#123 option win64:0 with -elf64

[drizz]

It seems parameters are saved to shadow space regardless of the "option win64:0" setting.

[japheth]

In my test cases it works as expected - with "option win64:0", nothing is saved.

[drizz]

quick test compile on windows .
jwasm -c -elf64 -Fo"testasm.o" testasm.asm
objconv -fasm testasm.o testasm_dis.asm

TESTASM.ASM:
---------------------------
.x64p
option frame:auto
option win64:0;disable autosaving of register params to shadow space
option language:c;decl
option casemap:none
option procalign:16

.code
ConsoleWrite proc c FRAME uses rsi rdi lpBuffer
;LOCAL nbrw, dwLen:DWORD
ret
ConsoleWrite endp
end

// --------------------------------------------------------------------

DISASSEMBLY from OBJCONV:
---------------------------------------------------
; Disassembly of file: testasm.o
; Fri Feb 18 15:05:21 2011
; Mode: 64 bits
; Syntax: MASM/ML64
; Instruction set: 8086, x64
option dotname

public _ConsoleWrite

_text SEGMENT PARA 'CODE' ; section number 1

_ConsoleWrite PROC
mov qword ptr [rsp+8H], rcx ; 0000 _ 48: 89. 4C 24, 08
push rbp ; 0005 _ 55
mov rbp, rsp ; 0006 _ 48: 8B. EC
push rsi ; 0009 _ 56
push rdi ; 000A _ 57
add rsp, 0 ; 000B _ 48: 83. C4, 00
pop rdi ; 000F _ 5F
pop rsi ; 0010 _ 5E
pop rbp ; 0011 _ 5D
ret ; 0012 _ C3
_ConsoleWrite ENDP

_text ENDS

_data SEGMENT PARA 'DATA' ; section number 2

_data ENDS

.xdata SEGMENT ALIGN(8) 'CONST' ; section number 3

_$xdatasym label byte
db 01H, 0BH, 04H, 05H, 0BH, 70H, 0AH, 60H ; 0000 _ .....p.`
db 09H, 53H, 06H, 50H ; 0008 _ .S.P

.xdata ENDS

.pdata SEGMENT DWORD 'CONST' ; section number 4

; Error: Overlapping relocations
dq _ConsoleWrite ; 0000 _ 0000001300000000 (d)
dq _$xdatasym ; 0008

.pdata ENDS

END

NOTE:
this line:
mov qword ptr [rsp+8H], rcx ; 0000 _ 48: 89. 4C 24, 08
this line (simple "if" check for 0 i think):
add rsp, 0 ; 000B _ 48: 83. C4, 00

[japheth]

Ok, I somehow managed to ignore the mentioned -elf64 cmdline switch in the error caption.

The real problem is that keyword FRAME is NOT rejected if format is -elf64.

[drizz]

I use FRAME keyword because it provides 16 byte stack alignment.

[japheth]

> I use FRAME keyword because it provides 16 byte stack alignment.

Ups, based on your error report, I released a "fixed" v2.05rc22 which disabled FRAME ( and also the win64-SEH- directives ) if option -elf64 is given.