/* * MIPS emulation for qemu: CPU initialisation routines. * * Copyright (c) 2004-2005 Jocelyn Mayer * Copyright (c) 2007 Herve Poussineau * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see . */ /* CPU / CPU family specific config register values. */ /* Have config1, uncached coherency */ #define MIPS_CONFIG0 \ ((1U << CP0C0_M) | (0x2 << CP0C0_K0)) /* Have config2, no coprocessor2 attached, no MDMX support attached, no performance counters, watch registers present, no code compression, EJTAG present, no FPU */ #define MIPS_CONFIG1 \ ((1U << CP0C1_M) | \ (0 << CP0C1_C2) | (0 << CP0C1_MD) | (0 << CP0C1_PC) | \ (1 << CP0C1_WR) | (0 << CP0C1_CA) | (1 << CP0C1_EP) | \ (0 << CP0C1_FP)) /* Have config3, no tertiary/secondary caches implemented */ #define MIPS_CONFIG2 \ ((1U << CP0C2_M)) /* No config4, no DSP ASE, no large physaddr (PABITS), no external interrupt controller, no vectored interrupts, no 1kb pages, no SmartMIPS ASE, no trace logic */ #define MIPS_CONFIG3 \ ((0 << CP0C3_M) | (0 << CP0C3_DSPP) | (0 << CP0C3_LPA) | \ (0 << CP0C3_VEIC) | (0 << CP0C3_VInt) | (0 << CP0C3_SP) | \ (0 << CP0C3_SM) | (0 << CP0C3_TL)) #define MIPS_CONFIG4 \ ((0 << CP0C4_M)) #define MIPS_CONFIG5 \ ((0 << CP0C5_M)) /*****************************************************************************/ /* MIPS CPU definitions */ const mips_def_t mips_defs[] = { { .name = "4Kc", .CP0_PRid = 0x00018000, .CP0_Config0 = MIPS_CONFIG0 | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) | (0 << CP0C1_CA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3, .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x1278FF17, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32, .mmu_type = MMU_TYPE_R4000, }, { .name = "4Km", .CP0_PRid = 0x00018300, /* Config1 implemented, fixed mapping MMU, no virtual icache, uncached coherency. */ .CP0_Config0 = MIPS_CONFIG0 | (MMU_TYPE_FMT << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_CA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3, .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x1258FF17, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32 | ASE_MIPS16, .mmu_type = MMU_TYPE_FMT, }, { .name = "4KEcR1", .CP0_PRid = 0x00018400, .CP0_Config0 = MIPS_CONFIG0 | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) | (0 << CP0C1_CA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3, .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x1278FF17, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32, .mmu_type = MMU_TYPE_R4000, }, { .name = "4KEmR1", .CP0_PRid = 0x00018500, .CP0_Config0 = MIPS_CONFIG0 | (MMU_TYPE_FMT << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_CA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3, .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x1258FF17, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32 | ASE_MIPS16, .mmu_type = MMU_TYPE_FMT, }, { .name = "4KEc", .CP0_PRid = 0x00019000, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) | (0 << CP0C1_CA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (0 << CP0C3_VInt), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x1278FF17, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R2, .mmu_type = MMU_TYPE_R4000, }, { .name = "4KEm", .CP0_PRid = 0x00019100, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (MMU_TYPE_FMT << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_CA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3, .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x1258FF17, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R2 | ASE_MIPS16, .mmu_type = MMU_TYPE_FMT, }, { .name = "24Kc", .CP0_PRid = 0x00019300, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_CA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (0 << CP0C3_VInt), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, /* No DSP implemented. */ .CP0_Status_rw_bitmask = 0x1278FF1F, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R2 | ASE_MIPS16, .mmu_type = MMU_TYPE_R4000, }, { .name = "24KEc", .CP0_PRid = 0x00019600, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_CA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_DSPP) | (0 << CP0C3_VInt), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, /* we have a DSP, but no FPU */ .CP0_Status_rw_bitmask = 0x1378FF1F, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R2 | ASE_MIPS16 | ASE_DSP, .mmu_type = MMU_TYPE_R4000, }, { .name = "24Kf", .CP0_PRid = 0x00019300, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (15 << CP0C1_MMU) | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_CA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (0 << CP0C3_VInt), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, /* No DSP implemented. */ .CP0_Status_rw_bitmask = 0x3678FF1F, .CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) | (1 << FCR0_S) | (0x93 << FCR0_PRID), .CP1_fcr31 = 0, .CP1_fcr31_rw_bitmask = 0xFF83FFFF, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R2 | ASE_MIPS16, .mmu_type = MMU_TYPE_R4000, }, { .name = "34Kf", .CP0_PRid = 0x00019500, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (15 << CP0C1_MMU) | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_CA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_VInt) | (1 << CP0C3_MT) | (1 << CP0C3_DSPP), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 0, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x3778FF1F, .CP0_TCStatus_rw_bitmask = (0 << CP0TCSt_TCU3) | (0 << CP0TCSt_TCU2) | (1 << CP0TCSt_TCU1) | (1 << CP0TCSt_TCU0) | (0 << CP0TCSt_TMX) | (1 << CP0TCSt_DT) | (1 << CP0TCSt_DA) | (1 << CP0TCSt_A) | (0x3 << CP0TCSt_TKSU) | (1 << CP0TCSt_IXMT) | (0xff << CP0TCSt_TASID), .CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) | (1 << FCR0_S) | (0x95 << FCR0_PRID), .CP1_fcr31 = 0, .CP1_fcr31_rw_bitmask = 0xFF83FFFF, .CP0_SRSCtl = (0xf << CP0SRSCtl_HSS), .CP0_SRSConf0_rw_bitmask = 0x3fffffff, .CP0_SRSConf0 = (1U << CP0SRSC0_M) | (0x3fe << CP0SRSC0_SRS3) | (0x3fe << CP0SRSC0_SRS2) | (0x3fe << CP0SRSC0_SRS1), .CP0_SRSConf1_rw_bitmask = 0x3fffffff, .CP0_SRSConf1 = (1U << CP0SRSC1_M) | (0x3fe << CP0SRSC1_SRS6) | (0x3fe << CP0SRSC1_SRS5) | (0x3fe << CP0SRSC1_SRS4), .CP0_SRSConf2_rw_bitmask = 0x3fffffff, .CP0_SRSConf2 = (1U << CP0SRSC2_M) | (0x3fe << CP0SRSC2_SRS9) | (0x3fe << CP0SRSC2_SRS8) | (0x3fe << CP0SRSC2_SRS7), .CP0_SRSConf3_rw_bitmask = 0x3fffffff, .CP0_SRSConf3 = (1U << CP0SRSC3_M) | (0x3fe << CP0SRSC3_SRS12) | (0x3fe << CP0SRSC3_SRS11) | (0x3fe << CP0SRSC3_SRS10), .CP0_SRSConf4_rw_bitmask = 0x3fffffff, .CP0_SRSConf4 = (0x3fe << CP0SRSC4_SRS15) | (0x3fe << CP0SRSC4_SRS14) | (0x3fe << CP0SRSC4_SRS13), .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R2 | ASE_MIPS16 | ASE_DSP | ASE_MT, .mmu_type = MMU_TYPE_R4000, }, { .name = "74Kf", .CP0_PRid = 0x00019700, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (15 << CP0C1_MMU) | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_CA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_DSP2P) | (1 << CP0C3_DSPP) | (1 << CP0C3_VInt), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x3778FF1F, .CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) | (1 << FCR0_S) | (0x93 << FCR0_PRID), .CP1_fcr31 = 0, .CP1_fcr31_rw_bitmask = 0xFF83FFFF, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R2 | ASE_MIPS16 | ASE_DSP | ASE_DSPR2, .mmu_type = MMU_TYPE_R4000, }, { .name = "M14K", .CP0_PRid = 0x00019b00, /* Config1 implemented, fixed mapping MMU, no virtual icache, uncached coherency. */ .CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_KU) | (0x2 << CP0C0_K23) | (0x1 << CP0C0_AR) | (MMU_TYPE_FMT << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1, .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (0x2 << CP0C3_ISA) | (1 << CP0C3_VInt), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x1258FF17, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R2 | ASE_MICROMIPS, .mmu_type = MMU_TYPE_FMT, }, { .name = "M14Kc", /* This is the TLB-based MMU core. */ .CP0_PRid = 0x00019c00, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) | (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) | (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (0x2 << CP0C3_ISA) | (0 << CP0C3_VInt), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x1278FF17, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R2 | ASE_MICROMIPS, .mmu_type = MMU_TYPE_R4000, }, { /* FIXME: * Config3: CMGCR, PW, VZ, CTXTC, CDMM, TL * Config4: MMUExtDef * Config5: MRP * FIR(FCR0): Has2008 * */ .name = "P5600", .CP0_PRid = 0x0001A800, .CP0_Config0 = MIPS_CONFIG0 | (1 << CP0C0_MM) | (1 << CP0C0_AR) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (0x3F << CP0C1_MMU) | (2 << CP0C1_IS) | (4 << CP0C1_IL) | (3 << CP0C1_IA) | (2 << CP0C1_DS) | (4 << CP0C1_DL) | (3 << CP0C1_DA) | (1 << CP0C1_PC) | (1 << CP0C1_FP), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (1U << CP0C3_M) | (1 << CP0C3_MSAP) | (1 << CP0C3_BP) | (1 << CP0C3_BI) | (1 << CP0C3_SC) | (1 << CP0C3_ULRI) | (1 << CP0C3_RXI) | (1 << CP0C3_LPA) | (1 << CP0C3_VInt), .CP0_Config4 = MIPS_CONFIG4 | (1U << CP0C4_M) | (2 << CP0C4_IE) | (0x1c << CP0C4_KScrExist), .CP0_Config4_rw_bitmask = 0, .CP0_Config5 = MIPS_CONFIG5 | (1 << CP0C5_EVA) | (1 << CP0C5_MVH) | (1 << CP0C5_LLB) | (1 << CP0C5_MRP), .CP0_Config5_rw_bitmask = (1 << CP0C5_K) | (1 << CP0C5_CV) | (1 << CP0C5_MSAEn) | (1 << CP0C5_UFE) | (1 << CP0C5_FRE) | (1 << CP0C5_UFR), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 0, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x3C68FF1F, .CP0_PageGrain_rw_bitmask = (1U << CP0PG_RIE) | (1 << CP0PG_XIE) | (1 << CP0PG_ELPA) | (1 << CP0PG_IEC), .CP0_EBaseWG_rw_bitmask = (1 << CP0EBase_WG), .CP1_fcr0 = (1 << FCR0_FREP) | (1 << FCR0_UFRP) | (1 << FCR0_HAS2008) | (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) | (1 << FCR0_S) | (0x03 << FCR0_PRID), .CP1_fcr31 = (1 << FCR31_ABS2008) | (1 << FCR31_NAN2008), .CP1_fcr31_rw_bitmask = 0xFF83FFFF, .SEGBITS = 32, .PABITS = 40, .insn_flags = CPU_MIPS32R5 | ASE_MSA, .mmu_type = MMU_TYPE_R4000, }, { /* A generic CPU supporting MIPS32 Release 6 ISA. FIXME: Support IEEE 754-2008 FP. Eventually this should be replaced by a real CPU model. */ .name = "mips32r6-generic", .CP0_PRid = 0x00010000, .CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AR) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (31 << CP0C1_MMU) | (2 << CP0C1_IS) | (4 << CP0C1_IL) | (3 << CP0C1_IA) | (2 << CP0C1_DS) | (4 << CP0C1_DL) | (3 << CP0C1_DA) | (0 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_BP) | (1 << CP0C3_BI) | (2 << CP0C3_ISA) | (1 << CP0C3_ULRI) | (1 << CP0C3_RXI) | (1U << CP0C3_M), .CP0_Config4 = MIPS_CONFIG4 | (0xfc << CP0C4_KScrExist) | (3 << CP0C4_IE) | (1U << CP0C4_M), .CP0_Config5 = MIPS_CONFIG5 | (1 << CP0C5_XNP) | (1 << CP0C5_LLB), .CP0_Config5_rw_bitmask = (1 << CP0C5_SBRI) | (1 << CP0C5_FRE) | (1 << CP0C5_UFE), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 0, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x3058FF1F, .CP0_PageGrain = (1 << CP0PG_IEC) | (1 << CP0PG_XIE) | (1U << CP0PG_RIE), .CP0_PageGrain_rw_bitmask = 0, .CP1_fcr0 = (1 << FCR0_FREP) | (1 << FCR0_HAS2008) | (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) | (1 << FCR0_S) | (0x00 << FCR0_PRID) | (0x0 << FCR0_REV), .CP1_fcr31 = (1 << FCR31_ABS2008) | (1 << FCR31_NAN2008), .CP1_fcr31_rw_bitmask = 0x0103FFFF, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R6 | ASE_MICROMIPS, .mmu_type = MMU_TYPE_R4000, }, { .name = "I7200", .CP0_PRid = 0x00010000, .CP0_Config0 = MIPS_CONFIG0 | (1 << CP0C0_MM) | (0x2 << CP0C0_AR) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = (1U << CP0C1_M) | (15 << CP0C1_MMU) | (2 << CP0C1_IS) | (4 << CP0C1_IL) | (3 << CP0C1_IA) | (2 << CP0C1_DS) | (4 << CP0C1_DL) | (3 << CP0C1_DA) | (1 << CP0C1_PC) | (1 << CP0C1_EP), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (1U << CP0C3_M) | (1 << CP0C3_CMGCR) | (1 << CP0C3_BI) | (1 << CP0C3_SC) | (3 << CP0C3_MMAR) | (1 << CP0C3_ISA_ON_EXC) | (1 << CP0C3_ISA) | (1 << CP0C3_ULRI) | (1 << CP0C3_RXI) | (1 << CP0C3_DSP2P) | (1 << CP0C3_DSPP) | (1 << CP0C3_CTXTC) | (1 << CP0C3_VInt) | (1 << CP0C3_CDMM) | (1 << CP0C3_MT) | (1 << CP0C3_TL), .CP0_Config4 = MIPS_CONFIG4 | (0xfc << CP0C4_KScrExist) | (2 << CP0C4_IE) | (1U << CP0C4_M), .CP0_Config5 = MIPS_CONFIG5 | (1 << CP0C5_MVH) | (1 << CP0C5_LLB), .CP0_Config5_rw_bitmask = (1 << CP0C5_SBRI) | (1 << CP0C5_FRE) | (1 << CP0C5_UFE), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 0, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x3158FF1F, .CP0_PageGrain = (1 << CP0PG_IEC) | (1 << CP0PG_XIE) | (1U << CP0PG_RIE), .CP0_PageGrain_rw_bitmask = 0, .CP1_fcr0 = (1 << FCR0_FREP) | (1 << FCR0_HAS2008) | (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) | (1 << FCR0_S) | (0x02 << FCR0_PRID) | (0x0 << FCR0_REV), .CP1_fcr31 = (1 << FCR31_ABS2008) | (1 << FCR31_NAN2008), .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_NANOMIPS32 | ASE_DSP | ASE_DSPR2 | ASE_MT, .mmu_type = MMU_TYPE_R4000, }, #if defined(TARGET_MIPS64) { .name = "R4000", .CP0_PRid = 0x00000400, /* No L2 cache, icache size 8k, dcache size 8k, uncached coherency. */ .CP0_Config0 = (1 << 17) | (0x1 << 9) | (0x1 << 6) | (0x2 << CP0C0_K0), /* Note: Config1 is only used internally, the R4000 has only Config0. */ .CP0_Config1 = (1 << CP0C1_FP) | (47 << CP0C1_MMU), .CP0_LLAddr_rw_bitmask = 0xFFFFFFFF, .CP0_LLAddr_shift = 4, .SYNCI_Step = 16, .CCRes = 2, .CP0_Status_rw_bitmask = 0x3678FFFF, /* The R4000 has a full 64bit FPU but doesn't use the fcr0 bits. */ .CP1_fcr0 = (0x5 << FCR0_PRID) | (0x0 << FCR0_REV), .CP1_fcr31 = 0, .CP1_fcr31_rw_bitmask = 0x0183FFFF, .SEGBITS = 40, .PABITS = 36, .insn_flags = CPU_MIPS3, .mmu_type = MMU_TYPE_R4000, }, { .name = "VR5432", .CP0_PRid = 0x00005400, /* No L2 cache, icache size 8k, dcache size 8k, uncached coherency. */ .CP0_Config0 = (1 << 17) | (0x1 << 9) | (0x1 << 6) | (0x2 << CP0C0_K0), .CP0_Config1 = (1 << CP0C1_FP) | (47 << CP0C1_MMU), .CP0_LLAddr_rw_bitmask = 0xFFFFFFFFL, .CP0_LLAddr_shift = 4, .SYNCI_Step = 16, .CCRes = 2, .CP0_Status_rw_bitmask = 0x3678FFFF, /* The VR5432 has a full 64bit FPU but doesn't use the fcr0 bits. */ .CP1_fcr0 = (0x54 << FCR0_PRID) | (0x0 << FCR0_REV), .CP1_fcr31 = 0, .CP1_fcr31_rw_bitmask = 0xFF83FFFF, .SEGBITS = 40, .PABITS = 32, .insn_flags = CPU_VR54XX, .mmu_type = MMU_TYPE_R4000, }, { .name = "5Kc", .CP0_PRid = 0x00018100, .CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AT) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (31 << CP0C1_MMU) | (1 << CP0C1_IS) | (4 << CP0C1_IL) | (1 << CP0C1_IA) | (1 << CP0C1_DS) | (4 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3, .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x12F8FFFF, .SEGBITS = 42, .PABITS = 36, .insn_flags = CPU_MIPS64, .mmu_type = MMU_TYPE_R4000, }, { .name = "5Kf", .CP0_PRid = 0x00018100, .CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AT) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (31 << CP0C1_MMU) | (1 << CP0C1_IS) | (4 << CP0C1_IL) | (1 << CP0C1_IA) | (1 << CP0C1_DS) | (4 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3, .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x36F8FFFF, /* The 5Kf has F64 / L / W but doesn't use the fcr0 bits. */ .CP1_fcr0 = (1 << FCR0_D) | (1 << FCR0_S) | (0x81 << FCR0_PRID) | (0x0 << FCR0_REV), .CP1_fcr31 = 0, .CP1_fcr31_rw_bitmask = 0xFF83FFFF, .SEGBITS = 42, .PABITS = 36, .insn_flags = CPU_MIPS64, .mmu_type = MMU_TYPE_R4000, }, { .name = "20Kc", /* We emulate a later version of the 20Kc, earlier ones had a broken WAIT instruction. */ .CP0_PRid = 0x000182a0, .CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AT) | (MMU_TYPE_R4000 << CP0C0_MT) | (1 << CP0C0_VI), .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (47 << CP0C1_MMU) | (2 << CP0C1_IS) | (4 << CP0C1_IL) | (3 << CP0C1_IA) | (2 << CP0C1_DS) | (4 << CP0C1_DL) | (3 << CP0C1_DA) | (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3, .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 0, .SYNCI_Step = 32, .CCRes = 1, .CP0_Status_rw_bitmask = 0x36FBFFFF, /* The 20Kc has F64 / L / W but doesn't use the fcr0 bits. */ .CP1_fcr0 = (1 << FCR0_3D) | (1 << FCR0_PS) | (1 << FCR0_D) | (1 << FCR0_S) | (0x82 << FCR0_PRID) | (0x0 << FCR0_REV), .CP1_fcr31 = 0, .CP1_fcr31_rw_bitmask = 0xFF83FFFF, .SEGBITS = 40, .PABITS = 36, .insn_flags = CPU_MIPS64 | ASE_MIPS3D, .mmu_type = MMU_TYPE_R4000, }, { /* A generic CPU providing MIPS64 Release 2 features. FIXME: Eventually this should be replaced by a real CPU model. */ .name = "MIPS64R2-generic", .CP0_PRid = 0x00010000, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (0x2 << CP0C0_AT) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (63 << CP0C1_MMU) | (2 << CP0C1_IS) | (4 << CP0C1_IL) | (3 << CP0C1_IA) | (2 << CP0C1_DS) | (4 << CP0C1_DL) | (3 << CP0C1_DA) | (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_LPA), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 0, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x36FBFFFF, .CP0_EBaseWG_rw_bitmask = (1 << CP0EBase_WG), .CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_3D) | (1 << FCR0_PS) | (1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) | (1 << FCR0_S) | (0x00 << FCR0_PRID) | (0x0 << FCR0_REV), .CP1_fcr31 = 0, .CP1_fcr31_rw_bitmask = 0xFF83FFFF, .SEGBITS = 42, .PABITS = 36, .insn_flags = CPU_MIPS64R2 | ASE_MIPS3D, .mmu_type = MMU_TYPE_R4000, }, { .name = "5KEc", .CP0_PRid = 0x00018900, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (0x2 << CP0C0_AT) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (31 << CP0C1_MMU) | (1 << CP0C1_IS) | (4 << CP0C1_IL) | (1 << CP0C1_IA) | (1 << CP0C1_DS) | (4 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3, .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x12F8FFFF, .SEGBITS = 42, .PABITS = 36, .insn_flags = CPU_MIPS64R2, .mmu_type = MMU_TYPE_R4000, }, { .name = "5KEf", .CP0_PRid = 0x00018900, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (0x2 << CP0C0_AT) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (31 << CP0C1_MMU) | (1 << CP0C1_IS) | (4 << CP0C1_IL) | (1 << CP0C1_IA) | (1 << CP0C1_DS) | (4 << CP0C1_DL) | (1 << CP0C1_DA) | (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3, .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 4, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x36F8FFFF, .CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) | (1 << FCR0_S) | (0x89 << FCR0_PRID) | (0x0 << FCR0_REV), .SEGBITS = 42, .PABITS = 36, .insn_flags = CPU_MIPS64R2, .mmu_type = MMU_TYPE_R4000, }, { .name = "I6400", .CP0_PRid = 0x1A900, .CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AR) | (0x2 << CP0C0_AT) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (15 << CP0C1_MMU) | (2 << CP0C1_IS) | (5 << CP0C1_IL) | (3 << CP0C1_IA) | (2 << CP0C1_DS) | (5 << CP0C1_DL) | (3 << CP0C1_DA) | (0 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (1U << CP0C3_M) | (1 << CP0C3_CMGCR) | (1 << CP0C3_MSAP) | (1 << CP0C3_BP) | (1 << CP0C3_BI) | (1 << CP0C3_ULRI) | (1 << CP0C3_RXI) | (1 << CP0C3_LPA) | (1 << CP0C3_VInt), .CP0_Config4 = MIPS_CONFIG4 | (1U << CP0C4_M) | (3 << CP0C4_IE) | (1 << CP0C4_AE) | (0xfc << CP0C4_KScrExist), .CP0_Config5 = MIPS_CONFIG5 | (1 << CP0C5_XNP) | (1 << CP0C5_VP) | (1 << CP0C5_LLB) | (1 << CP0C5_MRP), .CP0_Config5_rw_bitmask = (1 << CP0C5_MSAEn) | (1 << CP0C5_SBRI) | (1 << CP0C5_FRE) | (1 << CP0C5_UFE), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 0, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x30D8FFFF, .CP0_PageGrain = (1 << CP0PG_IEC) | (1 << CP0PG_XIE) | (1U << CP0PG_RIE), .CP0_PageGrain_rw_bitmask = (1 << CP0PG_ELPA), .CP0_EBaseWG_rw_bitmask = (1 << CP0EBase_WG), .CP1_fcr0 = (1 << FCR0_FREP) | (1 << FCR0_HAS2008) | (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) | (1 << FCR0_S) | (0x03 << FCR0_PRID) | (0x0 << FCR0_REV), .CP1_fcr31 = (1 << FCR31_ABS2008) | (1 << FCR31_NAN2008), .CP1_fcr31_rw_bitmask = 0x0103FFFF, .MSAIR = 0x03 << MSAIR_ProcID, .SEGBITS = 48, .PABITS = 48, .insn_flags = CPU_MIPS64R6 | ASE_MSA, .mmu_type = MMU_TYPE_R4000, }, { .name = "Loongson-2E", .CP0_PRid = 0x6302, /* 64KB I-cache and d-cache. 4 way with 32 bit cache line size. */ .CP0_Config0 = (0x1<<17) | (0x1<<16) | (0x1<<11) | (0x1<<8) | (0x1<<5) | (0x1<<4) | (0x1<<1), /* Note: Config1 is only used internally, Loongson-2E has only Config0. */ .CP0_Config1 = (1 << CP0C1_FP) | (47 << CP0C1_MMU), .SYNCI_Step = 16, .CCRes = 2, .CP0_Status_rw_bitmask = 0x35D0FFFF, .CP1_fcr0 = (0x5 << FCR0_PRID) | (0x1 << FCR0_REV), .CP1_fcr31 = 0, .CP1_fcr31_rw_bitmask = 0xFF83FFFF, .SEGBITS = 40, .PABITS = 40, .insn_flags = CPU_LOONGSON2E, .mmu_type = MMU_TYPE_R4000, }, { .name = "Loongson-2F", .CP0_PRid = 0x6303, /* 64KB I-cache and d-cache. 4 way with 32 bit cache line size. */ .CP0_Config0 = (0x1<<17) | (0x1<<16) | (0x1<<11) | (0x1<<8) | (0x1<<5) | (0x1<<4) | (0x1<<1), /* Note: Config1 is only used internally, Loongson-2F has only Config0. */ .CP0_Config1 = (1 << CP0C1_FP) | (47 << CP0C1_MMU), .SYNCI_Step = 16, .CCRes = 2, .CP0_Status_rw_bitmask = 0xF5D0FF1F, /* Bits 7:5 not writable. */ .CP1_fcr0 = (0x5 << FCR0_PRID) | (0x1 << FCR0_REV), .CP1_fcr31 = 0, .CP1_fcr31_rw_bitmask = 0xFF83FFFF, .SEGBITS = 40, .PABITS = 40, .insn_flags = CPU_LOONGSON2F, .mmu_type = MMU_TYPE_R4000, }, { /* A generic CPU providing MIPS64 ASE DSP 2 features. FIXME: Eventually this should be replaced by a real CPU model. */ .name = "mips64dspr2", .CP0_PRid = 0x00010000, .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (0x2 << CP0C0_AT) | (MMU_TYPE_R4000 << CP0C0_MT), .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (63 << CP0C1_MMU) | (2 << CP0C1_IS) | (4 << CP0C1_IL) | (3 << CP0C1_IA) | (2 << CP0C1_DS) | (4 << CP0C1_DL) | (3 << CP0C1_DA) | (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP), .CP0_Config2 = MIPS_CONFIG2, .CP0_Config3 = MIPS_CONFIG3 | (1U << CP0C3_M) | (1 << CP0C3_DSP2P) | (1 << CP0C3_DSPP) | (1 << CP0C3_LPA), .CP0_LLAddr_rw_bitmask = 0, .CP0_LLAddr_shift = 0, .SYNCI_Step = 32, .CCRes = 2, .CP0_Status_rw_bitmask = 0x37FBFFFF, .CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_3D) | (1 << FCR0_PS) | (1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) | (1 << FCR0_S) | (0x00 << FCR0_PRID) | (0x0 << FCR0_REV), .CP1_fcr31 = 0, .CP1_fcr31_rw_bitmask = 0xFF83FFFF, .SEGBITS = 42, .PABITS = 36, .insn_flags = CPU_MIPS64R2 | ASE_DSP | ASE_DSPR2, .mmu_type = MMU_TYPE_R4000, }, #endif }; const int mips_defs_number = ARRAY_SIZE(mips_defs); void mips_cpu_list (FILE *f, fprintf_function cpu_fprintf) { int i; for (i = 0; i < ARRAY_SIZE(mips_defs); i++) { (*cpu_fprintf)(f, "MIPS '%s'\n", mips_defs[i].name); } } #ifndef CONFIG_USER_ONLY static void no_mmu_init (CPUMIPSState *env, const mips_def_t *def) { env->tlb->nb_tlb = 1; env->tlb->map_address = &no_mmu_map_address; } static void fixed_mmu_init (CPUMIPSState *env, const mips_def_t *def) { env->tlb->nb_tlb = 1; env->tlb->map_address = &fixed_mmu_map_address; } static void r4k_mmu_init (CPUMIPSState *env, const mips_def_t *def) { env->tlb->nb_tlb = 1 + ((def->CP0_Config1 >> CP0C1_MMU) & 63); env->tlb->map_address = &r4k_map_address; env->tlb->helper_tlbwi = r4k_helper_tlbwi; env->tlb->helper_tlbwr = r4k_helper_tlbwr; env->tlb->helper_tlbp = r4k_helper_tlbp; env->tlb->helper_tlbr = r4k_helper_tlbr; env->tlb->helper_tlbinv = r4k_helper_tlbinv; env->tlb->helper_tlbinvf = r4k_helper_tlbinvf; } static void mmu_init (CPUMIPSState *env, const mips_def_t *def) { MIPSCPU *cpu = mips_env_get_cpu(env); env->tlb = g_malloc0(sizeof(CPUMIPSTLBContext)); switch (def->mmu_type) { case MMU_TYPE_NONE: no_mmu_init(env, def); break; case MMU_TYPE_R4000: r4k_mmu_init(env, def); break; case MMU_TYPE_FMT: fixed_mmu_init(env, def); break; case MMU_TYPE_R3000: case MMU_TYPE_R6000: case MMU_TYPE_R8000: default: cpu_abort(CPU(cpu), "MMU type not supported\n"); } } #endif /* CONFIG_USER_ONLY */ static void fpu_init (CPUMIPSState *env, const mips_def_t *def) { int i; for (i = 0; i < MIPS_FPU_MAX; i++) env->fpus[i].fcr0 = def->CP1_fcr0; memcpy(&env->active_fpu, &env->fpus[0], sizeof(env->active_fpu)); } static void mvp_init (CPUMIPSState *env, const mips_def_t *def) { env->mvp = g_malloc0(sizeof(CPUMIPSMVPContext)); /* MVPConf1 implemented, TLB sharable, no gating storage support, programmable cache partitioning implemented, number of allocatable and sharable TLB entries, MVP has allocatable TCs, 2 VPEs implemented, 5 TCs implemented. */ env->mvp->CP0_MVPConf0 = (1U << CP0MVPC0_M) | (1 << CP0MVPC0_TLBS) | (0 << CP0MVPC0_GS) | (1 << CP0MVPC0_PCP) | // TODO: actually do 2 VPEs. // (1 << CP0MVPC0_TCA) | (0x1 << CP0MVPC0_PVPE) | // (0x04 << CP0MVPC0_PTC); (1 << CP0MVPC0_TCA) | (0x0 << CP0MVPC0_PVPE) | (0x00 << CP0MVPC0_PTC); #if !defined(CONFIG_USER_ONLY) /* Usermode has no TLB support */ env->mvp->CP0_MVPConf0 |= (env->tlb->nb_tlb << CP0MVPC0_PTLBE); #endif /* Allocatable CP1 have media extensions, allocatable CP1 have FP support, no UDI implemented, no CP2 implemented, 1 CP1 implemented. */ env->mvp->CP0_MVPConf1 = (1U << CP0MVPC1_CIM) | (1 << CP0MVPC1_CIF) | (0x0 << CP0MVPC1_PCX) | (0x0 << CP0MVPC1_PCP2) | (0x1 << CP0MVPC1_PCP1); } static void msa_reset(CPUMIPSState *env) { #ifdef CONFIG_USER_ONLY /* MSA access enabled */ env->CP0_Config5 |= 1 << CP0C5_MSAEn; env->CP0_Status |= (1 << CP0St_CU1) | (1 << CP0St_FR); #endif /* MSA CSR: - non-signaling floating point exception mode off (NX bit is 0) - Cause, Enables, and Flags are all 0 - round to nearest / ties to even (RM bits are 0) */ env->active_tc.msacsr = 0; restore_msa_fp_status(env); /* tininess detected after rounding.*/ set_float_detect_tininess(float_tininess_after_rounding, &env->active_tc.msa_fp_status); /* clear float_status exception flags */ set_float_exception_flags(0, &env->active_tc.msa_fp_status); /* clear float_status nan mode */ set_default_nan_mode(0, &env->active_tc.msa_fp_status); /* set proper signanling bit meaning ("1" means "quiet") */ set_snan_bit_is_one(0, &env->active_tc.msa_fp_status); }