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Renate · 08-13-2024, 10:04 AM

Since we're going down memory lane...

I jumped on Windows NT as soon as it became available and avoided all that Windows 95 nonsense. What a dead end.

In the last decade I have written numerical routines in assembler. Some things like 24 bit fixed point are not easily implemented in higher languages.

C to assembly is not that inefficient with a decent compiler. OTOH, just look through any C++ program and look at all the extra instructions.

I was looking for an ioctl and couldn't believe that there was no 0xc138fd09.
I knew that high and low were split, but I wasn't expecting this!

Code:

  129788:	529fa0c8 	mov	w8, #0xfd06
  12978c:	72b82708 	movk	w8, #0xc138, lsl #16
  129790:	11000d01 	add	w1, w8, #0x3

Assembly is still very important for reverse engineering.

08-13-2024, 10:04 AM	#38
Renate Onyx-maniac Posts: 3,999 Karma: 18026955 Join Date: Feb 2012 Device: Nook NST, Glow2, 3, 4, '21, Kobo Aura2, Poke3, Poke5, Go6	Since we're going down memory lane... I jumped on Windows NT as soon as it became available and avoided all that Windows 95 nonsense. What a dead end. In the last decade I have written numerical routines in assembler. Some things like 24 bit fixed point are not easily implemented in higher languages. C to assembly is not that inefficient with a decent compiler. OTOH, just look through any C++ program and look at all the extra instructions. I was looking for an ioctl and couldn't believe that there was no 0xc138fd09. I knew that high and low were split, but I wasn't expecting this! Code: 129788: 529fa0c8 mov w8, #0xfd06 12978c: 72b82708 movk w8, #0xc138, lsl #16 129790: 11000d01 add w1, w8, #0x3 Assembly is still very important for reverse engineering.