1import cffi
  2import os, os.path
  3import shlex
  4import subprocess
  5import sys
  6
  7ffi = cffi.FFI()
  8pydir = os.path.dirname(os.path.abspath(__file__))
  9srcdir = os.path.join(pydir, "..", "..")
 10incdir = os.path.join(pydir, "..", "..", "..", "include")
 11bindir = os.environ.get("BINDIR", os.path.join(os.getcwd(), ".."))
 12libdir = os.environ.get("LIBDIR")
 13
 14cpp = shlex.split(os.environ.get("CPP", "cc -E"))
 15cppflags = shlex.split(os.environ.get("CPPFLAGS", ""))
 16cppflags.extend(["-I" + incdir, "-I" + srcdir, "-I" + bindir])
 17
 18ffi.set_source("mgba._pylib", """
 19#define static
 20#define inline
 21#include "flags.h"
 22#define OPAQUE_THREADING
 23#include <mgba/core/cache-set.h>
 24#include <mgba-util/common.h>
 25#include <mgba/core/core.h>
 26#include <mgba/core/map-cache.h>
 27#include <mgba/core/log.h>
 28#include <mgba/core/mem-search.h>
 29#include <mgba/core/thread.h>
 30#include <mgba/core/version.h>
 31#include <mgba/debugger/debugger.h>
 32#include <mgba/gba/interface.h>
 33#include <mgba/internal/arm/arm.h>
 34#include <mgba/internal/debugger/cli-debugger.h>
 35#include <mgba/internal/gba/gba.h>
 36#include <mgba/internal/gba/input.h>
 37#include <mgba/internal/gba/renderers/cache-set.h>
 38#include <mgba/internal/lr35902/lr35902.h>
 39#include <mgba/internal/gb/gb.h>
 40#include <mgba/internal/gb/renderers/cache-set.h>
 41#include <mgba-util/png-io.h>
 42#include <mgba-util/vfs.h>
 43
 44#define PYEXPORT
 45#include "platform/python/core.h"
 46#include "platform/python/log.h"
 47#include "platform/python/sio.h"
 48#include "platform/python/vfs-py.h"
 49#undef PYEXPORT
 50""", include_dirs=[incdir, srcdir],
 51     extra_compile_args=cppflags,
 52     libraries=["mgba"],
 53     library_dirs=[bindir],
 54     runtime_library_dirs=[libdir],
 55     sources=[os.path.join(pydir, path) for path in ["vfs-py.c", "core.c", "log.c", "sio.c"]])
 56
 57preprocessed = subprocess.check_output(cpp + ["-fno-inline", "-P"] + cppflags + [os.path.join(pydir, "_builder.h")], universal_newlines=True)
 58
 59lines = []
 60for line in preprocessed.splitlines():
 61    line = line.strip()
 62    if line.startswith('#'):
 63        continue
 64    lines.append(line)
 65ffi.cdef('\n'.join(lines))
 66
 67preprocessed = subprocess.check_output(cpp + ["-fno-inline", "-P"] + cppflags + [os.path.join(pydir, "lib.h")], universal_newlines=True)
 68
 69lines = []
 70for line in preprocessed.splitlines():
 71    line = line.strip()
 72    if line.startswith('#'):
 73        continue
 74    lines.append(line)
 75ffi.embedding_api('\n'.join(lines))
 76
 77ffi.embedding_init_code("""
 78    import os, os.path
 79    from mgba._pylib import ffi, lib
 80    symbols = {}
 81    globalSyms = {
 82        'symbols': symbols
 83    }
 84    pendingCode = []
 85
 86    @ffi.def_extern()
 87    def mPythonSetDebugger(debugger):
 88        from mgba.debugger import NativeDebugger, CLIDebugger
 89        oldDebugger = globalSyms.get('debugger')
 90        if oldDebugger and oldDebugger._native == debugger:
 91            return
 92        if oldDebugger and not debugger:
 93            del globalSyms['debugger']
 94            return
 95        if debugger.type == lib.DEBUGGER_CLI:
 96            debugger = CLIDebugger(debugger)
 97        else:
 98            debugger = NativeDebugger(debugger)
 99        globalSyms['debugger'] = debugger
100
101    @ffi.def_extern()
102    def mPythonLoadScript(name, vf):
103        from mgba.vfs import VFile
104        vf = VFile(vf)
105        name = ffi.string(name)
106        source = vf.read_all().decode('utf-8')
107        try:
108            code = compile(source, name, 'exec')
109            pendingCode.append(code)
110        except:
111            return False
112        return True
113
114    @ffi.def_extern()
115    def mPythonRunPending():
116        global pendingCode
117        for code in pendingCode:
118            exec(code, globalSyms, {})
119        pendingCode = []
120
121    @ffi.def_extern()
122    def mPythonDebuggerEntered(reason, info):
123        debugger = globalSyms['debugger']
124        if not debugger:
125            return
126        if info == ffi.NULL:
127            info = None
128        for cb in debugger._cbs:
129            cb(reason, info)
130
131    @ffi.def_extern()
132    def mPythonLookupSymbol(name, outptr):
133        name = ffi.string(name).decode('utf-8')
134        if name not in symbols:
135            return False
136        sym = symbols[name]
137        val = None
138        try:
139            val = int(sym)
140        except:
141            try:
142                val = sym()
143            except:
144                pass
145        if val is None:
146            return False
147        try:
148            outptr[0] = ffi.cast('int32_t', val)
149            return True
150        except:
151            return False
152""")
153
154if __name__ == "__main__":
155    ffi.emit_c_code("lib.c")