JP2014095988A - Management controller, information processor, management method for integrated circuit and program therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a management controller capable of, even when there are a plurality of devices to be operated, efficiently and remotely operating the devices.SOLUTION: The management controller includes: a control circuit for, in accordance with instruction descriptions including an instruction to control an integrated circuit loaded with a circuit for achieving a predetermined function, giving a control signal for instructing the execution of the instruction and an operation signal for instructing an operation to the integrated circuit to the integrated circuit; and a monitor information holding circuit for, on the basis of the control signal and the operation signal from the control circuit, holding monitor information indicating the progress of the execution of the instruction descriptions in the integrated circuit. According as a branch instruction among the instruction descriptions is executed by the integrated circuit, the control circuit compares the monitor information held by the monitor information holding circuit with preliminarily held image information related to the branch instruction, and executes determination related to the branch instruction on the basis of the result of comparison to manage the integrated circuit.

Description

  The present invention relates to a management controller, an information processing apparatus, an integrated circuit management method, and a program thereof.

  For example, when an administrator of a server device installs an OS (Operating System) on the server device, it is usually installed using a setup disk or the like. In this case, if the setup disk is started on the server device, the installation work automatically proceeds. However, not all operations are automatically performed, and it is necessary for the administrator to manually operate to some extent. For example, when the “Next” button is displayed after the setup disk is activated, the administrator needs to input an instruction by operating a keyboard and a mouse.

  Further, it is possible to automate a remote operation in the server apparatus using a management computer (referred to as a management PC in the following description) connected to the server apparatus via a LAN (Local Area Network). is there. In other words, the remote operation of the server device is performed by a remote KVM (K: keyboard, V: video, M: mouse) device using software that enables automatic operation of a keyboard, mouse, and the like that operates on the management PC. Can be automated.

  For example, Patent Document 1 discloses a KVM switch that can automatically respond to a startup screen when a server is started.

  In Patent Document 2, a character string of a response command is generated when it is necessary to automatically respond, and when there is a response command to be automatically input, the response command is written in the communication path to the pseudo keyboard program. An automatic operating device is disclosed.

JP 2011-039912 A Japanese Patent Laid-Open No. 07-114466

  In the KVM switch disclosed in Patent Document 1, the operation of the server device can be automated using the remote KVM device. However, since there is one server device that can be remotely operated simultaneously by the remote KVM device, there is a problem in that the operation efficiency is poor when there are many server devices that are desired to be remotely operated.

  Patent Document 2 does not disclose a technique for automating the operation of the server device as described above.

  The present invention has been made in view of the above problems, and a main object of the present invention is to provide a management controller or the like that can efficiently remotely operate the device even when there are many devices to be operated.

  The first management controller of the present invention performs a control signal for instructing execution of an instruction and an operation on the integrated circuit in accordance with an instruction description including an instruction for controlling the integrated circuit including a circuit that realizes a predetermined function. A control circuit that gives an operation signal to be instructed to the integrated circuit, and monitor information that represents a progress of execution of the instruction description in the integrated circuit based on the control signal and the operation signal from the control circuit The monitor information holding circuit, and the control circuit holds the monitor information held by the monitor information holding circuit and the branch held in advance in response to the integrated circuit executing a branch instruction in the instruction description. The integrated circuit is managed by comparing image information related to the instruction and making a determination related to the branch instruction based on the comparison result.

  According to a first management method of the present invention, a control signal for instructing execution of an instruction and an operation on the integrated circuit are performed according to an instruction description including an instruction for controlling the integrated circuit on which a circuit that realizes a predetermined function is mounted. An operation signal to be instructed is supplied to the integrated circuit by a control circuit, and monitor information representing a process in which the instruction description is executed in the integrated circuit is monitored based on the control signal and the operation signal from the control circuit. The control circuit holds the monitor information held by the monitor information holding circuit and the branch instruction held in advance in response to the integrated circuit executing a branch instruction in the instruction description. The integrated circuit is managed by comparing the related image information and making a determination on the branch instruction based on the comparison result.

  This object is also achieved by a computer program that implements the management controller or management method having the above-described configurations by a computer, and a computer-readable storage medium that stores the computer program.

  According to the present invention, even when there are a large number of devices to be operated, it is possible to obtain an effect that the devices can be remotely operated efficiently.

It is a figure which shows the structure of the server apparatus management system which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the structure of the server apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows an example of the command described in the script which the server apparatus which concerns on the 1st Embodiment of this invention performs. It is a block diagram which shows the structure of the management controller which concerns on the 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First Embodiment FIG. 1 is a diagram showing a configuration of a server apparatus management system 1000 according to a first embodiment of the present invention. As shown in FIG. 1, in the server device management system 1000, a plurality of server devices 100 _{1 to} 100 _n are communicably connected to a management PC 200 via a LAN (Local Area Network) 300.

The management PC 200 can remotely operate the server apparatus 100 by using software that enables remote operation of a keyboard, a mouse, and the like that operate on the own apparatus. As a result, the management PC 200 can remotely operate all the server devices 100 _{1 to} 100 _n .

  FIG. 2 is a block diagram showing a specific configuration of server device 100 shown in FIG. As shown in FIG. 2, the server device 100 includes a chip set 10 and a BMC (Baseboard Management Controller) 20.

  The chip set 10 includes an OS that controls the operation of the server apparatus 100, and is an element serving as a host system that performs predetermined processing. The BMC 20 is a system management controller incorporated in the server apparatus 100. In this embodiment, the BMC 20 constantly monitors the chip set 10 serving as a host system and performs setup. The chip set 10 and the BMC 20 are communicably connected to each other via a USB (Universal Serial Bus) interface inside the server apparatus 100.

  The chip set 10 includes a CPU (Central Processing Unit) 11, a memory 12, and the like. The memory 12 includes, for example, a VRAM (Video Random Access Memory) 13 that holds video information (monitor information) displayed on the monitor 14 included in the server device 100. The BMC 20 includes a control circuit 21 and a memory 22. The memory 22 includes a VRAM 23, for example.

  The control circuit 21 of the BMC 20 includes a CPU 24 and controls the overall operation of the BMC 20 by executing a software program (computer program) included in the memory 22. In this embodiment and other embodiments described below, the CPU 24 included in the control circuit 21 executes a software program that realizes the function of the control circuit 21 included in the BMC 20 while referring to the memory 22 as appropriate.

  An operation of the server apparatus 100 by the management PC 200 will be described.

  The management PC 200 is a device that remotely operates the server device 100 via the LAN 300. More specifically, the management PC 200 operates the chipset 10 via the BMC 20. The management PC 200 transmits a keyboard signal 31 and a mouse signal 32 to the server apparatus 100 via the LAN 300. The keyboard signal 31 is a signal for performing a keyboard operation on the server apparatus 100 similar to the keyboard operation on the management PC 200. Similarly, the mouse signal 32 is a signal for performing the same mouse operation on the server apparatus 100 as the mouse operation on the management PC 200.

  In addition, the management PC 200 transmits and receives the media signal 33 to and from the server device 100. The media signal 33 is a signal for mounting / unmounting media such as a memory, an optical media drive, and a hard disk drive connected / disconnected to the USB port of the management PC 200 as if connected / disconnected to the USB port of the server apparatus 100. It is.

  Further, the management PC 200 receives the video signal 34 from the server device 100. Based on this video signal 34, the management PC 200 displays video information displayed on the monitor in the server apparatus 100 on a monitor (not shown).

  Further, the management PC 200 transmits a script describing a command for controlling the server device 10 and a comparison image used for executing the script to the server device 100 (details will be described later).

  Next, an outline of each component of the BMC 20 will be described.

  In the control circuit 21, the BMC 20 receives a signal from the management PC 200 and gives the signal to the chip set 10. In addition, the BMC 20 transmits a signal obtained from the chip set 10 to the management PC 200 in the control circuit 21. The control circuit 21 also executes a script received from the management PC 200 (details will be described later).

  The VRAM 23 holds video information (video data) received from the VRAM 13 included in the chipset 10 and transmits the video information to the management PC 200. The control circuit 21 can refer to the screen display (monitor display) based on the VRAM 13 included in the chip set 10 by referring to the VRAM 23. The memory 22 stores the comparison image received from the management PC 200 (details will be described later).

  Next, scripts and comparison images executed by the server apparatus 100 will be described.

  The management PC 200 holds in advance a script that controls the chipset 10 included in the server device 100. In this script, an instruction to be executed by the chipset 10 is described.

  FIG. 3 is a diagram illustrating an example of an instruction described in a script. As shown in FIG. 3, the script includes, for example, a conditional branch instruction 61, an arithmetic operation instruction 62, a keyboard input instruction 63, a mouse input instruction 64, a video information determination instruction 65, a remote media connection instruction 66, a video information output instruction 67, and A wait instruction 68 is included.

  The conditional branch instruction 61 and the arithmetic operation instruction 62 are general execution instructions necessary for OS setup. The keyboard input command 63 is a command for performing keyboard input of a specified key. The mouse input command 64 is a command for moving the mouse to a designated position and inputting a button.

  The video information determination instruction 65 is an instruction that is acquired from the VRAM 13 of the chipset 10 and determines whether or not there is a specific image and character in a specified area in the video information that can be referred to in the VRAM 23. The remote media connection command 66 is a command for mounting or unmounting media at a specified URL (Uniform Resource Locator). The video information output command 67 is a command for displaying a designated character as an overlay on the video information. The wait command 68 is a command for waiting for a predetermined time.

  The script may be, for example, a script describing the contents of the OS setup work or a script describing the contents of the pre-shipment inspection of the server device 100.

  The management PC 200 transmits a script to be executed in the server device 100 to the server device 100 and also transmits a comparison image. The comparison image is image data (image information) indicating a screen display related to the conditional branch instruction 61 generated during script execution. More specifically, the image data is used when deciding which branch to branch in accordance with the input value when the conditional branch instruction 61 is executed during script execution. Alternatively, it may be image data that displays an error that may occur during script execution.

  Next, a specific operation for executing a script in the server apparatus 100 will be described.

  When the control circuit 21 included in the BMC 20 receives the script and the comparison image from the management PC 200, the server apparatus 100 stores the comparison image in the memory 22. Then, the control circuit 21 starts executing the script in response to an instruction indicating script execution from the management PC 200.

  The control circuit 21 executes the script as follows. That is, when the control circuit 21 reads the conditional branch instruction 61 and the arithmetic operation instruction 62 from, for example, a script, the control circuit 21 provides the chip set 10 with a control signal 45 for performing a conditional branch or performing an operation in the CPU 24 according to these instructions. When the control circuit 21 reads the keyboard input command 63, the control circuit 21 supplies a keyboard signal 41 for inputting a key “Y”, for example, to the chipset 10 using the USB interface in accordance with the keyboard input command 63. .

  For example, when the mouse input command 64 is read after the “Next” button is displayed on the screen, the control circuit 21 moves the mouse to the button and sends a mouse signal 42 for pressing the button to the chipset using the USB interface. 10 is given.

  When the control circuit 21 reads out the video information output command 67 after sending the keyboard signal 41 for performing the key input “Y” by the keyboard input command 63, for example, the control circuit 21 displays “Y” in the designated area on the VRAM 13. Signal 45 is sent out.

  Subsequently, when the video information determination instruction 65 is read, the control circuit 21 compares the video information stored in the VRAM 13 displaying “Y” with the image data corresponding to the video information stored in the memory 22. To do. Then, the control circuit 21 determines whether the image and characters of the designated area in the video information held by the VRAM 13 match the image and characters of the designated area of the image data stored in the memory 22. Make a decision. Here, for example, when “Y” is displayed in the designated area of the image data stored in the memory 22, is “Y” displayed in the designated area in the video information held by the VRAM 23? Judge based on whether or not. Thereby, the control circuit 21 can perform conditional branching according to the input value. Based on the result of the determination, the control circuit 21 executes the following operation according to the script.

  When the control circuit 21 reads the remote media connection command 66, the control circuit 21 mounts or unmounts the media on the server device 100 by inputting / outputting the media signal 43 to / from the chip set 10. When the control circuit 21 reads the wait command 68, it waits for a specified time.

  The control circuit 21 inputs / outputs the control signal 45, the keyboard signal 41, the mouse signal 42, the media signal 43, and the video signal 44 to / from the chipset 10 according to the description content of the script as described above. . Thereby, the BMC 20 can automatically and remotely execute the setup operation of the chipset 10 without any user operation.

  As described above, according to the first embodiment, the control circuit 21 included in the BMC 20 incorporated in the server device 100 controls the chipset 10 serving as the host system according to the script received from the management PC 200. Since the control circuit 21 gives the chip set 10 operation signals for instructing user operations such as a keyboard signal 41 and a mouse signal 42 according to the script, the chip is automatically and remotely controlled without any user operation on the management PC 200. The set 10 can be operated.

  With the above configuration, according to the first embodiment, if a script describing the contents of the automatic operation is transmitted from the management PC 200 to each server device, each server device can remotely connect its own device with the hardware included in the own device. Can be operated automatically. Therefore, since the server apparatus can be automatically operated without an input operation by the management PC 200, the same work content can be automatically performed almost simultaneously on, for example, several hundred or more server apparatuses. Therefore, it is possible to significantly reduce the work man-hours in OS setup, inspection before shipping, and the like.

  In addition, since the user can create a script describing the details of the automatic operation to be executed by the server apparatus 100 in the management PC 200 in advance, automatic operation during OS setup work or POST (Power On Self Test) code execution, etc. The effect that the operation desired by the user can be easily performed is obtained.

  Further, since the BMC 20 gives control signals and input signals to the chipset 10, the above configuration can be realized as long as the server device includes the BMC 20. Therefore, there is no need to add additional hardware, and the effect of reducing costs can be obtained.

  Further, the BMC 20 can make a branch determination by referring to the screen display held in the VRAM 13 indicating the execution progress of the chipset 10 and comparing the screen display with a comparison image held in advance. With this configuration, it is possible to automatically take appropriate measures even when a branch determination is required during an automatic operation or when an error occurs.

  Note that the contents of the automatic operation may be saved in the BMC 20 as a log so that the user can refer to the operation performed after the script is executed. As a result, it is possible to confirm the contents of the automatic operation when an unexpected event occurs during script execution.

Second Embodiment FIG. 4 is a block diagram showing a configuration of a management controller 70 according to a second embodiment of the present invention. As shown in FIG. 4, the management controller 70 includes a control circuit 71 and a monitor information holding circuit 72.

  The control circuit 71 instructs a control signal for instructing execution of the instruction and an operation for the integrated circuit in accordance with an instruction description (script) including an instruction for controlling the integrated circuit on which a circuit for realizing a predetermined function is mounted. An operation signal is supplied to the integrated circuit.

  The monitor information holding circuit 72 holds monitor information (video information) indicating the progress of execution of the command description in the integrated circuit based on the control signal and the operation signal from the control circuit 71.

  The control circuit 71 compares the monitor information held by the monitor information holding circuit with the image information related to the branch instruction held in advance in response to the integrated circuit executing a branch instruction in the instruction description. The integrated circuit is managed by making a determination related to the branch instruction based on the result of the comparison.

  In the second embodiment, the integrated circuit corresponds to the chip set 10 in the first embodiment, and the monitor information holding circuit 72 similarly corresponds to the VRAM 23.

  As described above, according to the second embodiment, since the above-described configuration is provided, even when there are a large number of devices to be operated, an effect that the device can be remotely operated efficiently can be obtained.

  In the present invention described by taking each of the above embodiments as an example, a computer program capable of realizing the function of the control circuit 21 is supplied to the BMC 20, and then the computer program is read to the CPU. Achieved by executing.

  The supplied computer program may be stored in a computer-readable storage device such as a readable / writable memory (temporary storage medium) or a hard disk device. In such a case, the present invention can be understood as being configured by a code representing the computer program or a storage medium storing the computer program.

  The present invention can be applied to an information processing apparatus including a BMC, for example.

A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.
(Appendix 1)
A control signal for instructing execution of the instruction and an operation signal for instructing an operation on the integrated circuit according to an instruction description including an instruction for controlling the integrated circuit on which the circuit for realizing the predetermined function is mounted. A control circuit for
A monitor information holding circuit for holding monitor information indicating a progress of execution of the instruction description in the integrated circuit based on the control signal and the operation signal from the control circuit;
The control circuit compares the monitor information held by the monitor information holding circuit with the image information related to the branch instruction held in advance in response to the integrated circuit executing a branch instruction in the instruction description. And a management controller that manages the integrated circuit by executing a determination relating to the branch instruction based on the result of the comparison.
(Appendix 2)
The management controller according to claim 1, wherein the control circuit gives an operation to the integrated circuit using the input device as the operation signal.
(Appendix 3)
The control circuit includes the instruction describing an instruction for instructing the integrated circuit to perform an operation by an input device that operates in a terminal device that is communicably connected via a communication network, and an instruction for controlling the integrated circuit. A description is obtained from the terminal device, and the operation signal is transmitted to the integrated circuit according to an instruction for instructing an operation by the input device, and the control signal is transmitted to the integrated circuit according to an instruction for controlling the integrated circuit. Give The management controller according to Supplementary Note 1 or Supplementary Note 2.
(Appendix 4)
The control circuit compares the monitor information acquired by the monitor information holding circuit with error image information that displays an error that may occur during the execution of the instruction description held in advance, and based on the result of the comparison, The management controller according to any one of supplementary notes 1 to 3, which performs a determination relating to an error.
(Appendix 5)
An information processing apparatus comprising the management controller according to any one of appendix 1 to appendix 4.
(Appendix 6)
In accordance with an instruction description including an instruction for controlling an integrated circuit equipped with a circuit that realizes a predetermined function, a control signal for instructing execution of the instruction and an operation signal for instructing an operation on the integrated circuit are transmitted by the control circuit. To the integrated circuit,
Based on the control signal and the operation signal from the control circuit, the monitor information representing the progress of execution of the instruction description in the integrated circuit is held by a monitor information holding circuit,
The control circuit compares the monitor information held by the monitor information holding circuit with the image information related to the branch instruction held in advance in response to the integrated circuit executing a branch instruction in the instruction description. A management method for managing the integrated circuit by performing a determination relating to the branch instruction based on a result of the comparison.
(Appendix 7)
The integrated circuit management method according to appendix 6, wherein an operation using an input device is given to the integrated circuit by the control circuit as the operation signal.
(Appendix 8)
The instruction description that describes an instruction for instructing the integrated circuit to perform an operation by an input device operating in a terminal device that is communicably connected via a communication network, and an instruction for controlling the integrated circuit. Obtained from the terminal device by a circuit, the operation signal in accordance with an instruction for instructing an operation by the input device in the instruction description, and the control signal in accordance with an instruction to control the integrated circuit, to the integrated circuit, respectively. The integrated circuit management method according to appendix 6 or appendix 7.
(Appendix 9)
The monitor information acquired by the monitor information holding circuit is compared with error image information that displays errors that may occur during the execution of the command description held in advance, and based on the result of the comparison, a determination regarding the error is made. The integrated circuit management method according to any one of appendix 6 to appendix 8, which is performed by the control circuit.
(Appendix 10)
In accordance with an instruction description including an instruction for controlling an integrated circuit equipped with a circuit that realizes a predetermined function, a control signal for instructing execution of the instruction and an operation signal for instructing an operation on the integrated circuit are transmitted by the control circuit. Processing to the integrated circuit;
A process of holding monitor information representing a progress of execution of the instruction description in the integrated circuit by the monitor information holding circuit based on the control signal and the operation signal from the control circuit;
The control circuit compares the monitor information held by the monitor information holding circuit with the image information related to the branch instruction held in advance in response to the integrated circuit executing a branch instruction in the instruction description. An integrated circuit management program for managing the integrated circuit by causing a computer to execute a process for executing a determination relating to the branch instruction based on the result of the comparison.
(Appendix 11)
The integrated circuit management program according to appendix 10, which causes a computer to execute a process of giving an operation using an input device to the integrated circuit by the control circuit as the operation signal.
(Appendix 12)
The instruction description that describes an instruction for instructing the integrated circuit to perform an operation by an input device operating in a terminal device that is communicably connected via a communication network, and an instruction for controlling the integrated circuit. Obtained from the terminal device by a circuit, the operation signal in accordance with an instruction for instructing an operation by the input device in the instruction description, and the control signal in accordance with an instruction to control the integrated circuit, to the integrated circuit, respectively. The integrated circuit management program according to appendix 10 or appendix 11, which causes a computer to execute the processing to be applied.
(Appendix 13)
The monitor information acquired by the monitor information holding circuit is compared with error image information that displays errors that may occur during the execution of the command description held in advance, and based on the result of the comparison, a determination regarding the error is made. 13. The integrated circuit management program according to appendix 10 to appendix 12, which causes a computer to execute processing performed by the control circuit.

10 Chipset 11 CPU
12 Memory 13, 23 VRAM
14 Monitor 20 BMC
21 control circuit 22 memory 100 server device 200 management PC
300 LAN

Claims (10)

A control signal for instructing execution of the instruction and an operation signal for instructing an operation on the integrated circuit according to an instruction description including an instruction for controlling the integrated circuit on which the circuit for realizing the predetermined function is mounted. A control circuit for
A monitor information holding circuit for holding monitor information indicating a progress of execution of the instruction description in the integrated circuit based on the control signal and the operation signal from the control circuit;
The control circuit compares the monitor information held by the monitor information holding circuit with the image information related to the branch instruction held in advance in response to the integrated circuit executing a branch instruction in the instruction description. A management controller that manages the integrated circuit by executing a determination relating to the branch instruction based on the result of the comparison. The management controller according to claim 1, wherein the control circuit gives an operation to the integrated circuit using the input device as the operation signal. The control circuit includes the instruction describing an instruction for instructing the integrated circuit to perform an operation by an input device that operates in a terminal device that is communicably connected via a communication network, and an instruction for controlling the integrated circuit. A description is obtained from the terminal device, and the operation signal is transmitted to the integrated circuit according to an instruction for instructing an operation by the input device, and the control signal is transmitted to the integrated circuit according to an instruction for controlling the integrated circuit. The management controller according to claim 1 or 2. The control circuit compares the monitor information acquired by the monitor information holding circuit with error image information that displays an error that may occur during the execution of the instruction description held in advance, and based on the result of the comparison, The management controller according to any one of claims 1 to 3, wherein a determination relating to an error is performed.   An information processing apparatus comprising the management controller according to any one of claims 1 to 4. In accordance with an instruction description including an instruction for controlling an integrated circuit equipped with a circuit that realizes a predetermined function, a control signal for instructing execution of the instruction and an operation signal for instructing an operation on the integrated circuit are transmitted by the control circuit. To the integrated circuit,
Based on the control signal and the operation signal from the control circuit, the monitor information representing the progress of execution of the instruction description in the integrated circuit is held by a monitor information holding circuit,
The control circuit compares the monitor information held by the monitor information holding circuit with the image information related to the branch instruction held in advance in response to the integrated circuit executing a branch instruction in the instruction description. An integrated circuit management method for managing the integrated circuit by executing a determination related to the branch instruction based on a result of the comparison. The integrated circuit management method according to claim 6, wherein an operation using an input device by the control circuit is given to the integrated circuit as the operation signal. The instruction description that describes an instruction for instructing the integrated circuit to perform an operation by an input device operating in a terminal device that is communicably connected via a communication network, and an instruction for controlling the integrated circuit. Obtained from the terminal device by a circuit, the operation signal in accordance with an instruction for instructing an operation by the input device in the instruction description, and the control signal in accordance with an instruction to control the integrated circuit, to the integrated circuit, respectively. An integrated circuit management method according to claim 6 or 7. The monitor information acquired by the monitor information holding circuit is compared with error image information that displays errors that may occur during the execution of the command description held in advance, and based on the result of the comparison, a determination regarding the error is made. The integrated circuit management method according to claim 6, wherein the integrated circuit management method is implemented by the control circuit. In accordance with an instruction description including an instruction for controlling an integrated circuit equipped with a circuit that realizes a predetermined function, a control signal for instructing execution of the instruction and an operation signal for instructing an operation on the integrated circuit are transmitted by the control circuit. Processing to the integrated circuit;
A process of holding monitor information representing a progress of execution of the instruction description in the integrated circuit by the monitor information holding circuit based on the control signal and the operation signal from the control circuit;
The control circuit compares the monitor information held by the monitor information holding circuit with the image information related to the branch instruction held in advance in response to the integrated circuit executing a branch instruction in the instruction description. And an integrated circuit management program for managing the integrated circuit by causing a computer to execute a process for executing a determination relating to the branch instruction based on the comparison result.

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