WO2008054074A1 - Dispositif terminal présentant une fonction d'interfaçage de bibliothèques de compilation en langages hétérogènes, procédé d'appel d'api et procédé de création d'une fonction de compilation - Google Patents

Dispositif terminal présentant une fonction d'interfaçage de bibliothèques de compilation en langages hétérogènes, procédé d'appel d'api et procédé de création d'une fonction de compilation Download PDF

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Publication number
WO2008054074A1
WO2008054074A1 PCT/KR2007/005036 KR2007005036W WO2008054074A1 WO 2008054074 A1 WO2008054074 A1 WO 2008054074A1 KR 2007005036 W KR2007005036 W KR 2007005036W WO 2008054074 A1 WO2008054074 A1 WO 2008054074A1
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WO
WIPO (PCT)
Prior art keywords
library
language
function
api
stub
Prior art date
Application number
PCT/KR2007/005036
Other languages
English (en)
Inventor
Jong Bae Kim
Hoo Jong Kim
Original Assignee
Sk Telecom Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sk Telecom Co., Ltd. filed Critical Sk Telecom Co., Ltd.
Publication of WO2008054074A1 publication Critical patent/WO2008054074A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • G06F8/40—Transformation of program code
    • G06F8/54—Link editing before load time
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/448—Execution paradigms, e.g. implementations of programming paradigms
    • G06F9/4482—Procedural
    • G06F9/4484—Executing subprograms
    • G06F9/4486—Formation of subprogram jump address
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/451—Execution arrangements for user interfaces
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones

Definitions

  • the present invention relates, in general, to a terminal device having a function of interfacing compilation libraries in heterogeneous languages, a method of calling an application program interface, and a method of creating a compile function, and, more particularly, to a terminal device having a function of interfacing compilation libraries in heterogeneous languages to be used when a function in C language calls a function in C++ language, a method of calling an application program interface, and a method of creating a compile function.
  • a terminal device of a mobile communication system includes an Original
  • OEM Equipment Manufacturer
  • WIPI Wireless Internet Platform for Interoperability
  • an application program interface is an interface that allows an application program to use functions of another program, such as a computer Operating System (OS) or a DataBase Management System (DBMS).
  • An application program interface is also called an application programming interface, and is generally abbreviated as an "API".
  • an API is a set of functions that defines functions of an OS and methods of using the functions.
  • An application program can use various functions of an OS using an API.
  • Such a platform generally creates library functions using a predetermined program language, for example, C or C++ language, and calls the API of the platform using the created library functions.
  • a predetermined program language for example, C or C++ language
  • FIG. 1 is a diagram showing a conventional terminal device having an API call function.
  • the conventional terminal device having an API call function includes Read-Only Memory (ROM) 71, Random Access Memory (RAM) 72, and a control unit 73.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • the ROM 71 is nonvolatile memory, and is divided into a Read Only (RO) region, a
  • RW Read Write
  • ZI Zero Initial
  • a library function table 70 in which the address values of the APIs of a library are recorded, is located in the RO region.
  • a phone Basic Input-Output System (BIOS) for the operation of a platform, and application programs are stored in the RW region in an embedded manner.
  • the RAM 72 is volatile memory.
  • the library function table 70 loaded from the ROM
  • the executable data of the phone BIOS and the application programs is loaded into the RW region of the RAM 72, and the size information of global variables, which have not been initialized, is loaded into the ZI region. Further, in the RAM 72, internally processed temporary data is processed in a heap region.
  • the control unit 73 loads a phone BIOS or an application program, set by a user, in the RW region of the RAM 72, searches the library function table 70, located in the RO region, for an API desired to be executed, and calls the corresponding API. Thereafter, the control unit 73 performs control using the API so that the functions of a platform, for example, an OEM platform or a WIPI platform, are executed.
  • a platform for example, an OEM platform or a WIPI platform
  • the library function table 70 includes libraries of functions written in the C language or the C++ language.
  • the control unit 73 of the terminal device 74 boots up.
  • the control unit 73 of the terminal device 74 loads all libraries related to the application program, from the ROM 71 into the RAM 72.
  • the application program may be, for example, a game present in the WIPI region or an application having a calculation function present in the OEM region.
  • the control unit 73 of the terminal device 74 loads the OS or an application, respectively, in the RAM 72.
  • the library function table 70 located in the RO region of the ROM 71 and written in the C language, is loaded into the RO region of the RAM 72, and an OS and application programs, located in the RW region of the ROM 71, are stored in image form, and then copied to the RW region of the RAM 72 at the same time that the booting or loading is executed, thus creating a RAM Disk.
  • the control unit 73 runs the OS and the application programs, for example, OEM or WIPI application programs, on the RAM disk.
  • the control unit 73 of the terminal device 74 searches the loaded library function table 70, which is located in the RO region of the RAM 72 and includes library functions written in the C language, for a library having the address value of the API desired to be executed. Further, when the address value of the corresponding API is acquired by searching the library function table 70, the control unit 73 links to the location of the corresponding API, calls the API, and performs the functions of a platform, for example, an OEM platform or a WIPI platform, using the called API.
  • a platform for example, an OEM platform or a WIPI platform
  • the library functions of the library function table to be loaded are generally written in the C language or the C++ language for object-oriented design and object-oriented implementation, depending on the library characteristics.
  • a library in the C language calls an API of a library in the C++ language
  • those libraries are not compatible with each other, and thus the API of the library in C++ language cannot be called. Therefore, the operation of the terminal device is unstable, and thus the operational stability of the terminal device is considerably deteriorated.
  • an object of the present invention is to provide a terminal device having a function of interfacing compilation libraries written in heterogeneous languages, which allows a library function, even a library function written in a different language, to call an API by searching a compile function table for the actual address value of the corresponding library function, a method of calling an API, and a method of creating a compile function.
  • Another object of the present invention is to provide a terminal device having a function of interfacing compilation libraries in heterogeneous languages, in which numeral function IDentifications (IDs) are assigned to function symbols acquired by compiling function names into C++ language, and then a compile function table is created, thereby rapidly acquiring the address value of an API requested by a function in the C language and linking to a location corresponding to the actual address of the API when the function written in the C language, that is, a different language, calls the corresponding API, a method of calling an API, and a method of creating a compile function.
  • IDs numeral function IDentifications
  • the present invention when a function in the C language calls a function in the C++ language, a compile function table, created in advance, is searched for the actual address value of a corresponding function, and a location corresponding to the actual address is linked. Therefore, the present invention has an advantage in that interfacing characteristics between platform functions in heterogeneous languages are considerably improved.
  • numeric function IDs are assigned to function symbols acquired by compiling function names into C++ language, and thus a compile function table is created. Therefore, when a function in the C language, that is, a different language, calls an API, the address value of the API requested by the function in the C language can be rapidly acquired, and the location corresponding to the actual address of the API can be rapidly linked to. Accordingly, there is an advantage in that the dynamic linking characteristics of a platform are considerably improved.
  • FIG. 1 is a diagram showing a conventional terminal device having an API call function
  • FIG. 2 is a diagram showing a terminal device having a function of interfacing compilation libraries in heterogeneous languages according to the present invention
  • FIG. 3 is a flowchart showing an interfacing method according to the present invention.
  • FIG. 4 is a flowchart showing a method of creating a compile function table according to the present invention. Best Mode for Carrying Out the Invention
  • the present invention provides a terminal device having the function of interfacing compilation libraries in heterogeneous languages, including a first storage medium for storing a library in the C++ language, which is provided with a compile function table having the C++ language-type address values of Application Program Interfaces (APIs), and a library in the C language, which has a stub associated with the compile function table, the first storage medium being nonvolatile memory; a second storage medium functioning as space into which the library in the C language, which has the stub, and the library in the C++ language, which is provided with the compile function table, are loaded when a platform stored in the first storage medium is loaded, the second storage medium being volatile memory; and a main control unit for controlling a process by which the library in the C language calls the library in the C++ language, so that the actual address value of an API is searched for with reference to the stub of the library in the C language and to the compile function table of the library in the C++ language, the corresponding
  • APIs Application Program Interfaces
  • Another object of the present invention is to provides a method of calling an API, including an address request checking step of checking whether the stub of a library in the C language requests the address value of an API from a library in the C++ language in a terminal device; an actual address value acquiring step of, if, as a result of the address request checking step, the stub of the library in the C language requests the address value of the API from the library in the C++ language, searching the compile function table of the library in the C++ language for the address value of the API, which is requested by the stub of the library in the C language using a function name, using the corresponding same function name, and acquiring the address value of the API; and a C++ API linking step of linking to a location corresponding to the actual address value of the library in the C++ language, which is acquired by the stub of the C language from the compile function table in the C++ language, and executing the corresponding API.
  • a further object of the present invention is to provide a method of creating a compile function, including: a compiling step of compiling the function names of a library in the C++ language in a terminal device and creating a library; a symbol extracting step of extracting symbols (function names) from the compiled library; and a function IDentification (ID) assigning step of assigning function IDs to the extracted symbols (function names), and then creating a library having a compile function table.
  • FIG. 2 is a diagram showing a terminal device having a function of interfacing compilation libraries in heterogeneous languages according to the present invention.
  • a terminal device 8 includes a first storage medium 5 (hereinafter called ROM), which is nonvolatile memory, a second storage medium 6 (hereinafter called RAM), which is volatile memory, and a main control unit 7.
  • the terminal device 8 may be implemented as a Personal Digital Assistant (PDA) equipped with a wireless module, a notebook computer equipped with a wireless module, a Personal Computer (PC) equipped with a wireless module, or a mobile phone equipped with a wireless module.
  • PDA Personal Digital Assistant
  • PC Personal Computer
  • the first storage medium 5 is memory that stores a phone BIOS for operating a platform or application programs.
  • the first storage medium 5 contains a library 2 written in the C++ language and provided with a compile function table 1 including C++ language-type API address values, and a library 4 provided with a stub 3 associated with the compile function table 1 in the C language.
  • the stub 3 includes a function of calling the address value of an API of a library 4 in the C language, that is, a different language, and calling the address value of an API desired to be executed using a function name from the compile function table 1 of the library 2 in the C++ language.
  • the second storage medium 6 is volatile memory (RAM) that stores temporary data processed within the terminal device.
  • RAM volatile memory
  • the main control unit 7 controls the general functions of the terminal device 8.
  • the main control unit 7 controls the interfacing process between libraries written in heterogeneous languages, for example, a process of a library 4 in the C language calling the library 2 in the C++ language, so that an actual address value of an API is searched for with reference to the stub 3 of the library in the C language and the compile function table 1 of the library 2 in the C++ language, the location of the corresponding API is linked to, and then the call to the API is processed.
  • the main control unit 7 directs the request to be made using a function name.
  • the terminal device 8 may further include a wireless module unit 10, a display unit 11, a codec unit 13, and a key panel unit 14.
  • the wireless module unit 10 processes wireless call signals (including multimedia signals), including image and voice signals, which are transmitted or received to or from the terminal device 1 through a mobile communication network system 9 in response to the transmission control signals of the main control unit 7.
  • the display unit 11 displays various types of data, processed in the terminal device 8, to the outside in response to the display function control signals of the main control unit 7.
  • the codec unit 13 converts analog voice signals, input through a microphone 12, into digital signals or digital signals into analog signals in response to the call connection control signals of the main control unit 7, and outputs the resulting signals.
  • the key panel unit 14 is connected to an end of the main control unit 7, and inputs the function setting signals of the user to the main control unit 7.
  • FIG. 3 is a flowchart showing an interfacing method according to the present invention.
  • the process proceeds from an initial state step Sl to an address value request checking step S2, and checks whether the stub of the library in the C language requests the address value of an API from the library in C++.
  • the address value request checking step S2 further includes a function name requesting step of requesting a function name when the stub of the library in the C Ian guage requests the address value of an API from the library in the C++ language.
  • the stub of the library in the C language does not request the address value of an API from the library in the C++ language, the present step is terminated, and the process proceeds to a waiting state step.
  • the process proceeds to an actual address value acquiring step S3, searches the compile function table of the library in the C++ language for the address value of the API requested by the stub of the library in the C language using a function name corresponding to the address value of the API, and acquires it.
  • C++ API linking step S4 links the stub in the C language to the location corresponding to the actual address value of the C++ library acquired using the compile function table in the C++ language, and executes the corresponding API.
  • function names symbols
  • a compile function table 1 acquired by compiling a function table created using the list and linking to the library, is an array having the pointers to the actual functions.
  • a function in the C language which has acquired the compile function table 1, is exported, so that the compile function table 1 can be acquired by functions which will use the library.
  • the stub is a function which has the same name as the function name
  • symbol name of a library.
  • a function which uses a library, is statically linked to a stub.
  • a stub function having the same name as the actual function name of the library is called.
  • the called stub function acquires an actual function pointer from the compile function table 1, and performs linking, thereby executing the function of the actual library.
  • FIG. 4 is a flowchart showing a method of creating a compile function table according to the present invention.
  • the process proceeds from an initial state step SI l to a compiling step S 12, compiles the function names of the library in the C++ language, and creates a library. Thereafter, the process proceeds from the compiling step S 12 to a symbol extracting step S 13, and extracts symbols (function names) from the compiled library. Further, the process proceeds from the symbol extracting step S 13 to a function ID assigning step S 14, assigns function IDs to the extracted symbols (function names), and creates a library having a compile function table.
  • the function ID assigning step S 14 further includes a number assigning step of assigning function IDs in numbers.
  • a predetermined development device compiles a library in the C++ language using function names and creates a compiled library. Further, the device extracts symbols (function names) from the compiled library, assigns function IDs, for example, numeral function IDs, to the extracted symbols (function names), creates a library having a compile function table, and stores the created library in the ROM 5 of the terminal device 8.
  • the terminal device 8 loads libraries written in heterogeneous languages, for example, the C and C++ languages, from the ROM 5 into the RAM 6, along with the executable data of the application program required to be currently executed.
  • the main control unit 7 of the terminal device 8 calls the API that is being currently executed from the RAM 6.
  • the stub 3 of the library 4 in the C language requests the address value of the API from the library 2 in the C++ language.
  • the main control unit 7 searches the compile function table 1 of the library 2 in the C++ language for the address value of the API, requested by the stub 3 of the library 4 in the C language using a function name (symbol), using the same function name, and acquires the address value of the API.
  • the main control unit 7 links to a location corresponding to the actual address value of the C++ library 2, which the stub 3 in the C language acquired from the compile function table 1 in the C++ language, and executes the corresponding API
  • the main control unit 7 displays the details of the execution on the display unit 11, and outputs voice signals to the microphone 12 through the codec unit 13.
  • the main control unit 7 of the terminal device 8 provides notification of the wireless call using the display unit 11 or the microphone 12.
  • the main control unit 7 transmits a response call to an opposite party terminal 15 through the mobile communication network system 9, by which a general call is realized.
  • the present invention can be implemented by computer readable code written in a computer readable recording medium. Codes and code segments which realize the above-described programs can be easily devised by computer programmers in corresponding fields.
  • the computer readable recording medium includes all kinds of recording devices which store data capable of being read by a computer system.
  • the computer readable recording medium may be, for example, ROM, RAM, Compact Disc Read-Only Memory (CD-ROM), a magnetic tape, a floppy disk, an optical disk, and flash memory.
  • the computer readable recording medium is distributed in computer systems connected to each other through a network, and computer readable code may be stored and executed in a distributed manner.

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  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stored Programmes (AREA)

Abstract

L'invention concerne un dispositif terminal présentant une fonction d'interfaçage de bibliothèques de compilation en langages hétérogènes. Un premier support de stockage stocke une bibliothèque en langage C++ pourvue d'une table de fonctions de compilation comprenant les valeurs d'adresse de type langage C++ d'API, et une bibliothèque en langage C comprenant un élément de remplacement associé à la table de fonctions de compilation. Un second support de stockage est un espace dans lequel sont chargées la bibliothèque en langage C, qui comprend l'élément de remplacement, et la bibliothèque en langage C++, pourvue de la table de fonctions de compilation, lorsqu'une plate-forme stockée dans le premier support de stockage est chargée. Une unité de commande principale commande un processus au moyen duquel la bibliothèque en langage C appelle la bibliothèque en langage C++, de façon que la valeur d'adresse effective d'une API soit recherchée par référence à l'élément de remplacement de la bibliothèque en lange C et à la table de fonctions de compilation de la bibliothèque en langage C++, un emplacement correspondant de l'API étant alors mis en lien avec celle-ci, l'appel étant ensuite traité.
PCT/KR2007/005036 2006-10-31 2007-10-15 Dispositif terminal présentant une fonction d'interfaçage de bibliothèques de compilation en langages hétérogènes, procédé d'appel d'api et procédé de création d'une fonction de compilation WO2008054074A1 (fr)

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KR1020060106799A KR20080039080A (ko) 2006-10-31 2006-10-31 이종언어편집 라이브러리의 인터페이스 기능이 구비된단말장비, ａｐｉ호출방법 및 컴파일함수생성방법
KR10-2006-0106799 2006-10-31

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Cited By (6)

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GB2450610A (en) * 2007-06-28 2008-12-31 Symbian Software Ltd Using stubs to link independently generated code images
CN109783077A (zh) * 2018-12-14 2019-05-21 平安科技（深圳）有限公司 区块链系统及其中间件系统、数据上链方法、存储介质
CN112416470A (zh) * 2019-08-22 2021-02-26 腾讯科技（深圳）有限公司 命令的执行方法和装置、存储介质及电子装置
CN113448655A (zh) * 2021-07-09 2021-09-28 赞同科技股份有限公司 C标准动态库的调用方法与装置
CN113805994A (zh) * 2021-09-06 2021-12-17 维沃移动通信有限公司 应用程序控制方法、装置、电子设备及存储介质
WO2022166410A1 (fr) * 2021-02-02 2022-08-11 华为技术有限公司 Procédé et appareil pour effectuer des sauts entre des fonctions ayant des symboles ayant des noms différents, et support de stockage lisible par ordinateur

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US10783082B2 (en) * 2019-08-30 2020-09-22 Alibaba Group Holding Limited Deploying a smart contract
CN110990018B (zh) * 2019-10-29 2023-03-24 北京全路通信信号研究设计院集团有限公司 一种嵌入式系统的编译方法及编译系统
CN112306539B (zh) * 2020-11-05 2023-08-01 重庆科技学院 一种单片机应用层开发方法、系统、终端及介质

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2450610A (en) * 2007-06-28 2008-12-31 Symbian Software Ltd Using stubs to link independently generated code images
CN109783077A (zh) * 2018-12-14 2019-05-21 平安科技（深圳）有限公司 区块链系统及其中间件系统、数据上链方法、存储介质
CN112416470A (zh) * 2019-08-22 2021-02-26 腾讯科技（深圳）有限公司 命令的执行方法和装置、存储介质及电子装置
CN112416470B (zh) * 2019-08-22 2023-08-25 腾讯科技（深圳）有限公司 命令的执行方法和装置、存储介质及电子装置
WO2022166410A1 (fr) * 2021-02-02 2022-08-11 华为技术有限公司 Procédé et appareil pour effectuer des sauts entre des fonctions ayant des symboles ayant des noms différents, et support de stockage lisible par ordinateur
CN113448655A (zh) * 2021-07-09 2021-09-28 赞同科技股份有限公司 C标准动态库的调用方法与装置
CN113805994A (zh) * 2021-09-06 2021-12-17 维沃移动通信有限公司 应用程序控制方法、装置、电子设备及存储介质

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