valgrind/valgrind-3.8.1-power-isa-205-deprecation.patch

commit 13b3c5c25500879aad0a682c6cced934def56e53
Author: carll <carll@a5019735-40e9-0310-863c-91ae7b9d1cf9>
Date:   Fri Aug 9 21:55:45 2013 +0000

    The following instructions were introduced in the Power ISA 2.05
    (i.e., POWER6) - lfdp - stfdp - lfdpx - stfdpx These instructions were promptly
    deprecated (phased out) in ISA 2.06 (i.e., POWER7). Recent updates in binutils
    no longer supports these instructions unless the assembler is invoked with
    '-mpower6'. When 'make check' is run on valgrind when using such a newer
    binutils and running on a ppc64 system newer than POWER6, you get the
    following build error:
    y
    pc64_linux=1 -DVGPV_ppc64_linux_vanilla=1 -DVGA_SEC_ppc32=1 -DVGP_SEC_ppc64_linux=1 -Winline -Wall -Wshadow -g -Winline -Wall -Wshadow -g -I../../../include -m64 -Wno-long-long -Wwrite-strings -fno-stack-protector -Wno-write-strings -MT power_ISA2_05-power_ISA2_05.o -MD -MP -MF .deps/power_ISA2_05-power_ISA2_05.Tpo -c -o power_ISA2_05-power_ISA2_05.o `test -f 'power_ISA2_05.c' || echo './'`power_ISA2_05.c
    /tmp/cciGIkGG.s:Assembler messages:
    /tmp/cciGIkGG.s:387: Error: operand out of domain (31 is not a multiple of 4)
    /tmp/cciGIkGG.s:387: Error: syntax error; found `,', expected `('
    /tmp/cciGIkGG.s:387: Error: junk at end of line: `,9'
    /tmp/cciGIkGG.s:478: Error: operand out of domain (31 is not a multiple of 4)
    /tmp/cciGIkGG.s:478: Error: syntax error; found `,', expected `('
    /tmp/cciGIkGG.s:478: Error: junk at end of line: `,9'
    make[2]: *** [power_ISA2_05-power_ISA2_05.o] Error 1
    make[2]: Leaving directory `/tmp/Valgrind_review/valgrind_ISA2_05/memcheck/tests/ppc64'
    make[1]: *** [check-am] Error 2
    make[1]: Leaving directory `/tmp/Valgrind_review/valgrind_ISA2_05/memcheck/tests/ppc64' make: *** [check-recursive] Error 1
    
    This patch fixes the problem by adding a configure check to determine if these
    phased out instructions are supported by the binutils, and the result of that
    configure check is used to decide whether or not to compile in the source for
    testing these instructions.
    
    Bugzilla 323116
    
    committed by Carl Love, carll@us.ibm.com
    
    git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13490 a5019735-40e9-0310-863c-91ae7b9d1cf9

diff --git a/configure.in b/configure.in
index 6ac32b0..5cf28a1 100644
--- a/configure.in
+++ b/configure.in
@@ -1771,6 +1771,28 @@ if test x$ac_have_as_ppc_mftocrf = xyes ; then
 fi
 
 
+# does the ppc assembler support "lfdp" and other phased out floating point insns?
+AC_MSG_CHECKING([if ppc32/64 asm supports phased out floating point instructions])
+
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
+  do { typedef struct {
+      double hi;
+      double lo;
+     } dbl_pair_t;
+     dbl_pair_t dbl_pair[3];
+     __asm__ volatile ("lfdp 10, %0"::"m" (dbl_pair[0]));
+   } while (0)
+]])], [
+ac_have_as_ppc_fpPO=yes
+AC_MSG_RESULT([yes])
+], [
+ac_have_as_ppc_fpPO=no
+AC_MSG_RESULT([no])
+])
+if test x$ac_have_as_ppc_fpPO = xyes ; then
+  AC_DEFINE(HAVE_AS_PPC_FPPO, 1, [Define to 1 if as supports floating point phased out category.])
+fi
+
 CFLAGS=$safe_CFLAGS
 
 # does the x86/amd64 assembler understand SSE3 instructions?
diff --git a/memcheck/tests/ppc32/Makefile.am b/memcheck/tests/ppc32/Makefile.am
index 40033fc..bd70eea 100644
--- a/memcheck/tests/ppc32/Makefile.am
+++ b/memcheck/tests/ppc32/Makefile.am
@@ -4,7 +4,8 @@ include $(top_srcdir)/Makefile.tool-tests.am
 dist_noinst_SCRIPTS = filter_stderr
 
 EXTRA_DIST = $(noinst_SCRIPTS) \
-	power_ISA2_05.stderr.exp power_ISA2_05.stdout.exp power_ISA2_05.vgtest
+	power_ISA2_05.stderr.exp power_ISA2_05.stdout.exp power_ISA2_05.vgtest \
+	power_ISA2_05.stdout.exp_Without_FPPO
 
 check_PROGRAMS = \
 	power_ISA2_05
diff --git a/memcheck/tests/ppc32/power_ISA2_05.c b/memcheck/tests/ppc32/power_ISA2_05.c
index 0178452..3736c27 100644
--- a/memcheck/tests/ppc32/power_ISA2_05.c
+++ b/memcheck/tests/ppc32/power_ISA2_05.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <config.h>
 
 double foo = -1.0;
 double FRT1;
@@ -65,9 +66,15 @@ void test_lfiwax()
 ** FPp	= leftmost 64 bits stored at DS(RA)
 ** FPp+1= rightmost 64 bits stored at DS(RA)
 ** FPp must be an even float register
+**
+** The [st|l]fdp[x] instructions were put into the "Floating-Point.Phased-Out"
+** category in ISA 2.06 (i.e., POWER7 timeframe).  If valgrind and its
+** testsuite are built with -mcpu=power7 (or later), then the assembler will
+** not recognize those phased out instructions.
 */
 void test_double_pair_instrs()
 {
+#ifdef HAVE_AS_PPC_FPPO
    typedef struct {
       double hi;
       double lo;
@@ -122,6 +129,7 @@ void test_double_pair_instrs()
    __asm__ volatile ("stfdpx 10, 20, 21");
    printf("stfdpx (%f, %f) => F_hi=%f, F_lo=%f\n",
           FRT1, FRT2, dbl_pair[2].hi, dbl_pair[2].lo);
+#endif
 }
 
 
diff --git a/memcheck/tests/ppc32/power_ISA2_05.stdout.exp_Without_FPPO b/memcheck/tests/ppc32/power_ISA2_05.stdout.exp_Without_FPPO
new file mode 120000
index 0000000..da5c109
--- /dev/null
+++ b/memcheck/tests/ppc32/power_ISA2_05.stdout.exp_Without_FPPO
@@ -0,0 +1 @@
+../ppc64/power_ISA2_05.stdout.exp_Without_FPPO
\ No newline at end of file
diff --git a/memcheck/tests/ppc64/Makefile.am b/memcheck/tests/ppc64/Makefile.am
index a18afd7..96eb576 100644
--- a/memcheck/tests/ppc64/Makefile.am
+++ b/memcheck/tests/ppc64/Makefile.am
@@ -4,7 +4,8 @@ include $(top_srcdir)/Makefile.tool-tests.am
 dist_noinst_SCRIPTS = filter_stderr
 
 EXTRA_DIST = $(noinst_SCRIPTS) \
-	power_ISA2_05.stderr.exp power_ISA2_05.stdout.exp power_ISA2_05.vgtest
+	power_ISA2_05.stderr.exp power_ISA2_05.stdout.exp power_ISA2_05.vgtest \
+	power_ISA2_05.stdout.exp_Without_FPPO
 
 check_PROGRAMS = \
 	power_ISA2_05
diff --git a/memcheck/tests/ppc64/power_ISA2_05.c b/memcheck/tests/ppc64/power_ISA2_05.c
index 8c0eab9..f552dc4 100644
--- a/memcheck/tests/ppc64/power_ISA2_05.c
+++ b/memcheck/tests/ppc64/power_ISA2_05.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <config.h>
 
 double foo = -1.0;
 double FRT1;
@@ -63,9 +64,16 @@ void test_lfiwax()
 ** FPp	= leftmost 64 bits stored at DS(RA)
 ** FPp+1= rightmost 64 bits stored at DS(RA)
 ** FPp must be an even float register
+**
+** The [st|l]fdp[x] instructions were put into the "Floating-Point.Phased-Out"
+** category in ISA 2.06 (i.e., POWER7 timeframe).  If valgrind and its
+** testsuite are built with -mcpu=power7 (or later), then the assembler will
+** not recognize those phased out instructions.
+**
 */
 void test_double_pair_instrs()
 {
+#ifdef HAVE_AS_PPC_FPPO
    typedef struct {
       double hi;
       double lo;
@@ -120,6 +128,7 @@ void test_double_pair_instrs()
    __asm__ volatile ("stfdpx 10, 20, 21");
    printf("stfdpx (%f, %f) => F_hi=%f, F_lo=%f\n",
           FRT1, FRT2, dbl_pair[2].hi, dbl_pair[2].lo);
+#endif
 }
 
 
diff --git a/memcheck/tests/ppc64/power_ISA2_05.stdout.exp_Without_FPPO b/memcheck/tests/ppc64/power_ISA2_05.stdout.exp_Without_FPPO
new file mode 100644
index 0000000..1945526
--- /dev/null
+++ b/memcheck/tests/ppc64/power_ISA2_05.stdout.exp_Without_FPPO
@@ -0,0 +1,119 @@
+lwarx => 0
+ldarx => bad0beef
+fcpsgn sign=10.101010, base=11.111111 => 11.111111
+fcpsgn sign=10.101010, base=-0.000000 => 0.000000
+fcpsgn sign=10.101010, base=0.000000 => 0.000000
+fcpsgn sign=10.101010, base=-11.111111 => 11.111111
+fcpsgn sign=-0.000000, base=11.111111 => -11.111111
+fcpsgn sign=-0.000000, base=-0.000000 => -0.000000
+fcpsgn sign=-0.000000, base=0.000000 => -0.000000
+fcpsgn sign=-0.000000, base=-11.111111 => -11.111111
+fcpsgn sign=0.000000, base=11.111111 => 11.111111
+fcpsgn sign=0.000000, base=-0.000000 => 0.000000
+fcpsgn sign=0.000000, base=0.000000 => 0.000000
+fcpsgn sign=0.000000, base=-11.111111 => 11.111111
+fcpsgn sign=-10.101010, base=11.111111 => -11.111111
+fcpsgn sign=-10.101010, base=-0.000000 => -0.000000
+fcpsgn sign=-10.101010, base=0.000000 => -0.000000
+fcpsgn sign=-10.101010, base=-11.111111 => -11.111111
+lfiwax (-1024.000000) => FRT=(ffffffff, c0900000)
+prtyd (0) => parity=0
+prtyw (0) => parity=0
+prtyd (1) => parity=1
+prtyw (1) => parity=1
+prtyd (2) => parity=0
+prtyw (2) => parity=0
+prtyd (3) => parity=1
+prtyw (3) => parity=1
+prtyd (4) => parity=0
+prtyw (4) => parity=0
+prtyd (5) => parity=1
+prtyw (5) => parity=1
+prtyd (6) => parity=0
+prtyw (6) => parity=0
+prtyd (7) => parity=1
+prtyw (7) => parity=1
+prtyd (8) => parity=0
+prtyw (8) => parity=0
+prtyd (9) => parity=1
+prtyw (9) => parity=1
+prtyd (a) => parity=0
+prtyw (a) => parity=0
+prtyd (b) => parity=1
+prtyw (b) => parity=1
+prtyd (c) => parity=0
+prtyw (c) => parity=0
+prtyd (d) => parity=1
+prtyw (d) => parity=1
+prtyd (e) => parity=0
+prtyw (e) => parity=0
+prtyd (f) => parity=1
+prtyw (f) => parity=1
+prtyd (10) => parity=0
+prtyw (10) => parity=0
+prtyd (11) => parity=1
+prtyw (11) => parity=1
+prtyd (12) => parity=0
+prtyw (12) => parity=0
+prtyd (13) => parity=1
+prtyw (13) => parity=1
+prtyd (14) => parity=0
+prtyw (14) => parity=0
+prtyd (15) => parity=1
+prtyw (15) => parity=1
+prtyd (16) => parity=0
+prtyw (16) => parity=0
+prtyd (17) => parity=1
+prtyw (17) => parity=1
+prtyd (18) => parity=0
+prtyw (18) => parity=0
+prtyd (19) => parity=1
+prtyw (19) => parity=1
+prtyd (1a) => parity=0
+prtyw (1a) => parity=0
+prtyd (1b) => parity=1
+prtyw (1b) => parity=1
+prtyd (1c) => parity=0
+prtyw (1c) => parity=0
+prtyd (1d) => parity=1
+prtyw (1d) => parity=1
+prtyd (1e) => parity=0
+prtyw (1e) => parity=0
+prtyd (1f) => parity=1
+prtyw (1f) => parity=1
+prtyd (20) => parity=0
+prtyw (20) => parity=0
+prtyd (21) => parity=1
+prtyw (21) => parity=1
+prtyd (22) => parity=0
+prtyw (22) => parity=0
+prtyd (23) => parity=1
+prtyw (23) => parity=1
+prtyd (24) => parity=0
+prtyw (24) => parity=0
+prtyd (25) => parity=1
+prtyw (25) => parity=1
+prtyd (26) => parity=0
+prtyw (26) => parity=0
+prtyd (27) => parity=1
+prtyw (27) => parity=1
+prtyd (28) => parity=0
+prtyw (28) => parity=0
+prtyd (29) => parity=1
+prtyw (29) => parity=1
+prtyd (2a) => parity=0
+prtyw (2a) => parity=0
+prtyd (2b) => parity=1
+prtyw (2b) => parity=1
+prtyd (2c) => parity=0
+prtyw (2c) => parity=0
+prtyd (2d) => parity=1
+prtyw (2d) => parity=1
+prtyd (2e) => parity=0
+prtyw (2e) => parity=0
+prtyd (2f) => parity=1
+prtyw (2f) => parity=1
+prtyd (30) => parity=0
+prtyw (30) => parity=0
+prtyd (31) => parity=1
+prtyw (31) => parity=1
diff -ur valgrind-3.8.1.orig/config.h.in valgrind-3.8.1/config.h.in
--- valgrind-3.8.1.orig/config.h.in	2013-08-14 17:58:25.970210332 +0200
+++ valgrind-3.8.1/config.h.in	2013-08-14 17:59:26.000000000 +0200
@@ -81,6 +81,9 @@
 /* Define to 1 if you have the <asm/unistd.h> header file. */
 #undef HAVE_ASM_UNISTD_H
 
+/* Define to 1 if as supports floating point phased out category. */
+#undef HAVE_AS_PPC_FPPO
+
 /* Define to 1 if as supports mtocrf/mfocrf. */
 #undef HAVE_AS_PPC_MFTOCRF
 
Only in valgrind-3.8.1: config.h.in~
diff -ur valgrind-3.8.1.orig/configure valgrind-3.8.1/configure
--- valgrind-3.8.1.orig/configure	2013-08-14 17:58:25.970210332 +0200
+++ valgrind-3.8.1/configure	2013-08-14 17:59:32.537941678 +0200
@@ -8134,6 +8134,49 @@
 fi
 
 
+# does the ppc assembler support "lfdp" and other phased out floating point insns?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if ppc32/64 asm supports phased out floating point instructions" >&5
+$as_echo_n "checking if ppc32/64 asm supports phased out floating point instructions... " >&6; }
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  do { typedef struct {
+      double hi;
+      double lo;
+     } dbl_pair_t;
+     dbl_pair_t dbl_pair[3];
+     __asm__ volatile ("lfdp 10, %0"::"m" (dbl_pair[0]));
+   } while (0)
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ac_have_as_ppc_fpPO=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+
+else
+
+ac_have_as_ppc_fpPO=no
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+if test x$ac_have_as_ppc_fpPO = xyes ; then
+
+$as_echo "#define HAVE_AS_PPC_FPPO 1" >>confdefs.h
+
+fi
+
 CFLAGS=$safe_CFLAGS
 
 # does the x86/amd64 assembler understand SSE3 instructions?
diff -ur valgrind-3.8.1.orig/memcheck/tests/ppc32/Makefile.in valgrind-3.8.1/memcheck/tests/ppc32/Makefile.in
--- valgrind-3.8.1.orig/memcheck/tests/ppc32/Makefile.in	2013-08-14 17:58:25.794211043 +0200
+++ valgrind-3.8.1/memcheck/tests/ppc32/Makefile.in	2013-08-14 17:59:30.729948971 +0200
@@ -362,7 +362,8 @@
 @VGCONF_OS_IS_DARWIN_TRUE@noinst_DSYMS = $(check_PROGRAMS)
 dist_noinst_SCRIPTS = filter_stderr
 EXTRA_DIST = $(noinst_SCRIPTS) \
-	power_ISA2_05.stderr.exp power_ISA2_05.stdout.exp power_ISA2_05.vgtest
+	power_ISA2_05.stderr.exp power_ISA2_05.stdout.exp power_ISA2_05.vgtest \
+	power_ISA2_05.stdout.exp_Without_FPPO
 
 power_ISA2_05_CFLAGS = $(AM_CFLAGS) $(WERROR) -Winline -Wall -Wshadow -g \
 		-I$(top_srcdir)/include @FLAG_M32@
diff -ur valgrind-3.8.1.orig/memcheck/tests/ppc64/Makefile.in valgrind-3.8.1/memcheck/tests/ppc64/Makefile.in
--- valgrind-3.8.1.orig/memcheck/tests/ppc64/Makefile.in	2013-08-14 17:58:25.789211063 +0200
+++ valgrind-3.8.1/memcheck/tests/ppc64/Makefile.in	2013-08-14 17:59:30.785948745 +0200
@@ -362,7 +362,8 @@
 @VGCONF_OS_IS_DARWIN_TRUE@noinst_DSYMS = $(check_PROGRAMS)
 dist_noinst_SCRIPTS = filter_stderr
 EXTRA_DIST = $(noinst_SCRIPTS) \
-	power_ISA2_05.stderr.exp power_ISA2_05.stdout.exp power_ISA2_05.vgtest
+	power_ISA2_05.stderr.exp power_ISA2_05.stdout.exp power_ISA2_05.vgtest \
+	power_ISA2_05.stdout.exp_Without_FPPO
 
 power_ISA2_05_CFLAGS = $(AM_CFLAGS) $(WERROR) -Winline -Wall -Wshadow -g \
 		-I$(top_srcdir)/include @FLAG_M64@
commit 5d0d52118210671d3eeff94fd3f5cc3807bd2a44
Author: sewardj <sewardj@a5019735-40e9-0310-863c-91ae7b9d1cf9>
Date:   Tue Jan 29 22:14:01 2013 +0000

    test_reservation(), test_double_pair_instrs(): Fix broken inline assembly
    causing segfaults with gcc-4.7.  The inline assembly still isn't right,
    but it's better than it was before.
    
    
    
    git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13279 a5019735-40e9-0310-863c-91ae7b9d1cf9

diff --git a/memcheck/tests/ppc32/power_ISA2_05.c b/memcheck/tests/ppc32/power_ISA2_05.c
index a95f427..0178452 100644
--- a/memcheck/tests/ppc32/power_ISA2_05.c
+++ b/memcheck/tests/ppc32/power_ISA2_05.c
@@ -103,8 +103,8 @@ void test_double_pair_instrs()
    FRT2 = -1.0;
    base = (unsigned long) &dbl_pair;
    offset = (unsigned long) &dbl_pair[1] - base;
-   __asm__ volatile ("or 20, 0, %0"::"r" (base));
-   __asm__ volatile ("or 21, 0, %0"::"r" (offset));
+   __asm__ volatile ("ori 20, %0, 0"::"r" (base));
+   __asm__ volatile ("ori 21, %0, 0"::"r" (offset));
    __asm__ volatile ("lfdpx 10, 20, 21");
    __asm__ volatile ("fmr %0, 10":"=f" (FRT1));
    __asm__ volatile ("fmr %0, 11":"=f" (FRT2));
@@ -115,8 +115,8 @@ void test_double_pair_instrs()
    FRT2 = -16.1024;
    base = (unsigned long) &dbl_pair;
    offset = (unsigned long) &dbl_pair[2] - base;
-   __asm__ volatile ("or 20, 0, %0"::"r" (base));
-   __asm__ volatile ("or 21, 0, %0"::"r" (offset));
+   __asm__ volatile ("ori 20, %0, 0"::"r" (base));
+   __asm__ volatile ("ori 21, %0, 0"::"r" (offset));
    __asm__ volatile ("fmr %0, 10":"=f" (FRT1));
    __asm__ volatile ("fmr %0, 11":"=f" (FRT2));
    __asm__ volatile ("stfdpx 10, 20, 21");
@@ -168,14 +168,14 @@ void test_reservation()
 
    base = (unsigned long) &arr;
    offset = (unsigned long) &arr[1] - base;
-   __asm__ volatile ("or 20, 0, %0"::"r" (base));
-   __asm__ volatile ("or 21, 0, %0"::"r" (offset));
+   __asm__ volatile ("ori 20, %0, 0"::"r" (base));
+   __asm__ volatile ("ori 21, %0, 0"::"r" (offset));
    __asm__ volatile ("lwarx %0, 20, 21, 1":"=r" (RT));
    printf("lwarx => %x\n", RT);
 
 #ifdef __powerpc64__
    offset = (unsigned long) &arr[1] - base;
-   __asm__ volatile ("or 21, 0, %0"::"r" (offset));
+   __asm__ volatile ("ori 21, %0, 0"::"r" (offset));
    __asm__ volatile ("ldarx %0, 20, 21, 1":"=r" (RT));
    printf("ldarx => %x\n", RT);
 #endif
diff --git a/memcheck/tests/ppc64/power_ISA2_05.c b/memcheck/tests/ppc64/power_ISA2_05.c
index dcf0e7a..8c0eab9 100644
--- a/memcheck/tests/ppc64/power_ISA2_05.c
+++ b/memcheck/tests/ppc64/power_ISA2_05.c
@@ -101,8 +101,8 @@ void test_double_pair_instrs()
    FRT2 = -1.0;
    base = (unsigned long) &dbl_pair;
    offset = (unsigned long) &dbl_pair[1] - base;
-   __asm__ volatile ("or 20, 0, %0"::"r" (base));
-   __asm__ volatile ("or 21, 0, %0"::"r" (offset));
+   __asm__ volatile ("ori 20, %0, 0"::"r" (base));
+   __asm__ volatile ("ori 21, %0, 0"::"r" (offset));
    __asm__ volatile ("lfdpx 10, 20, 21");
    __asm__ volatile ("fmr %0, 10":"=f" (FRT1));
    __asm__ volatile ("fmr %0, 11":"=f" (FRT2));
@@ -113,8 +113,8 @@ void test_double_pair_instrs()
    FRT2 = -16.1024;
    base = (unsigned long) &dbl_pair;
    offset = (unsigned long) &dbl_pair[2] - base;
-   __asm__ volatile ("or 20, 0, %0"::"r" (base));
-   __asm__ volatile ("or 21, 0, %0"::"r" (offset));
+   __asm__ volatile ("ori 20, %0, 0"::"r" (base));
+   __asm__ volatile ("ori 21, %0, 0"::"r" (offset));
    __asm__ volatile ("fmr %0, 10":"=f" (FRT1));
    __asm__ volatile ("fmr %0, 11":"=f" (FRT2));
    __asm__ volatile ("stfdpx 10, 20, 21");
@@ -166,14 +166,14 @@ void test_reservation()
 
    base = (unsigned long) &arr;
    offset = (unsigned long) &arr[1] - base;
-   __asm__ volatile ("or 20, 0, %0"::"r" (base));
-   __asm__ volatile ("or 21, 0, %0"::"r" (offset));
+   __asm__ volatile ("ori 20, %0, 0"::"r" (base));
+   __asm__ volatile ("ori 21, %0, 0"::"r" (offset));
    __asm__ volatile ("lwarx %0, 20, 21, 1":"=r" (RT));
    printf("lwarx => %x\n", RT);
 
 #ifdef __powerpc64__
    offset = (unsigned long) &arr[1] - base;
-   __asm__ volatile ("or 21, 0, %0"::"r" (offset));
+   __asm__ volatile ("ori 21, %0, 0"::"r" (offset));
    __asm__ volatile ("ldarx %0, 20, 21, 1":"=r" (RT));
    printf("ldarx => %x\n", RT);
 #endif