Method for converting an object code into a program code

• US 6,279,150 B1
• Filed: 02/28/2000
• Issued: 08/21/2001
• Est. Priority Date: 09/01/1997
• Status: Expired due to Term

• Current Assignee: Fujitsu Siemens Computers GmbH (Fujitsu Limited)
• Original Assignee: Siemens Nixdorf Informationssysteme AG (Siemens AG)
• Inventors: Bachmann, Werner
• Primary Examiner(s): Powell, Mark R.
• Assistant Examiner(s): Booker, Kelvin
• Application Number:
  US09/486,522
• Time in Patent Office: 540 Days
• Field of Search: 717/5, 717/7
• US Class Current: 717/136
• CPC Class Codes: G06F 8/52 Binary to binary

Abstract

A method for converting an object code (OC1) for a source hardware (M1) into an equivalent program code (PC2) that comprises a program part (PT2) and a data part (DT2), whereby a code transformer (CT) analyzes each command of the object code (OC1) for the source hardware (M) and generates at least one corresponding entry in the program part (PT2) of the program code (PC2) from it is developed in that at least one data part (DT1) of the object code (OC1) for the source hardware (M1) and at most the complete object code (OC1) for the source hardware (M1) is accepted into the data part (DT2) of the program code (PC2). Such a method is flexible and offers high efficiency both in the conversion as well as in the running of the converted program code (PC2).

Claims

1. A method for converting an object code for a source hardware into an equivalent program code compatible with a target hardware and that comprises a program part and a data part, comprising the steps of:

analyzing, by a code transformer, each command of said object code for said source hardware;

generating a corresponding entry from said command of said object code in said program part of said the program code;

accepting a part of said object code for said source hardware into said data part of said program code wherein the part of said object code for said source hardware accepted into the data part of said program code corresponds to a data part of said object code for said source hardware;

generating a source code of a high-level programming language as a program part of said program code;

partially retaining access into said data structures of said object code for said source hardware that are contained in said data part of said program code in said source code; and

converting registers of said source hardware as variables of said high-level programming language.

2. A method according to claim 1, further comprising the step of forming said data part of said converted program code exclusively by parts of said object code for said source hardware.

3. A method according to claim 1, further comprising the step of generating a source code of the C-language as a program part of said converted program code.

4. A method according to claim 3, further comprising the step of converting predetermined commands of said object code for said source hardware as a function or procedure calls of said high-level programming language.

5. A method according to claim 1, further comprising the step of sequencing branch commands of said object code for said source hardware utilizing a branch table of said program code.

6. A method according to claim 1 further comprising the step of analyzing said object code for said source hardware in order to identify a data part of said object code for said source hardware.

7. A method according claim 1, further comprising the step of enabling branches into said generated program code or out of said generated program code via a link part of said generated program code.

8. A method according to claim 1, further comprising the step of converting said generated program code by compilers or assemblers or linking into an object code executable on said target hardware.

9. A method for converting an object code for a source hardware into an equivalent program code compatible with a target hardware and that comprises a program part and a data part, comprising the steps of:

analyzing, by a code transformer, each command of said object code for said source hardware;

generating a corresponding entry from said command of said object code in said program part of said the program code;

accepting a part of said object code for said source hardware into said data part of said program code wherein the part of said object code for said source hardware accepted into the data part of said program code corresponds to a data part of said object code for said source hardware;

generating a source code of a high-level programming language as a program part of said program code;

partially retaining access into said data structures of said object code for said source hardware that are contained in said data part of said program code in said source code;

wherein said method is utilized for converting non-privileged object code.

10. A method according to claim 9, further comprising the step of converting registers of said source hardware as variables of said high-level programming language.