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authorUlrich Drepper <drepper@redhat.com>2003-09-17 08:47:44 +0000
committerUlrich Drepper <drepper@redhat.com>2003-09-17 08:47:44 +0000
commita4db3439f1177cf5c5ceb80bfa3f3a2cef00fc0e (patch)
treee21a8cd5a2222281888d37b530d360e92995abd7 /sysdeps/i386/Makefile
parent6c052003bda07641309dcd4fe4a5158d24f5d607 (diff)
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Update.
2003-09-15 Jakub Jelinek <jakub@redhat.com> * sysdeps/i386/Makefile (sysdep-CFLAGS): If not in math or csu subdir, add -mpreferred-stack-boundary=4, with few exceptions. 2003-09-17 Jakub Jelinek <jakub@redhat.com> * Makeconfig (stack-align-test-flags): Set. * stdlib/Makefile (CFLAGS-tst-bsearch.c): Add $(stack-align-test-flags). * stdlib/tst-bsearch.c: Include tst-stack-align.h. (align_check): New var. (comp): Use TEST_STACK_ALIGN macro. (do_test): Fail if align_check != 1. * sysdeps/generic/tst-stack-align.h: New file. * sysdeps/i386/i686/Makefile (stack-align-test-flags): Add -msse. * sysdeps/i386/i686/tst-stack-align.h: New file.
Diffstat (limited to 'sysdeps/i386/Makefile')
-rw-r--r--sysdeps/i386/Makefile35
1 files changed, 35 insertions, 0 deletions
diff --git a/sysdeps/i386/Makefile b/sysdeps/i386/Makefile
index ba0d21f..5602770 100644
--- a/sysdeps/i386/Makefile
+++ b/sysdeps/i386/Makefile
@@ -20,3 +20,38 @@ CFLAGS-rtld.c += -Wno-uninitialized -Wno-unused
CFLAGS-dl-load.c += -Wno-unused
CFLAGS-dl-reloc.c += -Wno-unused
endif
+
+# Most of the glibc routines don't ever call user defined callbacks
+# nor use any FPU or SSE* and as such don't need bigger %esp alignment
+# than 4 bytes.
+# Lots of routines in math will use FPU, so make math subdir an exception
+# here.
+ifeq ($(subdir),math)
+sysdep-CFLAGS += -mpreferred-stack-boundary=4
+else
+ifeq ($(subdir),csu)
+sysdep-CFLAGS += -mpreferred-stack-boundary=4
+else
+sysdep-CFLAGS += -mpreferred-stack-boundary=2
+# Likewise, any function which calls user callbacks
+uses-callbacks += -mpreferred-stack-boundary=4
+endif
+endif
+
+# And a couple of other routines
+ifeq ($(subdir),stdlib)
+CFLAGS-exit.c += -mpreferred-stack-boundary=4
+endif
+ifeq ($(subdir),elf)
+CFLAGS-dl-init.c += -mpreferred-stack-boundary=4
+CFLAGS-dl-fini.c += -mpreferred-stack-boundary=4
+CFLAGS-dl-open.c += -mpreferred-stack-boundary=4
+CFLAGS-dl-close.c += -mpreferred-stack-boundary=4
+CFLAGS-dl-error.c += -mpreferred-stack-boundary=4
+endif
+ifeq ($(subdir),dlfcn)
+CFLAGS-dlopen.c += -mpreferred-stack-boundary=4
+CFLAGS-dlopenold.c += -mpreferred-stack-boundary=4
+CFLAGS-dlclose.c += -mpreferred-stack-boundary=4
+CFLAGS-dlerror.c += -mpreferred-stack-boundary=4
+endif