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https://github.com/jart/cosmopolitan.git
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559b024e1d
We can now link even smaller Python binaries. For example, the hello.com program in the Python build directory is a compiled linked executable of hello.py which just prints hello world. Using decentralized sections, we can make that binary 1.9mb in size (noting that python.com is 6.3 megs!) This works for nontrivial programs too. For example, say we want an APE binary that's equivalent to python.com -m http.server. Our makefile now builds such a binary using the new launcher and it's only 3.2mb in size since Python sources get turned into ELF objects, which tell our linker that we need things like native hashing algorithm code.
141 lines
4.7 KiB
C
141 lines
4.7 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=4 sts=4 sw=4 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Python 3 │
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│ https://docs.python.org/3/license.html │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "third_party/python/Include/Python-ast.h"
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#include "third_party/python/Include/code.h"
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#include "third_party/python/Include/import.h"
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#include "third_party/python/Include/modsupport.h"
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#include "third_party/python/Include/pyerrors.h"
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#include "third_party/python/Include/pymacro.h"
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#include "third_party/python/Include/pymem.h"
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#include "third_party/python/Include/symtable.h"
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#include "third_party/python/Include/unicodeobject.h"
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#include "third_party/python/Include/yoink.h"
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/* clang-format off */
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PYTHON_PROVIDE("_symtable");
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PYTHON_PROVIDE("_symtable.CELL");
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PYTHON_PROVIDE("_symtable.DEF_ANNOT");
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PYTHON_PROVIDE("_symtable.DEF_BOUND");
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PYTHON_PROVIDE("_symtable.DEF_FREE");
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PYTHON_PROVIDE("_symtable.DEF_FREE_CLASS");
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PYTHON_PROVIDE("_symtable.DEF_GLOBAL");
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PYTHON_PROVIDE("_symtable.DEF_IMPORT");
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PYTHON_PROVIDE("_symtable.DEF_LOCAL");
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PYTHON_PROVIDE("_symtable.DEF_PARAM");
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PYTHON_PROVIDE("_symtable.FREE");
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PYTHON_PROVIDE("_symtable.GLOBAL_EXPLICIT");
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PYTHON_PROVIDE("_symtable.GLOBAL_IMPLICIT");
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PYTHON_PROVIDE("_symtable.LOCAL");
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PYTHON_PROVIDE("_symtable.SCOPE_MASK");
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PYTHON_PROVIDE("_symtable.SCOPE_OFF");
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PYTHON_PROVIDE("_symtable.TYPE_CLASS");
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PYTHON_PROVIDE("_symtable.TYPE_FUNCTION");
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PYTHON_PROVIDE("_symtable.TYPE_MODULE");
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PYTHON_PROVIDE("_symtable.USE");
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PYTHON_PROVIDE("_symtable.symtable");
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static PyObject *
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symtable_symtable(PyObject *self, PyObject *args)
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{
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struct symtable *st;
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PyObject *t;
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char *str;
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PyObject *filename;
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char *startstr;
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int start;
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if (!PyArg_ParseTuple(args, "sO&s:symtable",
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&str, PyUnicode_FSDecoder, &filename, &startstr))
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return NULL;
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if (strcmp(startstr, "exec") == 0)
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start = Py_file_input;
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else if (strcmp(startstr, "eval") == 0)
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start = Py_eval_input;
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else if (strcmp(startstr, "single") == 0)
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start = Py_single_input;
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else {
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PyErr_SetString(PyExc_ValueError,
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"symtable() arg 3 must be 'exec' or 'eval' or 'single'");
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Py_DECREF(filename);
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return NULL;
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}
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st = Py_SymtableStringObject(str, filename, start);
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Py_DECREF(filename);
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if (st == NULL)
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return NULL;
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t = (PyObject *)st->st_top;
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Py_INCREF(t);
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PyMem_Free((void *)st->st_future);
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PySymtable_Free(st);
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return t;
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}
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static PyMethodDef symtable_methods[] = {
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{"symtable", symtable_symtable, METH_VARARGS,
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PyDoc_STR("Return symbol and scope dictionaries"
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" used internally by compiler.")},
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{NULL, NULL} /* sentinel */
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};
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static struct PyModuleDef symtablemodule = {
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PyModuleDef_HEAD_INIT,
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"_symtable",
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NULL,
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-1,
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symtable_methods,
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NULL,
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NULL,
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NULL,
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NULL
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};
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PyMODINIT_FUNC
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PyInit__symtable(void)
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{
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PyObject *m;
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if (PyType_Ready(&PySTEntry_Type) < 0)
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return NULL;
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m = PyModule_Create(&symtablemodule);
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if (m == NULL)
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return NULL;
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PyModule_AddIntMacro(m, USE);
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PyModule_AddIntMacro(m, DEF_GLOBAL);
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PyModule_AddIntMacro(m, DEF_LOCAL);
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PyModule_AddIntMacro(m, DEF_PARAM);
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PyModule_AddIntMacro(m, DEF_FREE);
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PyModule_AddIntMacro(m, DEF_FREE_CLASS);
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PyModule_AddIntMacro(m, DEF_IMPORT);
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PyModule_AddIntMacro(m, DEF_BOUND);
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PyModule_AddIntMacro(m, DEF_ANNOT);
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PyModule_AddIntConstant(m, "TYPE_FUNCTION", FunctionBlock);
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PyModule_AddIntConstant(m, "TYPE_CLASS", ClassBlock);
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PyModule_AddIntConstant(m, "TYPE_MODULE", ModuleBlock);
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PyModule_AddIntMacro(m, LOCAL);
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PyModule_AddIntMacro(m, GLOBAL_EXPLICIT);
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PyModule_AddIntMacro(m, GLOBAL_IMPLICIT);
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PyModule_AddIntMacro(m, FREE);
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PyModule_AddIntMacro(m, CELL);
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PyModule_AddIntConstant(m, "SCOPE_OFF", SCOPE_OFFSET);
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PyModule_AddIntMacro(m, SCOPE_MASK);
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if (PyErr_Occurred()) {
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Py_DECREF(m);
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m = 0;
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}
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return m;
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}
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_Section(".rodata.pytab.1") const struct _inittab _PyImport_Inittab__symtable = {
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"_symtable",
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PyInit__symtable,
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};
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