disassemble.s

一个基于MMU的操作系统的实现(代码很少

leds:     file format binary

Disassembly of section .data:

00000000 <.data>:
   0:	e59d0000 	ldr	r0, [sp]
   4:	e28d1004 	add	r1, sp, #4	; 0x4
   8:	eb000038 	bl	0xf0
   c:	eb000000 	bl	0x14
  10:	eafffffe 	b	0x10
  14:	e1a0c00d 	mov	ip, sp
  18:	e92dd800 	stmdb	sp!, {fp, ip, lr, pc}
  1c:	e24cb004 	sub	fp, ip, #4	; 0x4
  20:	e24dd008 	sub	sp, sp, #8	; 0x8
  24:	e50b0010 	str	r0, [fp, #-16]
  28:	e51b3010 	ldr	r3, [fp, #-16]
  2c:	e1a00003 	mov	r0, r3
  30:	ef000000 	swi	0x00000000
  34:	e1a03000 	mov	r3, r0
  38:	e50b3014 	str	r3, [fp, #-20]
  3c:	e51b3014 	ldr	r3, [fp, #-20]
  40:	e1a00003 	mov	r0, r3
  44:	e24bd00c 	sub	sp, fp, #12	; 0xc
  48:	e89da800 	ldmia	sp, {fp, sp, pc}
  4c:	e1a0c00d 	mov	ip, sp
  50:	e92dd800 	stmdb	sp!, {fp, ip, lr, pc}
  54:	e24cb004 	sub	fp, ip, #4	; 0x4
  58:	e24dd008 	sub	sp, sp, #8	; 0x8
  5c:	e50b0010 	str	r0, [fp, #-16]
  60:	e51b3010 	ldr	r3, [fp, #-16]
  64:	e1a00003 	mov	r0, r3
  68:	ef000001 	swi	0x00000001
  6c:	e1a03000 	mov	r3, r0
  70:	e50b3014 	str	r3, [fp, #-20]
  74:	e51b3014 	ldr	r3, [fp, #-20]
  78:	e1a00003 	mov	r0, r3
  7c:	e24bd00c 	sub	sp, fp, #12	; 0xc
  80:	e89da800 	ldmia	sp, {fp, sp, pc}
  84:	e1a0c00d 	mov	ip, sp
  88:	e92dd800 	stmdb	sp!, {fp, ip, lr, pc}
  8c:	e24cb004 	sub	fp, ip, #4	; 0x4
  90:	e24dd008 	sub	sp, sp, #8	; 0x8
  94:	e50b0010 	str	r0, [fp, #-16]
  98:	e51b3010 	ldr	r3, [fp, #-16]
  9c:	e1a00003 	mov	r0, r3
  a0:	ef000002 	swi	0x00000002
  a4:	e1a03000 	mov	r3, r0
  a8:	e50b3014 	str	r3, [fp, #-20]
  ac:	e51b3014 	ldr	r3, [fp, #-20]
  b0:	e1a00003 	mov	r0, r3
  b4:	e24bd00c 	sub	sp, fp, #12	; 0xc
  b8:	e89da800 	ldmia	sp, {fp, sp, pc}
  bc:	e1a0c00d 	mov	ip, sp
  c0:	e92dd800 	stmdb	sp!, {fp, ip, lr, pc}
  c4:	e24cb004 	sub	fp, ip, #4	; 0x4
  c8:	e24dd004 	sub	sp, sp, #4	; 0x4
  cc:	e50b0010 	str	r0, [fp, #-16]
  d0:	e51b3010 	ldr	r3, [fp, #-16]
  d4:	e3530000 	cmp	r3, #0	; 0x0
  d8:	0a000003 	beq	0xec
  dc:	e51b3010 	ldr	r3, [fp, #-16]
  e0:	e2433001 	sub	r3, r3, #1	; 0x1
  e4:	e50b3010 	str	r3, [fp, #-16]
  e8:	eafffff8 	b	0xd0
  ec:	e89da808 	ldmia	sp, {r3, fp, sp, pc}
  f0:	e1a0c00d 	mov	ip, sp
  f4:	e92dd800 	stmdb	sp!, {fp, ip, lr, pc}
  f8:	e24cb004 	sub	fp, ip, #4	; 0x4
  fc:	e24dd00c 	sub	sp, sp, #12	; 0xc
 100:	e50b0010 	str	r0, [fp, #-16]
 104:	e50b1014 	str	r1, [fp, #-20]
 108:	e3a03000 	mov	r3, #0	; 0x0
 10c:	e50b3018 	str	r3, [fp, #-24]
 110:	e3a03456 	mov	r3, #1442840576	; 0x56000000
 114:	e2833010 	add	r3, r3, #16	; 0x10
 118:	e3a02955 	mov	r2, #1392640	; 0x154000
 11c:	e5832000 	str	r2, [r3]
 120:	e3a01456 	mov	r1, #1442840576	; 0x56000000
 124:	e2811014 	add	r1, r1, #20	; 0x14
 128:	e24b0018 	sub	r0, fp, #24	; 0x18
 12c:	e5903000 	ldr	r3, [r0]
 130:	e1a02003 	mov	r2, r3
 134:	e1e02002 	mvn	r2, r2
 138:	e1a02382 	mov	r2, r2, lsl #7
 13c:	e2833001 	add	r3, r3, #1	; 0x1
 140:	e5803000 	str	r3, [r0]
 144:	e5812000 	str	r2, [r1]
 148:	e59f000c 	ldr	r0, [pc, #12]	; 0x15c
 14c:	ebffffcc 	bl	0x84
 150:	e3a00032 	mov	r0, #50	; 0x32
 154:	ebffffbc 	bl	0x4c
 158:	eafffff0 	b	0x120
 15c:	00000160 	andeq	r0, r0, r0, ror #2
 160:	72657375 	rsbvc	r7, r5, #-738197503	; 0xd4000001
 164:	6f727020 	swivs	0x00727020
 168:	6d617267 	sfmvs	f7, 2, [r1, #-412]!
 16c:	64656c20 	strvsbt	r6, [r5], #-3104
 170:	69772073 	ldmvsdb	r7!, {r0, r1, r4, r5, r6, sp}^
 174:	73206c6c 	teqvc	r0, #27648	; 0x6c00
 178:	7065656c 	rsbvc	r6, r5, ip, ror #10
 17c:	352e3020 	strcc	r3, [lr, #-32]!
 180:	000d0a73 	andeq	r0, sp, r3, ror sl