[libc-commits] [libc] [libc] init uefi os target (PR #120687)

[Nick Desaulniers via libc-commits]

================
@@ -0,0 +1,80 @@
+#include "file.h"
+#include "hdr/types/FILE.h"
+#include "src/__support/macros/config.h"
+#include <Uefi.h>
+
+#define STDIN_FILENO 0
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+
+namespace LIBC_NAMESPACE_DECL {
+bool File::needsReset() { return handle_type == FileHandleId; }
+
+void File::reset() {
+  if (handle_type != FileHandleId)
+    return;
+
+  if (handle.id == STDIN_FILENO) {
+    handle = (FileHandle){
+        .simple_text_input = efi_system_table->ConIn,
+    };
+    handle_type = FileHandleSimpleTextInput;
+  } else {
+    handle = (FileHandle){
+        .simple_text_output = handle.id == STDERR_FILENO
+                                  ? efi_system_table->StdErr
+                                  : efi_system_table->ConOut,
+    };
+    handle_type = FileHandleSimpleTextOutput;
+  }
+}
+
+size_t File::read(void *data, size_t len) {
+  (void)data;
+  (void)len;
----------------
nickdesaulniers wrote:

same thing about unused params: https://godbolt.org/z/54db75bx6

https://github.com/llvm/llvm-project/pull/120687