First commit XiUOS

2021-04-28 17:49:18 +08:00
commit 6001051eb7
1331 changed files with 433955 additions and 0 deletions
@@ -0,0 +1,43 @@
+#include <stdio.h>
+#include <stdint.h>
+
+extern int main(void);
+extern void UserTaskQuit(void);
+extern uintptr_t _ustext;
+extern uintptr_t _uetext;
+extern uintptr_t _ueronly;
+extern uintptr_t _usdata;
+extern uintptr_t _uedata;
+extern uintptr_t _usbss;
+extern uintptr_t _uebss;
+typedef int (*main_t)(int argc, char *argv[]);
+typedef void (*exit_t)(void);
+struct userspace_s
+{
+  main_t    us_entrypoint;
+  exit_t    us_taskquit;
+  uintptr_t us_textstart;
+  uintptr_t us_textend;
+  uintptr_t us_datasource;
+  uintptr_t us_datastart;
+  uintptr_t us_dataend;
+  uintptr_t us_bssstart;
+  uintptr_t us_bssend;
+  uintptr_t us_heapend;
+};
+
+const struct userspace_s userspace __attribute__ ((section (".userspace"))) =
+{
+  /* General memory map */
+
+  .us_entrypoint    = (main_t)main,
+  .us_taskquit      = (exit_t)UserTaskQuit,
+  .us_textstart     = (uintptr_t)&_ustext,
+  .us_textend       = (uintptr_t)&_uetext,
+  .us_datasource    = (uintptr_t)&_ueronly,
+  .us_datastart     = (uintptr_t)&_usdata,
+  .us_dataend       = (uintptr_t)&_uedata,
+  .us_bssstart      = (uintptr_t)&_usbss,
+  .us_bssend        = (uintptr_t)&_uebss,
+
+};