3 Sep
2022
3 Sep
'22
5:53 p.m.
On 9/3/22 12:48, Etaash Mathamsetty (@etaash.mathamsetty) wrote:
On Sat Sep 3 17:43:11 2022 +0000, **** wrote:
Zebediah Figura replied on the mailing list:
On 9/3/22 12:22, Etaash Mathamsetty (@etaash.mathamsetty) wrote: > This instruction only needs to compare 1 byte, since it's imm8 is just an 8 bit number (unless I am wrong) The 0x83 family is an arithmetic operation between a sign-extended immediate byte and a 2/4/8-byte register or memory location. The equivalent 1-byte comparison is 0x80 or 0x82 (they are duplicates).the comparison is between a signed byte and a 2/4/8 byte register/memory location, how am I supposed to compare more than 1 byte?
As stated, the immediate byte should be sign-extended to the appropriate length.