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/ds/ds.h>
 38#include <mgba/internal/ds/input.h>
 39#include <mgba/internal/gba/gba.h>
 40#include <mgba/internal/gba/input.h>
 41#include <mgba/internal/gba/renderers/cache-set.h>
 42#include <mgba/internal/sm83/sm83.h>
 43#include <mgba/internal/gb/gb.h>
 44#include <mgba/internal/gb/renderers/cache-set.h>
 45#include <mgba-util/png-io.h>
 46#include <mgba-util/vfs.h>
 47
 48#define PYEXPORT
 49#include "platform/python/core.h"
 50#include "platform/python/log.h"
 51#include "platform/python/sio.h"
 52#include "platform/python/vfs-py.h"
 53#undef PYEXPORT
 54""", include_dirs=[incdir, srcdir],
 55     extra_compile_args=cppflags,
 56     libraries=["medusa-emu"],
 57     library_dirs=[bindir],
 58     runtime_library_dirs=[libdir],
 59     sources=[os.path.join(pydir, path) for path in ["vfs-py.c", "core.c", "log.c", "sio.c"]])
 60
 61preprocessed = subprocess.check_output(cpp + ["-fno-inline", "-P"] + cppflags + [os.path.join(pydir, "_builder.h")], universal_newlines=True)
 62
 63lines = []
 64for line in preprocessed.splitlines():
 65    line = line.strip()
 66    if line.startswith('#'):
 67        continue
 68    lines.append(line)
 69ffi.cdef('\n'.join(lines))
 70
 71ffi.cdef("""
 72struct GBARTC {
 73    int32_t bytesRemaining;
 74    int32_t transferStep;
 75    int32_t bitsRead;
 76    int32_t bits;
 77    uint8_t commandActive;
 78    uint8_t alarm1[3];
 79    RTCCommandData command;
 80    RTCStatus2 status2;
 81    uint8_t freeReg;
 82    RTCControl control;
 83    uint8_t alarm2[3];
 84    uint8_t time[7];
 85};""", packed=True)
 86
 87preprocessed = subprocess.check_output(cpp + ["-fno-inline", "-P"] + cppflags + [os.path.join(pydir, "lib.h")], universal_newlines=True)
 88
 89lines = []
 90for line in preprocessed.splitlines():
 91    line = line.strip()
 92    if line.startswith('#'):
 93        continue
 94    lines.append(line)
 95ffi.embedding_api('\n'.join(lines))
 96
 97ffi.embedding_init_code("""
 98    import os, os.path
 99    from mgba._pylib import ffi, lib
100    symbols = {}
101    globalSyms = {
102        'symbols': symbols
103    }
104    pendingCode = []
105
106    @ffi.def_extern()
107    def mPythonSetDebugger(debugger):
108        from mgba.debugger import NativeDebugger, CLIDebugger
109        oldDebugger = globalSyms.get('debugger')
110        if oldDebugger and oldDebugger._native == debugger:
111            return
112        if oldDebugger and not debugger:
113            del globalSyms['debugger']
114            return
115        if debugger.type == lib.DEBUGGER_CLI:
116            debugger = CLIDebugger(debugger)
117        else:
118            debugger = NativeDebugger(debugger)
119        globalSyms['debugger'] = debugger
120
121    @ffi.def_extern()
122    def mPythonLoadScript(name, vf):
123        from mgba.vfs import VFile
124        vf = VFile(vf)
125        name = ffi.string(name)
126        source = vf.read_all().decode('utf-8')
127        try:
128            code = compile(source, name, 'exec')
129            pendingCode.append(code)
130        except:
131            return False
132        return True
133
134    @ffi.def_extern()
135    def mPythonRunPending():
136        global pendingCode
137        for code in pendingCode:
138            exec(code, globalSyms, {})
139        pendingCode = []
140
141    @ffi.def_extern()
142    def mPythonDebuggerEntered(reason, info):
143        debugger = globalSyms['debugger']
144        if not debugger:
145            return
146        if info == ffi.NULL:
147            info = None
148        for cb in debugger._cbs:
149            cb(reason, info)
150
151    @ffi.def_extern()
152    def mPythonLookupSymbol(name, outptr):
153        name = ffi.string(name).decode('utf-8')
154        if name not in symbols:
155            return False
156        sym = symbols[name]
157        val = None
158        try:
159            val = int(sym)
160        except:
161            try:
162                val = sym()
163            except:
164                pass
165        if val is None:
166            return False
167        try:
168            outptr[0] = ffi.cast('int32_t', val)
169            return True
170        except:
171            return False
172""")
173
174if __name__ == "__main__":
175    ffi.emit_c_code("lib.c")