tcg: Pass TCGHelperInfo to tcg_gen_callN

In preparation for compiling tcg/ only once, eliminate
the all_helpers array.  Instantiate the info structs for
the generic helpers in accel/tcg/, and the structs for
the target-specific helpers in each translate.c.

Since we don't see all of the info structs at startup,
initialize at first use, using g_once_init_* to make
sure we don't race while doing so.

Reviewed-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 7 insertions, 2 deletions

diff --git a/include/tcg/helper-info.h b/include/tcg/helper-info.h
index f65f81c2e7..4b6c9b43e8 100644
--- a/include/tcg/helper-info.h
+++ b/include/tcg/helper-info.h
@@ -40,12 +40,17 @@ typedef struct TCGCallArgumentLoc {
     unsigned tmp_subindex       : 2;
 } TCGCallArgumentLoc;
 
-typedef struct TCGHelperInfo {
+struct TCGHelperInfo {
     void *func;
     const char *name;
+
+    /* Used with g_once_init_enter. */
 #ifdef CONFIG_TCG_INTERPRETER
     ffi_cif *cif;
+#else
+    uintptr_t init;
 #endif
+
     unsigned typemask           : 32;
     unsigned flags              : 8;
     unsigned nr_in              : 8;
@@ -54,6 +59,6 @@ typedef struct TCGHelperInfo {
 
     /* Maximum physical arguments are constrained by TCG_TYPE_I128. */
     TCGCallArgumentLoc in[MAX_CALL_IARGS * (128 / TCG_TARGET_REG_BITS)];
-} TCGHelperInfo;
+};
 
 #endif /* TCG_HELPER_INFO_H */