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author | Samuel Huang <huangs@chromium.org> | 2021-08-05 16:46:38 +0000 |
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committer | Copybara-Service <copybara-worker@google.com> | 2021-08-05 10:05:02 -0700 |
commit | fa10b05c4854c6d8a603ee47c2a213cbc23f8646 (patch) | |
tree | 94ad9d794dedc26bd0e0be4b18511d45026a0b98 /arm_utils.h | |
parent | 3e1f64d1395c53a730475d930b663d5f6006099e (diff) | |
download | zucchini-fa10b05c4854c6d8a603ee47c2a213cbc23f8646.tar.gz |
[Zucchini] Add ARM support for ELF files.
This CL enables ARM-ELF (AArch32 and AArch64) support in Zucchini.
* Define ARM {AArch32, AArch64}ReferenceType.
* Add Rel32Finder{Arm, AArch32, AArch64} (with tests) to use
previously-added ARM disassembly code to extract rel32 references.
* Add DisassemblerElf{Arm, AArch32, AArch64} to parse ARM ELF files and
create reference readers / writers, and reference groups.
* For AArch32: Add heuristic detection of ARM vs. Thumb2 mode.
* Add IsTargetOffsetInElfSectionList() (with tests) to help ARM reject
false positive references.
* Add ReferenceBytesMixerElfArm to remove redundant reference target
information from bytewise correction data.
Bug: 918867
Change-Id: I1e6d3d8b8d174c85a3d44ca6d642b7ff0bd6a6a6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2922822
Commit-Queue: Samuel Huang <huangs@chromium.org>
Reviewed-by: Etienne Pierre-Doray <etiennep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#908913}
NOKEYCHECK=True
GitOrigin-RevId: 85cc8a596f183487b395a59e80b2f654f241ab2c
Diffstat (limited to 'arm_utils.h')
-rw-r--r-- | arm_utils.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arm_utils.h b/arm_utils.h index 63c7538..8664f3e 100644 --- a/arm_utils.h +++ b/arm_utils.h @@ -213,6 +213,8 @@ class AArch32Rel32Translator { // |instr_rva| as aid. static ArmAlign DecodeA24(uint32_t code32, arm_disp_t* disp); static bool EncodeA24(arm_disp_t disp, uint32_t* code32); + // TODO(huangs): Refactor the Read*() functions: These are identical + // except for Decode*() and Get*TargetRvaFromDisp(). static bool ReadA24(rva_t instr_rva, uint32_t code32, rva_t* target_rva); static bool WriteA24(rva_t instr_rva, rva_t target_rva, uint32_t* code32); @@ -362,6 +364,8 @@ class AArch64Rel32Translator { // to the counterparts in AArch32Rel32Translator. static ArmAlign DecodeImmd14(uint32_t code32, arm_disp_t* disp); static bool EncodeImmd14(arm_disp_t disp, uint32_t* code32); + // TODO(huangs): Refactor the Read*() functions: These are identical + // except for Decode*(). static bool ReadImmd14(rva_t instr_rva, uint32_t code32, rva_t* target_rva); static bool WriteImmd14(rva_t instr_rva, rva_t target_rva, uint32_t* code32); |