http://llvm.org/bugs/show_bug.cgi?id=9175
Summary: ARM assertion failed when disassembling LDM & STM
Product: libraries
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: ARM
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Message:
================
$ echo '0x10 0x00 0x93 0xe8'|Debug+Asserts/bin/llvm-mc -arch=arm --disassemble
-debug
Args: Debug+Asserts/bin/llvm-mc -arch=arm --disassemble -debug
Opcode=130 Name=LDMIA Format=ARM_FORMAT_LDSTMULFRM(10)
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6
5 4 3 2 1 0
-------------------------------------------------------------------------------------------------
| 1: 1: 1: 0| 1: 0: 0: 0| 1: 0: 0: 1| 0: 0: 1: 1| 0: 0: 0: 0| 0: 0: 0: 0| 0: 0:
0: 1| 0: 0: 0: 0|
-------------------------------------------------------------------------------------------------
llvm-mc:
/home/jyyou/src/llvm-trunk/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp:1241:
bool DisassembleLdStMulFrm(llvm::MCInst&, unsigned int, uint32_t, short
unsigned int, unsigned int&, llvm::ARMBasicMCBuilder*): Assertion `NumOps >= 5
&& "LdStMulFrm expects NumOps >= 5"' failed.
================
It works fine while changing NumOps >= 5 into NumOps >= 4.
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