Instead of creating a file for your source code, you can use stdin to
pipe output from another program into armasm or
to input source code directly on the command line. This is useful
if you want to test a short piece of code without having to create
a file for it.
To use stdin to pipe output from another
program into armasm, invoke the program and the assembler
using the pipe character (|). Use the minus character (-)
as the source filename to instruct the assembler to take input from stdin.
You must specify the output filename using the -o option.
You can specify the command line options you want to use. For example
to pipe output from fromelf:
fromelf --disassemble input.o | armasm -o output.o -
To use stdin to input source code directly
on the command line:
Invoke the assembler with the command line options you want to use. Use the minus character (
-) as the source filename to instruct the assembler to take input fromstdin. You must specify the output filename using the -o option. For example:armasm --bigend -o output.o -
Enter your input. For example:
AREA ARMex, CODE, READONLY ; Name this block of code ARMex ENTRY ; Mark first instruction to execute start MOV r0, #10 ; Set up parameters MOV r1, #3 ADD r0, r0, r1 ; r0 = r0 + r1 stop MOV r0, #0x18 ; angel_SWIreason_ReportException LDR r1, =0x20026 ; ADP_Stopped_ApplicationExit SVC #0x123456 ; ARM semihosting (formerly SWI) END ; Mark end of fileTerminate your input by entering:
Ctrl-ZthenReturnon Microsoft Windows systemsCtrl-Don Unix-based operating systems.
Note
The source code from stdin is stored in
an internal cache that can hold up to 8 MB. You can increase this
cache size using the --maxcache command line
option.
See also- Tasks
Introducing the ARM Compiler toolchain:
- Reference
Introducing the ARM Compiler toolchain:
Assembler Reference:
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