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[Qemu-ppc] [PATCH 5/8] ppc: Enforce setting MSR:EE, IR and DR when MSR:P
From: |
Cédric Le Goater |
Subject: |
[Qemu-ppc] [PATCH 5/8] ppc: Enforce setting MSR:EE, IR and DR when MSR:PR is set |
Date: |
Mon, 27 Jun 2016 08:55:18 +0200 |
From: Benjamin Herrenschmidt <address@hidden>
The architecture specifies that any instruction that sets MSR:PR will also
set MSR:EE, IR and DR.
Signed-off-by: Benjamin Herrenschmidt <address@hidden>
Signed-off-by: Cédric Le Goater <address@hidden>
---
target-ppc/helper_regs.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/target-ppc/helper_regs.h b/target-ppc/helper_regs.h
index 8fc09344db29..8fdfa5c7e6ab 100644
--- a/target-ppc/helper_regs.h
+++ b/target-ppc/helper_regs.h
@@ -136,6 +136,10 @@ static inline int hreg_store_msr(CPUPPCState *env,
target_ulong value,
/* Change the exception prefix on PowerPC 601 */
env->excp_prefix = ((value >> MSR_EP) & 1) * 0xFFF00000;
}
+ /* If PR=1 then EE, IR and DR must be 1 */
+ if ((value >> MSR_PR) & 1) {
+ value |= (1 << MSR_EE) | (1 << MSR_DR) | (1 << MSR_IR);
+ }
#endif
env->msr = value;
hreg_compute_hflags(env);
--
2.1.4
- [Qemu-ppc] [PATCH 0/8] pnv: more fixes to the exception model, Cédric Le Goater, 2016/06/27
- [Qemu-ppc] [PATCH 1/8] ppc: Add a bunch of hypervisor SPRs to Book3s, Cédric Le Goater, 2016/06/27
- [Qemu-ppc] [PATCH 2/8] ppc: Update LPCR definitions, Cédric Le Goater, 2016/06/27
- [Qemu-ppc] [PATCH 3/8] ppc: Use a helper to filter writes to LPCR, Cédric Le Goater, 2016/06/27
- [Qemu-ppc] [PATCH 4/8] ppc: Fix conditions for delivering external interrupts to a guest, Cédric Le Goater, 2016/06/27
- [Qemu-ppc] [PATCH 5/8] ppc: Enforce setting MSR:EE, IR and DR when MSR:PR is set,
Cédric Le Goater <=
- [Qemu-ppc] [PATCH 6/8] ppc: Initial HDEC support, Cédric Le Goater, 2016/06/27
- [Qemu-ppc] [PATCH 7/8] ppc: LPCR is a HV resource, Cédric Le Goater, 2016/06/27
- [Qemu-ppc] [PATCH 8/8] ppc: Print HSRR0/HSRR1 in "info registers", Cédric Le Goater, 2016/06/27
- Re: [Qemu-ppc] [PATCH 0/8] pnv: more fixes to the exception model, David Gibson, 2016/06/28