Signed-off-by: Ray Ni <ray...@intel.com>
Cc: Michael D Kinney <michael.d.kin...@intel.com>
Cc: Liming Gao <gaolim...@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang....@intel.com>
---
MdePkg/Include/Ia32/Nasm.inc | 38 ++++++++++++++++++++++++++++++++++++
MdePkg/Include/X64/Nasm.inc | 38 ++++++++++++++++++++++++++++++++++++
2 files changed, 76 insertions(+)
diff --git a/MdePkg/Include/Ia32/Nasm.inc b/MdePkg/Include/Ia32/Nasm.inc
index 31ce861f1e..017fe5ffd8 100644
--- a/MdePkg/Include/Ia32/Nasm.inc
+++ b/MdePkg/Include/Ia32/Nasm.inc
@@ -20,3 +20,41 @@
%macro INCSSP_EAX 0
DB 0xF3, 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 resd
+%define CTYPE_INTN resd
diff --git a/MdePkg/Include/X64/Nasm.inc b/MdePkg/Include/X64/Nasm.inc
index 42412735ea..b48d8680bb 100644
--- a/MdePkg/Include/X64/Nasm.inc
+++ b/MdePkg/Include/X64/Nasm.inc
@@ -20,3 +20,41 @@
%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
--
2.27.0.windows.1
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