO19(opc) (OPCD(19)|((opc)<<1)) |
| |
| #define B OPCD(18) |
| #define BC OPCD(16) |
| #define LBZ OPCD(34) |
| #define LHZ OPCD(40) |
| #define LHA OPCD(42) |
| #define LWZ OPCD(32) |
| #define STB OPCD(38) |
| #define STH OPCD(44) |
| #define STW OPCD(36) |
| |
| #define ADDIC OPCD(12) |
| #define ADDI OPCD(14) |
| #define ADDIS OPCD(15) |
| #define ORI OPCD(24) |
| #define ORIS OPCD(25) |
| #define XORI OPCD(26) |
| #define XORIS OPCD(27) |
| #define ANDI OPCD(28) |
| #define ANDIS OPCD(29) |
| #define MULLI OPCD( 7) |
| #define CMPLI OPCD(10) |
| #define CMPI OPCD(11) |
| #define SUBFIC OPCD( 8) |
| |
| #define LWZU OPCD(33) |
| #define STWU OPCD(37) |
| |
| #define RLWIMI OPCD(20) |
| #define RLWINM OPCD(21) |
| #define RLWNM OPCD(23) |
| |
| #define BCLR XO19( 16) |
| #define BCCTR XO19(528) |
| #define CRAND XO19(257) |
| #define CRANDC XO19(129) |
| #define CRNAND XO19(225) |
| #define CROR XO19(449) |
| #define CRNOR XO19( 33) |
| |
| #define EXTSB XO31(954) |
| #define EXTSH XO31(922) |
| #define ADD XO31(266) |
| #define ADDE XO31(138) |
| #define ADDC XO31( 10) |
| #define AND XO31( 28) |
| #define SUBF XO31( 40) |
| #define SUBFC XO31( 8) |
| #define SUBFE XO31(136) |
| #define OR XO31(444) |
| #define XOR XO31(316) |
| #define MULLW XO31(235) |
| #define MULHWU XO31( 11) |
| #define DIVW XO31(491) |
| #define DIVWU XO31(459) |
| #define CMP XO31( 0) |
| #define CMPL XO31( 32) |
| #define LHBRX XO31(790) |
| #define LWBRX XO31(534) |
| #define STHBRX XO31(918) |
| #define STWBRX XO31(662) |
| #define MFSPR XO31(339) |
| #define MTSPR XO31(467) |
| #define SRAWI XO31(824) |
| #define NEG XO31(104) |
| #define MFCR XO31( 19) |
| #define CNTLZW XO31( 26) |
| #define NOR XO31(124) |
| #define ANDC XO31( 60) |
| #define ORC XO31(412) |
| #define EQV XO31(284) |
| #define NAND XO31(476) |
| |
| #define LBZX XO31( 87) |
| #define LHZX XO31(279) |
| #define LHAX XO31(343) |
| #define LWZX XO31( 23) |
| #define STBX XO31(215) |
| #define STHX XO31(407) |
| #define STWX XO31(151) |
| |
| #define SPR(a,b) ((((a)<<5)|(b))<<11) |
| #define LR SPR(8, 0) |
| #define CTR SPR(9, 0) |
| |
| #define SLW XO31( 24) |
| #define SRW XO31(536) |
| #define SRAW XO31(792) |
| |
| #define TW XO31(4) |
| #define TRAP (TW | TO (31)) |
| |
| #define RT(r) ((r)<<21) |
| #define RS(r) ((r)<<21) |
| #define RA(r) ((r)<<16) |
| #define RB(r) ((r)<<11) |
| #define TO(t) ((t)<<21) |
| #define SH(s) ((s)<<11) |
| #define MB(b) ((b)<<6) |
| #define ME(e) ((e)<<1) |
| #define BO(o) ((o)<<21) |
| |
| #define LK 1 |
| |
| #define TAB(t,a,b) (RT(t) | RA(a) | RB(b)) |
| #define SAB(s,a,b) (RS(s) | RA(a) | RB(b)) |
| |
| #define BF(n) ((n)<<23) |
| #define BI(n, c) (((c)+((n)*4))<<16) |
| #define BT(n, c) (((c)+((n)*4))<<21) |
| #define BA(n, c) (((c)+((n)*4))<<16) |
| #define BB(n, c) (((c)+((n)*4))<<11) |
| |
| #define BO_COND_TRUE BO (12) |
| #define BO_COND_FALSE BO (4) |
| #define BO_ALWAYS BO (20) |
| |
| enum { |
| CR_LT, |
| CR_GT, |
| CR_EQ, |
| CR_SO |
| }; |
| |
| static const uint32_t tcg_to_bc[10] = { |
| [TCG_COND_EQ] = BC | BI (7, CR_EQ) | BO_COND_TRUE, |
| [TCG_COND_NE] = BC | BI (7, CR_EQ) | BO_COND_FALSE, |
| [TCG_COND_LT] = BC | BI (7, CR_LT) | BO_COND_TRUE, |
| [TCG_COND_GE] = BC | BI (7, CR_LT) | BO_COND_FALSE, |
| [TCG_COND_LE] = BC | BI (7, CR_GT) | BO_COND_FALSE, |
| [TCG_COND_GT] = BC | BI (7, CR_GT) | BO_COND_TRUE, |
| [TCG_COND_LTU] = BC | BI (7, CR_LT) | BO_COND_TRUE, |
| [TCG_COND_GEU] = BC | BI (7, CR_LT) | BO_COND_FALSE, |
| [TCG_COND_LEU] = BC | BI (7, CR_GT) | BO_COND_FALSE, |
| [TCG_COND_GTU] = BC | BI (7, CR_GT) | BO_COND_TRUE, |
| }; |
| |
| static void tcg_out_mov(TCGContext *s, TCGType type, int ret, int arg) |
| { |
| tcg_out32 (s, OR | SAB (arg, ret, arg)); |
| } |
| |
| static void tcg_out_movi(TCGContext *s, TCGType type, |
| int ret, tcg_target_long arg) |
| { |
| if (arg == (int16_t) arg) |
| tcg_out32 (s, ADDI | RT (ret) | RA (0) | (arg & 0xffff)); |
| else { |
| tcg_out32 (s, ADDIS | RT (ret) | RA (0) | ((arg >> 16) & 0xffff)); |
| if (arg & 0xffff) |
| tcg_out32 (s, ORI | RS (ret) | RA (ret) | (arg & 0xffff)); |
| } |
| } |
| |
| static void tcg_out_ldst (TCGContext *s, int ret, int addr, |
| int offset, int op1, int op2) |
| { |
| if (offset == (int16_t) offset) |
| tcg_out32 (s, op1 | RT (ret) | RA (addr) | (offset & 0xffff)); |
| else { |
| tcg_out_movi (s, TCG_TYPE_I32, 0, offset); |
| tcg_out32 (s, op2 | RT (ret) | RA (addr) | RB (0)); |
| } |
| } |
| |
| static void tcg_out_b (TCGContext *s, int mask, tcg_target_long target) |
| { |
| tcg_target_long disp; |
| |
| disp = target - (tcg_target_long) s->code_ptr; |
| if ((disp << 6) >> 6 == disp) |
| tcg_out32 (s, B | (disp & 0x3fffffc) | mask); |
| else { |
| tcg_out_movi (s, TCG_TYPE_I32, 0, (tcg_target_long) target); |
| tcg_out32 (s, MTSPR | RS (0) | CTR); |
| tcg_out32 (s, BCCTR | BO_ALWAYS | mask); |
| } |
| } |
| |
| static void tcg_out_call (TCGContext *s, tcg_target_long arg, int const_arg) |
| { |
| #ifdef _CALL_AIX |
| int reg; |
| |
| if (const_arg) { |
| reg = 2; |
| tcg_out_movi (s, TCG_TYPE_I32, reg, arg); |
| } |
| else reg = arg; |
| |
| tcg_out32 (s, LWZ | RT (0) | RA (reg)); |
| tcg_out32 (s, MTSPR | RA (0) | CTR); |
| tcg_out32 (s, LWZ | RT (2) | RA (reg) | 4); |
| tcg_out32 (s, BCCTR | BO_ALWAYS | LK); |
| #else |
| if (const_arg) { |
| tcg_out_b (s, LK, arg); |
| } |
| else { |
| tcg_out32 (s, MTSPR | RS (arg) | LR); |
| tcg_out32 (s, BCLR | BO_ALWAYS | LK); |
| } |
| #endif |
| } |
| |
| #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_reg, data_reg, data_reg2, r0, r1, rbase, mem_index, s_bits, bswap; |
| #ifdef CONFIG_SOFTMMU |
| int r2; |
| void *label1_ptr, *label2_ptr; |
| #endif |
| #if TARGET_LONG_BITS == 64 |
| int addr_reg2; |
| #endif |
| |
| data_reg = *args++; |
| if (opc == 3) |
| data_reg2 = *args++; |
| else |
| data_reg2 = 0; |
| addr_reg = *args++; |
| #if TARGET_LONG_BITS == 64 |
| addr_reg2 = *args++; |
| #endif |
| mem_index = *args; |
| s_bits = opc & 3; |
| |
| #ifdef CONFIG_SOFTMMU |
| r0 = 3; |
| r1 = 4; |
| r2 = 0; |
| rbase = 0; |
| |
| tcg_out32 (s, (RLWINM |
| | RA (r0) |
| | RS (addr_reg) |
| | SH (32 - (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS)) |
| | MB (32 - (CPU_TLB_BITS + CPU_TLB_ENTRY_BITS)) |
| | ME (31 - CPU_TLB_ENTRY_BITS) |
| ) |
| ); |
| tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (TCG_AREG0)); |
| tcg_out32 (s, (LWZU |
| | RT (r1) |
| | RA (r0) |
| | offsetof (CPUState, tlb_table[mem_index][0].addr_read) |
| ) |
| ); |
| tcg_out32 (s, (RLWINM |
| | RA (r2) |
| | RS (addr_reg) |
| | SH (0) |
| | MB ((32 - s_bits) & 31) |
| | ME (31 - TARGET_PAGE_BITS) |
| ) |
| ); |
| |
| tcg_out32 (s, CMP | BF (7) | RA (r2) | RB (r1)); |
| #if TARGET_LONG_BITS == 64 |
| tcg_out32 (s, LWZ | RT (r1) | RA (r0) | 4); |
| tcg_out32 (s, CMP | BF (6) | RA (addr_reg2) | RB (r1)); |
| tcg_out32 (s, CRAND | BT (7, CR_EQ) | BA (6, CR_EQ) | BB (7, CR_EQ)); |
| #endif |
| |
| label1_ptr = s->code_ptr; |
| #ifdef FAST_PATH |
| tcg_out32 (s, BC | BI (7, CR_EQ) | BO_COND_TRUE); |
| #endif |
| |
| /* slow path */ |
| #if TARGET_LONG_BITS == 32 |
| tcg_out_mov (s, TCG_TYPE_I32, 3, addr_reg); |
| tcg_out_movi (s, TCG_TYPE_I32, 4, mem_index); |
| #else |
| tcg_out_mov (s, TCG_TYPE_I32, 3, addr_reg2); |
| tcg_out_mov (s, TCG_TYPE_I32, 4, addr_reg); |
| tcg_out_movi (s, TCG_TYPE_I32, 5, mem_index); |
| #endif |
| |
| tcg_out_call (s, (tcg_target_long) qemu_ld_helpers[s_bits], 1); |
| switch (opc) { |
| case 0|4: |
| tcg_out32 (s, EXTSB | RA (data_reg) | RS (3)); |
| break; |
| case 1|4: |
| tcg_out32 (s, EXTSH | RA (data_reg) | RS (3)); |
| break; |
| case 0: |
| case 1: |
| case 2: |
| if (data_reg != 3) |
| tcg_out_mov (s, TCG_TYPE_I32, data_reg, 3); |
| break; |
| case 3: |
| if (data_reg == 3) { |
| if (data_reg2 == 4) { |
| tcg_out_mov (s, TCG_TYPE_I32, 0, 4); |
| tcg_out_mov (s, TCG_TYPE_I32, 4, 3); |
| tcg_out_mov (s, TCG_TYPE_I32, 3, 0); |
| } |
| else { |
| tcg_out_mov (s, TCG_TYPE_I32, data_reg2, 3); |
| tcg_out_mov (s, TCG_TYPE_I32, 3, 4); |
| } |
| } |
| else { |
| if (data_reg != 4) tcg_out_mov (s, TCG_TYPE_I32, data_reg, 4); |
| if (data_reg2 != 3) tcg_out_mov (s, TCG_TYPE_I32, data_reg2, 3); |
| } |
| break; |
| } |
| label2_ptr = s->code_ptr; |
| tcg_out32 (s, B); |
| |
| /* label1: fast path */ |
| #ifdef FAST_PATH |
| reloc_pc14 (label1_ptr, (tcg_target_long) s->code_ptr); |
| #endif |
| |
| /* r0 now contains &env->tlb_table[mem_index][index].addr_read */ |
| tcg_out32 (s, (LWZ |
| | RT (r0) |
| | RA (r0) |
| | (offsetof (CPUTLBEntry, addend) |
| - offsetof (CPUTLBEntry, addr_read)) |
| )); |
| /* r0 = env->tlb_table[mem_index][index].addend */ |
| tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (addr_reg)); |
| /* r0 = env->tlb_table[mem_index][index].addend + addr */ |
| |
| #else /* !CONFIG_SOFTMMU */ |
| r0 = addr_reg; |
| r1 = 3; |
| rbase = GUEST_BASE ? TCG_GUEST_BASE_REG : 0; |
| #endif |
| |
| #ifdef TARGET_WORDS_BIGENDIAN |
| bswap = 0; |
| #else |
| bswap = 1; |
| #endif |
| |
| switch (opc) { |
| default: |
| case 0: |
| tcg_out32 (s, LBZX | TAB (data_reg, rbase, r0)); |
| break; |
| case 0|4: |
| tcg_out32 (s, LBZX | TAB (data_reg, rbase, r0)); |
| tcg_out32 (s, EXTSB | RA (data_reg) | RS (data_reg)); |
| break; |
| case 1: |
| if (bswap) |
| tcg_out32 (s, LHBRX | TAB (data_reg, rbase, r0)); |
| else |
| tcg_out32 (s, LHZX | TAB (data_reg, rbase, r0)); |
| break; |
| case 1|4: |
| if (bswap) { |
| tcg_out32 (s, LHBRX | TAB (data_reg, rbase, r0)); |
| tcg_out32 (s, EXTSH | RA (data_reg) | RS (data_reg)); |
| } |
| else tcg_out32 (s, LHAX | TAB (data_reg, rbase, r0)); |
| break; |
| case 2: |
| if (bswap) |
| tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0)); |
| else |
| tcg_out32 (s, LWZX | TAB (data_reg, rbase, r0)); |
| break; |
| case 3: |
| if (bswap) { |
| tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4); |
| tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0)); |
| tcg_out32 (s, LWBRX | TAB (data_reg2, rbase, r1)); |
| } |
| else { |
| #ifdef CONFIG_USE_GUEST_BASE |
| tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4); |
| tcg_out32 (s, LWZX | TAB (data_reg2, rbase, r0)); |
| tcg_out32 (s, LWZX | TAB (data_reg, rbase, r1)); |
| #else |
| if (r0 == data_reg2) { |
| tcg_out32 (s, LWZ | RT (0) | RA (r0)); |
| tcg_out32 (s, LWZ | RT (data_reg) | RA (r0) | 4); |
| tcg_out_mov (s, TCG_TYPE_I32, data_reg2, 0); |
| } |
| else { |
| tcg_out32 (s, LWZ | RT (data_reg2) | RA (r0)); |
| tcg_out32 (s, LWZ | RT (data_reg) | RA (r0) | 4); |
| } |
| #endif |
| } |
| break; |
| } |
| |
| #ifdef CONFIG_SOFTMMU |
| reloc_pc24 (label2_ptr, (tcg_target_long) s->code_ptr); |
| #endif |
| } |
| |
| static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc) |
| { |
| int addr_reg, r0, r1, data_reg, data_reg2, mem_index, bswap, rbase; |
| #ifdef CONFIG_SOFTMMU |
| int r2, ir; |
| void *label1_ptr, *label2_ptr; |
| #endif |
| #if TARGET_LONG_BITS == 64 |
| int addr_reg2; |
| #endif |
| |
| data_reg = *args++; |
| if (opc == 3) |
| data_reg2 = *args++; |
| else |
| data_reg2 = 0; |
| addr_reg = *args++; |
| #if TARGET_LONG_BITS == 64 |
| addr_reg2 = *args++; |
| #endif |
| mem_index = *args; |
| |
| #ifdef CONFIG_SOFTMMU |
| r0 = 3; |
| r1 = 4; |
| r2 = 0; |
| rbase = 0; |
| |
| tcg_out32 (s, (RLWINM |
| | RA (r0) |
| | RS (addr_reg) |
| | SH (32 - (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS)) |
| | MB (32 - (CPU_TLB_ENTRY_BITS + CPU_TLB_BITS)) |
| | ME (31 - CPU_TLB_ENTRY_BITS) |
| ) |
| ); |
| tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (TCG_AREG0)); |
| tcg_out32 (s, (LWZU |
| | RT (r1) |
| | RA (r0) |
| | offsetof (CPUState, tlb_table[mem_index][0].addr_write) |
| ) |
| ); |
| tcg_out32 (s, (RLWINM |
| | RA (r2) |
| | RS (addr_reg) |
| | SH (0) |
| | MB ((32 - opc) & 31) |
| | ME (31 - TARGET_PAGE_BITS) |
| ) |
| ); |
| |
| tcg_out32 (s, CMP | (7 << 23) | RA (r2) | RB (r1)); |
| #if TARGET_LONG_BITS == 64 |
| tcg_out32 (s, LWZ | RT (r1) | RA (r0) | 4); |
| tcg_out32 (s, CMP | BF (6) | RA (addr_reg2) | RB (r1)); |
| tcg_out32 (s, CRAND | BT (7, CR_EQ) | BA (6, CR_EQ) | BB (7, CR_EQ)); |
| #endif |
| |
| label1_ptr = s->code_ptr; |
| #ifdef FAST_PATH |
| tcg_out32 (s, BC | BI (7, CR_EQ) | BO_COND_TRUE); |
| #endif |
| |
| /* slow path */ |
| #if TARGET_LONG_BITS == 32 |
| tcg_out_mov (s, TCG_TYPE_I32, 3, addr_reg); |
| ir = 4; |
| #else |
| tcg_out_mov (s, TCG_TYPE_I32, 3, addr_reg2); |
| tcg_out_mov (s, TCG_TYPE_I32, 4, addr_reg); |
| #ifdef TCG_TARGET_CALL_ALIGN_ARGS |
| ir = 5; |
| #else |
| ir = 4; |
| #endif |
| #endif |
| |
| switch (opc) { |
| case 0: |
| tcg_out32 (s, (RLWINM |
| | RA (ir) |
| | RS (data_reg) |
| | SH (0) |
| | MB (24) |
| | ME (31))); |
| break; |
| case 1: |
| tcg_out32 (s, (RLWINM |
| | RA (ir) |
| | RS (data_reg) |
| | SH (0) |
| | MB (16) |
| | ME (31))); |
| break; |
| case 2: |
| tcg_out_mov (s, TCG_TYPE_I32, ir, data_reg); |
| break; |
| case 3: |
| #ifdef TCG_TARGET_CALL_ALIGN_ARGS |
| ir = 5; |
| #endif |
| tcg_out_mov (s, TCG_TYPE_I32, ir++, data_reg2); |
| tcg_out_mov (s, TCG_TYPE_I32, ir, data_reg); |
| break; |
| } |
| ir++; |
| |
| tcg_out_movi (s, TCG_TYPE_I32, ir, mem_index); |
| tcg_out_call (s, (tcg_target_long) qemu_st_helpers[opc], 1); |
| label2_ptr = s->code_ptr; |
| tcg_out32 (s, B); |
| |
| /* label1: fast path */ |
| #ifdef FAST_PATH |
| reloc_pc14 (label1_ptr, (tcg_target_long) s->code_ptr); |
| #endif |
| |
| tcg_out32 (s, (LWZ |
| | RT (r0) |
| | RA (r0) |
| | (offsetof (CPUTLBEntry, addend) |
| - offsetof (CPUTLBEntry, addr_write)) |
| )); |
| /* r0 = env->tlb_table[mem_index][index].addend */ |
| tcg_out32 (s, ADD | RT (r0) | RA (r0) | RB (addr_reg)); |
| /* r0 = env->tlb_table[mem_index][index].addend + addr */ |
| |
| #else /* !CONFIG_SOFTMMU */ |
| r0 = addr_reg; |
| r1 = 3; |
| rbase = GUEST_BASE ? TCG_GUEST_BASE_REG : 0; |
| #endif |
| |
| #ifdef TARGET_WORDS_BIGENDIAN |
| bswap = 0; |
| #else |
| bswap = 1; |
| #endif |
| switch (opc) { |
| case 0: |
| tcg_out32 (s, STBX | SAB (data_reg, rbase, r0)); |
| break; |
| case 1: |
| if (bswap) |
| tcg_out32 (s, STHBRX | SAB (data_reg, rbase, r0)); |
| else |
| tcg_out32 (s, STHX | SAB (data_reg, rbase, r0)); |
| break; |
| case 2: |
| if (bswap) |
| tcg_out32 (s, STWBRX | SAB (data_reg, rbase, r0)); |
| else |
| tcg_out32 (s, STWX | SAB (data_reg, rbase, r0)); |
| break; |
| case 3: |
| if (bswap) { |
| tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4); |
| tcg_out32 (s, STWBRX | SAB (data_reg, rbase, r0)); |
| tcg_out32 (s, STWBRX | SAB (data_reg2, rbase, r1)); |
| } |
| else { |
| #ifdef CONFIG_USE_GUEST_BASE |
| tcg_out32 (s, STWX | SAB (data_reg2, rbase, r0)); |
| tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4); |
| tcg_out32 (s, STWX | SAB (data_reg, rbase, r1)); |
| #else |
| tcg_out32 (s, STW | RS (data_reg2) | RA (r0)); |
| tcg_out32 (s, STW | RS (data_reg) | RA (r0) | 4); |
| #endif |
| } |
| break; |
| } |
| |
| #ifdef CONFIG_SOFTMMU |
| reloc_pc24 (label2_ptr, (tcg_target_long) s->code_ptr); |
| #endif |
| } |
| |
| static void tcg_target_qemu_prologue (TCGContext *s) |
| { |
| int i, frame_size; |
| |
| frame_size = 0 |
| + LINKAGE_AREA_SIZE |
| + TCG_STATIC_CALL_ARGS_SIZE |
| + ARRAY_SIZE (tcg_target_callee_save_regs) * 4 |
| ; |
| frame_size = (frame_size + 15) & ~15; |
| |
| #ifdef _CALL_AIX |
| { |
| uint32_t addr; |
| |
| /* First emit adhoc function descriptor */ |
| addr = (uint32_t) s->code_ptr + 12; |
| tcg_out32 (s, addr); /* entry point */ |
| s->code_ptr += 8; /* skip TOC and environment pointer */ |
| } |
| #endif |
| tcg_out32 (s, MFSPR | RT (0) | LR); |
| tcg_out32 (s, STWU | RS (1) | RA (1) | (-frame_size & 0xffff)); |
| for (i = 0; i < ARRAY_SIZE (tcg_target_callee_save_regs); ++i) |
| tcg_out32 (s, (STW |
| | RS (tcg_target_callee_save_regs[i]) |
| | RA (1) |
| | (i * 4 + LINKAGE_AREA_SIZE + TCG_STATIC_CALL_ARGS_SIZE) |
| ) |
| ); |
| tcg_out32 (s, STW | RS (0) | RA (1) | (frame_size + LR_OFFSET)); |
| |
| #ifdef CONFIG_USE_GUEST_BASE |
| if (GUEST_BASE) { |
| tcg_out_movi (s, TCG_TYPE_I32, TCG_GUEST_BASE_REG, GUEST_BASE); |
| tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); |
| } |
| #endif |
| |
| tcg_out32 (s, MTSPR | RS (3) | CTR); |
| tcg_out32 (s, BCCTR | BO_ALWAYS); |
| tb_ret_addr = s->code_ptr; |
| |
| for (i = 0; i < ARRAY_SIZE (tcg_target_callee_save_regs); ++i) |
| tcg_out32 (s, (LWZ |
| | RT (tcg_target_callee_save_regs[i]) |
| | RA (1) |
| | (i * 4 + LINKAGE_AREA_SIZE + TCG_STATIC_CALL_ARGS_SIZE) |
| ) |
| ); |
| tcg_out32 (s, LWZ | RT (0) | RA (1) | (frame_size + LR_OFFSET)); |
| tcg_out32 (s, MTSPR | RS (0) | LR); |
| tcg_out32 (s, ADDI | RT (1) | RA (1) | frame_size); |
| tcg_out32 (s, BCLR | BO_ALWAYS); |
| } |
| |
| static void tcg_out_ld (TCGContext *s, TCGType type, int ret, int arg1, |
| tcg_target_long arg2) |
| { |
| tcg_out_ldst (s, ret, arg1, arg2, LWZ, LWZX); |
| } |
| |
| static void tcg_out_st (TCGContext *s, TCGType type, int arg, int arg1, |
| tcg_target_long arg2) |
| { |
| tcg_out_ldst (s, arg, arg1, arg2, STW, STWX); |
| } |
| |
| static void ppc_addi (TCGContext *s, int rt, int ra, tcg_target_long si) |
| { |
| if (!si && rt == ra) |
| return; |
| |
| if (si == (int16_t) si) |
| tcg_out32 (s, ADDI | RT (rt) | RA (ra) | (si & 0xffff)); |
| else { |
| uint16_t h = ((si >> 16) & 0xffff) + ((uint16_t) si >> 15); |
| tcg_out32 (s, ADDIS | RT (rt) | RA (ra) | h); |
| tcg_out32 (s, ADDI | RT (rt) | RA (rt) | (si & 0xffff)); |
| } |
| } |
| |
| static void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val) |
| { |
| ppc_addi (s, reg, reg, val); |
| } |
| |
| static void tcg_out_cmp (TCGContext *s, int cond, TCGArg arg1, TCGArg arg2, |
| int const_arg2, int cr) |
| { |
| int imm; |
| uint32_t op; |
| |
| switch (cond) { |
| case TCG_COND_EQ: |
| case TCG_COND_NE: |
| if (const_arg2) { |
| if ((int16_t) arg2 == arg2) { |
| op = CMPI; |
| imm = 1; |
| break; |
| } |
| else if ((uint16_t) arg2 == arg2) { |
| op = CMPLI; |
| imm = 1; |
| break; |
| } |
| } |
| op = CMPL; |
| imm = 0; |
| break; |
| |
| case TCG_COND_LT: |
| case TCG_COND_GE: |
| case TCG_COND_LE: |
| case TCG_COND_GT: |
| if (const_arg2) { |
| if ((int16_t) arg2 == arg2) { |
| op = CMPI; |
| imm = 1; |
| break; |
| } |
| } |
| op = CMP; |
| imm = 0; |
| break; |
| |
| case TCG_COND_LTU: |
| case TCG_COND_GEU: |
| case TCG_COND_LEU: |
| case TCG_COND_GTU: |
| if (const_arg2) { |
| if ((uint16_t) arg2 == arg2) { |
| op = CMPLI; |
| imm = 1; |
| break; |
| } |
| } |
| op = CMPL; |
| imm = 0; |
| break; |
| |
| default: |
| tcg_abort (); |
| } |
| op |= BF (cr); |
| |
| if (imm) |
| tcg_out32 (s, op | RA (arg1) | (arg2 & 0xffff)); |
| else { |
| if (const_arg2) { |
| tcg_out_movi (s, TCG_TYPE_I32, 0, arg2); |
| tcg_out32 (s, op | RA (arg1) | RB (0)); |
| } |
| else |
| tcg_out32 (s, op | RA (arg1) | RB (arg2)); |
| } |
| |
| } |
| |
| static void tcg_out_bc (TCGContext *s, int bc, int label_index) |
| { |
| TCGLabel *l = &s->labels[label_index]; |
| |
| if (l->has_value) |
| tcg_out32 (s, bc | reloc_pc14_val (s->code_ptr, l->u.value)); |
| else { |
| uint16_t val = *(uint16_t *) &s->code_ptr[2]; |
| |
| /* Thanks to Andrzej Zaborowski */ |
| tcg_out32 (s, bc | (val & 0xfffc)); |
| tcg_out_reloc (s, s->code_ptr - 4, R_PPC_REL14, label_index, 0); |
| } |
| } |
| |
| static void tcg_out_cr7eq_from_cond (TCGContext *s, const TCGArg *args, |
| const int *const_args) |
| { |
| TCGCond cond = args[4]; |
| int op; |
| struct { int bit1; int bit2; int cond2; } bits[] = { |
| [TCG_COND_LT ] = { CR_LT, CR_LT, TCG_COND_LT }, |
| [TCG_COND_LE ] = { CR_LT, CR_GT, TCG_COND_LT }, |
| [TCG_COND_GT ] = { CR_GT, CR_GT, TCG_COND_GT }, |
| [TCG_COND_GE ] = { CR_GT, CR_LT, TCG_COND_GT }, |
| [TCG_COND_LTU] = { CR_LT, CR_LT, TCG_COND_LTU }, |
| [TCG_COND_LEU] = { CR_LT, CR_GT, TCG_COND_LTU }, |
| [TCG_COND_GTU] = { CR_GT, CR_GT, TCG_COND_GTU }, |
| [TCG_COND_GEU] = { CR_GT, CR_LT, TCG_COND_GTU }, |
| }, *b = &bits[cond]; |
| |
| switch (cond) { |
| case TCG_COND_EQ: |
| case TCG_COND_NE: |
| op = (cond == TCG_COND_EQ) ? CRAND : CRNAND; |
| tcg_out_cmp (s, cond, args[0], args[2], const_args[2], 6); |
| tcg_out_cmp (s, cond, args[1], args[3], const_args[3], 7); |
| tcg_out32 (s, op | BT (7, CR_EQ) | BA (6, CR_EQ) | BB (7, CR_EQ)); |
| break; |
| case TCG_COND_LT: |
| case TCG_COND_LE: |
| case TCG_COND_GT: |
| case TCG_COND_GE: |
| case TCG_COND_LTU: |
| case TCG_COND_LEU: |
| case TCG_COND_GTU: |
| case TCG_COND_GEU: |
| op = (b->bit1 != b->bit2) ? CRANDC : CRAND; |
| tcg_out_cmp (s, b->cond2, args[1], args[3], const_args[3], 5); |
| tcg_out_cmp (s, tcg_unsigned_cond (cond), args[0], args[2], |
| const_args[2], 7); |
| tcg_out32 (s, op | BT (7, CR_EQ) | BA (5, CR_EQ) | BB (7, b->bit2)); |
| tcg_out32 (s, CROR | BT (7, CR_EQ) | BA (5, b->bit1) | BB (7, CR_EQ)); |
| break; |
| default: |
| tcg_abort(); |
| } |
| } |
| |
| static void tcg_out_setcond (TCGContext *s, TCGCond cond, TCGArg arg0, |
| TCGArg arg1, TCGArg arg2, int const_arg2) |
| { |
| int crop, sh, arg; |
| |
| switch (cond) { |
| case TCG_COND_EQ: |
| if (const_arg2) { |
| if (!arg2) { |
| arg = arg1; |
| } |
| else { |
| arg = 0; |
| if ((uint16_t) arg2 == arg2) { |
| tcg_out32 (s, XORI | RS (arg1) | RA (0) | arg2); |
| } |
| else { |
| tcg_out_movi (s, TCG_TYPE_I32, 0, arg2); |
| tcg_out32 (s, XOR | SAB (arg1, 0, 0)); |
| } |
| } |
| } |
| else { |
| arg = 0; |
| tcg_out32 (s, XOR | SAB (arg1, 0, arg2)); |
| } |
| tcg_out32 (s, CNTLZW | RS (arg) | RA (0)); |
| tcg_out32 (s, (RLWINM |
| | RA (arg0) |
| | RS (0) |
| | SH (27) |
| | MB (5) |
| | ME (31) |
| ) |
| ); |
| break; |
| |
| case TCG_COND_NE: |
| if (const_arg2) { |
| if (!arg2) { |
| arg = arg1; |
| } |
| else { |
| arg = 0; |
| if ((uint16_t) arg2 == arg2) { |
| tcg_out32 (s, XORI | RS (arg1) | RA (0) | arg2); |
| } |
| else { |
| tcg_out_movi (s, TCG_TYPE_I32, 0, arg2); |
| tcg_out32 (s, XOR | SAB (arg1, 0, 0)); |
| } |
| } |
| } |
| else { |
| arg = 0; |
| tcg_out32 (s, XOR | SAB (arg1, 0, arg2)); |
| } |
| |
| if (arg == arg1 && arg1 == arg0) { |
| tcg_out32 (s, ADDIC | RT (0) | RA (arg) | 0xffff); |
| tcg_out32 (s, SUBFE | TAB (arg0, 0, arg)); |
| } |
| else { |
| tcg_out32 (s, ADDIC | RT (arg0) | RA (arg) | 0xffff); |
| tcg_out32 (s, SUBFE | TAB (arg0, arg0, arg)); |
| } |
| break; |
| |
| case TCG_COND_GT: |
| case TCG_COND_GTU: |
| sh = 30; |
| crop = 0; |
| goto crtest; |
| |
| case TCG_COND_LT: |
| case TCG_COND_LTU: |
| sh = 29; |
| crop = 0; |
| goto crtest; |
| |
| case TCG_COND_GE: |
| case TCG_COND_GEU: |
| sh = 31; |
| crop = CRNOR | BT (7, CR_EQ) | BA (7, CR_LT) | BB (7, CR_LT); |
| goto crtest; |
| |
| case TCG_COND_LE: |
| case TCG_COND_LEU: |
| sh = 31; |
| crop = CRNOR | BT (7, CR_EQ) | BA (7, CR_GT) | BB (7, CR_GT); |
| crtest: |
| tcg_out_cmp (s, cond, arg1, arg2, const_arg2, 7); |
| if (crop) tcg_out32 (s, crop); |
| tcg_out32 (s, MFCR | RT (0)); |
| tcg_out32 (s, (RLWINM |
| | RA (arg0) |
| | RS (0) |
| | SH (sh) |
| | MB (31) |
| | ME (31) |
| ) |
| ); |
| break; |
| |
| default: |
| tcg_abort (); |
| } |
| } |
| |
| static void tcg_out_setcond2 (TCGContext *s, const TCGArg *args, |
| const int *const_args) |
| { |
| tcg_out_cr7eq_from_cond (s, args + 1, const_args + 1); |
| tcg_out32 (s, MFCR | RT (0)); |
| tcg_out32 (s, (RLWINM |
| | RA (args[0]) |
| | RS (0) |
| | SH (31) |
| | MB (31) |
| | ME (31) |
| ) |
| ); |
| } |
| |
| static void tcg_out_brcond (TCGContext *s, TCGCond cond, |
| TCGArg arg1, TCGArg arg2, int const_arg2, |
| int label_index) |
| { |
| tcg_out_cmp (s, cond, arg1, arg2, const_arg2, 7); |
| tcg_out_bc (s, tcg_to_bc[cond], label_index); |
| } |
| |
| /* XXX: we implement it at the target level to avoid having to |
| handle cross basic blocks temporaries */ |
| static void tcg_out_brcond2 (TCGContext *s, const TCGArg *args, |
| const int *const_args) |
| { |
| tcg_out_cr7eq_from_cond (s, args, const_args); |
| tcg_out_bc (s, (BC | BI (7, CR_EQ) | BO_COND_TRUE), args[5]); |
| } |
| |
| void ppc_tb_set_jmp_target (unsigned long jmp_addr, unsigned long addr) |
| { |
| uint32_t *ptr; |
| long disp = addr - jmp_addr; |
| unsigned long patch_size; |
| |
| ptr = (uint32_t *)jmp_addr; |
| |
| if ((disp << 6) >> 6 != disp) { |
| ptr[0] = 0x3c000000 | (addr >> 16); /* lis 0,addr@ha */ |
| ptr[1] = 0x60000000 | (addr & 0xffff); /* la 0,addr@l(0) */ |
| ptr[2] = 0x7c0903a6; /* mtctr 0 */ |
| ptr[3] = 0x4e800420; /* brctr */ |
| patch_size = 16; |
| } else { |
| /* patch the branch destination */ |
| if (disp != 16) { |
| *ptr = 0x48000000 | (disp & 0x03fffffc); /* b disp */ |
| patch_size = 4; |
| } else { |
| ptr[0] = 0x60000000; /* nop */ |
| ptr[1] = 0x60000000; |
| ptr[2] = 0x60000000; |
| ptr[3] = 0x60000000; |
| patch_size = 16; |
| } |
| } |
| /* flush icache */ |
| flush_icache_range(jmp_addr, jmp_addr + patch_size); |
| } |
| |
| static 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_R3, args[0]); |
| tcg_out_b (s, 0, (tcg_target_long) tb_ret_addr); |
| break; |
| case INDEX_op_goto_tb: |
| if (s->tb_jmp_offset) { |
| /* direct jump method */ |
| |
| s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf; |
| s->code_ptr += 16; |
| } |
| else { |
| tcg_abort (); |
| } |
| s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf; |
| break; |
| case INDEX_op_br: |
| { |
| TCGLabel *l = &s->labels[args[0]]; |
| |
| if (l->has_value) { |
| tcg_out_b (s, 0, l->u.value); |
| } |
| else { |
| uint32_t val = *(uint32_t *) s->code_ptr; |
| |
| /* Thanks to Andrzej Zaborowski */ |
| tcg_out32 (s, B | (val & 0x3fffffc)); |
| tcg_out_reloc (s, s->code_ptr - 4, R_PPC_REL24, args[0], 0); |
| } |
| } |
| break; |
| case INDEX_op_call: |
| tcg_out_call (s, args[0], const_args[0]); |
| break; |
| case INDEX_op_jmp: |
| if (const_args[0]) { |
| tcg_out_b (s, 0, args[0]); |
| } |
| else { |
| tcg_out32 (s, MTSPR | RS (args[0]) | CTR); |
| tcg_out32 (s, BCCTR | BO_ALWAYS); |
| } |
| 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, args[0], args[1], args[2], LBZ, LBZX); |
| break; |
| case INDEX_op_ld8s_i32: |
| tcg_out_ldst (s, args[0], args[1], args[2], LBZ, LBZX); |
| tcg_out32 (s, EXTSB | RS (args[0]) | RA (args[0])); |
| break; |
| case INDEX_op_ld16u_i32: |
| tcg_out_ldst (s, args[0], args[1], args[2], LHZ, LHZX); |
| break; |
| case INDEX_op_ld16s_i32: |
| tcg_out_ldst (s, args[0], args[1], args[2], LHA, LHAX); |
| break; |
| case INDEX_op_ld_i32: |
| tcg_out_ldst (s, args[0], args[1], args[2], LWZ, LWZX); |
| break; |
| case INDEX_op_st8_i32: |
| tcg_out_ldst (s, args[0], args[1], args[2], STB, STBX); |
| break; |
| case INDEX_op_st16_i32: |
| tcg_out_ldst (s, args[0], args[1], args[2], STH, STHX); |
| break; |
| case INDEX_op_st_i32: |
| tcg_out_ldst (s, args[0], args[1], args[2], STW, STWX); |
| break; |
| |
| case INDEX_op_add_i32: |
| if (const_args[2]) |
| ppc_addi (s, args[0], args[1], args[2]); |
| else |
| tcg_out32 (s, ADD | TAB (args[0], args[1], args[2])); |
| break; |
| case INDEX_op_sub_i32: |
| if (const_args[2]) |
| ppc_addi (s, args[0], args[1], -args[2]); |
| else |
| tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1])); |
| break; |
| |
| case INDEX_op_and_i32: |
| if (const_args[2]) { |
| uint32_t c; |
| |
| c = args[2]; |
| |
| if (!c) { |
| tcg_out_movi (s, TCG_TYPE_I32, args[0], 0); |
| break; |
| } |
| #ifdef __PPU__ |
| uint32_t t, n; |
| int mb, me; |
| |
| n = c ^ -(c & 1); |
| t = n + (n & -n); |
| |
| if ((t & (t - 1)) == 0) { |
| int lzc, tzc; |
| |
| if ((c & 0x80000001) == 0x80000001) { |
| lzc = clz32 (n); |
| tzc = ctz32 (n); |
| |
| mb = 32 - tzc; |
| me = lzc - 1; |
| } |
| else { |
| lzc = clz32 (c); |
| tzc = ctz32 (c); |
| |
| mb = lzc; |
| me = 31 - tzc; |
| } |
| |
| tcg_out32 (s, (RLWINM |
| | RA (args[0]) |
| | RS (args[1]) |
| | SH (0) |
| | MB (mb) |
| | ME (me) |
| ) |
| ); |
| } |
| else |
| #endif /* !__PPU__ */ |
| { |
| if ((c & 0xffff) == c) |
| tcg_out32 (s, ANDI | RS (args[1]) | RA (args[0]) | c); |
| else if ((c & 0xffff0000) == c) |
| tcg_out32 (s, ANDIS | RS (args[1]) | RA (args[0]) |
| | ((c >> 16) & 0xffff)); |
| else { |
| tcg_out_movi (s, TCG_TYPE_I32, 0, c); |
| tcg_out32 (s, AND | SAB (args[1], args[0], 0)); |
| } |
| } |
| } |
| else |
| tcg_out32 (s, AND | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_or_i32: |
| if (const_args[2]) { |
| if (args[2] & 0xffff) { |
| tcg_out32 (s, ORI | RS (args[1]) | RA (args[0]) |
| | (args[2] & 0xffff)); |
| if (args[2] >> 16) |
| tcg_out32 (s, ORIS | RS (args[0]) | RA (args[0]) |
| | ((args[2] >> 16) & 0xffff)); |
| } |
| else { |
| tcg_out32 (s, ORIS | RS (args[1]) | RA (args[0]) |
| | ((args[2] >> 16) & 0xffff)); |
| } |
| } |
| else |
| tcg_out32 (s, OR | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_xor_i32: |
| if (const_args[2]) { |
| if ((args[2] & 0xffff) == args[2]) |
| tcg_out32 (s, XORI | RS (args[1]) | RA (args[0]) |
| | (args[2] & 0xffff)); |
| else if ((args[2] & 0xffff0000) == args[2]) |
| tcg_out32 (s, XORIS | RS (args[1]) | RA (args[0]) |
| | ((args[2] >> 16) & 0xffff)); |
| else { |
| tcg_out_movi (s, TCG_TYPE_I32, 0, args[2]); |
| tcg_out32 (s, XOR | SAB (args[1], args[0], 0)); |
| } |
| } |
| else |
| tcg_out32 (s, XOR | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_andc_i32: |
| tcg_out32 (s, ANDC | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_orc_i32: |
| tcg_out32 (s, ORC | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_eqv_i32: |
| tcg_out32 (s, EQV | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_nand_i32: |
| tcg_out32 (s, NAND | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_nor_i32: |
| tcg_out32 (s, NOR | SAB (args[1], args[0], args[2])); |
| break; |
| |
| case INDEX_op_mul_i32: |
| if (const_args[2]) { |
| if (args[2] == (int16_t) args[2]) |
| tcg_out32 (s, MULLI | RT (args[0]) | RA (args[1]) |
| | (args[2] & 0xffff)); |
| else { |
| tcg_out_movi (s, TCG_TYPE_I32, 0, args[2]); |
| tcg_out32 (s, MULLW | TAB (args[0], args[1], 0)); |
| } |
| } |
| else |
| tcg_out32 (s, MULLW | TAB (args[0], args[1], args[2])); |
| break; |
| |
| case INDEX_op_div_i32: |
| tcg_out32 (s, DIVW | TAB (args[0], args[1], args[2])); |
| break; |
| |
| case INDEX_op_divu_i32: |
| tcg_out32 (s, DIVWU | TAB (args[0], args[1], args[2])); |
| break; |
| |
| case INDEX_op_rem_i32: |
| tcg_out32 (s, DIVW | TAB (0, args[1], args[2])); |
| tcg_out32 (s, MULLW | TAB (0, 0, args[2])); |
| tcg_out32 (s, SUBF | TAB (args[0], 0, args[1])); |
| break; |
| |
| case INDEX_op_remu_i32: |
| tcg_out32 (s, DIVWU | TAB (0, args[1], args[2])); |
| tcg_out32 (s, MULLW | TAB (0, 0, args[2])); |
| tcg_out32 (s, SUBF | TAB (args[0], 0, args[1])); |
| break; |
| |
| case INDEX_op_mulu2_i32: |
| if (args[0] == args[2] || args[0] == args[3]) { |
| tcg_out32 (s, MULLW | TAB (0, args[2], args[3])); |
| tcg_out32 (s, MULHWU | TAB (args[1], args[2], args[3])); |
| tcg_out_mov (s, TCG_TYPE_I32, args[0], 0); |
| } |
| else { |
| tcg_out32 (s, MULLW | TAB (args[0], args[2], args[3])); |
| tcg_out32 (s, MULHWU | TAB (args[1], args[2], args[3])); |
| } |
| break; |
| |
| case INDEX_op_shl_i32: |
| if (const_args[2]) { |
| tcg_out32 (s, (RLWINM |
| | RA (args[0]) |
| | RS (args[1]) |
| | SH (args[2]) |
| | MB (0) |
| | ME (31 - args[2]) |
| ) |
| ); |
| } |
| else |
| tcg_out32 (s, SLW | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_shr_i32: |
| if (const_args[2]) { |
| tcg_out32 (s, (RLWINM |
| | RA (args[0]) |
| | RS (args[1]) |
| | SH (32 - args[2]) |
| | MB (args[2]) |
| | ME (31) |
| ) |
| ); |
| } |
| else |
| tcg_out32 (s, SRW | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_sar_i32: |
| if (const_args[2]) |
| tcg_out32 (s, SRAWI | RS (args[1]) | RA (args[0]) | SH (args[2])); |
| else |
| tcg_out32 (s, SRAW | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_rotl_i32: |
| { |
| int op = 0 |
| | RA (args[0]) |
| | RS (args[1]) |
| | MB (0) |
| | ME (31) |
| | (const_args[2] ? RLWINM | SH (args[2]) |
| : RLWNM | RB (args[2])) |
| ; |
| tcg_out32 (s, op); |
| } |
| break; |
| case INDEX_op_rotr_i32: |
| if (const_args[2]) { |
| if (!args[2]) { |
| tcg_out_mov (s, TCG_TYPE_I32, args[0], args[1]); |
| } |
| else { |
| tcg_out32 (s, RLWINM |
| | RA (args[0]) |
| | RS (args[1]) |
| | SH (32 - args[2]) |
| | MB (0) |
| | ME (31) |
| ); |
| } |
| } |
| else { |
| tcg_out32 (s, SUBFIC | RT (0) | RA (args[2]) | 32); |
| tcg_out32 (s, RLWNM |
| | RA (args[0]) |
| | RS (args[1]) |
| | RB (0) |
| | MB (0) |
| | ME (31) |
| ); |
| } |
| break; |
| |
| case INDEX_op_add2_i32: |
| if (args[0] == args[3] || args[0] == args[5]) { |
| tcg_out32 (s, ADDC | TAB (0, args[2], args[4])); |
| tcg_out32 (s, ADDE | TAB (args[1], args[3], args[5])); |
| tcg_out_mov (s, TCG_TYPE_I32, args[0], 0); |
| } |
| else { |
| tcg_out32 (s, ADDC | TAB (args[0], args[2], args[4])); |
| tcg_out32 (s, ADDE | TAB (args[1], args[3], args[5])); |
| } |
| break; |
| case INDEX_op_sub2_i32: |
| if (args[0] == args[3] || args[0] == args[5]) { |
| tcg_out32 (s, SUBFC | TAB (0, args[4], args[2])); |
| tcg_out32 (s, SUBFE | TAB (args[1], args[5], args[3])); |
| tcg_out_mov (s, TCG_TYPE_I32, args[0], 0); |
| } |
| else { |
| tcg_out32 (s, SUBFC | TAB (args[0], args[4], args[2])); |
| tcg_out32 (s, SUBFE | TAB (args[1], args[5], args[3])); |
| } |
| break; |
| |
| case INDEX_op_brcond_i32: |
| /* |
| args[0] = r0 |
| args[1] = r1 |
| args[2] = cond |
| args[3] = r1 is const |
| args[4] = label_index |
| */ |
| tcg_out_brcond (s, args[2], args[0], args[1], const_args[1], args[3]); |
| break; |
| case INDEX_op_brcond2_i32: |
| tcg_out_brcond2(s, args, const_args); |
| break; |
| |
| case INDEX_op_neg_i32: |
| tcg_out32 (s, NEG | RT (args[0]) | RA (args[1])); |
| break; |
| |
| case INDEX_op_not_i32: |
| tcg_out32 (s, NOR | SAB (args[1], args[0], args[1])); |
| 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; |
| |
| case INDEX_op_ext8s_i32: |
| tcg_out32 (s, EXTSB | RS (args[1]) | RA (args[0])); |
| break; |
| case INDEX_op_ext8u_i32: |
| tcg_out32 (s, RLWINM |
| | RA (args[0]) |
| | RS (args[1]) |
| | SH (0) |
| | MB (24) |
| | ME (31) |
| ); |
| break; |
| case INDEX_op_ext16s_i32: |
| tcg_out32 (s, EXTSH | RS (args[1]) | RA (args[0])); |
| break; |
| case INDEX_op_ext16u_i32: |
| tcg_out32 (s, RLWINM |
| | RA (args[0]) |
| | RS (args[1]) |
| | SH (0) |
| | MB (16) |
| | ME (31) |
| ); |
| break; |
| |
| case INDEX_op_setcond_i32: |
| tcg_out_setcond (s, args[3], args[0], args[1], args[2], const_args[2]); |
| break; |
| case INDEX_op_setcond2_i32: |
| tcg_out_setcond2 (s, args, const_args); |
| break; |
| |
| case INDEX_op_bswap16_i32: |
| /* Stolen from gcc's builtin_bswap16 */ |
| |
| /* a1 = abcd */ |
| |
| /* r0 = (a1 << 8) & 0xff00 # 00d0 */ |
| tcg_out32 (s, RLWINM |
| | RA (0) |
| | RS (args[1]) |
| | SH (8) |
| | MB (16) |
| | ME (23) |
| ); |
| |
| /* a0 = rotate_left (a1, 24) & 0xff # 000c */ |
| tcg_out32 (s, RLWINM |
| | RA (args[0]) |
| | RS (args[1]) |
| | SH (24) |
| | MB (24) |
| | ME (31) |
| ); |
| |
| /* a0 = a0 | r0 # 00dc */ |
| tcg_out32 (s, OR | SAB (0, args[0], args[0])); |
| break; |
| |
| case INDEX_op_bswap32_i32: |
| /* Stolen from gcc's builtin_bswap32 */ |
| { |
| int a0 = args[0]; |
| |
| /* a1 = args[1] # abcd */ |
| |
| if (a0 == args[1]) { |
| a0 = 0; |
| } |
| |
| /* a0 = rotate_left (a1, 8) # bcda */ |
| tcg_out32 (s, RLWINM |
| | RA (a0) |
| | RS (args[1]) |
| | SH (8) |
| | MB (0) |
| | ME (31) |
| ); |
| |
| /* a0 = (a0 & ~0xff000000) | ((a1 << 24) & 0xff000000) # dcda */ |
| tcg_out32 (s, RLWIMI |
| | RA (a0) |
| | RS (args[1]) |
| | SH (24) |
| | MB (0) |
| | ME (7) |
| ); |
| |
| /* a0 = (a0 & ~0x0000ff00) | ((a1 << 24) & 0x0000ff00) # dcba */ |
| tcg_out32 (s, RLWIMI |
| | RA (a0) |
| | RS (args[1]) |
| | SH (24) |
| | MB (16) |
| | ME (23) |
| ); |
| |
| if (!a0) { |
| tcg_out_mov (s, TCG_TYPE_I32, args[0], a0); |
| } |
| } |
| break; |
| |
| default: |
| tcg_dump_ops (s, stderr); |
| tcg_abort (); |
| } |
| } |
| |
| static const TCGTargetOpDef ppc_op_defs[] = { |
| { INDEX_op_exit_tb, { } }, |
| { INDEX_op_goto_tb, { } }, |
| { INDEX_op_call, { "ri" } }, |
| { INDEX_op_jmp, { "ri" } }, |
| { 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, { "r", "r" } }, |
| { INDEX_op_st16_i32, { "r", "r" } }, |
| { INDEX_op_st_i32, { "r", "r" } }, |
| |
| { INDEX_op_add_i32, { "r", "r", "ri" } }, |
| { INDEX_op_mul_i32, { "r", "r", "ri" } }, |
| { INDEX_op_div_i32, { "r", "r", "r" } }, |
| { INDEX_op_divu_i32, { "r", "r", "r" } }, |
| { INDEX_op_rem_i32, { "r", "r", "r" } }, |
| { INDEX_op_remu_i32, { "r", "r", "r" } }, |
| { INDEX_op_mulu2_i32, { "r", "r", "r", "r" } }, |
| { INDEX_op_sub_i32, { "r", "r", "ri" } }, |
| { INDEX_op_and_i32, { "r", "r", "ri" } }, |
| { INDEX_op_or_i32, { "r", "r", "ri" } }, |
| { INDEX_op_xor_i32, { "r", "r", "ri" } }, |
| |
| { INDEX_op_shl_i32, { "r", "r", "ri" } }, |
| { INDEX_op_shr_i32, { "r", "r", "ri" } }, |
| { INDEX_op_sar_i32, { "r", "r", "ri" } }, |
| |
| { INDEX_op_rotl_i32, { "r", "r", "ri" } }, |
| { INDEX_op_rotr_i32, { "r", "r", "ri" } }, |
| |
| { INDEX_op_brcond_i32, { "r", "ri" } }, |
| |
| { INDEX_op_add2_i32, { "r", "r", "r", "r", "r", "r" } }, |
| { INDEX_op_sub2_i32, { "r", "r", "r", "r", "r", "r" } }, |
| { INDEX_op_brcond2_i32, { "r", "r", "r", "r" } }, |
| |
| { INDEX_op_neg_i32, { "r", "r" } }, |
| { INDEX_op_not_i32, { "r", "r" } }, |
| |
| { INDEX_op_andc_i32, { "r", "r", "r" } }, |
| { INDEX_op_orc_i32, { "r", "r", "r" } }, |
| { INDEX_op_eqv_i32, { "r", "r", "r" } }, |
| { INDEX_op_nand_i32, { "r", "r", "r" } }, |
| { INDEX_op_nor_i32, { "r", "r", "r" } }, |
| |
| { INDEX_op_setcond_i32, { "r", "r", "ri" } }, |
| { INDEX_op_setcond2_i32, { "r", "r", "r", "ri", "ri" } }, |
| |
| { INDEX_op_bswap16_i32, { "r", "r" } }, |
| { INDEX_op_bswap32_i32, { "r", "r" } }, |
| |
| #if TARGET_LONG_BITS == 32 |
| { INDEX_op_qemu_ld8u, { "r", "L" } }, |
| { INDEX_op_qemu_ld8s, { "r", "L" } }, |
| { INDEX_op_qemu_ld16u, { "r", "L" } }, |
| { INDEX_op_qemu_ld16s, { "r", "L" } }, |
| { INDEX_op_qemu_ld32, { "r", "L" } }, |
| { INDEX_op_qemu_ld64, { "r", "r", "L" } }, |
| |
| { INDEX_op_qemu_st8, { "K", "K" } }, |
| { INDEX_op_qemu_st16, { "K", "K" } }, |
| { INDEX_op_qemu_st32, { "K", "K" } }, |
| { INDEX_op_qemu_st64, { "M", "M", "M" } }, |
| #else |
| { INDEX_op_qemu_ld8u, { "r", "L", "L" } }, |
| { INDEX_op_qemu_ld8s, { "r", "L", "L" } }, |
| { INDEX_op_qemu_ld16u, { "r", "L", "L" } }, |
| { INDEX_op_qemu_ld16s, { "r", "L", "L" } }, |
| { INDEX_op_qemu_ld32, { "r", "L", "L" } }, |
| { INDEX_op_qemu_ld64, { "r", "L", "L", "L" } }, |
| |
| { INDEX_op_qemu_st8, { "K", "K", "K" } }, |
| { INDEX_op_qemu_st16, { "K", "K", "K" } }, |
| { INDEX_op_qemu_st32, { "K", "K", "K" } }, |
| { INDEX_op_qemu_st64, { "M", "M", "M", "M" } }, |
| #endif |
| |
| { INDEX_op_ext8s_i32, { "r", "r" } }, |
| { INDEX_op_ext8u_i32, { "r", "r" } }, |
| { INDEX_op_ext16s_i32, { "r", "r" } }, |
| { INDEX_op_ext16u_i32, { "r", "r" } }, |
| |
| { -1 }, |
| }; |
| |
| static void tcg_target_init(TCGContext *s) |
| { |
| tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffffffff); |
| tcg_regset_set32(tcg_target_call_clobber_regs, 0, |
| (1 << TCG_REG_R0) | |
| #ifdef _CALL_DARWIN |
| (1 << TCG_REG_R2) | |
| #endif |
| (1 << TCG_REG_R3) | |
| (1 << TCG_REG_R4) | |
| (1 << TCG_REG_R5) | |
| (1 << TCG_REG_R6) | |
| (1 << TCG_REG_R7) | |
| (1 << TCG_REG_R8) | |
| (1 << TCG_REG_R9) | |
| (1 << TCG_REG_R10) | |
| (1 << TCG_REG_R11) | |
| (1 << TCG_REG_R12) |
| ); |
| |
| tcg_regset_clear(s->reserved_regs); |
| tcg_regset_set_reg(s->reserved_regs, TCG_REG_R0); |
| tcg_regset_set_reg(s->reserved_regs, TCG_REG_R1); |
| #ifndef _CALL_DARWIN |
| tcg_regset_set_reg(s->reserved_regs, TCG_REG_R2); |
| #endif |
| #ifdef _CALL_SYSV |
| tcg_regset_set_reg(s->reserved_regs, TCG_REG_R13); |
| #endif |
| |
| tcg_add_target_add_op_defs(ppc_op_defs); |
| } |
