From c6ff809ae9acbc90455dc8b58b2dae84a13366cf Mon Sep 17 00:00:00 2001 From: Fangrui Song Date: Mon, 16 Dec 2024 21:05:08 -0800 Subject: [llvm-mc] Add --hex to disassemble hex bytes `--disassemble`/`--cdis` parses input bytes as decimal, 0bbin, 0ooct, or 0xhex. While the hexadecimal digit form is most commonly used, requiring a 0x prefix for each byte (`0x48 0x29 0xc3`) is cumbersome. Tools like xxd -p and rz-asm use a plain hex dump form without the 0x prefix or space separator. This patch adds --hex to disassemble such hex bytes with optional whitespace. ``` % rz-asm -a x86 -b 64 -d 4829c34829c4 sub rbx, rax sub rsp, rax % llvm-mc -triple=x86_64 --cdis --hex --output-asm-variant=1 <<< 4829c34829c4 .text sub rbx, rax sub rsp, rax ``` Pull Request: https://github.com/llvm/llvm-project/pull/119992 --- llvm/docs/CommandGuide/llvm-mc.rst | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'llvm/docs/CommandGuide') diff --git a/llvm/docs/CommandGuide/llvm-mc.rst b/llvm/docs/CommandGuide/llvm-mc.rst index c5d2f93..8d6346f 100644 --- a/llvm/docs/CommandGuide/llvm-mc.rst +++ b/llvm/docs/CommandGuide/llvm-mc.rst @@ -92,6 +92,10 @@ End-user Options Generate DWARF debugging info for assembly source files. +.. option:: --hex + + Take raw hexadecimal bytes as input for disassembly. Whitespace is ignored. + .. option:: --large-code-model Create CFI directives that assume the code might be more than 2 GB. -- cgit v1.1