.align 4
.globl store_all_registers
//use t6 to store all
.macro store_all_registers
    sd ra, 0(t6)
    sd sp, 8(t6)
    sd gp, 16(t6)
    sd tp, 24(t6)
    sd t0, 32(t6)
    sd t1, 40(t6)
    sd t2, 48(t6)
    sd s0, 56(t6)
    sd s1, 64(t6)
    sd a0, 72(t6)
    sd a1, 80(t6)
    sd a2, 88(t6)
    sd a3, 96(t6)
    sd a4, 104(t6)
    sd a5, 112(t6)
    sd a6, 120(t6)
    sd a7, 128(t6)
    sd s2, 136(t6)
    sd s3, 144(t6)
    sd s4, 152(t6)
    sd s5, 160(t6)
    sd s6, 168(t6)
    sd s7, 176(t6)
    sd s8, 184(t6)
    sd s9, 192(t6)
    sd s10, 200(t6)
    sd s11, 208(t6)
    sd t3, 216(t6)
    sd t4, 224(t6)
    sd t5, 232(t6)
    sd t6, 240(t6)
    //ld t6, 0
.endm

//use t6 to restore all because it's the last one.
.globl restore_all_registers
.macro restore_all_registers
    ld ra, 0(t6)
    ld sp, 8(t6)
    ld gp, 16(t6)
    ld tp, 24(t6)
    ld t0, 32(t6)
    ld t1, 40(t6)
    ld t2, 48(t6)
    ld s0, 56(t6)
    ld s1, 64(t6)
    ld a0, 72(t6)
    ld a1, 80(t6)
    ld a2, 88(t6)
    ld a3, 96(t6)
    ld a4, 104(t6)
    ld a5, 112(t6)
    ld a6, 120(t6)
    ld a7, 128(t6)
    ld s2, 136(t6)
    ld s3, 144(t6)
    ld s4, 152(t6)
    ld s5, 160(t6)
    ld s6, 168(t6)
    ld s7, 176(t6)
    ld s8, 184(t6)
    ld s9, 192(t6)
    ld s10, 200(t6)
    ld s11, 208(t6)
    ld t3, 216(t6)
    ld t4, 224(t6)
    ld t5, 232(t6)
    ld t6, 240(t6)
.endm