This PPT discusses the concept of Dynamic Linker as in Linux and its porting to Solaris ARM platform. It starts from the very basics of linking process
Exploiting the Linux Kernel via Intel's SYSRET Implementationnkslides
Intel handles SYSRET instructions weirdly and might throw around exceptions while still being in ring0. When the kernel is not being extra careful when returning to userland after being signaled with a syscall bad things can happen. Like root shells.
Interstage buffer B1 feeds the Decode stage with a newly-fetched instruction.
Interstage buffer B2 feeds the Compute stage with the two operands
Interstage buffer B3 holds the result of the ALU operation
Interstage buffer B4 feeds the Write stage with a value to be written into the register file
This PPT discusses the concept of Dynamic Linker as in Linux and its porting to Solaris ARM platform. It starts from the very basics of linking process
Exploiting the Linux Kernel via Intel's SYSRET Implementationnkslides
Intel handles SYSRET instructions weirdly and might throw around exceptions while still being in ring0. When the kernel is not being extra careful when returning to userland after being signaled with a syscall bad things can happen. Like root shells.
Interstage buffer B1 feeds the Decode stage with a newly-fetched instruction.
Interstage buffer B2 feeds the Compute stage with the two operands
Interstage buffer B3 holds the result of the ALU operation
Interstage buffer B4 feeds the Write stage with a value to be written into the register file
Virtual Memory
• Copy-on-Write
• Page Replacement
• Allocation of Frames
• Thrashing
• Operating-System Examples
Background
Page Table When Some PagesAre Not in Main Memory
Steps in Handling a Page Fault
There are situations, called hazards, that prevent the next instruction in the instruction stream from executing during its designated cycle
There are three classes of hazards
Structural hazard
Data hazard
Branch hazard
JDK stand for java development kit.
JVM stands for Java Virtual Machine.
JRE is the responsible unit to run the java program.
JIT stands for Just In Time compiler.
Evolution of Programming Languages Over the Yearsdesigns.codes
Computer is becoming more user-friendly by the day. The various programming languages that is used for various operations have become simpler. This was not an overnight process and scientists and mathematicians has been working for a few centuries now to make it more compatible and user friendly.
Virtual Memory
• Copy-on-Write
• Page Replacement
• Allocation of Frames
• Thrashing
• Operating-System Examples
Background
Page Table When Some PagesAre Not in Main Memory
Steps in Handling a Page Fault
There are situations, called hazards, that prevent the next instruction in the instruction stream from executing during its designated cycle
There are three classes of hazards
Structural hazard
Data hazard
Branch hazard
JDK stand for java development kit.
JVM stands for Java Virtual Machine.
JRE is the responsible unit to run the java program.
JIT stands for Just In Time compiler.
Evolution of Programming Languages Over the Yearsdesigns.codes
Computer is becoming more user-friendly by the day. The various programming languages that is used for various operations have become simpler. This was not an overnight process and scientists and mathematicians has been working for a few centuries now to make it more compatible and user friendly.
This slide is about new latest technology developed by Google that is know as project ARA. The concept of new kind of modular smart phones will be all around the world very soon.
The slide is about the new technology "ARA" that is being developed by Google. The concept of modular smartphone that is cheap and will be available soon in the market. This will create a history in the world of smartphones.
Project Ara is a development effort to create a modular hardware ecosystem--rivaling mobile apps in the pace and level of innovation--around smartphones, with the goal of delivering the mobile internet to the next 5 billion people.
2. Project Ara is the codename for an
initiative by Google that aims to
develop a free, open hardware
platform for creating
highly modular smartphones.
3. Ara is about opening hardware in the same way Android has
opened software – put it in the hands of the many as opposed
to the grip of a few.
The goals is to democratize the hardware ecosystem, break it wide open, basically
disintermediate the OEMs.
4. Google's Advanced Technology and Projects
(ATAP) group is in charge of Project Ara.
The head of Project Ara, Paul Eremenko
5. Ara phones are built using
modules inserted into metal
endoskeletal frames known as
“Endos". It acts as the switch to
the on-device network linking all
the modules together.
6.
7. Modules can be anything
like a display, processor,
keyboard, battery, camera,
gamepad, etc.
Modules can be built by
any developer using the
open source MDK
(Module Developers Kit)
which is already
available.
8.
9.
10.
11. Ara phones will use
Electropermanent magnets to
hold all the modules in place.
The modules will use Capacitive
Interconnect pads instead of
pins as a communication
channel.
A new communication standard called UniPro will be utilized by modules which provides
10 gigabits of throughput to most modules from the on-device network with a couple-
microsecond latency.
12.
13. Project Ara is working with 3D Systems to develop a new kind of 3D
printer that's capable of mass producing custom shells (the plastic
pieces on the back of each module).
14. Google will host the store that sells the modules and also will sell the plastic, 3D-printed
shells.
15. Advantages of Ara phones:
• Phones is very cheap.
• You only buy the features that you want.
• Your phone could last indefinitely.
• Repairs are easier and cheaper.
• You could have two versions of your phone.
16. Disadvantages of Ara phones:
• It will be bigger and heavier
than a standard phone.
• The connectors are bound to
cause problems.
• Certain combinations won’t
work.
• It won’t be optimized.
• How many combinations can
there really be?
17. The first model of the
modular phone “Grey Phone”
is scheduled to be released in
January 2015.
The first model will cost around $50.
18.
19. Want to know more then just Google it.
Thank You