Re: [TUHS] Introduction

Oliver: Right, it seems that I mistransliterated the code in a hurry or confusion. I notice that on prf.c *adx is a pointer to be assigned to s, whereas in sys2.c uap->linkname is the pointer itself thas is assigned to u.u_dirp.l So my initial transliteration was wrong as I was assigning *uap->linkname instead of uap->linkname. Reviewing the assembler you submitted I notice it looks almost like what you wanted but for @rr2 instead of rr2 so it might have been the extra * I wrongly added in front of the parenthesized & expression and the erroneously placed parenthesis (which I also got wrong) the reason for not getting what you wanted. If on prf.c you have in printf register unsigned int *adx; char *s; adx = &x1; ... s = (char *) * adx; and was recoded on WEGA in printfv register unsigned *adx; register char *s; adx = x1; ... s = (char *)(*(long *)adx & 0x7F00FFFF); then maybe the right code on sys.c would be a change from caddr_t u.u_dirp; /* char *, from param.h user.h */ register struct a { char *target; char *linkname; } *uap; ... u.u_dirp.l = (caddr_t) uap->linkname; to caddr_t u.u_dirp.l; /* char *, from param.h user.h */ register struct a { char *target; char *linkname; } *uap; ... u.u_dirp.l = (caddr_t) ) ((long *) uap->linkname & 0x7F00FFFF); Note also the difference in parenthesis usage with what you said you had tried on http://pofo.de/P8000/problems.php u.u_dirp.l = (caddr_t)(((long)uap->linkname) & 0x7F00FFFF); I fear that I was too tired when I wrote my previous posting and made two many mistakes. Anyway, the first step should be to check what prf.c generates as assembler at these & lines when compiled. If it matches the sample code you mention you have in other places then it means the same device was used to generate it (which I would guess is the case) and then it should be a matter of thinking clearly of what is being assigned. I do believe the surviving trace in prf.c is the key to understanding the problem assembly code. j On Mon, 23 Jun 2008 18:11:01 +0200 Oliver Lehmann <lehmann(a)ans-netz.de> wrote: -- These opinions are mine and only mine. Hey man, I saw them first! José R. Valverde De nada sirve la Inteligencia Artificial cuando falta la Natural