diff options
Diffstat (limited to 'src/arch/x86/isa')
| -rw-r--r-- | src/arch/x86/isa/specialize.isa | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/arch/x86/isa/specialize.isa b/src/arch/x86/isa/specialize.isa index 3183f32ba..5165ea206 100644 --- a/src/arch/x86/isa/specialize.isa +++ b/src/arch/x86/isa/specialize.isa @@ -118,6 +118,7 @@ let {{ ModRMRegIndex = "(MODRM_REG | (REX_R << 3))" ModRMRMIndex = "(MODRM_RM | (REX_B << 3))" + InstRegIndex = "(OPCODE_OP_BOTTOM3 | (REX_B << 3))" # This function specializes the given piece of code to use a particular # set of argument types described by "opTypes". @@ -143,6 +144,10 @@ let {{ else: print "Didn't recognize fixed register size %s!" % opType.rsize Name += "_R" + elif opType.tag == "B": + # This refers to registers whose index is encoded as part of the opcode + Name += "_R" + env.addReg(InstRegIndex) elif opType.tag == "M": # This refers to memory. The macroop constructor sets up modrm # addressing. Non memory modrm settings should cause an error. |