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RISC-V: Split out mstatus_fs from tb_flags

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Signed-off-by: Michael Clark <mjc@sifive.com>
Reviewed-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This commit is contained in:
Richard Henderson 2019-01-14 23:57:50 +00:00 committed by Palmer Dabbelt
parent 22c5f44651
commit 83a7171990
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GPG Key ID: EF4CA1502CCBAB41
2 changed files with 8 additions and 8 deletions
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4
target/riscv/cpu.h
View File

@ -276,7 +276,7 @@ target_ulong cpu_riscv_get_fflags(CPURISCVState *env);
void cpu_riscv_set_fflags(CPURISCVState *env, target_ulong);
#define TB_FLAGS_MMU_MASK 3
#define TB_FLAGS_FP_ENABLE MSTATUS_FS
#define TB_FLAGS_MSTATUS_FS MSTATUS_FS
static inline void cpu_get_tb_cpu_state(CPURISCVState *env, target_ulong *pc,
target_ulong *cs_base, uint32_t *flags)
@ -284,7 +284,7 @@ static inline void cpu_get_tb_cpu_state(CPURISCVState *env, target_ulong *pc,
*pc = env->pc;
*cs_base = 0;
#ifdef CONFIG_USER_ONLY
*flags = TB_FLAGS_FP_ENABLE;
*flags = TB_FLAGS_MSTATUS_FS;
#else
*flags = cpu_mmu_index(env, 0) | (env->mstatus & MSTATUS_FS);
#endif

10
target/riscv/translate.c
View File

@ -44,7 +44,7 @@ typedef struct DisasContext {
/* pc_succ_insn points to the instruction following base.pc_next */
target_ulong pc_succ_insn;
uint32_t opcode;
uint32_t flags;
uint32_t mstatus_fs;
uint32_t mem_idx;
/* Remember the rounding mode encoded in the previous fp instruction,
which we have already installed into env->fp_status. Or -1 for
@ -656,7 +656,7 @@ static void gen_fp_load(DisasContext *ctx, uint32_t opc, int rd,
{
TCGv t0;
if (!(ctx->flags & TB_FLAGS_FP_ENABLE)) {
if (ctx->mstatus_fs == 0) {
gen_exception_illegal(ctx);
return;
}
@ -686,7 +686,7 @@ static void gen_fp_store(DisasContext *ctx, uint32_t opc, int rs1,
{
TCGv t0;
if (!(ctx->flags & TB_FLAGS_FP_ENABLE)) {
if (ctx->mstatus_fs == 0) {
gen_exception_illegal(ctx);
return;
}
@ -945,7 +945,7 @@ static void gen_fp_arith(DisasContext *ctx, uint32_t opc, int rd,
{
TCGv t0 = NULL;
if (!(ctx->flags & TB_FLAGS_FP_ENABLE)) {
if (ctx->mstatus_fs == 0) {
goto do_illegal;
}
@ -1818,8 +1818,8 @@ static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
DisasContext *ctx = container_of(dcbase, DisasContext, base);
ctx->pc_succ_insn = ctx->base.pc_first;
ctx->flags = ctx->base.tb->flags;
ctx->mem_idx = ctx->base.tb->flags & TB_FLAGS_MMU_MASK;
ctx->mstatus_fs = ctx->base.tb->flags & TB_FLAGS_MSTATUS_FS;
ctx->frm = -1; /* unknown rounding mode */
}