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[v4,18/31] target/ppc: Introduce macros to check isa extensions

Message ID 20210512185441.3619828-19-matheus.ferst@eldorado.org.br
State Superseded
Headers show
Series [v4,01/31] target/ppc: Add cia field to DisasContext | expand

Commit Message

Matheus K. Ferst May 12, 2021, 6:54 p.m. UTC 
From: Richard Henderson <richard.henderson@linaro.org>


These will be used by the decodetree trans_* functions
to early-exit when the instruction set is not enabled.

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

Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>

---
 target/ppc/translate.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

-- 
2.25.1
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Patch

diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index cd4b34aa91..153c61e8ec 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -7753,6 +7753,32 @@  static inline void set_avr64(int regno, TCGv_i64 src, bool high)
     tcg_gen_st_i64(src, cpu_env, avr64_offset(regno, high));
 }
 
+/*
+ * Helpers for trans_* functions to check for specific insns flags.
+ * Use token pasting to ensure that we use the proper flag with the
+ * proper variable.
+ */
+#define REQUIRE_INSNS_FLAGS(CTX, NAME) \
+    do {                                                \
+        if (((CTX)->insns_flags & PPC_##NAME) == 0) {   \
+            return false;                               \
+        }                                               \
+    } while (0)
+
+#define REQUIRE_INSNS_FLAGS2(CTX, NAME) \
+    do {                                                \
+        if (((CTX)->insns_flags2 & PPC2_##NAME) == 0) { \
+            return false;                               \
+        }                                               \
+    } while (0)
+
+/* Then special-case the check for 64-bit so that we elide code for ppc32. */
+#if TARGET_LONG_BITS == 32
+# define REQUIRE_64BIT(CTX)  return false
+#else
+# define REQUIRE_64BIT(CTX)  REQUIRE_INSNS_FLAGS(CTX, 64B)
+#endif
+
 #include "translate/fp-impl.c.inc"
 
 #include "translate/vmx-impl.c.inc"