From: Aleksandar Markovic <aleksandar.marko...@imgtec.com> This patch implements read and write access rules for Mips floating point control and status register (FCR31). The change can be divided into following parts:
- Add preprocessor constants for all bits of FCR31 and related masks for its subfields. - Add correspondant fields that will keep FCR31's R/W bitmask in procesor definitions and processor float_status structure. - Add appropriate value for FCR31's R/W bitmask for each supported processor. - Modify handling of CFC1 and CTC1 instructions (cases 25, 26, 28) so that they utilize newly-defind constants. This is just a cosmetic change, to make the code more readable, and to avoid usage of hardcoded constants. - Modify handling of CTC1 (case 31) instruction to use FCR31's R/W bitmask. - Modify handling user mode executables for Mips, in relation to the bit EF_MIPS_NAN2008 from ELF header, that is in turn related to reading and writing to FCR31. - Modify gdb behavior in relation to FCR31. Signed-off-by: Thomas Schwinge <tho...@codesourcery.com> Signed-off-by: Maciej W. Rozycki <ma...@codesourcery.com> Signed-off-by: Aleksandar Markovic <aleksandar.marko...@imgtec.com> --- linux-user/main.c | 14 ++++++++ target-mips/cpu.h | 75 +++++++++++++++++++++++++++++++++++++++++-- target-mips/gdbstub.c | 8 ++--- target-mips/op_helper.c | 76 +++++++++++++++++++++++++++++++------------- target-mips/translate.c | 9 ++---- target-mips/translate_init.c | 54 +++++++++++++++++++++++++++++++ 6 files changed, 199 insertions(+), 37 deletions(-) diff --git a/linux-user/main.c b/linux-user/main.c index 5f3ec97..cc21057 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -4608,6 +4608,20 @@ int main(int argc, char **argv, char **envp) if (regs->cp0_epc & 1) { env->hflags |= MIPS_HFLAG_M16; } + if (((info->elf_flags & EF_MIPS_NAN2008) != 0) != + ((env->active_fpu.fcr31 & (1 << FCR31_NAN2008)) != 0)) { + if ((env->active_fpu.fcr31_rw_bitmask & + (1 << FCR31_NAN2008)) == 0) { + fprintf(stderr, "ELF binary's NaN mode not supported by CPU\n"); + exit(1); + } + if ((info->elf_flags & EF_MIPS_NAN2008) != 0) { + env->active_fpu.fcr31 |= (1 << FCR31_NAN2008); + } else { + env->active_fpu.fcr31 &= ~(1 << FCR31_NAN2008); + } + restore_snan_bit_mode(env); + } } #elif defined(TARGET_OPENRISC) { diff --git a/target-mips/cpu.h b/target-mips/cpu.h index 6478420..bbf81c7 100644 --- a/target-mips/cpu.h +++ b/target-mips/cpu.h @@ -110,9 +110,71 @@ struct CPUMIPSFPUContext { #define FCR0_PRID 8 #define FCR0_REV 0 /* fcsr */ + uint32_t fcr31_rw_bitmask; uint32_t fcr31; -#define FCR31_ABS2008 19 -#define FCR31_NAN2008 18 +#define FCR31_ROUNDING_MODE_0 0 +#define FCR31_ROUNDING_MODE_1 1 +#define FCR31_FLAGS_INEXACT 2 +#define FCR31_FLAGS_UNDERFLOW 3 +#define FCR31_FLAGS_OVERFLOW 4 +#define FCR31_FLAGS_DIV0 5 +#define FCR31_FLAGS_INVALID 6 +#define FCR31_ENABLE_INEXACT 7 +#define FCR31_ENABLE_UNDERFLOW 8 +#define FCR31_ENABLE_OVERFLOW 9 +#define FCR31_ENABLE_DIV0 10 +#define FCR31_ENABLE_INVALID 11 +#define FCR31_CAUSE_INEXACT 12 +#define FCR31_CAUSE_UNDERFLOW 13 +#define FCR31_CAUSE_OVERFLOW 14 +#define FCR31_CAUSE_DIV0 15 +#define FCR31_CAUSE_INVALID 16 +#define FCR31_CAUSE_UNIMPLEMENTED 17 +#define FCR31_NAN2008 18 +#define FCR31_ABS2008 19 +#define FCR31_0 20 +#define FCR31_IMPL_0 21 +#define FCR31_IMPL_1 22 +#define FCR31_FCC_COND 23 +#define FCR31_FS 24 +#define FCR31_FCC_COND_1 25 +#define FCR31_FCC_COND_2 26 +#define FCR31_FCC_COND_3 27 +#define FCR31_FCC_COND_4 28 +#define FCR31_FCC_COND_5 29 +#define FCR31_FCC_COND_6 30 +#define FCR31_FCC_COND_7 31 +#define FCR31_ROUNDING_MODE_MASK ((1 << FCR31_ROUNDING_MODE_0) | \ + (1 << FCR31_ROUNDING_MODE_1)) +#define FCR31_FLAGS_MASK ((1 << FCR31_FLAGS_INEXACT) | \ + (1 << FCR31_FLAGS_UNDERFLOW) | \ + (1 << FCR31_FLAGS_OVERFLOW) | \ + (1 << FCR31_FLAGS_DIV0) | \ + (1 << FCR31_FLAGS_INVALID)) +#define FCR31_ENABLE_MASK ((1 << FCR31_ENABLE_INEXACT) | \ + (1 << FCR31_ENABLE_UNDERFLOW) | \ + (1 << FCR31_ENABLE_OVERFLOW) | \ + (1 << FCR31_ENABLE_DIV0) | \ + (1 << FCR31_ENABLE_INVALID)) +#define FCR31_CAUSE_MASK ((1 << FCR31_CAUSE_INEXACT) | \ + (1 << FCR31_CAUSE_UNDERFLOW) | \ + (1 << FCR31_CAUSE_OVERFLOW) | \ + (1 << FCR31_CAUSE_DIV0) | \ + (1 << FCR31_CAUSE_INVALID) | \ + (1 << FCR31_CAUSE_UNIMPLEMENTED)) +#define FCR31_IEEE2008_MASK ((1 << FCR31_NAN2008) | \ + (1 << FCR31_ABS2008)) +#define FCR31_IMPL_MASK ((1 << FCR31_IMPL_0) | \ + (1 << FCR31_IMPL_1)) +#define FCR31_FCC_MASK ((1 << FCR31_FCC_COND) | \ + (1 << FCR31_FCC_COND_1) | \ + (1 << FCR31_FCC_COND_2) | \ + (1 << FCR31_FCC_COND_3) | \ + (1 << FCR31_FCC_COND_4) | \ + (1 << FCR31_FCC_COND_5) | \ + (1 << FCR31_FCC_COND_6) | \ + (1 << FCR31_FCC_COND_7)) +#define FCR31_FS_MASK (1 << FCR31_FS) #define SET_FP_COND(num,env) do { ((env).fcr31) |= ((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0) #define CLEAR_FP_COND(num,env) do { ((env).fcr31) &= ~((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0) #define GET_FP_COND(env) ((((env).fcr31 >> 24) & 0xfe) | (((env).fcr31 >> 23) & 0x1)) @@ -813,14 +875,21 @@ static inline void restore_rounding_mode(CPUMIPSState *env) static inline void restore_flush_mode(CPUMIPSState *env) { - set_flush_to_zero((env->active_fpu.fcr31 & (1 << 24)) != 0, + set_flush_to_zero((env->active_fpu.fcr31 & (1 << FCR31_FS)) != 0, &env->active_fpu.fp_status); } +static inline void restore_snan_bit_mode(CPUMIPSState *env) +{ + set_snan_bit_is_one(!((env->active_fpu.fcr31 & (1 << FCR31_NAN2008)) != 0), + &env->active_fpu.fp_status); +} + static inline void restore_fp_status(CPUMIPSState *env) { restore_rounding_mode(env); restore_flush_mode(env); + restore_snan_bit_mode(env); } static inline void restore_msa_fp_status(CPUMIPSState *env) diff --git a/target-mips/gdbstub.c b/target-mips/gdbstub.c index b0b4a32..c407aa9 100644 --- a/target-mips/gdbstub.c +++ b/target-mips/gdbstub.c @@ -89,11 +89,9 @@ int mips_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) if (env->CP0_Config1 & (1 << CP0C1_FP) && n >= 38 && n < 72) { switch (n) { case 70: - env->active_fpu.fcr31 = tmp & 0xFF83FFFF; - /* set rounding mode */ - restore_rounding_mode(env); - /* set flush-to-zero mode */ - restore_flush_mode(env); + env->active_fpu.fcr31 = (tmp & env->active_fpu.fcr31_rw_bitmask) | + (env->active_fpu.fcr31 & !(env->active_fpu.fcr31_rw_bitmask)); + restore_fp_status(env); break; case 71: /* FIR is read-only. Ignore writes. */ diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c index 0d1e959..cb890bc 100644 --- a/target-mips/op_helper.c +++ b/target-mips/op_helper.c @@ -2490,15 +2490,23 @@ target_ulong helper_cfc1(CPUMIPSState *env, uint32_t reg) } break; case 25: - arg1 = ((env->active_fpu.fcr31 >> 24) & 0xfe) | ((env->active_fpu.fcr31 >> 23) & 0x1); + /* read from Floating Point Condition Codes Register (FCCR) */ + arg1 = ((env->active_fpu.fcr31 >> 24) & 0xfe) | + ((env->active_fpu.fcr31 >> 23) & 0x1); break; case 26: - arg1 = env->active_fpu.fcr31 & 0x0003f07c; + /* read from Floating Point Enables Register (FENR) */ + arg1 = (env->active_fpu.fcr31 & FCR31_CAUSE_MASK) | + (env->active_fpu.fcr31 & FCR31_FLAGS_MASK); break; case 28: - arg1 = (env->active_fpu.fcr31 & 0x00000f83) | ((env->active_fpu.fcr31 >> 22) & 0x4); + /* read from Floating Point Enables Register (FENR) */ + arg1 = (env->active_fpu.fcr31 & FCR31_ROUNDING_MODE_MASK) | + ((env->active_fpu.fcr31 >> 22) & 0x4) | + (env->active_fpu.fcr31 & FCR31_ENABLE_MASK); break; default: + /* read from Floating Point Control and Status Register (FCSR) */ arg1 = (int32_t)env->active_fpu.fcr31; break; } @@ -2558,42 +2566,66 @@ void helper_ctc1(CPUMIPSState *env, target_ulong arg1, uint32_t fs, uint32_t rt) } break; case 25: + /* write to Floating Point Condition Codes Register (FCCR) */ if ((env->insn_flags & ISA_MIPS32R6) || (arg1 & 0xffffff00)) { return; } - env->active_fpu.fcr31 = (env->active_fpu.fcr31 & 0x017fffff) | ((arg1 & 0xfe) << 24) | - ((arg1 & 0x1) << 23); + env->active_fpu.fcr31 = + (env->active_fpu.fcr31 & FCR31_ROUNDING_MODE_MASK) | + (env->active_fpu.fcr31 & FCR31_FLAGS_MASK) | + (env->active_fpu.fcr31 & FCR31_ENABLE_MASK) | + (env->active_fpu.fcr31 & FCR31_CAUSE_MASK) | + (env->active_fpu.fcr31 & FCR31_IEEE2008_MASK) | + (env->active_fpu.fcr31 & FCR31_IMPL_MASK) | + (env->active_fpu.fcr31 & FCR31_FCC_MASK) | + ((arg1 & 0x1) << 23) | + (env->active_fpu.fcr31 & FCR31_FS_MASK) | + ((arg1 & 0xfe) << 24); break; case 26: - if (arg1 & 0x007c0000) + /* write to Floating Point Exceptions Register (FEXR) */ + if (arg1 & 0x007c0000) { return; - env->active_fpu.fcr31 = (env->active_fpu.fcr31 & 0xfffc0f83) | (arg1 & 0x0003f07c); + } + env->active_fpu.fcr31 = + (env->active_fpu.fcr31 & FCR31_ROUNDING_MODE_MASK) | + (arg1 & FCR31_FLAGS_MASK) | + (env->active_fpu.fcr31 & FCR31_ENABLE_MASK) | + (arg1 & FCR31_CAUSE_MASK) | + (env->active_fpu.fcr31 & FCR31_IEEE2008_MASK) | + (env->active_fpu.fcr31 & FCR31_IMPL_MASK) | + (env->active_fpu.fcr31 & FCR31_FCC_MASK) | + (env->active_fpu.fcr31 & FCR31_FS_MASK); break; case 28: - if (arg1 & 0x007c0000) + /* write to Floating Point Enables Register (FENR) */ + if (arg1 & 0x007c0000) { return; - env->active_fpu.fcr31 = (env->active_fpu.fcr31 & 0xfefff07c) | (arg1 & 0x00000f83) | - ((arg1 & 0x4) << 22); + } + env->active_fpu.fcr31 = + (arg1 & FCR31_ROUNDING_MODE_MASK) | + (env->active_fpu.fcr31 & FCR31_FLAGS_MASK) | + (arg1 & FCR31_ENABLE_MASK) | + (env->active_fpu.fcr31 & FCR31_CAUSE_MASK) | + (env->active_fpu.fcr31 & FCR31_IEEE2008_MASK) | + (env->active_fpu.fcr31 & FCR31_IMPL_MASK) | + (env->active_fpu.fcr31 & FCR31_FCC_MASK) | + ((arg1 & 0x4) << 22); break; case 31: - if (env->insn_flags & ISA_MIPS32R6) { - uint32_t mask = 0xfefc0000; - env->active_fpu.fcr31 = (arg1 & ~mask) | - (env->active_fpu.fcr31 & mask); - } else if (!(arg1 & 0x007c0000)) { - env->active_fpu.fcr31 = arg1; - } + /* write to Floating Point Control and Status Register (FCSR) */ + env->active_fpu.fcr31 = (arg1 & env->active_fpu.fcr31_rw_bitmask) | + (env->active_fpu.fcr31 & ~(env->active_fpu.fcr31_rw_bitmask)); break; default: return; } - /* set rounding mode */ - restore_rounding_mode(env); - /* set flush-to-zero mode */ - restore_flush_mode(env); + restore_fp_status(env); set_float_exception_flags(0, &env->active_fpu.fp_status); - if ((GET_FP_ENABLE(env->active_fpu.fcr31) | 0x20) & GET_FP_CAUSE(env->active_fpu.fcr31)) + if ((GET_FP_ENABLE(env->active_fpu.fcr31) | 0x20) & + GET_FP_CAUSE(env->active_fpu.fcr31)) { do_raise_exception(env, EXCP_FPE, GETPC()); + } } int ieee_ex_to_mips(int xcpt) diff --git a/target-mips/translate.c b/target-mips/translate.c index 52fc2bb..aaee871 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -20228,12 +20228,8 @@ void cpu_state_reset(CPUMIPSState *env) env->CP0_PageGrain_rw_bitmask = env->cpu_model->CP0_PageGrain_rw_bitmask; env->CP0_PageGrain = env->cpu_model->CP0_PageGrain; env->active_fpu.fcr0 = env->cpu_model->CP1_fcr0; + env->active_fpu.fcr31_rw_bitmask = env->cpu_model->CP1_fcr31_rw_bitmask; env->active_fpu.fcr31 = env->cpu_model->CP1_fcr31; - if ((env->active_fpu.fcr31 >> FCR31_NAN2008) & 1) { - set_snan_bit_is_one(0, &env->active_fpu.fp_status); - } else { - set_snan_bit_is_one(1, &env->active_fpu.fp_status); - } env->msair = env->cpu_model->MSAIR; env->insn_flags = env->cpu_model->insn_flags; @@ -20343,8 +20339,7 @@ void cpu_state_reset(CPUMIPSState *env) } compute_hflags(env); - restore_rounding_mode(env); - restore_flush_mode(env); + restore_fp_status(env); restore_pamask(env); cs->exception_index = EXCP_NONE; diff --git a/target-mips/translate_init.c b/target-mips/translate_init.c index a37d8bb..1857990 100644 --- a/target-mips/translate_init.c +++ b/target-mips/translate_init.c @@ -84,6 +84,7 @@ struct mips_def_t { int32_t CP0_TCStatus_rw_bitmask; int32_t CP0_SRSCtl; int32_t CP1_fcr0; + int32_t CP1_fcr31_rw_bitmask; int32_t CP1_fcr31; int32_t MSAIR; int32_t SEGBITS; @@ -273,6 +274,10 @@ static const mips_def_t mips_defs[] = .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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R2 | ASE_MIPS16, @@ -303,6 +308,10 @@ static const mips_def_t mips_defs[] = (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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .CP0_SRSCtl = (0xf << CP0SRSCtl_HSS), .CP0_SRSConf0_rw_bitmask = 0x3fffffff, .CP0_SRSConf0 = (1U << CP0SRSC0_M) | (0x3fe << CP0SRSC0_SRS3) | @@ -343,6 +352,10 @@ static const mips_def_t mips_defs[] = .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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R2 | ASE_MIPS16 | ASE_DSP | ASE_DSPR2, @@ -427,6 +440,9 @@ static const mips_def_t mips_defs[] = (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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 32, .PABITS = 40, .insn_flags = CPU_MIPS32R5 | ASE_MSA, @@ -465,6 +481,9 @@ static const mips_def_t mips_defs[] = (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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 32, .PABITS = 32, .insn_flags = CPU_MIPS32R6 | ASE_MICROMIPS, @@ -485,6 +504,10 @@ static const mips_def_t mips_defs[] = .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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + (1 << FCR31_FCC_COND) | FCR31_FS_MASK, .SEGBITS = 40, .PABITS = 36, .insn_flags = CPU_MIPS3, @@ -503,6 +526,10 @@ static const mips_def_t mips_defs[] = .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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 40, .PABITS = 32, .insn_flags = CPU_VR54XX, @@ -548,6 +575,10 @@ static const mips_def_t mips_defs[] = /* 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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 42, .PABITS = 36, .insn_flags = CPU_MIPS64, @@ -575,6 +606,10 @@ static const mips_def_t mips_defs[] = .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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 40, .PABITS = 36, .insn_flags = CPU_MIPS64 | ASE_MIPS3D, @@ -601,6 +636,10 @@ static const mips_def_t mips_defs[] = .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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 42, .PABITS = 36, .insn_flags = CPU_MIPS64R2 | ASE_MIPS3D, @@ -686,6 +725,9 @@ static const mips_def_t mips_defs[] = (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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 48, .PABITS = 48, .insn_flags = CPU_MIPS64R6 | ASE_MSA, @@ -704,6 +746,10 @@ static const mips_def_t mips_defs[] = .CCRes = 2, .CP0_Status_rw_bitmask = 0x35D0FFFF, .CP1_fcr0 = (0x5 << FCR0_PRID) | (0x1 << FCR0_REV), + .CP1_fcr31 = 0, + .CP1_fcr31_rw_bitmask = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 40, .PABITS = 40, .insn_flags = CPU_LOONGSON2E, @@ -722,6 +768,10 @@ static const mips_def_t mips_defs[] = .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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 40, .PABITS = 40, .insn_flags = CPU_LOONGSON2F, @@ -749,6 +799,10 @@ static const mips_def_t mips_defs[] = .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 = FCR31_ROUNDING_MODE_MASK | FCR31_FLAGS_MASK | + FCR31_ENABLE_MASK | FCR31_CAUSE_MASK | + FCR31_FCC_MASK | FCR31_FS_MASK, .SEGBITS = 42, .PABITS = 36, .insn_flags = CPU_MIPS64R2 | ASE_DSP | ASE_DSPR2, -- 1.9.1