[Qemu-devel] [PATCH v2 37/45] tcg: introduce **tcg_ctxs to keep track of all TCGContext's

[Emilio G. Cota]

Groundwork for supporting multiple TCG contexts.

Note that having n_tcg_ctxs is unnecessary. However, it is
convenient to have it, since it will simplify iterating over the
array: we'll have just a for loop instead of having to iterate
over a NULL-terminated array (which would require n+1 elems)
or having to check with ifdef's for usermode/softmmu.

Signed-off-by: Emilio G. Cota <address@hidden>
---
 tcg/tcg.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tcg/tcg.c b/tcg/tcg.c
index f907c47..8094278 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -115,6 +115,8 @@ static int tcg_target_const_match(tcg_target_long val, 
TCGType type,
 static void tcg_out_tb_init(TCGContext *s);
 static bool tcg_out_tb_finalize(TCGContext *s);
 
+static TCGContext **tcg_ctxs;
+static unsigned int n_tcg_ctxs;
 
 static TCGRegSet tcg_target_available_regs[2];
 static TCGRegSet tcg_target_call_clobber_regs;
@@ -323,6 +325,13 @@ static GHashTable *helper_table;
 static int indirect_reg_alloc_order[ARRAY_SIZE(tcg_target_reg_alloc_order)];
 static void process_op_defs(TCGContext *s);
 
+static void tcg_ctxs_init(TCGContext *s)
+{
+    tcg_ctxs = g_new(TCGContext *, 1);
+    tcg_ctxs[0] = s;
+    n_tcg_ctxs = 1;
+}
+
 void tcg_context_init(TCGContext *s)
 {
     int op, total_args, n, i;
@@ -381,6 +390,7 @@ void tcg_context_init(TCGContext *s)
         indirect_reg_alloc_order[i] = tcg_target_reg_alloc_order[i];
     }
 
+    tcg_ctxs_init(s);
     tcg_ctx = s;
 }
 
-- 
2.7.4