diff options
| author |   miod <miod@openbsd.org> | 2007-03-13 21:42:33 +0000 |
|---|---|---|
| committer | miod <miod@openbsd.org> | 2007-03-13 21:42:33 +0000 |
| commit | 6729ecde6aa85fcdeff9e9a93aceb09b0a0d9840 (patch) | |
| tree | c40fb9d9eec9468c1d5c51937944397eba46cf30 | |
| parent | Nuke __HAVE_OLD_DISKLABEL code, this was never defined anyway. (diff) | |
| download | wireguard-openbsd-6729ecde6aa85fcdeff9e9a93aceb09b0a0d9840.tar.xz wireguard-openbsd-6729ecde6aa85fcdeff9e9a93aceb09b0a0d9840.zip | |
Set the DN bit in the fpscr upon startup, to prevent faulting when loading
denormals. This is recommended by the manual, and is necessary for the gdb
testsuite to pass; found by, discussed with, and ok kettenis@
(be sure to make includes before recompiling csu)
| -rw-r--r-- | lib/csu/sh/crt0.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/csu/sh/crt0.c b/lib/csu/sh/crt0.c index 01be7a702a5..6e08127090d 100644 --- a/lib/csu/sh/crt0.c +++ b/lib/csu/sh/crt0.c @@ -1,4 +1,4 @@ -/* $OpenBSD: crt0.c,v 1.2 2007/03/02 06:11:54 miod Exp $ */ +/* $OpenBSD: crt0.c,v 1.3 2007/03/13 21:42:33 miod Exp $ */ /* $NetBSD: crt0.c,v 1.10 2004/08/26 21:16:41 thorpej Exp $ */ /* @@ -40,6 +40,7 @@ #include <sys/param.h> #include <machine/asm.h> +#include <machine/fpu.h> #include <stdlib.h> static char *_strrchr(const char *, char); @@ -81,6 +82,8 @@ ___start(int argc, char **argv, char **envp, void *ps_strings, extern unsigned int __fpscr_values[2]; __set_fpscr(0); + __fpscr_values[0] |= FPSCR_DN; + __fpscr_values[1] |= FPSCR_DN; __asm__ __volatile__ ("lds %0, fpscr" : : "r" (__fpscr_values[1])); #endif |