kvisc/ka/crt/fmt/printf.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.

;
; int putc(int ch)
;
putc:
    prn ax0
    xor rax, rax
    ret

;
; int printf(const char *fmt, ...)
;
printf:
    dump 0
    mov ax2, ax0
    mov ax0, putc
    mov ax1, STRLEN_MAX
    lea ax3, b[rsp+8]
    jmp doprnt

;
; int nprintf(const char *fmt, int n, ...)
;
nprintf:
    dump 0
    mov ax2, ax0
    mov ax0, putc
    lea ax3, b[rsp+8]
    jmp doprnt

;
; Print a string
;
print:
    mov rcx, STRLEN_MAX
    b.z b[ax0], 0, .1
    prns.rep.nz ax0
.1:
    ret

;
; Print exactly ax1 characters
;
print_n:
    mov rcx, ax1
    b.z b[ax0], 0, .1
    prns.rep.nz ax0
.1:
    ret