OPPO R5 (5.2 inches)
OPPO R5 is a OPPO smartphone designed with a slim fuselage, OPPO R5 's fuselage design thickness is only 4.85mm, so in order to make thin, screen also uses a thinner Super AMOLED material, and on the back of the shell of the machine using metal material, the entire back for the three-paragraph design, The overall performance of the machine
; indicates that the next hop is 0.0.0.0 because 10.6.0.0 is originated from the current vrobgp. If it is re-published to BGP, it is the next hop in IGP, the weight of the local originating route is 32768, And the Originn attribute is IGPR2 receives the route from EBGP and forwards it to all its neighbors.*> 10.6.0.0/16 10.0.26.2 0 0 65002 IBecause it is advertised by EBGP, the next hop is the neighbor address of EBGP.R1:*> I10.6.0.0/16 10.0.0.2 0 100 0 65002 IWhether the route learned from IBGP
request at virtual address 56000050An error occurred during kernel access with 56000050来PGD = c3eb0000[56000050] *pgd=00000000Internal Error:oops:5 [#1]Modules linked In:first_drvCpu:0 not tainted (2.6.22.6 #1)PC is at first_drv_open+0x18 (offset of this instruction)/0x3c (total size of the function) [First_drv]The PC is the address of the instruction where the error occurredMost of the time, the PC value will only give an address, not to indicate in which functionLR is at chrdev_open+0x14c/0x1
-aliasing-fomit-frame-pointerEndif-Fstrict-aliasing indicates that the compiler does not direct different types of objects to the same address.-The fomit-frame-pointer option allows the compiler to save fp registers in function calls to improve efficiency.
3) directly optimize performance by replacing C language functions with AssemblyIfeq ($ (TARGET_ARCH), arm)PIXELFLINGER_SRC_FILES + = t32cb16blend. SEndif
4) perform special optimization on different ARM versionsIfeq ($ (TARGET_ARCH), arm)LOCA
Implementation Analysis of osctxsw Based on ARM920T:
First, you must understand that when porting uCOS-II to ARM920T, the following structure of the task stack is used:
Program list: Based onARM920TOfOsctxswImplementation AnalysisNote:ArmSave manuallyPCAndPsw
Osctxsw; Special optimised code below:1. Press the stack separately based on the task stack structure to save the site of the old taskStmf
1). Cam uses a digital camera to connect to the cinema. (Standard Edition)2 ). telesync (TS) uses external audio sources (usually the ear holes set for people with poor hearing ability on the cinema seat), and telesysnc (TS) it is the same as the label of cam. It is in an empty cinema, or using an operator's camera in the projection room. The quality of images is better than that of cam.3). telecine (TC) uses a digital phone to copy data directly from a video. The image and audio quality should
++, GDB, PCRE, PCRE-devel, gawk, make a total of 12 packages;
Test whether cygwin has been installed:
Run cygwin. In the displayed command line window, enter the cygcheck-C cygwin command to print the current cygwin version and running status. If the status is OK, cygwin runs normally.
Input gcc-version, G ++ -- version, make-version, and GDB-version in sequence for testing. If both print the published version and some description information, your cygwin installation is complete!
3. Configure
general HD conversion.Example: Stardust.2007.hdrip.x264.a720.ac3-c-silu.mkv (Stardust Hdrip version)under 8.bdrip--HD, the King of general sharpnessBDRip = Blue-ray Disc Rip, that is, Blu-ray HD conversion, the effect is better than hdrip.Example: awake.2007.bdrip.x264-tlf.mkv (BDRip version of the operation)9.r5--Impatient, you can see this.Most of the R5 are Russia's 5-zone edition, as the North American
0.0.0.0 area 3
7. Configure Area 4
R3 (config) # router ospf 10R3 (config-router) # net 10.1.2.1 0.0.0.0 area 4
R5 (config) # router ospf 10R5 (config-router) # router-id 5.5.5R5 (config-router) # net 172.19.0.0 0.0.1.255 area 4R5 (config-router) # net 10.1.2.2 0.0.0.0 area 4
8. Because Area 3 is not directly connected to Area 0, you need to create a virtual link on R4 and R7.
// The virtual Link parameter is the peer Router ID.R4 (config) # router o
address of the "/system/bin/sh" string, and then call the system () function to achieve our goal.
How to find the gadgets? Although ida or objdump can be used for search, it is time-consuming and laborious. Here I recommend ROPGadget. Because level7 is compiled into the thumb command by default, we also use the thumb mode to find the gadgets:
#!bash$ ROPgadget --binary=./level7 --thumb | grep "ldr r0"0x00008618 : add r0, pc ; b #0x862e ; ldr r0, [pc, #0x10] ; add r0, pc ; ldr r0, [r0] ; b #0x86
What shoshould we do when meet a crash in Android?
Original post address: http://leave001.blog.163.com/blog/static/1626912932011226105512484/
Create a crash
For demonstration purpose, I intentionally created a crash in open_sensors_device of libsensors:
Static int open_sensors_device (const struct hw_module_t * module, const char * Name,
Struct hw_device_t ** device)
{
Int status =-einval;
// If our sensor system is ready, commented next line
// Return status;
Char * PTR = 0;
* PTR = 0;
//....
}
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