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authorAndreas Jaeger <aj@suse.de>2003-11-13 16:41:19 +0000
committerAndreas Jaeger <aj@suse.de>2003-11-13 16:41:19 +0000
commit19c33b6ecca76cfaca0113485f63fc5e9f9a1c66 (patch)
treec58cfdc40d9321dceb925754679be574f5dc8d31 /sysdeps
parente08dbbd198e80b85da3b7e060c5b0940b52337f7 (diff)
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Update.
2003-11-13 Andreas Jaeger <aj@suse.de> * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_TGKILL): Define appropriately for x86_64. (__ASSUME_UTIMES): Likewise. (__ASSUME_FADVISE64_64_SYSCALL): Likewise. (__ASSUME_CLONE_THREAD_FLAGS): Likewise. * sysdeps/x86_64/fpu/s_ceill.S: New file.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/x86_64/fpu/s_ceill.S31
1 files changed, 31 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/s_ceill.S b/sysdeps/x86_64/fpu/s_ceill.S
new file mode 100644
index 0000000000..efc8dd995e
--- /dev/null
+++ b/sysdeps/x86_64/fpu/s_ceill.S
@@ -0,0 +1,31 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Changes for long double by Ulrich Drepper <drepper@cygnus.com>
+ * Changes for x86-64 by Andreas Jaeger <aj@suse.de>
+ * Public domain.
+ */
+
+#include <machine/asm.h>
+
+
+ENTRY(__ceill)
+ fldt 8(%rsp)
+
+ fstcw -4(%rsp) /* store fpu control word */
+
+ /* We use here %edx although only the low 1 bits are defined.
+ But none of the operations should care and they are faster
+ than the 16 bit operations. */
+ movl $0x0800,%edx /* round towards +oo */
+ orl -4(%rsp),%edx
+ andl $0xfbff,%edx
+ movl %edx,-8(%rsp)
+ fldcw -8(%rsp) /* load modified control word */
+
+ frndint /* round */
+
+ fldcw -4(%rsp) /* restore original control word */
+
+ ret
+END (__ceill)
+weak_alias (__ceill, ceill)