musl - musl - an implementation of the standard library for Linux-based systems

use an accessor function for __libc data pointer when compiled as PIC

prior to this change, a large portion of libc was unusable prior to relocation by the dynamic linker, due to dependence on the global data in the __libc structure and the need to obtain its address through the GOT. with this patch, the accessor function __libc_loc is now able to obtain the address of __libc via PC-relative addressing without using the GOT. this means the majority of libc functionality is now accessible right away. naturally, the above statements all depend on having an architecture where PC-relative addressing and jumps/calls are feasible, and a compiler that generates the appropriate code.

Diffstat (limited to 'src/internal/libc.c')

1 files changed, 9 insertions, 1 deletions