ARM移植时的OABI与EABI
1。什么是ABI
ABI，application binary interface (ABI)，
ELF 32-bit LSB executable, ARM, version 1 (ARM), for GNU/Linux 2.2.0, dynamically linked (uses shared libs), for GNU/Linux 2.2.0, stripped
* "readelf -h | grep Flags""
Flags: 0x0
EABI：
* ABI flags passed by gcc to binutils: -mabi=aapcs-linux -mfloat-abi=soft -meabi=4
* gcc -dumpmachine: arm-unknown-linux-gnueabi
* objdump -x for compiled binary:
private flags = 4000002: [Version4 EABI] [has entry point]
* "file" on compiled binary (under Debian):
ELF 32-bit LSB executable, ARM, version 1 (SYSV), for GNU/Linux 2.4.17, dynamically linked (uses shared libs), for GNU/Linux 2.4.17, stripped
* "readelf -h | grep Flags""
Flags: 0x4000002, has entry point, Version4 EABI
［参考］
1。ABI/EABI/OABI
http://blog.csdn.net/hongjiujing/archive/2008/07/21/2686556.aspx
2。Why ARM's EABI Matters
http://www.chineselinuxuniversity.net/articles/1255.shtml
3.[PDF] The new arm ABI (EABI) and Debian armel port
下载此文件 （29 个页面）
4，ArmEabiPort http://wiki.debian.org/ArmEabiPort
5，arm官方的EABI标准文档
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.subset.swdev.abi/index.html
