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ARM: Implement the unsigned 8 bit and 16 bit vector adds and subtracts.

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This commit is contained in:
Gabe Black 2010-06-02 12:58:06 -05:00
parent 29acf9516c
commit 3f12eb02ab
1 changed files with 105 additions and 0 deletions
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105
src/arch/arm/isa/insts/data.isa
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@ -501,4 +501,109 @@ let {{
replaceBits(resTemp, 31, 16, midRes);
Dest = resTemp;
''', flagType="none", buildCc=False)
buildRegDataInst("uadd16", '''
uint32_t geBits = 0;
resTemp = 0;
for (unsigned i = 0; i < 2; i++) {
int high = (i + 1) * 16 - 1;
int low = i * 16;
int32_t midRes = bits(Op1, high, low) +
bits(Op2, high, low);
if (midRes >= 0x10000) {
geBits = geBits | (0x3 << (i * 2));
}
replaceBits(resTemp, high, low, midRes);
}
Dest = resTemp;
resTemp = geBits;
''', flagType="ge", buildNonCc=False)
buildRegDataInst("uadd8", '''
uint32_t geBits = 0;
resTemp = 0;
for (unsigned i = 0; i < 4; i++) {
int high = (i + 1) * 8 - 1;
int low = i * 8;
int32_t midRes = bits(Op1, high, low) +
bits(Op2, high, low);
if (midRes >= 0x100) {
geBits = geBits | (1 << i);
}
replaceBits(resTemp, high, low, midRes);
}
Dest = resTemp;
resTemp = geBits;
''', flagType="ge", buildNonCc=False)
buildRegDataInst("usub16", '''
uint32_t geBits = 0;
resTemp = 0;
for (unsigned i = 0; i < 2; i++) {
int high = (i + 1) * 16 - 1;
int low = i * 16;
int32_t midRes = bits(Op1, high, low) -
bits(Op2, high, low);
if (midRes >= 0) {
geBits = geBits | (0x3 << (i * 2));
}
replaceBits(resTemp, high, low, midRes);
}
Dest = resTemp;
resTemp = geBits;
''', flagType="ge", buildNonCc=False)
buildRegDataInst("usub8", '''
uint32_t geBits = 0;
resTemp = 0;
for (unsigned i = 0; i < 4; i++) {
int high = (i + 1) * 8 - 1;
int low = i * 8;
int32_t midRes = bits(Op1, high, low) -
bits(Op2, high, low);
if (midRes >= 0) {
geBits = geBits | (1 << i);
}
replaceBits(resTemp, high, low, midRes);
}
Dest = resTemp;
resTemp = geBits;
''', flagType="ge", buildNonCc=False)
buildRegDataInst("uasx", '''
int32_t midRes, geBits = 0;
resTemp = 0;
int64_t arg1Low = bits(Op1.sw, 15, 0);
int64_t arg1High = bits(Op1.sw, 31, 16);
int64_t arg2Low = bits(Op2.sw, 15, 0);
int64_t arg2High = bits(Op2.sw, 31, 16);
midRes = arg1Low - arg2High;
if (midRes >= 0) {
geBits = geBits | 0x3;
}
replaceBits(resTemp, 15, 0, midRes);
midRes = arg1High + arg2Low;
if (midRes >= 0x10000) {
geBits = geBits | 0xc;
}
replaceBits(resTemp, 31, 16, midRes);
Dest = resTemp;
resTemp = geBits;
''', flagType="ge", buildNonCc=False)
buildRegDataInst("usax", '''
int32_t midRes, geBits = 0;
resTemp = 0;
int64_t arg1Low = bits(Op1.sw, 15, 0);
int64_t arg1High = bits(Op1.sw, 31, 16);
int64_t arg2Low = bits(Op2.sw, 15, 0);
int64_t arg2High = bits(Op2.sw, 31, 16);
midRes = arg1Low + arg2High;
if (midRes >= 0x10000) {
geBits = geBits | 0x3;
}
replaceBits(resTemp, 15, 0, midRes);
midRes = arg1High - arg2Low;
if (midRes >= 0) {
geBits = geBits | 0xc;
}
replaceBits(resTemp, 31, 16, midRes);
Dest = resTemp;
resTemp = geBits;
''', flagType="ge", buildNonCc=False)
}};