0 0x00000000 finished.1 0x00000001 incorrect function.2 0x00000002 the system cannot find the specified file.3 0x00000003 the system cannot find the specified path.4 0x00000004 the system cannot open the file.5 0x00000005 Access denied.6 0x00000006 Invalid code.00000007 x the bucket control block has been destroyed.8 0x00000008 insufficient storage space, unable to process this command.The block address of the 9 0x00000009 bucket control is invalid.Th
will introduce the accuracy of the number format. As we have already said, accuracy and accuracy are a confusing concept.
Then, let's give a comment on the Accuracy. Simply put, it represents the deviation between the number represented by the numeric format (in a specific environment) and the real number. The higher the accuracy, the smaller the error between the number expressed in the number format and the value of the real number. The lower the accuracy, the greater the error between the nu
Reprint Address: http://blog.csdn.net/21aspnet/article/details/6729724First, the conceptAlignment is related to the location of the data in memory. If the memory address of a variable is exactly the integer multiple of its length, he is called natural alignment. For example, under a 32-bit CPU, assuming an integer variable has an address of 0x00000004, it is naturally aligned.Second, why byte alignmentThe root cause of the need for byte alignment is the efficiency of CPU access data. Assuming th
As described in the android documentation, the SDK level (integer) the phone is running is available in:Android. OS. Build. VERSION. SDK_INT;The enum corresponding to this int is in the android. OS. Build. VERSION_CODES class.
Code example:Int currentapiVersion = android. OS. Build. VERSION. SDK_INT;If (currentapiVersion> = android. OS. Build. VERSION_CODES.FROYO ){// Do something} Else {// Do something}
Note:This SDK_INT is available since Donut (android 1.6/API4)So make sure your application i
Involved procedures:GETDescription:Ibm http Server Remote Overflow caused by the submission of ultra-long GET requestsDetails:The ibm http server is a web server. This vulnerability exists in Windows NT versions.If you submit a GET request with more than 219 characters, the server stops responding and reports an error. To restore the normal operation of the service, restart the application. Attackers can exploit this vulnerability to execute any code on the affected host. (But this is not yet fu
x86 platform has LDD can be very convenient to view the dependencies of the library, but in the embedded Linux environment does not have this command, instead of it iscc=$ (cross_compile) gccldd=$ (Cross_compile) readelfExample[Plain]View PlainCopy
$ (cross_compile) readelf-d Sdkdemo_video
Dynamic section at offset 0x1a88 contains entries:
Tag Type Name/value
0x00000001 (NEEDED) Shared library: [libtxdevicesdk.so]
0x00000001 (NEEDED) Shared library: [libpthread.so.0]
0x00000001 (NE
int Result_error_no_service indicates that the service is currently unavailable with a value of 4 (0x00000004)
public static final int RESULT_ERROR_NULL_PDU indicates that PDU is not provided with a value of 3 (0x00000003)
public static final int Result_error_radio_off indicates that the wireless broadcast is explicitly closed with a value of 2 (0x00000002)
public static final int Status_on_icc_free represents free space with a value of 0 (0x00000000)
public static final int Status_on_i
Name Value Usage Fmtid_summaryinformation {f29f85e0-4ff9-1068-ab91-08002b27b3d9} the Summary information property Set Fmtid_docsummaryinformation {d5cdd502-2e9c-101b-9397-08002b2cf9ae} the Documentsummaryinformation and UserDefined Property sets Fmtid_userdefinedproperties {d5cdd505-2e9c-101b-9397-08002b2cf9ae} the Documentsummaryinformation and UserDefined Property sets
Name
Property ID String
Property ID
VT Type
Title
Pidsi_title
0x00000
single digit in the register are as follows:
(From Datasheet of mt48lc4m32b2)
The data must be correctly configured so that Ram can work correctly. The next step is the configuration of the memory Protection Unit (MPU). The combination of the two is the initialization and configuration of RAM by jlink.
The ram_debug.ini file is as follows:
INCLUDE MT48LC4M32LFB5.iniInitSDRAM(); // Initialize memoryLOAD ..\SDRAM_obj\uc1788.axf INCREMENTAL // Download program/
following two attributes involve loading the command segment and specify the number and size of commands.
Finally, the status information is obtained, which may be used by the kernel during loading and execution.
The load command section contains a list of commands that tell the kernel how to load various original segments in the file. A typical description of how to align and protect the layout of each segment and each segment in the memory.
View the load command list in the file and use the-l
At the end of the article, I made a picture and understood it at a Glance. I have talked a lot about this issue on the Internet, but I have not thoroughly explained it.
I. ConceptsAlignment is related to the location of data in the memory. If the memory address of a variable is exactly an integer multiple of its length, it is called a natural alignment. For example, if the address of an integer variable is 0x00000004 under a 32-bit cpu, it is naturally aligned.Ii. Why byte alignmentThe root caus
0x080483a0
0x080483a2
0x080483a5
0x080483a8
0x080483a9
End of worker er dump.
(GDB) Si
0x0804839d 3 int e = C + D;
(GDB) Si
0x080483a0 3 int e = C + D;
(GDB) Si
0x080483a2 3 int e = C + D;
(GDB) Si
4 return E;
(GDB) Si
5}
(GDB) BT
#0 bar (C = 2, D = 3) at main. C: 5
#1 0x080483c2 in Foo (A = 2, B = 3) at main. C: 9
#2 0x080483e9 in main () at main. C: 14
(GDB) info registers
Eax 0x5 5
ECX 0xbff1c440-1074674624
EdX 0x3 3
EBX 0xb7fe6ff4-1208061964
ESP 0xbff1c3f4 0xbff1c3f4
EBP 0xbff1c404 0x
corresponding parameter blocks are filled:
In this case, the buffer is filled with the data to be programmed.
After the programming is complete, the control is handed back to trace32, And the status is returned in the parameter table:
If no error occurs, the above programming process will continue until all data in application. Bin is transferred.
Flash Programming Software
The Flash programming software process is as follows:
1) define the data structure of the parameter block:Struct flashpa
is EDGEConstant Value: 2 (0x00000002) (2.75G) 2G to 3G transitional Mobile and China Unicom public static final int NETWORK_TYPE_UMTSCurrent network is UMTSConstant Value: 3 (0x00000003) (3G) unicom ----------------- Added in API level 4 ------------------- public static final int NETWORK_TYPE_CDMACurrent network is CDMA: Either IS95A or IS95BConstant Value: 4 (0x00000004) (2G Telecom) public static final int NETWORK_TYPE_EVDO_0Current network is EVDO revision 0 Constant Value: 5 (
in systemlist_mempool -- list memory pool in systemlist_timer -- list timer in systemlist_device -- list device in systemlist -- list all symbol in System -- Variable list: dummy -- dummy variable for finsh 0, 0x00000000
List_thread () to view all threads running in the current system
finsh> list_thread () thread pri status SP stack size Max used left tick error -------- ---- ------- ---------- -------- --- tshell 0x14 ready 0x00000110 0x00000800 0x000001e8 0x00000008-04 Tidle 0x1f ready 0x
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