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| author | Ray Ni <ray.ni@intel.com> | 2021-02-05 13:15:42 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-03-08 02:22:37 +0000 |
| commit | e59760f87e6fdd55f47d11e80455e341219c2be8 (patch) | |
| tree | 9836cebdde0d4da121c855d7315fec519acfe4f7 /MdePkg/Include/X64 | |
| parent | b8a92fa2fea548dccacc2f228b607b7febdf81c0 (diff) | |
| download | edk2-e59760f87e6fdd55f47d11e80455e341219c2be8.tar.gz edk2-e59760f87e6fdd55f47d11e80455e341219c2be8.tar.bz2 edk2-e59760f87e6fdd55f47d11e80455e341219c2be8.zip | |
MdePkg/Nasm.inc: add macros for C types used in structure definition
Signed-off-by: Ray Ni <ray.ni@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Diffstat (limited to 'MdePkg/Include/X64')
| -rw-r--r-- | MdePkg/Include/X64/Nasm.inc | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/MdePkg/Include/X64/Nasm.inc b/MdePkg/Include/X64/Nasm.inc index e57a803c81..527f71e9eb 100644 --- a/MdePkg/Include/X64/Nasm.inc +++ b/MdePkg/Include/X64/Nasm.inc @@ -1,6 +1,6 @@ ;------------------------------------------------------------------------------
;
-; Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+; Copyright (c) 2019 - 2021, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Abstract:
@@ -32,3 +32,41 @@ %macro INCSSP_RAX 0
DB 0xF3, 0x48, 0x0F, 0xAE, 0xE8
%endmacro
+
+; NASM provides built-in macros STRUC and ENDSTRUC for structure definition.
+; For example, to define a structure called mytype containing a longword,
+; a word, a byte and a string of bytes, you might code
+;
+; struc mytype
+;
+; mt_long: resd 1
+; mt_word: resw 1
+; mt_byte: resb 1
+; mt_str: resb 32
+;
+; endstruc
+;
+; Below macros are help to map the C types and the RESB family of pseudo-instructions.
+; So that the above structure definition can be coded as
+;
+; struc mytype
+;
+; mt_long: CTYPE_UINT32 1
+; mt_word: CTYPE_UINT16 1
+; mt_byte: CTYPE_UINT8 1
+; mt_str: CTYPE_CHAR8 32
+;
+; endstruc
+%define CTYPE_UINT64 resq
+%define CTYPE_INT64 resq
+%define CTYPE_UINT32 resd
+%define CTYPE_INT32 resd
+%define CTYPE_UINT16 resw
+%define CTYPE_INT16 resw
+%define CTYPE_BOOLEAN resb
+%define CTYPE_UINT8 resb
+%define CTYPE_CHAR8 resb
+%define CTYPE_INT8 resb
+
+%define CTYPE_UINTN resq
+%define CTYPE_INTN resq
|