From: Jiajie Chen <c...@jia.je> Add LA64 and VA32(32-bit Virtual Address) to DisasContext to allow the translator to reject doubleword instructions in LA32 mode for example.
Signed-off-by: Jiajie Chen <c...@jia.je> Reviewed-by: Richard Henderson <richard.hender...@linaro.org> Signed-off-by: Song Gao <gaos...@loongson.cn> Message-ID: <20230822032724.1353391-5-gaos...@loongson.cn> --- target/loongarch/cpu.h | 13 +++++++++++++ target/loongarch/translate.h | 2 ++ target/loongarch/translate.c | 3 +++ 3 files changed, 18 insertions(+) diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index b8af491041..72109095e4 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -432,6 +432,17 @@ static inline bool is_la64(CPULoongArchState *env) return FIELD_EX32(env->cpucfg[1], CPUCFG1, ARCH) == CPUCFG1_ARCH_LA64; } +static inline bool is_va32(CPULoongArchState *env) +{ + /* VA32 if !LA64 or VA32L[1-3] */ + bool va32 = !is_la64(env); + uint64_t plv = FIELD_EX64(env->CSR_CRMD, CSR_CRMD, PLV); + if (plv >= 1 && (FIELD_EX64(env->CSR_MISC, CSR_MISC, VA32) & (1 << plv))) { + va32 = true; + } + return va32; +} + /* * LoongArch CPUs hardware flags. */ @@ -439,6 +450,7 @@ static inline bool is_la64(CPULoongArchState *env) #define HW_FLAGS_CRMD_PG R_CSR_CRMD_PG_MASK /* 0x10 */ #define HW_FLAGS_EUEN_FPE 0x04 #define HW_FLAGS_EUEN_SXE 0x08 +#define HW_FLAGS_VA32 0x20 static inline void cpu_get_tb_cpu_state(CPULoongArchState *env, vaddr *pc, uint64_t *cs_base, uint32_t *flags) @@ -448,6 +460,7 @@ static inline void cpu_get_tb_cpu_state(CPULoongArchState *env, vaddr *pc, *flags = env->CSR_CRMD & (R_CSR_CRMD_PLV_MASK | R_CSR_CRMD_PG_MASK); *flags |= FIELD_EX64(env->CSR_EUEN, CSR_EUEN, FPE) * HW_FLAGS_EUEN_FPE; *flags |= FIELD_EX64(env->CSR_EUEN, CSR_EUEN, SXE) * HW_FLAGS_EUEN_SXE; + *flags |= is_va32(env) * HW_FLAGS_VA32; } void loongarch_cpu_list(void); diff --git a/target/loongarch/translate.h b/target/loongarch/translate.h index 7f60090580..b6fa5df82d 100644 --- a/target/loongarch/translate.h +++ b/target/loongarch/translate.h @@ -33,6 +33,8 @@ typedef struct DisasContext { uint16_t plv; int vl; /* Vector length */ TCGv zero; + bool la64; /* LoongArch64 mode */ + bool va32; /* 32-bit virtual address */ } DisasContext; void generate_exception(DisasContext *ctx, int excp); diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c index 3146a2d4ac..ac847745df 100644 --- a/target/loongarch/translate.c +++ b/target/loongarch/translate.c @@ -119,6 +119,9 @@ static void loongarch_tr_init_disas_context(DisasContextBase *dcbase, ctx->vl = LSX_LEN; } + ctx->la64 = is_la64(env); + ctx->va32 = (ctx->base.tb->flags & HW_FLAGS_VA32) != 0; + ctx->zero = tcg_constant_tl(0); } -- 2.41.0