diff mbox series

[v2,13/50] target/i386: Assert LMA for x86_64 user-only

Message ID 20210514151342.384376-14-richard.henderson@linaro.org
State Superseded
Headers show
Series target/i386 translate cleanups | expand

Commit Message

Richard Henderson May 14, 2021, 3:13 p.m. UTC 
LMA is a pre-requisite for CODE64, so there is no way to disable it
for x86_64-linux-user, and there is no way to enable it for i386.

Since we're adding an accessor macro, pull the value directly out
of flags when we're not assuming a constant.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 target/i386/tcg/translate.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

-- 
2.25.1

Comments

Paolo Bonzini May 18, 2021, 9:21 a.m. UTC | #1 
On 14/05/21 17:13, Richard Henderson wrote:
> LMA is a pre-requisite for CODE64, so there is no way to disable it

> for x86_64-linux-user, and there is no way to enable it for i386.

> 

> Since we're adding an accessor macro, pull the value directly out

> of flags when we're not assuming a constant.

> 

> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

> ---

>   target/i386/tcg/translate.c | 10 +++++-----

>   1 file changed, 5 insertions(+), 5 deletions(-)


Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
diff mbox series

Patch

diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index e3907f9066..9c8a405694 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -99,7 +99,6 @@  typedef struct DisasContext {
 #endif
 
 #ifdef TARGET_X86_64
-    int lma;    /* long mode active */
     int rex_x, rex_b;
 #endif
     int vex_l;  /* vex vector length */
@@ -164,10 +163,13 @@  typedef struct DisasContext {
 #endif
 #if !defined(TARGET_X86_64)
 #define CODE64(S) false
+#define LMA(S)    false
 #elif defined(CONFIG_USER_ONLY)
 #define CODE64(S) true
+#define LMA(S)    true
 #else
 #define CODE64(S) (((S)->flags & HF_CS64_MASK) != 0)
+#define LMA(S)    (((S)->flags & HF_LMA_MASK) != 0)
 #endif
 
 static void gen_eob(DisasContext *s);
@@ -7295,7 +7297,7 @@  static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
         } else {
             gen_helper_sysret(cpu_env, tcg_const_i32(dflag - 1));
             /* condition codes are modified only in long mode */
-            if (s->lma) {
+            if (LMA(s)) {
                 set_cc_op(s, CC_OP_EFLAGS);
             }
             /* TF handling for the sysret insn is different. The TF bit is
@@ -8503,6 +8505,7 @@  static void i386_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu)
     g_assert(CODE32(dc) == ((flags & HF_CS32_MASK) != 0));
     g_assert(CODE64(dc) == ((flags & HF_CS64_MASK) != 0));
     g_assert(SS32(dc) == ((flags & HF_SS32_MASK) != 0));
+    g_assert(LMA(dc) == ((flags & HF_LMA_MASK) != 0));
 
     dc->addseg = (flags >> HF_ADDSEG_SHIFT) & 1;
     dc->f_st = 0;
@@ -8521,9 +8524,6 @@  static void i386_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu)
     dc->cpuid_ext3_features = env->features[FEAT_8000_0001_ECX];
     dc->cpuid_7_0_ebx_features = env->features[FEAT_7_0_EBX];
     dc->cpuid_xsave_features = env->features[FEAT_XSAVE];
-#ifdef TARGET_X86_64
-    dc->lma = (flags >> HF_LMA_SHIFT) & 1;
-#endif
     dc->jmp_opt = !(dc->tf || dc->base.singlestep_enabled ||
                     (flags & HF_INHIBIT_IRQ_MASK));
     /* Do not optimize repz jumps at all in icount mode, because