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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.
100 lines
3.1 KiB
C
100 lines
3.1 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/compile.h"
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#include "third_party/python/Include/import.h"
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#include "third_party/python/Include/longobject.h"
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#include "third_party/python/Include/modsupport.h"
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#include "third_party/python/Include/object.h"
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#include "third_party/python/Include/opcode.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/yoink.h"
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/* clang-format off */
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PYTHON_PROVIDE("_opcode");
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PYTHON_PROVIDE("_opcode.stack_effect");
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/*[clinic input]
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module _opcode
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[clinic start generated code]*/
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/*[clinic end generated code: output=da39a3ee5e6b4b0d input=117442e66eb376e6]*/
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#include "third_party/python/Modules/clinic/_opcode.inc"
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/*[clinic input]
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_opcode.stack_effect -> int
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opcode: int
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oparg: object = None
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/
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Compute the stack effect of the opcode.
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[clinic start generated code]*/
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static int
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_opcode_stack_effect_impl(PyObject *module, int opcode, PyObject *oparg)
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/*[clinic end generated code: output=ad39467fa3ad22ce input=2d0a9ee53c0418f5]*/
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{
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int effect;
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int oparg_int = 0;
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if (HAS_ARG(opcode)) {
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if (oparg == Py_None) {
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PyErr_SetString(PyExc_ValueError,
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"stack_effect: opcode requires oparg but oparg was not specified");
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return -1;
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}
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oparg_int = (int)PyLong_AsLong(oparg);
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if ((oparg_int == -1) && PyErr_Occurred())
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return -1;
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}
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else if (oparg != Py_None) {
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PyErr_SetString(PyExc_ValueError,
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"stack_effect: opcode does not permit oparg but oparg was specified");
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return -1;
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}
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effect = PyCompile_OpcodeStackEffect(opcode, oparg_int);
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if (effect == PY_INVALID_STACK_EFFECT) {
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PyErr_SetString(PyExc_ValueError,
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"invalid opcode or oparg");
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return -1;
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}
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return effect;
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}
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static PyMethodDef
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opcode_functions[] = {
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_OPCODE_STACK_EFFECT_METHODDEF
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{NULL, NULL, 0, NULL}
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};
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static struct PyModuleDef opcodemodule = {
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PyModuleDef_HEAD_INIT,
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"_opcode",
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"Opcode support module.",
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-1,
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opcode_functions,
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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__opcode(void)
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{
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return PyModule_Create(&opcodemodule);
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}
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_Section(".rodata.pytab.1") const struct _inittab _PyImport_Inittab__opcode = {
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"_opcode",
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PyInit__opcode,
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};
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