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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-08 13:28:15 +0200 |
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| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-08 13:28:28 +0200 |
| commit | 5aa276efcbd67f4300ca1a7f809c6e00aadb03da (patch) | |
| tree | 9b8f0e074014cda8d42f5a97a95bc25082d8b764 /results/classifier/zero-shot-user-mode/output/instruction/984 | |
| parent | 1a3c4faf4e0a25ed0b86e8739d5319a634cb9112 (diff) | |
| download | emulator-bug-study-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.tar.gz emulator-bug-study-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.zip | |
restructure results
Diffstat (limited to 'results/classifier/zero-shot-user-mode/output/instruction/984')
| -rw-r--r-- | results/classifier/zero-shot-user-mode/output/instruction/984 | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/results/classifier/zero-shot-user-mode/output/instruction/984 b/results/classifier/zero-shot-user-mode/output/instruction/984 deleted file mode 100644 index 466f91cf..00000000 --- a/results/classifier/zero-shot-user-mode/output/instruction/984 +++ /dev/null @@ -1,29 +0,0 @@ -instruction: 0.800 -syscall: 0.122 -runtime: 0.078 - - - -QEMU i386 fldl instruction is affected by the precision control bits of the FPU control word -Description of problem: -~~The QEMU softfloat float64_to_floatx80 implementation is broken and does not produce correct results.~~ QEMU i386 fldl instruction is affected by the precision control bits of the FPU control word. - -``` -IN = 1234.567890 (0x40934a4584f4c6e7) -OUT = 1234.567871 (0x40099a522c0000000000) -``` - -This bug was introduced in the QEMU commit qemu/qemu@8ae5719 as part of the switchover to FloatParts, and is still present in the latest tag (v7.0.0-rc4 as of now). - -Prior to the offending commit: - -``` -IN = 1234.567890 (0x40934a4584f4c6e7) -OUT = 1234.567890 (0x40099a522c27a6373800) -``` - -This breaks the i386 emulation of `fldl st(0)` (`helper_fldl_ST0`). -Steps to reproduce: -Call `float64_to_floatx80` with the input value of `1234.567890 (0x40934a4584f4c6e7)` and see the returned result. -Additional information: -See https://github.com/zephyrproject-rtos/sdk-ng/issues/461 |