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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| en:multiasm:papc:chapter_6_7 [2025/10/23 15:16] – [BMI1 and BMI2 Instructions] ktokarz | en:multiasm:papc:chapter_6_7 [2026/01/22 12:11] (current) – [Sign extension] ktokarz | ||
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| * **cwde** - converts word in ax to doubleword extended in eax | * **cwde** - converts word in ax to doubleword extended in eax | ||
| * **cdq** - converts doubleword in eax to quadword in edx:eax | * **cdq** - converts doubleword in eax to quadword in edx:eax | ||
| + | * **cdqe** - convert doubleword in eax to quadword in rax | ||
| + | * **cqo** - convert quadword in rax to double quadword in rdx:rax | ||
| - | Sign extension instructions work solely with the accumulator. Fortunately, | + | Sign extension instructions work solely with the accumulator. Fortunately, |
| * **movsx** - copies and sign-extends a byte to a word or doubleword or word to doubleword. | * **movsx** - copies and sign-extends a byte to a word or doubleword or word to doubleword. | ||
| * **movzx** - copies and zero-extends a byte to a word or doubleword or word to doubleword. | * **movzx** - copies and zero-extends a byte to a word or doubleword or word to doubleword. | ||
| Line 575: | Line 577: | ||
| <figure pdep_instr> | <figure pdep_instr> | ||
| - | {{ : | + | {{ : |
| < | < | ||
| </ | </ | ||
| Line 582: | Line 584: | ||
| <figure pext_instr> | <figure pext_instr> | ||
| - | {{ : | + | {{ : |
| < | < | ||
| </ | </ | ||
