sandpile.org -- The world's leading source for technical x86 processor information.

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sandpile.org
The world's leading source for technical x86 processor information.

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regs

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general purpose registers
rFLAGS | masks | bounds
CET | FRED
segment registers
table registers
control registers
debug registers
legacy FP | vector FP
model specific registers

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code

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opcode encodings
1 byte opcodes
2 byte opcodes
3 byte opcodes
map 4 opcodes
opcode groups | FPU opcodes
3DNow! | SSE5A | XOP | L1OM
mod R/M byte and SIB byte
16-bit mod R/M byte

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data

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binary | ternary
datatypes
stack frames
selectors
descriptors
descriptor tables
task state segments
paging structures
system management mode

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misc

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condition codes
exceptions | interrupts
legacy stuff | APIC
Intel VMX | AMD SVM
coherency
execution mode
initial state
canonical addresses
CPUID

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