From: Ulrich Drepper <drepper@redhat.com>
Date: Sun, 18 Dec 2005 16:59:55 +0000 (+0000)
Subject: * sysdeps/unix/sysv/linux/i386/sysdep.h: Define PTR_MANGLE and
X-Git-Tag: upstream/2.20~9115
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3467f5c369a10ef19c8df38fb282c7763f36d66f;p=platform%2Fupstream%2Flinaro-glibc.git

* sysdeps/unix/sysv/linux/i386/sysdep.h: Define PTR_MANGLE and

	PTR_DEMANGLE for C code in libc.
	* sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
---

diff --git a/ChangeLog b/ChangeLog
index e992f38..70b6515 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2005-12-18  Ulrich Drepper  <drepper@redhat.com>
+
+	* sysdeps/unix/sysv/linux/i386/sysdep.h: Define PTR_MANGLE and
+	PTR_DEMANGLE for C code in libc.
+	* sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
+
 2005-12-17  Ulrich Drepper  <drepper@redhat.com>
 
 	* elf/Versions [GLIBC_PRIVATE]: Export __pointer_chk_guard if defined.
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h
index 929c6e5..cb57679 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
@@ -565,8 +565,17 @@ asm (".L__X'%ebx = 1\n\t"
    earlier than the descriptor is initialized.  Using a global variable
    is too complicated here since we have no PC-relative addressing mode.  */
 #else
-# define PTR_MANGLE(reg)	xorl %gs:POINTER_GUARD, reg
-# define PTR_DEMANGLE(reg)	PTR_MANGLE (reg)
+# ifdef __ASSEMBLER__
+#  define PTR_MANGLE(reg)	xorl %gs:POINTER_GUARD, reg
+#  define PTR_DEMANGLE(reg)	PTR_MANGLE (reg)
+# else
+#  define PTR_MANGLE(var)	asm ("xorl %%gs:%c2, %0"		      \
+				     : "=r" (var)			      \
+				     : "0" (var),			      \
+				       "i" (offsetof (tcbhead_t,	      \
+						      pointer_guard)))
+#  define PTR_DEMANGLE(var)	PTR_MANGLE (var)
+# endif
 #endif
 
 #endif /* linux/i386/sysdep.h */
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
index 2ea69c3..bb0b604 100644
--- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
@@ -316,11 +316,24 @@
 #if defined NOT_IN_libc && defined IS_IN_rtld
 /* We cannot use the thread descriptor because in ld.so we use setjmp
    earlier than the descriptor is initialized.  */
-# define PTR_MANGLE(reg)	xorq __pointer_chk_guard_local(%rip), reg
-# define PTR_DEMANGLE(reg)	PTR_MANGLE (reg)
+# ifdef __ASSEMBLER__
+#  define PTR_MANGLE(reg)	xorq __pointer_chk_guard_local(%rip), reg
+#  define PTR_DEMANGLE(reg)	PTR_MANGLE (reg)
+# else
+#  error "Define these if necessary"
+# endif
 #else
-# define PTR_MANGLE(reg)	xorq %fs:POINTER_GUARD, reg
-# define PTR_DEMANGLE(reg)	PTR_MANGLE (reg)
+# ifdef __ASSEMBLER__
+#  define PTR_MANGLE(reg)	xorq %fs:POINTER_GUARD, reg
+#  define PTR_DEMANGLE(reg)	PTR_MANGLE (reg)
+# else
+#  define PTR_MANGLE(var)	asm ("xorq %%fs:%c2, %0"		      \
+				     : "=r" (var)			      \
+				     : "0" (var),			      \
+				       "i" (offsetof (tcbhead_t,	      \
+						      pointer_guard)))
+#  define PTR_DEMANGLE(var)	PTR_MANGLE (var)
+# endif
 #endif
 
 #endif /* linux/x86_64/sysdep.h */