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Guys: I've come up with a workaround: int _len asm("%d1"); This puts _len into %d1. By assigning whatever it is I'm trying to get into %d1 to _len, I get the result I'm looking for. This accomplishes the goal, but forces me to allocate locals to get there. For my immediate problem this is ok, but long-term I would like to understand what I'm doing wrong in the code below. Suggestions welcome, b.g. On Sat, Jan 05, 2002 at 09:37:57PM -0600, William A. Gatliff wrote: > Guys: > > > Maybe it's just too late in the evening, maybe I'm just not reading > the info pages closely enough... > > I'm trying to do this on a CPU32, m68k-elf-gcc (2.95.3): > > *** > int len; > ... > __asm__ __volatile__ ("move.l %0, %d1" : : "r" (len) : "%d1"); > > [bgat@mars] m68k-elf-gcc -c -mcpu32 test.c > test.c:41: invalid 'asm': operand number out of range > *** > > Seems like gcc is getting tripped up on the %d1 in the opcode, > thinking it is an operand number instead of a register name. Turning > the "%d1" into just "d1" makes gcc happy, but causes an unresolved > reference to "d1" at link time. The assembler doesn't know it is a > register (which makes sense). > > I'm binding to an asm API, so I have to call out the register name. > > I can't be the first person to have this problem. What's the solution? > > Or better yet, what section of the infopages do I need to re-read? > > > Thanks! > > > b.g. > -- > Bill Gatliff > bgat@billgatliff.com > > ------ > Want more information? See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/ > Want to unsubscribe? Send a note to crossgcc-unsubscribe@sources.redhat.com > -- Bill Gatliff bgat@billgatliff.com ------ Want more information? See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/ Want to unsubscribe? Send a note to crossgcc-unsubscribe@sources.redhat.com
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