[glibc] x86-64: Move LP_SIZE definition to its own header

[glibc] x86-64: Move LP_SIZE definition to its own header

[Florian Weimer]

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