diff mbox series

[04/22] target/i386: Create gen_update_eip_cur

Message ID 20220822233318.1728621-5-richard.henderson@linaro.org
State Superseded
Headers show
Series target/i386: pc-relative translation | expand

Commit Message

Richard Henderson Aug. 22, 2022, 11:33 p.m. UTC
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 mbox series

Patch

diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index d3b16ea28c..78b7641786 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;
@@ -6683,7 +6687,7 @@  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 {
@@ -7179,7 +7183,7 @@  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;
         }
@@ -7205,7 +7209,7 @@  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
@@ -7312,7 +7316,7 @@  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 {
@@ -7324,7 +7328,7 @@  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();
         }
@@ -7335,7 +7339,7 @@  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;
@@ -7365,7 +7369,7 @@  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
@@ -7391,13 +7395,13 @@  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;
         }
@@ -7494,7 +7498,7 @@  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);
@@ -7506,7 +7510,7 @@  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;
@@ -7584,7 +7588,7 @@  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);
@@ -7596,7 +7600,7 @@  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;
 
@@ -7608,7 +7612,7 @@  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;
 
@@ -7620,7 +7624,7 @@  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;
 
@@ -7646,7 +7650,7 @@  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;
 
@@ -7792,7 +7796,7 @@  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();
             }
@@ -8705,7 +8709,7 @@  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);
     }
 }