"set architecture" shows some valid arguments, (gdb) set architecture Requires an argument. Valid arguments are rs6000:6000, rs6000:rs1, rs6000:rsc, rs6000:rs2, powerpc:common64, powerpc:common, powerpc:603, powerpc:EC603e, powerpc:604, powerpc:403, powerpc:601, powerpc:620, powerpc:630, powerpc:a35, powerpc:rs64ii, powerpc:rs64iii, powerpc:7400, powerpc:e500, powerpc:e500mc, powerpc:e500mc64, powerpc:MPC8XX, powerpc:750, powerpc:titan, powerpc:vle, powerpc:e5500, powerpc:e6500, auto. but some of them are not recognized. (gdb) set architecture powerpc:e500mc Architecture `powerpc:e500mc' not recognized. The target architecture is set automatically (currently rs6000:6000) (gdb) set architecture powerpc:EC603e Architecture `powerpc:EC603e' not recognized. The target architecture is set automatically (currently rs6000:6000) (gdb) set architecture powerpc:e500mc64 Architecture `powerpc:e500mc64' not recognized. The target architecture is set automatically (currently rs6000:6000) (gdb) set architecture powerpc:titan Architecture `powerpc:titan' not recognized. The target architecture is set automatically (currently rs6000:6000) (gdb) set architecture powerpc:vle Architecture `powerpc:vle' not recognized. The target architecture is set automatically (currently rs6000:6000) (gdb) set architecture powerpc:e5500 Architecture `powerpc:e5500' not recognized. The target architecture is set automatically (currently rs6000:6000) (gdb) set architecture powerpc:e6500 Architecture `powerpc:e6500' not recognized. The target architecture is set automatically (currently rs6000:6000)
See Bug 19797. *** This bug has been marked as a duplicate of bug 19797 ***