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Diffstat (limited to 'results/classifier/mode-deepseek-r1:32b/reasoning/user/1860056')
| -rw-r--r-- | results/classifier/mode-deepseek-r1:32b/reasoning/user/1860056 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/results/classifier/mode-deepseek-r1:32b/reasoning/user/1860056 b/results/classifier/mode-deepseek-r1:32b/reasoning/user/1860056 new file mode 100644 index 00000000..d88bbc78 --- /dev/null +++ b/results/classifier/mode-deepseek-r1:32b/reasoning/user/1860056 @@ -0,0 +1,17 @@ +<think> +Okay, so I'm trying to figure out whether this bug report about the MIPS binaries segfaulting in QEMU is a user-mode issue or a system-mode issue. Let me break it down step by step. + +First, the problem occurs when compiling and running a simple "Hello World" program using mips-linux-gnu-g++ on a Debian host. The program uses std::cout, which suggests it's linking against the C++ standard library. When they run it with QEMU for MIPS big endian 32-bit, it segfaults, but other configurations like 64-bit and little endian work fine. + +So, why would this happen? Let me think about how programs are executed in user-mode versus system-mode in QEMU. User-mode emulation runs the guest code directly under the host's OS without a full VM, whereas system-mode involves running a full VM with its own kernel and device emulation. + +In this case, the program is being run as an executable on the host, but using QEMU for MIPS to emulate it. That suggests user-mode because there's no mention of booting an entire OS or using KVM or similar. The issue is likely within how the C++ runtime (like libstdc++) is being handled in user-mode for big endian MIPS. + +Another angle: the error occurs when accessing cout, which involves dynamic linking and possibly exception handling. If QEMU's user-mode doesn't correctly handle certain calling conventions or endianness for system calls or library functions, that could cause a segfault. + +Since the problem is specific to the big endian 32-bit MIPS setup, it might be an issue with how the CPU state or memory accesses are handled in user-mode. Maybe there's a bug in the QEMU user emulator's handling of certain instructions or data alignment for this configuration. + +I don't see any mention of device drivers, kernel issues, or higher privileges, which would point towards system-mode problems. Instead, it seems like an issue with running a userspace program under emulation, specifically how libraries and function calls are being managed by QEMU's user-mode environment. +</think> + +user \ No newline at end of file |