| /* |
| * 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. |
| */ |
| |
| #define TCG_CT_CONST_S16 0x100 |
| #define TCG_CT_CONST_U16 0x200 |
| #define TCG_CT_CONST_S32 0x400 |
| #define TCG_CT_CONST_U32 0x800 |
| #define TCG_CT_CONST_ZERO 0x1000 |
| |
| static uint8_t *tb_ret_addr; |
| |
| #define FAST_PATH |
| |
| #if TARGET_LONG_BITS == 32 |
| #define LD_ADDR LWZU |
| #define CMP_L 0 |
| #else |
| #define LD_ADDR LDU |
| #define CMP_L (1<<21) |
| #endif |
| |
| #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 __APPLE__ |
| 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 __APPLE__ |
| TCG_REG_R11, |
| #endif |
| TCG_REG_R12, |
| 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[] = { |
| TCG_REG_R3 |
| }; |
| |
| static const int tcg_target_callee_save_regs[] = { |
| #ifdef __APPLE__ |
| TCG_REG_R11, |
| #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 */ |
| 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 << 38) >> 38 != 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 (); |
| } |
| } |
| |
| /* 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; |
| 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); |
| #ifdef CONFIG_SOFTMMU |
| tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4); |
| tcg_regset_reset_reg (ct->u.regs, TCG_REG_R5); |
| #endif |
| break; |
| case 'S': /* qemu_st constraint */ |
| ct->ct |= TCG_CT_REG; |
| tcg_regset_set32 (ct->u.regs, 0, 0xffffffff); |
| tcg_regset_reset_reg (ct->u.regs, TCG_REG_R3); |
| #ifdef CONFIG_SOFTMMU |
| 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); |
| #endif |
| break; |
| case 'I': |
| ct->ct |= TCG_CT_CONST_S16; |
| break; |
| case 'J': |
| ct->ct |= TCG_CT_CONST_U16; |
| break; |
| case 'T': |
| ct->ct |= TCG_CT_CONST_S32; |
| break; |
| case 'U': |
| ct->ct |= TCG_CT_CONST_U32; |
| break; |
| case 'Z': |
| 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 int tcg_target_const_match (tcg_target_long val, |
| const TCGArgConstraint *arg_ct) |
| { |
| int ct = arg_ct->ct; |
| if (ct & TCG_CT_CONST) { |
| return 1; |
| } else if ((ct & TCG_CT_CONST_S16) && val == (int16_t)val) { |
| return 1; |
| } else if ((ct & TCG_CT_CONST_U16) && val == (uint16_t)val) { |
| return 1; |
| } else if ((ct & TCG_CT_CONST_S32) && val == (int32_t)val) { |
| return 1; |
| } else if ((ct & TCG_CT_CONST_U32) && val == (uint32_t)val) { |
| return 1; |
| } else if ((ct & TCG_CT_CONST_ZERO) && val == 0) { |
| return 1; |
| } |
| return 0; |
| } |
| |
| #define OPCD(opc) ((opc)<<26) |
| #define XO19(opc) (OPCD(19)|((opc)<<1)) |
| #define XO30(opc) (OPCD(30)|((opc)<<2)) |
| #define XO31(opc) (OPCD(31)|((opc)<<1)) |
| #define XO58(opc) (OPCD(58)|(opc)) |
| #define XO62(opc) (OPCD(62)|(opc)) |
| |
| #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 STD XO62( 0) |
| #define STDU XO62( 1) |
| #define STDX XO31(149) |
| |
| #define LD XO58( 0) |
| #define LDX XO31( 21) |
| #define LDU XO58( 1) |
| #define LWA XO58( 2) |
| #define LWAX XO31(341) |
| |
| #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 RLWINM OPCD( 21) |
| |
| #define RLDICL XO30( 0) |
| #define RLDICR XO30( 1) |
| #define RLDIMI XO30( 3) |
| |
| #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 EXTSW XO31(986) |
| #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 NOR XO31(124) |
| #define CNTLZW XO31( 26) |
| #define CNTLZD XO31( 58) |
| |
| #define MULLD XO31(233) |
| #define MULHD XO31( 73) |
| #define MULHDU XO31( 9) |
| #define DIVD XO31(489) |
| #define DIVDU XO31(457) |
| |
| #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 SLD XO31( 27) |
| #define SRD XO31(539) |
| #define SRAD XO31(794) |
| #define SRADI XO31(413<<1) |
| |
| #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 MB64(b) ((b)<<5) |
| |
| #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 TAI(s, a, i) (RT(s) | RA(a) | ((i) & 0xffff)) |
| #define SAI(s, a, i) (RS(s) | RA(a) | ((i) & 0xffff)) |
| |
| #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[] = { |
| [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 inline void tcg_out_mov(TCGContext *s, TCGType type, |
| TCGReg ret, TCGReg arg) |
| { |
| tcg_out32 (s, OR | SAB (arg, ret, arg)); |
| } |
| |
| static inline void tcg_out_rld(TCGContext *s, int op, TCGReg ra, TCGReg rs, |
| int sh, int mb) |
| { |
| sh = SH (sh & 0x1f) | (((sh >> 5) & 1) << 1); |
| mb = MB64 ((mb >> 5) | ((mb << 1) & 0x3f)); |
| tcg_out32 (s, op | RA (ra) | RS (rs) | sh | mb); |
| } |
| |
| static inline void tcg_out_rlw(TCGContext *s, int op, TCGReg ra, TCGReg rs, |
| int sh, int mb, int me) |
| { |
| tcg_out32(s, op | RA(ra) | RS(rs) | SH(sh) | MB(mb) | ME(me)); |
| } |
| |
| static inline void tcg_out_ext32u(TCGContext *s, TCGReg dst, TCGReg src) |
| { |
| tcg_out_rld(s, RLDICL, dst, src, 0, 32); |
| } |
| |
| static inline void tcg_out_shli64(TCGContext *s, TCGReg dst, TCGReg src, int c) |
| { |
| tcg_out_rld(s, RLDICR, dst, src, c, 63 - c); |
| } |
| |
| static inline void tcg_out_shri64(TCGContext *s, TCGReg dst, TCGReg src, int c) |
| { |
| tcg_out_rld(s, RLDICL, dst, src, 64 - c, c); |
| } |
| |
| static void tcg_out_movi32(TCGContext *s, TCGReg ret, int32_t arg) |
| { |
| if (arg == (int16_t) arg) { |
| tcg_out32(s, ADDI | TAI(ret, 0, arg)); |
| } else { |
| tcg_out32(s, ADDIS | TAI(ret, 0, arg >> 16)); |
| if (arg & 0xffff) { |
| tcg_out32(s, ORI | SAI(ret, ret, arg)); |
| } |
| } |
| } |
| |
| static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg ret, |
| tcg_target_long arg) |
| { |
| if (type == TCG_TYPE_I32 || arg == (int32_t)arg) { |
| tcg_out_movi32(s, ret, arg); |
| } else if (arg == (uint32_t)arg && !(arg & 0x8000)) { |
| tcg_out32(s, ADDI | TAI(ret, 0, arg)); |
| tcg_out32(s, ORIS | SAI(ret, ret, arg >> 16)); |
| } else { |
| int32_t high = arg >> 32; |
| tcg_out_movi32(s, ret, high); |
| if (high) { |
| tcg_out_shli64(s, ret, ret, 32); |
| } |
| if (arg & 0xffff0000) { |
| tcg_out32(s, ORIS | SAI(ret, ret, arg >> 16)); |
| } |
| if (arg & 0xffff) { |
| tcg_out32(s, ORI | SAI(ret, ret, arg)); |
| } |
| } |
| } |
| |
| static bool mask_operand(uint32_t c, int *mb, int *me) |
| { |
| uint32_t lsb, test; |
| |
| /* Accept a bit pattern like: |
| 0....01....1 |
| 1....10....0 |
| 0..01..10..0 |
| Keep track of the transitions. */ |
| if (c == 0 || c == -1) { |
| return false; |
| } |
| test = c; |
| lsb = test & -test; |
| test += lsb; |
| if (test & (test - 1)) { |
| return false; |
| } |
| |
| *me = clz32(lsb); |
| *mb = test ? clz32(test & -test) + 1 : 0; |
| return true; |
| } |
| |
| static bool mask64_operand(uint64_t c, int *mb, int *me) |
| { |
| uint64_t lsb; |
| |
| if (c == 0) { |
| return false; |
| } |
| |
| lsb = c & -c; |
| /* Accept 1..10..0. */ |
| if (c == -lsb) { |
| *mb = 0; |
| *me = clz64(lsb); |
| return true; |
| } |
| /* Accept 0..01..1. */ |
| if (lsb == 1 && (c & (c + 1)) == 0) { |
| *mb = clz64(c + 1) + 1; |
| *me = 63; |
| return true; |
| } |
| return false; |
| } |
| |
| static void tcg_out_andi32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c) |
| { |
| int mb, me; |
| |
| if ((c & 0xffff) == c) { |
| tcg_out32(s, ANDI | SAI(src, dst, c)); |
| return; |
| } else if ((c & 0xffff0000) == c) { |
| tcg_out32(s, ANDIS | SAI(src, dst, c >> 16)); |
| return; |
| } else if (mask_operand(c, &mb, &me)) { |
| tcg_out_rlw(s, RLWINM, dst, src, 0, mb, me); |
| } else { |
| tcg_out_movi(s, TCG_TYPE_I32, 0, c); |
| tcg_out32(s, AND | SAB(src, dst, 0)); |
| } |
| } |
| |
| static void tcg_out_andi64(TCGContext *s, TCGReg dst, TCGReg src, uint64_t c) |
| { |
| int mb, me; |
| |
| if ((c & 0xffff) == c) { |
| tcg_out32(s, ANDI | SAI(src, dst, c)); |
| return; |
| } else if ((c & 0xffff0000) == c) { |
| tcg_out32(s, ANDIS | SAI(src, dst, c >> 16)); |
| return; |
| } else if (mask64_operand(c, &mb, &me)) { |
| if (mb == 0) { |
| tcg_out_rld(s, RLDICR, dst, src, 0, me); |
| } else { |
| tcg_out_rld(s, RLDICL, dst, src, 0, mb); |
| } |
| } else { |
| tcg_out_movi(s, TCG_TYPE_I64, 0, c); |
| tcg_out32(s, AND | SAB(src, dst, 0)); |
| } |
| } |
| |
| static void tcg_out_zori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c, |
| int op_lo, int op_hi) |
| { |
| if (c >> 16) { |
| tcg_out32(s, op_hi | SAI(src, dst, c >> 16)); |
| src = dst; |
| } |
| if (c & 0xffff) { |
| tcg_out32(s, op_lo | SAI(src, dst, c)); |
| src = dst; |
| } |
| } |
| |
| static void tcg_out_ori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c) |
| { |
| tcg_out_zori32(s, dst, src, c, ORI, ORIS); |
| } |
| |
| static void tcg_out_xori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c) |
| { |
| tcg_out_zori32(s, dst, src, c, XORI, XORIS); |
| } |
| |
| 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 << 38) >> 38 == disp) |
| tcg_out32 (s, B | (disp & 0x3fffffc) | mask); |
| else { |
| tcg_out_movi (s, TCG_TYPE_I64, 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 __APPLE__ |
| if (const_arg) { |
| tcg_out_b (s, LK, arg); |
| } |
| else { |
| tcg_out32 (s, MTSPR | RS (arg) | LR); |
| tcg_out32 (s, BCLR | BO_ALWAYS | LK); |
| } |
| #else |
| int reg; |
| |
| if (const_arg) { |
| reg = 2; |
| tcg_out_movi (s, TCG_TYPE_I64, reg, arg); |
| } |
| else reg = arg; |
| |
| tcg_out32 (s, LD | RT (0) | RA (reg)); |
| tcg_out32 (s, MTSPR | RA (0) | CTR); |
| tcg_out32 (s, LD | RT (11) | RA (reg) | 16); |
| tcg_out32 (s, LD | RT (2) | RA (reg) | 8); |
| tcg_out32 (s, BCCTR | BO_ALWAYS | LK); |
| #endif |
| } |
| |
| static void tcg_out_ldst(TCGContext *s, TCGReg ret, TCGReg addr, |
| int offset, int op1, int op2) |
| { |
| if (offset == (int16_t) offset) { |
| tcg_out32(s, op1 | TAI(ret, addr, offset)); |
| } else { |
| tcg_out_movi(s, TCG_TYPE_I64, 0, offset); |
| tcg_out32(s, op2 | TAB(ret, addr, 0)); |
| } |
| } |
| |
| static void tcg_out_ldsta(TCGContext *s, TCGReg ret, TCGReg addr, |
| int offset, int op1, int op2) |
| { |
| if (offset == (int16_t) (offset & ~3)) { |
| tcg_out32(s, op1 | TAI(ret, addr, offset)); |
| } else { |
| tcg_out_movi(s, TCG_TYPE_I64, 0, offset); |
| tcg_out32(s, op2 | TAB(ret, addr, 0)); |
| } |
| } |
| |
| #if defined (CONFIG_SOFTMMU) |
| |
| #include "exec/softmmu_defs.h" |
| |
| /* helper signature: helper_ld_mmu(CPUState *env, target_ulong addr, |
| int mmu_idx) */ |
| static const void * const qemu_ld_helpers[4] = { |
| helper_ldb_mmu, |
| helper_ldw_mmu, |
| helper_ldl_mmu, |
| helper_ldq_mmu, |
| }; |
| |
| /* helper signature: helper_st_mmu(CPUState *env, target_ulong addr, |
| uintxx_t val, int mmu_idx) */ |
| static const void * const qemu_st_helpers[4] = { |
| helper_stb_mmu, |
| helper_stw_mmu, |
| helper_stl_mmu, |
| helper_stq_mmu, |
| }; |
| |
| static void tcg_out_tlb_read(TCGContext *s, TCGReg r0, TCGReg r1, TCGReg r2, |
| TCGReg addr_reg, int s_bits, int offset) |
| { |
| #if TARGET_LONG_BITS == 32 |
| tcg_out_ext32u(s, addr_reg, addr_reg); |
| |
| tcg_out_rlw(s, RLWINM, r0, addr_reg, |
| 32 - (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS), |
| 32 - (CPU_TLB_BITS + CPU_TLB_ENTRY_BITS), |
| 31 - CPU_TLB_ENTRY_BITS); |
| tcg_out32(s, ADD | TAB(r0, r0, TCG_AREG0)); |
| tcg_out32(s, LWZU | TAI(r1, r0, offset)); |
| tcg_out_rlw(s, RLWINM, r2, addr_reg, 0, |
| (32 - s_bits) & 31, 31 - TARGET_PAGE_BITS); |
| #else |
| tcg_out_rld (s, RLDICL, r0, addr_reg, |
| 64 - TARGET_PAGE_BITS, |
| 64 - CPU_TLB_BITS); |
| tcg_out_shli64(s, r0, r0, CPU_TLB_ENTRY_BITS); |
| |
| tcg_out32(s, ADD | TAB(r0, r0, TCG_AREG0)); |
| tcg_out32(s, LD_ADDR | TAI(r1, r0, offset)); |
| |
| if (!s_bits) { |
| tcg_out_rld (s, RLDICR, r2, addr_reg, 0, 63 - TARGET_PAGE_BITS); |
| } |
| else { |
| tcg_out_rld (s, RLDICL, r2, addr_reg, |
| 64 - TARGET_PAGE_BITS, |
| TARGET_PAGE_BITS - s_bits); |
| tcg_out_rld (s, RLDICL, r2, r2, TARGET_PAGE_BITS, 0); |
| } |
| #endif |
| } |
| #endif |
| |
| static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc) |
| { |
| TCGReg addr_reg, data_reg, r0, r1, rbase; |
| int bswap; |
| #ifdef CONFIG_SOFTMMU |
| TCGReg r2, ir; |
| int mem_index, s_bits; |
| void *label1_ptr, *label2_ptr; |
| #endif |
| |
| data_reg = *args++; |
| addr_reg = *args++; |
| |
| #ifdef CONFIG_SOFTMMU |
| mem_index = *args; |
| s_bits = opc & 3; |
| |
| r0 = 3; |
| r1 = 4; |
| r2 = 0; |
| rbase = 0; |
| |
| tcg_out_tlb_read (s, r0, r1, r2, addr_reg, s_bits, |
| offsetof (CPUArchState, tlb_table[mem_index][0].addr_read)); |
| |
| tcg_out32 (s, CMP | BF (7) | RA (r2) | RB (r1) | CMP_L); |
| |
| label1_ptr = s->code_ptr; |
| #ifdef FAST_PATH |
| tcg_out32 (s, BC | BI (7, CR_EQ) | BO_COND_TRUE); |
| #endif |
| |
| /* slow path */ |
| ir = 3; |
| tcg_out_mov (s, TCG_TYPE_I64, ir++, TCG_AREG0); |
| tcg_out_mov (s, TCG_TYPE_I64, ir++, addr_reg); |
| tcg_out_movi (s, TCG_TYPE_I64, ir++, mem_index); |
| |
| 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 2|4: |
| tcg_out32 (s, EXTSW | RA (data_reg) | RS (3)); |
| break; |
| case 0: |
| case 1: |
| case 2: |
| case 3: |
| if (data_reg != 3) |
| tcg_out_mov (s, TCG_TYPE_I64, data_reg, 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, LD | TAI(r0, r0, |
| offsetof(CPUTLBEntry, addend) |
| - offsetof(CPUTLBEntry, addr_read))); |
| /* r0 = env->tlb_table[mem_index][index].addend */ |
| tcg_out32(s, ADD | TAB(r0, r0, addr_reg)); |
| /* r0 = env->tlb_table[mem_index][index].addend + addr */ |
| |
| #else /* !CONFIG_SOFTMMU */ |
| #if TARGET_LONG_BITS == 32 |
| tcg_out_ext32u(s, addr_reg, addr_reg); |
| #endif |
| 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 2|4: |
| if (bswap) { |
| tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0)); |
| tcg_out32 (s, EXTSW | RA (data_reg) | RS (data_reg)); |
| } |
| else tcg_out32 (s, LWAX | TAB (data_reg, rbase, r0)); |
| break; |
| case 3: |
| #ifdef CONFIG_USE_GUEST_BASE |
| if (bswap) { |
| tcg_out32(s, ADDI | TAI(r1, r0, 4)); |
| tcg_out32 (s, LWBRX | TAB (data_reg, rbase, r0)); |
| tcg_out32 (s, LWBRX | TAB ( r1, rbase, r1)); |
| tcg_out_rld (s, RLDIMI, data_reg, r1, 32, 0); |
| } |
| else tcg_out32 (s, LDX | TAB (data_reg, rbase, r0)); |
| #else |
| if (bswap) { |
| tcg_out_movi32 (s, 0, 4); |
| tcg_out32 (s, LWBRX | RT (data_reg) | RB (r0)); |
| tcg_out32 (s, LWBRX | RT ( r1) | RA (r0)); |
| tcg_out_rld (s, RLDIMI, data_reg, r1, 32, 0); |
| } |
| else tcg_out32 (s, LD | RT (data_reg) | RA (r0)); |
| #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) |
| { |
| TCGReg addr_reg, r0, r1, rbase, data_reg; |
| int bswap; |
| #ifdef CONFIG_SOFTMMU |
| TCGReg r2, ir; |
| int mem_index; |
| void *label1_ptr, *label2_ptr; |
| #endif |
| |
| data_reg = *args++; |
| addr_reg = *args++; |
| |
| #ifdef CONFIG_SOFTMMU |
| mem_index = *args; |
| |
| r0 = 3; |
| r1 = 4; |
| r2 = 0; |
| rbase = 0; |
| |
| tcg_out_tlb_read (s, r0, r1, r2, addr_reg, opc, |
| offsetof (CPUArchState, tlb_table[mem_index][0].addr_write)); |
| |
| tcg_out32 (s, CMP | BF (7) | RA (r2) | RB (r1) | CMP_L); |
| |
| label1_ptr = s->code_ptr; |
| #ifdef FAST_PATH |
| tcg_out32 (s, BC | BI (7, CR_EQ) | BO_COND_TRUE); |
| #endif |
| |
| /* slow path */ |
| ir = 3; |
| tcg_out_mov (s, TCG_TYPE_I64, ir++, TCG_AREG0); |
| tcg_out_mov (s, TCG_TYPE_I64, ir++, addr_reg); |
| tcg_out_rld (s, RLDICL, ir++, data_reg, 0, 64 - (1 << (3 + opc))); |
| tcg_out_movi (s, TCG_TYPE_I64, 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, (LD |
| | RT (r0) |
| | RA (r0) |
| | (offsetof (CPUTLBEntry, addend) |
| - offsetof (CPUTLBEntry, addr_write)) |
| )); |
| /* r0 = env->tlb_table[mem_index][index].addend */ |
| tcg_out32(s, ADD | TAB(r0, r0, addr_reg)); |
| /* r0 = env->tlb_table[mem_index][index].addend + addr */ |
| |
| #else /* !CONFIG_SOFTMMU */ |
| #if TARGET_LONG_BITS == 32 |
| tcg_out_ext32u(s, addr_reg, addr_reg); |
| #endif |
| r1 = 3; |
| r0 = addr_reg; |
| 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, STWBRX | SAB (data_reg, rbase, r0)); |
| tcg_out32(s, ADDI | TAI(r1, r0, 4)); |
| tcg_out_shri64(s, 0, data_reg, 32); |
| tcg_out32 (s, STWBRX | SAB (0, rbase, r1)); |
| } |
| else tcg_out32 (s, STDX | SAB (data_reg, rbase, r0)); |
| 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; |
| #ifndef __APPLE__ |
| uint64_t addr; |
| #endif |
| |
| frame_size = 0 |
| + 8 /* back chain */ |
| + 8 /* CR */ |
| + 8 /* LR */ |
| + 8 /* compiler doubleword */ |
| + 8 /* link editor doubleword */ |
| + 8 /* TOC save area */ |
| + TCG_STATIC_CALL_ARGS_SIZE |
| + ARRAY_SIZE (tcg_target_callee_save_regs) * 8 |
| + CPU_TEMP_BUF_NLONGS * sizeof(long) |
| ; |
| frame_size = (frame_size + 15) & ~15; |
| |
| tcg_set_frame (s, TCG_REG_CALL_STACK, frame_size |
| - CPU_TEMP_BUF_NLONGS * sizeof (long), |
| CPU_TEMP_BUF_NLONGS * sizeof (long)); |
| |
| #ifndef __APPLE__ |
| /* First emit adhoc function descriptor */ |
| addr = (uint64_t) s->code_ptr + 24; |
| tcg_out32 (s, addr >> 32); tcg_out32 (s, addr); /* entry point */ |
| s->code_ptr += 16; /* skip TOC and environment pointer */ |
| #endif |
| |
| /* Prologue */ |
| tcg_out32 (s, MFSPR | RT (0) | LR); |
| tcg_out32 (s, STDU | RS (1) | RA (1) | (-frame_size & 0xffff)); |
| for (i = 0; i < ARRAY_SIZE (tcg_target_callee_save_regs); ++i) |
| tcg_out32 (s, (STD |
| | RS (tcg_target_callee_save_regs[i]) |
| | RA (1) |
| | (i * 8 + 48 + TCG_STATIC_CALL_ARGS_SIZE) |
| ) |
| ); |
| tcg_out32 (s, STD | RS (0) | RA (1) | (frame_size + 16)); |
| |
| #ifdef CONFIG_USE_GUEST_BASE |
| if (GUEST_BASE) { |
| tcg_out_movi (s, TCG_TYPE_I64, TCG_GUEST_BASE_REG, GUEST_BASE); |
| tcg_regset_set_reg (s->reserved_regs, TCG_GUEST_BASE_REG); |
| } |
| #endif |
| |
| tcg_out_mov (s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); |
| tcg_out32 (s, MTSPR | RS (tcg_target_call_iarg_regs[1]) | CTR); |
| tcg_out32 (s, BCCTR | BO_ALWAYS); |
| |
| /* Epilogue */ |
| tb_ret_addr = s->code_ptr; |
| |
| for (i = 0; i < ARRAY_SIZE (tcg_target_callee_save_regs); ++i) |
| tcg_out32 (s, (LD |
| | RT (tcg_target_callee_save_regs[i]) |
| | RA (1) |
| | (i * 8 + 48 + TCG_STATIC_CALL_ARGS_SIZE) |
| ) |
| ); |
| tcg_out32(s, LD | TAI(0, 1, frame_size + 16)); |
| tcg_out32(s, MTSPR | RS(0) | LR); |
| tcg_out32(s, ADDI | TAI(1, 1, frame_size)); |
| tcg_out32(s, BCLR | BO_ALWAYS); |
| } |
| |
| static void tcg_out_ld (TCGContext *s, TCGType type, TCGReg ret, TCGReg arg1, |
| tcg_target_long arg2) |
| { |
| if (type == TCG_TYPE_I32) |
| tcg_out_ldst (s, ret, arg1, arg2, LWZ, LWZX); |
| else |
| tcg_out_ldsta (s, ret, arg1, arg2, LD, LDX); |
| } |
| |
| static void tcg_out_st (TCGContext *s, TCGType type, TCGReg arg, TCGReg arg1, |
| tcg_target_long arg2) |
| { |
| if (type == TCG_TYPE_I32) |
| tcg_out_ldst (s, arg, arg1, arg2, STW, STWX); |
| else |
| tcg_out_ldsta (s, arg, arg1, arg2, STD, STDX); |
| } |
| |
| static void tcg_out_cmp (TCGContext *s, int cond, TCGArg arg1, TCGArg arg2, |
| int const_arg2, int cr, int arch64) |
| { |
| 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) | (arch64 << 21); |
| |
| if (imm) |
| tcg_out32 (s, op | RA (arg1) | (arg2 & 0xffff)); |
| else { |
| if (const_arg2) { |
| tcg_out_movi (s, TCG_TYPE_I64, 0, arg2); |
| tcg_out32 (s, op | RA (arg1) | RB (0)); |
| } |
| else |
| tcg_out32 (s, op | RA (arg1) | RB (arg2)); |
| } |
| |
| } |
| |
| static void tcg_out_setcond (TCGContext *s, TCGType type, 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 | SAI(arg1, 0, arg2)); |
| } |
| else { |
| tcg_out_movi (s, type, 0, arg2); |
| tcg_out32 (s, XOR | SAB (arg1, 0, 0)); |
| } |
| } |
| } |
| else { |
| arg = 0; |
| tcg_out32 (s, XOR | SAB (arg1, 0, arg2)); |
| } |
| |
| if (type == TCG_TYPE_I64) { |
| tcg_out32 (s, CNTLZD | RS (arg) | RA (0)); |
| tcg_out_rld (s, RLDICL, arg0, 0, 58, 6); |
| } |
| else { |
| tcg_out32 (s, CNTLZW | RS (arg) | RA (0)); |
| tcg_out_rlw(s, RLWINM, arg0, 0, 27, 5, 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 | SAI(arg1, 0, arg2)); |
| } else { |
| tcg_out_movi (s, type, 0, arg2); |
| tcg_out32 (s, XOR | SAB (arg1, 0, 0)); |
| } |
| } |
| } |
| else { |
| arg = 0; |
| tcg_out32 (s, XOR | SAB (arg1, 0, arg2)); |
| } |
| |
| /* Make sure and discard the high 32-bits of the input. */ |
| if (type == TCG_TYPE_I32) { |
| tcg_out32(s, EXTSW | RA(TCG_REG_R0) | RS(arg)); |
| arg = TCG_REG_R0; |
| } |
| |
| if (arg == arg1 && arg1 == arg0) { |
| tcg_out32(s, ADDIC | TAI(0, arg, -1)); |
| tcg_out32(s, SUBFE | TAB(arg0, 0, arg)); |
| } |
| else { |
| tcg_out32(s, ADDIC | TAI(arg0, arg, -1)); |
| 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, type == TCG_TYPE_I64); |
| if (crop) tcg_out32 (s, crop); |
| tcg_out32 (s, MFCR | RT (0)); |
| tcg_out_rlw(s, RLWINM, arg0, 0, sh, 31, 31); |
| break; |
| |
| default: |
| tcg_abort (); |
| } |
| } |
| |
| 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_brcond (TCGContext *s, TCGCond cond, |
| TCGArg arg1, TCGArg arg2, int const_arg2, |
| int label_index, int arch64) |
| { |
| tcg_out_cmp (s, cond, arg1, arg2, const_arg2, 7, arch64); |
| tcg_out_bc (s, tcg_to_bc[cond], label_index); |
| } |
| |
| void ppc_tb_set_jmp_target (unsigned long jmp_addr, unsigned long addr) |
| { |
| TCGContext s; |
| unsigned long patch_size; |
| |
| s.code_ptr = (uint8_t *) jmp_addr; |
| tcg_out_b (&s, 0, addr); |
| patch_size = s.code_ptr - (uint8_t *) jmp_addr; |
| 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) |
| { |
| TCGArg a0, a1, a2; |
| int c; |
| |
| switch (opc) { |
| case INDEX_op_exit_tb: |
| tcg_out_movi (s, TCG_TYPE_I64, 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 += 28; |
| } |
| 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_movi_i32: |
| tcg_out_movi (s, TCG_TYPE_I32, args[0], args[1]); |
| break; |
| case INDEX_op_movi_i64: |
| tcg_out_movi (s, TCG_TYPE_I64, args[0], args[1]); |
| break; |
| case INDEX_op_ld8u_i32: |
| case INDEX_op_ld8u_i64: |
| tcg_out_ldst (s, args[0], args[1], args[2], LBZ, LBZX); |
| break; |
| case INDEX_op_ld8s_i32: |
| case INDEX_op_ld8s_i64: |
| 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: |
| case INDEX_op_ld16u_i64: |
| tcg_out_ldst (s, args[0], args[1], args[2], LHZ, LHZX); |
| break; |
| case INDEX_op_ld16s_i32: |
| case INDEX_op_ld16s_i64: |
| tcg_out_ldst (s, args[0], args[1], args[2], LHA, LHAX); |
| break; |
| case INDEX_op_ld_i32: |
| case INDEX_op_ld32u_i64: |
| tcg_out_ldst (s, args[0], args[1], args[2], LWZ, LWZX); |
| break; |
| case INDEX_op_ld32s_i64: |
| tcg_out_ldsta (s, args[0], args[1], args[2], LWA, LWAX); |
| break; |
| case INDEX_op_ld_i64: |
| tcg_out_ldsta (s, args[0], args[1], args[2], LD, LDX); |
| break; |
| case INDEX_op_st8_i32: |
| case INDEX_op_st8_i64: |
| tcg_out_ldst (s, args[0], args[1], args[2], STB, STBX); |
| break; |
| case INDEX_op_st16_i32: |
| case INDEX_op_st16_i64: |
| tcg_out_ldst (s, args[0], args[1], args[2], STH, STHX); |
| break; |
| case INDEX_op_st_i32: |
| case INDEX_op_st32_i64: |
| tcg_out_ldst (s, args[0], args[1], args[2], STW, STWX); |
| break; |
| case INDEX_op_st_i64: |
| tcg_out_ldsta (s, args[0], args[1], args[2], STD, STDX); |
| break; |
| |
| case INDEX_op_add_i32: |
| a0 = args[0], a1 = args[1], a2 = args[2]; |
| if (const_args[2]) { |
| int32_t l, h; |
| do_addi_32: |
| l = (int16_t)a2; |
| h = a2 - l; |
| if (h) { |
| tcg_out32(s, ADDIS | TAI(a0, a1, h >> 16)); |
| a1 = a0; |
| } |
| if (l || a0 != a1) { |
| tcg_out32(s, ADDI | TAI(a0, a1, l)); |
| } |
| } else { |
| tcg_out32(s, ADD | TAB(a0, a1, a2)); |
| } |
| break; |
| case INDEX_op_sub_i32: |
| a0 = args[0], a1 = args[1], a2 = args[2]; |
| if (const_args[1]) { |
| if (const_args[2]) { |
| tcg_out_movi(s, TCG_TYPE_I32, a0, a1 - a2); |
| } else { |
| tcg_out32(s, SUBFIC | TAI(a0, a2, a1)); |
| } |
| } else if (const_args[2]) { |
| a2 = -a2; |
| goto do_addi_32; |
| } else { |
| tcg_out32(s, SUBF | TAB(a0, a2, a1)); |
| } |
| break; |
| |
| case INDEX_op_and_i32: |
| if (const_args[2]) { |
| tcg_out_andi32(s, args[0], args[1], args[2]); |
| } else { |
| tcg_out32(s, AND | SAB(args[1], args[0], args[2])); |
| } |
| break; |
| case INDEX_op_and_i64: |
| if (const_args[2]) { |
| tcg_out_andi64(s, args[0], args[1], args[2]); |
| } else { |
| tcg_out32(s, AND | SAB(args[1], args[0], args[2])); |
| } |
| break; |
| case INDEX_op_or_i64: |
| case INDEX_op_or_i32: |
| a0 = args[0], a1 = args[1], a2 = args[2]; |
| if (const_args[2]) { |
| tcg_out_ori32(s, a0, a1, a2); |
| } else { |
| tcg_out32(s, OR | SAB(a1, a0, a2)); |
| } |
| break; |
| case INDEX_op_xor_i64: |
| case INDEX_op_xor_i32: |
| a0 = args[0], a1 = args[1], a2 = args[2]; |
| if (const_args[2]) { |
| tcg_out_xori32(s, a0, a1, a2); |
| } else { |
| tcg_out32(s, XOR | SAB(a1, a0, a2)); |
| } |
| 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_shl_i32: |
| if (const_args[2]) { |
| tcg_out_rlw(s, RLWINM, args[0], args[1], args[2], 0, 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_out_rlw(s, RLWINM, args[0], args[1], 32 - args[2], args[2], 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_brcond_i32: |
| tcg_out_brcond (s, args[2], args[0], args[1], const_args[1], args[3], 0); |
| break; |
| |
| case INDEX_op_brcond_i64: |
| tcg_out_brcond (s, args[2], args[0], args[1], const_args[1], args[3], 1); |
| break; |
| |
| case INDEX_op_neg_i32: |
| case INDEX_op_neg_i64: |
| tcg_out32 (s, NEG | RT (args[0]) | RA (args[1])); |
| break; |
| |
| case INDEX_op_not_i32: |
| case INDEX_op_not_i64: |
| tcg_out32 (s, NOR | SAB (args[1], args[0], args[1])); |
| break; |
| |
| case INDEX_op_add_i64: |
| a0 = args[0], a1 = args[1], a2 = args[2]; |
| if (const_args[2]) { |
| int32_t l0, h1, h2; |
| do_addi_64: |
| /* We can always split any 32-bit signed constant into 3 pieces. |
| Note the positive 0x80000000 coming from the sub_i64 path, |
| handled with the same code we need for eg 0x7fff8000. */ |
| assert(a2 == (int32_t)a2 || a2 == 0x80000000); |
| l0 = (int16_t)a2; |
| h1 = a2 - l0; |
| h2 = 0; |
| if (h1 < 0 && (int64_t)a2 > 0) { |
| h2 = 0x40000000; |
| h1 = a2 - h2 - l0; |
| } |
| assert((TCGArg)h2 + h1 + l0 == a2); |
| |
| if (h2) { |
| tcg_out32(s, ADDIS | TAI(a0, a1, h2 >> 16)); |
| a1 = a0; |
| } |
| if (h1) { |
| tcg_out32(s, ADDIS | TAI(a0, a1, h1 >> 16)); |
| a1 = a0; |
| } |
| if (l0 || a0 != a1) { |
| tcg_out32(s, ADDI | TAI(a0, a1, l0)); |
| } |
| } else { |
| tcg_out32(s, ADD | TAB(a0, a1, a2)); |
| } |
| break; |
| case INDEX_op_sub_i64: |
| a0 = args[0], a1 = args[1], a2 = args[2]; |
| if (const_args[1]) { |
| if (const_args[2]) { |
| tcg_out_movi(s, TCG_TYPE_I64, a0, a1 - a2); |
| } else { |
| tcg_out32(s, SUBFIC | TAI(a0, a2, a1)); |
| } |
| } else if (const_args[2]) { |
| a2 = -a2; |
| goto do_addi_64; |
| } else { |
| tcg_out32(s, SUBF | TAB(a0, a2, a1)); |
| } |
| break; |
| |
| case INDEX_op_shl_i64: |
| if (const_args[2]) |
| tcg_out_shli64(s, args[0], args[1], args[2]); |
| else |
| tcg_out32 (s, SLD | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_shr_i64: |
| if (const_args[2]) |
| tcg_out_shri64(s, args[0], args[1], args[2]); |
| else |
| tcg_out32 (s, SRD | SAB (args[1], args[0], args[2])); |
| break; |
| case INDEX_op_sar_i64: |
| if (const_args[2]) { |
| int sh = SH (args[2] & 0x1f) | (((args[2] >> 5) & 1) << 1); |
| tcg_out32 (s, SRADI | RA (args[0]) | RS (args[1]) | sh); |
| } |
| else |
| tcg_out32 (s, SRAD | SAB (args[1], args[0], args[2])); |
| break; |
| |
| case INDEX_op_mul_i64: |
| tcg_out32 (s, MULLD | TAB (args[0], args[1], args[2])); |
| break; |
| case INDEX_op_div_i64: |
| tcg_out32 (s, DIVD | TAB (args[0], args[1], args[2])); |
| break; |
| case INDEX_op_divu_i64: |
| tcg_out32 (s, DIVDU | TAB (args[0], args[1], args[2])); |
| break; |
| case INDEX_op_rem_i64: |
| tcg_out32 (s, DIVD | TAB (0, args[1], args[2])); |
| tcg_out32 (s, MULLD | TAB (0, 0, args[2])); |
| tcg_out32 (s, SUBF | TAB (args[0], 0, args[1])); |
| break; |
| case INDEX_op_remu_i64: |
| tcg_out32 (s, DIVDU | TAB (0, args[1], args[2])); |
| tcg_out32 (s, MULLD | TAB (0, 0, args[2])); |
| tcg_out32 (s, SUBF | TAB (args[0], 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: |
| case INDEX_op_qemu_ld32u: |
| tcg_out_qemu_ld (s, args, 2); |
| break; |
| case INDEX_op_qemu_ld32s: |
| tcg_out_qemu_ld (s, args, 2 | 4); |
| 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: |
| case INDEX_op_ext8s_i64: |
| c = EXTSB; |
| goto gen_ext; |
| case INDEX_op_ext16s_i32: |
| case INDEX_op_ext16s_i64: |
| c = EXTSH; |
| goto gen_ext; |
| case INDEX_op_ext32s_i64: |
| c = EXTSW; |
| goto gen_ext; |
| gen_ext: |
| tcg_out32 (s, c | RS (args[1]) | RA (args[0])); |
| break; |
| |
| case INDEX_op_setcond_i32: |
| tcg_out_setcond (s, TCG_TYPE_I32, args[3], args[0], args[1], args[2], |
| const_args[2]); |
| break; |
| case INDEX_op_setcond_i64: |
| tcg_out_setcond (s, TCG_TYPE_I64, args[3], args[0], args[1], args[2], |
| const_args[2]); |
| break; |
| |
| default: |
| tcg_dump_ops (s); |
| tcg_abort (); |
| } |
| } |
| |
| static const TCGTargetOpDef ppc_op_defs[] = { |
| { INDEX_op_exit_tb, { } }, |
| { INDEX_op_goto_tb, { } }, |
| { INDEX_op_call, { "ri" } }, |
| { INDEX_op_br, { } }, |
| |
| { INDEX_op_mov_i32, { "r", "r" } }, |
| { INDEX_op_mov_i64, { "r", "r" } }, |
| { INDEX_op_movi_i32, { "r" } }, |
| { INDEX_op_movi_i64, { "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_ld_i64, { "r", "r" } }, |
| { INDEX_op_st8_i32, { "r", "r" } }, |
| { INDEX_op_st8_i64, { "r", "r" } }, |
| { INDEX_op_st16_i32, { "r", "r" } }, |
| { INDEX_op_st16_i64, { "r", "r" } }, |
| { INDEX_op_st_i32, { "r", "r" } }, |
| { INDEX_op_st_i64, { "r", "r" } }, |
| { INDEX_op_st32_i64, { "r", "r" } }, |
| |
| { INDEX_op_ld8u_i64, { "r", "r" } }, |
| { INDEX_op_ld8s_i64, { "r", "r" } }, |
| { INDEX_op_ld16u_i64, { "r", "r" } }, |
| { INDEX_op_ld16s_i64, { "r", "r" } }, |
| { INDEX_op_ld32u_i64, { "r", "r" } }, |
| { INDEX_op_ld32s_i64, { "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_sub_i32, { "r", "rI", "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_brcond_i32, { "r", "ri" } }, |
| { INDEX_op_brcond_i64, { "r", "ri" } }, |
| |
| { INDEX_op_neg_i32, { "r", "r" } }, |
| { INDEX_op_not_i32, { "r", "r" } }, |
| |
| { INDEX_op_add_i64, { "r", "r", "rT" } }, |
| { INDEX_op_sub_i64, { "r", "rI", "rT" } }, |
| { INDEX_op_and_i64, { "r", "r", "rU" } }, |
| { INDEX_op_or_i64, { "r", "r", "rU" } }, |
| { INDEX_op_xor_i64, { "r", "r", "rU" } }, |
| |
| { INDEX_op_shl_i64, { "r", "r", "ri" } }, |
| { INDEX_op_shr_i64, { "r", "r", "ri" } }, |
| { INDEX_op_sar_i64, { "r", "r", "ri" } }, |
| |
| { INDEX_op_mul_i64, { "r", "r", "r" } }, |
| { INDEX_op_div_i64, { "r", "r", "r" } }, |
| { INDEX_op_divu_i64, { "r", "r", "r" } }, |
| { INDEX_op_rem_i64, { "r", "r", "r" } }, |
| { INDEX_op_remu_i64, { "r", "r", "r" } }, |
| |
| { INDEX_op_neg_i64, { "r", "r" } }, |
| { INDEX_op_not_i64, { "r", "r" } }, |
| |
| { 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_ld32u, { "r", "L" } }, |
| { INDEX_op_qemu_ld32s, { "r", "L" } }, |
| { INDEX_op_qemu_ld64, { "r", "L" } }, |
| |
| { INDEX_op_qemu_st8, { "S", "S" } }, |
| { INDEX_op_qemu_st16, { "S", "S" } }, |
| { INDEX_op_qemu_st32, { "S", "S" } }, |
| { INDEX_op_qemu_st64, { "S", "S" } }, |
| |
| { INDEX_op_ext8s_i32, { "r", "r" } }, |
| { INDEX_op_ext16s_i32, { "r", "r" } }, |
| { INDEX_op_ext8s_i64, { "r", "r" } }, |
| { INDEX_op_ext16s_i64, { "r", "r" } }, |
| { INDEX_op_ext32s_i64, { "r", "r" } }, |
| |
| { INDEX_op_setcond_i32, { "r", "r", "ri" } }, |
| { INDEX_op_setcond_i64, { "r", "r", "ri" } }, |
| |
| { -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_available_regs[TCG_TYPE_I64], 0, 0xffffffff); |
| tcg_regset_set32 (tcg_target_call_clobber_regs, 0, |
| (1 << TCG_REG_R0) | |
| #ifdef __APPLE__ |
| (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 __APPLE__ |
| tcg_regset_set_reg (s->reserved_regs, TCG_REG_R2); |
| #endif |
| tcg_regset_set_reg (s->reserved_regs, TCG_REG_R13); |
| |
| tcg_add_target_add_op_defs (ppc_op_defs); |
| } |
