Comments on: Hot patching inlined functions with x86_64 asm metaprogramming http://timetobleed.com/hot-patching-inlined-functions-with-x86_64-asm-metaprogramming/ technical ramblings from a wanna-be unix dinosaur Wed, 21 Jul 2010 07:31:26 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Cjacktx http://timetobleed.com/hot-patching-inlined-functions-with-x86_64-asm-metaprogramming/comment-page-1/#comment-748 Cjacktx Wed, 16 Jun 2010 16:23:28 +0000 http://timetobleed.com/?p=1331#comment-748 thanks man! thanks man!

]]> By: Matthieu http://timetobleed.com/hot-patching-inlined-functions-with-x86_64-asm-metaprogramming/comment-page-1/#comment-516 Matthieu Fri, 22 Jan 2010 19:42:35 +0000 http://timetobleed.com/?p=1331#comment-516 Hi !<br>Thank you for this article, it helps me for my work !<br>I'm not really sure, but i think that you need to substract 128 to %rsp before doing any push, according to the "red zone" described in the ABI, page 16.<br>As some functions may use references liks -8(%rsp), doing a push will erase that value.<br>Best regards Hi !
Thank you for this article, it helps me for my work !
I'm not really sure, but i think that you need to substract 128 to %rsp before doing any push, according to the “red zone” described in the ABI, page 16.
As some functions may use references liks -8(%rsp), doing a push will erase that value.
Best regards

]]> By: Matthieu http://timetobleed.com/hot-patching-inlined-functions-with-x86_64-asm-metaprogramming/comment-page-1/#comment-508 Matthieu Fri, 22 Jan 2010 11:42:35 +0000 http://timetobleed.com/?p=1331#comment-508 Hi !<br>Thank you for this article, it helps me for my work !<br>I'm not really sure, but i think that you need to substract 128 to %rsp before doing any push, according to the "red zone" described in the ABI, page 16.<br>As some functions may use references liks -8(%rsp), doing a push will erase that value.<br>Best regards Hi !
Thank you for this article, it helps me for my work !
I'm not really sure, but i think that you need to substract 128 to %rsp before doing any push, according to the “red zone” described in the ABI, page 16.
As some functions may use references liks -8(%rsp), doing a push will erase that value.
Best regards

]]> By: Andy Hefner http://timetobleed.com/hot-patching-inlined-functions-with-x86_64-asm-metaprogramming/comment-page-1/#comment-474 Andy Hefner Fri, 11 Dec 2009 14:06:12 +0000 http://timetobleed.com/?p=1331#comment-474 I've long kept a shell script that launches an editor on a new temporary file, assembles it to a bin file with nasm, then disassembles the bin file to a listing and prints it on the screen, for exactly this sort of thing. Very handy for finding out opcodes for instructions, figuring out if an instruction supports a particular addressing mode without looking it up, writing bits of shellcode or templates for trampolines, compiler intrinsics, whatever. I'm sure you could rig the same thing up with gas, but I prefer Intel syntax, plus nasm just makes it absolutely effortless. Playing with machine code is great fun. I've long kept a shell script that launches an editor on a new temporary file, assembles it to a bin file with nasm, then disassembles the bin file to a listing and prints it on the screen, for exactly this sort of thing. Very handy for finding out opcodes for instructions, figuring out if an instruction supports a particular addressing mode without looking it up, writing bits of shellcode or templates for trampolines, compiler intrinsics, whatever. I'm sure you could rig the same thing up with gas, but I prefer Intel syntax, plus nasm just makes it absolutely effortless. Playing with machine code is great fun.

]]> By: vidarh http://timetobleed.com/hot-patching-inlined-functions-with-x86_64-asm-metaprogramming/comment-page-1/#comment-470 vidarh Thu, 10 Dec 2009 12:57:36 +0000 http://timetobleed.com/?p=1331#comment-470 You know you're going to hell for this, right? :) <br><br>More seriously, I really like your use of structs to define the trampolines. You know you're going to hell for this, right? :)

More seriously, I really like your use of structs to define the trampolines.

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