Commit Graph

23 Commits

Author SHA1 Message Date
e8de35b78e Make objdiff-core no_std + huge WASM rework 2025-02-09 22:28:02 -07:00
Steven Casper
674c942d7d Implement context menu copy functionality for data values (#163)
* Implement context menu copy functionality for data values

* Clippy fixes
2025-02-09 22:24:52 -07:00
LagoLunatic
a4fdb61f04 Implement diffing relocations within data sections (#154)
* Data view: Show data bytes with differing relocations as a diff

* Data view: Show differing relocations on hover

* Symbol list view: Adjust symbol/section match %s when relocations differ

* Improve data reloc diffing logic

* Don't make reloc diffs cause bytes to show as red or green

* Properly detect byte size of each relocation

* Data view: Add context menu for copying relocation target symbols

* Also show already-matching relocations on hover/right click

* Change font color for nonmatching relocs on hover
2025-01-18 16:20:07 -07:00
LagoLunatic
2876be37a3 Show relocation diffs in function view when the data's content differs (#153)
* Show reloc diff in func view when data content differs

* Add "Relax shifted data diffs" option

* Display fake pool relocations at end of line

* Diff reloc data by display string instead of raw bytes

This is to handle data symbols that contain multiple values in them at once, such as stringBase. If you compare the target symbol's bytes directly, then any part of the symbol having different bytes will cause *all* relocations to that symbol to show as a diff, even if the specific string being accessed is the same.

* Fix weak stripped symbols showing as a false diff

Fixed this by showing extern symbols correctly instead of skipping them.

* Add "Relax shifted data diffs" option to objdiff-cli

Includes both a command line argument and a keyboard shortcut (S).

* Remove addi string data hack and ... pool name hack

* Clippy fix

* PPC: Clear relocs from GPRs when overwritten

* PPC: Follow branches to improve pool detection accuracy

* PPC: Handle following bctr jump table control flow

* Clippy fixes

* PPC: Fix extern relocations not having their addend copied

* Add option to disable func data value diffing

* PPC: Handle lmw when clearing GPRs

* PPC: Handle moving reloc address with `add` inst

* Combine "relax reloc diffs" with other reloc diff options

* Add v3 config and migrate from v2

---------

Co-authored-by: Luke Street <luke@street.dev>
2025-01-18 16:18:05 -07:00
LagoLunatic
10b2a9c129 PPC: Display data values on hover for pools as well (#140)
* Fix missing dependency feature for objdiff-gui

* Update .gitignore

* PPC: Display data values on hover for pools as well

* Tooltip data display: Format floats and doubles better

Floats and doubles will now always be displayed with a decimal point and one digit after it, even if they are whole numbers. Floats will also have the f suffix. This is so you can tell the data type just by glancing at the value.

* Move big functions to bottom ppc.rs

* Clear pool relocs in volatile registers on function call

This fixes some false positives.

* Revert ObjArch API changes, add fake target symbol hack

Because we no longer have access to the actual symbol name via sections, guess_data_type can no longer detect the String data type for pooled references.

* Add hack to detect strings via the addi opcode

* Move hack to resolve placeholder symbol into process_code_symbol

* Merge reloc and fake_pool_reloc fields of ObjIns
2024-12-03 22:50:05 -07:00
424434edd6 Experimental ARM64 support
Based on yaxpeax-arm, but with a heavy dose of
custom code to work around its limitations.

Please report any issues or unhandled relocations.
2024-10-31 17:39:12 -06:00
c5896689cf Use ppc750cl Opcode::from 2024-09-27 00:12:21 -06:00
Steven Casper
a43320af1f PPC: Guess reloc data type based on the instruction. (#108)
* Guess reloc data type based on the instruction.

Adds an entry to the reloc tooltip to show the inferred data type
and value.

* Fix clippy warning

* Match on Opcode rather than mnemonic string
2024-09-25 23:45:37 -06:00
Amber Brault
35bbd40f5d Actually update extab stuff (#110)
* Update cwextab

* Update

* Update ppc.rs

* Make fmt shut up
2024-09-24 09:16:14 -06:00
dcf209aac5 Cleanup & move extab code into ppc arch 2024-09-09 19:43:10 -06:00
0fccae1049 Add experimental wasm bindings
Published to npm as objdiff-wasm
2024-08-20 21:40:32 -06:00
Steven Casper
09cc9952df Support R_MIPS_GPREL16 relocations correctly (#88)
* Support R_MIPS_GPREL16 relocations correctly

symbols defined in the same file require adding a
special ri_gp_value from the .reginfo section to
their relocation calculations.

* Run nightly rustfmt

* Prevent potential panic when slicing .reginfo
2024-08-08 20:20:41 -06:00
fc54e93681 API updates for ARM backend 2024-06-03 19:37:48 -06:00
3f82c1a50f objdiff-core API adjustments
- Allows using process_code without
  constructing an ObjInfo
- Allows creating an arch without
  having to provide an object

Used in decomp-toolkit
2024-06-03 18:52:32 -06:00
Aetias
f5b5a612fc Display correct line numbers for multiple .text sections (#63)
* Support multiple DWARF sequences

* Rework DWARF line info parsing

- Properly handles multiple sections
  in DWARF 1
- line_info moved into ObjSection
- DWARF 2 parser no longer errors with
  no .text section
- Both parsers properly skip empty
  sections

* Simplify line_info (no Option)

---------

Co-authored-by: Luke Street <luke.street@encounterpc.com>
2024-05-21 09:55:39 -06:00
22a24f37f5 Diff data symbols & improve symbol match logic 2024-05-20 23:53:37 -06:00
5bfaaaaf65 Instruction hover / context menu improvements 2024-05-20 17:38:20 -06:00
3e5008524e cargo fmt & cargo deny fix 2024-04-30 20:45:45 -06:00
2c46286aff Update all dependencies & use ppc750cl InsIter 2024-04-30 20:06:04 -06:00
30d14870ef Update ppc750cl, add Itanium demangler & cleanup 2024-03-21 21:36:50 -06:00
3c74b89f15 Restructure diffing code & initial 3-way diffing (WIP) 2024-03-18 18:10:18 -06:00
1343f4fd2b cargo fmt 2024-03-17 12:20:25 -06:00
9df98f263e Move all architecture-specific code into modules
No more scattered relocation handling and
feature checks. Everything will go through
the ObjArch trait, which makes it easier
to add new architectures going forward.
2024-03-17 12:16:47 -06:00