Merge commit 'origin/master' into fedora/master

6 files changed, 72 insertions, 40 deletions

diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 57cd88432a..e8d0285e26 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -22,6 +22,7 @@ sysdep-rtld-routines += tlsdesc dl-tlsdesc
 
 tests: $(objpfx)tst-xmmymm.out
 $(objpfx)tst-xmmymm.out: ../sysdeps/x86_64/tst-xmmymm.sh $(objpfx)ld.so
+	@echo "Checking ld.so for SSE register use.  This will take a few seconds..."
 	$(SHELL) -e $< $(objpfx) > $@
 endif
 
diff --git a/sysdeps/x86_64/multiarch/rtld-rawmemchr.c b/sysdeps/x86_64/multiarch/rtld-rawmemchr.c
deleted file mode 100644
index 53a90675ab..0000000000
--- a/sysdeps/x86_64/multiarch/rtld-rawmemchr.c
+++ /dev/null
@@ -1 +0,0 @@
-#include "../rtld-rawmemchr.c"
diff --git a/sysdeps/x86_64/rtld-memchr.c b/sysdeps/x86_64/rtld-memchr.c
deleted file mode 100644
index f63fefbcec..0000000000
--- a/sysdeps/x86_64/rtld-memchr.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <string/memchr.c>
diff --git a/sysdeps/x86_64/rtld-rawmemchr.c b/sysdeps/x86_64/rtld-rawmemchr.c
deleted file mode 100644
index 2b9189393c..0000000000
--- a/sysdeps/x86_64/rtld-rawmemchr.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <string/rawmemchr.c>
diff --git a/sysdeps/x86_64/rtld-strcmp.S b/sysdeps/x86_64/rtld-strcmp.S
deleted file mode 100644
index a25535c161..0000000000
--- a/sysdeps/x86_64/rtld-strcmp.S
+++ /dev/null
@@ -1,28 +0,0 @@
-#include <sysdep.h>
-#include "asm-syntax.h"
-#include "bp-sym.h"
-#include "bp-asm.h"
-
-#ifndef LABEL
-#define LABEL(l) L(l)
-#endif
-
-	.text
-ENTRY (BP_SYM (STRCMP))
-/* Simple version since we can't use SSE registers in ld.so.  */
-L(oop):	movb	(%rdi), %al
-	cmpb	(%rsi), %al
-	jne	L(neq)
-	incq	%rdi
-	incq	%rsi
-	testb	%al, %al
-	jnz	L(oop)
-
-	xorl	%eax, %eax
-	ret
-
-L(neq):	movl	$1, %eax
-	movl	$-1, %ecx
-	cmovbl	%ecx, %eax
-	ret
-END (BP_SYM (STRCMP))
diff --git a/sysdeps/x86_64/tst-xmmymm.sh b/sysdeps/x86_64/tst-xmmymm.sh
index 0735276e6d..a576e7da0d 100755
--- a/sysdeps/x86_64/tst-xmmymm.sh
+++ b/sysdeps/x86_64/tst-xmmymm.sh
@@ -1,17 +1,79 @@
-#! /bin/sh
+#! /bin/bash
 objpfx="$1"
 
 tmp=$(mktemp ${objpfx}tst-xmmymm.XXXXXX)
 trap 'rm -f "$tmp"' 1 2 3 15
 
-objdump -d "${objpfx}ld.so" |
-awk 'BEGIN { last="" } /^[[:xdigit:]]* <[_[:alnum:]]*>:$/ { fct=substr($2, 2, length($2)-3) } /,%[xy]mm[[:digit:]]*$/ { if (last != fct) { print fct; last=fct} }' |
-tee "$tmp"
+# List of object files we have to test
+rtldobjs=$(readelf -W -wi ${objpfx}dl-allobjs.os |
+    awk '/^ </ { if ($5 == "(DW_TAG_compile_unit)") c=1; else c=0 } $2 == "DW_AT_name" { if (c == 1) print $NF }' |
+    sed 's,\(.*/\|\)\([_[:alnum:]-]*[.]\).$,\2os,')
+rtldobjs="$rtldobjs $(ar t ${objpfx}rtld-libc.a)"
 
-echo "Functions which incorrectly modify xmm/ymm registers:"
-err=1
-egrep -vs '^_dl_runtime_profile$' "$tmp" || err=0
-if test $err -eq 0; then echo "None"; fi
+# OBJECT symbols can be ignored.
+readelf -sW ${objpfx}dl-allobjs.os ${objpfx}rtld-libc.a |
+egrep " OBJECT  *GLOBAL " |
+awk '{if ($7 != "ABS") print $8 }' |
+sort -u > "$tmp"
+declare -a objects
+objects=($(cat "$tmp"))
+
+objs="dl-runtime.os"
+tocheck="dl-runtime.os"
+
+while test -n "$objs"; do
+  this="$objs"
+  objs=""
+
+  for f in $this; do
+    undef=$(nm -u "$objpfx"../*/"$f" | awk '{print $2}')
+    if test -n "$undef"; then
+      for s in $undef; do
+	for obj in ${objects[*]} "_GLOBAL_OFFSET_TABLE_"; do
+	  if test "$obj" = "$s"; then
+	    continue 2
+	  fi
+	done
+        for o in $rtldobjs; do
+	  ro=$(echo "$objpfx"../*/"$o")
+	  if nm -g --defined-only "$ro" | egrep -qs " $s\$"; then
+	    if ! (echo "$tocheck $objs" | fgrep -qs "$o"); then
+	      echo "$o needed for $s"
+	      objs="$objs $o"
+	    fi
+	    break;
+	  fi
+	done
+      done
+    fi
+  done
+  tocheck="$tocheck$objs"
+done
+
+echo
+echo
+echo "object files needed: $tocheck"
+
+cp /dev/null "$tmp"
+for f in $tocheck; do
+  objdump -d "$objpfx"../*/"$f" |
+  awk 'BEGIN { last="" } /^[[:xdigit:]]* <[_[:alnum:]]*>:$/ { fct=substr($2, 2, length($2)-3) } /,%[xy]mm[[:digit:]]*$/ { if (last != fct) { print fct; last=fct} }' |
+  while read fct; do
+    if test "$fct" != "_dl_runtime_profile"; then
+      echo "function $fct in $f modifies xmm/ymm" >> "$tmp"
+      result=1
+    fi
+  done
+done
+
+if test -s "$tmp"; then
+  echo
+  echo
+  cat "$tmp"
+  result=1
+else
+  result=0
+fi
 
 rm "$tmp"
-exit $err
+exit $result