CN102402480A - Tool for debugging (testing) command line of circuit board firmware - Google Patents
Tool for debugging (testing) command line of circuit board firmware Download PDFInfo
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- CN102402480A CN102402480A CN2011103070977A CN201110307097A CN102402480A CN 102402480 A CN102402480 A CN 102402480A CN 2011103070977 A CN2011103070977 A CN 2011103070977A CN 201110307097 A CN201110307097 A CN 201110307097A CN 102402480 A CN102402480 A CN 102402480A
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Abstract
The embodiment of the invention relates to a tool for debugging (testing) a command line of a circuit board firmware, which is used for enabling a circuit board in a running state to begin execution from a specified code address through the command line in a circuit board firmware or software development process, and outputting an execution result serving as debug LOG information so as to debug, trace and test the target circuit board firmware/software. For command key words, not only can registered command key words be used, but also function names and global variable names in firmware/software source codes (C/C++ source codes) can be used. For a command using the function names and global variable names in firmware/software source codes (C/C++ source codes), an 'upper computer command line' program is combined with a specified 'firmware code identification mapping table', an execution address corresponding to the function names or the global variable names is found out, then the address is used as a parameter, a registered program is used for calling the command or memory viewing/ changing the command to be transmitted to a 'circuit board debugging module' of a target circuit board.
Description
Technical field
The present invention relates to be used for debugging, follow the tracks of and test the circuit board firmware.And, after the formal issue of circuit board and firmware thereof,, still can make the circuit board firmware program begin to carry out from the start address of any appointment through embodiments of the invention.For example, through the present invention, function or the global variable that can directly specify firmware source code (C/C++) are as command execution.
Background technology
Usually, circuit board firmware engineering teacher is in the firmware R&D process, and the most frequently used debugging acid is exactly debugging emulation device (ICE).Although the debug function of debugging emulation device (ICE) is powerful,, limitation below it exists:
The target program of firmware must compiling link debug information in compile time
Firmware must connect startup through debugging emulation device (ICE).
Debugging emulation device (ICE) equipment and supporting debugging software cost an arm and a leg.
Exactly because above limitation is added, the research staff is when doing the firmware research and development; Usually be not all need carry out single-step debug at every turn; And more be to do unit testing, that is, and in the cataloged procedure; Subfunction or the subroutine just accomplished are moved in enough simple environment, whether consistent with the inspection execution result with research staff's expection.
Scheme provided by the present invention is exactly in the circuit board firmware; Such simple environment can be provided, and make this simple running environment be embodied as a general environment: operating personnel can carry out arbitrarily firmware function, subroutine or global variable to detect the result of its realization through " host computer order line " program.
The circuit board firmware is accomplished after the final issue, still can be through scheme provided by the present invention, and the inner various application programming interfaces that provide of firmware itself, check each process of firmware inside, thread, internal memory, equipment is etc. information.
Though the Tornado product of Wind River company (WindRiver) also possesses the above-mentioned functions characteristic, the Tornado product only can be used for the VxWorks operating system of wind river company (WindRiver) oneself.
For the present invention, the disclosed technical scheme of inventor is that this functional character is applied to all embedded OSs, comprise Linux, ThreadX, etc., also comprise the VxWorks of wind river company (WindRiver) certainly.
Summary of the invention
The objective of the invention is to, realize a kind of method, make circuit board firmware (perhaps software) research staff; The tester, perhaps the final user of circuit board product can pass through the order imported, realizes that firmware (perhaps software) begins to carry out from the code address (being generally the C/C++ function pointer) of appointment; Understand current circuit board hardware, firmware, process through the debugging log information of output then; Internal memory, information states such as storehouse.For example; Suppose to have used embodiments of the invention in certain a circuit board of mobile phone system; The cellie then can be attached thereto through USB or WIFI communication interface through " host computer order line " program of the embodiment of the invention so; The operation conditions of inquiry mobile phone current process, the internal memory operating position, or the like.
In order to realize this purpose, the present invention increases a module in objective circuit plate firmware, and at this, the inventor is with this module called after " circuit board debugging module ".Simultaneously, arrange " host computer order line " program and " circuit board debugging module " to pass through USB, communication interfaces such as network connect.
" host computer order line " program is an application program, is normally operated on the PC, perhaps on the notebook computer, perhaps on other computer equipments, such as panel computer.The debugging log information that " host computer order line " program produces through communication interface receiving target circuit board, and output on the display screen.The order that " host computer order line " program is responsible for that operating personnel are imported is sent to " the circuit board debugging module " of objective circuit plate.If " firmware code sign mapping table " data to " host computer order line " program intended target circuit board; Operating personnel can be with arbitrary function name in the firmware source code (C/C++) or global variable name as input command; " circuit board debugging module " will be carried out this function or export the numerical value of global variable, and the execution result of function and the numerical value of being exported are all with debugging log information retransmission to " host computer order line " program.
This scheme of the present invention can help circuit board firmware research and development slip-stick artist easily or the tester realizes debugging or the expansion of test function.Such as, can increase definition and realize the corresponding function expansion with minor function:
Define a function: the current all internal memories of the system that lists are size always, the size of having used, idle size, the size of idle largest block, peak value that internal memory uses or the like.
Define a function: list the process of current all terminate-and-stay-residents of system, comprise process name, process identification (PID) (Task Identification), process entry address, process priority, process status, CPU time occupation proportion or the like.Define a function: process identification (PID) (Task Identification) or process handle as parameter, are listed the stack information that this process is carried out.Promptly,, list all function call hierarchical relationships to the entrance function of this process from the current function of carrying out of process.For firmware research and development slip-stick artist, this is a very useful function order, because work as firmware unusual generation is arranged, as long as system does not also entirely collapse, just can order accurate in locating to the unusual code line that takes place through this.
Define a function: and the defined function parameter is data address, data length, filename.Through the order of this function, the data and the length of objective circuit plate system-specific address is downloaded to host computer, preserve with the filename of appointment.
Define a function: and the defined function parameter is data address, data length, filename.Through this function order, upload to the objective circuit plate with being stored in data file host computer, the specified file name, be saved in the internal memory of assigned address and length.According to the function of this command functions, the firmware engineering teacher is easy to do and further expands, and realizes the renewal to the circuit board firmware.
Function defined above when as command execution, needs one of content of the present invention---the support of " circuit board debugging module ".
In " circuit board debugging module "; Debugging log information management submodule is preserved up-to-date log information; If it is full to preserve the buffer zone of log information, but system has produced new log information again, so up-to-date log information just overrides the oldest log information; And the byte number that the reference position and the end position of log information moved certain-length, this byte length just is capped the byte number of the oldest log information.
In " circuit board debugging module ", the reservation order of all registrations of Ordered Registration submodule management.The core purpose of Ordered Registration is with the order keyword and orders between performed function or the subroutine and set up corresponding relation; When receiving an order keyword,, find the command execution address through the Ordered Registration tabulation; The specified command parameter begins to carry out from the order executive address then.In order to realize that operating personnel can import arbitrarily firmware source code function or global variable as order, the order that the present invention registered must comprise claim 4, claim 5, and claim 6 is described order.
Description of drawings
In the accompanying drawings, described is relation between " circuit board debugging module " and " host computer order line " program, the formation of " circuit board debugging module " inner each sub-module, the formation of " host computer order line " each sub-module of program and user interface.
101: target " circuit board debugging module ", this module places objective circuit plate firmware.Behind the objective circuit plate firmware electrifying startup, carry out the initialization interface of this module, accomplish initialization 102,103,104,105 each sub-module.
102: debug command registration management submodule.The administration order register list realizes registration and anti-registration to ordering keyword, makes submodule 104 arrive the function pointer address that corresponding command is carried out according to the order keyword query.
103: order receives with Debugging message and transmits submodule.After this submodule initialization, wait for that 107 active connects.After the successful connection, read the command-line string of 106 communication interfaces, through 104 submodule resolve command character strings; The Debugging message input that this submodule is managed submodule 105 is sent to 107.
104: the debug command analyzing sub-module.The command-line string that this submodule analyzing sub-module 103 receives is confirmed the order keyword, according to the Ordered Registration tabulation of submodule 102, confirms command execution function pointer address according to the order keyword.
105: the Debugging message management submodule.This submodule provide debugging log information printout interface routine (as: printf (... )).And the debugging log information character string of this interface input is write log information store buffer zone into, when buffer zone is full, log information the oldest in the buffer zone will be capped.When submodule 103 successfully is connected with 107, buffer data will be by old to newly being transferred to 107, and simultaneously, having transferred to 107 log information will remove in cyclic buffer, so that up-to-date log information is saved to cyclic buffer.
106: the debug communications interface.Like network interface, RS232 serial ports, USB mouth.
107: " host computer order line " program.An application program is normally operated on the PC, perhaps on the notebook computer, perhaps on other computer equipments, such as panel computer.The debugging log information that this program produces through interface 106 receiving target circuit boards, and output on the display screen.Operating personnel are sent to 103 of objective circuit plate through this program with the order of being imported.
108: Debugging message receives submodule.When 107 and 101 through after interface 106 successful connections, submodule 103 to this submodule, and outputs to the debugging log information transmission on the display screen.
109: debug command transmits submodule.Institute of this submodule read operation personnel institute input command line character string; Judge 107 designated " firmware code sign mapping table " data whether; If have, then resolve, and the new command-line string of generation transfers to submodule 103 through interface 106 after will resolving through submodule 110; If the command-line string of no, then directly operating personnel being imported is sent to submodule 103.
110: " firmware code sign mapping table " analyzed submodule.This submodule is through the command-line string of analyzing sub-module 109; Confirm the order keyword; Combine " firmware code sign mapping table " according to the order keyword then, confirm that command object is to carry out a function, still reads the firmware code global variable; Perhaps revise the firmware code global variable, the command-line string of forming new standard then returns to submodule 109.
111: interface input: the operation that is connected/breaks off with objective circuit plate 101.Operating personnel can be through controlling this operation that operation realizes and objective circuit plate 101 is connected/breaks off.112: interface input: the operation of specifying " firmware code sign mapping table " file.Operating personnel can should operation realize intended target circuit board firmware pairing " firmware code sign mapping table " file through control.
113: the interface I/O: order line input, the output of debugging log information.Operating personnel can this input command line character string, checks the debugging log information that receives from the objective circuit plate.
Embodiment
As shown in Figure 1, implementation of the present invention is made up of two parts, is respectively: " the circuit board debugging module " that places the circuit board firmware---and 101, place " the host computer order line program " of host computer---107.Connect through communication interface 106 between 101 and 107.
Practical implementation method of the present invention is: after the objective circuit plate powered on, firmware (being generally embedded OS) started operation, " circuit board debugging module " 101 beginning initialization, and difference initialization 102,103,104,105 each sub-module.
The initialization of submodule 102 is the memory headroom of warning order register list at first, utilizes the Ordered Registration application programming interfaces to accomplish the registration (to issue orders to making up basic command of the present invention) to issue orders then:
The address fill order, " call addr, par1; par2 ... ": wherein, " call " is the order keyword; " addr ", " par1 ", " par2 "; Deng the parameter that is order " call ", the purpose of this order is to carry out function address " addr ", and carries out this address function parameters and be " par1 ", " par2 ".The number of parameters that this order realizes is variable, but must comprise parameter " addr ".
The internal storage data reading order, " d addr, width, count ": wherein, " d " is the order keyword, and " addr ", " width ", " count " are command parameter.The execution purpose of this order is to check that the address is the internal storage data of " addr ", and data width is " width ", and unit is a byte number, 1 byte, and 2 bytes, 4 bytes etc., the data number is " count ".This order exports the internal storage data that reads to host computer procedure 107 with debugging log information.
The internal storage data write command, " m addr, width, value ": wherein, " m " is the order keyword, and " addr ", " width ", " value " are command parameter.The execution purpose of this order is that data " value " are write the internal memory of address for " addr ", and data width is " width ", and unit is a byte number, 1 byte, 2 bytes, 4 bytes etc.This order exports the data result of write memory address to host computer procedure 107 with debugging log information.
In embodiments of the present invention, submodule 102 also need be accomplished following application programming interfaces:
Registration debug command interface;
Delete registered command interface;
Export all registered command interface information;
The method of calling information of the order of output appointment;
Service processes is created in the initialization of submodule 103, and " host computer order line " program of wait 107 is through the connection of communication interface 106, and after the successful connection, the debugging log information data of reading submodule 105 is sent to 107 through interface 106.Receive the command string that sends from 107 simultaneously; Call the command-line string of submodule 104 definition and resolve application interface; Confirm the pairing command execution function pointer of order keyword, and begin to carry out that execution result is with debugging log information temporary storage to submodule 105 from this function pointer.
Submodule 104, defined application programming interfaces are resolved the command-line string that submodule 103 receives, and it is following to carry out function:
Confirm the keyword of command-line string, the log-in command tabulation of zygote module 102 is found the command execution function pointer according to the order keyword.
Confirm the parameter list of command-line string, the parameter of character string forms is translated into corresponding decimal integer, scale-of-eight integer, sexadecimal integer, floating number or character string text.
The memory management of debugging log message loop buffer zone is accomplished in submodule 105 initialization: confirm cyclic buffer internal memory start address and length, its length of cyclic buffer internal memory start address skew is the end address; The start address of log information, length, the start address of end address log information equals its end address, and length is 0.
Submodule 105 defined debugging log information output application interface (printf (const char*szFmt ... )).Each application program is through calling log information output application interface output debugging log information in the fixer system.This application interface is saved to log information cyclic buffer internal memory with debugging log information character string.
In submodule 5,, adopt following strategy for the management of debugging log message loop buffer zone:
In the region of memory of debugging log message loop buffer zone, start address, end address and the debugging log message length (hereinafter is with abbreviating start address, end address, message length respectively as) of debugging log information preserved in definition.
When debugging log information output function is saved to cyclic buffer with the log information character string, will write character string from start address, and the message length that adds up.
The end address is: with the start address basis, and offset information length, if the address after the skew is when having exceeded the cyclic buffer memory range, the end address is promptly from buffer zone start address off-limits value that squints.
If when the end address reaches start address (all debugged log information of just whole buffer zone internal memory fills up), then start address is automatically moved to the next internal storage location of end address, and makes message length be forced to the length of cyclic buffer internal memory.
When submodule 103 reads the debugging log information in the cyclic buffer and be sent to " host computer order line " program 107, the length that its start address will squint backward and be read is the same with the processing of end address; When start address is displaced to buffer zone internal memory end; To continue skew from the buffer zone start address automatically, simultaneously, message length also will be done corresponding successively decreasing; Decrement value is the message length that is read, and is 0 up to the cyclic buffer message length.
Shown in Figure 1 107 is " host computer order line program ", is made up of program submodule 108,109,110.After program 107 starts, each program submodule 108,109,110 will be accomplished initialization respectively.
Program 107 is directly for operating personnel provide service, and operating personnel control through 107 interface (111,112,113).Program submodule 108 obtains the debugging log information that the objective circuit plate transmits through reading communication interface 106, and debugging is sent to interface 113 outputs.This program submodule begins after operating personnel carry out interface 111 successes.
Program submodule 109 passes through communication interface 106 objective circuit plate debugging modules 101 with operating personnel through order line (or through the order line after 110 parsings of the program submodule) character string of interface 113 inputs.This program submodule also must be carried out interface 111 successes operating personnel, and through beginning behind the 113 input command line character strings of interface.
The function of program submodule 110 is resolved the command-line string that operating personnel imported.The prerequisite of carrying out this program submodule function is that operating personnel must specify " firmware code sign mapping table " file through interface 112.The method that the command-line string that operating personnel imported is resolved is following:
Confirm the order keyword of order line, further confirm command parameter simultaneously, and all parameters are saved to parameter list.
In " firmware code sign mapping table " data,, confirm its memory address, data length, and marking code attribute (run time version or data code) according to the firmware code sign with order keyword query firmware code sign.
If the marking code attribute is a run time version, the order of just being imported with defined call command-execution operation personnel in the firmware submodule 102.Its method is: " call " is the order keyword, identifies determined memory address according to firmware code and is first parameter, and append the directly parameter list of input of operating personnel, forms new command-line string with this.Be sent to objective circuit plate 101 modules through communication interface.
If the marking code attribute is a data code; Then program submodule 110 need be done further parsing to the command-line string of current input; Whether there is "=" symbol after judging the order line keyword; And follow digit strings after "=" symbol closely: if, represent that then the current command revises order for the firmware global variable, will use firmware submodule 102 defined " m " command execution; If not, represent that then the current command is a firmware memory address viewing command, will use firmware submodule 102 defined " d " command execution.
The main policies that the present invention implements is to utilize the basic debug command that defines in the submodule 102; And combined circuit plate firmware is by " firmware code sign mapping table " data that compile time produced, and makes in the firmware source code arbitrarily function or global variable can both be taken as command execution.
Claims (10)
1. one kind for the circuit board firmware provides the tool and method of local operation, and purpose is the debugging of circuit board firmware and test.It is characterized in that, comprising:
The debugging log information management places " circuit board debugging module ".
The debug command registering functional places " circuit board debugging module ".
Order receives, and resolves, and carries out function, places " circuit board debugging module ".
Log-in command sends, and places " host computer order line " program.
Firmware C/C++ source code function, global variable be as order, and, place " host computer order line " program to its parsing and transmission.
2. according to claim 1, " circuit board debugging module " is to debugging log (LOG) management of information: through cyclic buffer storage debugging log (LOG) information.It is characterized in that:
Debugging log (LOG) the information output interface that " circuit board debugging module " provided stores log information into buffer zone, expires when buffer zone, and log information the oldest in the buffer zone will be capped; When " host computer order line " program successfully is connected with " circuit board debugging module "; Buffer data will be by old to newly being transferred to " host computer order line " program; Simultaneously; The log information that has transferred to host computer will be removed in cyclic buffer, so that up-to-date log information is saved to cyclic buffer.
3. according to claim 1, the Ordered Registration function of " circuit board debugging module ", the registration of the order that realization can supply be carried out is characterized in that: a complete order comprises:
The order keyword as command identifier, can be used underscore, capital and small letter English alphabet, and the character string of numeral composition, and wherein numeral can not be as first character of identifier character string;
The start address of command execution can be the subroutine address of circuit board systems firmware, also can be the C/C++ function pointer;
The parameter of command execution, log-in command can have one or more parameter, also can not have parameter, specifies the form of log-in command parameter can support integer, character string, and floating number.
According to above information, " circuit board debugging module " accomplished the registration to an order.
4. according to claim 1 and claim 3; A registrable order of carrying out from assigned address; It is characterized in that: the code start address that first parameter of this order is carried out to start with; From second and afterwards (if desired) all parameters, be the suction parameter that the code start address is carried out.
5. according to claim 1 and claim 3; A registrable order of checking the specified memory address data is characterized in that: with memory address, and internal storage data length (is unit with the byte); Data output format; As command parameter,, internal storage data is outputed to " host computer order line " program with debugging log information etc. information according to claim 2.Data output format can be appointed as: character string, 8 bits, 16 system data, 16 bits, 16 system numbers, 32 bits, 16 system numbers.
6. according to claim 1 and claim 3, a registrable order of revising the specified memory address data is characterized in that: with memory address, be written into internal storage data, and writing format is as parameter.Writing data layout can be appointed as: character string, 8 bits, 16 bits, 32 Bit datas.
7. according to claim 1, " circuit board debugging module " can pass through COM1 (like network interface .USB mouth, or the like) and receive the order that sends from " host computer order line " program.And resolve, carry out and should order, it is characterized in that:
Confirm the order keyword and the command parameter that receive.According to claim 3, be foundation with the order keyword, in all registered command list (CLIST)s, search corresponding command; Confirm the execution start address of this order, and with this address as function pointer, with what receive; And with the parameter confirmed as the function input parameter, carry out this function pointer.According to claim 2, exportable debugging log information in the function implementation, the end value of returning that function is carried out also will output to " host computer order line " program with debugging log information.
8. according to claim 1, " host computer order line " program is sent to " objective circuit plate debugging module " after the order line that operating personnel imported is resolved through order line.It is characterized in that:
Operating personnel can specify " firmware code sign mapping table " data to current debugging enironment in " host computer order line " program.If do not specify " firmware code sign mapping table ", the command-line string of importing in " host computer order line " program will directly be sent to " objective circuit plate debugging module "." objective circuit plate debugging module " will resolve and carry out order line according to the described method of claim 7.For having specified " firmware code sign mapping table " data conditions, the command-line string of in " host computer order line " program, being imported will transfer commands to " objective circuit plate debugging module " according to the defined method of claim 9.
9. according to claim 1, firmware C/C++ source code function or global variable can be used as order.It is characterized in that:
After " host computer order line " program start; Operating personnel can specify " firmware code sign mapping table " data; For the command-line string that operating personnel imported, " host computer order line " program is resolved to confirm the order keyword it, is foundation with this order keyword character string; In " firmware code sign mapping table " data, find pairing address, and confirm that the data of this address are executable code or global variable data.If executable code,, this address as parameter, and is appended the command line parameter that operating personnel import and formed new order line, and new command-line string is sent to " objective circuit plate debugging module " with the defined order of claim 4; If global variable data; With claim 5 or the defined order of claim 6, as parameter, and specify corresponding data length and width this address as additional parameter; Form new order line, and new command-line string is sent to " objective circuit plate debugging module ".
10. about above each item claim described " firmware code sign mapping table " data, be meant that marking code that firmware or software produces is with the corresponding relation data between the address in the compiling link process.For example, using gcc/g++ compile time, but designated parameter " Wl ,-Map, mapfile ", and wherein mapfile promptly is " firmware code sign mapping table " data of this target firmware or software.
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| CN113127103A (en) * | 2019-12-30 | 2021-07-16 | 武汉斗鱼网络科技有限公司 | Signaling system and electronic equipment |
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Application publication date: 20120404 |