mirror of
https://github.com/encounter/objdiff.git
synced 2025-06-07 07:03:39 +00:00
Luke Street
8e8ab6bef8
COFF objects in particular don't contain the size of symbols. We infer the size of these symbols by extending them to the next symbol. If a tool emits symbols for branch targets, this causes the inferred size to be too small. This checks if a symbol starts with a certain prefix (right now, just .L or LAB_), and skips over it during symbol size inference. Resolves #174
80 lines
3.1 KiB
Rust
80 lines
3.1 KiB
Rust
use objdiff_core::{diff, diff::display::SymbolFilter, obj};
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mod common;
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#[test]
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#[cfg(feature = "x86")]
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fn read_x86() {
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let diff_config = diff::DiffObjConfig::default();
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let obj = obj::read::parse(include_object!("data/x86/staticdebug.obj"), &diff_config).unwrap();
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insta::assert_debug_snapshot!(obj);
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let symbol_idx = obj.symbols.iter().position(|s| s.name == "?PrintThing@@YAXXZ").unwrap();
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let diff = diff::code::no_diff_code(&obj, symbol_idx, &diff_config).unwrap();
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insta::assert_debug_snapshot!(diff.instruction_rows);
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let output = common::display_diff(&obj, &diff, symbol_idx, &diff_config);
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insta::assert_snapshot!(output);
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}
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#[test]
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#[cfg(feature = "x86")]
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fn read_x86_combine_sections() {
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let diff_config = diff::DiffObjConfig {
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combine_data_sections: true,
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combine_text_sections: true,
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..Default::default()
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};
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let obj = obj::read::parse(include_object!("data/x86/rtest.obj"), &diff_config).unwrap();
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insta::assert_debug_snapshot!(obj.sections);
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}
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#[test]
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#[cfg(feature = "x86")]
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fn read_x86_64() {
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let diff_config = diff::DiffObjConfig::default();
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let obj = obj::read::parse(include_object!("data/x86_64/vs2022.o"), &diff_config).unwrap();
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insta::assert_debug_snapshot!(obj);
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let symbol_idx =
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obj.symbols.iter().position(|s| s.name == "?Dot@Vector@@QEAAMPEAU1@@Z").unwrap();
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let diff = diff::code::no_diff_code(&obj, symbol_idx, &diff_config).unwrap();
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insta::assert_debug_snapshot!(diff.instruction_rows);
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let output = common::display_diff(&obj, &diff, symbol_idx, &diff_config);
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insta::assert_snapshot!(output);
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}
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#[test]
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#[cfg(feature = "x86")]
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fn display_section_ordering() {
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let diff_config = diff::DiffObjConfig::default();
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let obj = obj::read::parse(include_object!("data/x86/basenode.obj"), &diff_config).unwrap();
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let obj_diff =
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diff::diff_objs(Some(&obj), None, None, &diff_config, &diff::MappingConfig::default())
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.unwrap()
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.left
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.unwrap();
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let section_display =
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diff::display::display_sections(&obj, &obj_diff, SymbolFilter::None, false, false, false);
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insta::assert_debug_snapshot!(section_display);
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}
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#[test]
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#[cfg(feature = "x86")]
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fn read_x86_jumptable() {
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let diff_config = diff::DiffObjConfig::default();
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let obj = obj::read::parse(include_object!("data/x86/jumptable.o"), &diff_config).unwrap();
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insta::assert_debug_snapshot!(obj);
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let symbol_idx = obj.symbols.iter().position(|s| s.name == "?test@@YAHH@Z").unwrap();
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let diff = diff::code::no_diff_code(&obj, symbol_idx, &diff_config).unwrap();
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insta::assert_debug_snapshot!(diff.instruction_rows);
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let output = common::display_diff(&obj, &diff, symbol_idx, &diff_config);
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insta::assert_snapshot!(output);
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}
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// Inferred size of functions should ignore symbols with specific prefixes
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#[test]
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#[cfg(feature = "x86")]
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fn read_x86_local_labels() {
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let diff_config = diff::DiffObjConfig::default();
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let obj = obj::read::parse(include_object!("data/x86/local_labels.obj"), &diff_config).unwrap();
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insta::assert_debug_snapshot!(obj);
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}
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