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[PATCH v2 17/35] target/riscv: Extend the SIP CSR to support virtulisati
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From: |
Alistair Francis |
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Subject: |
[PATCH v2 17/35] target/riscv: Extend the SIP CSR to support virtulisation |
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Date: |
Fri, 31 Jan 2020 17:02:20 -0800 |
Signed-off-by: Alistair Francis <address@hidden>
Reviewed-by: Palmer Dabbelt <address@hidden>
---
target/riscv/csr.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 918678789a..2e6700bbeb 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -743,8 +743,19 @@ static int write_sbadaddr(CPURISCVState *env, int csrno,
target_ulong val)
static int rmw_sip(CPURISCVState *env, int csrno, target_ulong *ret_value,
target_ulong new_value, target_ulong write_mask)
{
- int ret = rmw_mip(env, CSR_MSTATUS, ret_value, new_value,
+ int ret;
+
+ if (riscv_cpu_virt_enabled(env)) {
+ /* Shift the new values to line up with the VS bits */
+ ret = rmw_mip(env, CSR_MSTATUS, ret_value, new_value << 1,
+ (write_mask & sip_writable_mask) << 1 & env->mideleg);
+ ret &= vsip_writable_mask;
+ ret >>= 1;
+ } else {
+ ret = rmw_mip(env, CSR_MSTATUS, ret_value, new_value,
write_mask & env->mideleg & sip_writable_mask);
+ }
+
*ret_value &= env->mideleg;
return ret;
}
--
2.25.0
- [PATCH v2 05/35] target/riscv: Rename the H irqs to VS irqs, (continued)
- [PATCH v2 05/35] target/riscv: Rename the H irqs to VS irqs, Alistair Francis, 2020/01/31
- [PATCH v2 06/35] target/riscv: Add the virtulisation mode, Alistair Francis, 2020/01/31
- [PATCH v2 07/35] target/riscv: Add the force HS exception mode, Alistair Francis, 2020/01/31
- [PATCH v2 08/35] target/riscv: Fix CSR perm checking for HS mode, Alistair Francis, 2020/01/31
- [PATCH v2 09/35] target/riscv: Print priv and virt in disas log, Alistair Francis, 2020/01/31
- [PATCH v2 10/35] target/riscv: Dump Hypervisor registers if enabled, Alistair Francis, 2020/01/31
- [PATCH v2 11/35] target/riscv: Add Hypervisor CSR access functions, Alistair Francis, 2020/01/31
- [PATCH v2 12/35] target/riscv: Add Hypervisor virtual CSRs accesses, Alistair Francis, 2020/01/31
- [PATCH v2 13/35] target/riscv: Add Hypervisor machine CSRs accesses, Alistair Francis, 2020/01/31
- [PATCH v2 14/35] target/riscv: Add virtual register swapping function, Alistair Francis, 2020/01/31
- [PATCH v2 17/35] target/riscv: Extend the SIP CSR to support virtulisation,
Alistair Francis <=
- [PATCH v2 15/35] target/riscv: Set VS bits in mideleg for Hyp extension, Alistair Francis, 2020/01/31
- [PATCH v2 16/35] target/riscv: Extend the MIE CSR to support virtulisation, Alistair Francis, 2020/01/31
- [PATCH v2 18/35] target/riscv: Add support for virtual interrupt setting, Alistair Francis, 2020/01/31
- [PATCH v2 21/35] target/riscv: Add hypvervisor trap support, Alistair Francis, 2020/01/31
- [PATCH v2 19/35] target/ricsv: Flush the TLB on virtulisation mode changes, Alistair Francis, 2020/01/31
- [PATCH v2 20/35] target/riscv: Generate illegal instruction on WFI when V=1, Alistair Francis, 2020/01/31
- [PATCH v2 25/35] target/riscv: Only set TB flags with FP status if enabled, Alistair Francis, 2020/01/31
- [PATCH v2 22/35] target/riscv: Add Hypervisor trap return support, Alistair Francis, 2020/01/31
- [PATCH v2 24/35] target/riscv: Remove the hret instruction, Alistair Francis, 2020/01/31
- [PATCH v2 23/35] target/riscv: Add hfence instructions, Alistair Francis, 2020/01/31