diff options
Diffstat (limited to 'src/arch/isa_parser.py')
-rwxr-xr-x | src/arch/isa_parser.py | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/arch/isa_parser.py b/src/arch/isa_parser.py index fb398d152..25908e986 100755 --- a/src/arch/isa_parser.py +++ b/src/arch/isa_parser.py @@ -1573,6 +1573,8 @@ def buildOperandNameMap(userDict, lineno): global operandsWithExtRE operandsWithExtRE = re.compile(operandsWithExtREString, re.MULTILINE) +maxInstSrcRegs = 0 +maxInstDestRegs = 0 class OperandList: @@ -1636,6 +1638,12 @@ class OperandList: if self.memOperand: error(0, "Code block has more than one memory operand.") self.memOperand = op_desc + global maxInstSrcRegs + global maxInstDestRegs + if maxInstSrcRegs < self.numSrcRegs: + maxInstSrcRegs = self.numSrcRegs + if maxInstDestRegs < self.numDestRegs: + maxInstDestRegs = self.numDestRegs # now make a final pass to finalize op_desc fields that may depend # on the register enumeration for op_desc in self.items: @@ -1855,6 +1863,22 @@ namespace %(namespace)s { %(decode_function)s ''' +max_inst_regs_template = ''' +/* + * DO NOT EDIT THIS FILE!!! + * + * It was automatically generated from the ISA description in %(filename)s + */ + +namespace %(namespace)s { + + const int MaxInstSrcRegs = %(MaxInstSrcRegs)d; + const int MaxInstDestRegs = %(MaxInstDestRegs)d; + +} // namespace %(namespace)s + +''' + # Update the output file only if the new contents are different from # the current contents. Minimizes the files that need to be rebuilt @@ -1954,6 +1978,16 @@ def parse_isa_desc(isa_desc_file, output_dir): update_if_needed(output_dir + '/' + cpu.filename, file_template % vars()) + # The variable names here are hacky, but this will creat local variables + # which will be referenced in vars() which have the value of the globals. + global maxInstSrcRegs + MaxInstSrcRegs = maxInstSrcRegs + global maxInstDestRegs + MaxInstDestRegs = maxInstDestRegs + # max_inst_regs.hh + update_if_needed(output_dir + '/max_inst_regs.hh', \ + max_inst_regs_template % vars()) + # global list of CpuModel objects (see cpu_models.py) cpu_models = [] |