Fix dtc bugs for 64-bit compile
I've just tested building dtc as an x86_64 binary on a 32-bit i386
host by using:
make CC="gcc -m64"
This patch fixes a handful of minor bugs thus discovered:
* There is a printf() type mismatch on 64-bit in value-labels.c
* For the tests which use libdl, we were using the GNU make feature
where it will find libdl.so given a dependency in the form '-ldl'.
But this built-in make logic doesn't know we're compiling 64-bit so
finds the 32-bit version of the library. We avoid using this and
instead explicitly pass -ldl to CC, which being the 64-bit version
does know where to look.
* To process dtc's asm output into .so files, run_tests.sh was
directly invoking the (default instance of) the assembler and linker.
Instead invoke these via the CC driver, and allow that to be overriden
from the make environment.
* The x86_64 assembler doesn't 0 fill with the .balign directive
(presumably it is NOP filling). That doesn't produce strictly
incorrect trees, but it is confusing and confounds are testcases which
do byte-by-byte comparison of the trees produced by asm output with
direct dtb output (which does 0 pad where necessary, of course). This
patch uses the optional second argument to .balign to force gas to
zero-fill instead.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
diff --git a/flattree.c b/flattree.c
index 0ff8c45..3eb0201 100644
--- a/flattree.c
+++ b/flattree.c
@@ -166,7 +166,7 @@
{
FILE *f = e;
- fprintf(f, "\t.balign\t%d\n", a);
+ fprintf(f, "\t.balign\t%d, 0\n", a);
}
static void asm_emit_data(void *e, struct data d)
diff --git a/tests/Makefile.tests b/tests/Makefile.tests
index e35afa6..2696581 100644
--- a/tests/Makefile.tests
+++ b/tests/Makefile.tests
@@ -41,7 +41,9 @@
$(LIB_TESTS): %: $(TESTS_PREFIX)testutils.o $(LIBFDT_archive)
-$(DL_LIB_TESTS): %: $(TESTS_PREFIX)testutils.o $(LIBFDT_archive) -ldl
+$(DL_LIB_TESTS): %: %.o $(TESTS_PREFIX)testutils.o $(LIBFDT_archive)
+ @$(VECHO) LD [libdl] $@
+ $(LINK.c) -o $@ $^ -ldl
$(LIBTREE_TESTS): %: $(TESTS_PREFIX)testutils.o $(TESTS_PREFIX)trees.o $(LIBFDT_archive)
diff --git a/tests/run_tests.sh b/tests/run_tests.sh
index db413a1..5d901c2 100755
--- a/tests/run_tests.sh
+++ b/tests/run_tests.sh
@@ -2,6 +2,10 @@
. ./tests.sh
+if [ -z "$CC" ]; then
+ CC=gcc
+fi
+
export QUIET_TEST=1
export VALGRIND=
@@ -72,8 +76,7 @@
}
asm_to_so () {
- as -o $1.test.o data.S $1.test.s && \
- ld -shared -o $1.test.so $1.test.o
+ $CC -shared -o $1.test.so data.S $1.test.s
}
asm_to_so_test () {
diff --git a/tests/value-labels.c b/tests/value-labels.c
index d11c34e..c5aea8f 100644
--- a/tests/value-labels.c
+++ b/tests/value-labels.c
@@ -89,9 +89,9 @@
FAIL("Couldn't locate label symbol \"%s\"", name);
if ((p - prop->data) != off)
- FAIL("Label \"%s\" points to offset %d instead of %d"
+ FAIL("Label \"%s\" points to offset %ld instead of %d"
"in property \"%s\"", labels[i].labelname,
- p - prop->data, off, name);
+ (long)(p - prop->data), off, name);
}
}