initial

Bootloader/Source/uefi/unistd.c

@@ -0,0 +1,65 @@
+/*
+ * unistd.c
+ *
+ * Copyright (C) 2021 bzt (bztsrc@gitlab)
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * This file is part of the POSIX-UEFI package.
+ * @brief Implementing functions which are defined in unistd.h
+ *
+ */
+
+#include <uefi.h>
+
+int __remove(const wchar_t *__filename, int isdir);
+
+int usleep (unsigned long int __useconds)
+{
+    BS->Stall(__useconds);
+    return 0;
+}
+
+unsigned int sleep (unsigned int __seconds)
+{
+    /* Issue 56: some real firmware is buggy and Stall doesn't work for large delays, so use a timer instead */
+    uint64_t usec = (uint64_t)__seconds * 1000000UL;
+    uintn_t index = 0;
+    efi_event_t timer_event;
+    efi_status_t status = status = BS->CreateEvent(EVT_TIMER, 0, NULL, NULL, &timer_event);
+    if(!EFI_ERROR(status)) {
+        BS->SetTimer(timer_event, TimerRelative, usec * 10UL);
+        BS->WaitForEvent(1, &timer_event, &index);
+        BS->CloseEvent(timer_event);
+    } else
+        BS->Stall(usec);
+    return 0;
+}
+
+int unlink (const wchar_t *__filename)
+{
+    return __remove(__filename, 0);
+}
+
+int rmdir (const wchar_t *__filename)
+{
+    return __remove(__filename, 1);
+}