r7 m445

Experiment topology diagram: Experiments show: The three-tier architecture, R1 and R2 for Headquarters, R3 and R4 for the region, R5 and R6 as branch offices, R7 analog Internet routers Experiment Request: 1. Branch to the headquarters or other areas to use R1 as the main link, R2 become a standby link 2.IP the hierarchy of address, to be able to achieve routing summary 3. The branch of the router as a stub node, to avoid other routers to send

-arm/mach/arch.h file. The __attribute__ ((__section__ (". Arch.info.init")) statement means that all MACHINE_DESC structures are stored in the ". Arch.info.init" segment, and they are organized together when the kernel is connected. The start address is __arch_info_begin and the end address is __arch_info_end. You can see it from the connection script Arch/arm/kernel/vmlinux.lds. - __arch_info_begin = .; #.arch.info.init segment Start address (dynamically determined at connecti

+ + language4. Use the cross-compilation tool to compile the C + + native code and finally link to the *.so executable5, the actual implementation of Java code to communicate with the local C + + codeNDK installation process:Under the premise that the computer has already configured the Android environment, only need to download the NDK (R7 above version), this is a compressed package, decompression is available. Note: Prior to

2 sets of 2000-Price AMD APU Configuration program, interested computer enthusiasts together to see, welcome to Pat Bricks. 2000 Yuan to buy what computer Configuration good? 2 sets of cost-effective APU Computer Configuration recommended accessories name brand model reference price processor amd APU a10-7890k (box) ￥899 heatsink boxed auto -- video card > Now the strongest

/myproject without selecting the revision number, and reintegrate merges all the modifications on branch to trunk. The following steps, as in the 9th step above, are no longer verbose. If no accident, branch will be successfully merged into trunk, you need to do is to merge the trunk hurriedly commit. 12, submitted after the merger of the trunk Right-click on the merged item, Temp-> Commit. 13, Delete branch If you think your new feature has been developed, you can delete your branch. 14, view

'; Query OK, 2 rows affected, 1 Warning (0.19 sec) records:1 duplicates:1 warnings:1 mysql> select * from t1; +---+----+----+ | a | b | +---+----+----+ | 1 | c3 | c2 | | 2 | A | | | 3 | R5 | R3 | | 5 | R4 | R5 | +---+----+----+ 4 rows in Set (0.00 sec) "" A=5 time, the original C value is still in, this means that when the key sometimes, only the following Udate action statements are executed. 2.2 Check the auto_increment condition again. mysql> INSERT INTO T1 (a,b) Select ' 3 '

51 single chip microcomputer precise delay procedure (crystal oscillator 12MHz, a machine cycle 1us.)Several precise delay procedures: in the calculation of accurate delay, the most easily overlooked is the calculation of the loop outside the part of the delay,This part does not affect the program in situations where the time requirement is not high. A. 500MS Delay subroutine program:. (Crystal oscillator 12MHz, a machine cycle of 1us.)void delay500ms (void){unsigned char i,j,k;for (i=15;i>0;i--

". Try "Help". (GDB) R6 0x0 0Undefined Command: "R6". Try "Help". (gdb) R7 0x1c8df0 1871344Undefined command: "R7". Try "Help". (gdb) R8 0xc00 3072Undefined command: "R8". Try "Help". (gdb) R9 0x549ff237 1419768375Undefined command: "R9". Try "Help". (gdb) R10 0x7000806 117442566Undefined command: "R10". Try "Help". (gdb) R11 0x7000806 117442566Undefined command: "R11". Try "Help". (GDB) R12 0xffffffe

to take effect: sudo source/etc/profile. Input: android. If the Android SDK Manager window is displayed, the Environment configuration is successful. 5. Install NDK 1) download NDK ,: http://developer.android.com/sdk/ndk/index.html Select the Linux version. Decompress the package, configure the environment, open the/etc/profile file, and enter the following content at the bottom: [plain] export NDK_HOME =/home/mayliang/programs/android-ndk-r7 export

Describes how to use SWI for an interruption.Privileged mode: A protection mode in which superisor SVC is used by the OS.It is actually an interruption. For hardware users, the interruption mode is defined by the user.1. Understand the available registers of normal user statusR0 ~ R7 universal R8 ~ R12 independent registers [some mode register groups are independent] R13-SP [independent] R14-LR [independent] PC [general] CPSR [independent]R0 ~

00000000Backtrace:[R7 = 44065570 R6 = 4156f04 R5 = 00008000 r4 = 44065570[R5 = ffffffe7 r4 = c67a3720[R7 = 00000000 R6 = 00000008 R5 = 44065570 r4 = c67a3720[R7 = 00000036 R6 = 4156f04 R5 = fffffff7 r4 = c67a3720[R6 = 0000070c R5 = 00030140 r4 = 0002c6e0Code: e24cb004 e59f7064 e1a03800 e1a04823 (e7973104)Solution: cmem. ko is the memory space that can be shared

example, when an open system is called, the library function will eventually call _ syscall (Open). The macro is SWI #__ nr_open, that is, SWI #0x900005 triggers the interruption, 0 X in the [LR, #-4] address, the processor jumps to the ARCH/ARM/kernel/entry-common.S vector_swi read [LR, #-4] address in the interrupt number, then query the sys_call_table system call table in the arch/ARM/kernel/entry-common.S. defined in S, __nr_open corresponds to the sequence number in the table_ Syscall_star

43891f6c R7 42084eb0 I/debug (971): R8 4a570b80 R9 42084ea8 10 42084e94 FP 0011f3e0 I/debug (971): IP a7f0110c SP 4a570b50 LR ae203247 PC 815009ba CPSR a0000030 I/debug (971): #00 PC 000009ba/system/lib/HW/sensors. Default. So I/debug (971): #01 PC 00003244/system/lib/libandroid_servers.so I/debug (971): #02 PC 00011cf4/system/lib/libdvm. So I/debug (971): #03 PC 0003f194/system/lib/libdvm. So I/debug (971): #04 PC 00016cb8/system/lib/libdvm. So I/de

/// /// Blur the image/// /// /// Public static bitmap blur (Bitmap bitmap){ If (Bitmap = NULL){Return NULL;} Int width = bitmap. width;Int Height = bitmap. height; Try{Bitmap BMP return = new Bitmap (width, height, pixelformat. format24bpprgb );Bitmapdata srcbits = bitmap. lockbits (New rectangle (0, 0, width, height), imagelockmode. readonly, pixelformat. format24bpprgb );Bitmapdata targetbits = BMP return. lockbits (New rectangle (0, 0, width, height), imagelockmode. writeonly, pixelformat. f

Label: Data sp c time r BS as informationThe arrangement of data stored on the disk affects the total time of the I/O service.Assume that each track is divided into 10 physical blocks, each of which stores one logical record. Logical record R! Logical records. The logical records R1, R2, Zookeeper, and R10 are stored on the same track. The order of the records is shown in the following table:Physical Block 1 2 3 4 5 6 7 8 9 10Logical record R1 R2 R3 R4 R5 R6

The tiny6410 Development Board supports both NAND and SD startup modes. In my understanding, it means "nc" is not connected. Om [] = 01111, boot_eint [] = 000, refer to the following table to indicate that the SD card is enabled. The switch is not described in the schematic. The LED diagram is as follows: Gpk4, 5, 6, and 7 light-emitting diodes are switched ON when the light-emitting diode is switched on. Arm Assembly MoV command 1: Syntax: 2: 3:

filled with the default value. 2.1 OK, Let's see insert into... on duplicate key update, mysql> insert into t1(a,b) select '3','r5' on duplicate key update b='r5';Query OK, 2 rows affected, 1 warning (0.19 sec)Records: 1 Duplicates: 1 Warnings: 1mysql> select * from t1;+---+----+----+| a | b | c |+---+----+----+| 1 | c3 | c2 || 2 | a | || 3 | r5 | r3 || 5 | r4 | r5 |+---+----+----+4 rows in set (0.00 sec) [] When a = 5, the original C value is still there, which means that when the ke

) create a cache required for the C program to run and allocate 64 K stack space. (8) R2 indicates the cache end address, R4 indicates the last execution address of the kernel, and R5 indicates the start address of the kernel object. Check whether the address conflict exists. Set R5 to R2 so that the kernel address after decompress is after the 64 K stack. (9) Call the decompress_kernel () function of the file Misc. C, decompress the kernel at the end of the cache (after the R2 address ). The re

the vsid, R4 stores the virtual address, R5 stores the Linux page table entry, and R6 stores the Linux PTE before _ page_hashpte, r7 saves the offset to the address (0 when MMU is enabled and-kernelbase: 0xc0000000 when off ). Let's take a look at several hash_page_patches, which involve two functions in hash_low_32.s. create_hpte is relatively simple. The function is to create hpte. In the assembly code, it is to fill R5, as shown below: _ Global (c

address* R5 = start of this image* R2 = end of malloc space (and therefore this image)* We basically want:* R4> = R2-> OK* R4 + image length */CMP R4, r2BHS wont_overwriteAdd r0, R4, #4096*1024 @ 4 MB largest kernel sizeCMP r0, R5BLS wont_overwrite MoV R5, R2 @ decompress after malloc SpaceMoV r0, R5MoV R3, r7BL decompress_kernel Add r0, R0, #127Bic r0, R0, #127 @ align the kernel Length/** R0 = decompressed kernel Length* R1-r3 = Unused* R4 = kernel execution address* R5 = decompressed kernel