lecture14 - Segmentation (and Paged Segmentation)...

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Segmentation (and Paged Segmentation) Segmentation Programs generally divide up their memory usage by function. Some memory holds instructions, some static data, some dynamically-llocated data, some execution frames. All of these memory types have different protection, growth, and sharing requirements. In the monolithic memory allocation of classic VM systems, this model isn’twell supported. A stack heap Segmentation addresses this by providing multiple sharable, protectable, growable address spaces that processes can access. code bss data stack heap (dynamic memory) In a pure segmentation architecture, segments are allocated likevariable partitions, although the memory management hardware is involved in decoding addresses. Pure segmentation addresses replace the page identifier in the virtual address with a segment identifier ,and find the proper segment (not page) to which to apply the offset.
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This note was uploaded on 02/28/2008 for the course CS 402 taught by Professor Tedfaber during the Spring '05 term at USC.

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lecture14 - Segmentation (and Paged Segmentation)...

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