On Tue, 6 Aug 2013 14:33:52 -0400, John Parke wrote: >I have provided prolog code: > >LARL R15,@@LIT@2 >Using @@LIT@2,R15
Why do you set R15 here, before saving the caller's registers? Note that register 15 is not a good one to use for a base register. >STMG R14,R12,8(R13) >LGR R9,R1 Save R1 >LGR R2,R0 >LGHI R0,312 >LA R1,1 >SLL R1,20 >AGR R0,R1 >Storage Obtain >LGR R15,R1 In case STORAGE didn't clobber your base register, the LGR did, but the USING is still in effect. >STG R15,136(,R13) Addr of Next Savearea >STG R13,128(,R15) Addr of Previous Savearea >LGR R13,R15 Point R13 to this DSA It looks like you intend to use F4SA format to save your caller's registers, but you have not marked your save area with "F4SA" to indicate that you have done that. -- Tom Marchant
