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Diffstat (limited to 'results/classifier/118/architecture-i386/984')
| -rw-r--r-- | results/classifier/118/architecture-i386/984 | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/results/classifier/118/architecture-i386/984 b/results/classifier/118/architecture-i386/984 new file mode 100644 index 000000000..989f0cab4 --- /dev/null +++ b/results/classifier/118/architecture-i386/984 @@ -0,0 +1,83 @@ +i386: 0.938 +device: 0.870 +architecture: 0.831 +performance: 0.807 +semantic: 0.790 +network: 0.753 +socket: 0.751 +files: 0.735 +PID: 0.720 +vnc: 0.711 +ppc: 0.706 +kernel: 0.697 +x86: 0.686 +permissions: 0.678 +graphic: 0.657 +register: 0.624 +debug: 0.616 +arm: 0.608 +risc-v: 0.591 +boot: 0.586 +TCG: 0.584 +VMM: 0.498 +assembly: 0.462 +hypervisor: 0.395 +user-level: 0.384 +peripherals: 0.375 +KVM: 0.336 +virtual: 0.312 +mistranslation: 0.140 +-------------------- +i386: 0.999 +x86: 0.975 +debug: 0.640 +TCG: 0.142 +assembly: 0.113 +virtual: 0.073 +files: 0.066 +register: 0.050 +hypervisor: 0.046 +performance: 0.029 +PID: 0.026 +semantic: 0.015 +architecture: 0.012 +device: 0.011 +kernel: 0.009 +user-level: 0.008 +network: 0.004 +peripherals: 0.004 +VMM: 0.004 +boot: 0.003 +graphic: 0.003 +ppc: 0.003 +risc-v: 0.003 +socket: 0.002 +vnc: 0.002 +permissions: 0.002 +KVM: 0.001 +mistranslation: 0.001 +arm: 0.000 + +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 |