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// Test result extraction of mac instructions.
// Test basic edge values
// UNSIGNED FRACTIONAL mode into SINGLE destination register
// test ops: "+="
# mach: bfin
.include "testutils.inc"
start
// load r0=0x80000001
// load r1=0x80007fff
// load r2=0xf000ffff
// load r3=0x0000007f
// load r4=0x00000080
loadsym P0, data0;
R0 = [ P0 ++ ];
R1 = [ P0 ++ ];
R2 = [ P0 ++ ];
R3 = [ P0 ++ ];
R4 = [ P0 ++ ];
// extraction with no saturation (truncate)
// 0x8000 * 0x7fff = 0x003fff8000 -> 0x3fff
A1 = A0 = 0;
R5.H = (A1 += R0.H * R1.L), R5.L = (A0 += R0.H * R1.L) (TFU);
DBGA ( R5.L , 0x3fff );
DBGA ( R5.H , 0x3fff );
// extraction with no saturation (round)
// 0x8000 * 0x7fff = 0x003fff8000 -> 0x4000
A1 = A0 = 0;
R5.H = (A1 += R0.H * R1.L), R5.L = (A0 += R0.H * R1.L) (FU);
DBGA ( R5.L , 0x4000 );
DBGA ( R5.H , 0x4000 );
// extraction with no saturation
// 0xffff * 0xffff = 0x00fffe0001 -> 0xfffe
A1 = A0 = 0;
R5.H = (A1 += R2.L * R2.L), R5.L = (A0 += R2.L * R2.L) (FU);
DBGA ( R5.L , 0xfffe );
DBGA ( R5.H , 0xfffe );
// extraction with saturation
//0x7ffffe0001 -> 0xffff
A1 = A0 = 0;
A1.x = R3.L;
A0.x = R3.L;
R5.H = (A1 += R2.L * R2.L), R5.L = (A0 += R2.L * R2.L) (FU);
DBGA ( R5.L , 0xffff );
DBGA ( R5.H , 0xffff );
pass
.data
data0:
.dw 0x0001
.dw 0x8000
.dw 0x7fff
.dw 0x8000
.dw 0xffff
.dw 0xf000
.dw 0x007f
.dw 0x0000
.dw 0x0080
.dw 0x0000
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