movk.S

/* https://github.com/cirosantilli/arm-assembly-cheat#movk */

#include "common.h"

ENTRY
    movk x0, 0x4444, lsl 0
    movk x0, 0x3333, lsl 16
    movk x0, 0x2222, lsl 32
    movk x0, 0x1111, lsl 48
    ASSERT_EQ(x0, 0x1111222233334444)

    /* https://stackoverflow.com/questions/38570495/aarch64-relocation-prefixes
     * https://sourceware.org/binutils/docs-2.26/as/AArch64_002dRelocations.html
     * TODO understand `movz` vs movk.
     */
    movz x0, #:abs_g2:label     // bits 32-47, overflow check
    movk x0, #:abs_g1_nc:label  // bits 16-31, no overflow check
    movk x0, #:abs_g0_nc:label  // bits  0-15, no overflow check
    ldr x1, =label
label:
    cmp x0, x1
    ASSERT(beq)
EXIT