Moved action to top level.

Removed old iterations of the project and moved the files from 02-usart
to the root directory since that's the sole place where the action is
and that subproject has outgrown its initial title.

1 files changed, 63 insertions, 0 deletions

diff --git a/test_harness/fake_env.c b/test_harness/fake_env.c
new file mode 100644
index 0000000..6a32c99
--- /dev/null
+++ b/test_harness/fake_env.c
@@ -0,0 +1,63 @@
+#include "fake_env.h"
+
+#include <stdlib.h>
+#include <assert.h>
+
+struct fakeenv_memseg {
+  const char* name;
+  void* segment;
+};
+
+#define DEFINE_MEMORY_SEGMENT(seg, start_addr, end_addr) \
+  static __attribute((__section__("fakeenv"))) \
+    struct fakeenv_memseg fake_##seg = { \
+      .name = #seg, \
+      .segment = NULL, \
+    }; \
+  void* load_fake_##seg##__ () \
+  { \
+    if (fake_##seg .segment == NULL) { \
+      fake_##seg .segment = malloc((end_addr) - (start_addr)); \
+      assert(fake_##seg .segment != NULL); \
+    } \
+    return fake_##seg.segment; \
+  }
+
+extern struct fakeenv_memseg __start_fakeenv;
+extern struct fakeenv_memseg __stop_fakeenv;
+
+void wipeout_fake_env()
+{
+  for (struct fakeenv_memseg* iter = &__start_fakeenv;
+      iter < &__stop_fakeenv;
+      ++ iter) {
+    free(iter->segment);
+    iter->segment = NULL;
+  }
+}
+
+/* Reset and clock control. */
+DEFINE_MEMORY_SEGMENT(rcc, 0x40021000, 0x400210A0)
+
+/* Peripheral buses */
+DEFINE_MEMORY_SEGMENT(apb1, 0x40000000, 0x40010000)
+DEFINE_MEMORY_SEGMENT(apb2, 0x40010000, 0x40020000)
+DEFINE_MEMORY_SEGMENT(ahb1, 0x40020000, 0x40024400)
+DEFINE_MEMORY_SEGMENT(ahb2, 0x48000000, 0x50060C00)
+
+/* System Control Block */
+DEFINE_MEMORY_SEGMENT(scb,  0xE000E008, 0xE000EF04)
+
+/* Nested Vector Interrupt Controller (NVIC) */
+/* Note that this memory space acutally overlaps with the SCB, but
+ * they are functionally distinct entitites and such are modeled as
+ * separate structures in memeory. */
+DEFINE_MEMORY_SEGMENT(nvic, 0xE000E004, 0xE000E4F0)
+
+/* SRAM */
+DEFINE_MEMORY_SEGMENT(sram1, 0x20000000, 0x2000C000)
+DEFINE_MEMORY_SEGMENT(sram2, 0x2000C000, 0x20018000)
+
+/* Serial Peripheral Interface */
+DEFINE_MEMORY_SEGMENT(spi1, 0x40013000, 0x400133FF)
+DEFINE_MEMORY_SEGMENT(spi3, 0x40003C00, 0x40003FFF)