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target/ppc: add support for Hypervisor Facility Unavailable Exception

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The privileged message send and clear instructions (msgsndp & msgclrp)
are privileged, but will generate a hypervisor facility unavailable
exception if not enabled in the HFSCR and executed in privileged
non-hypervisor state.

Add checks when accessing the DPDES register and when using the
msgsndp and msgclrp isntructions.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200120104935.24449-3-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2020-01-20 11:49:35 +01:00 • committed by David Gibson
parent 5ba7ba1da0
commit 493028d8d7
3 changed files with 46 additions and 0 deletions
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6
target/ppc/cpu.h
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@ -397,6 +397,10 @@ typedef struct ppc_v3_pate_t {
#define PSSCR_ESL PPC_BIT(42) /* Enable State Loss */
#define PSSCR_EC PPC_BIT(43) /* Exit Criterion */
/* HFSCR bits */
#define HFSCR_MSGP PPC_BIT(53) /* Privileged Message Send Facilities */
#define HFSCR_IC_MSGP 0xA
#define msr_sf ((env->msr >> MSR_SF) & 1)
#define msr_isf ((env->msr >> MSR_ISF) & 1)
#define msr_shv ((env->msr >> MSR_SHV) & 1)
@ -1329,6 +1333,8 @@ void cpu_ppc_set_vhyp(PowerPCCPU *cpu, PPCVirtualHypervisor *vhyp);
#endif
void store_fpscr(CPUPPCState *env, uint64_t arg, uint32_t mask);
void helper_hfscr_facility_check(CPUPPCState *env, uint32_t bit,
const char *caller, uint32_t cause);
static inline uint64_t ppc_dump_gpr(CPUPPCState *env, int gprn)
{