Date: Fri, 13 Nov 1998 21:30:44 +0200 (SAT) From: Robert Nordier <rnordier@nordier.com> To: ru@ucb.crimea.ua (Ruslan Ermilov) Cc: hackers@FreeBSD.ORG Subject: Re: FreeBSD on i386 memory model Message-ID: <199811131930.VAA12575@ceia.nordier.com> In-Reply-To: <19981113202027.A15520@ucb.crimea.ua> from Ruslan Ermilov at "Nov 13, 98 08:20:27 pm"
next in thread | previous in thread | raw e-mail | index | archive | help
Ruslan Ermilov wrote: > Hi! > > I would like to practice in writing assembler programs > under FreeBSD. > > Is there any doc/book/man which describes the FreeBSD > memory model on i386 architecture? Essentially it's just a flat protected model, and for most purposes can simply be ignored. Rather than documentation, I'd suggest looking at C startup code (src/lib/csu), i386-specific C library functions (src/lib/libc/i386), and at the output of `cc -S'. FWIW, here's a small standalone i386 assembler program: main: call .+0x5 popl %ebp subl $0x5,%ebp pushl $msg.1-msg leal msg-main(%ebp),%eax pushl %eax pushl $0x1 movl $0x4,%eax call .+0x5 lcall $0x7,$0x0 pushl $0x0 movl $0x1,%eax call .+0x5 lcall $0x7,$0x0 msg: .ascii "hello, world!\n" msg.1: -- Robert Nordier To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199811131930.VAA12575>