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