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