mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-12-15 21:44:50 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 12

support setting fpu precision on m68k (closes #20904)

Browse source 
Patch from Andreas Schwab.
This commit is contained in:
Benjamin Peterson 2014-04-17 00:00:31 -04:00
parent aedff520ea
commit 8bdeb1672c
5 changed files with 69 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

32
configure vendored
View file

@ -13244,6 +13244,38 @@ $as_echo "#define HAVE_GCC_ASM_FOR_X87 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we can use gcc inline assembler to get and set mc68881 fpcr" >&5
$as_echo_n "checking whether we can use gcc inline assembler to get and set mc68881 fpcr... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
unsigned int fpcr;
__asm__ __volatile__ ("fmove.l %%fpcr,%0" : "=g" (fpcr));
__asm__ __volatile__ ("fmove.l %0,%%fpcr" : : "g" (fpcr));
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
have_gcc_asm_for_mc68881=yes
else
have_gcc_asm_for_mc68881=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_gcc_asm_for_mc68881" >&5
$as_echo "$have_gcc_asm_for_mc68881" >&6; }
if test "$have_gcc_asm_for_mc68881" = yes
then
$as_echo "#define HAVE_GCC_ASM_FOR_MC68881 1" >>confdefs.h
fi
# Detect whether system arithmetic is subject to x87-style double
# rounding issues. The result of this test has little meaning on non
# IEEE 754 platforms. On IEEE 754, test should return 1 if rounding