/*Asm labels can only be defined once
in a task.  <F5> will spawn a new task
each time, so you don't get redefine
error, like when repeatedly #including
it from the cmd line.

These are many useful kernel
routines ::/Kernel/StrA.CC
intended to be called from
asm.  Generally, they preserve
regs.

You can call any routine you
like, C or asm, if you import it.
Be aware that C routines do not
preserve RAX,RBX,RCX,RDX,R8,R9.
When calling from the shell or
from C, preserve all other regs.

*/

asm {
//Opcodes are slightly different to make writing the x86_64 assembler easier.
//See ::/Compiler/OpCodes.DD.

MY_WORLD_MESSAGE:
//Define U8 does not put terminating zeros
//on strings.
                                DU8             "World\n", 0;

//The convention is to put an underscore
//on C callable asm routines.
_HELLO_WORLD::
                                PUSH            RSI                     //See REGG_LOCAL_VARS & REGG_LOCAL_NON_PTR_VARS
                                MOV             RCX, 10
@@05:                   MOV             RAX, RCX
                                CALL            PUT_HEX_U8
                                MOV             RAX, CH_SPACE
                                CALL            PUT_CHARS
                                MOV             RAX, 'Hello '   //Supports multi-byte char consts
                                CALL            PUT_CHARS
//We broke it in two pieces to show different ways.
                                MOV             RSI, MY_WORLD_MESSAGE
                                CALL            PUT_STR
                                LOOP            @@05
                                POP             RSI
                                RET
};

Call(_HELLO_WORLD);