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[Qemu-devel] [PATCH 1/2] target/riscv: Split out mstatus_fs from tb_flag
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 1/2] target/riscv: Split out mstatus_fs from tb_flags during translation |
Date: |
Wed, 28 Mar 2018 10:22:32 +0800 |
We will want to track changes to mstatus_fs through the TB.
As there is nothing else in tb_flags at the moment, remove
the variable from DisasContext.
Signed-off-by: Richard Henderson <address@hidden>
---
target/riscv/cpu.h | 6 +++---
target/riscv/translate.c | 10 +++++-----
2 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 41e06ac0f9..d201dd3e90 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -269,8 +269,8 @@ void QEMU_NORETURN do_raise_exception_err(CPURISCVState
*env,
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_MMU_MASK 3
+#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)
@@ -278,7 +278,7 @@ 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
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 808eab7f50..a30724aa90 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -43,7 +43,7 @@ typedef struct DisasContext {
target_ulong pc;
target_ulong next_pc;
uint32_t opcode;
- uint32_t flags;
+ uint32_t mstatus_fs;
uint32_t mem_idx;
int singlestep_enabled;
int bstate;
@@ -665,7 +665,7 @@ 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;
}
@@ -695,7 +695,7 @@ 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;
}
@@ -986,7 +986,7 @@ 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;
}
@@ -1862,8 +1862,8 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock
*tb)
ctx.tb = tb;
ctx.bstate = BS_NONE;
- ctx.flags = tb->flags;
ctx.mem_idx = tb->flags & TB_FLAGS_MMU_MASK;
+ ctx.mstatus_fs = tb->flags & TB_FLAGS_MSTATUS_FS;
ctx.frm = -1; /* unknown rounding mode */
num_insns = 0;
--
2.14.3