On 6 December 2013 13:22, Paul Gilmartin <paulgboul...@aim.com> wrote: > > Would Metal C remove the need for an Assembler stub?
In this case, probably. But Metal C is not a general substitute for assembler language, even though you can have inline assembler statements. Notably, the compiler has several hard-coded ideas of what registers it can use, e.g. R3 addresses a literal pool, it assumes that R13 points to a stack, and it may use R10 and R11 for constants. Unlike PL/X there appears to be no #PRAGMA or the like to tell the compiler to stop using a register for a while, so if you have a non-standard linkage (say BASR R10,R11) you will have some trouble. (Metal C does have "clobber lists" of registers when using the __asm() construct, but they are so clunky as to be virtually unusable and unreadable.) Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
