Epson S5U1C63000A - Manual (Page 325)

Assembler as63 (1) Development Tools
Outline
Converts the mnemonic of the source files into object codes (machine
language) of the S1C63000. The results are output in a relocatable object file.
This assembler includes preprocessing functions such as macro definition/call,
conditional assembly, and file-include functions.
Flowchart
Assembler
as63
file.s
Assembly source file
file.o file.ms file.lst
Object file Relocatable
list file
file.err
Error file Preprocessed
source file
to Linker
Start-up Command Usage
Usage: as63 [options] <file name>
Options: -d <symbol> Add preprocess definition
-e Output error log file (.ERR)
-g Add source debug information in object
-l Output relocatable list file (.LST)
-c Ignore character case of symbols
-o <file name> Specify output file name
File name: Source file name (.S or .MS)
Pseudo-instructions
#include <file name> Inserts other file in the source file.
#define <define name> [<string>] Defines a character string with a define name.
#defnum <defnum name> <value> Defines a value with a defnum name.
#macro <macro name> [par] [,par] ... Defines a statement string with a macro name.
<statements> (par: Dummy parameters)
#endm
#ifdef
<name> Conditional assembling
<statements 1> <name> defined: <statements 1> is assembled.
[#else <name> undefined: <statements 2> is assembled.
<statements 2>]
#endif
#ifndef <name>
Conditional assembling
<statements 1> <name> undefined: <statements 1> is assembled.
[#else <name> defined: <statements 2> is assembled.
<statements 2>]
#endif
.code
Declares the start of a CODE section.
.data Declares the start of a DATA section.
.bss Declares the start of a BSS section.
.abs Specifies absolute assembling.
.org <address> Specifies an absolute address.
.align <alignment number> Specifies alignment of a section.
.comm <global symbol> <size> Defines a global symbol and secures memory area in a
bss section.
.lcomm <local symbol> <size> Defines a local symbol and secures memory area in a
bss section.
.set <symbol> <address> Defines an absolute address for a symbol.
.global <symbol> Declares the symbol as global.
.codeword <data>[ <data> ... <data>] Defines codes in the CODE section.
.word <data>[ <data> ... <data>] Defines data in the DATA section.
.list Turns output ON(.list)/OFF(.nolist) in the assembly list
.nolist file. (Effective only when the -l option is specified)
.stabs "<file name>", FileName Outputs source information for debugging.
.stabn 0, FileEnd (Effective only when the -g option is specified)
.stabn <line number>, LineInfo