@ RUN: llvm-mc -triple=armv7-apple-darwin -show-encoding < %s | FileCheck %s .syntax unified .globl _func @ Check that the assembler can handle the documented syntax from the ARM ARM @ for loads and stores. _func: @ CHECK: _func @------------------------------------------------------------------------------ @ LDR (immediate) @------------------------------------------------------------------------------ ldr r5, [r7] ldr r6, [r3, #63] ldr r2, [r4, #4095]! ldr r1, [r2], #30 ldr r3, [r1], #-30 ldr r9, [r2], #-0 @ CHECK: ldr r5, [r7] @ encoding: [0x00,0x50,0x97,0xe5] @ CHECK: ldr r6, [r3, #63] @ encoding: [0x3f,0x60,0x93,0xe5] @ CHECK: ldr r2, [r4, #4095]! @ encoding: [0xff,0x2f,0xb4,0xe5] @ CHECK: ldr r1, [r2], #30 @ encoding: [0x1e,0x10,0x92,0xe4] @ CHECK: ldr r3, [r1], #-30 @ encoding: [0x1e,0x30,0x11,0xe4] @ CHECK: ldr r9, [r2], #-0 @ encoding: [0x00,0x90,0x12,0xe4] @------------------------------------------------------------------------------ @ FIXME: LDR (literal) @------------------------------------------------------------------------------ @ label operands currently assert the show-encoding asm comment helper due @ to the use of non-contiguous bit ranges for fixups in ARM. Once that's @ cleaned up, we can write useful assembly testcases for these sorts of @ instructions. @------------------------------------------------------------------------------ @ LDR (register) @------------------------------------------------------------------------------ ldr r3, [r8, r1] ldr r2, [r5, -r3] ldr r1, [r5, r9]! ldr r6, [r7, -r8]! ldr r1, [r0, r2, lsr #3]! ldr r5, [r9], r2 ldr r4, [r3], -r6 ldr r3, [r8, -r2, lsl #15] ldr r1, [r5], r3, asr #15 @ CHECK: ldr r3, [r8, r1] @ encoding: [0x01,0x30,0x98,0xe7] @ CHECK: ldr r2, [r5, -r3] @ encoding: [0x03,0x20,0x15,0xe7] @ CHECK: ldr r1, [r5, r9]! @ encoding: [0x09,0x10,0xb5,0xe7] @ CHECK: ldr r6, [r7, -r8]! @ encoding: [0x08,0x60,0x37,0xe7] @ CHECK: ldr r1, [r0, r2, lsr #3]! @ encoding: [0xa2,0x11,0xb0,0xe7] @ CHECK: ldr r5, [r9], r2 @ encoding: [0x02,0x50,0x99,0xe6] @ CHECK: ldr r4, [r3], -r6 @ encoding: [0x06,0x40,0x13,0xe6] @ CHECK: ldr r3, [r8, -r2, lsl #15] @ encoding: [0x82,0x37,0x18,0xe7] @ CHECK: ldr r1, [r5], r3, asr #15 @ encoding: [0xc3,0x17,0x95,0xe6] @------------------------------------------------------------------------------ @ LDRB (immediate) @------------------------------------------------------------------------------ ldrb r3, [r8] ldrb r1, [sp, #63] ldrb r9, [r3, #4095]! ldrb r8, [r1], #22 ldrb r2, [r7], #-19 @ CHECK: ldrb r3, [r8] @ encoding: [0x00,0x30,0xd8,0xe5] @ CHECK: ldrb r1, [sp, #63] @ encoding: [0x3f,0x10,0xdd,0xe5] @ CHECK: ldrb r9, [r3, #4095]! @ encoding: [0xff,0x9f,0xf3,0xe5] @ CHECK: ldrb r8, [r1], #22 @ encoding: [0x16,0x80,0xd1,0xe4] @ CHECK: ldrb r2, [r7], #-19 @ encoding: [0x13,0x20,0x57,0xe4] @------------------------------------------------------------------------------ @ LDRB (register) @------------------------------------------------------------------------------ ldrb r9, [r8, r5] ldrb r1, [r5, -r1] ldrb r3, [r5, r2]! ldrb r6, [r9, -r3]! ldrb r2, [r1], r4 ldrb r8, [r4], -r5 ldrb r7, [r12, -r1, lsl #15] ldrb r5, [r2], r9, asr #15 @ CHECK: ldrb r9, [r8, r5] @ encoding: [0x05,0x90,0xd8,0xe7] @ CHECK: ldrb r1, [r5, -r1] @ encoding: [0x01,0x10,0x55,0xe7] @ CHECK: ldrb r3, [r5, r2]! @ encoding: [0x02,0x30,0xf5,0xe7] @ CHECK: ldrb r6, [r9, -r3]! @ encoding: [0x03,0x60,0x79,0xe7] @ CHECK: ldrb r2, [r1], r4 @ encoding: [0x04,0x20,0xd1,0xe6] @ CHECK: ldrb r8, [r4], -r5 @ encoding: [0x05,0x80,0x54,0xe6] @ CHECK: ldrb r7, [r12, -r1, lsl #15] @ encoding: [0x81,0x77,0x5c,0xe7] @ CHECK: ldrb r5, [r2], r9, asr #15 @ encoding: [0xc9,0x57,0xd2,0xe6] @------------------------------------------------------------------------------ @ LDRBT @------------------------------------------------------------------------------ @ FIXME: Optional offset operand. ldrbt r3, [r1], #4 ldrbt r2, [r8], #-8 ldrbt r8, [r7], r6 ldrbt r1, [r2], -r6, lsl #12 @ CHECK: ldrbt r3, [r1], #4 @ encoding: [0x04,0x30,0xf1,0xe4] @ CHECK: ldrbt r2, [r8], #-8 @ encoding: [0x08,0x20,0x78,0xe4] @ CHECK: ldrbt r8, [r7], r6 @ encoding: [0x06,0x80,0xf7,0xe6] @ CHECK: ldrbt r1, [r2], -r6, lsl #12 @ encoding: [0x06,0x16,0x72,0xe6] @------------------------------------------------------------------------------ @ LDRD (immediate) @------------------------------------------------------------------------------ ldrd r2, r3, [r5] ldrd r6, r7, [r2, #15] ldrd r0, r1, [r9, #32]! ldrd r6, r7, [r1], #8 ldrd r0, r1, [r8], #0 ldrd r0, r1, [r8], #+0 ldrd r0, r1, [r8], #-0 @ CHECK: ldrd r2, r3, [r5] @ encoding: [0xd0,0x20,0xc5,0xe1] @ CHECK: ldrd r6, r7, [r2, #15] @ encoding: [0xdf,0x60,0xc2,0xe1] @ CHECK: ldrd r0, r1, [r9, #32]! @ encoding: [0xd0,0x02,0xe9,0xe1] @ CHECK: ldrd r6, r7, [r1], #8 @ encoding: [0xd8,0x60,0xc1,0xe0] @ CHECK: ldrd r0, r1, [r8], #0 @ encoding: [0xd0,0x00,0xc8,0xe0] @ CHECK: ldrd r0, r1, [r8], #0 @ encoding: [0xd0,0x00,0xc8,0xe0] @ CHECK: ldrd r0, r1, [r8], #-0 @ encoding: [0xd0,0x00,0x48,0xe0] @------------------------------------------------------------------------------ @ LDRD (label) @------------------------------------------------------------------------------ ldrd r2, r3, Lbaz Lbaz: .quad 0 @ CHECK: ldrd r2, r3, Lbaz @ encoding: [0xd0'A',0x20'A',0x4f'A',0xe1'A'] @------------------------------------------------------------------------------ @ LDRD (register) @------------------------------------------------------------------------------ ldrd r4, r5, [r1, r3] ldrd r4, r5, [r7, r2]! ldrd r0, r1, [r8], r12 ldrd r0, r1, [r8], -r12 @ CHECK: ldrd r4, r5, [r1, r3] @ encoding: [0xd3,0x40,0x81,0xe1] @ CHECK: ldrd r4, r5, [r7, r2]! @ encoding: [0xd2,0x40,0xa7,0xe1] @ CHECK: ldrd r0, r1, [r8], r12 @ encoding: [0xdc,0x00,0x88,0xe0] @ CHECK: ldrd r0, r1, [r8], -r12 @ encoding: [0xdc,0x00,0x08,0xe0] @------------------------------------------------------------------------------ @ LDRH (immediate) @------------------------------------------------------------------------------ ldrh r3, [r4] ldrh r2, [r7, #4] ldrh r1, [r8, #64]! ldrh r12, [sp], #4 @ CHECK: ldrh r3, [r4] @ encoding: [0xb0,0x30,0xd4,0xe1] @ CHECK: ldrh r2, [r7, #4] @ encoding: [0xb4,0x20,0xd7,0xe1] @ CHECK: ldrh r1, [r8, #64]! @ encoding: [0xb0,0x14,0xf8,0xe1] @ CHECK: ldrh r12, [sp], #4 @ encoding: [0xb4,0xc0,0xdd,0xe0] @------------------------------------------------------------------------------ @ FIXME: LDRH (label) @------------------------------------------------------------------------------ @------------------------------------------------------------------------------ @ LDRH (register) @------------------------------------------------------------------------------ ldrh r6, [r5, r4] ldrh r3, [r8, r11]! ldrh r1, [r2, -r1]! ldrh r9, [r7], r2 ldrh r4, [r3], -r2 @ CHECK: ldrh r6, [r5, r4] @ encoding: [0xb4,0x60,0x95,0xe1] @ CHECK: ldrh r3, [r8, r11]! @ encoding: [0xbb,0x30,0xb8,0xe1] @ CHECK: ldrh r1, [r2, -r1]! @ encoding: [0xb1,0x10,0x32,0xe1] @ CHECK: ldrh r9, [r7], r2 @ encoding: [0xb2,0x90,0x97,0xe0] @ CHECK: ldrh r4, [r3], -r2 @ encoding: [0xb2,0x40,0x13,0xe0] @------------------------------------------------------------------------------ @ LDRHT @------------------------------------------------------------------------------ ldrht r9, [r7], #128 ldrht r4, [r3], #-75 ldrht r9, [r7], r2 ldrht r4, [r3], -r2 @ CHECK: ldrht r9, [r7], #128 @ encoding: [0xb0,0x98,0xf7,0xe0] @ CHECK: ldrht r4, [r3], #-75 @ encoding: [0xbb,0x44,0x73,0xe0] @ CHECK: ldrht r9, [r7], r2 @ encoding: [0xb2,0x90,0xb7,0xe0] @ CHECK: ldrht r4, [r3], -r2 @ encoding: [0xb2,0x40,0x33,0xe0] @------------------------------------------------------------------------------ @ LDRSB (immediate) @------------------------------------------------------------------------------ ldrsb r3, [r4] ldrsb r2, [r7, #17] ldrsb r1, [r8, #255]! ldrsb r12, [sp], #9 @ CHECK: ldrsb r3, [r4] @ encoding: [0xd0,0x30,0xd4,0xe1] @ CHECK: ldrsb r2, [r7, #17] @ encoding: [0xd1,0x21,0xd7,0xe1] @ CHECK: ldrsb r1, [r8, #255]! @ encoding: [0xdf,0x1f,0xf8,0xe1] @ CHECK: ldrsb r12, [sp], #9 @ encoding: [0xd9,0xc0,0xdd,0xe0] @------------------------------------------------------------------------------ @ FIXME: LDRSB (label) @------------------------------------------------------------------------------ @------------------------------------------------------------------------------ @ LDRSB (register) @------------------------------------------------------------------------------ ldrsb r6, [r5, r4] ldrsb r3, [r8, r11]! ldrsb r1, [r2, -r1]! ldrsb r9, [r7], r2 ldrsb r4, [r3], -r2 @ CHECK: ldrsb r6, [r5, r4] @ encoding: [0xd4,0x60,0x95,0xe1] @ CHECK: ldrsb r3, [r8, r11]! @ encoding: [0xdb,0x30,0xb8,0xe1] @ CHECK: ldrsb r1, [r2, -r1]! @ encoding: [0xd1,0x10,0x32,0xe1] @ CHECK: ldrsb r9, [r7], r2 @ encoding: [0xd2,0x90,0x97,0xe0] @ CHECK: ldrsb r4, [r3], -r2 @ encoding: [0xd2,0x40,0x13,0xe0] @------------------------------------------------------------------------------ @ LDRSBT @------------------------------------------------------------------------------ ldrsbt r5, [r6], #1 ldrsbt r3, [r8], #-12 ldrsbt r8, [r9], r5 ldrsbt r2, [r1], -r4 @ CHECK: ldrsbt r5, [r6], #1 @ encoding: [0xd1,0x50,0xf6,0xe0] @ CHECK: ldrsbt r3, [r8], #-12 @ encoding: [0xdc,0x30,0x78,0xe0] @ CHECK: ldrsbt r8, [r9], r5 @ encoding: [0xd5,0x80,0xb9,0xe0] @ CHECK: ldrsbt r2, [r1], -r4 @ encoding: [0xd4,0x20,0x31,0xe0] @------------------------------------------------------------------------------ @ LDRSH (immediate) @------------------------------------------------------------------------------ ldrsh r5, [r9] ldrsh r4, [r5, #7] ldrsh r3, [r6, #55]! ldrsh r2, [r7], #-9 @ CHECK: ldrsh r5, [r9] @ encoding: [0xf0,0x50,0xd9,0xe1] @ CHECK: ldrsh r4, [r5, #7] @ encoding: [0xf7,0x40,0xd5,0xe1] @ CHECK: ldrsh r3, [r6, #55]! @ encoding: [0xf7,0x33,0xf6,0xe1] @ CHECK: ldrsh r2, [r7], #-9 @ encoding: [0xf9,0x20,0x57,0xe0] @------------------------------------------------------------------------------ @ FIXME: LDRSH (label) @------------------------------------------------------------------------------ @------------------------------------------------------------------------------ @ LDRSH (register) @------------------------------------------------------------------------------ ldrsh r3, [r1, r5] ldrsh r4, [r6, r1]! ldrsh r5, [r3, -r6]! ldrsh r6, [r9], r8 ldrsh r7, [r8], -r3 @ CHECK: ldrsh r3, [r1, r5] @ encoding: [0xf5,0x30,0x91,0xe1] @ CHECK: ldrsh r4, [r6, r1]! @ encoding: [0xf1,0x40,0xb6,0xe1] @ CHECK: ldrsh r5, [r3, -r6]! @ encoding: [0xf6,0x50,0x33,0xe1] @ CHECK: ldrsh r6, [r9], r8 @ encoding: [0xf8,0x60,0x99,0xe0] @ CHECK: ldrsh r7, [r8], -r3 @ encoding: [0xf3,0x70,0x18,0xe0] @------------------------------------------------------------------------------ @ LDRSHT @------------------------------------------------------------------------------ ldrsht r5, [r6], #1 ldrsht r3, [r8], #-12 ldrsht r8, [r9], r5 ldrsht r2, [r1], -r4 @ CHECK: ldrsht r5, [r6], #1 @ encoding: [0xf1,0x50,0xf6,0xe0] @ CHECK: ldrsht r3, [r8], #-12 @ encoding: [0xfc,0x30,0x78,0xe0] @ CHECK: ldrsht r8, [r9], r5 @ encoding: [0xf5,0x80,0xb9,0xe0] @ CHECK: ldrsht r2, [r1], -r4 @ encoding: [0xf4,0x20,0x31,0xe0] @------------------------------------------------------------------------------ @ STR (immediate) @------------------------------------------------------------------------------ str r8, [r12] str r7, [r1, #12] str r3, [r5, #40]! str r9, [sp], #4095 str r1, [r7], #-128 str r1, [r0], #-0 @ CHECK: str r8, [r12] @ encoding: [0x00,0x80,0x8c,0xe5] @ CHECK: str r7, [r1, #12] @ encoding: [0x0c,0x70,0x81,0xe5] @ CHECK: str r3, [r5, #40]! @ encoding: [0x28,0x30,0xa5,0xe5] @ CHECK: str r9, [sp], #4095 @ encoding: [0xff,0x9f,0x8d,0xe4] @ CHECK: str r1, [r7], #-128 @ encoding: [0x80,0x10,0x07,0xe4] @ CHECK: str r1, [r0], #-0 @ encoding: [0x00,0x10,0x00,0xe4] @------------------------------------------------------------------------------ @ FIXME: STR (literal) @------------------------------------------------------------------------------ @------------------------------------------------------------------------------ @ STR (register) @------------------------------------------------------------------------------ str r9, [r6, r3] str r8, [r0, -r2] str r7, [r1, r6]! str r6, [sp, -r1]! str r5, [r3], r9 str r4, [r2], -r5 str r3, [r4, -r2, lsl #2] str r2, [r7], r3, asr #24 @ CHECK: str r9, [r6, r3] @ encoding: [0x03,0x90,0x86,0xe7] @ CHECK: str r8, [r0, -r2] @ encoding: [0x02,0x80,0x00,0xe7] @ CHECK: str r7, [r1, r6]! @ encoding: [0x06,0x70,0xa1,0xe7] @ CHECK: str r6, [sp, -r1]! @ encoding: [0x01,0x60,0x2d,0xe7] @ CHECK: str r5, [r3], r9 @ encoding: [0x09,0x50,0x83,0xe6] @ CHECK: str r4, [r2], -r5 @ encoding: [0x05,0x40,0x02,0xe6] @ CHECK: str r3, [r4, -r2, lsl #2] @ encoding: [0x02,0x31,0x04,0xe7] @ CHECK: str r2, [r7], r3, asr #24 @ encoding: [0x43,0x2c,0x87,0xe6] @------------------------------------------------------------------------------ @ STRB (immediate) @------------------------------------------------------------------------------ strb r9, [r2] strb r7, [r1, #3] strb r6, [r4, #405]! strb r5, [r7], #72 strb r1, [sp], #-1 @ CHECK: strb r9, [r2] @ encoding: [0x00,0x90,0xc2,0xe5] @ CHECK: strb r7, [r1, #3] @ encoding: [0x03,0x70,0xc1,0xe5] @ CHECK: strb r6, [r4, #405]! @ encoding: [0x95,0x61,0xe4,0xe5] @ CHECK: strb r5, [r7], #72 @ encoding: [0x48,0x50,0xc7,0xe4] @ CHECK: strb r1, [sp], #-1 @ encoding: [0x01,0x10,0x4d,0xe4] @------------------------------------------------------------------------------ @ FIXME: STRB (literal) @------------------------------------------------------------------------------ @------------------------------------------------------------------------------ @ STRB (register) @------------------------------------------------------------------------------ strb r1, [r2, r9] strb r2, [r3, -r8] strb r3, [r4, r7]! strb r4, [r5, -r6]! strb r5, [r6], r5 strb r6, [r2], -r4 strb r7, [r12, -r3, lsl #5] strb sp, [r7], r2, asr #12 @ CHECK: strb r1, [r2, r9] @ encoding: [0x09,0x10,0xc2,0xe7] @ CHECK: strb r2, [r3, -r8] @ encoding: [0x08,0x20,0x43,0xe7] @ CHECK: strb r3, [r4, r7]! @ encoding: [0x07,0x30,0xe4,0xe7] @ CHECK: strb r4, [r5, -r6]! @ encoding: [0x06,0x40,0x65,0xe7] @ CHECK: strb r5, [r6], r5 @ encoding: [0x05,0x50,0xc6,0xe6] @ CHECK: strb r6, [r2], -r4 @ encoding: [0x04,0x60,0x42,0xe6] @ CHECK: strb r7, [r12, -r3, lsl #5] @ encoding: [0x83,0x72,0x4c,0xe7] @ CHECK: strb sp, [r7], r2, asr #12 @ encoding: [0x42,0xd6,0xc7,0xe6] @------------------------------------------------------------------------------ @ STRBT @------------------------------------------------------------------------------ @ FIXME: Optional offset operand. strbt r6, [r2], #12 strbt r5, [r6], #-13 strbt r4, [r9], r5 strbt r3, [r8], -r2, lsl #3 @ CHECK: strbt r6, [r2], #12 @ encoding: [0x0c,0x60,0xe2,0xe4] @ CHECK: strbt r5, [r6], #-13 @ encoding: [0x0d,0x50,0x66,0xe4] @ CHECK: strbt r4, [r9], r5 @ encoding: [0x05,0x40,0xe9,0xe6] @ CHECK: strbt r3, [r8], -r2, lsl #3 @ encoding: [0x82,0x31,0x68,0xe6] @------------------------------------------------------------------------------ @ STRD (immediate) @------------------------------------------------------------------------------ strd r1, r2, [r4] strd r2, r3, [r6, #1] strd r3, r4, [r7, #22]! strd r4, r5, [r8], #7 strd r5, r6, [sp], #0 strd r6, r7, [lr], #+0 strd r7, r8, [r9], #-0 @ CHECK: strd r1, r2, [r4] @ encoding: [0xf0,0x10,0xc4,0xe1] @ CHECK: strd r2, r3, [r6, #1] @ encoding: [0xf1,0x20,0xc6,0xe1] @ CHECK: strd r3, r4, [r7, #22]! @ encoding: [0xf6,0x31,0xe7,0xe1] @ CHECK: strd r4, r5, [r8], #7 @ encoding: [0xf7,0x40,0xc8,0xe0] @ CHECK: strd r5, r6, [sp], #0 @ encoding: [0xf0,0x50,0xcd,0xe0] @ CHECK: strd r6, r7, [lr], #0 @ encoding: [0xf0,0x60,0xce,0xe0] @ CHECK: strd r7, r8, [r9], #-0 @ encoding: [0xf0,0x70,0x49,0xe0] @------------------------------------------------------------------------------ @ FIXME: STRD (label) @------------------------------------------------------------------------------ @------------------------------------------------------------------------------ @ STRD (register) @------------------------------------------------------------------------------ strd r8, r9, [r4, r1] strd r7, r8, [r3, r9]! strd r6, r7, [r5], r8 strd r5, r6, [r12], -r10 @ CHECK: strd r8, r9, [r4, r1] @ encoding: [0xf1,0x80,0x84,0xe1] @ CHECK: strd r7, r8, [r3, r9]! @ encoding: [0xf9,0x70,0xa3,0xe1] @ CHECK: strd r6, r7, [r5], r8 @ encoding: [0xf8,0x60,0x85,0xe0] @ CHECK: strd r5, r6, [r12], -r10 @ encoding: [0xfa,0x50,0x0c,0xe0] @------------------------------------------------------------------------------ @ STRH (immediate) @------------------------------------------------------------------------------ strh r3, [r4] strh r2, [r7, #4] strh r1, [r8, #64]! strh r12, [sp], #4 @ CHECK: strh r3, [r4] @ encoding: [0xb0,0x30,0xc4,0xe1] @ CHECK: strh r2, [r7, #4] @ encoding: [0xb4,0x20,0xc7,0xe1] @ CHECK: strh r1, [r8, #64]! @ encoding: [0xb0,0x14,0xe8,0xe1] @ CHECK: strh r12, [sp], #4 @ encoding: [0xb4,0xc0,0xcd,0xe0] @------------------------------------------------------------------------------ @ FIXME: STRH (label) @------------------------------------------------------------------------------ @------------------------------------------------------------------------------ @ STRH (register) @------------------------------------------------------------------------------ strh r6, [r5, r4] strh r3, [r8, r11]! strh r1, [r2, -r1]! strh r9, [r7], r2 strh r4, [r3], -r2 @ CHECK: strh r6, [r5, r4] @ encoding: [0xb4,0x60,0x85,0xe1] @ CHECK: strh r3, [r8, r11]! @ encoding: [0xbb,0x30,0xa8,0xe1] @ CHECK: strh r1, [r2, -r1]! @ encoding: [0xb1,0x10,0x22,0xe1] @ CHECK: strh r9, [r7], r2 @ encoding: [0xb2,0x90,0x87,0xe0] @ CHECK: strh r4, [r3], -r2 @ encoding: [0xb2,0x40,0x03,0xe0] @------------------------------------------------------------------------------ @ STRHT @------------------------------------------------------------------------------ strht r2, [r5], #76 strht r8, [r1], #-25 strht r5, [r3], r4 strht r6, [r8], -r0 @ CHECK: strht r2, [r5], #76 @ encoding: [0xbc,0x24,0xe5,0xe0] @ CHECK: strht r8, [r1], #-25 @ encoding: [0xb9,0x81,0x61,0xe0] @ CHECK: strht r5, [r3], r4 @ encoding: [0xb4,0x50,0xa3,0xe0] @ CHECK: strht r6, [r8], -r0 @ encoding: [0xb0,0x60,0x28,0xe0] @------------------------------------------------------------------------------ @ GNU Assembler Compatibility @------------------------------------------------------------------------------ ldrd r0, [sp] strd r0, [sp] @ CHECK: ldrd r0, r1, [sp] @ encoding: [0xd0,0x00,0xcd,0xe1] @ CHECK: strd r0, r1, [sp] @ encoding: [0xf0,0x00,0xcd,0xe1]