Abstract: A method and device for pass-by breakpoint setting and debugging. The pass-by breakpoint setting method comprises: receiving a breakpoint setting command; determining an instruction at a breakpoint in a source program code according to the breakpoint setting command; if one of the instruction at the breakpoint and an instruction prior to the instruction at the breakpoint is a relative jump instruction, setting an instruction duplicate, and setting the instruction at the breakpoint in the source program code as a first abnormal instruction.

Abstract: A method and device for pass-by breakpoint setting and debugging are disclosed. The pass-by breakpoint setting method comprises: receiving a breakpoint setting command; determining an instruction at a breakpoint in a source program code according to the breakpoint setting command; if one of the instruction at the breakpoint and an instruction prior to the instruction at the breakpoint is a relative jump instruction, setting an instruction duplicate, and setting the instruction at the breakpoint in the source program code as a first abnormal instruction. Accordingly, the memory space occupied by the duplicate can be reduced.

Abstract: A patching mechanism in a multi-core environment that includes sending an inter-core non-maskable interrupt to each target Virtual Central Processing Unit (CPU) (VCPU) in a target VCPU group, which share a code segment, so that said each target VCPU enters a patch synchronization state in response to the inter-core non-maskable interrupt. Thereafter, the patch synchronization state of said each target VCPU is monitored, and after all the target VCPUs have entered the patch synchronization state, embodiments modify a first instruction of an original function to be patched of said each target VCPU into an abnormal instruction, and outputting a patch synchronization state end notification to all the target VCPUs, so that the original function to be patched is enabled to jump to a new patch function in an exception handling process.