chengjin76

Manipulating the Class File with AsmTools

Posted on May 27, 2020May 29, 2020 by chengjin76

A Java class file is represented with a hardware & OS independent binary format to be loaded & interpreted at runtime. Except the magic number (the first 4 bytes such as CAFEBABE) and the version number (the 8th byte) which are visible or can be manually edited in a hexadecimal way, modifying the majority of…

Compiling a 32-bit Windows SDK (Java 8)

Posted on June 20, 2018September 13, 2018 by chengjin76

Interested in compiling your own 32-bit Windows SDK but getting stuck somewhere along the way? The good news is that there are freshly updated Java 8 build instructions in the openj9 git repo for 32-bit Windows which will help you out with more details from start to finish. The new spec covers all of the…