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authorRichard Henderson <richard.henderson@linaro.org>2024-10-05 05:11:34 -0700
committerRichard Henderson <richard.henderson@linaro.org>2024-10-13 11:27:05 -0700
commit32142b807726e56b422c6990454f5dca0ef8d80f (patch)
tree8abdbbcc3fb2bfcec467ca357a3190b955b5555a
parent4e6939c9344cd99059571c51457d7f024d1572de (diff)
target/hppa: Perform access rights before protection id check
In Chapter 5, Interruptions, the group 3 exceptions lists "Data memory access rights trap" in priority order ahead of "Data memory protection ID trap". Swap these checks in hppa_get_physical_address. Reviewed-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
-rw-r--r--target/hppa/mem_helper.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/target/hppa/mem_helper.c b/target/hppa/mem_helper.c
index a386c80fa4..f027c494e2 100644
--- a/target/hppa/mem_helper.c
+++ b/target/hppa/mem_helper.c
@@ -267,6 +267,12 @@ int hppa_get_physical_address(CPUHPPAState *env, vaddr addr, int mmu_idx,
goto egress;
}
+ if (unlikely(!(prot & type))) {
+ /* Not allowed -- Inst/Data Memory Access Rights Fault. */
+ ret = (type & PAGE_EXEC) ? EXCP_IMP : EXCP_DMAR;
+ goto egress;
+ }
+
/* access_id == 0 means public page and no check is performed */
if (ent->access_id && MMU_IDX_TO_P(mmu_idx)) {
int access_prot = (hppa_is_pa20(env)
@@ -281,12 +287,6 @@ int hppa_get_physical_address(CPUHPPAState *env, vaddr addr, int mmu_idx,
prot &= access_prot;
}
- if (unlikely(!(prot & type))) {
- /* Not allowed -- Inst/Data Memory Access Rights Fault. */
- ret = (type & PAGE_EXEC) ? EXCP_IMP : EXCP_DMAR;
- goto egress;
- }
-
/*
* In priority order, check for conditions which raise faults.
* Remove PROT bits that cover the condition we want to check,