Make use of some of the REX prefix.
--HG-- extra : convert_revision : 948eceb59a1cd9b02ad9355dd5894af0bbec4e83
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1 changed files with 6 additions and 3 deletions
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@ -95,6 +95,9 @@ let {{
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self.size = match.group("size")
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self.rsize = match.group("rsize")
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ModRMRegIndex = "(MODRM_REG | (REX_R << 3))"
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ModRMRMIndex = "(MODRM_RM | (REX_B << 3))"
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# This function specializes the given piece of code to use a particular
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# set of argument types described by "opTypes".
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def specializeInst(Name, opTypes, env):
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@ -121,14 +124,14 @@ let {{
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raise Exception, "Problem parsing operand tag: %s" % opType.tag
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elif opType.tag in ("C", "D", "G", "P", "S", "T", "V"):
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# Use the "reg" field of the ModRM byte to select the register
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env.addReg("(uint8_t)MODRM_REG")
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env.addReg(ModRMRegIndex)
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elif opType.tag in ("E", "Q", "W"):
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# This might refer to memory or to a register. We need to
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# divide it up farther.
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regTypes = copy.copy(opTypes)
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regTypes.pop(0)
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regEnv = copy.copy(env)
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regEnv.addReg("(uint8_t)MODRM_RM")
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regEnv.addReg(ModRMRMIndex)
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# This needs to refer to memory, but we'll fill in the details
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# later. It needs to take into account unaligned memory
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# addresses.
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@ -149,7 +152,7 @@ let {{
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elif opType.tag in ("PR", "R", "VR"):
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# There should probably be a check here to verify that mod
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# is equal to 11b
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env.addReg("(uint8_t)MODRM_RM")
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env.addReg(ModRMRMIndex)
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else:
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raise Exception, "Unrecognized tag %s." % opType.tag
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opTypes.pop(0)
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