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Understanding Process Memory Allocation in PE File Format

This guide introduces the process memory allocation in PE files, including header, text, data, bss sections, and the execution of PE files with kernel and user space. It covers address transition, logical and physical addressing, program segmentation, and paging functionalities. Q&A sections address common queries. Appendix details MMU, kernel operations.

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Understanding Process Memory Allocation in PE File Format

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  1. Process_Memory_Allocation Yuan Lin 20130128

  2. Step 1: Generate PE File (After Compile & Link ) Header Section Table Section .text Section .data Section .bss …… PE File Format

  3. Step 2: Execute PE File 1GB Kernel Space Parameter & Environ Stack …… Linear Space Totally 4GB 3GB Heap Segment bss Segment data Segment text Process memory allocation Q&A: what kind address in application? (Linear address)

  4. Step 2: Execute PE File 0GB 3GB 4GB Linear Space Totally 4GB Process User Space Kernel Space 0GB 1GB 4GB Kernel Q&A: How two spaces communicate? (systemcall, ioctl, sysfs, proc, etc…)

  5. Step 3: Address Transition Logical Address Program Segmentation Kernel (MMU) Linear Address Paging Hardware Physical Address

  6. Step 3: Address Transition Q&A: Segmentation functionalities? (share, multiple virtual spaces) Q&A: If total of multiple virtual spaces larger than 4GB, how to allocate linear space? Q&A: How to explain logical address equals to linear address when have no segmentation? Q&A: Paging functionalities? (Prevent fragmentized, increase utilization efficiency)

  7. Appendix: MMU: buddy system, slab, high memory Kernel: interruption, system call, virtual file system

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