Public bug reported:
When a user application triggers a 'bkpt' instruction while LPAE is
used, the bit [9] of IFSR is not correctly set during the prefetch abort
exception.
You'll find attached a minimal example to reproduce the issue (just run 'make
all').
The output I get is:
supervisor
user
prefetch
short-descriptor
The last entry should read 'long-descriptor'.
Qemu revision: 48ae1f60d8c9a770e6da64407984d84e25253c69
Ubuntu verison: 16.04 LTS
Cross Compiler: gcc linaro 6.3.1-2017.02-x86_64_arm-eabi
** Affects: qemu
Importance: Undecided
Status: New
** Attachment added: "Minimal example with linker script and makefile"
https://bugs.launchpad.net/bugs/1756927/+attachment/5084186/+files/ifsr_br.tar.gz
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https://bugs.launchpad.net/bugs/1756927
Title:
ARMv7 LPAE: IFSR doesn't have the LPAE bit in case of BKPT
Status in QEMU:
New
Bug description:
When a user application triggers a 'bkpt' instruction while LPAE is
used, the bit [9] of IFSR is not correctly set during the prefetch
abort exception.
You'll find attached a minimal example to reproduce the issue (just run 'make
all').
The output I get is:
supervisor
user
prefetch
short-descriptor
The last entry should read 'long-descriptor'.
Qemu revision: 48ae1f60d8c9a770e6da64407984d84e25253c69
Ubuntu verison: 16.04 LTS
Cross Compiler: gcc linaro 6.3.1-2017.02-x86_64_arm-eabi
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