diff options
author | Thomas Huth <thuth@redhat.com> | 2016-02-11 13:47:18 +0100 |
---|---|---|
committer | David Gibson <david@gibson.dropbear.id.au> | 2016-02-17 09:59:30 +1100 |
commit | 423576f771db8c6dbb944ddb8dc15b472f62de4a (patch) | |
tree | 3d6a02fcd670b7d83ee5bcb42a57b6c13ac1707a /hw | |
parent | 378bc21756f016abfde16a0de4977be49f499b1c (diff) | |
download | qemu-423576f771db8c6dbb944ddb8dc15b472f62de4a.zip qemu-423576f771db8c6dbb944ddb8dc15b472f62de4a.tar.gz qemu-423576f771db8c6dbb944ddb8dc15b472f62de4a.tar.bz2 |
hw/ppc/spapr: Add h_set_sprg0 hypercall
This is a very simple hypercall that only sets up the SPRG0
register for the guest (since writing to SPRG0 was only permitted
to the hypervisor in older versions of the PowerISA).
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw')
-rw-r--r-- | hw/ppc/spapr_hcall.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 12f8c33..63f41ec 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -332,6 +332,15 @@ static target_ulong h_read(PowerPCCPU *cpu, sPAPRMachineState *spapr, return H_SUCCESS; } +static target_ulong h_set_sprg0(PowerPCCPU *cpu, sPAPRMachineState *spapr, + target_ulong opcode, target_ulong *args) +{ + cpu_synchronize_state(CPU(cpu)); + cpu->env.spr[SPR_SPRG0] = args[0]; + + return H_SUCCESS; +} + static target_ulong h_set_dabr(PowerPCCPU *cpu, sPAPRMachineState *spapr, target_ulong opcode, target_ulong *args) { @@ -997,6 +1006,10 @@ static void hypercall_register_types(void) spapr_register_hypercall(H_REGISTER_VPA, h_register_vpa); spapr_register_hypercall(H_CEDE, h_cede); + /* processor register resource access h-calls */ + spapr_register_hypercall(H_SET_SPRG0, h_set_sprg0); + spapr_register_hypercall(H_SET_MODE, h_set_mode); + /* "debugger" hcalls (also used by SLOF). Note: We do -not- differenciate * here between the "CI" and the "CACHE" variants, they will use whatever * mapping attributes qemu is using. When using KVM, the kernel will @@ -1013,8 +1026,6 @@ static void hypercall_register_types(void) /* qemu/KVM-PPC specific hcalls */ spapr_register_hypercall(KVMPPC_H_RTAS, h_rtas); - spapr_register_hypercall(H_SET_MODE, h_set_mode); - /* ibm,client-architecture-support support */ spapr_register_hypercall(KVMPPC_H_CAS, h_client_architecture_support); } |