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gh-105481: expose opcode metadata via the _opcode module (#106688)

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Irit Katriel 2023-07-14 18:41:52 +01:00 • committed by GitHub
parent 243fdcb40e
commit 6a70edf24c
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9 changed files with 558 additions and 21 deletions
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32
Tools/cases_generator/generate_cases.py
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@ -308,7 +308,7 @@ class InstructionFlags:
for name, value in flags.bitmask.items():
out.emit(
f"#define OPCODE_{name[:-len('_FLAG')]}(OP) "
f"(_PyOpcode_opcode_metadata[(OP)].flags & ({name}))")
f"(_PyOpcode_opcode_metadata[OP].flags & ({name}))")
@dataclasses.dataclass
@ -1192,6 +1192,8 @@ class Analyzer:
self.write_provenance_header()
self.out.emit("\n#include <stdbool.h>")
self.write_pseudo_instrs()
self.out.emit("")
@ -1202,8 +1204,16 @@ class Analyzer:
# Write type definitions
self.out.emit(f"enum InstructionFormat {{ {', '.join(format_enums)} }};")
self.out.emit("")
self.out.emit(
"#define IS_VALID_OPCODE(OP) \\\n"
" (((OP) >= 0) && ((OP) < OPCODE_METADATA_SIZE) && \\\n"
" (_PyOpcode_opcode_metadata[(OP)].valid_entry))")
self.out.emit("")
InstructionFlags.emit_macros(self.out)
self.out.emit("")
with self.out.block("struct opcode_metadata", ";"):
self.out.emit("bool valid_entry;")
self.out.emit("enum InstructionFormat instr_format;")
@ -1226,13 +1236,20 @@ class Analyzer:
self.out.emit("")
# Write metadata array declaration
self.out.emit("#define OPCODE_METADATA_SIZE 512")
self.out.emit("#define OPCODE_UOP_NAME_SIZE 512")
self.out.emit("#define OPCODE_MACRO_EXPANSION_SIZE 256")
self.out.emit("")
self.out.emit("#ifndef NEED_OPCODE_METADATA")
self.out.emit("extern const struct opcode_metadata _PyOpcode_opcode_metadata[512];")
self.out.emit("extern const struct opcode_macro_expansion _PyOpcode_macro_expansion[256];")
self.out.emit("extern const char * const _PyOpcode_uop_name[512];")
self.out.emit("extern const struct opcode_metadata "
"_PyOpcode_opcode_metadata[OPCODE_METADATA_SIZE];")
self.out.emit("extern const struct opcode_macro_expansion "
"_PyOpcode_macro_expansion[OPCODE_MACRO_EXPANSION_SIZE];")
self.out.emit("extern const char * const _PyOpcode_uop_name[OPCODE_UOP_NAME_SIZE];")
self.out.emit("#else // if NEED_OPCODE_METADATA")
self.out.emit("const struct opcode_metadata _PyOpcode_opcode_metadata[512] = {")
self.out.emit("const struct opcode_metadata "
"_PyOpcode_opcode_metadata[OPCODE_METADATA_SIZE] = {")
# Write metadata for each instruction
for thing in self.everything:
@ -1253,7 +1270,8 @@ class Analyzer:
self.out.emit("};")
with self.out.block(
"const struct opcode_macro_expansion _PyOpcode_macro_expansion[256] =",
"const struct opcode_macro_expansion "
"_PyOpcode_macro_expansion[OPCODE_MACRO_EXPANSION_SIZE] =",
";",
):
# Write macro expansion for each non-pseudo instruction
@ -1279,7 +1297,7 @@ class Analyzer:
case _:
typing.assert_never(thing)
with self.out.block("const char * const _PyOpcode_uop_name[512] =", ";"):
with self.out.block("const char * const _PyOpcode_uop_name[OPCODE_UOP_NAME_SIZE] =", ";"):
self.write_uop_items(lambda name, counter: f"[{name}] = \"{name}\",")
self.out.emit("#endif // NEED_OPCODE_METADATA")