Asynchronous interrupt safing of prologue portions of computer programs

摘要

Processing an asynchronous interrupt of a processing entity which executes in a computer system is disclosed. An invocation stack is maintained in the computer system. The invocation stack includes a plurality of stack frames, wherein each of the stack frames has a fixed part of a predetermined length and a variable part of a variable length. An interrupt service routine is pre-defined to service the asynchronous interrupt. Processing of the asynchronous interrupt is performed by determining an address of a next available memory location in the invocation stack. A starting address in the invocation stack for a new stack frame is determined by adding a predetermined "skip" value to the next available memory location address. The new stack frame is to be used by the interrupt service routine. Then, a portion of the invocation stack starting from the starting address is allocated for the new stack frame, and the new stack frame is generated in the invocation stack using the allocated portion of the invocation stack.