From 4fb4e7e821e36180835bf88e363f9f13b5797e3a Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Sun, 5 Dec 2021 13:50:17 +0100 Subject: csu: Always use __executable_start in gmon-start.c Current binutils defines __executable_start as the lowest text address, so using the entry point address as a fallback is no longer necessary. As a result, overriding is only necessary if the entry point is not called _start. The previous approach to define __ASSEMBLY__ to suppress the declaration breaks if headers included by are not compatible with __ASSEMBLY__. This happens with rseq integration because it is necessary to include kernel headers in more places. Reviewed-by: H.J. Lu --- sysdeps/hppa/entry.h | 13 ------------- sysdeps/ia64/entry.h | 13 ------------- sysdeps/powerpc/powerpc64/entry.h | 37 ------------------------------------- 3 files changed, 63 deletions(-) delete mode 100644 sysdeps/hppa/entry.h delete mode 100644 sysdeps/ia64/entry.h delete mode 100644 sysdeps/powerpc/powerpc64/entry.h (limited to 'sysdeps') diff --git a/sysdeps/hppa/entry.h b/sysdeps/hppa/entry.h deleted file mode 100644 index 5ea5b47448..0000000000 --- a/sysdeps/hppa/entry.h +++ /dev/null @@ -1,13 +0,0 @@ -#ifndef __ASSEMBLY__ -extern void _start (void); -#endif - -/* Lives in libgcc.so and canonicalizes function pointers for comparison. */ -extern unsigned int __canonicalize_funcptr_for_compare (unsigned int fptr); - -/* The function's entry point is stored in the first word of the - function descriptor (plabel) of _start(). */ -#define ENTRY_POINT __canonicalize_funcptr_for_compare((unsigned int)_start) - -/* We have to provide a special declaration. */ -#define ENTRY_POINT_DECL(class) class void _start (void); diff --git a/sysdeps/ia64/entry.h b/sysdeps/ia64/entry.h deleted file mode 100644 index e11b49fc53..0000000000 --- a/sysdeps/ia64/entry.h +++ /dev/null @@ -1,13 +0,0 @@ -#include -#include - -#ifndef __ASSEMBLY__ -extern void _start (void); -#endif - -/* The function's entry point is stored in the first word of the - function descriptor (plabel) of _start(). */ -#define ENTRY_POINT ELF_PTR_TO_FDESC (_start)->ip - -/* We have to provide a special declaration. */ -#define ENTRY_POINT_DECL(class) class void _start (void); diff --git a/sysdeps/powerpc/powerpc64/entry.h b/sysdeps/powerpc/powerpc64/entry.h deleted file mode 100644 index 99c81cb982..0000000000 --- a/sysdeps/powerpc/powerpc64/entry.h +++ /dev/null @@ -1,37 +0,0 @@ -/* Finding the entry point and start of text. PowerPC64 version. - Copyright (C) 2002-2021 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - - -#ifndef __ASSEMBLY__ -extern void _start (void); -#endif - -#define ENTRY_POINT _start - -#if _CALL_ELF != 2 -/* We have to provide a special declaration. */ -#define ENTRY_POINT_DECL(class) class void _start (void); - -/* Use the address of ._start as the lowest address for which we need - to keep profiling records. We can't copy the ia64 scheme as our - entry poiny address is really the address of the function - descriptor, not the actual function entry. */ -#define TEXT_START \ - ({ extern unsigned long int _start_as_data[] asm ("_start"); \ - _start_as_data[0]; }) -#endif -- cgit 1.4.1