Automatic creation of C to assembler interface

Details Automatic creation of C to assembler interface Automatic creation of C to assembler interface

1998-01-06

2000-01-11

Hafiz, Tariq R.

G06F 944

Patent

active

06014517&

ABSTRACT:
A system for parsing comments in assembler language source code to identify input and output parameters and script them into wrapper code that transforms the parameters from C (or other higher level language) conventions to assembler conventions for entry to the assembler program and from assembler conventions to C conventions for exit from the assembler program. The comment parser follows the syntax conventions of the assembler to identify text that is intended to be comments. Within the comment text, the comment parser searches for user specified defining terms such as "input", "output", or "at entry", and "at exit", which indicate that one or more input or output parameters are described. Next the comment parser searches for nearby formatters, such as obvious register references "d3" or "a4" in one implementation. The comment parser saves the comments and associated registers in an associative array. The wrapper scripter then uses the associative array to script a wrapper for this assembler program that will reformat the inputs and outputs appropriately. The resulting wrapper is checked by the programmer for errors, and if none are found, is used as the wrapper for the interface.

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