wok rev 22019

linld: ipxe support (again)
author Pascal Bellard <pascal.bellard@slitaz.org>
date Sat Oct 19 21:09:13 2019 +0200 (2019-10-19)
parents 6aff6b383295
children fbe9e0e1400d
files linld/stuff/src/JUMP.ASM
line diff
     1.1 --- a/linld/stuff/src/JUMP.ASM	Sat Oct 19 17:56:32 2019 +0100
     1.2 +++ b/linld/stuff/src/JUMP.ASM	Sat Oct 19 21:09:13 2019 +0200
     1.3 @@ -98,49 +98,56 @@
     1.4  		mov	sp,0A000h
     1.5  		extrn	_rm_size:word
     1.6  		ifdef NO386
     1.7 -		mov	si,offset _rm_size-2	; _rm_size, _pm_high, _rm_buf
     1.8 +		mov	si,offset _rm_size-4	; _rm_size, _pm_high, _rm_buf
     1.9 +		lodsw
    1.10 +		xchg	ax,bx
    1.11  		lodsw
    1.12  		push	ax			; _csip high
    1.13 -		push	[word si-4]		; _csip low
    1.14 -		lodsw
    1.15 +		push	bx			; _csip low
    1.16 +		lodsw				; skip _rm_size
    1.17  		else
    1.18  		mov	si,offset _rm_size+2	; _rm_size, _pm_high, _rm_buf
    1.19  		push	[dword si-6]		; _csip
    1.20  		endif
    1.21  		lodsb				; _pm_high
    1.22 +
    1.23 +		ifdef	NO386
    1.24 +		mov	cx,ss
    1.25 +		add	ch,9
    1.26 +		push	cx			; topseg()+0x0900
    1.27 +		else
    1.28 +		push	9800h+(4096/16)		; 4096 bytes for cmdline
    1.29 +		endif
    1.30 +
    1.31  		extrn	_cmdline:word
    1.32  		mov	si,[_cmdline]
    1.33  		mov	di,8000h
    1.34  		mov	ch,10h			; 4k
    1.35  		rep
    1.36  		  movsb
    1.37 -		ifdef	NO386
    1.38 -		mov	bx,ss
    1.39 -		add	bh,9
    1.40 -		push	bx			; topseg()+0x0900
    1.41 -		else
    1.42 -		push	9800h+(4096/16)		; 4096 bytes for cmdline
    1.43 -		endif
    1.44 -		cmp	al,cl			; load high ?
    1.45 -		pushf
    1.46 -		; finish loading
    1.47 -		extrn   @last_ditch$qv:near
    1.48 -		mov	ax,[ss:024Ch]
    1.49 -		jne	@@notzimage
    1.50 -@@isipxe:
    1.51 +
    1.52 +		or	cl,al			; load high ?
    1.53 +		inc	cx
    1.54 +		push	cx
    1.55 +		mov	ax,[word ss:024Ch]
    1.56 +		xor	ax,2b30h		; ipxe ?
    1.57 +		loopne	@@notipxe
    1.58 +
    1.59  		dos_shutdown			; clear si; ds=0
    1.60  		push	cs
    1.61  		pop	ds
    1.62 +		; finish loading
    1.63 +		extrn   @last_ditch$qv:near
    1.64  		push	cs
    1.65  		call	@last_ditch$qv
    1.66 -@@notzimage:
    1.67 -		xor	ax,2b30h
    1.68 -		je	@@isipxe
    1.69 -		popf
    1.70 +
    1.71 +@@notipxe:
    1.72 +		pop	cx
    1.73 +		pop	es			; min 2048 bytes for stack
    1.74 +		loop	@@isbzimage
    1.75 +
    1.76  		; self move
    1.77  		;cld
    1.78 -		pop	es			; min 2048 bytes for stack
    1.79 -		jne	@@isbzimage
    1.80  		extrn	gdt_data
    1.81  		mov	cx,offset gdt_data+8
    1.82  		xor	di,di			;  A000 -9000 -0800(>movedend)