yuzu/unicorn
1
0
Fork 0
mirror of https://github.com/yuzu-emu/unicorn.git synced 2024-12-23 16:45:32 +00:00
Code Issues Packages Projects Releases Wiki Activity

arm: Use the mmu_idx we're passed in arm_cpu_do_unaligned_access()

Browse source 
When identifying the DFSR format for an alignment fault, use
the mmu index that we are passed, rather than calling cpu_mmu_index()
to get the mmu index for the current CPU state. This doesn't actually
make any difference since the only cases where the current MMU index
differs from the index used for the load are the "unprivileged
load/store" instructions, and in that case the mmu index may
differ but the translation regime is the same (apart from the
"use from Hyp mode" case which is UNPREDICTABLE).
However it's the more logical thing to do.

Backports commit e517d95b63427fae9f03958dbc005c36b4ebf2cf from qemu
This commit is contained in:
Peter Maydell 2018-03-02 15:33:23 -05:00 committed by Lioncash
parent fce1b469e5
commit 4789e49c4d
No known key found for this signature in database
GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
qemu/target/arm/op_helper.c
View file

@ -207,7 +207,7 @@ void arm_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
/* the DFSR for an alignment fault depends on whether we're using
* the LPAE long descriptor format, or the short descriptor format
*/
if (arm_s1_regime_using_lpae_format(env, cpu_mmu_index(env, false))) {
if (arm_s1_regime_using_lpae_format(env, mmu_idx)) {
env->exception.fsr = (1 << 9) | 0x21;
} else {
env->exception.fsr = 0x1;