When is it decided where the stack, global, and frame pointers are in memory? I’m trying to load an ELF executable into a simulator and I can’t figure out what instructions load the global, stack and frame pointers into the regfile.
Share
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
When is it decided where the stack, global, and frame pointers are in memory? I’m trying to load an ELF executable into a simulator and I can’t figure out what instructions load the global, stack and frame pointers into the regfile.
It depends on the architecture, but generally the kernel sets up the initial stack and frame pointers before any user-space instructions execute, and the global pointer (if any) is established by the dynamic linker. The “initial process state” section of your architecture’s ABI supplement will explain a lot of this stuff, but for the rest you will probably need to read the source code for your dynamic linker.
If your simulator is user-space only it has to do the kernel’s job.