target/i386: Remove cur_eip, next_eip arguments to gen_repz*

All callers pass s->base.pc_next and s->pc, which we can just
as well compute within the functions.  Pull out common helpers
and reduce the amount of code under macros.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221001140935.465607-13-richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 59 insertions, 61 deletions

diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index fe99c4361c..c8ef9f0356 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -736,7 +736,7 @@ static bool gen_check_io(DisasContext *s, MemOp ot, TCGv_i32 port,
 #endif
 }
 
-static inline void gen_movs(DisasContext *s, MemOp ot)
+static void gen_movs(DisasContext *s, MemOp ot)
 {
     gen_string_movl_A0_ESI(s);
     gen_op_ld_v(s, ot, s->T0, s->A0);
@@ -1156,18 +1156,18 @@ static inline void gen_jcc1(DisasContext *s, int b, TCGLabel *l1)
 
 /* XXX: does not work with gdbstub "ice" single step - not a
    serious problem */
-static TCGLabel *gen_jz_ecx_string(DisasContext *s, target_ulong next_eip)
+static TCGLabel *gen_jz_ecx_string(DisasContext *s)
 {
     TCGLabel *l1 = gen_new_label();
     TCGLabel *l2 = gen_new_label();
     gen_op_jnz_ecx(s, s->aflag, l1);
     gen_set_label(l2);
-    gen_jmp_tb(s, next_eip, 1);
+    gen_jmp_tb(s, s->pc - s->cs_base, 1);
     gen_set_label(l1);
     return l2;
 }
 
-static inline void gen_stos(DisasContext *s, MemOp ot)
+static void gen_stos(DisasContext *s, MemOp ot)
 {
     gen_op_mov_v_reg(s, MO_32, s->T0, R_EAX);
     gen_string_movl_A0_EDI(s);
@@ -1176,7 +1176,7 @@ static inline void gen_stos(DisasContext *s, MemOp ot)
     gen_op_add_reg_T0(s, s->aflag, R_EDI);
 }
 
-static inline void gen_lods(DisasContext *s, MemOp ot)
+static void gen_lods(DisasContext *s, MemOp ot)
 {
     gen_string_movl_A0_ESI(s);
     gen_op_ld_v(s, ot, s->T0, s->A0);
@@ -1185,7 +1185,7 @@ static inline void gen_lods(DisasContext *s, MemOp ot)
     gen_op_add_reg_T0(s, s->aflag, R_ESI);
 }
 
-static inline void gen_scas(DisasContext *s, MemOp ot)
+static void gen_scas(DisasContext *s, MemOp ot)
 {
     gen_string_movl_A0_EDI(s);
     gen_op_ld_v(s, ot, s->T1, s->A0);
@@ -1194,7 +1194,7 @@ static inline void gen_scas(DisasContext *s, MemOp ot)
     gen_op_add_reg_T0(s, s->aflag, R_EDI);
 }
 
-static inline void gen_cmps(DisasContext *s, MemOp ot)
+static void gen_cmps(DisasContext *s, MemOp ot)
 {
     gen_string_movl_A0_EDI(s);
     gen_op_ld_v(s, ot, s->T1, s->A0);
@@ -1222,7 +1222,7 @@ static void gen_bpt_io(DisasContext *s, TCGv_i32 t_port, int ot)
     }
 }
 
-static inline void gen_ins(DisasContext *s, MemOp ot)
+static void gen_ins(DisasContext *s, MemOp ot)
 {
     gen_string_movl_A0_EDI(s);
     /* Note: we must do this dummy write first to be restartable in
@@ -1238,7 +1238,7 @@ static inline void gen_ins(DisasContext *s, MemOp ot)
     gen_bpt_io(s, s->tmp2_i32, ot);
 }
 
-static inline void gen_outs(DisasContext *s, MemOp ot)
+static void gen_outs(DisasContext *s, MemOp ot)
 {
     gen_string_movl_A0_ESI(s);
     gen_op_ld_v(s, ot, s->T0, s->A0);
@@ -1252,42 +1252,49 @@ static inline void gen_outs(DisasContext *s, MemOp ot)
     gen_bpt_io(s, s->tmp2_i32, ot);
 }
 
-/* same method as Valgrind : we generate jumps to current or next
-   instruction */
-#define GEN_REPZ(op)                                                          \
-static inline void gen_repz_ ## op(DisasContext *s, MemOp ot,              \
-                                 target_ulong cur_eip, target_ulong next_eip) \
-{                                                                             \
-    TCGLabel *l2;                                                             \
-    gen_update_cc_op(s);                                                      \
-    l2 = gen_jz_ecx_string(s, next_eip);                                      \
-    gen_ ## op(s, ot);                                                        \
-    gen_op_add_reg_im(s, s->aflag, R_ECX, -1);                                \
-    /* a loop would cause two single step exceptions if ECX = 1               \
-       before rep string_insn */                                              \
-    if (s->repz_opt)                                                          \
-        gen_op_jz_ecx(s, s->aflag, l2);                                       \
-    gen_jmp(s, cur_eip);                                                      \
-}
-
-#define GEN_REPZ2(op)                                                         \
-static inline void gen_repz_ ## op(DisasContext *s, MemOp ot,              \
-                                   target_ulong cur_eip,                      \
-                                   target_ulong next_eip,                     \
-                                   int nz)                                    \
-{                                                                             \
-    TCGLabel *l2;                                                             \
-    gen_update_cc_op(s);                                                      \
-    l2 = gen_jz_ecx_string(s, next_eip);                                      \
-    gen_ ## op(s, ot);                                                        \
-    gen_op_add_reg_im(s, s->aflag, R_ECX, -1);                                \
-    gen_update_cc_op(s);                                                      \
-    gen_jcc1(s, (JCC_Z << 1) | (nz ^ 1), l2);                                 \
-    if (s->repz_opt)                                                          \
-        gen_op_jz_ecx(s, s->aflag, l2);                                       \
-    gen_jmp(s, cur_eip);                                                      \
+/* Generate jumps to current or next instruction */
+static void gen_repz(DisasContext *s, MemOp ot,
+                     void (*fn)(DisasContext *s, MemOp ot))
+{
+    TCGLabel *l2;
+    gen_update_cc_op(s);
+    l2 = gen_jz_ecx_string(s);
+    fn(s, ot);
+    gen_op_add_reg_im(s, s->aflag, R_ECX, -1);
+    /*
+     * A loop would cause two single step exceptions if ECX = 1
+     * before rep string_insn
+     */
+    if (s->repz_opt) {
+        gen_op_jz_ecx(s, s->aflag, l2);
+    }
+    gen_jmp(s, s->base.pc_next - s->cs_base);
 }
 
+#define GEN_REPZ(op) \
+    static inline void gen_repz_ ## op(DisasContext *s, MemOp ot) \
+    { gen_repz(s, ot, gen_##op); }
+
+static void gen_repz2(DisasContext *s, MemOp ot, int nz,
+                      void (*fn)(DisasContext *s, MemOp ot))
+{
+    TCGLabel *l2;
+    gen_update_cc_op(s);
+    l2 = gen_jz_ecx_string(s);
+    fn(s, ot);
+    gen_op_add_reg_im(s, s->aflag, R_ECX, -1);
+    gen_update_cc_op(s);
+    gen_jcc1(s, (JCC_Z << 1) | (nz ^ 1), l2);
+    if (s->repz_opt) {
+        gen_op_jz_ecx(s, s->aflag, l2);
+    }
+    gen_jmp(s, s->base.pc_next - s->cs_base);
+}
+
+#define GEN_REPZ2(op) \
+    static inline void gen_repz_ ## op(DisasContext *s, MemOp ot, int nz) \
+    { gen_repz2(s, ot, nz, gen_##op); }
+
 GEN_REPZ(movs)
 GEN_REPZ(stos)
 GEN_REPZ(lods)
@@ -6623,8 +6630,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
     case 0xa5:
         ot = mo_b_d(b, dflag);
         if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
-            gen_repz_movs(s, ot, s->base.pc_next - s->cs_base,
-                          s->pc - s->cs_base);
+            gen_repz_movs(s, ot);
         } else {
             gen_movs(s, ot);
         }
@@ -6634,8 +6640,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
     case 0xab:
         ot = mo_b_d(b, dflag);
         if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
-            gen_repz_stos(s, ot, s->base.pc_next - s->cs_base,
-                          s->pc - s->cs_base);
+            gen_repz_stos(s, ot);
         } else {
             gen_stos(s, ot);
         }
@@ -6644,8 +6649,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
     case 0xad:
         ot = mo_b_d(b, dflag);
         if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
-            gen_repz_lods(s, ot, s->base.pc_next - s->cs_base,
-                          s->pc - s->cs_base);
+            gen_repz_lods(s, ot);
         } else {
             gen_lods(s, ot);
         }
@@ -6654,11 +6658,9 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
     case 0xaf:
         ot = mo_b_d(b, dflag);
         if (prefixes & PREFIX_REPNZ) {
-            gen_repz_scas(s, ot, s->base.pc_next - s->cs_base,
-                          s->pc - s->cs_base, 1);
+            gen_repz_scas(s, ot, 1);
         } else if (prefixes & PREFIX_REPZ) {
-            gen_repz_scas(s, ot, s->base.pc_next - s->cs_base,
-                          s->pc - s->cs_base, 0);
+            gen_repz_scas(s, ot, 0);
         } else {
             gen_scas(s, ot);
         }
@@ -6668,11 +6670,9 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
     case 0xa7:
         ot = mo_b_d(b, dflag);
         if (prefixes & PREFIX_REPNZ) {
-            gen_repz_cmps(s, ot, s->base.pc_next - s->cs_base,
-                          s->pc - s->cs_base, 1);
+            gen_repz_cmps(s, ot, 1);
         } else if (prefixes & PREFIX_REPZ) {
-            gen_repz_cmps(s, ot, s->base.pc_next - s->cs_base,
-                          s->pc - s->cs_base, 0);
+            gen_repz_cmps(s, ot, 0);
         } else {
             gen_cmps(s, ot);
         }
@@ -6690,8 +6690,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
             gen_io_start();
         }
         if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
-            gen_repz_ins(s, ot, s->base.pc_next - s->cs_base,
-                         s->pc - s->cs_base);
+            gen_repz_ins(s, ot);
             /* jump generated by gen_repz_ins */
         } else {
             gen_ins(s, ot);
@@ -6712,8 +6711,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
             gen_io_start();
         }
         if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
-            gen_repz_outs(s, ot, s->base.pc_next - s->cs_base,
-                          s->pc - s->cs_base);
+            gen_repz_outs(s, ot);
             /* jump generated by gen_repz_outs */
         } else {
             gen_outs(s, ot);