tcg: Introduce temp_arg, export temp_idx

At the same time, drop the TCGContext argument and use tcg_ctx instead.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>

1 files changed, 12 insertions, 0 deletions

diff --git a/tcg/tcg.h b/tcg/tcg.h
index 5fcdec1..828c1e7 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -729,6 +729,18 @@ struct TCGContext {
 extern TCGContext tcg_ctx;
 extern bool parallel_cpus;
 
+static inline size_t temp_idx(TCGTemp *ts)
+{
+    ptrdiff_t n = ts - tcg_ctx.temps;
+    tcg_debug_assert(n >= 0 && n < tcg_ctx.nb_temps);
+    return n;
+}
+
+static inline TCGArg temp_arg(TCGTemp *ts)
+{
+    return temp_idx(ts);
+}
+
 static inline TCGTemp *arg_temp(TCGArg a)
 {
     return a == TCG_CALL_DUMMY_ARG ? NULL : &tcg_ctx.temps[a];