GAS

Jonathan Wakely jwakely.gcc@gmail.com
Mon May 18 12:27:00 GMT 2015


On 18 May 2015 at 13:23, Saidgani wrote:
> Hello. I have a question: How does GCC x64 put parametrs of the function on
> C language in stack or registers. In x32 architecture it was simple. all
> parametrs of function was put in stack . But in x64 gcc puts some parametrs
> in %rdi, %rsi, %r8d, %r9d registers, and some parametrs in stack. How does
> it work generally?

This is defined by the x86_64 psABI:
http://refspecs.linuxfoundation.org/elf/x86-64-abi-0.99.pdf



More information about the Gcc-help mailing list