[edk2-devel] [PATCH v2 1/3] MdePkg/Nasm.inc: add macros for C types used in structure definition

[Ni, Ray]

Signed-off-by: Ray Ni <ray.ni at intel.com>
Cc: Michael D Kinney <michael.d.kinney at intel.com>
Cc: Liming Gao <gaoliming at byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu at 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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