motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 00:03:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

target-s390x: PER: add Breaking-Event-Address register

Browse source 
This patch adds support for PER Breaking-Event-Address register. Like
real hardware, it save the current PSW address when the PSW address is
changed by an instruction. We have to take care of optimizations QEMU
does, a branch to the next instruction is still a branch.

This register is copied to low core memory when a program exception
happens.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Aurelien Jarno 2015-06-13 00:46:03 +02:00 • committed by Alexander Graf
parent 83bb161299
commit 3da0ab3529
4 changed files with 37 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

1
target-s390x/helper.c
View file

@ -293,6 +293,7 @@ static void do_program_interrupt(CPUS390XState *env)
lowcore->program_old_psw.addr = cpu_to_be64(env->psw.addr);
mask = be64_to_cpu(lowcore->program_new_psw.mask);
addr = be64_to_cpu(lowcore->program_new_psw.addr);
lowcore->per_breaking_event_addr = cpu_to_be64(env->gbea);
cpu_unmap_lowcore(lowcore);