Hello LLVM-Mailing-List,
I discovered a strange behavior when dealing with object files generated
by the compiler of Visual Studio 2015.
When jitting bc files I also add object files to look up functions. These
object files are coming from visual studio. When using a switch case
instruction that compiler often generates code based of __ImageBase. I
show you a short snippet of the assembly output.
mov eax, DWORD PTR ?myInt@@3HA ; myInt
lea rdi, OFFSET FLAT:__ImageBase
xor ebx, ebx
Then these offset is used to jump to some labels like "$LL4 at
execute:".
When the object file gets added to the jitting process this offset
generation seems to be broken. Executing the code coming from the object
file will lead to a crash. The crash address will always be exactly the
address I used to overload __ImageBase with. So it seems that the address
relocation is wrong with generating offsets?
Kind regards
Björn
Als GmbH eingetragen im Handelsregister Bad Homburg v.d.H. HRB 9816,
USt.ID-Nr. DE 114 165 789
Geschäftsführer: Dr. Hiroshi Nakamura, Dr. Robert Plank, Markus Bode,
Heiko Lampert, Hiroshi Kawamura, Takashi Nagano, Takeshi Fukushima.
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