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The Original Code

Consider the following S9 function:

string a = "batata";
int s9() -> 0 {
      a!
}

Postfix Code

The Postfix code for the above function is as follows:

Postfix code
;--- declaring the string literal RODATA ALIGN LABEL _L123 ;; automatic label STR "batata" ;--- declaring the global variable "a" DATA ALIGN LABEL a SADDR _L123 ;; automatic label ;--- this is the main function (note that "s9" translates to RTS's "_main") TEXT ALIGN GLOBL _main, FUNC LABEL _main ENTER 0 ADDR a LDINT EXTRN prints CALL prints TRASH 4 INT 0 STFVAL32 LEAVE RET

Compiling and Running

To test the first example, the S9 compilation process is as follows:

s9 batata.s9
yasm -felf batata.asm
ld -o batata batata.o -lrts

To test the second program directly, pf2asm can be used:

pf2asm batata.pf
yasm -felf batata.asm
ld -o batata batata.o -lrts