[PATCH v2 05/23] target/i386: Create gen_update_eip_cur

[Richard Henderson]

Like gen_update_cc_op, sync EIP before doing something
that could raise an exception.  Replace all gen_jmp_im
that use s->base.pc_next.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/i386/tcg/translate.c | 52 ++++++++++++++++++++-----------------
 1 file changed, 28 insertions(+), 24 deletions(-)

diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index 0210382f77..83cb925571 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -511,10 +511,14 @@ static inline void gen_op_st_rm_T0_A0(DisasContext *s, 
int idx, int d)
     }
 }
 
-static inline void gen_jmp_im(DisasContext *s, target_ulong pc)
+static void gen_jmp_im(DisasContext *s, target_ulong pc)
 {
-    tcg_gen_movi_tl(s->tmp0, pc);
-    gen_op_jmp_v(s->tmp0);
+    gen_op_jmp_v(tcg_constant_tl(pc));
+}
+
+static void gen_update_eip_cur(DisasContext *s)
+{
+    gen_jmp_im(s, s->base.pc_next - s->cs_base);
 }
 
 /* Compute SEG:REG into A0.  SEG is selected from the override segment
@@ -703,7 +707,7 @@ static bool gen_check_io(DisasContext *s, MemOp ot, 
TCGv_i32 port,
         target_ulong next_eip = s->pc - s->cs_base;
 
         gen_update_cc_op(s);
-        gen_jmp_im(s, cur_eip);
+        gen_update_eip_cur(s);
         if (s->prefix & (PREFIX_REPZ | PREFIX_REPNZ)) {
             svm_flags |= SVM_IOIO_REP_MASK;
         }
@@ -1335,7 +1339,7 @@ static void gen_helper_fp_arith_STN_ST0(int op, int opreg)
 static void gen_exception(DisasContext *s, int trapno)
 {
     gen_update_cc_op(s);
-    gen_jmp_im(s, s->base.pc_next - s->cs_base);
+    gen_update_eip_cur(s);
     gen_helper_raise_exception(cpu_env, tcg_const_i32(trapno));
     s->base.is_jmp = DISAS_NORETURN;
 }
@@ -2605,7 +2609,7 @@ static void gen_unknown_opcode(CPUX86State *env, 
DisasContext *s)
 static void gen_interrupt(DisasContext *s, int intno)
 {
     gen_update_cc_op(s);
-    gen_jmp_im(s, s->base.pc_next - s->cs_base);
+    gen_update_eip_cur(s);
     gen_helper_raise_interrupt(cpu_env, tcg_constant_i32(intno),
                                tcg_constant_i32(s->pc - s->base.pc_next));
     s->base.is_jmp = DISAS_NORETURN;
@@ -6796,7 +6800,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
     do_lret:
         if (PE(s) && !VM86(s)) {
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             gen_helper_lret_protected(cpu_env, tcg_const_i32(dflag - 1),
                                       tcg_const_i32(val));
         } else {
@@ -7292,7 +7296,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
         }
         if (prefixes & PREFIX_REPZ) {
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             gen_helper_pause(cpu_env, tcg_const_i32(s->pc - s->base.pc_next));
             s->base.is_jmp = DISAS_NORETURN;
         }
@@ -7318,7 +7322,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
         if (CODE64(s))
             goto illegal_op;
         gen_update_cc_op(s);
-        gen_jmp_im(s, s->base.pc_next - s->cs_base);
+        gen_update_eip_cur(s);
         gen_helper_into(cpu_env, tcg_const_i32(s->pc - s->base.pc_next));
         break;
 #ifdef WANT_ICEBP
@@ -7425,7 +7429,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
     case 0x132: /* rdmsr */
         if (check_cpl0(s)) {
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             if (b & 2) {
                 gen_helper_rdmsr(cpu_env);
             } else {
@@ -7437,7 +7441,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
         break;
     case 0x131: /* rdtsc */
         gen_update_cc_op(s);
-        gen_jmp_im(s, s->base.pc_next - s->cs_base);
+        gen_update_eip_cur(s);
         if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
             gen_io_start();
         }
@@ -7448,7 +7452,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
         break;
     case 0x133: /* rdpmc */
         gen_update_cc_op(s);
-        gen_jmp_im(s, s->base.pc_next - s->cs_base);
+        gen_update_eip_cur(s);
         gen_helper_rdpmc(cpu_env);
         s->base.is_jmp = DISAS_NORETURN;
         break;
@@ -7478,7 +7482,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
     case 0x105: /* syscall */
         /* XXX: is it usable in real mode ? */
         gen_update_cc_op(s);
-        gen_jmp_im(s, s->base.pc_next - s->cs_base);
+        gen_update_eip_cur(s);
         gen_helper_syscall(cpu_env, tcg_const_i32(s->pc - s->base.pc_next));
         /* TF handling for the syscall insn is different. The TF bit is  
checked
            after the syscall insn completes. This allows #DB to not be
@@ -7504,13 +7508,13 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
 #endif
     case 0x1a2: /* cpuid */
         gen_update_cc_op(s);
-        gen_jmp_im(s, s->base.pc_next - s->cs_base);
+        gen_update_eip_cur(s);
         gen_helper_cpuid(cpu_env);
         break;
     case 0xf4: /* hlt */
         if (check_cpl0(s)) {
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             gen_helper_hlt(cpu_env, tcg_const_i32(s->pc - s->base.pc_next));
             s->base.is_jmp = DISAS_NORETURN;
         }
@@ -7607,7 +7611,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
                 goto illegal_op;
             }
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             tcg_gen_mov_tl(s->A0, cpu_regs[R_EAX]);
             gen_extu(s->aflag, s->A0);
             gen_add_A0_ds_seg(s);
@@ -7619,7 +7623,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
                 goto illegal_op;
             }
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             gen_helper_mwait(cpu_env, tcg_const_i32(s->pc - s->base.pc_next));
             s->base.is_jmp = DISAS_NORETURN;
             break;
@@ -7697,7 +7701,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
                 break;
             }
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             gen_helper_vmrun(cpu_env, tcg_const_i32(s->aflag - 1),
                              tcg_const_i32(s->pc - s->base.pc_next));
             tcg_gen_exit_tb(NULL, 0);
@@ -7709,7 +7713,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
                 goto illegal_op;
             }
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             gen_helper_vmmcall(cpu_env);
             break;
 
@@ -7721,7 +7725,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
                 break;
             }
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             gen_helper_vmload(cpu_env, tcg_const_i32(s->aflag - 1));
             break;
 
@@ -7733,7 +7737,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
                 break;
             }
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             gen_helper_vmsave(cpu_env, tcg_const_i32(s->aflag - 1));
             break;
 
@@ -7759,7 +7763,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
                 break;
             }
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             gen_helper_clgi(cpu_env);
             break;
 
@@ -7905,7 +7909,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
                 goto illegal_op;
             }
             gen_update_cc_op(s);
-            gen_jmp_im(s, s->base.pc_next - s->cs_base);
+            gen_update_eip_cur(s);
             if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
                 gen_io_start();
             }
@@ -8818,7 +8822,7 @@ static void i386_tr_tb_stop(DisasContextBase *dcbase, 
CPUState *cpu)
     DisasContext *dc = container_of(dcbase, DisasContext, base);
 
     if (dc->base.is_jmp == DISAS_TOO_MANY) {
-        gen_jmp_im(dc, dc->base.pc_next - dc->cs_base);
+        gen_update_eip_cur(dc);
         gen_eob(dc);
     }
 }
-- 
2.34.1