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Mar 3, 2012 — The system trap handler is a component of the system software that receives control when the conditions specified in a Trap instruction are Appendix C—Simplified Mnemonics for PowerPC Instructions String instructions are not implemented on the e500; therefore, trap emulation must be. Nov 12, 2011 — Instruction breakpoints are typically realised with the TRAP instruction or with the IABR debug hardware register. Branch and flow control instructions—These include branching instructions, CR logical instructions, trap instructions, and other instructions that affect Instruction addresses are always assumed to be word aligned; the PowerPC processors ignore the two low-order bits of the generated branch target address. Book E is a PowerPC™ architecture definition for embedded processors that instructions in hardware but traps them so they can be emulated by software. 0; /* Remember if we were enabled */ /* Handle kernel traps first */ if This is to allow logging or * tracing of emulated instructions.The PowerPC instruction set is described in Chapter 4, “Addressing Modes Trap—A trap type program exception is generated when any of the. twi or ti (Trap Word Immediate) instruction. Purpose. Generates a program interrupt when a specified condition is true. Syntax. Bits, Value Generates a program interrupt when a specified condition is true. The tw and t instructions compare the contents of general-purpose register (GPR) RA with the