sanchayanmaity/gem5
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

X86: Implement the multiply and add instructions.

Browse source
This commit is contained in:
Gabe Black 2009-08-17 20:15:16 -07:00
parent 200fed31de
commit 45bae0c70f
3 changed files with 80 additions and 33 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

60
src/arch/x86/isa/decoder/two_byte_opcodes.isa
View file

@ -1062,38 +1062,36 @@
}
default: UD2();
}
}
0x1E: decode LEGACY_DECODEVAL {
// no prefix
0x0: decode OPCODE_OP_BOTTOM3 {
0x1: Inst::PSLLW(Pq,Qq);
0x2: Inst::PSLLD(Pq,Qq);
0x3: Inst::PSLLQ(Pq,Qq);
0x4: Inst::PMULUDQ(Pq,Qq);
0x5: pmaddwd_Pq_Qq();
0x6: Inst::PSADBW(Pq,Qq);
0x7: maskmovq_Pq_PRq();
default: Inst::UD2();
0x1E: decode LEGACY_DECODEVAL {
// no prefix
0x0: decode OPCODE_OP_BOTTOM3 {
0x1: PSLLW(Pq,Qq);
0x2: PSLLD(Pq,Qq);
0x3: PSLLQ(Pq,Qq);
0x4: PMULUDQ(Pq,Qq);
0x5: PMADDWD(Pq,Qq);
0x6: PSADBW(Pq,Qq);
0x7: WarnUnimpl::maskmovq_Pq_PRq();
default: UD2();
}
// operand size (0x66)
0x1: decode OPCODE_OP_BOTTOM3 {
0x1: PSLLW(Vo,Wo);
0x2: PSLLD(Vo,Wo);
0x3: PSLLQ(Vo,Wo);
0x4: PMULUDQ(Vo,Wo);
0x5: PMADDWD(Vo,Wo);
0x6: PSADBW(Vo,Wo);
0x7: WarnUnimpl::maskmovdqu_Vo_VRo();
default: UD2();
}
// repne (0xF2)
0x8: decode OPCODE_OP_BOTTOM3 {
0x0: WarnUnimpl::lddqu_Vo_Mo();
default: UD2();
}
default: UD2();
}
// operand size (0x66)
0x1: decode OPCODE_OP_BOTTOM3 {
0x1: Inst::PSLLW(Vo,Wo);
0x2: Inst::PSLLD(Vo,Wo);
0x3: Inst::PSLLQ(Vo,Wo);
0x4: Inst::PMULUDQ(Vo,Wo);
0x5: pmaddwd_Vo_Wo();
0x6: Inst::PSADBW(Vo,Wo);
0x7: maskmovdqu_Vo_VRo();
default: Inst::UD2();
}
// repne (0xF2)
0x8: decode OPCODE_OP_BOTTOM3 {
0x0: lddqu_Vo_Mo();
default: Inst::UD2();
}
default: Inst::UD2();
}
format Inst {
0x1F: decode LEGACY_DECODEVAL {
// no prefix
0x0: decode OPCODE_OP_BOTTOM3 {

32
src/arch/x86/isa/insts/simd128/integer/arithmetic/multiply_add.py
View file

@ -54,5 +54,35 @@
# Authors: Gabe Black
microcode = '''
# PMADDWD
def macroop PMADDWD_XMM_XMM {
mmuli ufp3, xmml, xmmlm, srcSize=2, destSize=4, ext=(0x2 | 0x10 | 0x20)
mmuli ufp4, xmml, xmmlm, srcSize=2, destSize=4, ext=(0x2 | 0x10)
maddi xmml, ufp3, ufp4, size=4, ext=0
mmuli ufp3, xmmh, xmmhm, srcSize=2, destSize=4, ext=(0x2 | 0x10 | 0x20)
mmuli ufp4, xmmh, xmmhm, srcSize=2, destSize=4, ext=(0x2 | 0x10)
maddi xmmh, ufp3, ufp4, size=4, ext=0
};
def macroop PMADDWD_XMM_M {
ldfp ufp1, seg, sib, "DISPLACEMENT", dataSize=8
ldfp ufp2, seg, sib, "DISPLACEMENT + 8", dataSize=8
mmuli ufp3, xmml, ufp1, srcSize=2, destSize=4, ext=(0x2 | 0x10 | 0x20)
mmuli ufp4, xmml, ufp1, srcSize=2, destSize=4, ext=(0x2 | 0x10)
maddi xmml, ufp3, ufp4, size=4, ext=0
mmuli ufp3, xmmh, ufp2, srcSize=2, destSize=4, ext=(0x2 | 0x10 | 0x20)
mmuli ufp4, xmmh, ufp2, srcSize=2, destSize=4, ext=(0x2 | 0x10)
maddi xmmh, ufp3, ufp4, size=4, ext=0
};
def macroop PMADDWD_XMM_P {
rdip t7
ldfp ufp1, seg, riprel, "DISPLACEMENT", dataSize=8
ldfp ufp2, seg, riprel, "DISPLACEMENT + 8", dataSize=8
mmuli ufp3, xmml, ufp1, srcSize=2, destSize=4, ext=(0x2 | 0x10 | 0x20)
mmuli ufp4, xmml, ufp1, srcSize=2, destSize=4, ext=(0x2 | 0x10)
maddi xmml, ufp3, ufp4, size=4, ext=0
mmuli ufp3, xmmh, ufp2, srcSize=2, destSize=4, ext=(0x2 | 0x10 | 0x20)
mmuli ufp4, xmmh, ufp2, srcSize=2, destSize=4, ext=(0x2 | 0x10)
maddi xmmh, ufp3, ufp4, size=4, ext=0
};
'''

21
src/arch/x86/isa/insts/simd64/integer/arithmetic/multiply_add.py
View file

@ -54,5 +54,24 @@
# Authors: Gabe Black
microcode = '''
# PMADDWD
def macroop PMADDWD_MMX_MMX {
mmuli ufp3, mmx, mmxm, srcSize=2, destSize=4, ext=(0x2 | 0x10 | 0x20)
mmuli ufp4, mmx, mmxm, srcSize=2, destSize=4, ext=(0x2 | 0x10)
maddi mmx, ufp3, ufp4, size=4, ext=0
};
def macroop PMADDWD_MMX_M {
ldfp ufp1, seg, sib, "DISPLACEMENT", dataSize=8
mmuli ufp3, mmx, ufp1, srcSize=2, destSize=4, ext=(0x2 | 0x10 | 0x20)
mmuli ufp4, mmx, ufp1, srcSize=2, destSize=4, ext=(0x2 | 0x10)
maddi mmx, ufp3, ufp4, size=4, ext=0
};
def macroop PMADDWD_MMX_P {
rdip t7
ldfp ufp1, seg, riprel, "DISPLACEMENT", dataSize=8
mmuli ufp3, mmx, ufp1, srcSize=2, destSize=4, ext=(0x2 | 0x10 | 0x20)
mmuli ufp4, mmx, ufp1, srcSize=2, destSize=4, ext=(0x2 | 0x10)
maddi mmx, ufp3, ufp4, size=4, ext=0
};
'''