diff options
Diffstat (limited to 'passes/pmgen/pmgen.py')
| -rw-r--r-- | passes/pmgen/pmgen.py | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/passes/pmgen/pmgen.py b/passes/pmgen/pmgen.py new file mode 100644 index 000000000..bf70a6dbd --- /dev/null +++ b/passes/pmgen/pmgen.py @@ -0,0 +1,262 @@ +#!/usr/bin/env python3 + +import re +import sys +import pprint + +pp = pprint.PrettyPrinter(indent=4) + +prefix = sys.argv[1] + +state_types = dict() +blocks = list() +ids = dict() + +def rewrite_cpp(s): + t = list() + i = 0 + while i < len(s): + if s[i] in ("'", '"') and i + 1 < len(s): + j = i + 1 + while j + 1 < len(s) and s[j] != s[i]: + if s[j] == '\\' and j + 1 < len(s): + j += 1 + j += 1 + t.append(s[i:j+1]) + i = j + 1 + continue + + if s[i] in ('$', '\\') and i + 1 < len(s): + j = i + 1 + while True: + if j == len(s): + j -= 1 + break + if ord('a') <= ord(s[j]) <= ord('z'): + j += 1 + continue + if ord('A') <= ord(s[j]) <= ord('Z'): + j += 1 + continue + if ord('0') <= ord(s[j]) <= ord('9'): + j += 1 + continue + if s[j] == '_': + j += 1 + continue + j -= 1 + break + + n = s[i:j+1] + i = j + 1 + + if n[0] == '$': + v = "id_d_" + n[1:] + else: + v = "id_b_" + n[1:] + + if v not in ids: + ids[v] = n + else: + assert ids[v] == n + + t.append(v) + continue + + if s[i] == "\t": + t.append(" ") + else: + t.append(s[i]) + + i += 1 + + return "".join(t) + +with open("%s.pmg" % prefix, "r") as f: + while True: + line = f.readline() + if line == "": break + line = line.strip() + + cmd = line.split() + if len(cmd) == 0: continue + cmd = cmd[0] + + if cmd == "state": + m = re.match(r"^state\s+<(.*?)>\s+(([A-Za-z_][A-Za-z_0-9]*\s+)*[A-Za-z_][A-Za-z_0-9]*)\s*$", line) + assert m + type_str = m.group(1) + states_str = m.group(2) + for s in re.split(r"\s+", states_str): + assert s not in state_types + state_types[s] = type_str + continue + + if cmd == "match": + block = dict() + block["type"] = "match" + + line = line.split() + assert len(line) == 2 + assert line[1] not in state_types + block["cell"] = line[1] + state_types[line[1]] = "Cell*"; + + block["select"] = list() + block["filter"] = list() + block["optional"] = False + + while True: + l = f.readline() + assert l != "" + a = l.split() + if len(a) == 0: continue + if a[0] == "endmatch": break + + if a[0] == "select": + b = l.lstrip()[6:] + block["select"].append(rewrite_cpp(b.strip())) + continue + + if a[0] == "filter": + m = re.match(r"^\s*filter\s+<(.*?)>\s+(.*?)\s*===\s*(.*?)\s*$", l) + assert m + block["filter"].append((m.group(1), rewrite_cpp(m.group(2)), rewrite_cpp(m.group(3)))) + continue + + if a[0] == "optional": + block["optional"] = True + continue + + assert False + + blocks.append(block) + + if cmd == "code": + block = dict() + block["type"] = "code" + block["code"] = list() + block["states"] = set() + + for s in line.split()[1:]: + assert s in state_types + block["states"].add(s) + + while True: + l = f.readline() + assert l != "" + a = l.split() + if len(a) == 0: continue + if a[0] == "endcode": break + + block["code"].append(rewrite_cpp(l.rstrip())) + + blocks.append(block) + +# pp.pprint(blocks) + +with open("%s_pm.h" % prefix, "w") as f: + print("// Generated by pmgen.py from {}.pgm".format(prefix), file=f) + print("#include \"kernel/yosys.h\"", file=f) + print("#include \"kernel/sigtools.h\"", file=f) + print("YOSYS_NAMESPACE_BEGIN", file=f) + print("struct {}_pm {{".format(prefix), file=f) + print(" Module *module;", file=f) + print(" SigMap sigmap;", file=f) + print(" std::function<void(struct {}_pm*)> on_accept;".format(prefix), file=f) + print("", file=f) + + for index in range(len(blocks)): + block = blocks[index] + if block["type"] == "match": + index_types = list() + for filt in block["filter"]: + index_types.append(filt[0]) + print(" typedef std::tuple<{}> index_{}_key_type;".format(", ".join(index_types), index), file=f) + print(" dict<index_{}_key_type, vector<Cell*>> index_{};".format(index, index), file=f) + print(" pool<Cell*> blacklist;", file=f) + print("", file=f) + + print(" struct state_t {", file=f) + + for s, t in sorted(state_types.items()): + print(" {} {};".format(t, s), file=f) + print(" } st;", file=f) + print("", file=f) + + for v, n in sorted(ids.items()): + if n[0] == "\\": + print(" IdString {}{{\"\\{}\"}};".format(v, n), file=f) + else: + print(" IdString {}{{\"{}\"}};".format(v, n), file=f) + print("", file=f) + + print(" {}_pm(Module *module) :".format(prefix), file=f) + print(" module(module), sigmap(module) {", file=f) + print(" }", file=f) + + print("", file=f) + print(" void run(std::function<void(struct {}_pm*)> on_accept_f) {{".format(prefix), file=f) + print(" on_accept = on_accept_f;", file=f) + if len(blocks): + print(" block_0();", file=f) + print(" }", file=f) + + for index in range(len(blocks)): + block = blocks[index] + + print("", file=f) + print(" void block_{}() {{".format(index), file=f) + + const_st = set() + nonconst_st = set() + restore_st = set() + + for i in range(index): + if blocks[i]["type"] == "code": + for s in blocks[i]["states"]: + const_st.add(s) + elif blocks[i]["type"] == "match": + const_st.add(blocks[i]["cell"]) + else: + assert False + + if block["type"] == "code": + for s in block["states"]: + if s in const_st: + const_st.remove(s) + restore_st.add(s) + nonconst_st.add(s) + elif block["type"] == "match": + s = block["cell"] + assert s not in const_st + nonconst_st.add(s) + else: + assert False + + for s in sorted(const_st): + t = state_types[s] + if t.endswith("*"): + print(" {} const &{} YS_ATTRIBUTE(unused) = st.{};".format(t, s, s), file=f) + else: + print(" const {} &{} YS_ATTRIBUTE(unused) = st.{};".format(t, s, s), file=f) + + for s in sorted(nonconst_st): + t = state_types[s] + print(" {} &{} YS_ATTRIBUTE(unused) = st.{};".format(t, s, s), file=f) + + if len(restore_st): + print("", file=f) + for s in sorted(restore_st): + t = state_types[s] + print(" {} backup_{} = st.{};".format(t, s, s), file=f) + + if len(restore_st): + print("", file=f) + for s in sorted(restore_st): + t = state_types[s] + print(" st.{} = backup_{};".format(s, s), file=f) + + print(" }", file=f) + + print("};\nYOSYS_NAMESPACE_END", file=f) |