According to http://gcc.gnu.org/projects/mipso64-abi.html
"if the first and second arguments floating-point arguments
to a function are 32-bit values, they are passed in $f12
and $f14". The assembler file obtained as a result of
compilation with mips64-none-elf-gcc-4.1.0 of the following
file (o64.c), shows that a pair of "float" parameters is
passed on $f12 and $f13 instead of $f12 and $f14.
When I compile the same file with mips64-none-elf-gcc-3.4.5,
I get assembler code where the parameters are passed on
$f12 and $f14.
extern float g01f;
int checkf (float x, float v)
{ if (x != v + 90.0)
{ return 1; }
else
{ return 0; }
}
void checkgf (void) {
checkf (g01f, 1);
}
void initf (float *p, float v)
{ *p = v + 90.0; }
--
Summary: Violation of mips o64 ABI
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: niva at niisi dot msk dot ru
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: mips64-none-elf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27338
