Why does GCC use additional registers for pushing values onto the stack?

Advertisements This C code void test_function(int a, int b, int c, int d) {} int main() { test_function(1, 2, 3, 4); return 0; } gets compiled by GCC (no flags, version 12.1.1, target x86_64-redhat-linux) into 0000000000401106 <test_function>: 401106: 55 push rbp 401107: 48 89 e5 mov rbp,rsp 40110a: 89 7d fc mov DWORD PTR [rbp-0x4],edi… Read More Why does GCC use additional registers for pushing values onto the stack?

Understanding address assignment to registers via assembly instructions

Advertisements If I have a CPU/system with the following characteristics… 16 bit architecture (16 bit registers and bus) 8 total registers A set of 64 assembly instructions And assuming my assembly instructions follow the format… OPCode (6 bits) + Register (3 bits) + Register (3 bits) + Unused (4 bits) ** Example Instructions (below) **… Read More Understanding address assignment to registers via assembly instructions

AWS Lambda java.lang.ClassNotFoundException: com.opencsv.exceptions.CsvException

Advertisements I am getting below mentioned error while running code on AWS lambda – START RequestId: cd42e5ab-fbc8-4f50-8c4f-e8257525bd78 Version: $LATEST Error loading method handler on class com.test.myapp: java.lang.NoClassDefFoundError java.lang.NoClassDefFoundError: com/opencsv/exceptions/CsvException at java.base/java.lang.Class.getDeclaredMethods0(Native Method) at java.base/java.lang.Class.privateGetDeclaredMethods(Unknown Source) at java.base/java.lang.Class.privateGetPublicMethods(Unknown Source) at java.base/java.lang.Class.getMethods(Unknown Source) Caused by: java.lang.ClassNotFoundException: com.opencsv.exceptions.CsvException. Current classpath: file:/var/task/ I am working on IntelliJ created a… Read More AWS Lambda java.lang.ClassNotFoundException: com.opencsv.exceptions.CsvException