SOC OV788开发：5.cpu 大小端判断

SOC OV788开发：5.cpu 大小端判断

big endian， OV788 is big

HI3518e is little

1.HI3518e

linux@ubuntu:~/data/work/HIS3518e_new/HIS3518e/third_ko/hi_dmac$ file hi_dmac.o

hi_dmac.o: ELF 32-bit LSB relocatable, ARM, version 1 (SYSV), not stripped

linux@ubuntu:~/data/work/HIS3518e_new/HIS3518e/third_ko/hi_dmac$ readelf -h hi_dmac.o

ELF Header:

Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00

Class: ELF32

Data: 2’s complement, little endian

Version: 1 (current)

OS/ABI: UNIX - System V

ABI Version: 0

Type: REL (Relocatable file)

Machine: ARM

Version: 0x1

Entry point address: 0x0

Start of program headers: 0 (bytes into file)

Start of section headers: 58032 (bytes into file)

Flags: 0x5000000, Version5 EABI

Size of this header: 52 (bytes)

Size of program headers: 0 (bytes)

Number of program headers: 0

Size of section headers: 40 (bytes)

Number of section headers: 69

Section header string table index: 66

2.ov78

.linux@ubuntu:~/sdk_ov788/OV788_SDK_52786_1396/Firmware/OV788_SDK_src.52791.1396/lib_r2mp$ file libusb_chip.rel

libusb_chip.rel: ELF 32-bit MSB relocatable, version 1 MathCoPro/FPU/MAU Required, not stripped

linux@ubuntu:~/sdk_ov788/OV788_SDK_52786_1396/Firmware/OV788_SDK_src.52791.1396/lib_r2mp$ readelf -h libusb_chip.rel

ELF Header:

Magic: 7f 45 4c 46 01 02 01 00 03 00 00 00 00 00 00 00

Class: ELF32

Data: 2’s complement, big endian

Version: 1 (current)

OS/ABI: UNIX - System V

ABI Version: 3

Type: REL (Relocatable file)

Machine: OpenRISC

Version: 0x1

Entry point address: 0x0

Start of program headers: 0 (bytes into file)

Start of section headers: 4428 (bytes into file)

Flags: 0x1

Size of this header: 52 (bytes)

Size of program headers: 0 (bytes)

Number of program headers: 0

Size of section headers: 40 (bytes)

Number of section headers: 40

Section header string table index: 37

文章来源: blog.csdn.net，作者：悟空胆好小，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/xushx_bigbear/article/details/123079167