learnboy007的专栏

本文参考文献: http://cross-lfs.org/view/clfs-sysroot/arm/cross-tools/chapter.html http://blog.chinaunix.net/uid-436750-id-2123570.html 感谢youbest的深刻分析！感谢Google！（额，怎么不感谢百度呢? 你懂的。。。) 本文的疏漏和不足之处，还请大家慷慨指出，共同

例如：把链接器指向/tools 目录中的版本 SPECS=`dirname $(gcc -print-libgcc-file-name)`/specs gcc -dumpspecs | sed \   -e 's@/lib\(64\)\?/ld@/tools&@g' \   -e "/^\*cpp:$/{n;s,$, -isystem /tools/include,}" > $SPECS

Registers galore x86 has just 8 general-purpose registers available (eax, ebx, ecx, edx, ebp, esp, esi, edi). x64 extended them to 64 bits (prefix "r" instead of "e") and added another 8 (r8, r9,