Texas Instruments TMS470R1x manual Getting Started With the Code Generation Tools

Getting Started With the Assembler and Linker

3)Now enter the following command to assemble file2.asm: asm470 file2.asm ±l

This time, the assembler creates an object file called file2.obj. The ±l (lowercase L) option tells the assembler to create a listing file; the listing file for this example is called file2.lst. It is not necessary to create a listing file, but it gives you information and assures you that the assembly has resulted in the desired object code. The listing file for this example is shown in Example 5±3.

Example 5±3. file2.lst, the Listing File Created by asm470 file2.asm ±l

TMS470 COFF Assembler			Version 1.20	Sat Feb 8 15:22:13 1997
Copyright (c) 1995±1996			Texas Instruments Incorporated
file2.asm				PAGE	1
1
2			.global inclw
3
4	00000000	E2977001	inclw: ADDS	r7, r7, #1
5	00000004	22966001	ADDCSS	r6, r6, #1
6	00000008	E1A0F00E	MOV	pc, lr
7
8			.end

No Errors, No Warnings

4)Now enter the following command to link file1.obj and file2.obj: lnk470 file1 file2 ±m lnker2.map ±o prog.out

The lnk470 command invokes the linker. The input object files are file1.obj and file2.obj. (If the input file extension is .obj, you do not have to specify the extension; the linker uses .obj as the default.) The linker combines file1.obj and file2.obj to create an executable object module called prog.out. The ±o option supplies the name of the output module. Example 5±4 shows the map file resulting from this operation. (The map file is produced only if you use the ±m option.)

Getting Started With the Code Generation Tools 5-3