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From: Florian Weimer <fw@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc] x86-64: Move LP_SIZE definition to its own header Date: Tue, 18 Oct 2022 15:36:26 +0000 (GMT) [thread overview] Message-ID: <20221018153627.BBFAD3858D32@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=246f37d6b1c4c6c0a6365df8783e62e3adf208e8 commit 246f37d6b1c4c6c0a6365df8783e62e3adf208e8 Author: Florian Weimer <fweimer@redhat.com> Date: Tue Oct 18 17:00:07 2022 +0200 x86-64: Move LP_SIZE definition to its own header This way, we can define the pointer guard macros without including <sysdep.h> on x86-64. Other architectures will not have such an inclusion dependency, and the implied header file inclusion would create a porting hazard. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Diff: --- sysdeps/x86_64/sysdep.h | 7 +------ sysdeps/x86_64/x32/sysdep.h | 6 +----- sysdeps/x86_64/x32/x86-lp_size.h | 23 +++++++++++++++++++++++ sysdeps/x86_64/x86-lp_size.h | 23 +++++++++++++++++++++++ 4 files changed, 48 insertions(+), 11 deletions(-) diff --git a/sysdeps/x86_64/sysdep.h b/sysdeps/x86_64/sysdep.h index 7f5defa4ec..d1a43dc14c 100644 --- a/sysdeps/x86_64/sysdep.h +++ b/sysdeps/x86_64/sysdep.h @@ -20,6 +20,7 @@ #define _X86_64_SYSDEP_H 1 #include <sysdeps/x86/sysdep.h> +#include <x86-lp_size.h> #ifdef __ASSEMBLER__ @@ -68,9 +69,6 @@ lose: \ # define JUMPTARGET(name) name #endif -/* Long and pointer size in bytes. */ -#define LP_SIZE 8 - /* Instruction to operate on long and pointer. */ #define LP_OP(insn) insn##q @@ -137,9 +135,6 @@ lose: \ #else /* __ASSEMBLER__ */ -/* Long and pointer size in bytes. */ -#define LP_SIZE "8" - /* Instruction to operate on long and pointer. */ #define LP_OP(insn) #insn "q" diff --git a/sysdeps/x86_64/x32/sysdep.h b/sysdeps/x86_64/x32/sysdep.h index 645ea4ae69..92d987780d 100644 --- a/sysdeps/x86_64/x32/sysdep.h +++ b/sysdeps/x86_64/x32/sysdep.h @@ -17,8 +17,8 @@ <https://www.gnu.org/licenses/>. */ #include <sysdeps/x86_64/sysdep.h> +#include <x86-lp_size.h> -#undef LP_SIZE #undef LP_OP #undef ASM_ADDR @@ -41,8 +41,6 @@ #ifdef __ASSEMBLER__ -# define LP_SIZE 4 - # define LP_OP(insn) insn##l # define ASM_ADDR .long @@ -66,8 +64,6 @@ #else /* __ASSEMBLER__ */ -# define LP_SIZE "4" - # define LP_OP(insn) #insn "l" # define ASM_ADDR ".long" diff --git a/sysdeps/x86_64/x32/x86-lp_size.h b/sysdeps/x86_64/x32/x86-lp_size.h new file mode 100644 index 0000000000..0b71e58be5 --- /dev/null +++ b/sysdeps/x86_64/x32/x86-lp_size.h @@ -0,0 +1,23 @@ +/* Pointer size definition for x86-64 x32. + Copyright (C) 2022 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/>. */ + +#ifdef __ASSEMBLER__ +# define LP_SIZE 4 +#else +# define LP_SIZE "4" +#endif diff --git a/sysdeps/x86_64/x86-lp_size.h b/sysdeps/x86_64/x86-lp_size.h new file mode 100644 index 0000000000..76877240e8 --- /dev/null +++ b/sysdeps/x86_64/x86-lp_size.h @@ -0,0 +1,23 @@ +/* Pointer size definition for x86-64. + Copyright (C) 2022 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/>. */ + +#ifdef __ASSEMBLER__ +# define LP_SIZE 8 +#else +# define LP_SIZE "8" +#endif
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