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cleared. 3. Migration steps 3.1 establish BGP peer relationships 1) Multiple vrouters at the border of the region establish an iBGP peer relationship ① In the above topology, it refers to R1 and R2, R7 and R8, R3 and R11 ② First run the BGP process and configure its BGP Router-ID ③ Establish a peering relationship with its direct physical interface as the source 2) The core layer router establishes a fully interconnected iBGP peer relationship ① In

inspection capabilities;Virtual electron microscope (Electronic microscope)--visualizing signal propagation in the design;Virtual Test Diagnostic--fast and precise positioning of design flaws and real flaws in silicon componentsDolphin Soc.gds v6.30 for Linux 1CDDolphin.soc.gds.v6.30.linux.x64 1CDDolphin.soc.gds.v6.30.solaris 1CDDolphin.soc.gds.v6.30.solaris64 1CDDolphin Soc.gds v5.6 for HP-UX 1CD　HDL.WORKS.HDL.COMPANION.V2.2.R1 1CD (used to get a good overview of your HDL design and keep it a

axis:Z Axis:Y-AxisX-AxisNote:atan2to beC + +medium function,atan2 (y,x)the practice: whenxthe absolute value ratioyuse when the absolute value is largeatan (y/x); In contrast to useatan (x/y). This guarantees a numerical stability. The above formula means that the camera coordinate system wants to go completely parallel to the world coordinate system (i.e. XC parallel to xw,yc parallel to yw,zc parallel to ZW, and their direction is the same), need to rotate 3 times, set the original camera coo

For the arm system, the mix CILS between functions written in different languages follows the atpcs (ARM-thumb procedure call standard ), atpcs mainly defines the parameter transfer rules for function calls and how to return parameters from functions. For details about atpcs, see section 2.1 of the ads1.2 online books developer guide. Rules for using the simple atpcs register: 1. the subroutine passes through the Register R0 ~ R3 to pass parameters. The register can be recorded as a0 ~ A3. The c

Procedure changes Sp (Stack pointer, R13), FP (Framework pointer, R11), SL (stack restriction, R10), LR (connection register, R14), v1-v8 (variable registers, R4 to R11) and f4-f7, then these registers should be restored to include the value it holds when entering the function at the end of the function. 3. Align. End. Include. incbin pseudo operation(1). Align: used to specify the Data Alignment mode. The

end of the function;If the Function Procedure changes Sp (Stack pointer, R13), FP (Framework pointer, R11), SL (stack restriction, R10), LR (connection register, R14), v1-v8 (variable registers, R4 to R11) and f4-f7, then these registers should be restored to include the value it holds when entering the function at the end of the function. 3. Align. End. Include. incbin pseudo operation(1). Align: used to

, PC} ^; parameter, IP (R12), LR out StackStacksvc DCD (svcstackspace + svc_stack_legth * 4-4) ; /*************************************** **************************************** **************************; ** Function name: osintctxsw; ** Function Description: entry for stopping AND EXITING; ** Input: R3: Status Register CPSR of the current task (that is, the value of spsr); ** R4-R12: R4-R11 of the current task; ** Current processor mode stack struc

r0, string1 MoV R1, string2 MoV R2, #0 Loop: Ldmia R0 !, R3-R11 Stmia R1 !, R3-R11 Add R2, R2, #8 CMP R2, #400 BNE Loop } # Endif Method I is the most common method and uses 1024 cycles. Method J is differentiated based on the platform.The same operation is completed with only 128 cycles of Embedded Assembly. Some may say, why not use standardWhat about the memory copy function? This is because

: 18 _ Cuda ___ cuda_p_hellocuda_168 + 0x0LD. Const. u32 % R4, [% R1 + 4]; // ID: 17 not_variable + 0x0St. Local. u32 [% r2 + 4], % R4; // ID: 18 _ Cuda ___ cuda_p_hellocuda_168 + 0x0LD. Const. u32 % R5, [% R1 + 8]; // ID: 17 not_variable + 0x0St. Local. u32 [% r2 + 8], % R5; // ID: 18 _ Cuda ___ cuda_p_hellocuda_168 + 0x0. Loc 14 20 0MoV. s32 % R6, 0 ;//LD. Param. s32 % R7, [_ cudaparm _ z9hellocudapci_num]; // ID: 16 _ cudaparm _ z9hellocudapci_num + 0x0MoV. u32 % R8, 0 ;//Setp. Le. s32 % P1,

function returns a floating point number, it is put into the floating point register F0 at the end of the function; ? If the Function Procedure changes Sp (Stack pointer, R13), FP (Framework pointer, R11), SL (stack restriction, R10), LR (connection register, R14), v1-v8 (variable registers, R4 to R11) and f4-f7, then these registers should be restored to include the value it holds when entering the functi

following support: arm program and Thumb program call each other; data and code location-independent support; Sub-program reentrant; data stack check support. the other specific atpcs derived from the atpcs are formed by adding other rules on the basis of the Basic atpcs. the purpose is to provide the above functions... Register usage rules: 1. The subroutine passes through the Register R0 ~ R3 to pass parameters. The register can be recorded as a0 ~ A3. The called subroutine does not need to r

__exit my_oops_exit(void) { printk("Goodbye world\n"); } module_init(my_oops_init); module_exit(my_oops_exit); The associatedMakefileFor this module is as follows: obj-m := oops.o KDIR := /lib/modules/$(shell uname -r)/buildPWD := $(shell pwd) SYM=$(PWD) all: $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules Once executed, the module generates the following Oops: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [PGD 7a719067 PUD 7b2b3067 PMD 0 Oops: 000

program call each other; data and code location-independent support; Sub-program reentrant; data stack check support.The other types of derived atpcs are formed by adding other rules on the basis of the Basic atpcs. The purpose is to provide the above functions... Register usage rules: 1. The subroutine passes through the Register R0 ~ R3 to pass parameters. The register can be recorded as a0 ~ A3. The called subroutine does not need to recover the register R0 ~ before returning ~ R3 content. 2

hardware. Implementation of bilinear interpolation texture ing Next, we will use a descriptive code to look at how bilinear interpolation texture ing is implemented. The initialization code is omitted here, and the most important part is: U and V are fixed-point integers in the 16.16 format D. U and DV are floating point du = (U 0 xFFFF)/65536.0 dv = (V 0xFFFF) / 65536.0 invdu = 1.0 - du invdv = 1.0 - dv // Calculate the respective weights based on the distance to the adjacent four pixels. we

register is 64-bit wide and they are:Rax, RBx, rcX, RDX, RSI, RDI, RSP, RBPR8, R9, R10, R11, R12, R13, R14, R15At the same time, the x86-64 fully supports General registers for x86-32 and x86-16:Eax, ax, Al, ah,EBX, BX, BL, BH,However,When performing inbound/outbound stack operations on registers, only the corresponding 64-bit registers can be inbound/outbound., That is:(Instructions that modify the stack (push, Pop, call, RET, enter, and leave) are

Thread_infoSysret_check:lockdep_sys_exit disable_interrupts (clbr_none) Trace_irqs_off movl ti_flags+thread_info (%RSP, Rip-argoffset),%edxAndl%edi,%edxJNZ sysret_careful//If there is thread_info flags to deal with, such as Need_resched ////Direct returnCfi_remember_state/* * Sysretq'll re-enable interrupts: */trace_irqs_on movq Rip-argoffset (%RSP),%RCXCfi_register RIP,RCX Restore_args1,-arg_skip,0 /*cfi_register rflags,r11*/ //Restore the top ad

, =gvarLDR R1, [R0]mov R2, #2Mul R3, R1, R2STR R3, [R0]mov pc, LREndIn this example, the assembly file and the C file pass the global variable Gvar and function asmdouble, note that the declaration of the keyword extern and import atpcs function Call rule: atpcs Specify the basic rules for calling between subroutines, the usage rules of the registers, the rules for using the stack, and the rules for passing parameters. 1 Registers use the rule subroutine to pass the parameter between the regis

impossible to write an operating system on it? So, in order to obtain the efficiency of the program, we have to adopt a flexible Method-embedded assembly, mixed programming. As an example, assigning an array to array two requires that each byte match. Copy Code code as follows: Char string1[1024],string2[1024]; method I Copy Code code as follows: int I; for (I =0; i* (string2 + i) = * (string1 + i) Method J Copy Code code as follows:

Lenovo Zhaoyang e42-80 Qualcomm QCA9377 installation Ubuntu14.04 cannot use Wi-Fi solution Lenovo Zhaoyang E42-80 Notebook uses the Wi-Fi QCA9377, and the latest Ubuntu 14.04 system kernel uses 4.4, the kernel online a lot of information on the QCA9377 support problems, 4.5 kernel has been perfect support. Follow the method given by Lenovo Zhaoyang k20-80 installation Solution (http://blog.csdn.net/ssy_neo/article/details/51786044) that is not available for Ubuntu Wi-Fi, upgrade the kernel first

About the parameters of the arm sub-function definition in the rules of the register, there are many articles and books on the internet, but there are many students do not understand the basic knowledge, here to pick up some of the online introduction, briefly. For ARM systems, the calls between functions written in different languages (mix calls) follow Atpcs (Arm-thumb Procedure call standard), Atpcs mainly defines the pass rules for parameters when a function is called and how to return from