UM0144 datasheet(32/92 Pages) STMICROELECTRONICS

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3 ST7 Assembler

ST7 Assembler Linker

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UM0144

OBJ option

FI option

Note:

When assembling in '-fi' mode, the assembler uses the map file produced by the linker, and

no object files are generated.

Note:

When using the option -fi=<file>.map, the assembler step may fail under certain

circumstances:

If there are empty segments (Error 73). To avoid this, comment out any empty segments.

If you try to assemble a file that has not been used to produce the .map file (Error 73).

Some EXTERN labels are never used (Warning 80). To avoid this, comment the unused

EXTERN labels out.

Description:

You can specify the pathname for the generated .OBJ file, using the following

option:

Format:

ASM <file> -obj=<pathname>

Example:

ASM prog -obj=obj\prog

Forces the assembler to generate the object file obj\prog.obj.

Description:

One side effect of using a linker is that all modules are assembled separately,

leaving inter modules' cross-references to be fixed up by the linker. As a result the

assembler listing file set all unresolved references to 0, and displays a warning

character.

The '-fi' option enables you to perform an absolute patch on the desired listing.

Therefore, you must have produced a listing file (.LST) and linked your application

to compute relocations and produce a .COD file and a map file.

When you want a full listing to be generated, you must not have made any edits

since the last link (otherwise the named map-file would be 'out of date' for the

module being assembled). This is not usually a problem since full listings are only

needed after all the code has been completed. -fi automatically selects a complete

listing.

Format:

ASM <file> -fi=<file>.map

The output <file>.lst contains the absolute patches.

Example:

ASM -li ex1

(produces ex1.lst)

ASM -li ex2

(produces ex2.lst)

LYN ex1+ex2,ex

(produces ex.map, ex.cod)

(see

Chapter : Linker on page 35)

ASM ex1 -fi=ex.map

(produces new ex1.lst)

ASM ex2 -fi=ex.map

(produces new ex2.lst)

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