kvisc/ka/main.k

; The OS/K Team licenses this file to you under the MIT license.
; See the LICENSE file in the project root for more information.

;
; Main function
;
main:
    call bswap_test
    call itoa_test
    call movzx_test
    call str_test

bswap_test:
    mov rdx, 0x1122334455667788
    bswap rax, rdx
    
    mov rdi, 0x1111222233334444
    wswap rsx, rdi

    mov ax3, 0x1111111122222222
    dswap ax0, ax3
    
    ret

ramdev_test:
    call MEM.GetMemOff
    mov rdx, rax

    call MEM.GetMemSize
    ret

stosb_test:
    cld
    mov rcx, 11
    mov rax, 33
    mov rdi, .buf
    mov rsi, .buf
    rep stosb

    mov rbx, rdi
    sub rbx, rsi

    mov ax0, .buf
    mov ax1, 12
    call print_n

    ret

.str1 = "Hello World!\n"
.buf = [32]

movzx_test:
    enter 1

    mov q[rsp], 0xFABC1234CCCCDDDD

    mov rax, b[rsp]
    mov rbx, w[rsp]
    mov rcx, l[rsp]
    mov rdx, q[rsp]

    movzx rsx, b[rsp]
    movzx rbi, w[rsp]
    movzx rdi, l[rsp]
    movzx rsi, q[rsp]

    leave
    ret

itoa_test:
    mov ax0, .buf
    mov ax1, LONG_MIN
    mov ax2, 10
    call itoa

    mov ax0, rax
    call print

    prn 10
    mov ax0, .buf
    mov ax1, 0xfff85ffffffffff4
    mov ax2, 16
    call itoa

    mov ax0, rax
    call print

    ret

.buf = [32]

devtest:
    mov ax0, .buf
    devctl 0, 1

    mov ax0, .buf
    call print

    iocall 0, 0

    ret

.buf = [32]

str_test:
    mov ax0, .msg
    call print

    mov ax0, .buf1
    mov ax1, .msg
    call strcpy
    
    prn 10
    mov ax0, .buf1
    call print

    mov ax0, .buf2
    mov ax1, .msg
    mov ax2, 8
    call strnzcpy

    prn 10
    mov ax0, .buf2
    mov ax1, 12
    call print_n

    mov ax0, .msg
    mov ax1, .buf1
    call strcmp
    mov rbx, rax
    
    mov ax0, .buf2
    mov ax1, .msg
    call strcmp
    mov rsx, rax

    mov ax0, .msg
    call strlen

    ret

.msg = "Hello World :)"

.buf1 = [32]
.buf2 = "!!!!!!!!!!!!!"