chromebook r11

STG % R1, 0 (% R15)(GDB)32 do_one_thing ( doink );1: X/I $ pswa 0x800007a8: 41 C0 F0 A0 la % R12, 160 (% R15)(GDB)30 doink. boik = R1;1: X/I $ pswa 0x800007ac: C0 10 00 00 08 C2 larl % R1, 0x80001930(GDB)0x800007b2 30 doink. boik = R1;1: X/I $ pswa 0x800007b2: E3 10 F0 A0 00 24 STG % R1, 160 (% R15)(GDB)32 do_one_thing ( doink );1: X/I $ pswa 0x800007b8: B9 04 00 2C lgr % R2, % R12(GDB)0x800007bc 32 do_one_thing ( doink );1: X/I $ pswa 0x800007bc: C0 E5 FF 68 brasl % R14, 0x8000068c(GDB)Do_on

determine whether G is greater than B, which is the optimization method 1. Next, let's look at the optimization of R2. For the convenience of expression, we make sum = R + G + B and expand the judgment condition R2: In theory, the last step is multiplied by 156 at the same time. In theory, 156 × 0.33 = 51.48, and 52 should not be taken. However, this 0.33 is originally an empirical data. Who would say it cannot be 1/3. At this point, we can see that there is a floating point number 0.0624 at t

IOS program cracking-ARM Assembly basics and iosarm Assembly Basics 　　Here: http://www.cnblogs.com/mddblog/p/4951650.html I. Thumb and ARM commandsThe Thumb command is 16 bits, so the storage code density is high, saving storage space. However, the function is incomplete. It is only a supplement to the ARM Instruction Set (32-bit) and is a subset of the ARM instruction set. In the initial stage, we do not need to understand this knowledge, as long as there is a concept to know that there is such

Stack Overflow Attack series: shellcode in linux x86 64-bit attacks get root permissions (1) how to execute functions, shellcoderoot There are already many examples of stack overflow on the Internet, but it rarely involves 64-bit linux related to the operating system. Recently, I have been researching this, so I wrote a series of blog posts, one is to help you remember, and the other is to help more people explore each other.Register The X86-64 has 16 64-bit registers: % rax, % rbx, % rcx, % rdx

Easy to understand 1,SW1:Interface ethernet0/0, 1, 2, 3Switchport trunk allowed VLAN add 12 VLAN 200No shut Sw2:Interface vlan12IP address 172.16.0.22 255.255.255.252 R7:Ip dhcp poolDefault-router 172.16.100.1 2,R12:AAA authentication PPP default group TACACS + local Int S4/0PPP authentication chap IP local pool P17 145.67.89.22 R17:No username R12 password Cisco 3,R21, R22:No prefix-suppression in OSPF Process R21:Interface ethernet0/0No ip ospf hel

address in R14. All R14 instances must be saved to other registers (not actually valid) or a stack. This register has a shadow Register in each processor mode. Once the connection address has been saved, this register can be used as a general register.Register 15 is the program counter. In addition to holding the 26-digit number of the address currently used by the instruction program, it also holds the status of the processor.Provide the following charts for clarity: User Mode SVC mode IRQ mod

(SNO, deptno) andS12 (classno, deptno ),Then, Project R to the attributes of S11 and S12, and obtain the relationship R11, such as table 5-15, and R12, such as table 5-16. Table 5-15 SnO Deptno S1 D1 S2 D2 S3 D2 S4 D1 Table 5-16 Classno

, (stack_sp2-1-(int) psselibbase), Gettid (), Reg_r0,reg_r1,reg _R2,REG_R3,REG_R4,REG_R5,REG_R6,REG_R7,REG_R8,REG_R9,REG_R10,REG_R11,REG_R12);}Inside the specific parameter meaning is later said.Printallreg to be called by a transit function, this function must meet the following requirements:1. the value of the R0-r12,LR Register cannot be changed before and after the call2. after calling the print function, skip to the old function3. put the monitoring address into the stack, this requirement

The frame and POS data structures in the Kuka robot system contain six parameters: {X, y,z,a,b,c}. These parameters correspond exactly to the six parameters in the angular coordinate system representation, X,y,z,alpha,beta,gama, and Alpha=a,beta=b,gama=c.Suppose that in a robotic system {A} is a reference coordinate system, {B} is a tool coordinate system, and the representation of the relative A is {x,y,z,a,b,c}, and the {b} coordinate systems have a point of BP, the coordinate APS under {A} ca

: // Unchecked conversion from Holder to Holder 79: // Unchecked method invocation: exact1 (Holder 80: // is applied to (Holder)81: Long r2 = exact1 (qualified );82: Object r3 = exact1 (unbounded); // Must return Object83: Long r4 = exact1 (bounded );84:85: // Long r5 = exact2 (raw, lng); // Warnings:86: // Unchecked conversion from Holder to Holder 87: // Unchecked method invocation: exact2 (Holder 88: // is applied to (Holder, Long)89: Long r6 = exact2 (qualified, lng );90: // Long r7 = exact2

. Char string1 [1, 1024], string2 [1024]; Method I Int I; For (I = 0; I * (String2 + I) = * (string1 + I) Method J # Ifdef _ pc _ Int I; For (I = 0; I * (String2 + I) = * (string1 + I ); # Else # Ifdef _ ARM _ _ Asm { MOV 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 cyc

implementsjava.io.Serializable {privatevolatile longvalue;/*** Creates a new AtomicLong with the given initial value.** @param initialValue the initial value*/public AtomicLong(longinitialValue) {value = initialValue;}/*** Creates a new AtomicLong with initial value {@code 0}.*/publicAtomicLong() {} Its CAS source code core codes are: 123456789 intcompare_and_swap (int* reg, intoldval, intnewval) {ATOMIC();intold_reg_val = *reg;if(old_reg_val == oldval) *reg = newval;EN

above command is relatively simple, that is, two values to add. ADC R0, R1, R2; R0 = R1 + R2 + C (Carry) With the addition of carry, the ADC will add up to two operands and place the result in the destination register. The ADC uses the c--carry flag so that it can do more than 32-bit additions. Below is the assembly code of the 128-bit number for the addition operation. We are now going to add a 128-bit number because we are using a 32-bit register, so to store a 128-b

,cpsr Ldmfd SP, {fp, SP, PC} END//ASM_C.C/*according to the "Arm-thumb Procedure Call standard": R0-R3 is used as an incoming function parameter, and the outgoing function returns a value. The R0-R3 can be used for any purpose between subroutine calls. The called function does not have to recover R0-R3 before returning. If the calling function needs to use R0-R3 's content again, it must retain the content. R4-r11 is used to store local variab

the criteria). Where statistical conditions can be numeric, tabular, or text. The simple understanding is countif (where to count, according to what counts). The table shown in Figure 1 is still taken as an example. If we enter the formula "=countif" ($B $: $B $11, "Class 2"), then naturally you can get the number of cells in the B2:B11 range with the value "Class 2". Therefore, D14 cell to Statistics 2 class language average score is much simpler, only need to input formula "=d13/countif ($B

this is a bit extreme, it has its own truth. Assembly language is the most efficient computer language, but it is 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. The code is as follows: Char string1[1024],string2[1024]; Method I The code is as follows: int I; for (I =0; i * (string2 + i

, r7:32CFI Resource r8:32, r9:32, r10:32, r11:32, r12:32, r13:32, r14:32CFI Endnames CFINames0CFI Common CFICommon0 Using CFINames0CFI Codealign 2CFI Dataalign 4CFI returnaddress R14 CODECFI CFA r13+0CFI R0 SamevalueCFI R1 SamevalueCFI R2 SamevalueCFI R3 SamevalueCFI R4 SamevalueCFI R5 SamevalueCFI R6 SamevalueCFI R7 SamevalueCFI R8 SamevalueCFI R9 SamevalueCFI R10 SamevalueCFI R11 SamevalueCFI R12 Samevalu

OSCTXSW ; SAVE current TASK ' S CONTEXT: stmfd sp!, {lr} ; Push return address, ; The STMFD command is a full stack decrement, that is, the instruction Stmdb (the address first minus the stack) after the content in the LR is pressed into the SP minus 1 points to the position of the stmfd sp!, {lr} Ibid. stmfd sp!, {r0-r12} ; Push Registers, MRS R0, CPSR; Push current CPSR,TST LR, #1; If called from Thumb mode,Orrne R0, R0, #OS_CPU_ARM_CONTROL_THUMB; If Yes, set the t-bit.Stmfd

requires an integer portion up to 10 bits and a fractional part of 2 bits Insert 3 records in the table, C_name "Zhangsan", "Lisi", "Wangwu", c_city try to write "Beijing", "Shanghai" ... INSERT INTO customers values(1, "Zhangsan", +, "M", "Beijing", 8000),(2, "Lisi", +, "F", "Shanghai", 10000),(3, "Wangwu", "M", "Shenzhen", 3000); 2, create an order form orders, the field requirements are as follows:o_id Integral typeO_name character type, variable length, width 30O_price floating-point type,

is as follows: [CPP] view plain copy addr0,r1,r2 nbsp;@r0=r1+r2 Addr0,r1, #256 @R0=R1+256 addr0,r2,r3,lsl#1@r0 =R2+ (r3 2.2 with carry addition instruction ADC adc{conditions}{s} purpose register, operand 1 NBSP;ADC instruction is used to add two operands, plus the value of the C condition flag in CPSR, and store the results in the destination register. It uses a carry flag bit so that you can do the addition of a number larger than 32 bits, and be careful not to forget to set the S s