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author | Nathan Froyd <froydnj@codesourcery.com> | 2010-06-08 13:29:59 -0700 |
---|---|---|
committer | Aurelien Jarno <aurelien@aurel32.net> | 2010-06-09 16:10:50 +0200 |
commit | 3c824109da076d2a1df4b798f9df81b385131f92 (patch) | |
tree | 504d7c603ec17658f473702dd2034e0b8bba0e49 /target-mips | |
parent | 620e48f66350991918dd78e9a686a9b159fec111 (diff) | |
download | qemu-3c824109da076d2a1df4b798f9df81b385131f92.zip qemu-3c824109da076d2a1df4b798f9df81b385131f92.tar.gz qemu-3c824109da076d2a1df4b798f9df81b385131f92.tar.bz2 |
target-mips: microMIPS ASE support
Add instruction decoding for the microMIPS ASE. All we do is decode and
then forward to the existing gen_* routines.
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-mips')
-rw-r--r-- | target-mips/helper.h | 9 | ||||
-rw-r--r-- | target-mips/mips-defs.h | 1 | ||||
-rw-r--r-- | target-mips/op_helper.c | 136 | ||||
-rw-r--r-- | target-mips/translate.c | 2390 |
4 files changed, 2531 insertions, 5 deletions
diff --git a/target-mips/helper.h b/target-mips/helper.h index ab47b1a..a6ba75d 100644 --- a/target-mips/helper.h +++ b/target-mips/helper.h @@ -160,6 +160,15 @@ DEF_HELPER_1(emt, tl, tl) DEF_HELPER_1(dvpe, tl, tl) DEF_HELPER_1(evpe, tl, tl) #endif /* !CONFIG_USER_ONLY */ + +/* microMIPS functions */ +DEF_HELPER_3(lwm, void, tl, tl, i32); +DEF_HELPER_3(swm, void, tl, tl, i32); +#ifdef TARGET_MIPS64 +DEF_HELPER_3(ldm, void, tl, tl, i32); +DEF_HELPER_3(sdm, void, tl, tl, i32); +#endif + DEF_HELPER_2(fork, void, tl, tl) DEF_HELPER_1(yield, tl, tl) diff --git a/target-mips/mips-defs.h b/target-mips/mips-defs.h index c57de02..a7f4697 100644 --- a/target-mips/mips-defs.h +++ b/target-mips/mips-defs.h @@ -38,6 +38,7 @@ #define ASE_DSPR2 0x00010000 #define ASE_MT 0x00020000 #define ASE_SMARTMIPS 0x00040000 +#define ASE_MICROMIPS 0x00080000 /* Chip specific instructions. */ #define INSN_VR54XX 0x80000000 diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c index 2bfdd50..d09d6ed54 100644 --- a/target-mips/op_helper.c +++ b/target-mips/op_helper.c @@ -565,6 +565,142 @@ void helper_sdr(target_ulong arg1, target_ulong arg2, int mem_idx) } #endif /* TARGET_MIPS64 */ +static const int multiple_regs[] = { 16, 17, 18, 19, 20, 21, 22, 23, 30 }; + +void helper_lwm (target_ulong addr, target_ulong reglist, uint32_t mem_idx) +{ + target_ulong base_reglist = reglist & 0xf; + target_ulong do_r31 = reglist & 0x10; +#ifdef CONFIG_USER_ONLY +#undef ldfun +#define ldfun ldl_raw +#else + uint32_t (*ldfun)(target_ulong); + + switch (mem_idx) + { + case 0: ldfun = ldl_kernel; break; + case 1: ldfun = ldl_super; break; + default: + case 2: ldfun = ldl_user; break; + } +#endif + + if (base_reglist > 0 && base_reglist <= ARRAY_SIZE (multiple_regs)) { + target_ulong i; + + for (i = 0; i < base_reglist; i++) { + env->active_tc.gpr[multiple_regs[i]] = (target_long) ldfun(addr); + addr += 4; + } + } + + if (do_r31) { + env->active_tc.gpr[31] = (target_long) ldfun(addr); + } +} + +void helper_swm (target_ulong addr, target_ulong reglist, uint32_t mem_idx) +{ + target_ulong base_reglist = reglist & 0xf; + target_ulong do_r31 = reglist & 0x10; +#ifdef CONFIG_USER_ONLY +#undef stfun +#define stfun stl_raw +#else + void (*stfun)(target_ulong, uint32_t); + + switch (mem_idx) + { + case 0: stfun = stl_kernel; break; + case 1: stfun = stl_super; break; + default: + case 2: stfun = stl_user; break; + } +#endif + + if (base_reglist > 0 && base_reglist <= ARRAY_SIZE (multiple_regs)) { + target_ulong i; + + for (i = 0; i < base_reglist; i++) { + stfun(addr, env->active_tc.gpr[multiple_regs[i]]); + addr += 4; + } + } + + if (do_r31) { + stfun(addr, env->active_tc.gpr[31]); + } +} + +#if defined(TARGET_MIPS64) +void helper_ldm (target_ulong addr, target_ulong reglist, uint32_t mem_idx) +{ + target_ulong base_reglist = reglist & 0xf; + target_ulong do_r31 = reglist & 0x10; +#ifdef CONFIG_USER_ONLY +#undef ldfun +#define ldfun ldq_raw +#else + uint64_t (*ldfun)(target_ulong); + + switch (mem_idx) + { + case 0: ldfun = ldq_kernel; break; + case 1: ldfun = ldq_super; break; + default: + case 2: ldfun = ldq_user; break; + } +#endif + + if (base_reglist > 0 && base_reglist <= ARRAY_SIZE (multiple_regs)) { + target_ulong i; + + for (i = 0; i < base_reglist; i++) { + env->active_tc.gpr[multiple_regs[i]] = ldfun(addr); + addr += 8; + } + } + + if (do_r31) { + env->active_tc.gpr[31] = ldfun(addr); + } +} + +void helper_sdm (target_ulong addr, target_ulong reglist, uint32_t mem_idx) +{ + target_ulong base_reglist = reglist & 0xf; + target_ulong do_r31 = reglist & 0x10; +#ifdef CONFIG_USER_ONLY +#undef stfun +#define stfun stq_raw +#else + void (*stfun)(target_ulong, uint64_t); + + switch (mem_idx) + { + case 0: stfun = stq_kernel; break; + case 1: stfun = stq_super; break; + default: + case 2: stfun = stq_user; break; + } +#endif + + if (base_reglist > 0 && base_reglist <= ARRAY_SIZE (multiple_regs)) { + target_ulong i; + + for (i = 0; i < base_reglist; i++) { + stfun(addr, env->active_tc.gpr[multiple_regs[i]]); + addr += 8; + } + } + + if (do_r31) { + stfun(addr, env->active_tc.gpr[31]); + } +} +#endif + #ifndef CONFIG_USER_ONLY /* CP0 helpers */ target_ulong helper_mfc0_mvpcontrol (void) diff --git a/target-mips/translate.c b/target-mips/translate.c index 78783a8..ab8f974 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -4,7 +4,7 @@ * Copyright (c) 2004-2005 Jocelyn Mayer * Copyright (c) 2006 Marius Groeger (FPU operations) * Copyright (c) 2006 Thiemo Seufer (MIPS32R2 support) - * Copyright (c) 2009 CodeSourcery (MIPS16 support) + * Copyright (c) 2009 CodeSourcery (MIPS16 and microMIPS support) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -243,8 +243,10 @@ enum { OPC_BGEZ = (0x01 << 16) | OPC_REGIMM, OPC_BGEZL = (0x03 << 16) | OPC_REGIMM, OPC_BLTZAL = (0x10 << 16) | OPC_REGIMM, + OPC_BLTZALS = OPC_BLTZAL | 0x5, /* microMIPS */ OPC_BLTZALL = (0x12 << 16) | OPC_REGIMM, OPC_BGEZAL = (0x11 << 16) | OPC_REGIMM, + OPC_BGEZALS = OPC_BGEZAL | 0x5, /* microMIPS */ OPC_BGEZALL = (0x13 << 16) | OPC_REGIMM, OPC_TGEI = (0x08 << 16) | OPC_REGIMM, OPC_TGEIU = (0x09 << 16) | OPC_REGIMM, @@ -2449,6 +2451,7 @@ static void gen_compute_branch (DisasContext *ctx, uint32_t opc, break; case OPC_BGEZ: case OPC_BGEZAL: + case OPC_BGEZALS: case OPC_BGEZALL: case OPC_BGEZL: case OPC_BGTZ: @@ -2457,6 +2460,7 @@ static void gen_compute_branch (DisasContext *ctx, uint32_t opc, case OPC_BLEZL: case OPC_BLTZ: case OPC_BLTZAL: + case OPC_BLTZALS: case OPC_BLTZALL: case OPC_BLTZL: /* Compare to zero */ @@ -2506,8 +2510,12 @@ static void gen_compute_branch (DisasContext *ctx, uint32_t opc, ctx->hflags |= MIPS_HFLAG_B; MIPS_DEBUG("balways"); break; + case OPC_BGEZALS: case OPC_BGEZAL: /* 0 >= 0 */ case OPC_BGEZALL: /* 0 >= 0 likely */ + ctx->hflags |= (opc == OPC_BGEZALS + ? MIPS_HFLAG_BDS16 + : MIPS_HFLAG_BDS32); /* Always take and link */ blink = 31; ctx->hflags |= MIPS_HFLAG_B; @@ -2519,10 +2527,18 @@ static void gen_compute_branch (DisasContext *ctx, uint32_t opc, /* Treat as NOP. */ MIPS_DEBUG("bnever (NOP)"); goto out; + case OPC_BLTZALS: case OPC_BLTZAL: /* 0 < 0 */ - tcg_gen_movi_tl(cpu_gpr[31], ctx->pc + 8); + ctx->hflags |= (opc == OPC_BLTZALS + ? MIPS_HFLAG_BDS16 + : MIPS_HFLAG_BDS32); + /* Handle as an unconditional branch to get correct delay + slot checking. */ + blink = 31; + btgt = ctx->pc + (opc == OPC_BLTZALS ? 6 : 8); + ctx->hflags |= MIPS_HFLAG_B; MIPS_DEBUG("bnever and link"); - goto out; + break; case OPC_BLTZALL: /* 0 < 0 likely */ tcg_gen_movi_tl(cpu_gpr[31], ctx->pc + 8); /* Skip the instruction in the delay slot */ @@ -2604,7 +2620,11 @@ static void gen_compute_branch (DisasContext *ctx, uint32_t opc, tcg_gen_setcondi_tl(TCG_COND_GE, bcond, t0, 0); MIPS_DEBUG("bgezl %s, " TARGET_FMT_lx, regnames[rs], btgt); goto likely; + case OPC_BGEZALS: case OPC_BGEZAL: + ctx->hflags |= (opc == OPC_BGEZALS + ? MIPS_HFLAG_BDS16 + : MIPS_HFLAG_BDS32); tcg_gen_setcondi_tl(TCG_COND_GE, bcond, t0, 0); MIPS_DEBUG("bgezal %s, " TARGET_FMT_lx, regnames[rs], btgt); blink = 31; @@ -2638,7 +2658,11 @@ static void gen_compute_branch (DisasContext *ctx, uint32_t opc, tcg_gen_setcondi_tl(TCG_COND_LT, bcond, t0, 0); MIPS_DEBUG("bltzl %s, " TARGET_FMT_lx, regnames[rs], btgt); goto likely; + case OPC_BLTZALS: case OPC_BLTZAL: + ctx->hflags |= (opc == OPC_BLTZALS + ? MIPS_HFLAG_BDS16 + : MIPS_HFLAG_BDS32); tcg_gen_setcondi_tl(TCG_COND_LT, bcond, t0, 0); blink = 31; MIPS_DEBUG("bltzal %s, " TARGET_FMT_lx, regnames[rs], btgt); @@ -7785,7 +7809,7 @@ static void handle_delay_slot (CPUState *env, DisasContext *ctx, case MIPS_HFLAG_BR: /* unconditional branch to register */ MIPS_DEBUG("branch to register"); - if (env->insn_flags & ASE_MIPS16) { + if (env->insn_flags & (ASE_MIPS16 | ASE_MICROMIPS)) { TCGv t0 = tcg_temp_new(); TCGv_i32 t1 = tcg_temp_new_i32(); @@ -8906,6 +8930,2358 @@ static int decode_mips16_opc (CPUState *env, DisasContext *ctx, return n_bytes; } +/* microMIPS extension to MIPS32 */ + +/* microMIPS32 major opcodes */ + +enum { + POOL32A = 0x00, + POOL16A = 0x01, + LBU16 = 0x02, + MOVE16 = 0x03, + ADDI32 = 0x04, + LBU32 = 0x05, + SB32 = 0x06, + LB32 = 0x07, + + POOL32B = 0x08, + POOL16B = 0x09, + LHU16 = 0x0a, + ANDI16 = 0x0b, + ADDIU32 = 0x0c, + LHU32 = 0x0d, + SH32 = 0x0e, + LH32 = 0x0f, + + POOL32I = 0x10, + POOL16C = 0x11, + LWSP16 = 0x12, + POOL16D = 0x13, + ORI32 = 0x14, + POOL32F = 0x15, + POOL32S = 0x16, + DADDIU32 = 0x17, + + POOL32C = 0x18, + LWGP16 = 0x19, + LW16 = 0x1a, + POOL16E = 0x1b, + XORI32 = 0x1c, + JALS32 = 0x1d, + ADDIUPC = 0x1e, + POOL48A = 0x1f, + + /* 0x20 is reserved */ + RES_20 = 0x20, + POOL16F = 0x21, + SB16 = 0x22, + BEQZ16 = 0x23, + SLTI32 = 0x24, + BEQ32 = 0x25, + SWC132 = 0x26, + LWC132 = 0x27, + + /* 0x28 and 0x29 are reserved */ + RES_28 = 0x28, + RES_29 = 0x29, + SH16 = 0x2a, + BNEZ16 = 0x2b, + SLTIU32 = 0x2c, + BNE32 = 0x2d, + SDC132 = 0x2e, + LDC132 = 0x2f, + + /* 0x30 and 0x31 are reserved */ + RES_30 = 0x30, + RES_31 = 0x31, + SWSP16 = 0x32, + B16 = 0x33, + ANDI32 = 0x34, + J32 = 0x35, + SD32 = 0x36, + LD32 = 0x37, + + /* 0x38 and 0x39 are reserved */ + RES_38 = 0x38, + RES_39 = 0x39, + SW16 = 0x3a, + LI16 = 0x3b, + JALX32 = 0x3c, + JAL32 = 0x3d, + SW32 = 0x3e, + LW32 = 0x3f +}; + +/* POOL32A encoding of minor opcode field */ + +enum { + /* These opcodes are distinguished only by bits 9..6; those bits are + * what are recorded below. */ + SLL32 = 0x0, + SRL32 = 0x1, + SRA = 0x2, + ROTR = 0x3, + + SLLV = 0x0, + SRLV = 0x1, + SRAV = 0x2, + ROTRV = 0x3, + ADD = 0x4, + ADDU32 = 0x5, + SUB = 0x6, + SUBU32 = 0x7, + MUL = 0x8, + AND = 0x9, + OR32 = 0xa, + NOR = 0xb, + XOR32 = 0xc, + SLT = 0xd, + SLTU = 0xe, + + MOVN = 0x0, + MOVZ = 0x1, + LWXS = 0x4, + + /* The following can be distinguished by their lower 6 bits. */ + INS = 0x0c, + EXT = 0x2c, + POOL32AXF = 0x3c +}; + +/* POOL32AXF encoding of minor opcode field extension */ + +enum { + /* bits 11..6 */ + TEQ = 0x00, + TGE = 0x08, + TGEU = 0x10, + TLT = 0x20, + TLTU = 0x28, + TNE = 0x30, + + MFC0 = 0x03, + MTC0 = 0x0b, + + /* bits 13..12 for 0x01 */ + MFHI_ACC = 0x0, + MFLO_ACC = 0x1, + MTHI_ACC = 0x2, + MTLO_ACC = 0x3, + + /* bits 13..12 for 0x2a */ + MADD_ACC = 0x0, + MADDU_ACC = 0x1, + MSUB_ACC = 0x2, + MSUBU_ACC = 0x3, + + /* bits 13..12 for 0x32 */ + MULT_ACC = 0x0, + MULTU_ACC = 0x0, + + /* bits 15..12 for 0x2c */ + SEB = 0x2, + SEH = 0x3, + CLO = 0x4, + CLZ = 0x5, + RDHWR = 0x6, + WSBH = 0x7, + MULT = 0x8, + MULTU = 0x9, + DIV = 0xa, + DIVU = 0xb, + MADD = 0xc, + MADDU = 0xd, + MSUB = 0xe, + MSUBU = 0xf, + + /* bits 15..12 for 0x34 */ + MFC2 = 0x4, + MTC2 = 0x5, + MFHC2 = 0x8, + MTHC2 = 0x9, + CFC2 = 0xc, + CTC2 = 0xd, + + /* bits 15..12 for 0x3c */ + JALR = 0x0, + JR = 0x0, /* alias */ + JALR_HB = 0x1, + JALRS = 0x4, + JALRS_HB = 0x5, + + /* bits 15..12 for 0x05 */ + RDPGPR = 0xe, + WRPGPR = 0xf, + + /* bits 15..12 for 0x0d */ + TLBP = 0x0, + TLBR = 0x1, + TLBWI = 0x2, + TLBWR = 0x3, + WAIT = 0x9, + IRET = 0xd, + DERET = 0xe, + ERET = 0xf, + + /* bits 15..12 for 0x15 */ + DMT = 0x0, + DVPE = 0x1, + EMT = 0x2, + EVPE = 0x3, + + /* bits 15..12 for 0x1d */ + DI = 0x4, + EI = 0x5, + + /* bits 15..12 for 0x2d */ + SYNC = 0x6, + SYSCALL = 0x8, + SDBBP = 0xd, + + /* bits 15..12 for 0x35 */ + MFHI32 = 0x0, + MFLO32 = 0x1, + MTHI32 = 0x2, + MTLO32 = 0x3, +}; + +/* POOL32B encoding of minor opcode field (bits 15..12) */ + +enum { + LWC2 = 0x0, + LWP = 0x1, + LDP = 0x4, + LWM32 = 0x5, + CACHE = 0x6, + LDM = 0x7, + SWC2 = 0x8, + SWP = 0x9, + SDP = 0xc, + SWM32 = 0xd, + SDM = 0xf +}; + +/* POOL32C encoding of minor opcode field (bits 15..12) */ + +enum { + LWL = 0x0, + SWL = 0x8, + LWR = 0x1, + SWR = 0x9, + PREF = 0x2, + /* 0xa is reserved */ + LL = 0x3, + SC = 0xb, + LDL = 0x4, + SDL = 0xc, + LDR = 0x5, + SDR = 0xd, + /* 0x6 is reserved */ + LWU = 0xe, + LLD = 0x7, + SCD = 0xf +}; + +/* POOL32F encoding of minor opcode field (bits 5..0) */ + +enum { + /* These are the bit 7..6 values */ + ADD_FMT = 0x0, + MOVN_FMT = 0x0, + + SUB_FMT = 0x1, + MOVZ_FMT = 0x1, + + MUL_FMT = 0x2, + + DIV_FMT = 0x3, + + /* These are the bit 8..6 values */ + RSQRT2_FMT = 0x0, + MOVF_FMT = 0x0, + + LWXC1 = 0x1, + MOVT_FMT = 0x1, + + PLL_PS = 0x2, + SWXC1 = 0x2, + + PLU_PS = 0x3, + LDXC1 = 0x3, + + PUL_PS = 0x4, + SDXC1 = 0x4, + RECIP2_FMT = 0x4, + + PUU_PS = 0x5, + LUXC1 = 0x5, + + CVT_PS_S = 0x6, + SUXC1 = 0x6, + ADDR_PS = 0x6, + PREFX = 0x6, + + MULR_PS = 0x7, + + MADD_S = 0x01, + MADD_D = 0x09, + MADD_PS = 0x11, + ALNV_PS = 0x19, + MSUB_S = 0x21, + MSUB_D = 0x29, + MSUB_PS = 0x31, + + NMADD_S = 0x02, + NMADD_D = 0x0a, + NMADD_PS = 0x12, + NMSUB_S = 0x22, + NMSUB_D = 0x2a, + NMSUB_PS = 0x32, + + POOL32FXF = 0x3b, + + CABS_COND_FMT = 0x1c, /* MIPS3D */ + C_COND_FMT = 0x3c +}; + +/* POOL32Fxf encoding of minor opcode extension field */ + +enum { + CVT_L = 0x04, + RSQRT_FMT = 0x08, + FLOOR_L = 0x0c, + CVT_PW_PS = 0x1c, + CVT_W = 0x24, + SQRT_FMT = 0x28, + FLOOR_W = 0x2c, + CVT_PS_PW = 0x3c, + CFC1 = 0x40, + RECIP_FMT = 0x48, + CEIL_L = 0x4c, + CTC1 = 0x60, + CEIL_W = 0x6c, + MFC1 = 0x80, + CVT_S_PL = 0x84, + TRUNC_L = 0x8c, + MTC1 = 0xa0, + CVT_S_PU = 0xa4, + TRUNC_W = 0xac, + MFHC1 = 0xc0, + ROUND_L = 0xcc, + MTHC1 = 0xe0, + ROUND_W = 0xec, + + MOV_FMT = 0x01, + MOVF = 0x05, + ABS_FMT = 0x0d, + RSQRT1_FMT = 0x1d, + MOVT = 0x25, + NEG_FMT = 0x2d, + CVT_D = 0x4d, + RECIP1_FMT = 0x5d, + CVT_S = 0x6d +}; + +/* POOL32I encoding of minor opcode field (bits 25..21) */ + +enum { + BLTZ = 0x00, + BLTZAL = 0x01, + BGEZ = 0x02, + BGEZAL = 0x03, + BLEZ = 0x04, + BNEZC = 0x05, + BGTZ = 0x06, + BEQZC = 0x07, + TLTI = 0x08, + TGEI = 0x09, + TLTIU = 0x0a, + TGEIU = 0x0b, + TNEI = 0x0c, + LUI = 0x0d, + TEQI = 0x0e, + SYNCI = 0x10, + BLTZALS = 0x11, + BGEZALS = 0x13, + BC2F = 0x14, + BC2T = 0x15, + BPOSGE64 = 0x1a, + BPOSGE32 = 0x1b, + /* These overlap and are distinguished by bit16 of the instruction */ + BC1F = 0x1c, + BC1T = 0x1d, + BC1ANY2F = 0x1c, + BC1ANY2T = 0x1d, + BC1ANY4F = 0x1e, + BC1ANY4T = 0x1f +}; + +/* POOL16A encoding of minor opcode field */ + +enum { + ADDU16 = 0x0, + SUBU16 = 0x1 +}; + +/* POOL16B encoding of minor opcode field */ + +enum { + SLL16 = 0x0, + SRL16 = 0x1 +}; + +/* POOL16C encoding of minor opcode field */ + +enum { + NOT16 = 0x00, + XOR16 = 0x04, + AND16 = 0x08, + OR16 = 0x0c, + LWM16 = 0x10, + SWM16 = 0x14, + JR16 = 0x18, + JRC16 = 0x1a, + JALR16 = 0x1c, + JALR16S = 0x1e, + MFHI16 = 0x20, + MFLO16 = 0x24, + BREAK16 = 0x28, + SDBBP16 = 0x2c, + JRADDIUSP = 0x30 +}; + +/* POOL16D encoding of minor opcode field */ + +enum { + ADDIUS5 = 0x0, + ADDIUSP = 0x1 +}; + +/* POOL16E encoding of minor opcode field */ + +enum { + ADDIUR2 = 0x0, + ADDIUR1SP = 0x1 +}; + +static int mmreg (int r) +{ + static const int map[] = { 16, 17, 2, 3, 4, 5, 6, 7 }; + + return map[r]; +} + +/* Used for 16-bit store instructions. */ +static int mmreg2 (int r) +{ + static const int map[] = { 0, 17, 2, 3, 4, 5, 6, 7 }; + + return map[r]; +} + +#define uMIPS_RD(op) ((op >> 7) & 0x7) +#define uMIPS_RS(op) ((op >> 4) & 0x7) +#define uMIPS_RS2(op) uMIPS_RS(op) +#define uMIPS_RS1(op) ((op >> 1) & 0x7) +#define uMIPS_RD5(op) ((op >> 5) & 0x1f) +#define uMIPS_RS5(op) (op & 0x1f) + +/* Signed immediate */ +#define SIMM(op, start, width) \ + ((int32_t)(((op >> start) & ((~0U) >> (32-width))) \ + << (32-width)) \ + >> (32-width)) +/* Zero-extended immediate */ +#define ZIMM(op, start, width) ((op >> start) & ((~0U) >> (32-width))) + +static void gen_addiur1sp (CPUState *env, DisasContext *ctx) +{ + int rd = mmreg(uMIPS_RD(ctx->opcode)); + + gen_arith_imm(env, ctx, OPC_ADDIU, rd, 29, ((ctx->opcode >> 1) & 0x3f) << 2); +} + +static void gen_addiur2 (CPUState *env, DisasContext *ctx) +{ + static const int decoded_imm[] = { 1, 4, 8, 12, 16, 20, 24, -1 }; + int rd = mmreg(uMIPS_RD(ctx->opcode)); + int rs = mmreg(uMIPS_RS(ctx->opcode)); + + gen_arith_imm(env, ctx, OPC_ADDIU, rd, rs, decoded_imm[ZIMM(ctx->opcode, 1, 3)]); +} + +static void gen_addiusp (CPUState *env, DisasContext *ctx) +{ + int encoded = ZIMM(ctx->opcode, 1, 9); + int decoded; + + if (encoded <= 1) { + decoded = 256 + encoded; + } else if (encoded <= 255) { + decoded = encoded; + } else if (encoded <= 509) { + decoded = encoded - 512; + } else { + decoded = encoded - 768; + } + + gen_arith_imm(env, ctx, OPC_ADDIU, 29, 29, decoded << 2); +} + +static void gen_addius5 (CPUState *env, DisasContext *ctx) +{ + int imm = SIMM(ctx->opcode, 1, 4); + int rd = (ctx->opcode >> 5) & 0x1f; + + gen_arith_imm(env, ctx, OPC_ADDIU, rd, rd, imm); +} + +static void gen_andi16 (CPUState *env, DisasContext *ctx) +{ + static const int decoded_imm[] = { 128, 1, 2, 3, 4, 7, 8, 15, 16, + 31, 32, 63, 64, 255, 32768, 65535 }; + int rd = mmreg(uMIPS_RD(ctx->opcode)); + int rs = mmreg(uMIPS_RS(ctx->opcode)); + int encoded = ZIMM(ctx->opcode, 0, 4); + + gen_logic_imm(env, OPC_ANDI, rd, rs, decoded_imm[encoded]); +} + +static void gen_ldst_multiple (DisasContext *ctx, uint32_t opc, int reglist, + int base, int16_t offset) +{ + TCGv t0, t1; + TCGv_i32 t2; + + if (ctx->hflags & MIPS_HFLAG_BMASK) { + generate_exception(ctx, EXCP_RI); + return; + } + + t0 = tcg_temp_new(); + + gen_base_offset_addr(ctx, t0, base, offset); + + t1 = tcg_const_tl(reglist); + t2 = tcg_const_i32(ctx->mem_idx); + + save_cpu_state(ctx, 1); + switch (opc) { + case LWM32: + gen_helper_lwm(t0, t1, t2); + break; + case SWM32: + gen_helper_swm(t0, t1, t2); + break; +#ifdef TARGET_MIPS64 + case LDM: + gen_helper_ldm(t0, t1, t2); + break; + case SDM: + gen_helper_sdm(t0, t1, t2); + break; +#endif + } + MIPS_DEBUG("%s, %x, %d(%s)", opn, reglist, offset, regnames[base]); + tcg_temp_free(t0); + tcg_temp_free_i32(t1); + tcg_temp_free_i32(t2); +} + + +static void gen_pool16c_insn (CPUState *env, DisasContext *ctx, int *is_branch) +{ + int rd = mmreg((ctx->opcode >> 3) & 0x7); + int rs = mmreg(ctx->opcode & 0x7); + int opc; + + switch (((ctx->opcode) >> 4) & 0x3f) { + case NOT16 + 0: + case NOT16 + 1: + case NOT16 + 2: + case NOT16 + 3: + gen_logic(env, OPC_NOR, rd, rs, 0); + break; + case XOR16 + 0: + case XOR16 + 1: + case XOR16 + 2: + case XOR16 + 3: + gen_logic(env, OPC_XOR, rd, rd, rs); + break; + case AND16 + 0: + case AND16 + 1: + case AND16 + 2: + case AND16 + 3: + gen_logic(env, OPC_AND, rd, rd, rs); + break; + case OR16 + 0: + case OR16 + 1: + case OR16 + 2: + case OR16 + 3: + gen_logic(env, OPC_OR, rd, rd, rs); + break; + case LWM16 + 0: + case LWM16 + 1: + case LWM16 + 2: + case LWM16 + 3: + { + static const int lwm_convert[] = { 0x11, 0x12, 0x13, 0x14 }; + int offset = ZIMM(ctx->opcode, 0, 4); + + gen_ldst_multiple(ctx, LWM32, lwm_convert[(ctx->opcode >> 4) & 0x3], + 29, offset << 2); + } + break; + case SWM16 + 0: + case SWM16 + 1: + case SWM16 + 2: + case SWM16 + 3: + { + static const int swm_convert[] = { 0x11, 0x12, 0x13, 0x14 }; + int offset = ZIMM(ctx->opcode, 0, 4); + + gen_ldst_multiple(ctx, SWM32, swm_convert[(ctx->opcode >> 4) & 0x3], + 29, offset << 2); + } + break; + case JR16 + 0: + case JR16 + 1: + { + int reg = ctx->opcode & 0x1f; + + gen_compute_branch(ctx, OPC_JR, 2, reg, 0, 0); + } + *is_branch = 1; + break; + case JRC16 + 0: + case JRC16 + 1: + { + int reg = ctx->opcode & 0x1f; + + gen_compute_branch(ctx, OPC_JR, 2, reg, 0, 0); + /* Let normal delay slot handling in our caller take us + to the branch target. */ + } + break; + case JALR16 + 0: + case JALR16 + 1: + opc = OPC_JALR; + goto do_jalr; + case JALR16S + 0: + case JALR16S + 1: + opc = OPC_JALRS; + do_jalr: + { + int reg = ctx->opcode & 0x1f; + + gen_compute_branch(ctx, opc, 2, reg, 31, 0); + } + *is_branch = 1; + break; + case MFHI16 + 0: + case MFHI16 + 1: + gen_HILO(ctx, OPC_MFHI, uMIPS_RS5(ctx->opcode)); + break; + case MFLO16 + 0: + case MFLO16 + 1: + gen_HILO(ctx, OPC_MFLO, uMIPS_RS5(ctx->opcode)); + break; + case BREAK16: + generate_exception(ctx, EXCP_BREAK); + break; + case SDBBP16: + /* XXX: not clear which exception should be raised + * when in debug mode... + */ + check_insn(env, ctx, ISA_MIPS32); + if (!(ctx->hflags & MIPS_HFLAG_DM)) { + generate_exception(ctx, EXCP_DBp); + } else { + generate_exception(ctx, EXCP_DBp); + } + break; + case JRADDIUSP + 0: + case JRADDIUSP + 1: + { + int imm = ZIMM(ctx->opcode, 0, 5); + + gen_compute_branch(ctx, OPC_JR, 2, 31, 0, 0); + gen_arith_imm(env, ctx, OPC_ADDIU, 29, 29, imm << 2); + /* Let normal delay slot handling in our caller take us + to the branch target. */ + } + break; + default: + generate_exception(ctx, EXCP_RI); + break; + } +} + +static void gen_ldxs (DisasContext *ctx, int base, int index, int rd) +{ + TCGv t0 = tcg_temp_new(); + TCGv t1 = tcg_temp_new(); + + gen_load_gpr(t0, base); + + if (index != 0) { + gen_load_gpr(t1, index); + tcg_gen_shli_tl(t1, t1, 2); + gen_op_addr_add(ctx, t0, t1, t0); + } + + save_cpu_state(ctx, 0); + op_ldst_lw(t1, t0, ctx); + gen_store_gpr(t1, rd); + + tcg_temp_free(t0); + tcg_temp_free(t1); +} + +static void gen_ldst_pair (DisasContext *ctx, uint32_t opc, int rd, + int base, int16_t offset) +{ + const char *opn = "ldst_pair"; + TCGv t0, t1; + + if (ctx->hflags & MIPS_HFLAG_BMASK || rd == 31 || rd == base) { + generate_exception(ctx, EXCP_RI); + return; + } + + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + + gen_base_offset_addr(ctx, t0, base, offset); + + switch (opc) { + case LWP: + save_cpu_state(ctx, 0); + op_ldst_lw(t1, t0, ctx); + gen_store_gpr(t1, rd); + tcg_gen_movi_tl(t1, 4); + gen_op_addr_add(ctx, t0, t0, t1); + op_ldst_lw(t1, t0, ctx); + gen_store_gpr(t1, rd+1); + opn = "lwp"; + break; + case SWP: + save_cpu_state(ctx, 1); + gen_load_gpr(t1, rd); + op_ldst_sw(t1, t0, ctx); + tcg_gen_movi_tl(t1, 4); + gen_op_addr_add(ctx, t0, t0, t1); + gen_load_gpr(t1, rd+1); + op_ldst_sw(t1, t0, ctx); + opn = "swp"; + break; +#ifdef TARGET_MIPS64 + case LDP: + save_cpu_state(ctx, 0); + op_ldst_ld(t1, t0, ctx); + gen_store_gpr(t1, rd); + tcg_gen_movi_tl(t1, 8); + gen_op_addr_add(ctx, t0, t0, t1); + op_ldst_ld(t1, t0, ctx); + gen_store_gpr(t1, rd+1); + opn = "ldp"; + break; + case SDP: + save_cpu_state(ctx, 1); + gen_load_gpr(t1, rd); + op_ldst_sd(t1, t0, ctx); + tcg_gen_movi_tl(t1, 8); + gen_op_addr_add(ctx, t0, t0, t1); + gen_load_gpr(t1, rd+1); + op_ldst_sd(t1, t0, ctx); + opn = "sdp"; + break; +#endif + } + MIPS_DEBUG("%s, %s, %d(%s)", opn, regnames[rd], offset, regnames[base]); + tcg_temp_free(t0); + tcg_temp_free(t1); +} + +static void gen_pool32axf (CPUState *env, DisasContext *ctx, int rt, int rs, + int *is_branch) +{ + int extension = (ctx->opcode >> 6) & 0x3f; + int minor = (ctx->opcode >> 12) & 0xf; + uint32_t mips32_op; + + switch (extension) { + case TEQ: + mips32_op = OPC_TEQ; + goto do_trap; + case TGE: + mips32_op = OPC_TGE; + goto do_trap; + case TGEU: + mips32_op = OPC_TGEU; + goto do_trap; + case TLT: + mips32_op = OPC_TLT; + goto do_trap; + case TLTU: + mips32_op = OPC_TLTU; + goto do_trap; + case TNE: + mips32_op = OPC_TNE; + do_trap: + gen_trap(ctx, mips32_op, rs, rt, -1); + break; +#ifndef CONFIG_USER_ONLY + case MFC0: + case MFC0 + 32: + if (rt == 0) { + /* Treat as NOP. */ + break; + } + gen_mfc0(env, ctx, cpu_gpr[rt], rs, (ctx->opcode >> 11) & 0x7); + break; + case MTC0: + case MTC0 + 32: + { + TCGv t0 = tcg_temp_new(); + + gen_load_gpr(t0, rt); + gen_mtc0(env, ctx, t0, rs, (ctx->opcode >> 11) & 0x7); + tcg_temp_free(t0); + } + break; +#endif + case 0x2c: + switch (minor) { + case SEB: + gen_bshfl(ctx, OPC_SEB, rs, rt); + break; + case SEH: + gen_bshfl(ctx, OPC_SEH, rs, rt); + break; + case CLO: + mips32_op = OPC_CLO; + goto do_cl; + case CLZ: + mips32_op = OPC_CLZ; + do_cl: + check_insn(env, ctx, ISA_MIPS32); + gen_cl(ctx, mips32_op, rt, rs); + break; + case RDHWR: + gen_rdhwr(env, ctx, rt, rs); + break; + case WSBH: + gen_bshfl(ctx, OPC_WSBH, rs, rt); + break; + case MULT: + mips32_op = OPC_MULT; + goto do_muldiv; + case MULTU: + mips32_op = OPC_MULTU; + goto do_muldiv; + case DIV: + mips32_op = OPC_DIV; + goto do_muldiv; + case DIVU: + mips32_op = OPC_DIVU; + goto do_muldiv; + case MADD: + mips32_op = OPC_MADD; + goto do_muldiv; + case MADDU: + mips32_op = OPC_MADDU; + goto do_muldiv; + case MSUB: + mips32_op = OPC_MSUB; + goto do_muldiv; + case MSUBU: + mips32_op = OPC_MSUBU; + do_muldiv: + check_insn(env, ctx, ISA_MIPS32); + gen_muldiv(ctx, mips32_op, rs, rt); + break; + default: + goto pool32axf_invalid; + } + break; + case 0x34: + switch (minor) { + case MFC2: + case MTC2: + case MFHC2: + case MTHC2: + case CFC2: + case CTC2: + generate_exception_err(ctx, EXCP_CpU, 2); + break; + default: + goto pool32axf_invalid; + } + break; + case 0x3c: + switch (minor) { + case JALR: + case JALR_HB: + gen_compute_branch (ctx, OPC_JALR, 4, rs, rt, 0); + *is_branch = 1; + break; + case JALRS: + case JALRS_HB: + gen_compute_branch (ctx, OPC_JALRS, 4, rs, rt, 0); + *is_branch = 1; + break; + default: + goto pool32axf_invalid; + } + break; + case 0x05: + switch (minor) { + case RDPGPR: + check_insn(env, ctx, ISA_MIPS32R2); + gen_load_srsgpr(rt, rs); + break; + case WRPGPR: + check_insn(env, ctx, ISA_MIPS32R2); + gen_store_srsgpr(rt, rs); + break; + default: + goto pool32axf_invalid; + } + break; +#ifndef CONFIG_USER_ONLY + case 0x0d: + switch (minor) { + case TLBP: + mips32_op = OPC_TLBP; + goto do_cp0; + case TLBR: + mips32_op = OPC_TLBR; + goto do_cp0; + case TLBWI: + mips32_op = OPC_TLBWI; + goto do_cp0; + case TLBWR: + mips32_op = OPC_TLBWR; + goto do_cp0; + case WAIT: + mips32_op = OPC_WAIT; + goto do_cp0; + case DERET: + mips32_op = OPC_DERET; + goto do_cp0; + case ERET: + mips32_op = OPC_ERET; + do_cp0: + gen_cp0(env, ctx, mips32_op, rt, rs); + break; + default: + goto pool32axf_invalid; + } + break; + case 0x1d: + switch (minor) { + case DI: + { + TCGv t0 = tcg_temp_new(); + + save_cpu_state(ctx, 1); + gen_helper_di(t0); + gen_store_gpr(t0, rs); + /* Stop translation as we may have switched the execution mode */ + ctx->bstate = BS_STOP; + tcg_temp_free(t0); + } + break; + case EI: + { + TCGv t0 = tcg_temp_new(); + + save_cpu_state(ctx, 1); + gen_helper_ei(t0); + gen_store_gpr(t0, rs); + /* Stop translation as we may have switched the execution mode */ + ctx->bstate = BS_STOP; + tcg_temp_free(t0); + } + break; + default: + goto pool32axf_invalid; + } + break; +#endif + case 0x2d: + switch (minor) { + case SYNC: + /* NOP */ + break; + case SYSCALL: + generate_exception(ctx, EXCP_SYSCALL); + ctx->bstate = BS_STOP; + break; + case SDBBP: + check_insn(env, ctx, ISA_MIPS32); + if (!(ctx->hflags & MIPS_HFLAG_DM)) { + generate_exception(ctx, EXCP_DBp); + } else { + generate_exception(ctx, EXCP_DBp); + } + break; + default: + goto pool32axf_invalid; + } + break; + case 0x35: + switch (minor) { + case MFHI32: + gen_HILO(ctx, OPC_MFHI, rs); + break; + case MFLO32: + gen_HILO(ctx, OPC_MFLO, rs); + break; + case MTHI32: + gen_HILO(ctx, OPC_MTHI, rs); + break; + case MTLO32: + gen_HILO(ctx, OPC_MTLO, rs); + break; + default: + goto pool32axf_invalid; + } + break; + default: + pool32axf_invalid: + MIPS_INVAL("pool32axf"); + generate_exception(ctx, EXCP_RI); + break; + } +} + +/* Values for microMIPS fmt field. Variable-width, depending on which + formats the instruction supports. */ + +enum { + FMT_SD_S = 0, + FMT_SD_D = 1, + + FMT_SDPS_S = 0, + FMT_SDPS_D = 1, + FMT_SDPS_PS = 2, + + FMT_SWL_S = 0, + FMT_SWL_W = 1, + FMT_SWL_L = 2, + + FMT_DWL_D = 0, + FMT_DWL_W = 1, + FMT_DWL_L = 2 +}; + +static void gen_pool32fxf (CPUState *env, DisasContext *ctx, int rt, int rs) +{ + int extension = (ctx->opcode >> 6) & 0x3ff; + uint32_t mips32_op; + +#define FLOAT_1BIT_FMT(opc, fmt) (fmt << 8) | opc +#define FLOAT_2BIT_FMT(opc, fmt) (fmt << 7) | opc +#define COND_FLOAT_MOV(opc, cond) (cond << 7) | opc + + switch (extension) { + case FLOAT_1BIT_FMT(CFC1, 0): + mips32_op = OPC_CFC1; + goto do_cp1; + case FLOAT_1BIT_FMT(CTC1, 0): + mips32_op = OPC_CTC1; + goto do_cp1; + case FLOAT_1BIT_FMT(MFC1, 0): + mips32_op = OPC_MFC1; + goto do_cp1; + case FLOAT_1BIT_FMT(MTC1, 0): + mips32_op = OPC_MTC1; + goto do_cp1; + case FLOAT_1BIT_FMT(MFHC1, 0): + mips32_op = OPC_MFHC1; + goto do_cp1; + case FLOAT_1BIT_FMT(MTHC1, 0): + mips32_op = OPC_MTHC1; + do_cp1: + gen_cp1(ctx, mips32_op, rt, rs); + break; + + /* Reciprocal square root */ + case FLOAT_1BIT_FMT(RSQRT_FMT, FMT_SD_S): + mips32_op = OPC_RSQRT_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(RSQRT_FMT, FMT_SD_D): + mips32_op = OPC_RSQRT_D; + goto do_unaryfp; + + /* Square root */ + case FLOAT_1BIT_FMT(SQRT_FMT, FMT_SD_S): + mips32_op = OPC_SQRT_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(SQRT_FMT, FMT_SD_D): + mips32_op = OPC_SQRT_D; + goto do_unaryfp; + + /* Reciprocal */ + case FLOAT_1BIT_FMT(RECIP_FMT, FMT_SD_S): + mips32_op = OPC_RECIP_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(RECIP_FMT, FMT_SD_D): + mips32_op = OPC_RECIP_D; + goto do_unaryfp; + + /* Floor */ + case FLOAT_1BIT_FMT(FLOOR_L, FMT_SD_S): + mips32_op = OPC_FLOOR_L_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(FLOOR_L, FMT_SD_D): + mips32_op = OPC_FLOOR_L_D; + goto do_unaryfp; + case FLOAT_1BIT_FMT(FLOOR_W, FMT_SD_S): + mips32_op = OPC_FLOOR_W_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(FLOOR_W, FMT_SD_D): + mips32_op = OPC_FLOOR_W_D; + goto do_unaryfp; + + /* Ceiling */ + case FLOAT_1BIT_FMT(CEIL_L, FMT_SD_S): + mips32_op = OPC_CEIL_L_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(CEIL_L, FMT_SD_D): + mips32_op = OPC_CEIL_L_D; + goto do_unaryfp; + case FLOAT_1BIT_FMT(CEIL_W, FMT_SD_S): + mips32_op = OPC_CEIL_W_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(CEIL_W, FMT_SD_D): + mips32_op = OPC_CEIL_W_D; + goto do_unaryfp; + + /* Truncation */ + case FLOAT_1BIT_FMT(TRUNC_L, FMT_SD_S): + mips32_op = OPC_TRUNC_L_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(TRUNC_L, FMT_SD_D): + mips32_op = OPC_TRUNC_L_D; + goto do_unaryfp; + case FLOAT_1BIT_FMT(TRUNC_W, FMT_SD_S): + mips32_op = OPC_TRUNC_W_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(TRUNC_W, FMT_SD_D): + mips32_op = OPC_TRUNC_W_D; + goto do_unaryfp; + + /* Round */ + case FLOAT_1BIT_FMT(ROUND_L, FMT_SD_S): + mips32_op = OPC_ROUND_L_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(ROUND_L, FMT_SD_D): + mips32_op = OPC_ROUND_L_D; + goto do_unaryfp; + case FLOAT_1BIT_FMT(ROUND_W, FMT_SD_S): + mips32_op = OPC_ROUND_W_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(ROUND_W, FMT_SD_D): + mips32_op = OPC_ROUND_W_D; + goto do_unaryfp; + + /* Integer to floating-point conversion */ + case FLOAT_1BIT_FMT(CVT_L, FMT_SD_S): + mips32_op = OPC_CVT_L_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(CVT_L, FMT_SD_D): + mips32_op = OPC_CVT_L_D; + goto do_unaryfp; + case FLOAT_1BIT_FMT(CVT_W, FMT_SD_S): + mips32_op = OPC_CVT_W_S; + goto do_unaryfp; + case FLOAT_1BIT_FMT(CVT_W, FMT_SD_D): + mips32_op = OPC_CVT_W_D; + goto do_unaryfp; + + /* Paired-foo conversions */ + case FLOAT_1BIT_FMT(CVT_S_PL, 0): + mips32_op = OPC_CVT_S_PL; + goto do_unaryfp; + case FLOAT_1BIT_FMT(CVT_S_PU, 0): + mips32_op = OPC_CVT_S_PU; + goto do_unaryfp; + case FLOAT_1BIT_FMT(CVT_PW_PS, 0): + mips32_op = OPC_CVT_PW_PS; + goto do_unaryfp; + case FLOAT_1BIT_FMT(CVT_PS_PW, 0): + mips32_op = OPC_CVT_PS_PW; + goto do_unaryfp; + + /* Floating-point moves */ + case FLOAT_2BIT_FMT(MOV_FMT, FMT_SDPS_S): + mips32_op = OPC_MOV_S; + goto do_unaryfp; + case FLOAT_2BIT_FMT(MOV_FMT, FMT_SDPS_D): + mips32_op = OPC_MOV_D; + goto do_unaryfp; + case FLOAT_2BIT_FMT(MOV_FMT, FMT_SDPS_PS): + mips32_op = OPC_MOV_PS; + goto do_unaryfp; + + /* Absolute value */ + case FLOAT_2BIT_FMT(ABS_FMT, FMT_SDPS_S): + mips32_op = OPC_ABS_S; + goto do_unaryfp; + case FLOAT_2BIT_FMT(ABS_FMT, FMT_SDPS_D): + mips32_op = OPC_ABS_D; + goto do_unaryfp; + case FLOAT_2BIT_FMT(ABS_FMT, FMT_SDPS_PS): + mips32_op = OPC_ABS_PS; + goto do_unaryfp; + + /* Negation */ + case FLOAT_2BIT_FMT(NEG_FMT, FMT_SDPS_S): + mips32_op = OPC_NEG_S; + goto do_unaryfp; + case FLOAT_2BIT_FMT(NEG_FMT, FMT_SDPS_D): + mips32_op = OPC_NEG_D; + goto do_unaryfp; + case FLOAT_2BIT_FMT(NEG_FMT, FMT_SDPS_PS): + mips32_op = OPC_NEG_PS; + goto do_unaryfp; + + /* Reciprocal square root step */ + case FLOAT_2BIT_FMT(RSQRT1_FMT, FMT_SDPS_S): + mips32_op = OPC_RSQRT1_S; + goto do_unaryfp; + case FLOAT_2BIT_FMT(RSQRT1_FMT, FMT_SDPS_D): + mips32_op = OPC_RSQRT1_D; + goto do_unaryfp; + case FLOAT_2BIT_FMT(RSQRT1_FMT, FMT_SDPS_PS): + mips32_op = OPC_RSQRT1_PS; + goto do_unaryfp; + + /* Reciprocal step */ + case FLOAT_2BIT_FMT(RECIP1_FMT, FMT_SDPS_S): + mips32_op = OPC_RECIP1_S; + goto do_unaryfp; + case FLOAT_2BIT_FMT(RECIP1_FMT, FMT_SDPS_D): + mips32_op = OPC_RECIP1_S; + goto do_unaryfp; + case FLOAT_2BIT_FMT(RECIP1_FMT, FMT_SDPS_PS): + mips32_op = OPC_RECIP1_PS; + goto do_unaryfp; + + /* Conversions from double */ + case FLOAT_2BIT_FMT(CVT_D, FMT_SWL_S): + mips32_op = OPC_CVT_D_S; + goto do_unaryfp; + case FLOAT_2BIT_FMT(CVT_D, FMT_SWL_W): + mips32_op = OPC_CVT_D_W; + goto do_unaryfp; + case FLOAT_2BIT_FMT(CVT_D, FMT_SWL_L): + mips32_op = OPC_CVT_D_L; + goto do_unaryfp; + + /* Conversions from single */ + case FLOAT_2BIT_FMT(CVT_S, FMT_DWL_D): + mips32_op = OPC_CVT_S_D; + goto do_unaryfp; + case FLOAT_2BIT_FMT(CVT_S, FMT_DWL_W): + mips32_op = OPC_CVT_S_W; + goto do_unaryfp; + case FLOAT_2BIT_FMT(CVT_S, FMT_DWL_L): + mips32_op = OPC_CVT_S_L; + do_unaryfp: + gen_farith(ctx, mips32_op, -1, rs, rt, 0); + break; + + /* Conditional moves on floating-point codes */ + case COND_FLOAT_MOV(MOVT, 0): + case COND_FLOAT_MOV(MOVT, 1): + case COND_FLOAT_MOV(MOVT, 2): + case COND_FLOAT_MOV(MOVT, 3): + case COND_FLOAT_MOV(MOVT, 4): + case COND_FLOAT_MOV(MOVT, 5): + case COND_FLOAT_MOV(MOVT, 6): + case COND_FLOAT_MOV(MOVT, 7): + gen_movci(ctx, rt, rs, (ctx->opcode >> 13) & 0x7, 1); + break; + case COND_FLOAT_MOV(MOVF, 0): + case COND_FLOAT_MOV(MOVF, 1): + case COND_FLOAT_MOV(MOVF, 2): + case COND_FLOAT_MOV(MOVF, 3): + case COND_FLOAT_MOV(MOVF, 4): + case COND_FLOAT_MOV(MOVF, 5): + case COND_FLOAT_MOV(MOVF, 6): + case COND_FLOAT_MOV(MOVF, 7): + gen_movci(ctx, rt, rs, (ctx->opcode >> 13) & 0x7, 0); + break; + default: + MIPS_INVAL("pool32fxf"); + generate_exception(ctx, EXCP_RI); + break; + } +} + +static void decode_micromips32_opc (CPUState *env, DisasContext *ctx, + uint16_t insn_hw1, int *is_branch) +{ + int32_t offset; + uint16_t insn; + int rt, rs, rd, rr; + int16_t imm; + uint32_t op, minor, mips32_op; + uint32_t cond, fmt, cc; + + insn = lduw_code(ctx->pc + 2); + ctx->opcode = (ctx->opcode << 16) | insn; + + rt = (ctx->opcode >> 21) & 0x1f; + rs = (ctx->opcode >> 16) & 0x1f; + rd = (ctx->opcode >> 11) & 0x1f; + rr = (ctx->opcode >> 6) & 0x1f; + imm = (int16_t) ctx->opcode; + + op = (ctx->opcode >> 26) & 0x3f; + switch (op) { + case POOL32A: + minor = ctx->opcode & 0x3f; + switch (minor) { + case 0x00: + minor = (ctx->opcode >> 6) & 0xf; + switch (minor) { + case SLL32: + mips32_op = OPC_SLL; + goto do_shifti; + case SRA: + mips32_op = OPC_SRA; + goto do_shifti; + case SRL32: + mips32_op = OPC_SRL; + goto do_shifti; + case ROTR: + mips32_op = OPC_ROTR; + do_shifti: + gen_shift_imm(env, ctx, mips32_op, rt, rs, rd); + break; + default: + goto pool32a_invalid; + } + break; + case 0x10: + minor = (ctx->opcode >> 6) & 0xf; + switch (minor) { + /* Arithmetic */ + case ADD: + mips32_op = OPC_ADD; + goto do_arith; + case ADDU32: + mips32_op = OPC_ADDU; + goto do_arith; + case SUB: + mips32_op = OPC_SUB; + goto do_arith; + case SUBU32: + mips32_op = OPC_SUBU; + goto do_arith; + case MUL: + mips32_op = OPC_MUL; + do_arith: + gen_arith(env, ctx, mips32_op, rd, rs, rt); + break; + /* Shifts */ + case SLLV: + mips32_op = OPC_SLLV; + goto do_shift; + case SRLV: + mips32_op = OPC_SRLV; + goto do_shift; + case SRAV: + mips32_op = OPC_SRAV; + goto do_shift; + case ROTRV: + mips32_op = OPC_ROTRV; + do_shift: + gen_shift(env, ctx, mips32_op, rd, rs, rt); + break; + /* Logical operations */ + case AND: + mips32_op = OPC_AND; + goto do_logic; + case OR32: + mips32_op = OPC_OR; + goto do_logic; + case NOR: + mips32_op = OPC_NOR; + goto do_logic; + case XOR32: + mips32_op = OPC_XOR; + do_logic: + gen_logic(env, mips32_op, rd, rs, rt); + break; + /* Set less than */ + case SLT: + mips32_op = OPC_SLT; + goto do_slt; + case SLTU: + mips32_op = OPC_SLTU; + do_slt: + gen_slt(env, mips32_op, rd, rs, rt); + break; + default: + goto pool32a_invalid; + } + break; + case 0x18: + minor = (ctx->opcode >> 6) & 0xf; + switch (minor) { + /* Conditional moves */ + case MOVN: + mips32_op = OPC_MOVN; + goto do_cmov; + case MOVZ: + mips32_op = OPC_MOVZ; + do_cmov: + gen_cond_move(env, mips32_op, rd, rs, rt); + break; + case LWXS: + gen_ldxs(ctx, rs, rt, rd); + break; + default: + goto pool32a_invalid; + } + break; + case INS: + gen_bitops(ctx, OPC_INS, rt, rs, rr, rd); + return; + case EXT: + gen_bitops(ctx, OPC_EXT, rt, rs, rr, rd); + return; + case POOL32AXF: + gen_pool32axf(env, ctx, rt, rs, is_branch); + break; + case 0x07: + generate_exception(ctx, EXCP_BREAK); + break; + default: + pool32a_invalid: + MIPS_INVAL("pool32a"); + generate_exception(ctx, EXCP_RI); + break; + } + break; + case POOL32B: + minor = (ctx->opcode >> 12) & 0xf; + switch (minor) { + case CACHE: + /* Treat as no-op. */ + break; + case LWC2: + case SWC2: + /* COP2: Not implemented. */ + generate_exception_err(ctx, EXCP_CpU, 2); + break; + case LWP: + case SWP: +#ifdef TARGET_MIPS64 + case LDP: + case SDP: +#endif + gen_ldst_pair(ctx, minor, rt, rs, SIMM(ctx->opcode, 0, 12)); + break; + case LWM32: + case SWM32: +#ifdef TARGET_MIPS64 + case LDM: + case SDM: +#endif + gen_ldst_multiple(ctx, minor, rt, rs, SIMM(ctx->opcode, 0, 12)); + break; + default: + MIPS_INVAL("pool32b"); + generate_exception(ctx, EXCP_RI); + break; + } + break; + case POOL32F: + if (env->CP0_Config1 & (1 << CP0C1_FP)) { + minor = ctx->opcode & 0x3f; + check_cp1_enabled(ctx); + switch (minor) { + case ALNV_PS: + mips32_op = OPC_ALNV_PS; + goto do_madd; + case MADD_S: + mips32_op = OPC_MADD_S; + goto do_madd; + case MADD_D: + mips32_op = OPC_MADD_D; + goto do_madd; + case MADD_PS: + mips32_op = OPC_MADD_PS; + goto do_madd; + case MSUB_S: + mips32_op = OPC_MSUB_S; + goto do_madd; + case MSUB_D: + mips32_op = OPC_MSUB_D; + goto do_madd; + case MSUB_PS: + mips32_op = OPC_MSUB_PS; + goto do_madd; + case NMADD_S: + mips32_op = OPC_NMADD_S; + goto do_madd; + case NMADD_D: + mips32_op = OPC_NMADD_D; + goto do_madd; + case NMADD_PS: + mips32_op = OPC_NMADD_PS; + goto do_madd; + case NMSUB_S: + mips32_op = OPC_NMSUB_S; + goto do_madd; + case NMSUB_D: + mips32_op = OPC_NMSUB_D; + goto do_madd; + case NMSUB_PS: + mips32_op = OPC_NMSUB_PS; + do_madd: + gen_flt3_arith(ctx, mips32_op, rd, rr, rs, rt); + break; + case CABS_COND_FMT: + cond = (ctx->opcode >> 6) & 0xf; + cc = (ctx->opcode >> 13) & 0x7; + fmt = (ctx->opcode >> 10) & 0x3; + switch (fmt) { + case 0x0: + gen_cmpabs_s(ctx, cond, rt, rs, cc); + break; + case 0x1: + gen_cmpabs_d(ctx, cond, rt, rs, cc); + break; + case 0x2: + gen_cmpabs_ps(ctx, cond, rt, rs, cc); + break; + default: + goto pool32f_invalid; + } + break; + case C_COND_FMT: + cond = (ctx->opcode >> 6) & 0xf; + cc = (ctx->opcode >> 13) & 0x7; + fmt = (ctx->opcode >> 10) & 0x3; + switch (fmt) { + case 0x0: + gen_cmp_s(ctx, cond, rt, rs, cc); + break; + case 0x1: + gen_cmp_d(ctx, cond, rt, rs, cc); + break; + case 0x2: + gen_cmp_ps(ctx, cond, rt, rs, cc); + break; + default: + goto pool32f_invalid; + } + break; + case POOL32FXF: + gen_pool32fxf(env, ctx, rt, rs); + break; + case 0x00: + /* PLL foo */ + switch ((ctx->opcode >> 6) & 0x7) { + case PLL_PS: + mips32_op = OPC_PLL_PS; + goto do_ps; + case PLU_PS: + mips32_op = OPC_PLU_PS; + goto do_ps; + case PUL_PS: + mips32_op = OPC_PUL_PS; + goto do_ps; + case PUU_PS: + mips32_op = OPC_PUU_PS; + goto do_ps; + case CVT_PS_S: + mips32_op = OPC_CVT_PS_S; + do_ps: + gen_farith(ctx, mips32_op, rt, rs, rd, 0); + break; + default: + goto pool32f_invalid; + } + break; + case 0x08: + /* [LS][WDU]XC1 */ + switch ((ctx->opcode >> 6) & 0x7) { + case LWXC1: + mips32_op = OPC_LWXC1; + goto do_ldst_cp1; + case SWXC1: + mips32_op = OPC_SWXC1; + goto do_ldst_cp1; + case LDXC1: + mips32_op = OPC_LDXC1; + goto do_ldst_cp1; + case SDXC1: + mips32_op = OPC_SDXC1; + goto do_ldst_cp1; + case LUXC1: + mips32_op = OPC_LUXC1; + goto do_ldst_cp1; + case SUXC1: + mips32_op = OPC_SUXC1; + do_ldst_cp1: + gen_flt3_ldst(ctx, mips32_op, rd, rd, rt, rs); + break; + default: + goto pool32f_invalid; + } + break; + case 0x18: + /* 3D insns */ + fmt = (ctx->opcode >> 9) & 0x3; + switch ((ctx->opcode >> 6) & 0x7) { + case RSQRT2_FMT: + switch (fmt) { + case FMT_SDPS_S: + mips32_op = OPC_RSQRT2_S; + goto do_3d; + case FMT_SDPS_D: + mips32_op = OPC_RSQRT2_D; + goto do_3d; + case FMT_SDPS_PS: + mips32_op = OPC_RSQRT2_PS; + goto do_3d; + default: + goto pool32f_invalid; + } + break; + case RECIP2_FMT: + switch (fmt) { + case FMT_SDPS_S: + mips32_op = OPC_RECIP2_S; + goto do_3d; + case FMT_SDPS_D: + mips32_op = OPC_RECIP2_D; + goto do_3d; + case FMT_SDPS_PS: + mips32_op = OPC_RECIP2_PS; + goto do_3d; + default: + goto pool32f_invalid; + } + break; + case ADDR_PS: + mips32_op = OPC_ADDR_PS; + goto do_3d; + case MULR_PS: + mips32_op = OPC_MULR_PS; + do_3d: + gen_farith(ctx, mips32_op, rt, rs, rd, 0); + break; + default: + goto pool32f_invalid; + } + break; + case 0x20: + /* MOV[FT].fmt and PREFX */ + cc = (ctx->opcode >> 13) & 0x7; + fmt = (ctx->opcode >> 9) & 0x3; + switch ((ctx->opcode >> 6) & 0x7) { + case MOVF_FMT: + switch (fmt) { + case FMT_SDPS_S: + gen_movcf_s(rs, rt, cc, 0); + break; + case FMT_SDPS_D: + gen_movcf_d(ctx, rs, rt, cc, 0); + break; + case FMT_SDPS_PS: + gen_movcf_ps(rs, rt, cc, 0); + break; + default: + goto pool32f_invalid; + } + break; + case MOVT_FMT: + switch (fmt) { + case FMT_SDPS_S: + gen_movcf_s(rs, rt, cc, 1); + break; + case FMT_SDPS_D: + gen_movcf_d(ctx, rs, rt, cc, 1); + break; + case FMT_SDPS_PS: + gen_movcf_ps(rs, rt, cc, 1); + break; + default: + goto pool32f_invalid; + } + break; + case PREFX: + break; + default: + goto pool32f_invalid; + } + break; +#define FINSN_3ARG_SDPS(prfx) \ + switch ((ctx->opcode >> 8) & 0x3) { \ + case FMT_SDPS_S: \ + mips32_op = OPC_##prfx##_S; \ + goto do_fpop; \ + case FMT_SDPS_D: \ + mips32_op = OPC_##prfx##_D; \ + goto do_fpop; \ + case FMT_SDPS_PS: \ + mips32_op = OPC_##prfx##_PS; \ + goto do_fpop; \ + default: \ + goto pool32f_invalid; \ + } + case 0x30: + /* regular FP ops */ + switch ((ctx->opcode >> 6) & 0x3) { + case ADD_FMT: + FINSN_3ARG_SDPS(ADD); + break; + case SUB_FMT: + FINSN_3ARG_SDPS(SUB); + break; + case MUL_FMT: + FINSN_3ARG_SDPS(MUL); + break; + case DIV_FMT: + fmt = (ctx->opcode >> 8) & 0x3; + if (fmt == 1) { + mips32_op = OPC_DIV_D; + } else if (fmt == 0) { + mips32_op = OPC_DIV_S; + } else { + goto pool32f_invalid; + } + goto do_fpop; + default: + goto pool32f_invalid; + } + break; + case 0x38: + /* cmovs */ + switch ((ctx->opcode >> 6) & 0x3) { + case MOVN_FMT: + FINSN_3ARG_SDPS(MOVN); + break; + case MOVZ_FMT: + FINSN_3ARG_SDPS(MOVZ); + break; + default: + goto pool32f_invalid; + } + break; + do_fpop: + gen_farith(ctx, mips32_op, rt, rs, rd, 0); + break; + default: + pool32f_invalid: + MIPS_INVAL("pool32f"); + generate_exception(ctx, EXCP_RI); + break; + } + } else { + generate_exception_err(ctx, EXCP_CpU, 1); + } + break; + case POOL32I: + minor = (ctx->opcode >> 21) & 0x1f; + switch (minor) { + case BLTZ: + mips32_op = OPC_BLTZ; + goto do_branch; + case BLTZAL: + mips32_op = OPC_BLTZAL; + goto do_branch; + case BLTZALS: + mips32_op = OPC_BLTZALS; + goto do_branch; + case BGEZ: + mips32_op = OPC_BGEZ; + goto do_branch; + case BGEZAL: + mips32_op = OPC_BGEZAL; + goto do_branch; + case BGEZALS: + mips32_op = OPC_BGEZALS; + goto do_branch; + case BLEZ: + mips32_op = OPC_BLEZ; + goto do_branch; + case BGTZ: + mips32_op = OPC_BGTZ; + do_branch: + gen_compute_branch(ctx, mips32_op, 4, rs, -1, imm << 1); + *is_branch = 1; + break; + + /* Traps */ + case TLTI: + mips32_op = OPC_TLTI; + goto do_trapi; + case TGEI: + mips32_op = OPC_TGEI; + goto do_trapi; + case TLTIU: + mips32_op = OPC_TLTIU; + goto do_trapi; + case TGEIU: + mips32_op = OPC_TGEIU; + goto do_trapi; + case TNEI: + mips32_op = OPC_TNEI; + goto do_trapi; + case TEQI: + mips32_op = OPC_TEQI; + do_trapi: + gen_trap(ctx, mips32_op, rs, -1, imm); + break; + + case BNEZC: + case BEQZC: + gen_compute_branch(ctx, minor == BNEZC ? OPC_BNE : OPC_BEQ, + 4, rs, 0, imm << 1); + /* Compact branches don't have a delay slot, so just let + the normal delay slot handling take us to the branch + target. */ + break; + case LUI: + gen_logic_imm(env, OPC_LUI, rs, -1, imm); + break; + case SYNCI: + break; + case BC2F: + case BC2T: + /* COP2: Not implemented. */ + generate_exception_err(ctx, EXCP_CpU, 2); + break; + case BC1F: + mips32_op = (ctx->opcode & (1 << 16)) ? OPC_BC1FANY2 : OPC_BC1F; + goto do_cp1branch; + case BC1T: + mips32_op = (ctx->opcode & (1 << 16)) ? OPC_BC1TANY2 : OPC_BC1T; + goto do_cp1branch; + case BC1ANY4F: + mips32_op = OPC_BC1FANY4; + goto do_cp1mips3d; + case BC1ANY4T: + mips32_op = OPC_BC1TANY4; + do_cp1mips3d: + check_cop1x(ctx); + check_insn(env, ctx, ASE_MIPS3D); + /* Fall through */ + do_cp1branch: + gen_compute_branch1(env, ctx, mips32_op, + (ctx->opcode >> 18) & 0x7, imm << 1); + *is_branch = 1; + break; + case BPOSGE64: + case BPOSGE32: + /* MIPS DSP: not implemented */ + /* Fall through */ + default: + MIPS_INVAL("pool32i"); + generate_exception(ctx, EXCP_RI); + break; + } + break; + case POOL32C: + minor = (ctx->opcode >> 12) & 0xf; + switch (minor) { + case LWL: + mips32_op = OPC_LWL; + goto do_ldst_lr; + case SWL: + mips32_op = OPC_SWL; + goto do_ldst_lr; + case LWR: + mips32_op = OPC_LWR; + goto do_ldst_lr; + case SWR: + mips32_op = OPC_SWR; + goto do_ldst_lr; +#if defined(TARGET_MIPS64) + case LDL: + mips32_op = OPC_LDL; + goto do_ldst_lr; + case SDL: + mips32_op = OPC_SDL; + goto do_ldst_lr; + case LDR: + mips32_op = OPC_LDR; + goto do_ldst_lr; + case SDR: + mips32_op = OPC_SDR; + goto do_ldst_lr; + case LWU: + mips32_op = OPC_LWU; + goto do_ldst_lr; + case LLD: + mips32_op = OPC_LLD; + goto do_ldst_lr; +#endif + case LL: + mips32_op = OPC_LL; + do_ldst_lr: + gen_ldst(ctx, mips32_op, rt, rs, SIMM(ctx->opcode, 0, 12)); + break; + case SC: + gen_st_cond(ctx, OPC_SC, rt, rs, SIMM(ctx->opcode, 0, 12)); + break; +#if defined(TARGET_MIPS64) + case SCD: + gen_st_cond(ctx, OPC_SCD, rt, rs, SIMM(ctx->opcode, 0, 12)); + break; +#endif + case PREF: + /* Treat as no-op */ + break; + default: + MIPS_INVAL("pool32c"); + generate_exception(ctx, EXCP_RI); + break; + } + break; + case ADDI32: + mips32_op = OPC_ADDI; + goto do_addi; + case ADDIU32: + mips32_op = OPC_ADDIU; + do_addi: + gen_arith_imm(env, ctx, mips32_op, rt, rs, imm); + break; + + /* Logical operations */ + case ORI32: + mips32_op = OPC_ORI; + goto do_logici; + case XORI32: + mips32_op = OPC_XORI; + goto do_logici; + case ANDI32: + mips32_op = OPC_ANDI; + do_logici: + gen_logic_imm(env, mips32_op, rt, rs, imm); + break; + + /* Set less than immediate */ + case SLTI32: + mips32_op = OPC_SLTI; + goto do_slti; + case SLTIU32: + mips32_op = OPC_SLTIU; + do_slti: + gen_slt_imm(env, mips32_op, rt, rs, imm); + break; + case JALX32: + offset = (int32_t)(ctx->opcode & 0x3FFFFFF) << 2; + gen_compute_branch(ctx, OPC_JALX, 4, rt, rs, offset); + *is_branch = 1; + break; + case JALS32: + offset = (int32_t)(ctx->opcode & 0x3FFFFFF) << 1; + gen_compute_branch(ctx, OPC_JALS, 4, rt, rs, offset); + *is_branch = 1; + break; + case BEQ32: + gen_compute_branch(ctx, OPC_BEQ, 4, rt, rs, imm << 1); + *is_branch = 1; + break; + case BNE32: + gen_compute_branch(ctx, OPC_BNE, 4, rt, rs, imm << 1); + *is_branch = 1; + break; + case J32: + gen_compute_branch(ctx, OPC_J, 4, rt, rs, + (int32_t)(ctx->opcode & 0x3FFFFFF) << 1); + *is_branch = 1; + break; + case JAL32: + gen_compute_branch(ctx, OPC_JAL, 4, rt, rs, + (int32_t)(ctx->opcode & 0x3FFFFFF) << 1); + *is_branch = 1; + break; + /* Floating point (COP1) */ + case LWC132: + mips32_op = OPC_LWC1; + goto do_cop1; + case LDC132: + mips32_op = OPC_LDC1; + goto do_cop1; + case SWC132: + mips32_op = OPC_SWC1; + goto do_cop1; + case SDC132: + mips32_op = OPC_SDC1; + do_cop1: + gen_cop1_ldst(env, ctx, mips32_op, rt, rs, imm); + break; + case ADDIUPC: + { + int reg = mmreg(ZIMM(ctx->opcode, 23, 3)); + int offset = SIMM(ctx->opcode, 0, 23) << 2; + + gen_addiupc(ctx, reg, offset, 0, 0); + } + break; + /* Loads and stores */ + case LB32: + mips32_op = OPC_LB; + goto do_ldst; + case LBU32: + mips32_op = OPC_LBU; + goto do_ldst; + case LH32: + mips32_op = OPC_LH; + goto do_ldst; + case LHU32: + mips32_op = OPC_LHU; + goto do_ldst; + case LW32: + mips32_op = OPC_LW; + goto do_ldst; +#ifdef TARGET_MIPS64 + case LD32: + mips32_op = OPC_LD; + goto do_ldst; + case SD32: + mips32_op = OPC_SD; + goto do_ldst; +#endif + case SB32: + mips32_op = OPC_SB; + goto do_ldst; + case SH32: + mips32_op = OPC_SH; + goto do_ldst; + case SW32: + mips32_op = OPC_SW; + do_ldst: + gen_ldst(ctx, mips32_op, rt, rs, imm); + break; + default: + generate_exception(ctx, EXCP_RI); + break; + } +} + +static int decode_micromips_opc (CPUState *env, DisasContext *ctx, int *is_branch) +{ + uint32_t op; + + /* make sure instructions are on a halfword boundary */ + if (ctx->pc & 0x1) { + env->CP0_BadVAddr = ctx->pc; + generate_exception(ctx, EXCP_AdEL); + ctx->bstate = BS_STOP; + return 2; + } + + op = (ctx->opcode >> 10) & 0x3f; + /* Enforce properly-sized instructions in a delay slot */ + if (ctx->hflags & MIPS_HFLAG_BMASK) { + int bits = ctx->hflags & MIPS_HFLAG_BMASK_EXT; + + switch (op) { + case POOL32A: + case POOL32B: + case POOL32I: + case POOL32C: + case ADDI32: + case ADDIU32: + case ORI32: + case XORI32: + case SLTI32: + case SLTIU32: + case ANDI32: + case JALX32: + case LBU32: + case LHU32: + case POOL32F: + case JALS32: + case BEQ32: + case BNE32: + case J32: + case JAL32: + case SB32: + case SH32: + case POOL32S: + case ADDIUPC: + case SWC132: + case SDC132: + case SD32: + case SW32: + case LB32: + case LH32: + case DADDIU32: + case POOL48A: /* ??? */ + case LWC132: + case LDC132: + case LD32: + case LW32: + if (bits & MIPS_HFLAG_BDS16) { + generate_exception(ctx, EXCP_RI); + /* Just stop translation; the user is confused. */ + ctx->bstate = BS_STOP; + return 2; + } + break; + case POOL16A: + case POOL16B: + case POOL16C: + case LWGP16: + case POOL16F: + case LBU16: + case LHU16: + case LWSP16: + case LW16: + case SB16: + case SH16: + case SWSP16: + case SW16: + case MOVE16: + case ANDI16: + case POOL16D: + case POOL16E: + case BEQZ16: + case BNEZ16: + case B16: + case LI16: + if (bits & MIPS_HFLAG_BDS32) { + generate_exception(ctx, EXCP_RI); + /* Just stop translation; the user is confused. */ + ctx->bstate = BS_STOP; + return 2; + } + break; + default: + break; + } + } + switch (op) { + case POOL16A: + { + int rd = mmreg(uMIPS_RD(ctx->opcode)); + int rs1 = mmreg(uMIPS_RS1(ctx->opcode)); + int rs2 = mmreg(uMIPS_RS2(ctx->opcode)); + uint32_t opc = 0; + + switch (ctx->opcode & 0x1) { + case ADDU16: + opc = OPC_ADDU; + break; + case SUBU16: + opc = OPC_SUBU; + break; + } + + gen_arith(env, ctx, opc, rd, rs1, rs2); + } + break; + case POOL16B: + { + int rd = mmreg(uMIPS_RD(ctx->opcode)); + int rs = mmreg(uMIPS_RS(ctx->opcode)); + int amount = (ctx->opcode >> 1) & 0x7; + uint32_t opc = 0; + amount = amount == 0 ? 8 : amount; + + switch (ctx->opcode & 0x1) { + case SLL16: + opc = OPC_SLL; + break; + case SRL16: + opc = OPC_SRL; + break; + } + + gen_shift_imm(env, ctx, opc, rd, rs, amount); + } + break; + case POOL16C: + gen_pool16c_insn(env, ctx, is_branch); + break; + case LWGP16: + { + int rd = mmreg(uMIPS_RD(ctx->opcode)); + int rb = 28; /* GP */ + int16_t offset = SIMM(ctx->opcode, 0, 7) << 2; + + gen_ldst(ctx, OPC_LW, rd, rb, offset); + } + break; + case POOL16F: + if (ctx->opcode & 1) { + generate_exception(ctx, EXCP_RI); + } else { + /* MOVEP */ + int enc_dest = uMIPS_RD(ctx->opcode); + int enc_rt = uMIPS_RS2(ctx->opcode); + int enc_rs = uMIPS_RS1(ctx->opcode); + int rd, rs, re, rt; + static const int rd_enc[] = { 5, 5, 6, 4, 4, 4, 4, 4 }; + static const int re_enc[] = { 6, 7, 7, 21, 22, 5, 6, 7 }; + static const int rs_rt_enc[] = { 0, 17, 2, 3, 16, 18, 19, 20 }; + + rd = rd_enc[enc_dest]; + re = re_enc[enc_dest]; + rs = rs_rt_enc[enc_rs]; + rt = rs_rt_enc[enc_rt]; + + gen_arith_imm(env, ctx, OPC_ADDIU, rd, rs, 0); + gen_arith_imm(env, ctx, OPC_ADDIU, re, rt, 0); + } + break; + case LBU16: + { + int rd = mmreg(uMIPS_RD(ctx->opcode)); + int rb = mmreg(uMIPS_RS(ctx->opcode)); + int16_t offset = ZIMM(ctx->opcode, 0, 4); + offset = (offset == 0xf ? -1 : offset); + + gen_ldst(ctx, OPC_LBU, rd, rb, offset); + } + break; + case LHU16: + { + int rd = mmreg(uMIPS_RD(ctx->opcode)); + int rb = mmreg(uMIPS_RS(ctx->opcode)); + int16_t offset = ZIMM(ctx->opcode, 0, 4) << 1; + + gen_ldst(ctx, OPC_LHU, rd, rb, offset); + } + break; + case LWSP16: + { + int rd = (ctx->opcode >> 5) & 0x1f; + int rb = 29; /* SP */ + int16_t offset = ZIMM(ctx->opcode, 0, 5) << 2; + + gen_ldst(ctx, OPC_LW, rd, rb, offset); + } + break; + case LW16: + { + int rd = mmreg(uMIPS_RD(ctx->opcode)); + int rb = mmreg(uMIPS_RS(ctx->opcode)); + int16_t offset = ZIMM(ctx->opcode, 0, 4) << 2; + + gen_ldst(ctx, OPC_LW, rd, rb, offset); + } + break; + case SB16: + { + int rd = mmreg2(uMIPS_RD(ctx->opcode)); + int rb = mmreg(uMIPS_RS(ctx->opcode)); + int16_t offset = ZIMM(ctx->opcode, 0, 4); + + gen_ldst(ctx, OPC_SB, rd, rb, offset); + } + break; + case SH16: + { + int rd = mmreg2(uMIPS_RD(ctx->opcode)); + int rb = mmreg(uMIPS_RS(ctx->opcode)); + int16_t offset = ZIMM(ctx->opcode, 0, 4) << 1; + + gen_ldst(ctx, OPC_SH, rd, rb, offset); + } + break; + case SWSP16: + { + int rd = (ctx->opcode >> 5) & 0x1f; + int rb = 29; /* SP */ + int16_t offset = ZIMM(ctx->opcode, 0, 5) << 2; + + gen_ldst(ctx, OPC_SW, rd, rb, offset); + } + break; + case SW16: + { + int rd = mmreg2(uMIPS_RD(ctx->opcode)); + int rb = mmreg(uMIPS_RS(ctx->opcode)); + int16_t offset = ZIMM(ctx->opcode, 0, 4) << 2; + + gen_ldst(ctx, OPC_SW, rd, rb, offset); + } + break; + case MOVE16: + { + int rd = uMIPS_RD5(ctx->opcode); + int rs = uMIPS_RS5(ctx->opcode); + + gen_arith_imm(env, ctx, OPC_ADDIU, rd, rs, 0); + } + break; + case ANDI16: + gen_andi16(env, ctx); + break; + case POOL16D: + switch (ctx->opcode & 0x1) { + case ADDIUS5: + gen_addius5(env, ctx); + break; + case ADDIUSP: + gen_addiusp(env, ctx); + break; + } + break; + case POOL16E: + switch (ctx->opcode & 0x1) { + case ADDIUR2: + gen_addiur2(env, ctx); + break; + case ADDIUR1SP: + gen_addiur1sp(env, ctx); + break; + } + break; + case B16: + gen_compute_branch(ctx, OPC_BEQ, 2, 0, 0, + SIMM(ctx->opcode, 0, 10) << 1); + *is_branch = 1; + break; + case BNEZ16: + case BEQZ16: + gen_compute_branch(ctx, op == BNEZ16 ? OPC_BNE : OPC_BEQ, 2, + mmreg(uMIPS_RD(ctx->opcode)), + 0, SIMM(ctx->opcode, 0, 7) << 1); + *is_branch = 1; + break; + case LI16: + { + int reg = mmreg(uMIPS_RD(ctx->opcode)); + int imm = ZIMM(ctx->opcode, 0, 7); + + imm = (imm == 0x7f ? -1 : imm); + tcg_gen_movi_tl(cpu_gpr[reg], imm); + } + break; + case RES_20: + case RES_28: + case RES_29: + case RES_30: + case RES_31: + case RES_38: + case RES_39: + generate_exception(ctx, EXCP_RI); + break; + default: + decode_micromips32_opc (env, ctx, op, is_branch); + return 4; + } + + return 2; +} + /* SmartMIPS extension to MIPS32 */ #if defined(TARGET_MIPS64) @@ -9548,7 +11924,7 @@ static void decode_opc (CPUState *env, DisasContext *ctx, int *is_branch) break; #endif case OPC_JALX: - check_insn(env, ctx, ASE_MIPS16); + check_insn(env, ctx, ASE_MIPS16 | ASE_MICROMIPS); offset = (int32_t)(ctx->opcode & 0x3FFFFFF) << 2; gen_compute_branch(ctx, op, 4, rs, rt, offset); *is_branch = 1; @@ -9636,11 +12012,15 @@ gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb, ctx.opcode = ldl_code(ctx.pc); insn_bytes = 4; decode_opc(env, &ctx, &is_branch); + } else if (env->insn_flags & ASE_MICROMIPS) { + ctx.opcode = lduw_code(ctx.pc); + insn_bytes = decode_micromips_opc(env, &ctx, &is_branch); } else if (env->insn_flags & ASE_MIPS16) { ctx.opcode = lduw_code(ctx.pc); insn_bytes = decode_mips16_opc(env, &ctx, &is_branch); } else { generate_exception(&ctx, EXCP_RI); + ctx.bstate = BS_STOP; break; } if (!is_branch) { |