Michael Petch

Michael Petch has asked 11 questions and find answers to 252 problems.

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About

Software engineer and software architect. I can be reached at [email protected].

Michael Petch questions

What do the constraints "Rah" and "Ral" mean in extended inline assembly?
Solution needed for building a static IDT and GDT at assemble/compile/link time
Understanding Inline assembly in a pre-processor macro vs Inline assembly in a function
GCC code that seems to break inline assembly rules but an expert believes otherwise
Problem switching to v8086 mode from 32-bit protected mode by setting EFLAGS.VM to 1
Near call/jump tables don't always work in a bootloader
Should using MOV instruction to set SS to 0x0000 cause fault #GP(0) in 64-bit mode?
Legacy BIOS bootloader to bootstrap real-mode code in second stage

Michael Petch answers

VirtualBox - No bootable medium found
Successive sys_write syscalls not working as expected, NASM bug on OS X?
Writing a C function from given x86 assembly
What is i.h.ah, o.h.ah and int86?
TASM 1.4 - Displaying a particular colored string?
Avoiding the JMP in the JMP CALL POP technique for shellcode NASM?
Stack cleanup not working (__stdcall MASM function)
OS/X 64-bit assembly code generates bus error
Unexpected output when printing directly to text video memory
Assembly Instructions: AAA