tcg: Add TCG_MAX_INSNS

Adjust all translators to respect it.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>

target-sh4/translate.c

@@ -1844,8 +1844,13 @@ gen_intermediate_code_internal(SuperHCPU *cpu, TranslationBlock *tb,
     ii = -1;
     num_insns = 0;
     max_insns = tb->cflags & CF_COUNT_MASK;
-    if (max_insns == 0)
+    if (max_insns == 0) {
         max_insns = CF_COUNT_MASK;
+    }
+    if (max_insns > TCG_MAX_INSNS) {
+        max_insns = TCG_MAX_INSNS;
+    }
+
     gen_tb_start(tb);
     while (ctx.bstate == BS_NONE && !tcg_op_buf_full()) {
         if (search_pc) {