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Diffstat (limited to 'results/classifier/mode-deepseek-r1:32b/reasoning/user/1536')
| -rw-r--r-- | results/classifier/mode-deepseek-r1:32b/reasoning/user/1536 | 23 |
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diff --git a/results/classifier/mode-deepseek-r1:32b/reasoning/user/1536 b/results/classifier/mode-deepseek-r1:32b/reasoning/user/1536 new file mode 100644 index 000000000..8eb43230e --- /dev/null +++ b/results/classifier/mode-deepseek-r1:32b/reasoning/user/1536 @@ -0,0 +1,23 @@ +<think> +Okay, I'm trying to figure out whether this bug report is related to user-mode or system-mode in QEMU. Let's break down the information given. + +The problem involves test programs using certain VSX instructions (vextractbm, etc.) failing when run on qemu-ppc64 but not on qemu-ppc64le. The steps provided involve compiling code with a cross-compiler and running it under QEMU with specific commands. + +First, I need to understand what these instructions are. VSX stands for Vector Scalar eXtensions, which is part of the POWER architecture. These instructions operate on vector registers, and their correct handling is crucial for certain applications. + +The test programs fail when executed under qemu-ppc64, which emulates the big-endian 64-bit PowerPC architecture. The fact that it doesn't fail on the little-endian version (qemu-ppc64le) suggests there might be an endianness issue or something specific to how the emulator handles these instructions in a particular mode. + +Looking at the steps, the user compiles using powerpc64-linux-gnu-gcc with -mcpu=power10. Then they run it under QEMU using the command that specifies the CPU as power10 and sets up the LD prefix. This seems like a typical setup for testing user-space applications in an emulated environment. + +So, what's the context here? The issue arises when running a program (either the test or Google Highway) under QEMU. It doesn't involve kernel-level operations but rather application-level code using specific vector instructions. Since the problem is about how the CPU instructions are being handled during the execution of user-space programs, it likely relates to the emulator's ability to correctly simulate these instructions in user mode. + +In QEMU, user-mode emulation focuses on running individual applications without a full OS, while system-mode emulates an entire machine including hardware devices and kernel. Here, since they're using QEMU with LD prefix and executing a compiled program directly, it seems like they're in user-mode because there's no mention of booting an OS or dealing with device emulation beyond the CPU. + +The bug is that certain instructions are not working as expected under big-endian but work under little-endian. This points to issues in how QEMU handles these specific vector operations in its PowerPC64 implementation, specifically in user-mode since they're executing a compiled binary without a full OS context. + +Therefore, this bug report falls under 'user' mode because it's about the emulator correctly handling application-level instructions and not involving system-level components like devices or kernel interaction. +</think> + +The issue is related to how QEMU handles specific vector instructions when running user-space applications. Since the problem occurs in an emulated environment without involving system-level components, it's a user-mode issue. + +user \ No newline at end of file |