AN3350 datasheet(55/185 Pages) STMICROELECTRONICS

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AN3350

Working with the assembler

Doc ID 018512 Rev 2

55/185

10.2.2

File extensions

In case the type of file makes a difference to the tool, the type is taken from the file’s suffix.

Extensions and their meanings are shown in Table 3.

In order to force one of these types on an arbitrary given input file, the option -ex can be

used with one of the regular extensions known to represent the requested type. For

example, -ex .o is used to convince etpu_bins that its input is an Elf relocatable object

file.

When no output format (-elf or -srx) is explicitly selected, as in the example etpu_bins

--asm file.s

, the tool will check syntax validity and no output will be produced. When the

-srx

switch is added, the created file will have the extension .srx (not .srec).

10.2.3

Command-line syntax

The command-line syntax for the assembler is:

etpu_bins --asm [options] inputFile

The assembler does not require special filename extensions for input file names and ignores

the actual filename extension specifed on the command line. Instead, the assembler uses

the base filename to append appropriate extensions when generating the output file names.

For example, this command line causes the assembler to assemble file.s into an S-

record file named file.srx:

etpu_bins --asm -srx file.s

The assembler normally reports error messages to stderr, but you can redirect error

messages to a file by supplying the -err filepath command-line switch. The assembler

indicates the total number of error messages in the tool exit status.

Note:

To detect and report invalid instruction sequences, use the -lint command-line switch.

Table 3.

File extension meanings

Extensions

Type of file

.s, .asm, .uasm, .ucode

An assembly source file

A C or assembly header file

A C source file

.o, .obj, .eln

An Elf relocatable file

.elf, .eld

An Elf executable file

.a, .lib

A library file

.lcf

A linker command file

A makefile dependency file

.map

An assembly map text file

.srx, .srec

An S-records file

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