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From: http://www.cnblogs.com/logogcn/archive/2010/11/30/ARM_ B _BL.html B or bl commands cause the processor to transfer to the subprogram name for execution. The difference between the two is that the BL command is transferred to the sub- Before the program is executed, copy the address of the next instruction to R14 (LR, link register ). Because the BL command

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Windbg debugging command 8 (BP, Bu, BM, BL, BC, Ba, Be, BD) The following uses skinhgy as an example. 1. BPThe command is inAn addressCan be BP 0x7783feb orBP MyApp! Somefunction. For the latter, windbg will automatically find MyApp! The address corresponding to somefunction and the breakpoint. However, the problem with using BP is: 1) After the code is modified, the function address changes and the breakpoint remains in the same position, not necessa

B or BL directives cause the processor to move to the "subroutine name" to begin execution. The difference between the two is that the BL instruction is transferred to the child Copy the address of the next instruction to R14 (LR, link register) before executing the program. Because the BL directive preserves the ground of the next instruction Address, so using t

B or BL instruction causes the processor to transfer to the "subroutine name" to begin execution. The difference between the two is that the BL instruction copies the address of the next instruction to the R14 (LR, link register) before it is transferred to the sub-program execution. Since the BL instruction saves the address of the next instruction, it is pos

the bl (breakpoint List). Passes is only reduced when the program responds to the g (Go) command and executes through a breakpoint. Single Step or trace (tracing) through it is not reduced. When Passes arrives at 1 , you can reset it by clearing and resetting the breakpoint.Let's try to use BC to remove the previous breakpoint, and then set the breakpoint to be activated at the third run of Loadlibraryw0:> bc* 0: >

Jump instruction is used to implement the program flow jump, in the ARM program there are two ways to achieve the program flow jump: (1) use special jump instructions. (2) write the jump address value directly to the program counter PC. By writing the jump address value to the program counter PC, you can achieve any jump in the 4GB address space, and use it together before jumping MOV LR, PC

. Text : 0000128492 FF FF EB BL __android_log_print . Text: 00001288 E5 LDR R0,[R5 ] ??. PLT:000010d4 __android_log_print . PLT:000010d4 C6 8F E2 ADR R12,0x10dc (0010d4-(001284 + 8))/4 = 00ffff92.Corresponds to the machine code for the A-F FF FF2. THUMB2 Instructions???? (Turn from http://bbs.pediy.com/showthread.php?t=199429))1. Jump backwards0012 00f001f8 Bl. Lhelo. Lh

B Jump instruction: It is a relative jump instruction, its machine code format is as follows:[31:28] bit is the condition code ; [27:24] bit is "1010" ( 0xeaffffff ) when , indicating B Jump Instructions , for "1011" , it means BL Jump instruction; [23:0] represents an offset address. when jumping with B or bl, the address of the next instruction is calculated as follows:expands the 24-bit signed complemen

. text:00001260 A3 EB BL sub_24f4 Current address + (offset 0x1260 + 0X4A3 * 4 + 8 = 24f4Offset = (Destination address-current address-8) >> 2offset = (0x24f4-0x1260-8)/4 = 0X4A3 Assuming that the address at the jump command is a, the address at the destination of the jump is B.The B,BL instruction holds the offset address, which is calculated by:1.b-(a+8). A+8 is the actual value of the PC is a+8 w

. Text:00001260 A3 EB BL sub_24f4 Current Address + (offset Destination Address0x1260 + 0X4A3 * 4 + 8 = 24f4Offset = (Destination address-current address-8) >> 2offset = (0x24f4-0x1260-8)/4 = 0X4A3 Assuming that the address at the jump command is a, the address at the destination of the jump is B.The B,BL instruction holds the offset address, which is calculated by:1.b-(a+8). A+8 is the actua

pat-bl-1029 2017-01-20 string traversal comparison Pit point: The last Test point of the bad key at the end, if the loop out of the condition write a problem (for example, to traverse the end of the string 2) will be an error /** * pat-bl-1029 * 2017-01-20 * C version/#include -fin-

This article mainly introduces the latitude and longitude bl and Cartesian coordinates XY of the positive calculation of PHP code, has a certain reference value, now share to everyone, the need for friends can refer to Here is the Beijing 54 coordinate 6 degree belt. You need to use other coordinates to modify the parameter $_a, $_f. By Latitude to XY: XY warp Latitude:

Generate an image using the code in the RD, GR, and BL methods (non-original, I just complete the Code), grblI open the source code of a piece in the ppm format, and find the tool that can be opened by myself .. (Non original, I processed the code, can directly execute the output, thumbnails can see the effect) This is the original blog http://news.cnblogs.com/n/501488/ I test can be in Visual Studio 2012 run ask a master question ,,It is how to call

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invariant code extrapolation: Move the unchanged code in the loop body outside the loop body;loop unfold: If the number of cycles n is fixed, the loop is removed and the loop body is copied n copies.Codemix will post several plugins that perform such optimizations, and interested readers can contact them or follow their Twitter. There are several different optimizations that can be made about the JavaScript engine, which can be viewed here. Babel plug-ins are limited to performance improvements

Manager, and the mobile phone cannot be correctly connected when running adb devices, the port occupied by the 3rd-party software is generally used. So please: uninstall it! Uninstall it! Uninstall it! Restart your computer and try again.3. The above mobile phone will be unlocked after the connection is normal. After the mobile phone is unlocked, the factory settings will be restored. Please back up data in advance !!!Copy the unlock_bootloader.img file applied for from the official website to

International Online report (Japanese reporter Wang Yang. Zhiye xingnan said that the No. 4 nuclear power plant had a fire that morning. "A fire has occurred in the No. 4 reactor. At present, it is estimated that the heat in the furnace produces hydrogen, which is the same as the hydrogen explosion of No. 1 and No. 3. The nuclear fuel rod itself is not on fire ." Zhiye xingnan also said that the No. 2 reactor may have suffered some damage in this mo

C ++ brush question -- 2713: function --- calculate the power of x to the power of y, set the power of yx to the power of 8x to calculate yCompile the function POW. The function declaration is as follows:Int POW (int x, int y); // evaluate the function declaration of the Power