Michael Petch

Michael Petch has asked 11 questions and find answers to 261 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

How C structures get passed to function in assembly?
set the alignment of the data segment in TASM ideal mode
inline asm: operand type mismatch for 'out'
How to tell the GNU assembler to warn when using undefined labels?
Why does calling the C abort() function from an x86_64 assembly function lead to segmentation fault (SIGSEGV) instead of an abort signal?
Error reading disk when disk is not a hard drive. Int 0x13 ah 0x02
Who enables the A20 line when booting in pure UEFI?
How to add values?
int 13h 42h doesn't load anything in Bochs
VirtualBox - No bootable medium found