Error Description: Linux kernel and file system build a good, natural is to run a hello world to show respect, but the problem arises. . / The Hello Tip: the Hello ( 46 ): undefined Instruction: PC = (ptrval) the CPU: 0 PID : 46 Comm: LED2 Not Tainted 5.2 . 6 # 23 Hardware name: SMDK2440 PC IS AT 0xb6f05328 LR IS AT 0xb6f00734 PC: [ <b6f05328>] LR: [<b6f00734>] PSR: 80.00001 million SP: beeb6c00 ip: beeb6ea0 fp: b6f00418 r10: b6f00734 r9: b6f00288 r8: beeb6c20 r7: b6f00000 R6: 0002702c r5: r4 b6f006ec: b6f00000 r3:00000001 r2 : 00026f10 r1 : 00001915 r0 : 000000a0 Flags: Nzcv IRQs on FIQs on Mode USER_32 ISA ARM Segment user Control: c000717f Table: 33034000 DAC: 00000055 Code: e59b2004 e203300f e59d7020 e353000a (e6ef1071) Illegal instruction
Tip undefined instruction undefined instruction. This time, the first experience is manifested. This is when I compile busybox like, I think my current version of the compiler is ARM -linux-gcc 4.6 . 4 compiled applications for me this s3c2440c is so new, I do not support this new arm cpu command, so the compiler error. so I switch to arm -linux gcc- 3 . + version. this should be thinking about it. again execution Tip: - / bin / SH: ./ the Hello: not found after Baidu: find ways to troubleshoot the error: 1 on Ubuntu:. readelf the Hello -a view ELF information:
程序头： Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align PHDR 0x000034 0x00008034 0x00008034 0x000c0 0x000c0 R E 0x4 INTERP 0x0000f4 0x000080f4 0x000080f4 0x00013 0x00013 R 0x1 [Requesting program interpreter: /lib/ld-linux.so.2] LOAD 0x000000 0x00008000 0x00008000 0x00750 0x00750 R E 0x8000 LOAD 0x000750 0x00010750 0x00010750 0x00128 0x0012c RW 0x8000 DYNAMIC 0x000760 0x00010760 0x00010760 0x000c8 0x000c8 RW 0x4 NOTE 0x000108 0x00008108 0x00008108 0x00020 0x00020 R 0x4
See the keyword; depends on /lib/ld-linux.so. 2 Well, I have not it ? / Usr / sbin # LS / lib / LD -linux.so. 3 libc.so. 6 libm.so. 6 modules tmp I actually LD -linux.so. 3 this time I think of it: the LD -linux.so. 3 is from my Linux-ARM-gcc 4.6 . 4 copies of the compiler's over, and now I replaced gcc3, it may not be supported. solution: so drop all lib files again from ARM -linux-gcc 3 + copy folder. compile, execute successfully.
Summary: What version of the compiler, lib library files to use the following corresponding version, so as to execute successfully.