diff options
| author | Greg Kurz <gkurz@linux.vnet.ibm.com> | 2014-05-19 19:59:05 +0200 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-06-16 13:24:36 +0200 |
| commit | 382d2db62bcb34dff7febc270783d5ff662ced7a (patch) | |
| tree | 6997e3caabed16552509587067e8daa7713c8f11 /target-ppc | |
| parent | 0c967de9c00321f893a57617a4e3dfcda05266f5 (diff) | |
target-ppc: Introduce callback for interrupt endianness
POWER7, POWER7+ and POWER8 families use the ILE bit of the LPCR
special purpose register to decide the endianness to use when
entering interrupt handlers. When running a Linux guest, this
provides a hint on the endianness used by the kernel. And when
it comes to dumping a guest, the information is needed to write
ELF headers using the kernel endianness.
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
[agraf: change subject line]
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/cpu-qom.h | 1 | ||||
| -rw-r--r-- | target-ppc/translate_init.c | 16 |
2 files changed, 17 insertions, 0 deletions
diff --git a/target-ppc/cpu-qom.h b/target-ppc/cpu-qom.h index d926d9369e..046ea0effa 100644 --- a/target-ppc/cpu-qom.h +++ b/target-ppc/cpu-qom.h @@ -76,6 +76,7 @@ typedef struct PowerPCCPUClass { int (*handle_mmu_fault)(PowerPCCPU *cpu, target_ulong eaddr, int rwx, int mmu_idx); #endif + bool (*interrupts_big_endian)(PowerPCCPU *cpu); } PowerPCCPUClass; /** diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c index 0f9dec753b..16ecada688 100644 --- a/target-ppc/translate_init.c +++ b/target-ppc/translate_init.c @@ -3111,6 +3111,18 @@ static int check_pow_hid0_74xx (CPUPPCState *env) return 0; } +static bool ppc_cpu_interrupts_big_endian_always(PowerPCCPU *cpu) +{ + return true; +} + +#ifdef TARGET_PPC64 +static bool ppc_cpu_interrupts_big_endian_lpcr(PowerPCCPU *cpu) +{ + return !(cpu->env.spr[SPR_LPCR] & LPCR_ILE); +} +#endif + /*****************************************************************************/ /* PowerPC implementations definitions */ @@ -7803,6 +7815,7 @@ POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data) POWERPC_FLAG_VSX; pcc->l1_dcache_size = 0x8000; pcc->l1_icache_size = 0x8000; + pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_lpcr; } POWERPC_FAMILY(POWER7P)(ObjectClass *oc, void *data) @@ -7861,6 +7874,7 @@ POWERPC_FAMILY(POWER7P)(ObjectClass *oc, void *data) POWERPC_FLAG_VSX; pcc->l1_dcache_size = 0x8000; pcc->l1_icache_size = 0x8000; + pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_lpcr; } static void init_proc_POWER8(CPUPPCState *env) @@ -7933,6 +7947,7 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data) POWERPC_FLAG_VSX; pcc->l1_dcache_size = 0x8000; pcc->l1_icache_size = 0x8000; + pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_lpcr; } #endif /* defined (TARGET_PPC64) */ @@ -9259,6 +9274,7 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data) pcc->parent_realize = dc->realize; pcc->pvr = CPU_POWERPC_DEFAULT_MASK; pcc->pvr_mask = CPU_POWERPC_DEFAULT_MASK; + pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_always; dc->realize = ppc_cpu_realizefn; dc->unrealize = ppc_cpu_unrealizefn; |