REMOVE THIS EMAIL ADDRESS
----- Original Message ----- From: <mspgcc-users-requ...@lists.sourceforge.net> To: <mspgcc-users@lists.sourceforge.net> Sent: Wednesday, 27 October 2004 1:22 Subject: Mspgcc-users digest, Vol 1 #835 - 3 msgs > Send Mspgcc-users mailing list submissions to > mspgcc-users@lists.sourceforge.net > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.sourceforge.net/lists/listinfo/mspgcc-users > or, via email, send a message with subject or body 'help' to > mspgcc-users-requ...@lists.sourceforge.net > > You can reach the person managing the list at > mspgcc-users-ad...@lists.sourceforge.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Mspgcc-users digest..." > > > Today's Topics: > > 1. Inline assembler pointer parameter (Dieter Teuchert) > 2. HW multiplier issues. (Dmitry) > 3. Re: Inline assembler pointer parameter (Dmitry) > > --__--__-- > > Message: 1 > Date: Tue, 26 Oct 2004 17:09:17 +0200 > From: Dieter Teuchert <die...@cadt.de> > To: mspgcc-users@lists.sourceforge.net > Subject: [Mspgcc-users] Inline assembler pointer parameter > Reply-To: mspgcc-users@lists.sourceforge.net > > Does anybody know how to insert a pointer into an inline assembler sequence? > The following works but loads registers R13..R15 with data not with > pointers. > > void _reset_vector__(void) { > > ... > // zero uninitialized RAM > asm( " \n\ > mov %0,r15 ; load r15 with end of .text segment \n\ > mov %1,r14 ; load ram start \n\ > mov %2,r13 ; end of data segment \n\ > cmp r14,r13 \n\ > jeq Lend_of_data_loop \n\ > Lcopy_data_loop: \n\ > ; copy data from @r15 to @r14 \n\ > mov.b @r15+,@r14 ; move one byte \n\ > inc r14 \n\ > cmp r13,r14 ; check if end of data reached \n\ > jlo Lcopy_data_loop \n\ > Lend_of_data_loop: \n\ > " > : > : "m" (_etext), "m" (__data_start), "m" (_edata) > : "r13", "r14", "r15"); > > ... > } > > I tried the sequence "i" (&_etext) , but that is an error. > Thanks in advance! > > > > --__--__-- > > Message: 2 > From: Dmitry <di...@spec.ru> > To: mspgcc-users@lists.sourceforge.net > Date: Tue, 26 Oct 2004 22:13:28 +0400 > Subject: [Mspgcc-users] HW multiplier issues. > Reply-To: mspgcc-users@lists.sourceforge.net > > Fellows, > there were some issues regarding HW multiplier. > Fixed. > the fix applies to 3.2.X only. (gcc-3.3 in cvs) > > have fun > ~d > > > --__--__-- > > Message: 3 > From: Dmitry <di...@spec.ru> > To: mspgcc-users@lists.sourceforge.net > Subject: Re: [Mspgcc-users] Inline assembler pointer parameter > Date: Tue, 26 Oct 2004 22:27:40 +0400 > Reply-To: mspgcc-users@lists.sourceforge.net > > Do not pass _etext, _edata, etc. to asm() operands. > Put them in asm code. > > The result assembly should look like > mov #_etext,r15 > > If you really want to put a pointer to _etext somewhere, just do the > following: > > extern int _etext; > int x; > x = &_etext; > > cheers, > ~d > > On Tuesday 26 October 2004 19:09, Dieter Teuchert wrote: > > Does anybody know how to insert a pointer into an inline assembler > > sequence? The following works but loads registers R13..R15 with data not > > with pointers. > > > > void _reset_vector__(void) { > > > > ... > > // zero uninitialized RAM > > asm( " \n\ > > mov %0,r15 ; load r15 with end of .text segment \n\ > > mov %1,r14 ; load ram start \n\ > > mov %2,r13 ; end of data segment \n\ > > cmp r14,r13 \n\ > > jeq Lend_of_data_loop \n\ > > Lcopy_data_loop: \n\ > > ; copy data from @r15 to @r14 \n\ > > mov.b @r15+,@r14 ; move one byte \n\ > > inc r14 \n\ > > cmp r13,r14 ; check if end of data reached \n\ > > jlo Lcopy_data_loop \n\ > > Lend_of_data_loop: \n\ > > " > > > > : "m" (_etext), "m" (__data_start), "m" (_edata) > > : "r13", "r14", "r15"); > > > > ... > > } > > > > I tried the sequence "i" (&_etext) , but that is an error. > > Thanks in advance! > > > > > > > > ------------------------------------------------------- > > This SF.net email is sponsored by: IT Product Guide on ITManagersJournal > > Use IT products in your business? Tell us what you think of them. Give us > > Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more > > http://productguide.itmanagersjournal.com/guidepromo.tmpl > > _______________________________________________ > > Mspgcc-users mailing list > > Mspgcc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/mspgcc-users > > > > --__--__-- > > _______________________________________________ > Mspgcc-users mailing list > Mspgcc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mspgcc-users > > > End of Mspgcc-users Digest >
