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#define MGBA_EXPORT
 22#include <mgba/flags.h>
 23#define OPAQUE_THREADING
 24#include <mgba/core/blip_buf.h>
 25#include <mgba/core/cache-set.h>
 26#include <mgba-util/common.h>
 27#include <mgba/core/core.h>
 28#include <mgba/core/map-cache.h>
 29#include <mgba/core/log.h>
 30#include <mgba/core/mem-search.h>
 31#include <mgba/core/thread.h>
 32#include <mgba/core/version.h>
 33#include <mgba/debugger/debugger.h>
 34#include <mgba/gba/interface.h>
 35#include <mgba/internal/arm/arm.h>
 36#include <mgba/internal/debugger/cli-debugger.h>
 37#include <mgba/internal/gba/gba.h>
 38#include <mgba/internal/gba/input.h>
 39#include <mgba/internal/gba/renderers/cache-set.h>
 40#include <mgba/internal/sm83/sm83.h>
 41#include <mgba/internal/gb/gb.h>
 42#include <mgba/internal/gb/renderers/cache-set.h>
 43#include <mgba-util/png-io.h>
 44#include <mgba-util/vfs.h>
 45
 46#define PYEXPORT
 47#include "platform/python/core.h"
 48#include "platform/python/log.h"
 49#include "platform/python/sio.h"
 50#include "platform/python/vfs-py.h"
 51#undef PYEXPORT
 52""", include_dirs=[incdir, srcdir],
 53     extra_compile_args=cppflags,
 54     libraries=["mgba"],
 55     library_dirs=[bindir],
 56     runtime_library_dirs=[libdir],
 57     sources=[os.path.join(pydir, path) for path in ["vfs-py.c", "core.c", "log.c", "sio.c"]])
 58
 59preprocessed = subprocess.check_output(cpp + ["-fno-inline", "-P"] + cppflags + [os.path.join(pydir, "_builder.h")], universal_newlines=True)
 60
 61lines = []
 62for line in preprocessed.splitlines():
 63    line = line.strip()
 64    if line.startswith('#'):
 65        continue
 66    lines.append(line)
 67ffi.cdef('\n'.join(lines))
 68
 69preprocessed = subprocess.check_output(cpp + ["-fno-inline", "-P"] + cppflags + [os.path.join(pydir, "lib.h")], universal_newlines=True)
 70
 71lines = []
 72for line in preprocessed.splitlines():
 73    line = line.strip()
 74    if line.startswith('#'):
 75        continue
 76    lines.append(line)
 77ffi.embedding_api('\n'.join(lines))
 78
 79ffi.embedding_init_code("""
 80    import os, os.path
 81    from mgba._pylib import ffi, lib
 82    symbols = {}
 83    globalSyms = {
 84        'symbols': symbols
 85    }
 86    pendingCode = []
 87
 88    @ffi.def_extern()
 89    def mPythonSetDebugger(debugger):
 90        from mgba.debugger import NativeDebugger, CLIDebugger
 91        oldDebugger = globalSyms.get('debugger')
 92        if oldDebugger and oldDebugger._native == debugger:
 93            return
 94        if oldDebugger and not debugger:
 95            del globalSyms['debugger']
 96            return
 97        if debugger.type == lib.DEBUGGER_CLI:
 98            debugger = CLIDebugger(debugger)
 99        else:
100            debugger = NativeDebugger(debugger)
101        globalSyms['debugger'] = debugger
102
103    @ffi.def_extern()
104    def mPythonLoadScript(name, vf):
105        from mgba.vfs import VFile
106        vf = VFile(vf)
107        name = ffi.string(name)
108        source = vf.read_all().decode('utf-8')
109        try:
110            code = compile(source, name, 'exec')
111            pendingCode.append(code)
112        except:
113            return False
114        return True
115
116    @ffi.def_extern()
117    def mPythonRunPending():
118        global pendingCode
119        for code in pendingCode:
120            exec(code, globalSyms, {})
121        pendingCode = []
122
123    @ffi.def_extern()
124    def mPythonDebuggerEntered(reason, info):
125        debugger = globalSyms['debugger']
126        if not debugger:
127            return
128        if info == ffi.NULL:
129            info = None
130        for cb in debugger._cbs:
131            cb(reason, info)
132
133    @ffi.def_extern()
134    def mPythonLookupSymbol(name, outptr):
135        name = ffi.string(name).decode('utf-8')
136        if name not in symbols:
137            return False
138        sym = symbols[name]
139        val = None
140        try:
141            val = int(sym)
142        except:
143            try:
144                val = sym()
145            except:
146                pass
147        if val is None:
148            return False
149        try:
150            outptr[0] = ffi.cast('int32_t', val)
151            return True
152        except:
153            return False
154""")
155
156if __name__ == "__main__":
157    ffi.emit_c_code("lib.c")