ati_2d_blt remains the public interface to the blitter but the bulk of
the implementation is moved down into ati_2d_do_blt which is passed an
ATI2DCtx.

Signed-off-by: Chad Jablonski <chad@jablonski.xyz>
---
 hw/display/ati_2d.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/hw/display/ati_2d.c b/hw/display/ati_2d.c
index cf80296a25..063928c442 100644
--- a/hw/display/ati_2d.c
+++ b/hw/display/ati_2d.c
@@ -123,15 +123,12 @@ static void setup_2d_blt_ctx(const ATIVGAState *s, ATI2DCtx *ctx)
             (ctx->top_to_bottom ? 'v' : '^'));
 }
 
-void ati_2d_blt(ATIVGAState *s)
+static void ati_2d_do_blt(ATIVGAState *s, ATI2DCtx *ctx)
 {
     /* FIXME it is probably more complex than this and may need to be */
     /* rewritten but for now as a start just to get some output: */
     bool use_pixman_fill = s->use_pixman & BIT(0);
     bool use_pixman_blt = s->use_pixman & BIT(1);
-    ATI2DCtx ctx_;
-    ATI2DCtx *ctx = &ctx_;
-    setup_2d_blt_ctx(s, ctx);
     if (!ctx->bpp) {
         qemu_log_mask(LOG_GUEST_ERROR, "Invalid bpp\n");
         return;
@@ -263,8 +260,13 @@ void ati_2d_blt(ATIVGAState *s)
     default:
         qemu_log_mask(LOG_UNIMP, "Unimplemented ati_2d blt op %x\n",
                       ctx->rop3 >> 16);
-        return;
     }
+}
 
-    ati_set_dirty(&s->vga, ctx);
+void ati_2d_blt(ATIVGAState *s)
+{
+    ATI2DCtx ctx;
+    setup_2d_blt_ctx(s, &ctx);
+    ati_2d_do_blt(s, &ctx);
+    ati_set_dirty(&s->vga, &ctx);
 }
-- 
2.52.0