提交: 0cff460de9e3417d248a5756b1cfbd9211657f94 - qemu (git)

Commit MetaInfo

• 修订版: 0cff460de9e3417d248a5756b1cfbd9211657f94 (tree)
• 时间: 2022-01-21 14:52:57
• 作者: LIU Zhiwei <zhiwei_liu@c-sk...>
• Commiter: Alistair Francis

Log Message

target/riscv: Alloc tcg global for cur_pm[mask|base]

Replace the array of pm_mask/pm_base with scalar variables.
Remove the cached array value in DisasContext.

Signed-off-by: LIU Zhiwei <[e-mail]>
Reviewed-by: Richard Henderson <[e-mail]>
Reviewed-by: Alistair Francis <[e-mail]>
Message-id: [e-mail]
Signed-off-by: Alistair Francis <[e-mail]>

更改概述

• modified: target/riscv/translate.c

差异

--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -38,8 +38,8 @@ static TCGv_i64 cpu_fpr[32]; /* assume F and D extensions */
 static TCGv load_res;
 static TCGv load_val;
 /* globals for PM CSRs */
-static TCGv pm_mask[4];
-static TCGv pm_base[4];
+static TCGv pm_mask;
+static TCGv pm_base;
 
 #include "exec/gen-icount.h"
 
@@ -109,8 +109,6 @@ typedef struct DisasContext {
     TCGv temp[4];
     /* PointerMasking extension */
     bool pm_enabled;
-    TCGv pm_mask;
-    TCGv pm_base;
 } DisasContext;
 
 static inline bool has_ext(DisasContext *ctx, uint32_t ext)
@@ -403,8 +401,8 @@ static TCGv gen_pm_adjust_address(DisasContext *s, TCGv src)
         return src;
     } else {
         temp = temp_new(s);
-        tcg_gen_andc_tl(temp, src, s->pm_mask);
-        tcg_gen_or_tl(temp, temp, s->pm_base);
+        tcg_gen_andc_tl(temp, src, pm_mask);
+        tcg_gen_or_tl(temp, temp, pm_base);
         return temp;
     }
 }
@@ -929,10 +927,6 @@ static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
     ctx->ntemp = 0;
     memset(ctx->temp, 0, sizeof(ctx->temp));
     ctx->pm_enabled = FIELD_EX32(tb_flags, TB_FLAGS, PM_ENABLED);
-    int priv = tb_flags & TB_FLAGS_PRIV_MMU_MASK;
-    ctx->pm_mask = pm_mask[priv];
-    ctx->pm_base = pm_base[priv];
-
     ctx->zero = tcg_constant_tl(0);
 }
 
@@ -1050,19 +1044,9 @@ void riscv_translate_init(void)
                              "load_res");
     load_val = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, load_val),
                              "load_val");
-#ifndef CONFIG_USER_ONLY
     /* Assign PM CSRs to tcg globals */
-    pm_mask[PRV_U] =
-      tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, upmmask), "upmmask");
-    pm_base[PRV_U] =
-      tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, upmbase), "upmbase");
-    pm_mask[PRV_S] =
-      tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, spmmask), "spmmask");
-    pm_base[PRV_S] =
-      tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, spmbase), "spmbase");
-    pm_mask[PRV_M] =
-      tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, mpmmask), "mpmmask");
-    pm_base[PRV_M] =
-      tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, mpmbase), "mpmbase");
-#endif
+    pm_mask = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, cur_pmmask),
+                                 "pmmask");
+    pm_base = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, cur_pmbase),
+                                 "pmbase");
 }