diff options
Diffstat (limited to 'src/arch/x86/isa/insts/arithmetic/multiply_and_divide.py')
| -rw-r--r-- | src/arch/x86/isa/insts/arithmetic/multiply_and_divide.py | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/src/arch/x86/isa/insts/arithmetic/multiply_and_divide.py b/src/arch/x86/isa/insts/arithmetic/multiply_and_divide.py index 662022e6a..8697bef65 100644 --- a/src/arch/x86/isa/insts/arithmetic/multiply_and_divide.py +++ b/src/arch/x86/isa/insts/arithmetic/multiply_and_divide.py @@ -53,7 +53,31 @@ # # Authors: Gabe Black -microcode = "" +microcode = ''' + +# +# Two operand signed multiply. These should set the CF and OF flags if the +# result is too large for the destination register +# + +def macroop IMUL_R_R +{ + mul1s reg, reg, regm +}; + +def macroop IMUL_R_M +{ + ld t1, ds, [scale, index, base], disp + mul1s reg, reg, t1 +}; + +def macroop IMUL_R_P +{ + rdip t7 + ld t1, ds, [scale, index, base], disp + mul1s reg, reg, t1 +}; +''' #let {{ # class MUL(Inst): # "GenFault ${new UnimpInstFault}" |