r5 spotify

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ADBI Learning: So hook implementation mechanism

,[pc, #0]. We know that the PC value is the currently executing instruction +8, i.e. the PC value is h->jump[2] = the value of the custom function. OK, that's the equivalent of a jump to execute a custom function. Here's a look at the thumb assembly instructions: if((unsignedLong int) Hook_thumb%4==0) Log ("warning Hook is not thumb 0x%lx\n", (unsignedLong) hook_thumb) H->thumb =1; Log ("THUMB using 0x%lx\n", (unsignedLong) hook_thumb) H->patch = (unsignedint) Hook_thumb; H->orig =addr; H->jumpt

BGP comprehensive experiment

Perform the following experiment in the previous IGP. Lab requirements: 1. EBGP: R3---R2 R4---R3 R2---R1 2, IBGP: R2---R4 R4---R5 R2---R5 3. All BGP neighbor relationships are established using LO0 for update source (except for R2-R1 ). Use X. X. X. X as the router-id 4. R3 announcement lo20: 200.200.1.0/24. R5 should select R2. 5.

CPU Disorderly Execution

, the compiler thinks that the result of *q at this time should be the last *p value, will optimize the process of taking the number from the *p, the value of the *p stored in the register directly to *q (POWRPC assembly):Li R5, 2 STW R5, 0 (R3) STW R5, 0 (R4) //write R5 to *qHowever, if you add the volatile

Dockerfile maven Plugin and extensions

As a docker project, dockerfile files are built, tagged, and published. If you can include these operations on the Dockerfile file in Maven lifecycle management, it will greatly simplify the build and release process of the Docker project. Dockerfile maven is a maven plugin from Spotify that also includes a MAVEN extension that assists with Dockerfile file building, labeling, and publishing in a Docker project (with Maven management).

ARM assembly mean filter Experiment

The experiment requires that the maximum minimum value be removed after sorting, and then the remainder is averaged.Sorting can be sorted with previous bubbles, and the key question is averaging. Because ARM does not have division, how should the average be asked?The simplest way is to subtract, use dividend to subtract the number, see how many times it can be reduced.However, to round up, because the registers are integers, the remainder is compared to half of the divisor, and if it is greater

Cleverly set the yum software library to easily solve software package Installation Problems

installation disc to the optical drive, mount it to a directory, and copy all the content of the disc to the/media/cdrom directory. [Root @ oracle ~] # Mount/dev/cdrom/mnt/iso [Root @ oracle iso] # cp-r */media/cdrom/ 3) modify the rhel-debuginfo.repo file under the/etc/yum. repos. d/directory, edit bashurl to write your own CD path [Root @ oracle yum. repos. d] # cp rhel-debuginfo.repo rhel-debuginfo.repo.bak [Root @ oracle yum. repos. d] # vi rhel-debuginfo.repo

Arm Compilation Basics (iOS reverse)

+ offsetIn addition, LDR and STR variants LDRD and STRD can also operate the double word (doubleword), that is, one-time operation of two registers, the basic format is as follows: Op{cond} rt,rt2, [Rn {, #offset}]The usage is similar to the prototype, as follows: STRD R4,R5, [R9,#offset] ; *(R9 + offset) = R4;*(R9 + offset + 4) = R5 Ldrd R4,

Single-chip computer delay C language Program

(Crystal oscillator 12MHz, a machine cycle of 1us.) A. 500MS Delay sub-Program Program: void delay500ms (void) { unsigned char i,j,k; for (i=15;i>0;i--) for (j=202;j>0;j--) for (k=81;k>0;k--); } Produced by the Assembly: c:0x0800 7f0f MOV R7, #0x0F c:0x0802 7ECA MOV R6, #0xCA c:0x0804 7d51 MOV R5, #0x51 c:0x0806 ddfe djnz r5,c:0806 c:0x0808 DEFA djnz r6,c:0804 c:0x080a DFF6 djnz r7,c:0802 c:0x080c RET Calcu

Linux Kernel Startup Process Analysis (2)

# Ifdef config_cpu_icache_disable Bic r0, R0, # cr_ I # Endif MoV R5, # (domain_val (domain_user, domain_manager) | \ Domain_val (domain_kernel, domain_manager) | \ Domain_val (domain_table, domain_manager) | \ Domain_val (domain_io, domain_client )) MCR P15, 0, R5, C3, C0, 0 @ load domain access register MCR P15, 0, R4, C2, C0, 0 @ load page table pointer B _ turn_mmu_on Endproc (_ enable_mmu) _ Turn_mmu

Domino server performance optimization

sufficient disks and controllers. You can use the NotesBench benchmark data of the hardware vendor as a guide. (2) Allocating I/O through physical disks Generally, physical and logical disk structures are system resources that people often ignore and are the most frequently overloaded. The best way to improve performance on many Domino servers is to allocate I/O through different physical disks.Ideally, put the following I/O-related documents on different physical disks:1) webpage documents on

Mpls vpn L3 PE-CE static explanation

, there are also bgp vpnv4 neighbors. run the show ip bgp vpnv4 all summary command to view the information. here, the VPNV4 neighbor relationship has been established, and the RT/RD can be carried to the peer end. (private group attributes cannot be passed, so you need to specify a command to enable the transfer ). for RT, on the PE device, both the export and import must correspond to the following: ||||||||| after vrf is configured, the vrf address family is automatically generated in BGP. \/

Tiny4412 Linux Kernel boot process

svc MODE @ andIRQs disabled @ Check if CPU ID matches MRC P15,0, R9, C0, C0 @ Get processor ID BL __lookup_processor_type @ r5=procinfo r9=CPUIDmovs R10, R5 @ Invalid processor (r5=0)? THUMB (IT eq) @ Force fixup-able Long Branch encoding beq __error_p @ Yes, error'P'#ifdef config_arm_lpae MRC P15,0, R3, C0, C1,4@ Read Id_mmfr0 andR3, R3, #0xf @ Extract Vmsa sup

"Go" MySQL replace into with INSERT into on duplicate key update real difference

fields fill the default values, can be understood to delete duplicate key record, new insert a record, An operation that deletes the original record and then inserts . 1.3 But do not know the auto_increment of the primary key has no effect, next test:mysql> INSERT INTO T1 (b,c) Select ' R4 ', ' R5 '; Query OK, 1 row affected (0.05 sec) records:1 duplicates:0 warnings:0 mysql> select * from T1; +---+----+----+ | A | B | C | +---+----+----+ | 1 | C3 |

MPLS + BGP advanced features

MPLS + BGP advanced featuresWill LDP allocate tags for BGP routes? Why? --- Previously we mentioned that LDP assigns tags to IGP and never assigns tags to BGP. the following uses an experiment to illustrate how LDP + BGP works. forwarding method of a pure IP Network: In this topology, R1 and R4 establish an EBGP neighbor. r3 and R5 establish EBGP neighbors. build an IBGP neighbor between R1 and R3. IGP protocol between R1-R2-R3 is OSPF. network 44.1.1

MPLS + BGP Advanced Features

Technorati Tags: mpls,bgp,ccie, tags, LDPWill LDP assign tags to BGP routes? Why?650) this.width=650; "Style=" background-image:none;border-bottom:0px;border-left:0px;padding-left:0px; padding-right:0px;border-top:0px;border-right:0px;padding-top:0px; "title=" clip_image002 "border=" 0 "alt=" clip_ image002 "src=" http://s3.51cto.com/wyfs02/M02/73/F4/wKiom1YKXeDji6JDAADrM1sEj0Q970.jpg "height=" 178 "/>Before---We said that LDP assigns tags to IGP and never says to assign a label to BGP.Here's an

Detailed description of the boot function of the MDK Compiler

e8ba000f LDM R10 !, {R0-r3}0x08000156 f0130f01 TST R3, #0x010x0800015a bf18 it ne0x0800015c 1afb subne R3, R7, r30x0800015e f00000301 Orr R3, R3, #0x010x08000162 4718 BX r30x08000164 1d60 dcw 0x1d600x08000166 0000 dcw 0x00000x08000168 1d80 dcw 0x1d800x0800016a 0000 dcw 0x0000 _ Decompress:0x0800016c using a add R2, R2, r10x0800016e f8127b01 ldrb R4, [R0], #0x010x08000172 f014050f ands R5, R4, # 0x0f0x08000176 bf08 it EQ0x08000178 f8105b01 ldrbeq

Arm command bne. w is changed to B, that is, unconditional jump, armbne. w

compares the sizes of two operands.ADD R3, R2, R1, LSR #2; R3R2 + R1 limit 4ADD R3, R2, R1, LSR R4; R3R2 + R1 20172r4LDR R0, [R1]; R0 1_[ R1] transfers the data in the memory with the R1 value as the address to R0.STR R0, [R1]; [R1] 1_r0 transfers the R0 value to the memory where the R1 value is the address.Base Address addressingLDR R0, [R1, #4]; R0 1_[ R1 + 4]LDR R0, [R1, #4]!; R0 1_[ R1 + 4], R1 1_r1 + 4LDR R0, [R1], #4; R0 1_[ R1], R1 1_r1 + 4LDR R0, [R1, R2]; R0 1_[ R1 + R2]LDR R0, [R1, R2

ARM-based Linux Startup Analysis Report-arm + Linux Startup analysis (3)

(9) Call the decompress_kernel () function of the file Misc. C to decompress the kernel at the end of the cache.(After the R2 address ). The register values are changed as follows:R0 indicates the size of the extracted kernel.R4 is the address when the kernel is executedR5 is the start address of the kernel after decompression.R6 is the CPU type value (processor ID)R7 is the system type value (Architecture ID)(10) after the reloc_start code is copied to the kernel (

Linux system Driven Development Debugging Technology Guide Tutorial

ip:c3871f54 FP:C3871F50r10:4021765c r9:c3870000 r8:00000000r7:00000004 r6:c3871f78 r5:40016000 r4:c38e5160r3:c3871f78 r2:00000004 r1:40016000 r0:00000000FLAGS:NZCV IRQs on Fiqs on Mode svc_32 Segment usercontrol:c000717f table:33894000 dac:00000015Process sh (pid:745, stack limit = 0xc3870258)Stack: (0xc3871f44 to 0xc3872000)1f40:c3871f74 c3871f54 c0088eb8 bf00608c 00000004 c38e51801f60:c3871f78 00000000 c3871fa4 c3871f78 c0088ffc C0088e04 00000000 0

Linux programming highlights

who wants to develop X Windows software *** X Window User: Vol 3. X Window System User's Guide (for X11R5) [O 'Reilly] Xlib programming: Intro. to The X Window System, oliver jones, [Prentice Hall] Network transparency X Windows System (Chinese translation) [songgang] Vol 2. X lib Reference Manual (X11R4/R5) [O 'Reilly] Motif programming: Vol 6A. Motif Programming Manual (for OSF/Motif 1.2) [O 'Reilly] Vol 6B. Motif Reference Manual (for OSF

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