3

针对德州仪器DM270开发板的bootloader,其实现了内核的下载以及文件系统的下载

  900c9c:	6c5f7364 	ldcvsl	3, cr7, [pc], -#400
  900ca0:	3a747369 	bcc	261da4c <__bss_end+0x1d0a1f0>
  900ca4:	322c3028 	eorcc	r3, r12, #40	; 0x28
  900ca8:	613d2938 	teqvs	sp, r8, lsr r9
  900cac:	2c302872 	ldccs	8, cr2, [r0], -#456
  900cb0:	303b2931 	eorccs	r2, r11, r1, lsr r9
  900cb4:	283b393b 	ldmcsda	r11!, {r0, r1, r3, r4, r5, r8, r11, r12, sp}
  900cb8:	36322c30 	undefined
  900cbc:	5f610029 	swipl	0x00610029
  900cc0:	3a646d63 	bcc	221c254 <__bss_end+0x19089f8>
  900cc4:	322c3028 	eorcc	r3, r12, #40	; 0x28
  900cc8:	63002936 	tstvs	r0, #884736	; 0xd8000
  900ccc:	695f646d 	ldmvsdb	pc, {r0, r2, r3, r5, r6, r10, sp, lr}^
  900cd0:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900cd4:	63002931 	tstvs	r0, #802816	; 0xc4000
  900cd8:	6c5f646d 	ldcvsl	4, cr6, [pc], -#436
  900cdc:	5f656e69 	swipl	0x00656e69
  900ce0:	65646f6d 	strvsb	r6, [r4, -#3949]!
  900ce4:	3028663a 	eorcc	r6, r8, r10, lsr r6
  900ce8:	2939312c 	ldmcsdb	r9!, {r2, r3, r5, r8, r12, sp}
  900cec:	646d6300 	strvsbt	r6, [sp], -#768
  900cf0:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900cf4:	00293732 	eoreq	r3, r9, r2, lsr r7
  900cf8:	61726170 	cmnvs	r2, r0, ror r1
  900cfc:	655f736d 	ldrvsb	r7, [pc, #fffffc93]	; 900997 <btldr_start+0x997>
  900d00:	5f746964 	swipl	0x00746964
  900d04:	756e656d 	strvcb	r6, [lr, -#1389]!
  900d08:	3028663a 	eorcc	r6, r8, r10, lsr r6
  900d0c:	2939312c 	ldmcsdb	r9!, {r2, r3, r5, r8, r12, sp}
  900d10:	706f6300 	rsbvc	r6, pc, r0, lsl #6
  900d14:	6f745f79 	swivs	0x00745f79
  900d18:	616c665f 	cmnvs	r12, pc, asr r6
  900d1c:	6d5f6873 	ldcvsl	8, cr6, [pc, -#460]
  900d20:	3a756e65 	bcc	265c6bc <__bss_end+0x1d48e60>
  900d24:	2c302866 	ldccs	8, cr2, [r0], -#408
  900d28:	00293931 	eoreq	r3, r9, r1, lsr r9
  900d2c:	79706f63 	ldmvcdb	r0!, {r0, r1, r5, r6, r8, r9, r10, r11, sp, lr}^
  900d30:	5f6f745f 	swipl	0x006f745f
  900d34:	41524453 	cmpmi	r2, r3, asr r4
  900d38:	656d5f4d 	strvsb	r5, [sp, -#3917]!
  900d3c:	3a31756e 	bcc	155e2fc <__bss_end+0xc4aaa0>
  900d40:	2c302866 	ldccs	8, cr2, [r0], -#408
  900d44:	00293931 	eoreq	r3, r9, r1, lsr r9
  900d48:	5f637273 	swipl	0x00637273
  900d4c:	74726f70 	ldrvcbt	r6, [r2], -#3952
  900d50:	2c35283a 	ldccs	8, cr2, [r5], -#232
  900d54:	6d002934 	stcvs	9, cr2, [r0, -#208]
  900d58:	5f756e65 	swipl	0x00756e65
  900d5c:	65646f6d 	strvsb	r6, [r4, -#3949]!
  900d60:	3028663a 	eorcc	r6, r8, r10, lsr r6
  900d64:	2939312c 	ldmcsdb	r9!, {r2, r3, r5, r8, r12, sp}
  900d68:	6f727000 	swivs	0x00727000
  900d6c:	73736563 	cmnvc	r3, #415236096	; 0x18c00000
  900d70:	6665645f 	undefined
  900d74:	746c7561 	strvcbt	r7, [r12], -#1377
  900d78:	6f6f625f 	swivs	0x006f625f
  900d7c:	6d635f74 	stcvsl	15, cr5, [r3, -#464]!
  900d80:	28663a64 	stmcsda	r6!, {r2, r5, r6, r9, r11, r12, sp}^
  900d84:	39312c30 	ldmccdb	r1!, {r4, r5, r10, r11, sp}
  900d88:	6f630029 	swivs	0x00630029
  900d8c:	6e616d6d 	cdpvs	13, 6, cr6, cr1, cr13, {3}
  900d90:	28703a64 	ldmcsda	r0!, {r2, r5, r6, r9, r11, r12, sp}^
  900d94:	36322c30 	undefined
  900d98:	68630029 	stmvsda	r3!, {r0, r3, r5}^
  900d9c:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900da0:	00293131 	eoreq	r3, r9, r1, lsr r1
  900da4:	6e69616d 	powvsez	f6, f1, #5.0
  900da8:	3028463a 	eorcc	r4, r8, r10, lsr r6
  900dac:	0029312c 	eoreq	r3, r9, r12, lsr #2
  900db0:	63677261 	cmnvs	r7, #268435462	; 0x10000006
  900db4:	3028703a 	eorcc	r7, r8, r10, lsr r0
  900db8:	0029312c 	eoreq	r3, r9, r12, lsr #2
  900dbc:	76677261 	strvcbt	r7, [r7], -r1, ror #4
  900dc0:	3028703a 	eorcc	r7, r8, r10, lsr r0
  900dc4:	2939322c 	ldmcsdb	r9!, {r2, r3, r5, r9, r12, sp}
  900dc8:	30282a3d 	eorcc	r2, r8, sp, lsr r10
  900dcc:	2931322c 	ldmcsdb	r1!, {r2, r3, r5, r9, r12, sp}
  900dd0:	646d6300 	strvsbt	r6, [sp], -#768
  900dd4:	3028473a 	eorcc	r4, r8, r10, lsr r7
  900dd8:	2930332c 	ldmcsdb	r0!, {r2, r3, r5, r8, r9, r12, sp}
  900ddc:	2872613d 	ldmcsda	r2!, {r0, r2, r3, r4, r5, r8, sp, lr}^
  900de0:	29312c30 	ldmcsdb	r1!, {r4, r5, r10, r11, sp}
  900de4:	393b303b 	ldmccdb	r11!, {r0, r1, r3, r4, r5, r12, sp}
  900de8:	2c30283b 	ldccs	8, cr2, [r0], -#236
  900dec:	00293131 	eoreq	r3, r9, r1, lsr r1
  900df0:	6574656d 	ldrvsb	r6, [r4, -#1389]!
  900df4:	696c5f72 	stmvsdb	r12!, {r1, r4, r5, r6, r8, r9, r10, r11, r12, lr}^
  900df8:	6c5f656e 	ldcvsl	5, cr6, [pc], -#440
  900dfc:	533a6e65 	teqpl	r10, #1616	; 0x650
  900e00:	312c3028 	teqcc	r12, r8, lsr #32
  900e04:	49550029 	ldmmidb	r5, {r0, r3, r5}^
  900e08:	646f6d5f 	strvsbt	r6, [pc], #d5f	; 900e10 <btldr_start+0xe10>
  900e0c:	28533a65 	ldmcsda	r3, {r0, r2, r5, r6, r9, r11, r12, sp}^
  900e10:	31312c30 	teqcc	r1, r0, lsr r12
  900e14:	61700029 	cmnvs	r0, r9, lsr #32
  900e18:	28533a72 	ldmcsda	r3, {r1, r4, r5, r6, r9, r11, r12, sp}^
  900e1c:	31332c30 	teqcc	r3, r0, lsr r12
  900e20:	282a3d29 	stmcsda	r10!, {r0, r3, r5, r8, r10, r11, r12, sp}
  900e24:	29372c35 	ldmcsdb	r7!, {r0, r2, r4, r5, r10, r11, sp}
  900e28:	6c746200 	lfmvs	f6, 2, [r4]
  900e2c:	705f7264 	subvcs	r7, pc, r4, ror #4
  900e30:	00632e69 	rsbeq	r2, r3, r9, ror #28
  900e34:	2e74656e 	cdpcs	5, 7, cr6, cr4, cr14, {3}
  900e38:	74650068 	strvcbt	r0, [r5], -#104
  900e3c:	2e726568 	cdpcs	5, 7, cr6, cr2, cr8, {3}
  900e40:	3a200068 	bcc	1100fe8 <__bss_end+0x7ed78c>
  900e44:	2c372854 	ldccs	8, cr2, [r7], -#336
  900e48:	653d2931 	ldrvs	r2, [sp, -#2353]!
  900e4c:	444e4553 	strmib	r4, [lr], -#1363
  900e50:	444e415f 	strmib	r4, [lr], -#351
  900e54:	5445475f 	strplb	r4, [r5], -#1887
  900e58:	5045525f 	subpl	r5, r5, pc, asr r2
  900e5c:	303a594c 	eorccs	r5, r10, r12, asr #18
  900e60:	4e45532c 	cdpmi	3, 4, cr5, cr5, cr12, {1}
  900e64:	2c313a44 	ldccs	10, cr3, [r1], -#272
  900e68:	56434552 	undefined
  900e6c:	462c323a 	undefined
  900e70:	4853554c 	ldmmida	r3, {r2, r3, r6, r8, r10, r12, lr}^
  900e74:	3b2c333a 	blcc	140db64 <__bss_end+0xafa308>
  900e78:	62757300 	rsbvss	r7, r5, #0	; 0x0
  900e7c:	5f74696d 	swipl	0x0074696d
  900e80:	65646f6d 	strvsb	r6, [r4, -#3949]!
  900e84:	3728743a 	undefined
  900e88:	3d29322c 	sfmcc	f3, 4, [r9, -#176]!
  900e8c:	312c3728 	teqcc	r12, r8, lsr #14
  900e90:	74650029 	strvcbt	r0, [r5], -#41
  900e94:	5f726568 	swipl	0x00726568
  900e98:	5f726468 	swipl	0x00726468
  900e9c:	28743a74 	ldmcsda	r4!, {r2, r4, r5, r6, r9, r11, r12, sp}^
  900ea0:	29312c36 	ldmcsdb	r1!, {r1, r2, r4, r5, r10, r11, sp}
  900ea4:	2c36283d 	ldccs	8, cr2, [r6], -#244
  900ea8:	733d2932 	teqvc	sp, #819200	; 0xc8000
  900eac:	65643431 	strvsb	r3, [r4, -#1073]!
  900eb0:	615f7473 	cmpvs	pc, r3, ror r4
  900eb4:	3a726464 	bcc	259a04c <__bss_end+0x1c867f0>
  900eb8:	332c3628 	teqcc	r12, #41943040	; 0x2800000
  900ebc:	72613d29 	rsbvc	r3, r1, #2624	; 0xa40
  900ec0:	312c3028 	teqcc	r12, r8, lsr #32
  900ec4:	3b303b29 	blcc	150fb70 <__bss_end+0xbfc314>
  900ec8:	30283b35 	eorcc	r3, r8, r5, lsr r11
  900ecc:	2931312c 	ldmcsdb	r1!, {r2, r3, r5, r8, r12, sp}
  900ed0:	342c302c 	strcct	r3, [r12], -#44
  900ed4:	72733b38 	rsbvcs	r3, r3, #57344	; 0xe000
  900ed8:	64615f63 	strvsbt	r5, [r1], -#3939
  900edc:	283a7264 	ldmcsda	r10!, {r2, r5, r6, r9, r12, sp, lr}
  900ee0:	29332c36 	ldmcsdb	r3!, {r1, r2, r4, r5, r10, r11, sp}
  900ee4:	2c38342c 	ldccs	4, cr3, [r8], -#176
  900ee8:	663b3834 	undefined
  900eec:	656d6172 	strvsb	r6, [sp, -#370]!
  900ef0:	7079745f 	rsbvcs	r7, r9, pc, asr r4
  900ef4:	30283a65 	eorcc	r3, r8, r5, ror #20
  900ef8:	2c29392c 	stccs	9, cr3, [r9], -#176
  900efc:	312c3639 	teqcc	r12, r9, lsr r6
  900f00:	003b3b36 	eoreqs	r3, r11, r6, lsr r11
  900f04:	685f7069 	ldmvsda	pc, {r0, r3, r5, r6, r12, sp, lr}^
  900f08:	745f7264 	ldrvcb	r7, [pc], #264	; 900f10 <btldr_start+0xf10>
  900f0c:	3628743a 	undefined
  900f10:	3d29342c 	stccc	4, cr3, [r9, -#176]!
  900f14:	352c3628 	strcc	r3, [r12, -#1576]!
  900f18:	32733d29 	rsbccs	r3, r3, #2624	; 0xa40
  900f1c:	72657630 	rsbvc	r7, r5, #50331648	; 0x3000000
  900f20:	6c685f73 	stcvsl	15, cr5, [r8], -#460
  900f24:	283a6e65 	ldmcsda	r10!, {r0, r2, r5, r6, r9, r10, r11, sp, lr}
  900f28:	31312c30 	teqcc	r1, r0, lsr r12
  900f2c:	2c302c29 	ldccs	12, cr2, [r0], -#164
  900f30:	65733b38 	ldrvsb	r3, [r3, -#2872]!
  900f34:	745f7672 	ldrvcb	r7, [pc], #672	; 900f3c <btldr_start+0xf3c>
  900f38:	3a657079 	bcc	225d124 <__bss_end+0x19498c8>
  900f3c:	312c3028 	teqcc	r12, r8, lsr #32
  900f40:	382c2931 	stmccda	r12!, {r0, r4, r5, r8, r11, sp}
  900f44:	743b382c 	ldrvct	r3, [r11], -#2092
  900f48:	6c5f746f 	ldcvsl	4, cr7, [pc], -#444
  900f4c:	283a6e65 	ldmcsda	r10!, {r0, r2, r5, r6, r9, r10, r11, sp, lr}
  900f50:	29392c30 	ldmcsdb	r9!, {r4, r5, r10, r11, sp}
  900f54:	2c36312c 	ldfcss	f3, [r6], -#176
  900f58:	693b3631 	ldmvsdb	r11!, {r0, r4, r5, r9, r10, r12, sp}
  900f5c:	746e6564 	strvcbt	r6, [lr], -#1380
  900f60:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900f64:	332c2939 	teqcc	r12, #933888	; 0xe4000
  900f68:	36312c32 	undefined
  900f6c:	616c663b 	cmnvs	r12, r11, lsr r6
  900f70:	665f7367 	ldrvsb	r7, [pc], -r7, ror #6
  900f74:	6f676172 	swivs	0x00676172
  900f78:	65736666 	ldrvsb	r6, [r3, -#1638]!
  900f7c:	30283a74 	eorcc	r3, r8, r4, ror r10
  900f80:	2c29392c 	stccs	9, cr3, [r9], -#176
  900f84:	312c3834 	teqcc	r12, r4, lsr r8
  900f88:	69743b36 	ldmvsdb	r4!, {r1, r2, r4, r5, r8, r9, r11, r12, sp}^
  900f8c:	6f74656d 	swivs	0x0074656d
  900f90:	6576696c 	ldrvsb	r6, [r6, -#2412]!
  900f94:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900f98:	2c293131 	stfcss	f3, [r9], -#196
  900f9c:	382c3436 	stmccda	r12!, {r1, r2, r4, r5, r10, r12, sp}
  900fa0:	6f72703b 	swivs	0x0072703b
  900fa4:	6f636f74 	swivs	0x00636f74
  900fa8:	30283a6c 	eorcc	r3, r8, r12, ror #20
  900fac:	2931312c 	ldmcsdb	r1!, {r2, r3, r5, r8, r12, sp}
  900fb0:	2c32372c 	ldccs	7, cr3, [r2], -#176
  900fb4:	64683b38 	strvsbt	r3, [r8], -#2872
  900fb8:	68635f72 	stmvsda	r3!, {r1, r4, r5, r6, r8, r9, r10, r11, r12, lr}^
  900fbc:	6d75736b 	ldcvsl	3, cr7, [r5, -#428]!
  900fc0:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900fc4:	382c2939 	stmccda	r12!, {r0, r3, r4, r5, r8, r11, sp}
  900fc8:	36312c30 	undefined
  900fcc:	6372733b 	cmnvs	r2, #-335544320	; 0xec000000
  900fd0:	5f50495f 	swipl	0x0050495f
  900fd4:	72646461 	rsbvc	r6, r4, #1627389952	; 0x61000000
  900fd8:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900fdc:	392c2935 	stmccdb	r12!, {r0, r2, r4, r5, r8, r11, sp}
  900fe0:	32332c36 	eorccs	r2, r3, #13824	; 0x3600
  900fe4:	7365643b 	cmnvc	r5, #989855744	; 0x3b000000
  900fe8:	50495f74 	subpl	r5, r9, r4, ror pc
  900fec:	6464615f 	strvsbt	r6, [r4], -#351
  900ff0:	30283a72 	eorcc	r3, r8, r2, ror r10
  900ff4:	2c29352c 	stccs	5, cr3, [r9], -#176
  900ff8:	2c383231 	lfmcs	f3, 4, [r8], -#196
  900ffc:	3b3b3233 	blcc	17cd8d0 <__bss_end+0xeba074>
  901000:	70647500 	rsbvc	r7, r4, r0, lsl #10
  901004:	7264685f 	rsbvc	r6, r4, #6225920	; 0x5f0000
  901008:	743a745f 	ldrvct	r7, [r10], -#1119
  90100c:	362c3628 	strcct	r3, [r12], -r8, lsr #12
  901010:	36283d29 	strcct	r3, [r8], -r9, lsr #26
  901014:	3d29372c 	stccc	7, cr3, [r9, -#176]!
  901018:	72733873 	rsbvcs	r3, r3, #7536640	; 0x730000
  90101c:	6f705f63 	swivs	0x00705f63
  901020:	283a7472 	ldmcsda	r10!, {r1, r4, r5, r6, r10, r12, sp, lr}
  901024:	29392c30 	ldmcsdb	r9!, {r4, r5, r10, r11, sp}
  901028:	312c302c 	teqcc	r12, r12, lsr #32
  90102c:	65643b36 	strvsb	r3, [r4, -#2870]!
  901030:	705f7473 	subvcs	r7, pc, r3, ror r4
  901034:	3a74726f 	bcc	261d9f8 <__bss_end+0x1d0a19c>
  901038:	392c3028 	stmccdb	r12!, {r3, r5, r12, sp}
  90103c:	36312c29 	ldrcct	r2, [r1], -r9, lsr #24
  901040:	3b36312c 	blcc	168d4f8 <__bss_end+0xd79c9c>
  901044:	5f746f74 	swipl	0x00746f74
  901048:	3a6e656c 	bcc	249a600 <__bss_end+0x1b86da4>
  90104c:	392c3028 	stmccdb	r12!, {r3, r5, r12, sp}
  901050:	32332c29 	eorccs	r2, r3, #10496	; 0x2900
  901054:	3b36312c 	blcc	168d50c <__bss_end+0xd79cb0>
  901058:	736b6863 	cmnvc	r11, #6488064	; 0x630000
  90105c:	283a6d75 	ldmcsda	r10!, {r0, r2, r4, r5, r6, r8, r10, r11, sp, lr}
  901060:	29392c30 	ldmcsdb	r9!, {r4, r5, r10, r11, sp}
  901064:	2c38342c 	ldccs	4, cr3, [r8], -#176
  901068:	3b3b3631 	blcc	17ce934 <__bss_end+0xebb0d8>
  90106c:	74667400 	strvcbt	r7, [r6], -#1024
  901070:	00682e70 	rsbeq	r2, r8, r0, ror lr
  901074:	63657273 	cmnvs	r5, #805306375	; 0x30000007
  901078:	7200682e 	andvc	r6, r0, #3014656	; 0x2e0000
  90107c:	69627761 	stmvsdb	r2!, {r0, r5, r6, r8, r9, r10, r12, sp, lr}^
  901080:	00682e6e 	rsbeq	r2, r8, lr, ror #28
  901084:	2e64736f 	cdpcs	3, 6, cr7, cr4, cr15, {3}
  901088:	65640068 	strvsb	r0, [r4, -#104]!
  90108c:	706d6f63 	rsbvc	r6, sp, r3, ror #30
  901090:	73736572 	cmnvc	r3, #478150656	; 0x1c800000
  901094:	6300682e 	tstvs	r0, #3014656	; 0x2e0000
  901098:	65686361 	strvsb	r6, [r8, -#865]!
  90109c:	6c00682e 	stcvs	8, cr6, [r0], -#184
  9010a0:	78756e69 	ldmvcda	r5!, {r0, r3, r5, r6, r9, r10, r11, sp, lr}^
  9010a4:	7500682e 	strvc	r6, [r0, -#2094]
  9010a8:	28743a38 	ldmcsda	r4!, {r3, r4, r5, r9, r11, r12, sp}^
  9010ac:	312c3531 	teqcc	r12, r1, lsr r5
  9010b0:	30283d29 	eorcc	r3, r8, r9, lsr #26
  9010b4:	2931312c 	ldmcsdb	r1!, {r2, r3, r5, r8, r12, sp}
  9010b8:	36317500 	ldrcct	r7, [r1], -r0, lsl #10
  9010bc:	3128743a 	teqcc	r8, r10, lsr r4
  9010c0:	29322c35 	ldmcsdb	r2!, {r0, r2, r4, r5, r10, r11, sp}
  9010c4:	2c30283d 	ldccs	8, cr2, [r0], -#244
  9010c8:	75002939 	strvc	r2, [r0, -#2361]
  9010cc:	743a3233 	ldrvct	r3, [r10], -#563
  9010d0:	2c353128 	ldfcss	f3, [r5], -#160
  9010d4:	283d2933 	ldmcsda	sp!, {r0, r1, r4, r5, r8, r11, sp}