riscv/musl - musl - Gitea: Git with a cup of tea

Rich Felker 5baf2d92d3 ldso: use __ehdr_start if available to locate its own ELF headers previously, the relative load address was used as the address at which to find the ELF headers. this only works if two conditions are met: ldso is linked to start at a virtual address of 0, and the linker is cooperative and includes the main ELF headers in a loadable segment. while in practice these are always met, modern linkers provide a __ehdr_start symbol pointing to the ELF headers, and can in principle use the reference to this symbol as an indication that they need to be mapped in a segment. this also should make it possible to link for a different starting virtual address, if that's ever desirable.	3 years ago
..
dlstart.c	process DT_RELR relocations in ldso-startup/static-pie	4 years ago
dynlink.c	ldso: use __ehdr_start if available to locate its own ELF headers	3 years ago

Rich Felker 5baf2d92d3 ldso: use __ehdr_start if available to locate its own ELF headers

previously, the relative load address was used as the address at which
to find the ELF headers. this only works if two conditions are met:
ldso is linked to start at a virtual address of 0, and the linker is
cooperative and includes the main ELF headers in a loadable segment.

while in practice these are always met, modern linkers provide a
__ehdr_start symbol pointing to the ELF headers, and can in principle
use the reference to this symbol as an indication that they need to be
mapped in a segment. this also should make it possible to link for a
different starting virtual address, if that's ever desirable.

3 years ago

dlstart.c

process DT_RELR relocations in ldso-startup/static-pie

4 years ago

dynlink.c

ldso: use __ehdr_start if available to locate its own ELF headers

3 years ago