4 files changed, 51 insertions, 0 deletions
diff --git a/01-ctest/Makefile b/01-ctest/Makefile
new file mode 100644
index 0000000..84e84e4
--- /dev/null
+++ b/01-ctest/Makefile
@@ -0,0 +1,3 @@
+TARGET:=dispctest.elf
+OBJS:=start.o main.o
+include ../common.mk
diff --git a/01-ctest/main.c b/01-ctest/main.c
new file mode 100644
index 0000000..fb7ec73
--- /dev/null
+++ b/01-ctest/main.c
@@ -0,0 +1,18 @@
+#include <stdint.h>
+
+enum {
+  DISPH = 480,
+  DISPW = 800,
+};
+
+void cstart(void)
+{
+  uint16_t * const dptr = (uint16_t *)0x14800000;
+
+  for (int y = 0; y < DISPH; y++) {
+    for (int x = 0; x < DISPW; x++) {
+      dptr[y*DISPW+x] = ((x&1)^(y&1)) ? 0 : 0xffff;
+    }
+  }
+}
+
diff --git a/01-ctest/start.S b/01-ctest/start.S
new file mode 100644
index 0000000..933bf48
--- /dev/null
+++ b/01-ctest/start.S
@@ -0,0 +1,25 @@
+#define VRAMADDR 0x14800000
+#define DISPH 480
+#define DISPW 800
+
+#define DRAM_START 0xa0000000
+#define DRAM_END   0xa4000000
+
+.globl start
+.arm
+start:
+  @setup stack
+  ldr sp, =(DRAM_END)
+  @initialize bss
+  ldr r0, =_edata
+  ldr r1, =_end
+  mov r2, #0
+.Lbssloop:
+  cmp r0, r1
+  bhs .Lbssloopend
+  stmia r0!, {r2}
+  b .Lbssloop
+.Lbssloopend:
+  blx cstart
+.Lhalt:
+  b .Lhalt
diff --git a/01-ctest/test.h b/01-ctest/test.h
new file mode 100644
index 0000000..6290759
--- /dev/null
+++ b/01-ctest/test.h
@@ -0,0 +1,5 @@
+#ifndef MYON_TEST_H_INCLUDED
+#define MYON_TEST_H_INCLUDED
+int add(int a, int b);
+int addt(int a, int b) __attribute__((target("thumb")));
+#endif // MYON_TEST_H_INCLUDED