blob: eaca7cafe4f90323d71d355a6ea0343333a4194e (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
<think>
Alright, let's try to figure out what category this bug falls into. The user provided some logs and code snippets from QEMU related to SPARC32plus on 64-bit hosts. They mentioned issues with load and store functions causing access violations.
First, looking at the problem description: it seems that when compiling for a 64-bit host, the generated x86 code has incorrect handling of 32-bit operations. Specifically, in both examples provided, there's an instruction "mov %ebx,%ebx" which is redundant and doesn't seem to do anything useful. This might be causing issues because in 64-bit mode, operations that should handle 32-bit data aren't being managed correctly.
The user tried disabling gen_address_mask(), but it made things worse. So the issue isn't just a missing mask; perhaps there's something else wrong with how addresses are calculated or how 32-bit values are extended in 64-bit registers.
Looking at the categories:
- **Instruction**: This would involve an incorrect instruction being generated.
- **Syscall**: Errors related to system calls.
- **Runtime**: Other runtime errors that aren't necessarily due to instructions or syscalls.
The problem here doesn't seem to be a specific instruction error, but rather how data is being handled during execution. The redundant "mov" and the way 32-bit values are extended in 64-bit registers might lead to incorrect memory accesses, which would cause runtime errors like access violations.
So it's more about what happens during the execution of the generated code rather than a specific instruction or syscall issue.
</think>
runtime
|