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Message-ID: | <3C432822.C2622E1A@yahoo.com> |
From: | CBFalconer <cbfalconer AT yahoo DOT com> |
Organization: | Ched Research |
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Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: ASM syntax |
References: | <a1uvh5$bi0$1 AT sirius DOT dur DOT ac DOT uk> |
Lines: | 22 |
Date: | Mon, 14 Jan 2002 19:03:47 GMT |
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NNTP-Posting-Date: | Mon, 14 Jan 2002 19:03:47 GMT |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
Andrew Fairburn wrote: > > dont know if this is teh right place to put this but i was hoping someone > could give me hand with the at&t assembler syntax. > > ive been writing a function in assembler code for a real mode callback. The > code needs to take the ss:sp, of where the program was when this interupt > function is called, from the register pair ds:si then. It uses this to read > the cs:ip address left on the stack when the interupt was called and then > places it back in a memory address pointed to by the register pair es:di. It > then returns with an IRET. unfortunatley my code doesnt work:- Why would you want to exit with an IRET? Did you call it through an interrupt? That pops the flags off the stack before doing a RET. -- Chuck F (cbfalconer AT yahoo DOT com) (cbfalconer AT XXXXworldnet DOT att DOT net) Available for consulting/temporary embedded and systems. (Remove "XXXX" from reply address. yahoo works unmodified) mailto:uce AT ftc DOT gov (for spambots to harvest)
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