Code Generation/Exercise 8

The Original Code

Consider the following C function:

<c> extern int printf(const char *format, ...); int printlist(int lo, int hi) {

 int ix = lo;
 while (ix < hi) {
   printf("%d\n", ix);
   ix++;
 }
 return ix;

} </c>

directivas: text data rodata bss align label extrn globl const str char id byte double

acesso: addr addra addrv local loca locv load dload ldchr store dstore stchr alloc dup swap push pop int sp aritmética/lógica: add dadd sub dsub mul dmul div ddiv mod neg gt ge lt le eq ne cmp

bit a bit: rotl rotr shtl shtru shtrs and or not xor

funções/saltos: call ret start enter leave trash jmp jz jnz branch leap

Postfix Code

The Postfix code for the above function is as follows:

<asm>

</asm>

Compiling and Running

To compile the Postfix code directly, pf2asm can be used:

• pf2asm printlist.pf
• yasm -felf printlist.asm