Author: kib Date: Sun Nov 18 10:22:42 2018 New Revision: 340557 URL: https://svnweb.freebsd.org/changeset/base/340557
Log: MFC r339897: Remove rtld use of libc amd64_set_fsbase(). Modified: stable/11/libexec/rtld-elf/amd64/reloc.c Directory Properties: stable/11/ (props changed) Modified: stable/11/libexec/rtld-elf/amd64/reloc.c ============================================================================== --- stable/11/libexec/rtld-elf/amd64/reloc.c Sun Nov 18 09:58:36 2018 (r340556) +++ stable/11/libexec/rtld-elf/amd64/reloc.c Sun Nov 18 10:22:42 2018 (r340557) @@ -33,8 +33,9 @@ #include <sys/param.h> #include <sys/mman.h> -#include <machine/sysarch.h> #include <machine/cpufunc.h> +#include <machine/specialreg.h> +#include <machine/sysarch.h> #include <dlfcn.h> #include <err.h> @@ -490,17 +491,26 @@ pre_init(void) } +int __getosreldate(void); + void allocate_initial_tls(Obj_Entry *objs) { - /* - * Fix the size of the static TLS block by using the maximum - * offset allocated so far and adding a bit for dynamic modules to - * use. - */ - tls_static_space = tls_last_offset + RTLD_STATIC_TLS_EXTRA; - amd64_set_fsbase(allocate_tls(objs, 0, - 3*sizeof(Elf_Addr), sizeof(Elf_Addr))); + void *addr; + + /* + * Fix the size of the static TLS block by using the maximum + * offset allocated so far and adding a bit for dynamic + * modules to use. + */ + tls_static_space = tls_last_offset + RTLD_STATIC_TLS_EXTRA; + + addr = allocate_tls(objs, 0, 3 * sizeof(Elf_Addr), sizeof(Elf_Addr)); + if (__getosreldate() >= P_OSREL_WRFSBASE && + (cpu_stdext_feature & CPUID_STDEXT_FSGSBASE) != 0) + wrfsbase((uintptr_t)addr); + else + sysarch(AMD64_SET_FSBASE, &addr); } void *__tls_get_addr(tls_index *ti) _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"