[U-Boot] Hanging in kmalloc of nand_scan_tail() function
terry
gliumailenator at gmail.com
Sat Nov 13 04:43:23 CET 2010
在 2010-11-12五的 11:19 -0600，Scott Wood写道：
> On Fri, 12 Nov 2010 20:45:18 +0800
> terry <gliumailenator at gmail.com> wrote:
>
> > Dear Scott,
> > I have disassemble the nand_base.o file,because i know the problem
> > happened here.
>
> Why not disassemble the whole u-boot?
>
> Then you'll get malloc as well, and the addresses will be closer to
> what shows up in the dump.
>
> > Do you think it's useful for your analysis?
>
> Can you disassemble malloc? That's where it actually crashed.
following is part of result that I disassemble the whole u-boot.
33f85f50 <nand_scan_tail>:
6487 33f85f50: e92d4070 push {r4, r5, r6, lr}
6488 33f85f54: e590509c ldr r5, [r0, #156]
6489 33f85f58: e595304c ldr r3, [r5, #76]
6490 33f85f5c: e3130701 tst r3, #262144 ; 0x40000
6491 33f85f60: e1a06000 mov r6, r0
6492 33f85f64: 1a000002 bne 33f85f74 <nand_scan_tail+0x24>
6493 33f85f68: e59f04ec ldr r0, [pc, #1260] ; 33f8645c
<nand_scan_tail+0x 50c>// value seen below.
6494 33f85f6c: eb0026cc bl 33f8faa4 <malloc>
6495 33f85f70: e58500dc str r0, [r5, #220]
6496 33f85f74: e59510dc ldr r1, [r5, #220]
6497 33f85f78: e3510000 cmp r1, #0 ; 0x0
6498 33f85f7c: 03e0000b mvneq r0, #11 ; 0xb
6499 33f85f80: 08bd8070 popeq {r4, r5, r6, pc}
value of pc + 1260:
33f8645c: 0000128e .word 0x0000128e
and the following is part of malloc after disassembled, you can find the
detailed content of malloc in the attachment malloc.dis file(I'm not
sure which part could be useful,so I attached whole malloc).
61 33f8fb84: 9a000004 bls 33f8fb9c <malloc+0xf8>
62 33f8fb88: e59f352c ldr r3, [pc, #1324] ; 33f900bc <malloc
+0x618>
63 33f8fb8c: e1520003 cmp r2, r3
64 33f8fb90: 91a0392a lsrls r3, sl, #18
65 33f8fb94: 83a0207e movhi r2, #126 ; 0x7e
66 33f8fb98: 9283207c addls r2, r3, #124 ; 0x7c
67 33f8fb9c: e59f3514 ldr r3, [pc, #1300] ; 33f900b8 <malloc
+0x614>
68 33f8fba0: e0834182 add r4, r3, r2, lsl #3
69 33f8fba4: e594000c ldr r0, [r4, #12]
70 33f8fba8: ea000012 b 33f8fbf8 <malloc+0x154>
71 33f8fbac: e5903004 ldr r3, [r0, #4]
72 33f8fbb0: e3c33003 bic r3, r3, #3 ; 0x3 //it seems that
exception occurs here
73 33f8fbb4: e06a1003 rsb r1, sl, r3
74 33f8fbb8: e351000f cmp r1, #15 ; 0xf
75 33f8fbbc: c2422001 subgt r2, r2, #1 ; 0x1
76 33f8fbc0: ca00000e bgt 33f8fc00 <malloc+0x15c>
77 33f8fbc4: e3510000 cmp r1, #0 ; 0x0
78 33f8fbc8: e590c00c ldr ip, [r0, #12]
79 33f8fbcc: ba000008 blt 33f8fbf4 <malloc+0x150>
80 33f8fbd0: e0803003 add r3, r0, r3
81 33f8fbd4: e5932004 ldr r2, [r3, #4]
82 33f8fbd8: e5901008 ldr r1, [r0, #8]
> > 00001a4c <nand_scan_tail>:
> > 1749 1a4c: e92d4070 push {r4, r5, r6, lr}
> > 1750 1a50: e590509c ldr r5, [r0, #156]
> > 1751 1a54: e595304c ldr r3, [r5, #76]
> > 1752 1a58: e3130701 tst r3, #262144 ; 0x40000
> > 1753 1a5c: e1a06000 mov r6, r0
> > 1754 1a60: 1a000002 bne 1a70 <nand_scan_tail+0x24>
> > 1755 1a64: e59f04ec ldr r0, [pc, #1260] ; 1f58 <nand_scan_tail
> > +0x50c>
> > 1756 1a68: ebfffffe bl 0 <malloc>
>
> What's the value at PC+1260?
It's "1f58: 0000128e .word 0x0000128e"
>
> > by the way,I cann't find the prototype of malloc in the whole project,it
> > seems that it is encapsulated in some libs.
>
> It's in common/malloc.c. There's weird preprocessor renaming going on,
> so it's called mALLOc in that file, but it shows up as malloc in the
> binary.
Thanks very much for your carefully instruction.
>
> -Scott
>
--
Best regards,
terry
-------------- next part --------------
33f8faa0 <cfree>:
33f8faa0: eaffff6f b 33f8f864 <free>
33f8faa4 <malloc>:
33f8faa4: e59f2608 ldr r2, [pc, #1544] ; 33f900b4 <malloc+0x610>
33f8faa8: e5923004 ldr r3, [r2, #4]
33f8faac: e3530000 cmp r3, #0 ; 0x0
33f8fab0: e92d47f0 push {r4, r5, r6, r7, r8, r9, sl, lr}
33f8fab4: 1a000002 bne 33f8fac4 <malloc+0x20>
33f8fab8: e5923008 ldr r3, [r2, #8]
33f8fabc: e3530000 cmp r3, #0 ; 0x0
33f8fac0: 0a000178 beq 33f900a8 <malloc+0x604>
33f8fac4: e3500000 cmp r0, #0 ; 0x0
33f8fac8: ba000176 blt 33f900a8 <malloc+0x604>
33f8facc: e280000b add r0, r0, #11 ; 0xb
33f8fad0: e3500016 cmp r0, #22 ; 0x16
33f8fad4: d3a0a010 movle sl, #16 ; 0x10
33f8fad8: da000002 ble 33f8fae8 <malloc+0x44>
33f8fadc: e3c0a007 bic sl, r0, #7 ; 0x7
33f8fae0: e35a0f7e cmp sl, #504 ; 0x1f8
33f8fae4: 2a000015 bcs 33f8fb40 <malloc+0x9c>
33f8fae8: e59f35c8 ldr r3, [pc, #1480] ; 33f900b8 <malloc+0x614>
33f8faec: e1a021aa lsr r2, sl, #3
33f8faf0: e0833182 add r3, r3, r2, lsl #3
33f8faf4: e593c00c ldr ip, [r3, #12]
33f8faf8: e15c0003 cmp ip, r3
33f8fafc: 1a000004 bne 33f8fb14 <malloc+0x70>
33f8fb00: e28c3008 add r3, ip, #8 ; 0x8
33f8fb04: e593c00c ldr ip, [r3, #12]
33f8fb08: e15c0003 cmp ip, r3
33f8fb0c: 02827002 addeq r7, r2, #2 ; 0x2
33f8fb10: 0a00003b beq 33f8fc04 <malloc+0x160>
33f8fb14: e59c3004 ldr r3, [ip, #4]
33f8fb18: e3c33003 bic r3, r3, #3 ; 0x3
33f8fb1c: e08c3003 add r3, ip, r3
33f8fb20: e5932004 ldr r2, [r3, #4]
33f8fb24: e59c000c ldr r0, [ip, #12]
33f8fb28: e59c1008 ldr r1, [ip, #8]
33f8fb2c: e3822001 orr r2, r2, #1 ; 0x1
33f8fb30: e5801008 str r1, [r0, #8]
33f8fb34: e5832004 str r2, [r3, #4]
33f8fb38: e581000c str r0, [r1, #12]
33f8fb3c: ea00004c b 33f8fc74 <malloc+0x1d0>
33f8fb40: e1b024aa lsrs r2, sl, #9
33f8fb44: 01a021aa lsreq r2, sl, #3
33f8fb48: 0a000013 beq 33f8fb9c <malloc+0xf8>
33f8fb4c: e3520004 cmp r2, #4 ; 0x4
33f8fb50: 91a0332a lsrls r3, sl, #6
33f8fb54: 92832038 addls r2, r3, #56 ; 0x38
33f8fb58: 9a00000f bls 33f8fb9c <malloc+0xf8>
33f8fb5c: e3520014 cmp r2, #20 ; 0x14
33f8fb60: 9282205b addls r2, r2, #91 ; 0x5b
33f8fb64: 9a00000c bls 33f8fb9c <malloc+0xf8>
33f8fb68: e3520054 cmp r2, #84 ; 0x54
33f8fb6c: 91a0362a lsrls r3, sl, #12
33f8fb70: 9283206e addls r2, r3, #110 ; 0x6e
33f8fb74: 9a000008 bls 33f8fb9c <malloc+0xf8>
33f8fb78: e3520f55 cmp r2, #340 ; 0x154
33f8fb7c: 91a037aa lsrls r3, sl, #15
33f8fb80: 92832077 addls r2, r3, #119 ; 0x77
33f8fb84: 9a000004 bls 33f8fb9c <malloc+0xf8>
33f8fb88: e59f352c ldr r3, [pc, #1324] ; 33f900bc <malloc+0x618>
33f8fb8c: e1520003 cmp r2, r3
33f8fb90: 91a0392a lsrls r3, sl, #18
33f8fb94: 83a0207e movhi r2, #126 ; 0x7e
33f8fb98: 9283207c addls r2, r3, #124 ; 0x7c
33f8fb9c: e59f3514 ldr r3, [pc, #1300] ; 33f900b8 <malloc+0x614>
33f8fba0: e0834182 add r4, r3, r2, lsl #3
33f8fba4: e594000c ldr r0, [r4, #12]
33f8fba8: ea000012 b 33f8fbf8 <malloc+0x154>
33f8fbac: e5903004 ldr r3, [r0, #4]
33f8fbb0: e3c33003 bic r3, r3, #3 ; 0x3
33f8fbb4: e06a1003 rsb r1, sl, r3
33f8fbb8: e351000f cmp r1, #15 ; 0xf
33f8fbbc: c2422001 subgt r2, r2, #1 ; 0x1
33f8fbc0: ca00000e bgt 33f8fc00 <malloc+0x15c>
33f8fbc4: e3510000 cmp r1, #0 ; 0x0
33f8fbc8: e590c00c ldr ip, [r0, #12]
33f8fbcc: ba000008 blt 33f8fbf4 <malloc+0x150>
33f8fbd0: e0803003 add r3, r0, r3
33f8fbd4: e5932004 ldr r2, [r3, #4]
33f8fbd8: e5901008 ldr r1, [r0, #8]
33f8fbdc: e3822001 orr r2, r2, #1 ; 0x1
33f8fbe0: e58c1008 str r1, [ip, #8]
33f8fbe4: e5832004 str r2, [r3, #4]
33f8fbe8: e581c00c str ip, [r1, #12]
33f8fbec: e2805008 add r5, r0, #8 ; 0x8
33f8fbf0: ea00012d b 33f900ac <malloc+0x608>
33f8fbf4: e1a0000c mov r0, ip
33f8fbf8: e1500004 cmp r0, r4
33f8fbfc: 1affffea bne 33f8fbac <malloc+0x108>
33f8fc00: e2827001 add r7, r2, #1 ; 0x1
33f8fc04: e59f54ac ldr r5, [pc, #1196] ; 33f900b8 <malloc+0x614>
33f8fc08: e2859008 add r9, r5, #8 ; 0x8
33f8fc0c: e599c008 ldr ip, [r9, #8]
33f8fc10: e15c0009 cmp ip, r9
33f8fc14: 0a000056 beq 33f8fd74 <malloc+0x2d0>
33f8fc18: e59c3004 ldr r3, [ip, #4]
33f8fc1c: e3c34003 bic r4, r3, #3 ; 0x3
33f8fc20: e06a0004 rsb r0, sl, r4
33f8fc24: e350000f cmp r0, #15 ; 0xf
33f8fc28: da000009 ble 33f8fc54 <malloc+0x1b0>
33f8fc2c: e08c200a add r2, ip, sl
33f8fc30: e38a3001 orr r3, sl, #1 ; 0x1
33f8fc34: e3801001 orr r1, r0, #1 ; 0x1
33f8fc38: e58c3004 str r3, [ip, #4]
33f8fc3c: e589200c str r2, [r9, #12]
33f8fc40: e5892008 str r2, [r9, #8]
33f8fc44: e7820000 str r0, [r2, r0]
33f8fc48: e9820202 stmib r2, {r1, r9}
33f8fc4c: e582900c str r9, [r2, #12]
33f8fc50: ea000007 b 33f8fc74 <malloc+0x1d0>
33f8fc54: e3500000 cmp r0, #0 ; 0x0
33f8fc58: e589900c str r9, [r9, #12]
33f8fc5c: e5899008 str r9, [r9, #8]
33f8fc60: ba000005 blt 33f8fc7c <malloc+0x1d8>
33f8fc64: e08c2004 add r2, ip, r4
33f8fc68: e5923004 ldr r3, [r2, #4]
33f8fc6c: e3833001 orr r3, r3, #1 ; 0x1
33f8fc70: e5823004 str r3, [r2, #4]
33f8fc74: e28c5008 add r5, ip, #8 ; 0x8
33f8fc78: ea00010b b 33f900ac <malloc+0x608>
33f8fc7c: e3540c02 cmp r4, #512 ; 0x200
33f8fc80: 2a00000c bcs 33f8fcb8 <malloc+0x214>
33f8fc84: e5953004 ldr r3, [r5, #4]
33f8fc88: e1a011a4 lsr r1, r4, #3
33f8fc8c: e1a00141 asr r0, r1, #2
33f8fc90: e3a02001 mov r2, #1 ; 0x1
33f8fc94: e1833012 orr r3, r3, r2, lsl r0
33f8fc98: e5853004 str r3, [r5, #4]
33f8fc9c: e0851181 add r1, r5, r1, lsl #3
33f8fca0: e5913008 ldr r3, [r1, #8]
33f8fca4: e58c100c str r1, [ip, #12]
33f8fca8: e58c3008 str r3, [ip, #8]
33f8fcac: e583c00c str ip, [r3, #12]
33f8fcb0: e581c008 str ip, [r1, #8]
33f8fcb4: ea00002e b 33f8fd74 <malloc+0x2d0>
33f8fcb8: e1a014a4 lsr r1, r4, #9
33f8fcbc: e3510004 cmp r1, #4 ; 0x4
33f8fcc0: 91a03324 lsrls r3, r4, #6
33f8fcc4: 92831038 addls r1, r3, #56 ; 0x38
33f8fcc8: 9a00000f bls 33f8fd0c <malloc+0x268>
33f8fccc: e3510014 cmp r1, #20 ; 0x14
33f8fcd0: 9281105b addls r1, r1, #91 ; 0x5b
33f8fcd4: 9a00000c bls 33f8fd0c <malloc+0x268>
33f8fcd8: e3510054 cmp r1, #84 ; 0x54
33f8fcdc: 91a03624 lsrls r3, r4, #12
33f8fce0: 9283106e addls r1, r3, #110 ; 0x6e
33f8fce4: 9a000008 bls 33f8fd0c <malloc+0x268>
33f8fce8: e3510f55 cmp r1, #340 ; 0x154
33f8fcec: 91a037a4 lsrls r3, r4, #15
33f8fcf0: 92831077 addls r1, r3, #119 ; 0x77
33f8fcf4: 9a000004 bls 33f8fd0c <malloc+0x268>
33f8fcf8: e59f33bc ldr r3, [pc, #956] ; 33f900bc <malloc+0x618>
33f8fcfc: e1510003 cmp r1, r3
33f8fd00: 91a03924 lsrls r3, r4, #18
33f8fd04: 83a0107e movhi r1, #126 ; 0x7e
33f8fd08: 9283107c addls r1, r3, #124 ; 0x7c
33f8fd0c: e59f63a4 ldr r6, [pc, #932] ; 33f900b8 <malloc+0x614>
33f8fd10: e0865181 add r5, r6, r1, lsl #3
33f8fd14: e5950008 ldr r0, [r5, #8]
33f8fd18: e1500005 cmp r0, r5
33f8fd1c: 11a02000 movne r2, r0
33f8fd20: 1a000009 bne 33f8fd4c <malloc+0x2a8>
33f8fd24: e5963004 ldr r3, [r6, #4]
33f8fd28: e1a01141 asr r1, r1, #2
33f8fd2c: e3a02001 mov r2, #1 ; 0x1
33f8fd30: e1833112 orr r3, r3, r2, lsl r1
33f8fd34: e5863004 str r3, [r6, #4]
33f8fd38: e1a03000 mov r3, r0
33f8fd3c: ea000008 b 33f8fd64 <malloc+0x2c0>
33f8fd40: e5922008 ldr r2, [r2, #8]
33f8fd44: e1520005 cmp r2, r5
33f8fd48: 0a000003 beq 33f8fd5c <malloc+0x2b8>
33f8fd4c: e5923004 ldr r3, [r2, #4]
33f8fd50: e3c33003 bic r3, r3, #3 ; 0x3
33f8fd54: e1540003 cmp r4, r3
33f8fd58: 3afffff8 bcc 33f8fd40 <malloc+0x29c>
33f8fd5c: e592300c ldr r3, [r2, #12]
33f8fd60: e1a00002 mov r0, r2
33f8fd64: e58c300c str r3, [ip, #12]
33f8fd68: e58c0008 str r0, [ip, #8]
33f8fd6c: e580c00c str ip, [r0, #12]
33f8fd70: e583c008 str ip, [r3, #8]
33f8fd74: e1a03147 asr r3, r7, #2
33f8fd78: e3a02001 mov r2, #1 ; 0x1
33f8fd7c: e1a00312 lsl r0, r2, r3
33f8fd80: e59f3330 ldr r3, [pc, #816] ; 33f900b8 <malloc+0x614>
33f8fd84: e5932004 ldr r2, [r3, #4]
33f8fd88: e1500002 cmp r0, r2
33f8fd8c: 8a00004f bhi 33f8fed0 <malloc+0x42c>
33f8fd90: e1100002 tst r0, r2
33f8fd94: 03c73003 biceq r3, r7, #3 ; 0x3
33f8fd98: 02837004 addeq r7, r3, #4 ; 0x4
33f8fd9c: 0a000001 beq 33f8fda8 <malloc+0x304>
33f8fda0: ea000003 b 33f8fdb4 <malloc+0x310>
33f8fda4: e2877004 add r7, r7, #4 ; 0x4
33f8fda8: e1a00080 lsl r0, r0, #1
33f8fdac: e1100002 tst r0, r2
33f8fdb0: 0afffffb beq 33f8fda4 <malloc+0x300>
33f8fdb4: e59f32fc ldr r3, [pc, #764] ; 33f900b8 <malloc+0x614>
33f8fdb8: e0831187 add r1, r3, r7, lsl #3
33f8fdbc: e1a05007 mov r5, r7
33f8fdc0: e1a02001 mov r2, r1
33f8fdc4: e592400c ldr r4, [r2, #12]
33f8fdc8: ea000020 b 33f8fe50 <malloc+0x3ac>
33f8fdcc: e5943004 ldr r3, [r4, #4]
33f8fdd0: e3c33003 bic r3, r3, #3 ; 0x3
33f8fdd4: e06a6003 rsb r6, sl, r3
33f8fdd8: e356000f cmp r6, #15 ; 0xf
33f8fddc: da00000e ble 33f8fe1c <malloc+0x378>
33f8fde0: e1a05004 mov r5, r4
33f8fde4: e594c00c ldr ip, [r4, #12]
33f8fde8: e5b50008 ldr r0, [r5, #8]!
33f8fdec: e084300a add r3, r4, sl
33f8fdf0: e38a1001 orr r1, sl, #1 ; 0x1
33f8fdf4: e3862001 orr r2, r6, #1 ; 0x1
33f8fdf8: e58c0008 str r0, [ip, #8]
33f8fdfc: e580c00c str ip, [r0, #12]
33f8fe00: e5841004 str r1, [r4, #4]
33f8fe04: e5893008 str r3, [r9, #8]
33f8fe08: e589300c str r3, [r9, #12]
33f8fe0c: e7836006 str r6, [r3, r6]
33f8fe10: e9830204 stmib r3, {r2, r9}
33f8fe14: e583900c str r9, [r3, #12]
33f8fe18: ea0000a3 b 33f900ac <malloc+0x608>
33f8fe1c: e3560000 cmp r6, #0 ; 0x0
33f8fe20: e594c00c ldr ip, [r4, #12]
33f8fe24: ba000008 blt 33f8fe4c <malloc+0x3a8>
33f8fe28: e0843003 add r3, r4, r3
33f8fe2c: e5932004 ldr r2, [r3, #4]
33f8fe30: e1a05004 mov r5, r4
33f8fe34: e5b51008 ldr r1, [r5, #8]!
33f8fe38: e3822001 orr r2, r2, #1 ; 0x1
33f8fe3c: e5832004 str r2, [r3, #4]
33f8fe40: e58c1008 str r1, [ip, #8]
33f8fe44: e581c00c str ip, [r1, #12]
33f8fe48: ea000097 b 33f900ac <malloc+0x608>
33f8fe4c: e1a0400c mov r4, ip
33f8fe50: e1540002 cmp r4, r2
33f8fe54: 1affffdc bne 33f8fdcc <malloc+0x328>
33f8fe58: e2855001 add r5, r5, #1 ; 0x1
33f8fe5c: e3150003 tst r5, #3 ; 0x3
33f8fe60: 12822008 addne r2, r2, #8 ; 0x8
33f8fe64: 1affffd6 bne 33f8fdc4 <malloc+0x320>
33f8fe68: e1a03007 mov r3, r7
33f8fe6c: e3130003 tst r3, #3 ; 0x3
33f8fe70: e1a02001 mov r2, r1
33f8fe74: e2433001 sub r3, r3, #1 ; 0x1
33f8fe78: 059f2238 ldreq r2, [pc, #568] ; 33f900b8 <malloc+0x614>
33f8fe7c: 05923004 ldreq r3, [r2, #4]
33f8fe80: 01c33000 biceq r3, r3, r0
33f8fe84: 05823004 streq r3, [r2, #4]
33f8fe88: 0a000002 beq 33f8fe98 <malloc+0x3f4>
33f8fe8c: e4121008 ldr r1, [r2], #-8
33f8fe90: e1510002 cmp r1, r2
33f8fe94: 0afffff4 beq 33f8fe6c <malloc+0x3c8>
33f8fe98: e59f3218 ldr r3, [pc, #536] ; 33f900b8 <malloc+0x614>
33f8fe9c: e5933004 ldr r3, [r3, #4]
33f8fea0: e1a00080 lsl r0, r0, #1
33f8fea4: e1500003 cmp r0, r3
33f8fea8: 8a000008 bhi 33f8fed0 <malloc+0x42c>
33f8feac: e3500000 cmp r0, #0 ; 0x0
33f8feb0: 0a000006 beq 33f8fed0 <malloc+0x42c>
33f8feb4: e1a07005 mov r7, r5
33f8feb8: ea000001 b 33f8fec4 <malloc+0x420>
33f8febc: e2877004 add r7, r7, #4 ; 0x4
33f8fec0: e1a00080 lsl r0, r0, #1
33f8fec4: e1100003 tst r0, r3
33f8fec8: 1affffb9 bne 33f8fdb4 <malloc+0x310>
33f8fecc: eafffffa b 33f8febc <malloc+0x418>
33f8fed0: e59f21e0 ldr r2, [pc, #480] ; 33f900b8 <malloc+0x614>
33f8fed4: e5926008 ldr r6, [r2, #8]
33f8fed8: e5963004 ldr r3, [r6, #4]
33f8fedc: e3c37003 bic r7, r3, #3 ; 0x3
33f8fee0: e06a0007 rsb r0, sl, r7
33f8fee4: e350000f cmp r0, #15 ; 0xf
33f8fee8: ca000064 bgt 33f90080 <malloc+0x5dc>
33f8feec: e59f31c0 ldr r3, [pc, #448] ; 33f900b4 <malloc+0x610>
33f8fef0: e5933034 ldr r3, [r3, #52]
33f8fef4: e5929408 ldr r9, [r2, #1032]
33f8fef8: e2833010 add r3, r3, #16 ; 0x10
33f8fefc: e3790001 cmn r9, #1 ; 0x1
33f8ff00: e083500a add r5, r3, sl
33f8ff04: 12853eff addne r3, r5, #4080 ; 0xff0
33f8ff08: 1283300f addne r3, r3, #15 ; 0xf
33f8ff0c: 13c35eff bicne r5, r3, #4080 ; 0xff0
33f8ff10: 13c5500f bicne r5, r5, #15 ; 0xf
33f8ff14: e1a00005 mov r0, r5
33f8ff18: ebfffe11 bl 33f8f764 <sbrk>
33f8ff1c: e3700001 cmn r0, #1 ; 0x1
33f8ff20: e1a04000 mov r4, r0
33f8ff24: 0a00004e beq 33f90064 <malloc+0x5c0>
33f8ff28: e0862007 add r2, r6, r7
33f8ff2c: e1500002 cmp r0, r2
33f8ff30: 2a000002 bcs 33f8ff40 <malloc+0x49c>
33f8ff34: e59f317c ldr r3, [pc, #380] ; 33f900b8 <malloc+0x614>
33f8ff38: e1560003 cmp r6, r3
33f8ff3c: 1a000048 bne 33f90064 <malloc+0x5c0>
33f8ff40: e59f116c ldr r1, [pc, #364] ; 33f900b4 <malloc+0x610>
33f8ff44: e591300c ldr r3, [r1, #12]
33f8ff48: e1540002 cmp r4, r2
33f8ff4c: e0853003 add r3, r5, r3
33f8ff50: e581300c str r3, [r1, #12]
33f8ff54: 1a000005 bne 33f8ff70 <malloc+0x4cc>
33f8ff58: e59f2158 ldr r2, [pc, #344] ; 33f900b8 <malloc+0x614>
33f8ff5c: e0853007 add r3, r5, r7
33f8ff60: e5922008 ldr r2, [r2, #8]
33f8ff64: e3833001 orr r3, r3, #1 ; 0x1
33f8ff68: e5823004 str r3, [r2, #4]
33f8ff6c: ea000033 b 33f90040 <malloc+0x59c>
33f8ff70: e3790001 cmn r9, #1 ; 0x1
33f8ff74: 10843003 addne r3, r4, r3
33f8ff78: 059f3138 ldreq r3, [pc, #312] ; 33f900b8 <malloc+0x614>
33f8ff7c: 10623003 rsbne r3, r2, r3
33f8ff80: 05834408 streq r4, [r3, #1032]
33f8ff84: 1581300c strne r3, [r1, #12]
33f8ff88: e2143007 ands r3, r4, #7 ; 0x7
33f8ff8c: 12630008 rsbne r0, r3, #8 ; 0x8
33f8ff90: 01a00003 moveq r0, r3
33f8ff94: e2853eff add r3, r5, #4080 ; 0xff0
33f8ff98: 10844000 addne r4, r4, r0
33f8ff9c: e283300f add r3, r3, #15 ; 0xf
33f8ffa0: e0843003 add r3, r4, r3
33f8ffa4: e3c33eff bic r3, r3, #4080 ; 0xff0
33f8ffa8: e0842005 add r2, r4, r5
33f8ffac: e3c3300f bic r3, r3, #15 ; 0xf
33f8ffb0: e0623003 rsb r3, r2, r3
33f8ffb4: e0835000 add r5, r3, r0
33f8ffb8: e1a00005 mov r0, r5
33f8ffbc: ebfffde8 bl 33f8f764 <sbrk>
33f8ffc0: e3700001 cmn r0, #1 ; 0x1
33f8ffc4: e1a03000 mov r3, r0
33f8ffc8: 0a000025 beq 33f90064 <malloc+0x5c0>
33f8ffcc: e59f00e0 ldr r0, [pc, #224] ; 33f900b4 <malloc+0x610>
33f8ffd0: e59f10e0 ldr r1, [pc, #224] ; 33f900b8 <malloc+0x614>
33f8ffd4: e590200c ldr r2, [r0, #12]
33f8ffd8: e0643003 rsb r3, r4, r3
33f8ffdc: e0853003 add r3, r5, r3
33f8ffe0: e0852002 add r2, r5, r2
33f8ffe4: e3833001 orr r3, r3, #1 ; 0x1
33f8ffe8: e1560001 cmp r6, r1
33f8ffec: e580200c str r2, [r0, #12]
33f8fff0: e5814008 str r4, [r1, #8]
33f8fff4: e5843004 str r3, [r4, #4]
33f8fff8: 0a000010 beq 33f90040 <malloc+0x59c>
33f8fffc: e357000f cmp r7, #15 ; 0xf
33f90000: 93a03001 movls r3, #1 ; 0x1
33f90004: 95843004 strls r3, [r4, #4]
33f90008: 9a000015 bls 33f90064 <malloc+0x5c0>
33f9000c: e5963004 ldr r3, [r6, #4]
33f90010: e247200c sub r2, r7, #12 ; 0xc
33f90014: e3c22007 bic r2, r2, #7 ; 0x7
33f90018: e2033001 and r3, r3, #1 ; 0x1
33f9001c: e1823003 orr r3, r2, r3
33f90020: e3a01005 mov r1, #5 ; 0x5
33f90024: e352000f cmp r2, #15 ; 0xf
33f90028: e0862002 add r2, r6, r2
33f9002c: e5863004 str r3, [r6, #4]
33f90030: e5821008 str r1, [r2, #8]
33f90034: e5821004 str r1, [r2, #4]
33f90038: 82860008 addhi r0, r6, #8 ; 0x8
33f9003c: 8bfffe08 blhi 33f8f864 <free>
33f90040: e59f106c ldr r1, [pc, #108] ; 33f900b4 <malloc+0x610>
33f90044: e591200c ldr r2, [r1, #12]
33f90048: e5913038 ldr r3, [r1, #56]
33f9004c: e1520003 cmp r2, r3
33f90050: 85812038 strhi r2, [r1, #56]
33f90054: e59f1058 ldr r1, [pc, #88] ; 33f900b4 <malloc+0x610>
33f90058: e591303c ldr r3, [r1, #60]
33f9005c: e1520003 cmp r2, r3
33f90060: 8581203c strhi r2, [r1, #60]
33f90064: e59f304c ldr r3, [pc, #76] ; 33f900b8 <malloc+0x614>
33f90068: e5933008 ldr r3, [r3, #8]
33f9006c: e5933004 ldr r3, [r3, #4]
33f90070: e3c33003 bic r3, r3, #3 ; 0x3
33f90074: e06a0003 rsb r0, sl, r3
33f90078: e350000f cmp r0, #15 ; 0xf
33f9007c: da000009 ble 33f900a8 <malloc+0x604>
33f90080: e59fc030 ldr ip, [pc, #48] ; 33f900b8 <malloc+0x614>
33f90084: e59c2008 ldr r2, [ip, #8]
33f90088: e3800001 orr r0, r0, #1 ; 0x1
33f9008c: e082100a add r1, r2, sl
33f90090: e38a3001 orr r3, sl, #1 ; 0x1
33f90094: e5823004 str r3, [r2, #4]
33f90098: e58c1008 str r1, [ip, #8]
33f9009c: e5810004 str r0, [r1, #4]
33f900a0: e2825008 add r5, r2, #8 ; 0x8
33f900a4: ea000000 b 33f900ac <malloc+0x608>
33f900a8: e3a05000 mov r5, #0 ; 0x0
33f900ac: e1a00005 mov r0, r5
33f900b0: e8bd87f0 pop {r4, r5, r6, r7, r8, r9, sl, pc}
33f900b4: 33fa3e20 .word 0x33fa3e20
33f900b8: 33f9ff54 .word 0x33f9ff54
33f900bc: 00000554 .word 0x00000554
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