Comments (3)
thanks. good catch! capstone only got support for compressed instructions after the initial/bulk work of this project so compressed instructions are still not well tested. I pushed a commit that should fix this.
btw. this binary is a good testcase also for the lifter, so if you encounter anything feel free to report it. I also pushed a bunch of new lifting handlers for the rv64 specifics.
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I think it's because of the compressed instructions, the one with "c." suffix
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https://riscv.org/wp-content/uploads/2019/06/riscv-spec.pdf, I've made a small change to get around this
diff --git a/riscv.py b/riscv.py
index db4c753..90514f9 100644
--- a/riscv.py
+++ b/riscv.py
@@ -20,7 +20,7 @@ from .lifter import Lifter
branch_ins = set([
'beq', 'bne', 'beqz', 'bnez', 'bge', 'bgeu', 'blt', 'bltu', 'blez', 'bgez',
- 'bltz', 'bgtz'
+ 'bltz', 'bgtz', 'c.bnez', 'c.beqz'
])
direct_call_ins = set(['jal', 'j'])
and it correctly marks the instruction as a branch.
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