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

Age	Commit message (Collapse)	Author	Lines
40 hours	vdso: add support for GNU hash tables	Tomáš Hulata	-2/+26
	on some kernel builds, the vdso exports symbols with DT_GNU_HASH but omits DT_HASH, causing the vdso not to get used and for clock_gettime to fall back to using a syscall. our vdso resolver does not use the hash table anyway, but does need the symbol count from the standard sysv hash table. if it's missing, use the GNU hashtable to calculate the number of symbols.
2016-11-11	treat null vdso base same as missing	Bobby Bingham	-0/+1
	On s390x, the kernel provides AT_SYSINFO_EHDR, but sets it to zero, if the program being run does not have a program interpreter. This causes problems when running the dynamic linker directly.
2016-11-11	generalize ELF hash table types not to assume 32-bit entries	Rich Felker	-1/+2
	alpha and s390x gratuitously use 64-bit entries (wasting 2x space and cache utilization) despite the values always being 32-bit. based on patch by Bobby Bingham, with changes suggested by Alexander Monakov to use the public Elf_Symndx type from link.h (and make it properly variable by arch) rather than adding new internal infrastructure for handling the type.
2014-04-16	add working vdso clock_gettime support, including static linking	Rich Felker	-0/+91
	the vdso symbol lookup code is based on the original 2011 patch by Nicholas J. Kain, with some streamlining, pointer arithmetic fixes, and one symbol version matching fix. on the consumer side (clock_gettime), per-arch macros for the particular symbol name and version to lookup are added in syscall_arch.h, and no vdso code is pulled in on archs which do not define these macros. at this time, vdso is enabled only on x86_64. the vdso support at the dynamic linker level is no longer useful to libc, but is left in place for the sake of debuggers (which may need the vdso in the link map to find its functions) and possibly use with dlsym.