From e8ef939274865f6c14220519b76c53d68c095a76 Mon Sep 17 00:00:00 2001
From: tkchia <tkchia-cosmo@gmx.com>
Date: Thu, 6 Oct 2022 05:04:44 +0000
Subject: [PATCH] [metal] Reduce size of "screen of death" code

---
 libc/vga/tty-graph.c     | 1 +
 libc/vga/tty-graph.inc   | 5 +++--
 libc/vga/tty-klog.greg.c | 3 +++
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/libc/vga/tty-graph.c b/libc/vga/tty-graph.c
index 77cbc8a93..7a6f3429b 100644
--- a/libc/vga/tty-graph.c
+++ b/libc/vga/tty-graph.c
@@ -37,6 +37,7 @@
  */
 
 #undef KLOGTTY
+#define MAYUNROLLLOOPS unrollloops
 
 #define COLOR          TtyCanvasColor
 #define BPP            32
diff --git a/libc/vga/tty-graph.inc b/libc/vga/tty-graph.inc
index 4387f36cd..722e4dc58 100644
--- a/libc/vga/tty-graph.inc
+++ b/libc/vga/tty-graph.inc
@@ -258,8 +258,9 @@ static void DRAWBITMAP(struct Tty *tty, size_t gy, size_t gx,
   DIRTY(tty, gy, gx, gy + bm_ht, gx + bm_wid);
 }
 
-static unrollloops void FILLRECT(struct Tty *tty, size_t gy, size_t gx,
-                                 size_t fill_ht, size_t fill_wid, COLOR bg) {
+static MAYUNROLLLOOPS void FILLRECT(struct Tty *tty, size_t gy, size_t gx,
+                                    size_t fill_ht, size_t fill_wid,
+                                    COLOR bg) {
   size_t xs = tty->xs;
   char *cplotter = tty->canvas + gy * xs + gx * sizeof(COLOR);
   size_t yleft = fill_ht, xleft;
diff --git a/libc/vga/tty-klog.greg.c b/libc/vga/tty-klog.greg.c
index 8e9897ea9..3b957d858 100644
--- a/libc/vga/tty-klog.greg.c
+++ b/libc/vga/tty-klog.greg.c
@@ -37,7 +37,10 @@
  * @see libc/vga/tty-graph.inc
  */
 
+#pragma GCC optimize("s")
+
 #define KLOGTTY
+#define MAYUNROLLLOOPS /* do not unroll loops; keep the code small! */
 
 /* Instantiate output routines for 16-bit pixel formats. */
 #define COLOR          uint16_t