64-Bit Compile Error (language type must be specified)
I am using the 64-bit version of the Visual C++ 7.1 libraries and build tools and I am receiving an error when compiling the assembly files which I have been unable to fix and am hoping that somebody will be able to tell me how to fix. The ML64.EXE compiler will not accept .586p or .model. I believe the language type needs to be in the PROC statement.
ml64.exe /c /Cx ".\asm\MD4_asm.asm"
Microsoft (R) Macro Assembler (AMD64) Version 8.00.40121
Copyright (C) Microsoft Corporation.All rights reserved.
Assembling: .\asm\MD4_asm.asm
.\asm\MD4_asm.asm(1) : error A2008: syntax error : .
.\asm\MD4_asm.asm(2) : error A2008: syntax error : .model
.\asm\MD4_asm.asm(178) : error A2119: language type must be specified
.\asm\MD4_asm.asm(180) : error A2008: syntax error : pusha
.\asm\MD4_asm.asm(238) : error A2008: syntax error : popa
NMAKE : fatal error U1077: 'ml64.exe' : return code '0x1'
Stop.
Line 1-2
.586p
.modelflat, C
Lines 178-183
MD4_Add_p5PROCPUBLIC, _this:DWORD, _Data:DWORD, _nLength:DWORD
pusha
__thistextequ<[esp+36]>; different offset due to pusha
__Datatextequ<[esp+40]>
__nLengthtextequ<[esp+44]>
[4641 byte] By [
CyberGuy] at [2007-12-16]
there is no language types for x64 :-)
it was likely a bug that you got this error in the past. we have newer versions of the assembler which will not emit this error under ml64.
X64 only supports 1 calling convention for microsoft windows which is the x64 calling convention (hibred of fastcall). Thus, there is no language type to specify.
Also, pusha is not a valid opcode for 64bit processors.
I have this code...which assembles fine. if it doesnt work for you then you need an updated assembler.
.code
MD4_Add_p5 PROC PUBLIC, _this:DWORD, _nLength:DWORD
__this textequ <[esp+36]> ; different offset due to pusha
__nLength textequ <[esp+44]>
push rax
MD4_Add_p5 endp
end
Forget all x86 assembler diretives your mentioned. Don't use 3DNOW and MMX only SSE ( it's not debuggable under VS 2005 Whidbey ). All is fastcall to 4'th parameter ( after 4Th param you can call param directly from stack ):
;RAX Volatile Return value register.
;RCX Volatile First integer argument.
;RDX Volatile Second integer argument.
;R8 Volatile Third integer argument.
;R9 Volatile Fourth integer argument.
;R10:R11 Volatile Must be preserved as required by caller; used in syscall/sysret instructions.
;R12:R15 Nonvolatile Must be preserved by called function.
;RDI Nonvolatile Must be preserved by called function.
;RSI Nonvolatile Must be preserved by called function.
;RBX Nonvolatile Must be preserved by called function.
;RBP Nonvolatile Can be used as a frame pointer. Must be preserved by called function.
;RSP Nonvolatile Stack Pointer.
;XMM0 Volatile First FP argument.
;XMM1 Volatile Second FP argument.
;XMM2 Volatile Third FP argument.
;XMM3 Volatile Fourth FP argument.
;XMM4:XMM5 Volatile Must be preserved as required by caller.
;XMM6:XMM15 Nonvolatile Must be preserved as required by called function.
look here:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/kmarch/hh/kmarch/64bitAMD_8e951dd2-ee77-4728-8702-55ce4b5dd24a.xml.asp
Project template:
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Garfield 2005 - 2008
;
; History: 07/2005 initial development
;
;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
include Include.inc
_CONST SEGMENT PARA 'CONST'
; const goes here
_CONST ENDS
_DATA SEGMENT PARA 'DATA'
; data here
_DATA ENDS
_TEXT SEGMENT PARA 'CODE'
;calling RCX, RDX, R8, R9
; pData -> RCX
; nSize -> RDX
; pData2 -> R8
; pData3 -> R9
; nCount -> Stack
ALIGN 16
PUBLIC Function
Function PROC pData: PTR, nSize: QWORD, pData2, pData3, nCount: WORD
PUSH RDI
PUSH RSI
PUSH RBX
; you can directly
MOV RBX, nCount
@END:
POP RBX
POP RSI
POP RDI
RET
Function ENDP
_TEXT ENDS
END
As i already posted plain asm optimization gives you under x64 only 5-15 percent speed advantage coz the x64 compiler generates heavy SSE-SSE2 code:
http://forums.microsoft.com/msdn/ShowPost.aspx?PostID=69060
I would only code in C coz the compiler uses SSE for you. C is much more readable than ASM.
Bye
Martin
