assert_pubkey_eq_ed25519_sysvar.s

.section .text
.globl assert_pubkey_eq_ed25519_sysvar_asm
.type assert_pubkey_eq_ed25519_sysvar_asm, @function

assert_pubkey_eq_ed25519_sysvar_asm:
    // r1 = pubkey_ptr
    
    // Load and compare first 8 bytes with ED25519_PROGRAM_ID[0]
    ldxdw r3, [r1+0]
    jne r3, 0xbefb937cd6467d03, fail
    
    // Load and compare second 8 bytes with ED25519_PROGRAM_ID[1] 
    ldxdw r3, [r1+8]
    jne r3, 0xff408d838f42f912, fail
    
    // Load and compare third 8 bytes with ED25519_PROGRAM_ID[2]
    ldxdw r3, [r1+16]
    jne r3, 0x648af42749747005, fail
    
    // Load and compare fourth 8 bytes with ED25519_PROGRAM_ID[3]
    ldxdw r3, [r1+24]
    jne r3, 0x000000804470cafc, fail
    
    // All equal - success
    exit
    
fail:
    r0 = 1
    exit

.size assert_pubkey_eq_ed25519_sysvar_asm, .-assert_pubkey_eq_ed25519_sysvar_asm