From 3d3316b1dee885153d44210b2e95dba68d00613a Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Tue, 10 Nov 2020 23:35:19 +0000 Subject: hurd: keep only required PLTs in ld.so We need NO_RTLD_HIDDEN because of the need for PLT calls in ld.so. See Roland's comment in https://sourceware.org/bugzilla/show_bug.cgi?id=15605 "in the Hurd it's crucial that calls like __mmap be the libc ones instead of the rtld-local ones after the bootstrap phase, when the dynamic linker is being used for dlopen and the like." We used to just avoid all hidden use in the rtld ; this commit switches to keeping only those that should use PLT calls, i.e. essentially those defined in sysdeps/mach/hurd/dl-sysdep.c: __assert_fail __assert_perror_fail __*stat64 _exit This fixes a few startup issues, notably the call to __tunable_get_val that is made before PLTs are set up. --- sysdeps/i386/dl-tlsdesc.S | 4 ---- 1 file changed, 4 deletions(-) (limited to 'sysdeps/i386') diff --git a/sysdeps/i386/dl-tlsdesc.S b/sysdeps/i386/dl-tlsdesc.S index 32383e3bad..6d57739515 100644 --- a/sysdeps/i386/dl-tlsdesc.S +++ b/sysdeps/i386/dl-tlsdesc.S @@ -129,11 +129,7 @@ _dl_tlsdesc_dynamic: .p2align 4,,7 .Lslow: cfi_adjust_cfa_offset (28) -#ifdef NO_RTLD_HIDDEN - call JUMPTARGET (___tls_get_addr) -#else call HIDDEN_JUMPTARGET (___tls_get_addr) -#endif jmp .Lret cfi_endproc .size _dl_tlsdesc_dynamic, .-_dl_tlsdesc_dynamic -- cgit 1.4.1