On 18/5/26 09:07, Jay Chang wrote:
Replace manual bit manipulation with alignment macros for better
readability:
- TOR: Use ROUND_DOWN() to clear lower bits
- NAPOT: Use ROUND_UP() to set lower bits
The behavior remains unchanged.
Signed-off-by: Jay Chang <[email protected]>
---
target/riscv/pmp.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c
index de2157c830..238c7c5162 100644
--- a/target/riscv/pmp.c
+++ b/target/riscv/pmp.c
@@ -247,8 +247,9 @@ void pmp_update_rule_addr(CPURISCVState *env, uint32_t
pmp_index)
case PMP_AMATCH_TOR:
/* Bits pmpaddr[G-1:0] do not affect the TOR address-matching logic.
*/
if (g >= 1) {
- prev_addr &= ~((1ULL << g) - 1ULL);
- this_addr &= ~((1ULL << g) - 1ULL);
+ target_ulong granule = 1ULL << g;
Maybe better to directly use uint64_t, in preparation of
https://lore.kernel.org/qemu-devel/[email protected]/
+ prev_addr = ROUND_DOWN(prev_addr, granule);
+ this_addr = ROUND_DOWN(this_addr, granule);
}
