a345481baa
Correct sign-propagation before multiplication in MULQ_W helper. The change also fixes previously incorrect expected values in the tests for MULQ_RS.W and MULQ_S.W. Signed-off-by: Petar Jovanovic <petarj@mips.com> Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
37 lines
636 B
C
37 lines
636 B
C
#include<stdio.h>
|
|
#include<assert.h>
|
|
|
|
int main()
|
|
{
|
|
int rd, rs, rt, dsp;
|
|
int result, resultdsp;
|
|
|
|
rs = 0x80001234;
|
|
rt = 0x80004321;
|
|
result = 0x7FFFAAAB;
|
|
|
|
__asm
|
|
("mulq_rs.w %0, %1, %2\n\t"
|
|
: "=r"(rd)
|
|
: "r"(rs), "r"(rt)
|
|
);
|
|
assert(rd == result);
|
|
|
|
rs = 0x80000000;
|
|
rt = 0x80000000;
|
|
result = 0x7FFFFFFF;
|
|
resultdsp = 1;
|
|
|
|
__asm
|
|
("mulq_rs.w %0, %2, %3\n\t"
|
|
"rddsp %1\n\t"
|
|
: "=r"(rd), "=r"(dsp)
|
|
: "r"(rs), "r"(rt)
|
|
);
|
|
dsp = (dsp >> 21) & 0x01;
|
|
assert(rd == result);
|
|
assert(dsp == resultdsp);
|
|
|
|
return 0;
|
|
}
|