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39bf41f4eb
- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands
115 lines
4 KiB
C
115 lines
4 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 "libc/calls/weirdtypes.h"
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#include "libc/runtime/dlfcn.h"
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#include "third_party/python/Include/fileutils.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/pystate.h"
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#include "third_party/python/Python/importdl.h"
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/* clang-format off */
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#if (defined(__OpenBSD__) || defined(__NetBSD__)) && !defined(__ELF__)
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#define LEAD_UNDERSCORE "_"
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#else
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#define LEAD_UNDERSCORE ""
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#endif
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/* The .so extension module ABI tag, supplied by the Makefile via
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Makefile.pre.in and configure. This is used to discriminate between
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incompatible .so files so that extensions for different Python builds can
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live in the same directory. E.g. foomodule.cpython-32.so
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*/
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const char *_PyImport_DynLoadFiletab[] = {
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#ifdef __CYGWIN__
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".dll",
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#else /* !__CYGWIN__ */
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"." SOABI ".so",
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".abi" PYTHON_ABI_STRING ".so",
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".so",
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#endif /* __CYGWIN__ */
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NULL,
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};
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static struct {
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dev_t dev;
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ino_t ino;
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void *handle;
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} handles[128];
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static int nhandles = 0;
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dl_funcptr
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_PyImport_FindSharedFuncptr(const char *prefix,
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const char *shortname,
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const char *pathname, FILE *fp)
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{
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dl_funcptr p;
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void *handle;
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char funcname[258];
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char pathbuf[260];
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int dlopenflags=0;
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if (strchr(pathname, '/') == NULL) {
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/* Prefix bare filename with "./" */
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PyOS_snprintf(pathbuf, sizeof(pathbuf), "./%-.255s", pathname);
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pathname = pathbuf;
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}
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PyOS_snprintf(funcname, sizeof(funcname),
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LEAD_UNDERSCORE "%.20s_%.200s", prefix, shortname);
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if (fp != NULL) {
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int i;
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struct _Py_stat_struct status;
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if (_Py_fstat(fileno(fp), &status) == -1)
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return NULL;
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for (i = 0; i < nhandles; i++) {
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if (status.st_dev == handles[i].dev &&
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status.st_ino == handles[i].ino) {
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p = (dl_funcptr) dlsym(handles[i].handle,
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funcname);
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return p;
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}
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}
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if (nhandles < 128) {
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handles[nhandles].dev = status.st_dev;
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handles[nhandles].ino = status.st_ino;
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}
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}
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dlopenflags = PyThreadState_GET()->interp->dlopenflags;
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handle = dlopen(pathname, dlopenflags);
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if (handle == NULL) {
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PyObject *mod_name;
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PyObject *path;
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PyObject *error_ob;
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const char *error = dlerror();
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if (error == NULL)
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error = "unknown dlopen() error";
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error_ob = PyUnicode_FromString(error);
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if (error_ob == NULL)
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return NULL;
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mod_name = PyUnicode_FromString(shortname);
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if (mod_name == NULL) {
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Py_DECREF(error_ob);
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return NULL;
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}
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path = PyUnicode_FromString(pathname);
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if (path == NULL) {
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Py_DECREF(error_ob);
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Py_DECREF(mod_name);
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return NULL;
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}
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PyErr_SetImportError(error_ob, mod_name, path);
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Py_DECREF(error_ob);
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Py_DECREF(mod_name);
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Py_DECREF(path);
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return NULL;
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}
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if (fp != NULL && nhandles < 128)
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handles[nhandles++].handle = handle;
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p = (dl_funcptr) dlsym(handle, funcname);
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return p;
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}
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