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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/instruction/1912934 | |
| parent | 1a3c4faf4e0a25ed0b86e8739d5319a634cb9112 (diff) | |
| download | qemu-analysis-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.tar.gz qemu-analysis-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.zip | |
restructure results
Diffstat (limited to 'results/classifier/zero-shot-user-mode/instruction/1912934')
| -rw-r--r-- | results/classifier/zero-shot-user-mode/instruction/1912934 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/results/classifier/zero-shot-user-mode/instruction/1912934 b/results/classifier/zero-shot-user-mode/instruction/1912934 new file mode 100644 index 000000000..3a8703b7f --- /dev/null +++ b/results/classifier/zero-shot-user-mode/instruction/1912934 @@ -0,0 +1,23 @@ +instruction: 0.731 +runtime: 0.190 +syscall: 0.079 + + + +QEMU emulation of fmadds instruction on powerpc64le is buggy + +The attached program test-fmadds.c tests the fmadds instruction on powerpc64le. + +Result on real hardware (POWER8E processor): +$ ./a.out ; echo $? +0 + +Result in Alpine Linux 3.13/powerpcle, emulated by QEMU 5.0.0 on Ubuntu 16.04: +$ ./a.out ; echo $? +32 + +Result in Debian 8.6.0/ppc64el, emulated by QEMU 2.9.0 on Ubuntu 16.04: +$ ./a.out ; echo $? +32 + +Through 'nm --dynamic qemu-system-ppc64 | grep fma' I can see that QEMU is NOT using the fmaf() or fma() function from the host system's libc; this function is working fine in glibc of the host system (see https://www.gnu.org/software/gnulib/manual/html_node/fmaf.html ). \ No newline at end of file |