add a DIVS function as separate and discrete from floor_div

[soc.git] / src / soc / decoder / pseudo / pywriter.py

diff --git a/src/soc/decoder/pseudo/pywriter.py b/src/soc/decoder/pseudo/pywriter.py
index 4b6b03abbf800e957bb8cbc367174bff443e8280..f06d996f388399bb8cd078107bc967f394788bbb 100644 (file)
--- a/src/soc/decoder/pseudo/pywriter.py
+++ b/src/soc/decoder/pseudo/pywriter.py
@@ -2,6 +2,8 @@
 
 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
@@ -17,7 +19,9 @@ 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,)
+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)
 from soc.decoder.selectable_int import SelectableInt
 from soc.decoder.selectable_int import selectconcat as concat
 from soc.decoder.orderedset import OrderedSet
@@ -29,7 +33,8 @@ class %s:
 iinfo_template = """instruction_info(func=%s,
                 read_regs=%s,
                 uninit_regs=%s, write_regs=%s,
-                op_fields=%s, form='%s',
+                special_regs=%s, op_fields=%s,
+                form='%s',
                 asmregs=%s)"""
 
 class PyISAWriter(ISA):
@@ -48,12 +53,14 @@ class PyISAWriter(ISA):
             # go through all instructions
             for page in instrs:
                 d = self.instr[page]
-                print (fname, d.opcode)
+                print ("page", pagename, page, fname, d.opcode)
                 pcode = '\n'.join(d.pcode) + '\n'
                 print (pcode)
-                pycode, rused = convert_to_python(pcode, d.form)
+                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']))
@@ -62,6 +69,8 @@ class PyISAWriter(ISA):
                 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()
@@ -75,17 +84,34 @@ class PyISAWriter(ISA):
                 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))
@@ -93,8 +119,8 @@ class PyISAWriter(ISA):
 
             classes = ', '.join(['ISACaller'] + self.pages_written)
             f.write('class ISA(%s):\n' % classes)
-            f.write('    def __init__(self, dec, regs):\n')
-            f.write('        super().__init__(dec, regs)\n')
+            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)
@@ -110,4 +136,5 @@ if __name__ == '__main__':
         sources = sys.argv[1:]
     for source in sources:
         isa.write_pysource(source)
+        isa.patch_if_needed(source)
     isa.write_isa_class()