Search results for "x86"
showing 3 items of 3 documents
MansOS
2010
Often software for wireless sensor networks (WSNs) is developed using a specific event based operating system (OS) such as TinyOS. However, this requires steep learning curve for the new developers. Other operating systems for embedded devices have limited support for new hardware platforms. Our goal is to provide an operating system for resource constrained devices that is easy to use for the wide range of researchers and developers familiar with C programming language and Unix operating system concepts. In addition, we provide a framework for agile portability to new hardware platforms, due to the nature of WSN systems that require specific hardware or features for the sensing tasks at ha…
Uzbrukumi NaCl lietotnēm
2015
Darbā tiek aplūkots kā pielāgot ROP pieeju uzbrukumu veikšanai x86_64 arhitektūras lietotnēm. Tiek piedāvāta uz rīku semantikas analīzi balstīta pieeja rīku meklēšanai, kas ļauj izmantot liela izmēra (10-60 baiti) rīkus, tādējādi atrisinot NaCl lēcienu adrešu ierobežojumu. Darba rezultātā ir izveidots rīks, kas spēj meklēt rīkus izpildāmajos failos un kompilēt kodu priekš atrastā rīku komplekta. Šis kods var saturēt aritmētiskās un atmiņas operācijas, funkciju izsaukumus, zarošanos un ciklus ar nosacījums.
A global palaeoclimatic reconstruction for the Valanginian based on clay mineralogical and geochemical data
2020
International audience; High-resolution clay mineral and δ18Ocarb analyses have been performed on three sections of Valanginian age (Early Cretaceous), from northwestern (~20–30°N) and southern (~53°S) Tethyan realms. The data have been integrated in a large set of published mineralogical (clays), and geochemical (δ18Ocarb, δ18Obivalve, δ18Olenticulina, δ18Obelemnite, and TEX86) data from 17 sections, situated between ~45°N and ~53°S. Based on this data set, we provide new insights into Valanginian climate conditions from a wide range of palaeolatitudes. We highlight climate trends within specific areas and identify main climate belts. In the Proto-North Atlantic realm (~15–17°N) large amou…