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[Qemu-devel] [PATCH] [PATCH] target/riscv/pmp.c: pmpcfg_csr_read return
From: |
Dayeol Lee |
Subject: |
[Qemu-devel] [PATCH] [PATCH] target/riscv/pmp.c: pmpcfg_csr_read return type demotion |
Date: |
Thu, 18 Oct 2018 06:44:26 +0000 |
There is a data type demotion bug in target/riscv/pmp.c
When the target_ulong is 8 bytes, pmpcfg_csr_read returns only lower 4
bytes.
---
target/riscv/pmp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c
index c828950..4b6c20e 100644
--- a/target/riscv/pmp.c
+++ b/target/riscv/pmp.c
@@ -337,7 +337,7 @@ target_ulong pmpcfg_csr_read(CPURISCVState *env, uint32_t
reg_index)
for (i = 0; i < sizeof(target_ulong); i++) {
val = pmp_read_cfg(env, (reg_index * sizeof(target_ulong)) + i);
- cfg_val |= (val << (i * 8));
+ cfg_val |= ((target_ulong)val << ((target_ulong)i * 8));
}
PMP_DEBUG("hart " TARGET_FMT_ld ": reg%d, val: 0x" TARGET_FMT_lx,
--
2.7.4
- [Qemu-devel] [PATCH] [PATCH] target/riscv/pmp.c: pmpcfg_csr_read return type demotion,
Dayeol Lee <=