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Diffstat (limited to 'results/scraper/launchpad-without-comments/1887854')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1887854 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1887854 b/results/scraper/launchpad-without-comments/1887854 new file mode 100644 index 00000000..04962695 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1887854 @@ -0,0 +1,23 @@ +Spurious Data Abort on qemu-system-aarch64 + +When running RTEMS test psxndbm01.exe built for AArch64-ilp32 (this code is not yet publically available), the test generates a spurious data abort (the MMU and alignment checks should be disabled according to bits 1, 0 of SCTLR_EL1). The abort information is as follows: +Taking exception 4 [Data Abort] +...from EL1 to EL1 +...with ESR 0x25/0x96000010 +...with FAR 0x104010ca28 +...with ELR 0x400195d8 +...to EL1 PC 0x40018200 PSTATE 0x3c5 + +The ESR indicates that a synchronous external abort has occurred. +ESR EC field: 0b100101 + +From the ARMv8 technical manual: Data Abort taken without a change in Exception level. Used for MMU faults generated by data accesses, alignment faults other than those caused by Stack Pointer misalignment, and synchronous External aborts, including synchronous parity or ECC errors. Not used for debug related exceptions. + +ESR ISS field: 0b10000 + +From the ARMv8 technical manual: Synchronous External abort, not on translation table walk or hardware update of translation table. + +The following command line is used to invoke qemu: +qemu-system-aarch64 -machine virt -cpu cortex-a53 -m 256M -no-reboot -nographic -serial mon:stdio -kernel build/aarch64/a53_ilp32_qemu/testsuites/psxtests/psxndbm01.exe -D qemu.log -d in_asm,int,cpu_reset,unimp,guest_errors + +This occurs on Qemu 3.1.0 as distributed via Debian and on Qemu 4.1 as built by the RTEMS source builder (4.1+minor patches). \ No newline at end of file |