Memory Move (MEMMOVE)

Built-in number for MEMMOVE is 16.
MEMMOVE (
         target_string   : address of aggregate(*)
         source_string   : address of aggregate(*)
         copy_length     : unsigned binary(4) value which specifies the
                           number of bytes to copy
) :   space pointer(16) to the target string

Description

A copy from the storage specified by source string to the storage specified by target string is performed. Copy length specifies the number of bytes to copy. It is assumed that sufficient storage exists at the target string location to receive the specified number of bytes.

Pointers can be copied using this function. However, the source and target strings must be like-aligned.

Results are defined if the storage locations specified by target string and source string overlap. The result is equivalent to copying the source string first to a temporary location and then from the temporary location to the target string.

Authorization Required

• None

Lock Enforcement

• None

Exceptions

06 Addressing

• 0601 Space Addressing Violation
• 0602 Boundary Alignment

1C Machine-Dependent

• 1C03 Machine Storage Limit Exceeded

20 Machine Support

• 2002 Machine Check
• 2003 Function Check

24 Pointer Specification

• 2401 Pointer Does Not Exist

2E Resource Control Limit

• 2E01 User Profile Storage Limit Exceeded

44 Protection Violation

• 4401 Object Domain or Hardware Storage Protection Violation
• 4402 Literal Values Cannot Be Changed