[patch] Use direct GOT offsets instead of _rtld_global_ro for PIE builds

glibc-2.3.6-r3-PIE-amd64.patch (text/plain), 6.05 KB, created by Kevin F. Quinn (RETIRED) on 2006-03-03 13:18:52 UTC

--- sysdeps/x86_64/memcmp.S.orig	2006-03-03 22:04:26.000000000 +0100
+++ sysdeps/x86_64/memcmp.S	2006-03-03 22:16:07.000000000 +0100
@@ -7,9 +7,11 @@
 # INCLUDED WITH THIS FILE
 
 #include "sysdep.h"
-#include <rtld-global-offsets.h>
+#if defined PIC && !defined SHARED
+# include <rtld-global-offsets.h>
+#endif
 
-#ifdef PIC
+#if defined PIC && !defined SHARED
 	.globl _rtld_local_ro
         .hidden _rtld_local_ro
         .set    _rtld_local_ro,_rtld_global_ro
@@ -130,8 +132,13 @@
 L(memcmp32after):
 
 #ifdef PIC
+# ifdef SHARED
         mov     _rtld_local_ro@GOTPCREL(%rip), %r8
 	mov	RTLD_GLOBAL_DL_CACHE1SIZEHALF(%r8), %r9
+# else
+        mov     _dl_cache1sizehalf@GOTPCREL(%rip), %r8
+	mov	(%r8), %r9
+# endif
 #else
         mov     _dl_cache1sizehalf, %r9
 #endif
@@ -170,8 +177,13 @@
 
 L(memcmp64try):
 #ifdef PIC
+# ifdef SHARED
         mov     _rtld_local_ro@GOTPCREL(%rip), %r8
 	mov	RTLD_GLOBAL_DL_CACHE1SIZEHALF(%r8), %rcx
+# else
+        mov     _dl_cache1sizehalf@GOTPCREL(%rip), %r8
+	mov	(%r8), %rcx
+# endif
 #else
         mov     _dl_cache1sizehalf, %rcx
 #endif
@@ -242,8 +254,13 @@
 
 L(memcmppre):                              # 64-byte prefetching
 #ifdef PIC
+# ifdef SHARED
         mov     _rtld_local_ro@GOTPCREL(%rip), %r8
 	mov	RTLD_GLOBAL_DL_CACHE2SIZEHALF(%r8), %rcx
+# else
+        mov     _dl_cache2sizehalf@GOTPCREL(%rip), %r8
+	mov	(%r8), %rcx
+# endif
 #else
         mov     _dl_cache2sizehalf, %rcx
 #endif
--- sysdeps/x86_64/memcpy.S.orig	2006-03-03 22:07:50.000000000 +0100
+++ sysdeps/x86_64/memcpy.S	2006-03-03 22:12:41.000000000 +0100
@@ -8,7 +8,9 @@
 #include "asm-syntax.h"
 #include "bp-sym.h"
 #include "bp-asm.h"
-#include <rtld-global-offsets.h>
+#if defined(PIC) && !defined(SHARED)
+# include <rtld-global-offsets.h>
+#endif
 
 /* BEWARE: `#ifdef memcpy' means that memcpy is redefined as `mempcpy',
    and the return value is the byte after the last one copied in
@@ -20,7 +22,7 @@
 #endif
 
 
-#ifdef PIC
+#if defined PIC  && !defined SHARED
 	.globl _rtld_local_ro
         .hidden _rtld_local_ro
         .set    _rtld_local_ro,_rtld_global_ro
@@ -187,8 +189,13 @@
 
 LABEL(32after):
 #ifdef PIC
+# ifdef SHARED
 	mov     _rtld_local_ro@GOTPCREL(%rip), %r8
 	mov     RTLD_GLOBAL_DL_CACHE1SIZE(%r8), %r9
+# else
+	mov     _dl_cache1size@GOTPCREL(%rip), %r8
+	mov     (%r8), %r9
+# endif
 #else
 	mov     _dl_cache1size, %r9
 #endif
@@ -223,8 +230,13 @@
 
 LABEL(fasttry):
 #ifdef PIC
+# ifdef SHARED
 	mov     _rtld_local_ro@GOTPCREL(%rip), %r9
 	mov     RTLD_GLOBAL_DL_CACHE1SIZEHALF(%r9), %r11
+# else
+	mov     _dl_cache1sizehalf@GOTPCREL(%rip), %r9
+	mov     (%r9), %r11
+# endif
 #else
 	mov     _dl_cache1sizehalf, %r11
 #endif
@@ -336,8 +348,13 @@
 
 LABEL(pretry):
 #ifdef PIC
+# ifdef SHARED
 	mov     _rtld_local_ro@GOTPCREL(%rip), %r11
 	mov     RTLD_GLOBAL_DL_CACHE2SIZEHALF(%r11), %r8
+# else
+	mov     _dl_cache2sizehalf@GOTPCREL(%rip), %r11
+	mov     (%r11), %r8
+# endif
 #else
 	mov     _dl_cache2sizehalf, %r8
 #endif
--- sysdeps/x86_64/memset.S.orig	2006-03-03 22:16:16.000000000 +0100
+++ sysdeps/x86_64/memset.S	2006-03-03 22:18:06.000000000 +0100
@@ -9,12 +9,14 @@
 #include "asm-syntax.h"
 #include "bp-sym.h"
 #include "bp-asm.h"
-#include <rtld-global-offsets.h>
+#if defined PIC && !defined SHARED
+# include <rtld-global-offsets.h>
+#endif
 
 /* BEWARE: `#ifdef memset' means that memset is redefined as `bzero' */
 #define BZERO_P (defined memset)
 
-#ifdef PIC
+#if defined PIC && !defined SHARED
 	.globl _rtld_local_ro
         .hidden _rtld_local_ro
         .set    _rtld_local_ro,_rtld_global_ro
@@ -151,8 +153,13 @@
 LABEL(32after):
 
 #ifdef PIC
+# ifdef SHARED
 	mov     _rtld_local_ro@GOTPCREL(%rip), %r8
 	mov     RTLD_GLOBAL_DL_CACHE1SIZEHALF(%r8), %r9
+# else
+	mov     _dl_cache1sizehalf@GOTPCREL(%rip), %r8
+	mov     (%r8), %r9
+# endif
 #else
 	mov     _dl_cache1sizehalf, %r9
 #endif
@@ -182,8 +189,13 @@
 
 LABEL(alignafter):
 #ifdef PIC
+# ifdef SHARED
         mov     _rtld_local_ro@GOTPCREL(%rip), %r9
 	mov	RTLD_GLOBAL_DL_CACHE2SIZEHALF(%r9), %r8
+# else
+        mov     _dl_cache2sizehalf@GOTPCREL(%rip), %r9
+	mov	(%r9), %r8
+# endif
 	# For MP System half cache size is better, for UP full cache size
 	# is better -> use half cache size only
 #else
--- sysdeps/x86_64/strcpy.S.orig	2006-03-03 22:18:33.000000000 +0100
+++ sysdeps/x86_64/strcpy.S	2006-03-03 22:19:47.000000000 +0100
@@ -7,10 +7,12 @@
 # INCLUDED WITH THIS FILE
 
 #include "sysdep.h"
-#include <rtld-global-offsets.h>
+#if defined PIC && !defined SHARED
+# include <rtld-global-offsets.h>
+#endif
 
 	/* XXX:	strncpy is broken, just use this for strcpy for now.  */
-#ifdef PIC
+#if defined PIC && !defined SHARED
 	.globl _rtld_local_ro
         .hidden _rtld_local_ro
         .set    _rtld_local_ro,_rtld_global_ro
@@ -216,8 +218,13 @@
 
 LABEL(64try):
 #ifdef PIC
+# ifdef SHARED
         mov     _rtld_local_ro@GOTPCREL(%rip), %r8
 	mov	RTLD_GLOBAL_DL_CACHE1SIZEHALF(%r8), %r9
+# else
+        mov     _dl_cache1sizehalf@GOTPCREL(%rip), %r8
+	mov	(%r8), %r9
+# endif
 #else
         mov     _dl_cache1sizehalf, %r9
 #endif
@@ -380,8 +387,13 @@
 
 LABEL(pretry):
 #ifdef PIC
+# ifdef SHARED
 	mov     _rtld_local_ro@GOTPCREL(%rip), %r8
 	mov	RTLD_GLOBAL_DL_CACHE2SIZEHALF(%r8), %r9
+# else
+	mov     _dl_cache2sizehalf@GOTPCREL(%rip), %r8
+	mov	(%r8), %r9
+# endif
 #else
         mov     _dl_cache2sizehalf, %r9
 #endif
--- sysdeps/x86_64/strlen.S.orig	2006-03-03 22:19:54.000000000 +0100
+++ sysdeps/x86_64/strlen.S	2006-03-03 22:20:44.000000000 +0100
@@ -7,9 +7,11 @@
 # INCLUDED WITH THIS FILE
 
 #include "sysdep.h"
-#include <rtld-global-offsets.h>
+#if defined PIC && !defined SHARED
+# include <rtld-global-offsets.h>
+#endif
 
-#ifdef PIC
+#if defined PIC && !defined SHARED
 	.globl _rtld_local_ro
         .hidden _rtld_local_ro
         .set    _rtld_local_ro,_rtld_global_ro
@@ -141,8 +143,13 @@
 #       mov     (%rsi), %rax
 
 #ifdef PIC
+# ifdef SHARED
         mov     _rtld_local_ro@GOTPCREL(%rip), %r8
 	mov	RTLD_GLOBAL_DL_CACHE1SIZE(%r8), %r9
+# else
+        mov     _dl_cache1size@GOTPCREL(%rip), %r8
+	mov	(%r8), %r9
+# endif
 #else
         mov     _dl_cache1size, %r9
 #endif