I was trying to write a nested loop and print a 10x10 grid of dots. And the assembler throws error when I am trying to use PUSH and POP commands in _print subroutine. Is this the right way to do it or am I doing something wrong. Please Help
.equ WIDTH, 10.equ HEIGHT, 10.dataDOT: .ascii "."BLOCK: .ascii "$"NEW_LINE: .ascii "\n".text.global _start_start:_renderFrame: mov x0, HEIGHT mov x1, WIDTH bl _height_height: cmp x0, 0 beq _exit sub x0, x0, 1 bl _width ldr x3, =NEW_LINE bl _print bl _height_width: cmp x1, 0 beq _height sub x1, x1, 1 ldr x3, =DOT bl _print bl _width_print: push {x0, x1, x2} mov x8, 0x40 mov x0, 1 mov x1, x3 mov x2, 1 svc 0 pop {x0, x1, x2} ret_exit: mov x8, 0x5d mov x0, 0 svc 0The error is as below
main.asm: Assembler messages:main.asm:35: Error: unknown mnemonic `push' -- `push {x0,x1,x2}'main.asm:41: Error: unknown mnemonic `pop' -- `pop {x0,x1,x2}'Note: Before I tried to run assembly in macOS but it seems there is not much support articles online regarding macOS. So I am running this code in a Ubuntu Docker container with inbuilt assembler and linker. And the print and exit system calls are working fine.
