problem about protected-mode-Collection of common programming errors

11 years ago
admin
3 minutes

  • nrz
    assembly x86 intel qemu protected-mode
    I’m trying to create very simple operating system in 64 bits. I’m trying to enter protected mode first, but I’m failing at this point. When I do the far jump into 32 bits, the machine restarts. My code is loaded into memory with another assembly program at the address 0x100. The code is compiled with nasm and I’m running the program using qemu -fda. Here is the code I got so far: [BITS 16]jmp _start_start:clilgdt [GDT64]; Switch to protected modemov eax, cr0or al, 1bmov cr0, eax; Desactivate pag

  • BlueRaja – Danny Pflughoeft
    c# internet-explorer bho protected-mode
    I am writing an IE Extension (BHO) in C#. When run in protected mode (IE’s new UAC-compliant mode which forces all extensions to run at low-integrity), it fails because it cannot access user.config in the appdata folder. Is there some way to mark files are readable by lower-integrity processes? Failing that, is there some way to force the BHO to run at medium-level integrity? Failing that, is there some way to create a low-integrity symlink in the low-integrity folders which points to a medi

  • JoeSlav
    java windows-7 internet-explorer-8 applet protected-mode
    I developed a Java applet that launches an executable file.When I launch an executable file using the applet – with “protected mode activated” – my sistem crashes.If I were to put my website in the trusted sites’ list, it would work. However, I can’t do that because some of the links of my site don’t work in this mode.Does someone know how can I prevent this behavior? In other words, is it possible to run an executable in protected mode without putting the website in the trusted sites’ list?Tha

  • skaffman
    windows interrupt-handling protected-mode
    Hi to all Could we use the Int 13h (direct disk read/write) in Windows operating systems or does the windows protected mode not allow us, and if so is there a work round? Thanks in advance.

  • jacks
    operating-systems virtual-memory memory-management paging protected-mode
    Well, this may seem a common or already asked question but after searching various books, online tutorials and even here on SU, I am still puzzled at how these four beasts work together on a x86 protected mode system.What is the correct terminology that can be used when discussing about these things?As far as I understand, all these 4 concepts are completely different, but got related when we talk about protecting memory. This is where it got messed up for me!I’ ll begin with swapping first.Swap

  • mnc
    linux linux-kernel cpu grub protected-mode
    I would like to ask if it is GRUB that switch the CPU to protected mode during boot up or is it the Linux kernel that does it. And also I would like to ask – is the kernel itself (vmlinuz) an ELF or is it plain binary format? Thanks.

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