JMPL과 JMP의 차이는 무엇인가요?

BOOTSEG = 0x07C0 # boot 시작번지
COLOR_VIDEO = 0xB800 # 컬러 비디오램 메모리

.code16
.text

.globl _start
_start:

jmpl $BOOTSEG, $start2 # 0x7C0번지로 점프
start2:

movw %cs, %ax
movw %ax, %ds

movw $COLOR_VIDEO, %ax
movw %ax, %es
movw $0, %di

movw msgBack, %ax # '.' <= 주황색 문자
movw 0x7FF, %cx # Counter

# cx 개수 만큼 주황색인 '.' 문자를 화면에 출력한다
paint:
movw %ax, %es:(%di)
addw $2, %di
decw %cx
jnz paint

# ABC123을 출력한다
print:
movw $0, %di
movw $0x0641, %es:(%di) # 'A'
addw $2, %di
movw $0x0642, %es:(%di) # 'B'
addw $2, %di
movw $0x0643, %es:(%di) # 'C'
addw $2, %di
movw $0x0631, %es:(%di) # '1'
addw $2, %di
movw $0x0632, %es:(%di) # '2'
addw $2, %di
movw $0x0633, %es:(%di) # '3'

loop:
jmp loop

msgBack:
.byte '.',0xE7

# MBR Magic code
.org 510
boot_flag:
.word 0xAA55

boot.o: file format elf32-i386

Disassembly of section .text:

00000000 <_start>:
0: 66 ea 08 00 00 00 ljmpw $0x0,$0x8
6: c0 07 8c rolb $0x8c,(%edi)

00000008 <start2>: 8: 8c c8 mov %cs,%eax
a: 8e d8 mov %eax,%ds
c: b8 00 b8 8e c0 mov $0xc08eb800,%eax
11: bf 00 00 a1 56 mov $0x56a10000,%edi
16: 00 8b 0e ff 07 26 add %cl,0x2607ff0e(%ebx)

0000001b <paint>:
1b: 26 89 05 83 c7 02 49 mov %eax,%es:0x4902c783
22: 75 f7 jne 1b <paint>

00000024 <print>:
24: bf 00 00 26 c7 mov $0xc7260000,%edi
29: 05 41 06 83 c7 add $0xc7830641,%eax
2e: 02 26 add (%esi),%ah
30: c7 05 42 06 83 c7 02 movl $0x5c72602,0xc7830642
37: 26 c7 05
3a: 43 inc %ebx
3b: 06 push %es
3c: 83 c7 02 add $0x2,%edi
3f: 26 c7 05 31 06 83 c7 movl $0x5c72602,%es:0xc7830631
46: 02 26 c7 05
4a: 32 06 xor (%esi),%al
4c: 83 c7 02 add $0x2,%edi
4f: 26 c7 05 33 06 eb fe movl $0xe72e,%es:0xfeeb0633
56: 2e e7 00 00

00000054 <loop>:
54: eb fe jmp 54 <loop>

00000056 <msgBack>:
56: 2e cs
57: e7 00 out %eax,$0x0
...

000001fe <boot_flag>:
1fe: 55 push %ebp
1ff: aa stos %al,%es:(%edi)