# HG changeset patch # User Vince Weaver <[email protected]> # Date 1256926746 14400 # Node ID 3973c2b7f6e9358be14e6e1a8ea30b66c734f076 # Parent 4842482e1bd1fbc33b8a6f4cf6cc9eec32cda800 implement the X86 sse2 haddpd instruction
This patch implements the haddpd instruction.
It fixes the problem in the previous version (pointed out by Gabe Black)
where an incorrect result would happen if you issue the instruction
with the same argument twice, i.e. "haddpd %xmm0,%xmm0"
This instruction is used by many spec2k benchmarks.
diff -r 4842482e1bd1 -r 3973c2b7f6e9
src/arch/x86/isa/decoder/two_byte_opcodes.isa
--- a/src/arch/x86/isa/decoder/two_byte_opcodes.isa Fri Oct 30 00:44:55
2009 -0700
+++ b/src/arch/x86/isa/decoder/two_byte_opcodes.isa Fri Oct 30 14:19:06
2009 -0400
@@ -707,7 +707,7 @@
}
// operand size (0x66)
0x1: decode OPCODE_OP_BOTTOM3 {
- 0x4: WarnUnimpl::haddpd_Vo_Wo();
+ 0x4: HADDPD(Vo,Wo);
0x5: WarnUnimpl::hsubpd_Vo_Wo();
0x6: WarnUnimpl::movd_Ed_Vd();
0x7: MOVDQA(Wo,Vo);
diff -r 4842482e1bd1 -r 3973c2b7f6e9
src/arch/x86/isa/insts/simd128/floating_point/arithmetic/horizontal_addition.py
---
a/src/arch/x86/isa/insts/simd128/floating_point/arithmetic/horizontal_addition.py
Fri Oct 30 00:44:55 2009 -0700
+++
b/src/arch/x86/isa/insts/simd128/floating_point/arithmetic/horizontal_addition.py
Fri Oct 30 14:19:06 2009 -0400
@@ -55,5 +55,25 @@
microcode = '''
# HADDPS
-# HADDPD
+
+def macroop HADDPD_XMM_XMM {
+ maddf ufp1, xmmh , xmml, size=8, ext=1
+ maddf xmmh, xmmlm, xmmhm, size=8, ext=1
+ movfp xmml, ufp1
+};
+
+def macroop HADDPD_XMM_M {
+ ldfp ufp1, seg, sib, disp, dataSize=8
+ ldfp ufp2, seg, sib, "DISPLACEMENT+8", dataSize=8
+ maddf xmml, xmmh, xmml, size=8, ext=1
+ maddf xmmh, ufp1, ufp2, size=8, ext=1
+};
+
+def macroop HADDPD_XMM_P {
+ rdip t7
+ ldfp ufp1, seg, riprel, disp, dataSize=8
+ ldfp ufp2, seg, riprel, "DISPLACEMENT+8", dataSize=8
+ maddf xmml, xmmh, xmml, size=8, ext=1
+ maddf xmmh, ufp1, ufp2, size=8, ext=1
+};
'''
haddpd
Description: Binary data
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