[libc] Add UEFI headers

libc/include/CMakeLists.txt

@@ -724,6 +724,19 @@ add_header_macro(
     .llvm-libc-macros.poll-macros
   )
 
+# UEFI spec references "Uefi.h" so we use that name for compatibility
+add_header_macro(
+  uefi
+  ../libc/include/Uefi.yaml
+  Uefi.h.def
+  Uefi.h
+  DEPENDS
+    .llvm_libc_common_h
+    .llvm-libc-types.EFI_GUID
+    .llvm-libc-types.EFI_STATUS
+    .llvm-libc-types.EFI_SYSTEM_TABLE
+)
+
 if(NOT LLVM_LIBC_FULL_BUILD)
   # We don't install headers in non-fullbuild mode.
   return()

libc/include/Uefi.h.def

@@ -0,0 +1,16 @@
+//===-- UEFI header uefi.h --------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_UEFI_H
+#define LLVM_LIBC_UEFI_H
+
+#include "__llvm-libc-common.h"
+
+%%public_api()
+
+#endif // LLVM_LIBC_UEFI_H

libc/include/Uefi.yaml

@@ -0,0 +1,15 @@
+header: Uefi.h
+standards: UEFI
+macros: []
+types:
+  - type_name: EFI_BOOT_SERVICES
+  - type_name: EFI_GUID
+  - type_name: EFI_STATUS
+  - type_name: EFI_SYSTEM_TABLE
+enums: []
+functions: []
+objects:
+  - object_name: efi_system_table
+    object_type: EFI_SYSTEM_TABLE *
+  - object_name: efi_image_handle
+    object_type: EFI_HANDLE

libc/include/llvm-libc-macros/CMakeLists.txt

@@ -337,3 +337,9 @@ add_macro_header(
   HDR
     poll-macros.h
 )
+
+add_macro_header(
+  EFIAPI_macros
+  HDR
+    EFIAPI-macros.h
+)

libc/include/llvm-libc-macros/EFIAPI-macros.h

@@ -0,0 +1,18 @@
+//===-- Definition of EFIAPI macro ------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_MACROS_EFIAPI_MACROS_H
+#define LLVM_LIBC_MACROS_EFIAPI_MACROS_H
+
+#if defined(__x86_64__) && !defined(__ILP32__)
+#define EFIAPI __attribute__((ms_abi))
+#else
+#define EFIAPI
+#endif
+
+#endif // LLVM_LIBC_MACROS_EFIAPI_MACROS_H

libc/include/llvm-libc-types/CMakeLists.txt

@@ -157,3 +157,127 @@ DEPENDS
 add_header(locale_t HDR locale_t.h)
 add_header(struct_lconv HDR struct_lconv.h)
 add_header(stdfix-types HDR stdfix-types.h)
+
+# UEFI
+add_header(EFI_GUID HDR EFI_GUID.h DEPENDS libc.include.llvm-libc-macros.stdint_macros)
+add_header(EFI_CONFIGURATION_TABLE HDR EFI_CONFIGURATION_TABLE.h DEPENDS .EFI_GUID)
+
+add_header(EFI_PHYSICAL_ADDRESS HDR EFI_PHYSICAL_ADDRESS.h DEPENDS libc.include.llvm-libc-macros.stdint_macros)
+add_header(EFI_VIRTUAL_ADDRESS HDR EFI_VIRTUAL_ADDRESS.h DEPENDS libc.include.llvm-libc-macros.stdint_macros)
+
+add_header(EFI_MEMORY_DESCRIPTOR
+  HDR
+    EFI_MEMORY_DESCRIPTOR.h
+  DEPENDS
+    libc.include.llvm-libc-macros.stdint_macros
+    .EFI_PHYSICAL_ADDRESS
+    .EFI_VIRTUAL_ADDRESS
+)
+
+add_header(EFI_ALLOCATE_TYPE HDR EFI_ALLOCATE_TYPE.h)
+add_header(EFI_EVENT HDR EFI_EVENT.h)
+add_header(EFI_INTERFACE_TYPE HDR EFI_INTERFACE_TYPE.h)
+add_header(EFI_LOCATE_SEARCH_TYPE HDR EFI_LOCATE_SEARCH_TYPE.h)
+add_header(EFI_MEMORY_TYPE HDR EFI_MEMORY_TYPE.h)
+add_header(EFI_HANDLE HDR EFI_HANDLE.h)
+add_header(EFI_TIME HDR EFI_TIME.h DEPENDS libc.include.llvm-libc-macros.stdint_macros)
+add_header(EFI_TIMER_DELAY HDR EFI_TIMER_DELAY.h)
+add_header(EFI_TPL HDR EFI_TPL.h DEPENDS .size_t)
+add_header(EFI_STATUS HDR EFI_STATUS.h DEPENDS .size_t)
+
+add_header(EFI_OPEN_PROTOCOL_INFORMATION_ENTRY
+  HDR
+    EFI_OPEN_PROTOCOL_INFORMATION_ENTRY.h
+  DEPENDS
+    libc.include.llvm-libc-macros.stdint_macros
+    .EFI_HANDLE
+)
+
+add_header(EFI_CAPSULE
+  HDR
+    EFI_CAPSULE.h
+  DEPENDS
+    libc.include.llvm-libc-macros.stdint_macros
+    .EFI_GUID
+)
+
+add_header(EFI_TABLE_HEADER
+  HDR
+    EFI_TABLE_HEADER.h
+  DEPENDS
+    libc.include.llvm-libc-macros.stdint_macros
+)
+
+add_header(EFI_DEVICE_PATH_PROTOCOL
+  HDR
+    EFI_DEVICE_PATH_PROTOCOL.h
+  DEPENDS
+    libc.include.llvm-libc-macros.stdint_macros
+)
+
+add_header(EFI_SIMPLE_TEXT_INPUT_PROTOCOL
+  HDR
+    EFI_SIMPLE_TEXT_INPUT_PROTOCOL.h
+  DEPENDS
+    libc.include.llvm-libc-macros.EFIAPI_macros
+    libc.include.llvm-libc-macros.stdint_macros
+    .EFI_EVENT
+    .EFI_STATUS
+    .char16_t
+)
+
+add_header(EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL
+  HDR
+    EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.h
+  DEPENDS
+    libc.include.llvm-libc-macros.stdint_macros
+    .EFI_STATUS
+    .size_t
+)
+
+add_header(EFI_BOOT_SERVICES
+  HDR
+    EFI_BOOT_SERVICES.h
+  DEPENDS
+    libc.include.llvm-libc-macros.EFIAPI_macros
+    .EFI_ALLOCATE_TYPE
+    .EFI_DEVICE_PATH_PROTOCOL
+    .EFI_EVENT
+    .EFI_INTERFACE_TYPE
+    .EFI_LOCATE_SEARCH_TYPE
+    .EFI_MEMORY_DESCRIPTOR
+    .EFI_MEMORY_TYPE
+    .EFI_OPEN_PROTOCOL_INFORMATION_ENTRY
+    .EFI_PHYSICAL_ADDRESS
+    .EFI_STATUS
+    .EFI_TABLE_HEADER
+    .EFI_TIMER_DELAY
+    .EFI_TPL
+    .char16_t
+)
+
+add_header(EFI_RUNTIME_SERVICES
+  HDR
+    EFI_RUNTIME_SERVICES.h
+  DEPENDS
+    .EFI_CAPSULE
+    .EFI_STATUS
+    .EFI_TABLE_HEADER
+    .EFI_TIME
+    .char16_t
+)
+
+add_header(EFI_SYSTEM_TABLE
+  HDR
+    EFI_SYSTEM_TABLE.h
+  DEPENDS
+    .EFI_BOOT_SERVICES
+    .EFI_CONFIGURATION_TABLE
+    .EFI_HANDLE
+    .EFI_RUNTIME_SERVICES
+    .EFI_SIMPLE_TEXT_INPUT_PROTOCOL
+    .EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL
+    .EFI_STATUS
+    .EFI_TABLE_HEADER
+    .char16_t
+)

libc/include/llvm-libc-types/EFI_ALLOCATE_TYPE.h

@@ -0,0 +1,19 @@
+//===-- Definition of EFI_ALLOCATE_TYPE type ------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_TYPES_EFI_ALLOCATE_TYPE_H
+#define LLVM_LIBC_TYPES_EFI_ALLOCATE_TYPE_H
+
+typedef enum {
+  AllocateAnyPages,
+  AllocateMaxAddress,
+  AllocateAddress,
+  MaxAllocateType
+} EFI_ALLOCATE_TYPE;
+
+#endif // LLVM_LIBC_TYPES_EFI_ALLOCATE_TYPE_H