Signal handling between programs associated with different addressing modes

A system comprising:

• a memory having computer readable instructions;
• and
• one or more processors for executing the computer readable instructions, the computer readable instructions controlling the one or more processors to perform operations comprising:
• based on a signal occurring during execution of a first program in a first runtime environment, wherein the first program and the first runtime environment are associated with a first addressing mode:
• invoking a first signal exit routine associated with the first addressing mode;
• allocating a signal information area (SIA) by the first signal exit routine;
• calling a second signal exit routine associated with a second addressing mode that is different from the first addressing mode with an address of the SIA;
• allocating a mirror SIA by the second signal exit routine;
• handling the signal;
• and
• resuming execution based on the handling of the signal.

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform operations comprising:

• based on a signal occurring during execution of a first program in a first runtime environment, wherein the first program and the first runtime environment are associated with a first addressing mode:
• invoking a first signal exit routine associated with the first addressing mode;
• allocating a signal information area (SIA) by the first signal exit routine;
• calling a second signal exit routine associated with a second addressing mode that is different from the first addressing mode with an address of the SIA;
• allocating a mirror SIA by the second signal exit routine;
• handling the signal;
• and
• resuming execution based on the handling of the signal.