diff options
Diffstat (limited to 'arch/arm/crypto/aes-ce-core.S')
| -rw-r--r-- | arch/arm/crypto/aes-ce-core.S | 482 |
1 files changed, 335 insertions, 147 deletions
diff --git a/arch/arm/crypto/aes-ce-core.S b/arch/arm/crypto/aes-ce-core.S index caac519d6249..b978cdf133af 100644 --- a/arch/arm/crypto/aes-ce-core.S +++ b/arch/arm/crypto/aes-ce-core.S @@ -44,63 +44,73 @@ veor q0, q0, \key3 .endm - .macro enc_dround_3x, key1, key2 + .macro enc_dround_4x, key1, key2 enc_round q0, \key1 enc_round q1, \key1 enc_round q2, \key1 + enc_round q3, \key1 enc_round q0, \key2 enc_round q1, \key2 enc_round q2, \key2 + enc_round q3, \key2 .endm - .macro dec_dround_3x, key1, key2 + .macro dec_dround_4x, key1, key2 dec_round q0, \key1 dec_round q1, \key1 dec_round q2, \key1 + dec_round q3, \key1 dec_round q0, \key2 dec_round q1, \key2 dec_round q2, \key2 + dec_round q3, \key2 .endm - .macro enc_fround_3x, key1, key2, key3 + .macro enc_fround_4x, key1, key2, key3 enc_round q0, \key1 enc_round q1, \key1 enc_round q2, \key1 + enc_round q3, \key1 aese.8 q0, \key2 aese.8 q1, \key2 aese.8 q2, \key2 + aese.8 q3, \key2 veor q0, q0, \key3 veor q1, q1, \key3 veor q2, q2, \key3 + veor q3, q3, \key3 .endm - .macro dec_fround_3x, key1, key2, key3 + .macro dec_fround_4x, key1, key2, key3 dec_round q0, \key1 dec_round q1, \key1 dec_round q2, \key1 + dec_round q3, \key1 aesd.8 q0, \key2 aesd.8 q1, \key2 aesd.8 q2, \key2 + aesd.8 q3, \key2 veor q0, q0, \key3 veor q1, q1, \key3 veor q2, q2, \key3 + veor q3, q3, \key3 .endm .macro do_block, dround, fround cmp r3, #12 @ which key size? - vld1.8 {q10-q11}, [ip]! + vld1.32 {q10-q11}, [ip]! \dround q8, q9 - vld1.8 {q12-q13}, [ip]! + vld1.32 {q12-q13}, [ip]! \dround q10, q11 - vld1.8 {q10-q11}, [ip]! + vld1.32 {q10-q11}, [ip]! \dround q12, q13 - vld1.8 {q12-q13}, [ip]! + vld1.32 {q12-q13}, [ip]! \dround q10, q11 blo 0f @ AES-128: 10 rounds - vld1.8 {q10-q11}, [ip]! + vld1.32 {q10-q11}, [ip]! \dround q12, q13 beq 1f @ AES-192: 12 rounds - vld1.8 {q12-q13}, [ip] + vld1.32 {q12-q13}, [ip] \dround q10, q11 0: \fround q12, q13, q14 bx lr @@ -114,8 +124,9 @@ * transforms. These should preserve all registers except q0 - q2 and ip * Arguments: * q0 : first in/output block - * q1 : second in/output block (_3x version only) - * q2 : third in/output block (_3x version only) + * q1 : second in/output block (_4x version only) + * q2 : third in/output block (_4x version only) + * q3 : fourth in/output block (_4x version only) * q8 : first round key * q9 : secound round key * q14 : final round key @@ -136,44 +147,44 @@ aes_decrypt: ENDPROC(aes_decrypt) .align 6 -aes_encrypt_3x: +aes_encrypt_4x: add ip, r2, #32 @ 3rd round key - do_block enc_dround_3x, enc_fround_3x -ENDPROC(aes_encrypt_3x) + do_block enc_dround_4x, enc_fround_4x +ENDPROC(aes_encrypt_4x) .align 6 -aes_decrypt_3x: +aes_decrypt_4x: add ip, r2, #32 @ 3rd round key - do_block dec_dround_3x, dec_fround_3x -ENDPROC(aes_decrypt_3x) + do_block dec_dround_4x, dec_fround_4x +ENDPROC(aes_decrypt_4x) .macro prepare_key, rk, rounds add ip, \rk, \rounds, lsl #4 - vld1.8 {q8-q9}, [\rk] @ load first 2 round keys - vld1.8 {q14}, [ip] @ load last round key + vld1.32 {q8-q9}, [\rk] @ load first 2 round keys + vld1.32 {q14}, [ip] @ load last round key .endm /* - * aes_ecb_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, + * aes_ecb_encrypt(u8 out[], u8 const in[], u32 const rk[], int rounds, * int blocks) - * aes_ecb_decrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, + * aes_ecb_decrypt(u8 out[], u8 const in[], u32 const rk[], int rounds, * int blocks) */ ENTRY(ce_aes_ecb_encrypt) push {r4, lr} ldr r4, [sp, #8] prepare_key r2, r3 -.Lecbencloop3x: - subs r4, r4, #3 +.Lecbencloop4x: + subs r4, r4, #4 bmi .Lecbenc1x vld1.8 {q0-q1}, [r1]! - vld1.8 {q2}, [r1]! - bl aes_encrypt_3x + vld1.8 {q2-q3}, [r1]! + bl aes_encrypt_4x vst1.8 {q0-q1}, [r0]! - vst1.8 {q2}, [r0]! - b .Lecbencloop3x + vst1.8 {q2-q3}, [r0]! + b .Lecbencloop4x .Lecbenc1x: - adds r4, r4, #3 + adds r4, r4, #4 beq .Lecbencout .Lecbencloop: vld1.8 {q0}, [r1]! @@ -189,17 +200,17 @@ ENTRY(ce_aes_ecb_decrypt) push {r4, lr} ldr r4, [sp, #8] prepare_key r2, r3 -.Lecbdecloop3x: - subs r4, r4, #3 +.Lecbdecloop4x: + subs r4, r4, #4 bmi .Lecbdec1x vld1.8 {q0-q1}, [r1]! - vld1.8 {q2}, [r1]! - bl aes_decrypt_3x + vld1.8 {q2-q3}, [r1]! + bl aes_decrypt_4x vst1.8 {q0-q1}, [r0]! - vst1.8 {q2}, [r0]! - b .Lecbdecloop3x + vst1.8 {q2-q3}, [r0]! + b .Lecbdecloop4x .Lecbdec1x: - adds r4, r4, #3 + adds r4, r4, #4 beq .Lecbdecout .Lecbdecloop: vld1.8 {q0}, [r1]! @@ -212,9 +223,9 @@ ENTRY(ce_aes_ecb_decrypt) ENDPROC(ce_aes_ecb_decrypt) /* - * aes_cbc_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, + * aes_cbc_encrypt(u8 out[], u8 const in[], u32 const rk[], int rounds, * int blocks, u8 iv[]) - * aes_cbc_decrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, + * aes_cbc_decrypt(u8 out[], u8 const in[], u32 const rk[], int rounds, * int blocks, u8 iv[]) */ ENTRY(ce_aes_cbc_encrypt) @@ -236,88 +247,181 @@ ENDPROC(ce_aes_cbc_encrypt) ENTRY(ce_aes_cbc_decrypt) push {r4-r6, lr} ldrd r4, r5, [sp, #16] - vld1.8 {q6}, [r5] @ keep iv in q6 + vld1.8 {q15}, [r5] @ keep iv in q15 prepare_key r2, r3 -.Lcbcdecloop3x: - subs r4, r4, #3 +.Lcbcdecloop4x: + subs r4, r4, #4 bmi .Lcbcdec1x vld1.8 {q0-q1}, [r1]! - vld1.8 {q2}, [r1]! - vmov q3, q0 - vmov q4, q1 - vmov q5, q2 - bl aes_decrypt_3x - veor q0, q0, q6 - veor q1, q1, q3 - veor q2, q2, q4 - vmov q6, q5 + vld1.8 {q2-q3}, [r1]! + vmov q4, q0 + vmov q5, q1 + vmov q6, q2 + vmov q7, q3 + bl aes_decrypt_4x + veor q0, q0, q15 + veor q1, q1, q4 + veor q2, q2, q5 + veor q3, q3, q6 + vmov q15, q7 vst1.8 {q0-q1}, [r0]! - vst1.8 {q2}, [r0]! - b .Lcbcdecloop3x + vst1.8 {q2-q3}, [r0]! + b .Lcbcdecloop4x .Lcbcdec1x: - adds r4, r4, #3 + adds r4, r4, #4 beq .Lcbcdecout - vmov q15, q14 @ preserve last round key + vmov q6, q14 @ preserve last round key .Lcbcdecloop: vld1.8 {q0}, [r1]! @ get next ct block veor q14, q15, q6 @ combine prev ct with last key - vmov q6, q0 + vmov q15, q0 bl aes_decrypt vst1.8 {q0}, [r0]! subs r4, r4, #1 bne .Lcbcdecloop .Lcbcdecout: - vst1.8 {q6}, [r5] @ keep iv in q6 + vst1.8 {q15}, [r5] @ keep iv in q15 pop {r4-r6, pc} ENDPROC(ce_aes_cbc_decrypt) + /* - * aes_ctr_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds, + * ce_aes_cbc_cts_encrypt(u8 out[], u8 const in[], u32 const rk[], + * int rounds, int bytes, u8 const iv[]) + * ce_aes_cbc_cts_decrypt(u8 out[], u8 const in[], u32 const rk[], + * int rounds, int bytes, u8 const iv[]) + */ + +ENTRY(ce_aes_cbc_cts_encrypt) + push {r4-r6, lr} + ldrd r4, r5, [sp, #16] + + movw ip, :lower16:.Lcts_permute_table + movt ip, :upper16:.Lcts_permute_table + sub r4, r4, #16 + add lr, ip, #32 + add ip, ip, r4 + sub lr, lr, r4 + vld1.8 {q5}, [ip] + vld1.8 {q6}, [lr] + + add ip, r1, r4 + vld1.8 {q0}, [r1] @ overlapping loads + vld1.8 {q3}, [ip] + + vld1.8 {q1}, [r5] @ get iv + prepare_key r2, r3 + + veor q0, q0, q1 @ xor with iv + bl aes_encrypt + + vtbl.8 d4, {d0-d1}, d10 + vtbl.8 d5, {d0-d1}, d11 + vtbl.8 d2, {d6-d7}, d12 + vtbl.8 d3, {d6-d7}, d13 + + veor q0, q0, q1 + bl aes_encrypt + + add r4, r0, r4 + vst1.8 {q2}, [r4] @ overlapping stores + vst1.8 {q0}, [r0] + + pop {r4-r6, pc} +ENDPROC(ce_aes_cbc_cts_encrypt) + +ENTRY(ce_aes_cbc_cts_decrypt) + push {r4-r6, lr} + ldrd r4, r5, [sp, #16] + + movw ip, :lower16:.Lcts_permute_table + movt ip, :upper16:.Lcts_permute_table + sub r4, r4, #16 + add lr, ip, #32 + add ip, ip, r4 + sub lr, lr, r4 + vld1.8 {q5}, [ip] + vld1.8 {q6}, [lr] + + add ip, r1, r4 + vld1.8 {q0}, [r1] @ overlapping loads + vld1.8 {q1}, [ip] + + vld1.8 {q3}, [r5] @ get iv + prepare_key r2, r3 + + bl aes_decrypt + + vtbl.8 d4, {d0-d1}, d10 + vtbl.8 d5, {d0-d1}, d11 + vtbx.8 d0, {d2-d3}, d12 + vtbx.8 d1, {d2-d3}, d13 + + veor q1, q1, q2 + bl aes_decrypt + veor q0, q0, q3 @ xor with iv + + add r4, r0, r4 + vst1.8 {q1}, [r4] @ overlapping stores + vst1.8 {q0}, [r0] + + pop {r4-r6, pc} +ENDPROC(ce_aes_cbc_cts_decrypt) + + + /* + * aes_ctr_encrypt(u8 out[], u8 const in[], u32 const rk[], int rounds, * int blocks, u8 ctr[]) */ ENTRY(ce_aes_ctr_encrypt) push {r4-r6, lr} ldrd r4, r5, [sp, #16] - vld1.8 {q6}, [r5] @ load ctr + vld1.8 {q7}, [r5] @ load ctr prepare_key r2, r3 - vmov r6, s27 @ keep swabbed ctr in r6 + vmov r6, s31 @ keep swabbed ctr in r6 rev r6, r6 cmn r6, r4 @ 32 bit overflow? bcs .Lctrloop -.Lctrloop3x: - subs r4, r4, #3 +.Lctrloop4x: + subs r4, r4, #4 bmi .Lctr1x add r6, r6, #1 - vmov q0, q6 - vmov q1, q6 + vmov q0, q7 + vmov q1, q7 rev ip, r6 add r6, r6, #1 - vmov q2, q6 + vmov q2, q7 vmov s7, ip rev ip, r6 add r6, r6, #1 + vmov q3, q7 vmov s11, ip - vld1.8 {q3-q4}, [r1]! - vld1.8 {q5}, [r1]! - bl aes_encrypt_3x - veor q0, q0, q3 - veor q1, q1, q4 - veor q2, q2, q5 + rev ip, r6 + add r6, r6, #1 + vmov s15, ip + vld1.8 {q4-q5}, [r1]! + vld1.8 {q6}, [r1]! + vld1.8 {q15}, [r1]! + bl aes_encrypt_4x + veor q0, q0, q4 + veor q1, q1, q5 + veor q2, q2, q6 + veor q3, q3, q15 rev ip, r6 vst1.8 {q0-q1}, [r0]! - vst1.8 {q2}, [r0]! - vmov s27, ip - b .Lctrloop3x + vst1.8 {q2-q3}, [r0]! + vmov s31, ip + b .Lctrloop4x .Lctr1x: - adds r4, r4, #3 + adds r4, r4, #4 beq .Lctrout .Lctrloop: - vmov q0, q6 + vmov q0, q7 bl aes_encrypt adds r6, r6, #1 @ increment BE ctr rev ip, r6 - vmov s27, ip + vmov s31, ip bcs .Lctrcarry .Lctrcarrydone: @@ -329,7 +433,7 @@ ENTRY(ce_aes_ctr_encrypt) bne .Lctrloop .Lctrout: - vst1.8 {q6}, [r5] @ return next CTR value + vst1.8 {q7}, [r5] @ return next CTR value pop {r4-r6, pc} .Lctrtailblock: @@ -337,7 +441,7 @@ ENTRY(ce_aes_ctr_encrypt) b .Lctrout .Lctrcarry: - .irp sreg, s26, s25, s24 + .irp sreg, s30, s29, s28 vmov ip, \sreg @ load next word of ctr rev ip, ip @ ... to handle the carry adds ip, ip, #1 @@ -349,10 +453,10 @@ ENTRY(ce_aes_ctr_encrypt) ENDPROC(ce_aes_ctr_encrypt) /* - * aes_xts_encrypt(u8 out[], u8 const in[], u8 const rk1[], int rounds, - * int blocks, u8 iv[], u8 const rk2[], int first) - * aes_xts_decrypt(u8 out[], u8 const in[], u8 const rk1[], int rounds, - * int blocks, u8 iv[], u8 const rk2[], int first) + * aes_xts_encrypt(u8 out[], u8 const in[], u32 const rk1[], int rounds, + * int bytes, u8 iv[], u32 const rk2[], int first) + * aes_xts_decrypt(u8 out[], u8 const in[], u32 const rk1[], int rounds, + * int bytes, u8 iv[], u32 const rk2[], int first) */ .macro next_tweak, out, in, const, tmp @@ -363,13 +467,10 @@ ENDPROC(ce_aes_ctr_encrypt) veor \out, \out, \tmp .endm - .align 3 -.Lxts_mul_x: - .quad 1, 0x87 - ce_aes_xts_init: - vldr d14, .Lxts_mul_x - vldr d15, .Lxts_mul_x + 8 + vmov.i32 d30, #0x87 @ compose tweak mask vector + vmovl.u32 q15, d30 + vshr.u64 d30, d31, #7 ldrd r4, r5, [sp, #16] @ load args ldr r6, [sp, #28] @@ -390,49 +491,86 @@ ENTRY(ce_aes_xts_encrypt) bl ce_aes_xts_init @ run shared prologue prepare_key r2, r3 - vmov q3, q0 + vmov q4, q0 teq r6, #0 @ start of a block? - bne .Lxtsenc3x + bne .Lxtsenc4x -.Lxtsencloop3x: - next_tweak q3, q3, q7, q6 -.Lxtsenc3x: - subs r4, r4, #3 +.Lxtsencloop4x: + next_tweak q4, q4, q15, q10 +.Lxtsenc4x: + subs r4, r4, #64 bmi .Lxtsenc1x - vld1.8 {q0-q1}, [r1]! @ get 3 pt blocks - vld1.8 {q2}, [r1]! - next_tweak q4, q3, q7, q6 - veor q0, q0, q3 - next_tweak q5, q4, q7, q6 - veor q1, q1, q4 - veor q2, q2, q5 - bl aes_encrypt_3x - veor q0, q0, q3 - veor q1, q1, q4 - veor q2, q2, q5 - vst1.8 {q0-q1}, [r0]! @ write 3 ct blocks - vst1.8 {q2}, [r0]! - vmov q3, q5 + vld1.8 {q0-q1}, [r1]! @ get 4 pt blocks + vld1.8 {q2-q3}, [r1]! + next_tweak q5, q4, q15, q10 + veor q0, q0, q4 + next_tweak q6, q5, q15, q10 + veor q1, q1, q5 + next_tweak q7, q6, q15, q10 + veor q2, q2, q6 + veor q3, q3, q7 + bl aes_encrypt_4x + veor q0, q0, q4 + veor q1, q1, q5 + veor q2, q2, q6 + veor q3, q3, q7 + vst1.8 {q0-q1}, [r0]! @ write 4 ct blocks + vst1.8 {q2-q3}, [r0]! + vmov q4, q7 teq r4, #0 - beq .Lxtsencout - b .Lxtsencloop3x + beq .Lxtsencret + b .Lxtsencloop4x .Lxtsenc1x: - adds r4, r4, #3 + adds r4, r4, #64 beq .Lxtsencout + subs r4, r4, #16 + bmi .LxtsencctsNx .Lxtsencloop: vld1.8 {q0}, [r1]! - veor q0, q0, q3 +.Lxtsencctsout: + veor q0, q0, q4 bl aes_encrypt - veor q0, q0, q3 - vst1.8 {q0}, [r0]! - subs r4, r4, #1 + veor q0, q0, q4 + teq r4, #0 beq .Lxtsencout - next_tweak q3, q3, q7, q6 + subs r4, r4, #16 + next_tweak q4, q4, q15, q6 + bmi .Lxtsenccts + vst1.8 {q0}, [r0]! b .Lxtsencloop .Lxtsencout: - vst1.8 {q3}, [r5] + vst1.8 {q0}, [r0] +.Lxtsencret: + vst1.8 {q4}, [r5] pop {r4-r6, pc} + +.LxtsencctsNx: + vmov q0, q3 + sub r0, r0, #16 +.Lxtsenccts: + movw ip, :lower16:.Lcts_permute_table + movt ip, :upper16:.Lcts_permute_table + + add r1, r1, r4 @ rewind input pointer + add r4, r4, #16 @ # bytes in final block + add lr, ip, #32 + add ip, ip, r4 + sub lr, lr, r4 + add r4, r0, r4 @ output address of final block + + vld1.8 {q1}, [r1] @ load final partial block + vld1.8 {q2}, [ip] + vld1.8 {q3}, [lr] + + vtbl.8 d4, {d0-d1}, d4 + vtbl.8 d5, {d0-d1}, d5 + vtbx.8 d0, {d2-d3}, d6 + vtbx.8 d1, {d2-d3}, d7 + + vst1.8 {q2}, [r4] @ overlapping stores + mov r4, #0 + b .Lxtsencctsout ENDPROC(ce_aes_xts_encrypt) @@ -441,50 +579,90 @@ ENTRY(ce_aes_xts_decrypt) bl ce_aes_xts_init @ run shared prologue prepare_key r2, r3 - vmov q3, q0 + vmov q4, q0 + + /* subtract 16 bytes if we are doing CTS */ + tst r4, #0xf + subne r4, r4, #0x10 teq r6, #0 @ start of a block? - bne .Lxtsdec3x + bne .Lxtsdec4x -.Lxtsdecloop3x: - next_tweak q3, q3, q7, q6 -.Lxtsdec3x: - subs r4, r4, #3 +.Lxtsdecloop4x: + next_tweak q4, q4, q15, q10 +.Lxtsdec4x: + subs r4, r4, #64 bmi .Lxtsdec1x - vld1.8 {q0-q1}, [r1]! @ get 3 ct blocks - vld1.8 {q2}, [r1]! - next_tweak q4, q3, q7, q6 - veor q0, q0, q3 - next_tweak q5, q4, q7, q6 - veor q1, q1, q4 - veor q2, q2, q5 - bl aes_decrypt_3x - veor q0, q0, q3 - veor q1, q1, q4 - veor q2, q2, q5 - vst1.8 {q0-q1}, [r0]! @ write 3 pt blocks - vst1.8 {q2}, [r0]! - vmov q3, q5 + vld1.8 {q0-q1}, [r1]! @ get 4 ct blocks + vld1.8 {q2-q3}, [r1]! + next_tweak q5, q4, q15, q10 + veor q0, q0, q4 + next_tweak q6, q5, q15, q10 + veor q1, q1, q5 + next_tweak q7, q6, q15, q10 + veor q2, q2, q6 + veor q3, q3, q7 + bl aes_decrypt_4x + veor q0, q0, q4 + veor q1, q1, q5 + veor q2, q2, q6 + veor q3, q3, q7 + vst1.8 {q0-q1}, [r0]! @ write 4 pt blocks + vst1.8 {q2-q3}, [r0]! + vmov q4, q7 teq r4, #0 beq .Lxtsdecout - b .Lxtsdecloop3x + b .Lxtsdecloop4x .Lxtsdec1x: - adds r4, r4, #3 + adds r4, r4, #64 beq .Lxtsdecout + subs r4, r4, #16 .Lxtsdecloop: vld1.8 {q0}, [r1]! - veor q0, q0, q3 - add ip, r2, #32 @ 3rd round key + bmi .Lxtsdeccts +.Lxtsdecctsout: + veor q0, q0, q4 bl aes_decrypt - veor q0, q0, q3 + veor q0, q0, q4 vst1.8 {q0}, [r0]! - subs r4, r4, #1 + teq r4, #0 beq .Lxtsdecout - next_tweak q3, q3, q7, q6 + subs r4, r4, #16 + next_tweak q4, q4, q15, q6 b .Lxtsdecloop .Lxtsdecout: - vst1.8 {q3}, [r5] + vst1.8 {q4}, [r5] pop {r4-r6, pc} + +.Lxtsdeccts: + movw ip, :lower16:.Lcts_permute_table + movt ip, :upper16:.Lcts_permute_table + + add r1, r1, r4 @ rewind input pointer + add r4, r4, #16 @ # bytes in final block + add lr, ip, #32 + add ip, ip, r4 + sub lr, lr, r4 + add r4, r0, r4 @ output address of final block + + next_tweak q5, q4, q15, q6 + + vld1.8 {q1}, [r1] @ load final partial block + vld1.8 {q2}, [ip] + vld1.8 {q3}, [lr] + + veor q0, q0, q5 + bl aes_decrypt + veor q0, q0, q5 + + vtbl.8 d4, {d0-d1}, d4 + vtbl.8 d5, {d0-d1}, d5 + vtbx.8 d0, {d2-d3}, d6 + vtbx.8 d1, {d2-d3}, d7 + + vst1.8 {q2}, [r4] @ overlapping stores + mov r4, #0 + b .Lxtsdecctsout ENDPROC(ce_aes_xts_decrypt) /* @@ -505,8 +683,18 @@ ENDPROC(ce_aes_sub) * operation on round key *src */ ENTRY(ce_aes_invert) - vld1.8 {q0}, [r1] + vld1.32 {q0}, [r1] aesimc.8 q0, q0 - vst1.8 {q0}, [r0] + vst1.32 {q0}, [r0] bx lr ENDPROC(ce_aes_invert) + + .section ".rodata", "a" + .align 6 +.Lcts_permute_table: + .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + .byte 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7 + .byte 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf + .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + .byte 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff |