1 files changed, 23 insertions, 0 deletions
diff --git a/results/classifier/zero-shot-user-mode/output/instruction/2319 b/results/classifier/zero-shot-user-mode/output/instruction/2319
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index 000000000..5dde2435f
--- /dev/null
+++ b/results/classifier/zero-shot-user-mode/output/instruction/2319
@@ -0,0 +1,23 @@
+instruction: 0.509
+runtime: 0.259
+syscall: 0.232
+
+
+
+SPARC32-bit SDIV of negative divisor gives wrong result
+Description of problem:
+SDIV of negative divisor gives wrong result because of typo in helper_sdiv(). This is true for QEMU 9.0.0 and earlier.
+
+Place -1 in the Y register and -128 in another reg, then -120 in another register and do SDIV into a result register, instead of the proper value of 1 for the result, the incorrect value of 0 is produced.
+
+There is a typo in target/sparc/helper.c that causes the divisor to be consider unsigned, this patch fixes it:
+
+\*\*\* helper.c.ori Tue Apr 23 16:23:45 2024 --- helper.c Mon Apr 29 20:14:07 2024
+
+---
+
+\*\*\* 121,127 \*\*\*\* return (uint32_t)(b32 \< 0 ? INT32_MAX : INT32_MIN) | (-1ull \<\< 32); }
+
+! a64 /= b; r = a64; if (unlikely(r != a64)) { return (uint32_t)(a64 \< 0 ? INT32_MIN : INT32_MAX) | (-1ull \<\< 32); --- 121,127 ---- return (uint32_t)(b32 \< 0 ? INT32_MAX : INT32_MIN) | (-1ull \<\< 32); }
+
+! a64 /= b32; r = a64; if (unlikely(r != a64)) { return (uint32_t)(a64 \< 0 ? INT32_MIN : INT32_MAX) | (-1ull \<\< 32);