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| author | Fangrui Song <i@maskray.me> | 2024-12-16 21:05:08 -0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-12-16 21:05:08 -0800 |
| commit | c6ff809ae9acbc90455dc8b58b2dae84a13366cf (patch) | |
| tree | 61f7a2c7b5ce534298ad01e296a75711566d47af /llvm/docs | |
| parent | e2a94a97bdf26198ab254d61ee4be23a140dab2d (diff) | |
| download | llvm-c6ff809ae9acbc90455dc8b58b2dae84a13366cf.zip llvm-c6ff809ae9acbc90455dc8b58b2dae84a13366cf.tar.gz llvm-c6ff809ae9acbc90455dc8b58b2dae84a13366cf.tar.bz2 | |
[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
Diffstat (limited to 'llvm/docs')
| -rw-r--r-- | llvm/docs/CommandGuide/llvm-mc.rst | 4 |
1 files changed, 4 insertions, 0 deletions
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. |