diff options
Diffstat (limited to 'target/ppc/cpu.h')
| -rw-r--r-- | target/ppc/cpu.h | 145 |
1 files changed, 54 insertions, 91 deletions
diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h index c3b0a00064..b283042515 100644 --- a/target/ppc/cpu.h +++ b/target/ppc/cpu.h @@ -960,116 +960,88 @@ struct ppc_radix_page_info { #define PPC_CPU_INDIRECT_OPCODES_LEN 0x20 struct CPUPPCState { - /* - * First are the most commonly used resources during translated - * code execution - */ - /* general purpose registers */ - target_ulong gpr[32]; - /* Storage for GPR MSB, used by the SPE extension */ - target_ulong gprh[32]; - /* LR */ + /* Most commonly used resources during translated code execution first */ + target_ulong gpr[32]; /* general purpose registers */ + target_ulong gprh[32]; /* storage for GPR MSB, used by the SPE extension */ target_ulong lr; - /* CTR */ target_ulong ctr; - /* condition register */ - uint32_t crf[8]; + uint32_t crf[8]; /* condition register */ #if defined(TARGET_PPC64) - /* CFAR */ target_ulong cfar; #endif - /* XER (with SO, OV, CA split out) */ - target_ulong xer; + target_ulong xer; /* XER (with SO, OV, CA split out) */ target_ulong so; target_ulong ov; target_ulong ca; target_ulong ov32; target_ulong ca32; - /* Reservation address */ - target_ulong reserve_addr; - /* Reservation value */ - target_ulong reserve_val; - target_ulong reserve_val2; - /* Those ones are used in supervisor mode only */ - /* machine state register */ - target_ulong msr; - /* temporary general purpose registers */ - target_ulong tgpr[4]; /* Used to speed-up TLB assist handlers */ + target_ulong reserve_addr; /* Reservation address */ + target_ulong reserve_val; /* Reservation value */ + target_ulong reserve_val2; - /* Next instruction pointer */ - target_ulong nip; + /* These are used in supervisor mode only */ + target_ulong msr; /* machine state register */ + target_ulong tgpr[4]; /* temporary general purpose registers, */ + /* used to speed-up TLB assist handlers */ - /* High part of 128-bit helper return. */ - uint64_t retxh; + target_ulong nip; /* next instruction pointer */ + uint64_t retxh; /* high part of 128-bit helper return */ /* when a memory exception occurs, the access type is stored here */ int access_type; - /* MMU context - only relevant for full system emulation */ #if !defined(CONFIG_USER_ONLY) + /* MMU context, only relevant for full system emulation */ #if defined(TARGET_PPC64) - /* PowerPC 64 SLB area */ - ppc_slb_t slb[MAX_SLB_ENTRIES]; - /* tcg TLB needs flush (deferred slb inval instruction typically) */ + ppc_slb_t slb[MAX_SLB_ENTRIES]; /* PowerPC 64 SLB area */ #endif - /* segment registers */ - target_ulong sr[32]; - /* BATs */ - uint32_t nb_BATs; + target_ulong sr[32]; /* segment registers */ + uint32_t nb_BATs; /* number of BATs */ target_ulong DBAT[2][8]; target_ulong IBAT[2][8]; /* PowerPC TLB registers (for 4xx, e500 and 60x software driven TLBs) */ - int32_t nb_tlb; /* Total number of TLB */ + int32_t nb_tlb; /* Total number of TLB */ int tlb_per_way; /* Speed-up helper: used to avoid divisions at run time */ - int nb_ways; /* Number of ways in the TLB set */ - int last_way; /* Last used way used to allocate TLB in a LRU way */ + int nb_ways; /* Number of ways in the TLB set */ + int last_way; /* Last used way used to allocate TLB in a LRU way */ int id_tlbs; /* If 1, MMU has separated TLBs for instructions & data */ - int nb_pids; /* Number of available PID registers */ - int tlb_type; /* Type of TLB we're dealing with */ - ppc_tlb_t tlb; /* TLB is optional. Allocate them only if needed */ - /* 403 dedicated access protection registers */ - target_ulong pb[4]; - bool tlb_dirty; /* Set to non-zero when modifying TLB */ - bool kvm_sw_tlb; /* non-zero if KVM SW TLB API is active */ + int nb_pids; /* Number of available PID registers */ + int tlb_type; /* Type of TLB we're dealing with */ + ppc_tlb_t tlb; /* TLB is optional. Allocate them only if needed */ + target_ulong pb[4]; /* 403 dedicated access protection registers */ + bool tlb_dirty; /* Set to non-zero when modifying TLB */ + bool kvm_sw_tlb; /* non-zero if KVM SW TLB API is active */ uint32_t tlb_need_flush; /* Delayed flush needed */ #define TLB_NEED_LOCAL_FLUSH 0x1 #define TLB_NEED_GLOBAL_FLUSH 0x2 #endif /* Other registers */ - /* Special purpose registers */ - target_ulong spr[1024]; + target_ulong spr[1024]; /* special purpose registers */ ppc_spr_t spr_cb[1024]; - /* Vector status and control register, minus VSCR_SAT. */ + /* Vector status and control register, minus VSCR_SAT */ uint32_t vscr; /* VSX registers (including FP and AVR) */ ppc_vsr_t vsr[64] QEMU_ALIGNED(16); - /* Non-zero if and only if VSCR_SAT should be set. */ + /* Non-zero if and only if VSCR_SAT should be set */ ppc_vsr_t vscr_sat QEMU_ALIGNED(16); /* SPE registers */ uint64_t spe_acc; uint32_t spe_fscr; - /* - * SPE and Altivec can share a status since they will never be - * used simultaneously - */ + /* SPE and Altivec share status as they'll never be used simultaneously */ float_status vec_status; - /* Floating point execution context */ - float_status fp_status; - /* floating point status and control register */ - target_ulong fpscr; + float_status fp_status; /* Floating point execution context */ + target_ulong fpscr; /* Floating point status and control register */ /* Internal devices resources */ - /* Time base and decrementer */ - ppc_tb_t *tb_env; - /* Device control registers */ - ppc_dcr_t *dcr_env; + ppc_tb_t *tb_env; /* Time base and decrementer */ + ppc_dcr_t *dcr_env; /* Device control registers */ int dcache_line_size; int icache_line_size; - /* Those resources are used during exception processing */ + /* These resources are used during exception processing */ /* CPU model definition */ target_ulong msr_mask; powerpc_mmu_t mmu_model; @@ -1088,58 +1060,49 @@ struct CPUPPCState { uint32_t pending_interrupts; #if !defined(CONFIG_USER_ONLY) /* - * This is the IRQ controller, which is implementation dependent - * and only relevant when emulating a complete machine. Note that - * this isn't used by recent Book3s compatible CPUs (POWER7 and - * newer). + * This is the IRQ controller, which is implementation dependent and only + * relevant when emulating a complete machine. Note that this isn't used + * by recent Book3s compatible CPUs (POWER7 and newer). */ uint32_t irq_input_state; void **irq_inputs; - /* Exception vectors */ - target_ulong excp_vectors[POWERPC_EXCP_NB]; + + target_ulong excp_vectors[POWERPC_EXCP_NB]; /* Exception vectors */ target_ulong excp_prefix; target_ulong ivor_mask; target_ulong ivpr_mask; target_ulong hreset_vector; hwaddr mpic_iack; - /* true when the external proxy facility mode is enabled */ - bool mpic_proxy; - /* - * set when the processor has an HV mode, thus HV priv - * instructions and SPRs are diallowed if MSR:HV is 0 - */ - bool has_hv_mode; - + bool mpic_proxy; /* true if the external proxy facility mode is enabled */ + bool has_hv_mode; /* set when the processor has an HV mode, thus HV priv */ + /* instructions and SPRs are diallowed if MSR:HV is 0 */ /* - * On P7/P8/P9, set when in PM state, we need to handle resume in - * a special way (such as routing some resume causes to 0x100, ie, - * sreset), so flag this here. + * On P7/P8/P9, set when in PM state so we need to handle resume in a + * special way (such as routing some resume causes to 0x100, i.e. sreset). */ bool resume_as_sreset; #endif - /* Those resources are used only in QEMU core */ - target_ulong hflags; /* hflags is a MSR & HFLAGS_MASK */ + /* These resources are used only in QEMU core */ + target_ulong hflags; /* hflags is MSR & HFLAGS_MASK */ target_ulong hflags_nmsr; /* specific hflags, not coming from MSR */ - int immu_idx; /* precomputed MMU index to speed up insn access */ - int dmmu_idx; /* precomputed MMU index to speed up data accesses */ + int immu_idx; /* precomputed MMU index to speed up insn accesses */ + int dmmu_idx; /* precomputed MMU index to speed up data accesses */ /* Power management */ int (*check_pow)(CPUPPCState *env); #if !defined(CONFIG_USER_ONLY) - void *load_info; /* Holds boot loading state. */ + void *load_info; /* holds boot loading state */ #endif /* booke timers */ /* - * Specifies bit locations of the Time Base used to signal a fixed - * timer exception on a transition from 0 to 1. (watchdog or - * fixed-interval timer) + * Specifies bit locations of the Time Base used to signal a fixed timer + * exception on a transition from 0 to 1 (watchdog or fixed-interval timer) * - * 0 selects the least significant bit. - * 63 selects the most significant bit. + * 0 selects the least significant bit, 63 selects the most significant bit */ uint8_t fit_period[4]; uint8_t wdt_period[4]; |