128 lines
2.8 KiB
Python
128 lines
2.8 KiB
Python
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#!/usr/bin/env python3
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import sys
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if len(sys.argv) < 2:
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print("bindgen require an api name\n")
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exit(-1);
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apiName = sys.argv[1]
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cdir = ''
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if len(sys.argv) > 2:
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cdir = sys.argv[2]
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inPath = cdir + '/bindgen_' + apiName + '_api.txt'
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outPath = cdir + '/bindgen_' + apiName + '_api.c'
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inFile = open(inPath, 'r')
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outFile = open(outPath, 'w')
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stubs = []
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links = []
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def gen_stub(name, sig):
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src = 'const void* ' + name + '_stub(IM3Runtime runtime, IM3ImportContext _ctx, uint64_t * _sp, void * _mem)\n'
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src += '{\n'
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spIndex = 0
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parsingRet = True
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retCount = 0
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argCount = 0
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retString = ''
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argString = ''
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for index, c in enumerate(sig):
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if parsingRet:
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if retCount > 1:
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print('unsupported multiple return types\n')
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break
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if c == '(':
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parsingRet = False
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continue
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elif c == ')':
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print('unexpected ) while parsing return type\n')
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break;
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elif c == 'v':
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continue
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elif c == 'i':
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retString = '*((i32*)&_sp[0]) = '
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elif c == 'I':
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retString = '*((i64*)&_sp[0]) = '
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elif c == 'f':
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retString = '*((f32*)&_sp[0]) = '
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elif c == 'd':
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retString = '*((f64*)&_sp[0]) = '
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elif c == 'p':
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print('returning pointers is not supported yet\n')
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break
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else:
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print('unrecognized type ' + c + ' in procedure signature\n')
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break
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retCount += 1
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else:
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argIndex = argCount + retCount
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if c == ')':
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break
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elif c == 'v':
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break
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elif c == 'i':
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argString += '*(i32*)&_sp[' + str(argIndex) + ']'
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elif c == 'I':
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argString += '*(i64*)&_sp[' + str(argIndex) + ']'
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elif c == 'f':
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argString += '*(f32*)&_sp[' + str(argIndex) + ']'
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elif c == 'd':
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argString += '*(f64*)&_sp[' + str(argIndex) + ']'
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elif c == 'p':
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argString += '(void*)((char*)_mem + *(i32*)&_sp[' + str(argIndex) + '])'
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else:
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print('unrecognized type ' + c + ' in procedure signature\n')
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break
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if index+2 < len(sig):
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argString += ', '
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argCount += 1
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src += '\t' + retString + name + '(' + argString + ');\n'
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src += '\treturn(0);\n'
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src += '}\n'
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stubs.append(src)
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def gen_link(name, sig):
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m3_Sig = ''
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for c in sig:
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if c == 'p':
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m3_Sig += 'i'
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else:
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m3_Sig += c
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src = '\tres = m3_LinkRawFunction(module, "*", "' + name + '", "' + m3_Sig + '", ' + name + '_stub);\n'
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src += '\tif(res != m3Err_none && res != m3Err_functionLookupFailed) { LOG_ERROR("error: %s\\n", res); return(-1); }\n\n'
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links.append(src)
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for line in inFile:
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if line.isspace():
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continue
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desc = line.split()
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gen_stub(desc[0], desc[1])
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gen_link(desc[0], desc[1])
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linkProc = 'int bindgen_link_' + apiName + '_api(IM3Module module)\n'
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linkProc += '{\n'
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linkProc += '\tM3Result res;\n'
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for link in links:
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linkProc += link
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linkProc += '\treturn(0);\n'
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linkProc += '}\n'
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for stub in stubs:
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outFile.write(stub)
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outFile.write('\n')
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outFile.write(linkProc)
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inFile.close()
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outFile.close()
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