accel/tcg: Introduce translator_fake_ld

Replace translator_fake_ldb, which required multiple calls,
with translator_fake_ld, which can take all data at once.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/accel/tcg/translator.c b/accel/tcg/translator.c
index 00322c6fd974d99d548f51ceaeff299650d9f6da..c56967eecd35c08312ca7827fd30422302bfb8a0 100644 (file)
--- a/accel/tcg/translator.c
+++ b/accel/tcg/translator.c
@@ -468,9 +468,8 @@ uint64_t translator_ldq(CPUArchState *env, DisasContextBase *db, vaddr pc)
     return tgt;
 }
 
-void translator_fake_ldb(DisasContextBase *db, vaddr pc, uint8_t insn8)
+void translator_fake_ld(DisasContextBase *db, const void *data, size_t len)
 {
-    assert(pc >= db->pc_first);
     db->fake_insn = true;
-    record_save(db, pc, &insn8, sizeof(insn8));
+    record_save(db, db->pc_first, data, len);
 }

diff --git a/include/exec/translator.h b/include/exec/translator.h
index 411ce2b47e7c8635bc3256cc2d34b335e2ecb839..25004dfb76eda4c6323e06d7d20d26aeb4c0116f 100644 (file)
--- a/include/exec/translator.h
+++ b/include/exec/translator.h
@@ -234,17 +234,17 @@ translator_ldq_swap(CPUArchState *env, DisasContextBase *db,
 }
 
 /**
- * translator_fake_ldb - fake instruction load
+ * translator_fake_ld - fake instruction load
  * @db: Disassembly context
- * @pc: program counter of instruction
- * @insn8: byte of instruction
+ * @data: bytes of instruction
+ * @len: number of bytes
  *
  * This is a special case helper used where the instruction we are
  * about to translate comes from somewhere else (e.g. being
  * re-synthesised for s390x "ex"). It ensures we update other areas of
  * the translator with details of the executed instruction.
  */
-void translator_fake_ldb(DisasContextBase *db, vaddr pc, uint8_t insn8);
+void translator_fake_ld(DisasContextBase *db, const void *data, size_t len);
 
 /**
  * translator_st

diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c
index d74939389a9c987b6fa2d5fde0fb1d50afbd185f..2eb787e4013df74d37911ecba328eba65526a3b0 100644 (file)
--- a/target/s390x/tcg/translate.c
+++ b/target/s390x/tcg/translate.c
@@ -6191,6 +6191,8 @@ static const DisasInsn *extract_insn(CPUS390XState *env, DisasContext *s)
     const DisasInsn *info;
 
     if (unlikely(s->ex_value)) {
+        uint64_t be_insn;
+
         /* Drop the EX data now, so that it's clear on exception paths.  */
         tcg_gen_st_i64(tcg_constant_i64(0), tcg_env,
                        offsetof(CPUS390XState, ex_value));
@@ -6200,10 +6202,8 @@ static const DisasInsn *extract_insn(CPUS390XState *env, DisasContext *s)
         ilen = s->ex_value & 0xf;
 
         /* Register insn bytes with translator so plugins work. */
-        for (int i = 0; i < ilen; i++) {
-            uint8_t byte = extract64(insn, 56 - (i * 8), 8);
-            translator_fake_ldb(&s->base, pc + i, byte);
-        }
+        be_insn = cpu_to_be64(insn);
+        translator_fake_ld(&s->base, &be_insn, ilen);
         op = insn >> 56;
     } else {
         insn = ld_code2(env, s, pc);