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| author | Gabe Black <gblack@eecs.umich.edu> | 2008-06-12 00:46:04 -0400 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2008-06-12 00:46:04 -0400 |
| commit | 8e2991b529fd63f4d7c56518ebfbd2424f964172 (patch) | |
| tree | 6d84d9f9ef40416c7fc188df668c9b0225b55be8 /src/arch | |
| parent | 16e189fad21cd30a84fa736ac0dd7eb3dc9ba724 (diff) | |
| download | gem5-8e2991b529fd63f4d7c56518ebfbd2424f964172.tar.xz | |
X86: Fix the implementation of BSF.
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86/isa/insts/general_purpose/compare_and_test/bit_scan.py | 90 |
1 files changed, 54 insertions, 36 deletions
diff --git a/src/arch/x86/isa/insts/general_purpose/compare_and_test/bit_scan.py b/src/arch/x86/isa/insts/general_purpose/compare_and_test/bit_scan.py index a18437df3..f2a3db8a3 100644 --- a/src/arch/x86/isa/insts/general_purpose/compare_and_test/bit_scan.py +++ b/src/arch/x86/isa/insts/general_purpose/compare_and_test/bit_scan.py @@ -250,33 +250,39 @@ def macroop BSF_R_R { # Bit 6 srli t3, t1, 32, dataSize=8 - andi t3, t3, 32 - or reg, reg, t3 + andi t4, t3, 32, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 5 srli t3, t1, 16, dataSize=8 - andi t3, t3, 16 - or reg, reg, t3 + andi t4, t3, 16, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 4 srli t3, t1, 8, dataSize=8 - andi t3, t3, 8 - or reg, reg, t3 + andi t4, t3, 8, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 3 srli t3, t1, 4, dataSize=8 - andi t3, t3, 4 - or reg, reg, t3 + andi t4, t3, 4, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 2 srli t3, t1, 2, dataSize=8 - andi t3, t3, 2 - or reg, reg, t3 + andi t4, t3, 2, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 1 srli t3, t1, 1, dataSize=8 - andi t3, t3, 1 - or reg, reg, t3 + andi t4, t3, 1, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) end: fault "NoFault" @@ -299,33 +305,39 @@ def macroop BSF_R_M { # Bit 6 srli t3, t1, 32, dataSize=8 - andi t3, t3, 32 - or reg, reg, t3 + andi t4, t3, 32, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 5 srli t3, t1, 16, dataSize=8 - andi t3, t3, 16 - or reg, reg, t3 + andi t4, t3, 16, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 4 srli t3, t1, 8, dataSize=8 - andi t3, t3, 8 - or reg, reg, t3 + andi t4, t3, 8, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 3 srli t3, t1, 4, dataSize=8 - andi t3, t3, 4 - or reg, reg, t3 + andi t4, t3, 4, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 2 srli t3, t1, 2, dataSize=8 - andi t3, t3, 2 - or reg, reg, t3 + andi t4, t3, 2, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 1 srli t3, t1, 1, dataSize=8 - andi t3, t3, 1 - or reg, reg, t3 + andi t4, t3, 1, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) end: fault "NoFault" @@ -349,33 +361,39 @@ def macroop BSF_R_P { # Bit 6 srli t3, t1, 32, dataSize=8 - andi t3, t3, 32 - or reg, reg, t3 + andi t4, t3, 32, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 5 srli t3, t1, 16, dataSize=8 - andi t3, t3, 16 - or reg, reg, t3 + andi t4, t3, 16, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 4 srli t3, t1, 8, dataSize=8 - andi t3, t3, 8 - or reg, reg, t3 + andi t4, t3, 8, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 3 srli t3, t1, 4, dataSize=8 - andi t3, t3, 4 - or reg, reg, t3 + andi t4, t3, 4, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 2 srli t3, t1, 2, dataSize=8 - andi t3, t3, 2 - or reg, reg, t3 + andi t4, t3, 2, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) # Bit 1 srli t3, t1, 1, dataSize=8 - andi t3, t3, 1 - or reg, reg, t3 + andi t4, t3, 1, flags=(EZF,) + or reg, reg, t4 + mov t1, t1, t3, flags=(nCEZF,) end: fault "NoFault" |