/* * 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 __APPLE__ #define LINKAGE_AREA_SIZE 24 #define BACK_CHAIN_OFFSET 8 #else #define LINKAGE_AREA_SIZE 8 #define BACK_CHAIN_OFFSET 4 #endif #define FAST_PATH #if TARGET_PHYS_ADDR_BITS <= 32 #define ADDEND_OFFSET 0 #else #define ADDEND_OFFSET 4 #endif #ifndef NDEBUG static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { "r0", "r1", "rp", "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_R13, TCG_REG_R0, TCG_REG_R1, TCG_REG_R2, 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 __APPLE__ TCG_REG_R11, 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_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 sizeof (tcg_target_call_iarg_regs) / sizeof (tcg_target_call_iarg_regs[0]); } /* 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 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 LWZU OPCD(33) #define STWU OPCD(37) #define RLWINM OPCD(21) #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 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 LBZX XO31( 87) #define LHZX XO31(276) #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 LMW OPCD(46) #define STMW OPCD(47) #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, 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); } } #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, 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; 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, 3, addr_reg); tcg_out_movi (s, TCG_TYPE_I32, 4, mem_index); #else tcg_out_mov (s, 3, addr_reg2); tcg_out_mov (s, 4, addr_reg); tcg_out_movi (s, TCG_TYPE_I32, 5, mem_index); #endif tcg_out_b (s, LK, (tcg_target_long) qemu_ld_helpers[s_bits]); 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, data_reg, 3); break; case 3: if (data_reg == 3) { if (data_reg2 == 4) { tcg_out_mov (s, 0, 4); tcg_out_mov (s, 4, 3); tcg_out_mov (s, 3, 0); } else { tcg_out_mov (s, data_reg2, 3); tcg_out_mov (s, 3, 4); } } else { if (data_reg != 4) tcg_out_mov (s, data_reg, 4); if (data_reg2 != 3) tcg_out_mov (s, 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) | (ADDEND_OFFSET + 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; #endif #ifdef TARGET_WORDS_BIGENDIAN bswap = 0; #else bswap = 1; #endif switch (opc) { default: case 0: tcg_out32 (s, LBZ | RT (data_reg) | RA (r0)); break; case 0|4: tcg_out32 (s, LBZ | RT (data_reg) | RA (r0)); tcg_out32 (s, EXTSB | RA (data_reg) | RS (data_reg)); break; case 1: if (bswap) tcg_out32 (s, LHBRX | RT (data_reg) | RB (r0)); else tcg_out32 (s, LHZ | RT (data_reg) | RA (r0)); break; case 1|4: if (bswap) { tcg_out32 (s, LHBRX | RT (data_reg) | RB (r0)); tcg_out32 (s, EXTSH | RA (data_reg) | RS (data_reg)); } else tcg_out32 (s, LHA | RT (data_reg) | RA (r0)); break; case 2: if (bswap) tcg_out32 (s, LWBRX | RT (data_reg) | RB (r0)); else tcg_out32 (s, LWZ | RT (data_reg)| RA (r0)); break; case 3: if (bswap) { tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4); tcg_out32 (s, LWBRX | RT (data_reg) | RB (r0)); tcg_out32 (s, LWBRX | RT (data_reg2) | RB (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, data_reg2, 0); } else { tcg_out32 (s, LWZ | RT (data_reg2) | RA (r0)); tcg_out32 (s, LWZ | RT (data_reg) | RA (r0) | 4); } } 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; #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; 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, 3, addr_reg); ir = 4; #else tcg_out_mov (s, 3, addr_reg2); tcg_out_mov (s, 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, ir, data_reg); break; case 3: #ifdef TCG_TARGET_CALL_ALIGN_ARGS ir = 5; #endif tcg_out_mov (s, ir++, data_reg2); tcg_out_mov (s, ir, data_reg); break; } ir++; tcg_out_movi (s, TCG_TYPE_I32, ir, mem_index); tcg_out_b (s, LK, (tcg_target_long) qemu_st_helpers[opc]); 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) | (ADDEND_OFFSET + 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 */ r1 = 3; r0 = addr_reg; #endif #ifdef TARGET_WORDS_BIGENDIAN bswap = 0; #else bswap = 1; #endif switch (opc) { case 0: tcg_out32 (s, STB | RS (data_reg) | RA (r0)); break; case 1: if (bswap) tcg_out32 (s, STHBRX | RS (data_reg) | RA (0) | RB (r0)); else tcg_out32 (s, STH | RS (data_reg) | RA (r0)); break; case 2: if (bswap) tcg_out32 (s, STWBRX | RS (data_reg) | RA (0) | RB (r0)); else tcg_out32 (s, STW | RS (data_reg) | RA (r0)); break; case 3: if (bswap) { tcg_out32 (s, ADDI | RT (r1) | RA (r0) | 4); tcg_out32 (s, STWBRX | RS (data_reg) | RA (0) | RB (r0)); tcg_out32 (s, STWBRX | RS (data_reg2) | RA (0) | RB (r1)); } else { tcg_out32 (s, STW | RS (data_reg2) | RA (r0)); tcg_out32 (s, STW | RS (data_reg) | RA (r0) | 4); } break; } #ifdef CONFIG_SOFTMMU reloc_pc24 (label2_ptr, (tcg_target_long) s->code_ptr); #endif } 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; 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 + BACK_CHAIN_OFFSET)); 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 + BACK_CHAIN_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_brcond (TCGContext *s, int 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) { int cond = args[4], label_index = args[5], 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_COND_EQ, args[1], args[3], const_args[3], 6); tcg_out_cmp (s, cond, args[0], args[2], const_args[2], 7); tcg_out32 (s, op | BT (7, CR_EQ) | BA (6, 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(); } tcg_out_bc (s, (BC | BI (7, CR_EQ) | BO_COND_TRUE), label_index); } 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, int 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: if (const_args[0]) { tcg_out_b (s, LK, args[0]); } else { tcg_out32 (s, MTSPR | RS (args[0]) | LR); tcg_out32 (s, BCLR | BO_ALWAYS | LK); } 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]) { if ((args[2] & 0xffff) == args[2]) tcg_out32 (s, ANDI | RS (args[1]) | RA (args[0]) | args[2]); else if ((args[2] & 0xffff0000) == args[2]) tcg_out32 (s, ANDIS | RS (args[1]) | RA (args[0]) | ((args[2] >> 16) & 0xffff)); else { tcg_out_movi (s, TCG_TYPE_I32, 0, args[2]); 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_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, 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_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, 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, 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_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_ld32u: 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_ext16s_i32: tcg_out32 (s, EXTSH | RS (args[1]) | RA (args[0])); 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_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" } }, #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_ld32u, { "r", "L" } }, { INDEX_op_qemu_ld32s, { "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_ld32u, { "r", "L", "L" } }, { INDEX_op_qemu_ld32s, { "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_ext16s_i32, { "r", "r" } }, { -1 }, }; 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 __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_add_target_add_op_defs(ppc_op_defs); }