[v4,1/4] elf: Consolidate stackinfo.h

Message ID	20240725201159.3286231-2-adhemerval.zanella@linaro.org
State	New
Headers	show Return-Path: <libc-alpha-bounces~incoming=patchwork.ozlabs.org@sourceware.org> DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org E12813858C33 From: Adhemerval Zanella <adhemerval.zanella@linaro.org> To: libc-alpha@sourceware.org Subject: [PATCH v4 1/4] elf: Consolidate stackinfo.h Date: Thu, 25 Jul 2024 17:05:17 -0300 Message-ID: <20240725201159.3286231-2-adhemerval.zanella@linaro.org> In-Reply-To: <20240725201159.3286231-1-adhemerval.zanella@linaro.org> References: <20240725201159.3286231-1-adhemerval.zanella@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: list Errors-To: libc-alpha-bounces~incoming=patchwork.ozlabs.org@sourceware.org
Series	Improve executable stack handling \| expand [v4,0/4] Improve executable stack handling [v4,1/4] elf: Consolidate stackinfo.h [v4,2/4] elf: Do not change stack permission on dlopen/dlmopen [v4,3/4] elf: Add tst-execstack-prog-static [v4,4/4] elf: Add glibc.rtld.execstack

diff --git a/sysdeps/aarch64/stackinfo.h b/sysdeps/aarch64/stackinfo.h deleted file mode 100644 index 5a4dce7309..0000000000 --- a/sysdeps/aarch64/stackinfo.h +++ /dev/null @@ -1,33 +0,0 @@ -/* Copyright (C) 2001-2024 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 - <https://www.gnu.org/licenses/>. */ - -/* This file contains a bit of information about the stack allocation - of the processor. */ - -#ifndef _STACKINFO_H -#define _STACKINFO_H 1 - -#include <elf.h> - -/* On AArch64 the stack grows down. */ -#define _STACK_GROWS_DOWN 1 - -/* Default to a non-executable stack. */ -#define DEFAULT_STACK_PERMS (PF_R|PF_W) - -#endif /* stackinfo.h */ diff --git a/sysdeps/arc/stackinfo.h b/sysdeps/arc/stackinfo.h deleted file mode 100644 index 99a7f56ea0..0000000000 --- a/sysdeps/arc/stackinfo.h +++ /dev/null @@ -1,33 +0,0 @@ -/* Stack environment definitions for ARC. - Copyright (C) 2020-2024 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 - <https://www.gnu.org/licenses/>. */ - -/* This file contains a bit of information about the stack allocation - of the processor. */ - -#ifndef _STACKINFO_H -#define _STACKINFO_H 1 - -#include <elf.h> - -/* On ARC the stack grows down. */ -#define _STACK_GROWS_DOWN 1 - -/* Default to a non-executable stack. */ -#define DEFAULT_STACK_PERMS (PF_R|PF_W) - -#endif /* stackinfo.h */ diff --git a/sysdeps/csky/stackinfo.h b/sysdeps/csky/stackinfo.h deleted file mode 100644 index ef22fa3249..0000000000 --- a/sysdeps/csky/stackinfo.h +++ /dev/null @@ -1,29 +0,0 @@ -/* Stack environment definitions. C-SKY version. - Copyright (C) 2018-2024 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 - <https://www.gnu.org/licenses/>. */ - -#ifndef _STACKINFO_H -#define _STACKINFO_H 1 - -#include <elf.h> - -/* On C-SKY the stack grows down. */ -#define _STACK_GROWS_DOWN 1 - -#define DEFAULT_STACK_PERMS (PF_R|PF_W) - -#endif /* stackinfo.h */ diff --git a/sysdeps/generic/stackinfo.h b/sysdeps/generic/stackinfo.h index bf752ce94d..51e5f92055 100644 --- a/sysdeps/generic/stackinfo.h +++ b/sysdeps/generic/stackinfo.h @@ -15,6 +15,15 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -/* This file contains a bit of information about the stack allocation - of the processor. Since there is no general truth we can't say - anything here. */ +/* This file contains a bit of information about the stack allocation of the + processor. Default to a non executable stack that grows downwards. */ + +#ifndef _STACKINFO_H +#define _STACKINFO_H 1 + +#include <elf.h> + +#define _STACK_GROWS_DOWN 1 +#define DEFAULT_STACK_PERMS (PF_R|PF_W) + +#endif diff --git a/sysdeps/loongarch/stackinfo.h b/sysdeps/loongarch/stackinfo.h deleted file mode 100644 index 6ee50552b7..0000000000 --- a/sysdeps/loongarch/stackinfo.h +++ /dev/null @@ -1,33 +0,0 @@ -/* Stack environment definitions for LoongArch. - Copyright (C) 2022-2024 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 - <https://www.gnu.org/licenses/>. */ - -/* This file contains a bit of information about the stack allocation - of the processor. */ - -#ifndef _STACKINFO_H -#define _STACKINFO_H 1 - -#include <elf.h> - -/* On LoongArch the stack grows down. */ -#define _STACK_GROWS_DOWN 1 - -/* Default to a non-executable stack. */ -#define DEFAULT_STACK_PERMS (PF_R | PF_W) - -#endif /* stackinfo.h */ diff --git a/sysdeps/nios2/stackinfo.h b/sysdeps/nios2/stackinfo.h deleted file mode 100644 index e67d53ee87..0000000000 --- a/sysdeps/nios2/stackinfo.h +++ /dev/null @@ -1,33 +0,0 @@ -/* Stack environment definitions for Nios II. - Copyright (C) 2012-2024 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 - <https://www.gnu.org/licenses/>. */ - -/* This file contains a bit of information about the stack allocation - of the processor. */ - -#ifndef _STACKINFO_H -#define _STACKINFO_H 1 - -#include <elf.h> - -/* On Nios II the stack grows down. */ -#define _STACK_GROWS_DOWN 1 - -/* Default to a non-executable stack. */ -#define DEFAULT_STACK_PERMS (PF_R|PF_W) - -#endif /* stackinfo.h */ diff --git a/sysdeps/powerpc/stackinfo.h b/sysdeps/powerpc/powerpc32/stackinfo.h similarity index 82% rename from sysdeps/powerpc/stackinfo.h rename to sysdeps/powerpc/powerpc32/stackinfo.h index 410689bc27..2ca360068a 100644 --- a/sysdeps/powerpc/stackinfo.h +++ b/sysdeps/powerpc/powerpc32/stackinfo.h @@ -26,13 +26,7 @@ /* On PPC the stack grows down. */ #define _STACK_GROWS_DOWN 1 -#if __WORDSIZE == 64 -/* PPC64 doesn't need an executable stack and doesn't need PT_GNU_STACK - * to make the stack nonexecutable. */ -# define DEFAULT_STACK_PERMS (PF_R|PF_W) -#else /* PF_X can be overridden if PT_GNU_STACK is present but is presumed absent. */ -# define DEFAULT_STACK_PERMS (PF_R|PF_W|PF_X) -#endif +#define DEFAULT_STACK_PERMS (PF_R|PF_W|PF_X) #endif /* stackinfo.h */ diff --git a/sysdeps/riscv/stackinfo.h b/sysdeps/riscv/stackinfo.h deleted file mode 100644 index a786d4f9b0..0000000000 --- a/sysdeps/riscv/stackinfo.h +++ /dev/null @@ -1,33 +0,0 @@ -/* Stack environment definitions for RISC-V. - Copyright (C) 2011-2024 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 - <https://www.gnu.org/licenses/>. */ - -/* This file contains a bit of information about the stack allocation - of the processor. */ - -#ifndef _STACKINFO_H -#define _STACKINFO_H 1 - -#include <elf.h> - -/* On RISC-V the stack grows down. */ -#define _STACK_GROWS_DOWN 1 - -/* Default to a non-executable stack. */ -#define DEFAULT_STACK_PERMS (PF_R | PF_W) - -#endif /* stackinfo.h */

[v4,1/4] elf: Consolidate stackinfo.h

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