Author: wmb Date: Wed Jul 6 04:17:56 2011 New Revision: 2329 URL: http://tracker.coreboot.org/trac/openfirmware/changeset/2329
Log: ARM - fixed hang when dividing by 0.
Modified: cpu/arm/muldiv.fth
Modified: cpu/arm/muldiv.fth ============================================================================== --- cpu/arm/muldiv.fth Sat Jul 2 08:07:31 2011 (r2328) +++ cpu/arm/muldiv.fth Wed Jul 6 04:17:56 2011 (r2329) @@ -97,8 +97,11 @@ \ r0 / tos = r0.rem tos.quot code (32/32division) mov r3,#1 -\ cmp tos,#0 + cmp tos,#0 \ ' divide-error dolink eq branch + mvneq tos,#0 + moveq pc,lk + begin cmp tos,#0x80000000 cmpcc tos,r0 @@ -118,13 +121,18 @@ end-code
code (u64division) + orrs r4,r2,r3 +\ ' divide-error bleq * + mvneq r4,#0 \ Max out quotient for divide by 0 + mvneq r5,#0 + moveq pc,lk + stmdb sp!,{r7,r8,r9} mov r6,#0 mov r7,#1 mov r4,#0 mov r5,#0 - orrs r8,r2,r3 -\ ' divide-error bleq * + begin cmp r2,#0x80000000 u< if