tcg: Infrastructure for managing constant pools

A new shared header tcg-pool.inc.c adds new_pool_label,
for registering a tcg_target_ulong to be emitted after
the generated code, plus relocation data to install a
pointer to the data.

A new pointer is added to the TCGContext, so that we
dump the constant pool as data, not code.

Signed-off-by: Richard Henderson <rth@twiddle.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/tcg/tcg.c b/tcg/tcg.c
index dd74eabb0a..fd8a3dfe93 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -399,6 +399,7 @@ TranslationBlock *tcg_tb_alloc(TCGContext *s)
         return NULL;
     }
     s->code_gen_ptr = next;
+    s->data_gen_ptr = NULL;
     return tb;
 }
 
@@ -2619,6 +2620,9 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
 #ifdef TCG_TARGET_NEED_LDST_LABELS
     s->ldst_labels = NULL;
 #endif
+#ifdef TCG_TARGET_NEED_POOL_LABELS
+    s->pool_labels = NULL;
+#endif
 
     num_insns = -1;
     for (oi = s->gen_op_buf[0].next; oi != 0; oi = oi_next) {
@@ -2698,6 +2702,11 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
         return -1;
     }
 #endif
+#ifdef TCG_TARGET_NEED_POOL_LABELS
+    if (!tcg_out_pool_finalize(s)) {
+        return -1;
+    }
+#endif
 
     /* flush instruction cache */
     flush_icache_range((uintptr_t)s->code_buf, (uintptr_t)s->code_ptr);