-# python code-writer for OpenPOWER ISA pseudo-code parsing
+# moved to openpower-isa
+# https://git.libre-soc.org/?p=openpower-isa.git;a=summary
+# wildcard imports here ONLY to support migration
-import os
-import sys
-import shutil
-import subprocess
-from soc.decoder.pseudo.pagereader import ISA
-from soc.decoder.power_pseudo import convert_to_python
-from soc.decoder.orderedset import OrderedSet
-from soc.decoder.isa.caller import create_args
-
-
-def get_isasrc_dir():
- fdir = os.path.abspath(os.path.dirname(__file__))
- fdir = os.path.split(fdir)[0]
- return os.path.join(fdir, "isa")
-
-
-header = """\
-# auto-generated by pywriter.py, do not edit or commit
-
-from soc.decoder.isa.caller import inject, instruction_info
-from soc.decoder.helpers import (EXTS, EXTS64, EXTZ64, ROTL64, ROTL32, MASK,
- ne, eq, gt, ge, lt, le, ltu, gtu, length,
- trunc_divs, trunc_rems, MULS, DIVS, MODS,
- EXTS128, undefined)
-from soc.decoder.selectable_int import SelectableInt
-from soc.decoder.selectable_int import selectconcat as concat
-from soc.decoder.orderedset import OrderedSet
-
-class %s:
-
-"""
-
-iinfo_template = """instruction_info(func=%s,
- read_regs=%s,
- uninit_regs=%s, write_regs=%s,
- special_regs=%s, op_fields=%s,
- form='%s',
- asmregs=%s)"""
-
-
-class PyISAWriter(ISA):
- def __init__(self):
- ISA.__init__(self)
- self.pages_written = []
-
- def write_pysource(self, pagename):
- self.pages_written.append(pagename)
- instrs = isa.page[pagename]
- isadir = get_isasrc_dir()
- fname = os.path.join(isadir, "%s.py" % pagename)
- with open(fname, "w") as f:
- iinf = ''
- f.write(header % pagename) # write out header
- # go through all instructions
- for page in instrs:
- d = self.instr[page]
- print("page", pagename, page, fname, d.opcode)
- pcode = '\n'.join(d.pcode) + '\n'
- print(pcode)
- incl_carry = pagename == 'fixedshift'
- pycode, rused = convert_to_python(pcode, d.form, incl_carry)
- # create list of arguments to call
- regs = list(rused['read_regs']) + list(rused['uninit_regs'])
- regs += list(rused['special_regs'])
- args = ', '.join(create_args(regs, 'self'))
- # create list of arguments to return
- retargs = ', '.join(create_args(rused['write_regs']))
- # write out function. pre-pend "op_" because some instrs are
- # also python keywords (cmp). also replace "." with "_"
- op_fname = "op_%s" % page.replace(".", "_")
- f.write(" @inject()\n")
- f.write(" def %s(%s):\n" % (op_fname, args))
- if 'NIA' in pycode: # HACK - TODO fix
- f.write(" global NIA\n")
- pycode = pycode.split("\n")
- pycode = '\n'.join(map(lambda x: " %s" % x, pycode))
- pycode = pycode.rstrip()
- f.write(pycode + '\n')
- if retargs:
- f.write(" return (%s,)\n\n" % retargs)
- else:
- f.write("\n")
- # accumulate the instruction info
- ops = repr(rused['op_fields'])
- iinfo = iinfo_template % (op_fname, rused['read_regs'],
- rused['uninit_regs'],
- rused['write_regs'],
- rused['special_regs'],
- ops, d.form, d.regs)
- iinf += " %s_instrs['%s'] = %s\n" % (pagename, page, iinfo)
- # write out initialisation of info, for ISACaller to use
- f.write(" %s_instrs = {}\n" % pagename)
- f.write(iinf)
-
- def patch_if_needed(self, source):
- isadir = get_isasrc_dir()
- fname = os.path.join(isadir, "%s.py" % source)
- patchname = os.path.join(isadir, "%s.patch" % source)
-
- try:
- with open(patchname, 'r') as patch:
- newfname = fname + '.orig'
- shutil.copyfile(fname, newfname)
- subprocess.check_call(['patch', fname],
- stdin=patch)
- except:
- pass
-
- def write_isa_class(self):
- isadir = get_isasrc_dir()
- fname = os.path.join(isadir, "all.py")
-
- with open(fname, "w") as f:
- f.write('# auto-generated by pywriter.py: do not edit or commit\n')
- f.write('from soc.decoder.isa.caller import ISACaller\n')
- for page in self.pages_written:
- f.write('from soc.decoder.isa.%s import %s\n' % (page, page))
- f.write('\n')
-
- classes = ', '.join(['ISACaller'] + self.pages_written)
- f.write('class ISA(%s):\n' % classes)
- f.write(' def __init__(self, *args, **kwargs):\n')
- f.write(' super().__init__(*args, **kwargs)\n')
- f.write(' self.instrs = {\n')
- for page in self.pages_written:
- f.write(' **self.%s_instrs,\n' % page)
- f.write(' }\n')
-
-
-if __name__ == '__main__':
- isa = PyISAWriter()
- write_isa_class = True
- if len(sys.argv) == 1: # quick way to do it
- print(dir(isa))
- sources = isa.page.keys()
- else:
- sources = sys.argv[1:]
- if sources[0] == "noall": # don't rewrite all.py
- write_isa_class = False
- sources.pop(0)
- print ("sources", write_isa_class, sources)
- for source in sources:
- isa.write_pysource(source)
- isa.patch_if_needed(source)
- if write_isa_class:
- isa.write_isa_class()
+from openpower.decoder.pseudo.pywriter import *
projects / soc.git / blobdiff