hello2.s

网上一个朋对UCGUI整作的一个简单分析, 大家看看,虽然不是很详细, 但比较有整体性.

@ Generated by gcc 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(-msep-data patches) for ARM/elf
	.file	"hello2.c"
.gcc2_compiled.:
	.global	thearray1
.data
	.align	2
	.type	 thearray1,object
	.size	 thearray1,16384
thearray1:
	.word	0
	.space	16380
	.global	thearray2
	.align	2
	.type	 thearray2,object
	.size	 thearray2,16384
thearray2:
	.word	0
	.space	16380
.text
	.align	2
	.global	start_kernel
	.type	 start_kernel,function
start_kernel:
	@ args = 0, pretend = 0, frame = 4
	@ frame_needed = 1, current_function_anonymous_args = 0
	mov	ip, sp
	stmfd	sp!, {fp, ip, lr, pc}
	sub	fp, ip, #4
	sub	sp, sp, #4
	bl	ARMEnableInt
.L3:
	mov	r3, #0
	str	r3, [fp, #-16]
.L6:
	ldr	r3, [fp, #-16]
	mov	r2, #4080
	add	r2, r2, #15
	cmp	r3, r2
	ble	.L9
	b	.L5
.L9:
	ldr	r3, .L11
	ldr	r2, [fp, #-16]
	mov	r1, r2
	mov	r2, r1, asl #2
	ldr	r1, [fp, #-16]
	str	r1, [r3, r2]
	ldr	r3, .L11+4
	ldr	r2, [fp, #-16]
	mov	r1, r2
	mov	r2, r1, asl #2
	ldr	r1, [fp, #-16]
	str	r1, [r3, r2]
	ldr	r2, .L11+8
	ldr	r3, .L11+8
	ldr	r2, .L11+8
	ldr	r1, [r2, #0]
	add	r2, r1, #1
	str	r2, [r3, #0]
.L8:
	ldr	r3, [fp, #-16]
	add	r2, r3, #1
	str	r2, [fp, #-16]
	b	.L6
.L7:
.L5:
	b	.L10
	b	.L4
.L10:
	b	.L3
.L12:
	.align	2
.L11:
	.word	thearray1
	.word	thearray2
	.word	syscount
.L4:
.L2:
	ldmea	fp, {fp, sp, pc}
.Lfe1:
	.size	 start_kernel,.Lfe1-start_kernel