From owner-freebsd-hackers Wed May 5 18:47:18 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from sol (cs1-gw.cs.binghamton.edu [128.226.171.72]) by hub.freebsd.org (Postfix) with SMTP id B2BCF158EE for ; Wed, 5 May 1999 18:47:15 -0700 (PDT) (envelope-from zzhang@cs.binghamton.edu) Received: from localhost (zzhang@localhost) by sol (SMI-8.6/8.6.9) with SMTP id VAA11838 for ; Wed, 5 May 1999 21:36:38 -0400 Date: Wed, 5 May 1999 21:36:38 -0400 (EDT) From: Zhihui Zhang To: freebsd-hackers@freebsd.org Subject: What is define(...)dnl in a .m4 file Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I find in the file boot1.m4 under /usr/src/sys/boot the following line: define(_bp_,0x6)dnl define(_bx_,0x7)dnl define(o16,`.byte 0x66')dnl define(addbr1,`.byte 0x0; .byte 0x40 | ($1 << 0x3) | $3; .byte $2')dnl I assume boot1.m4 is an assembly file but I can not find any information on define(...)dnl in the GNU Assembler manual (info files). Please tell me how a .m4 file is used and what does "define" mean exactly. Thanks for your help. -------------------------------------------------- Zhihui Zhang. Please visit http://www.freebsd.org -------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message