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xemu/target-sparc/cpu.h
aliguori 6b9175478e Refactor translation block CPU state handling (Jan Kiszka) 
This patch refactors the way the CPU state is handled that is associated
with a TB. The basic motivation is to move more arch specific code out
of generic files. Specifically the long #ifdef clutter in tb_find_fast()
has to be overcome in order to avoid duplicating it for the gdb
watchpoint fixes (patch "Restore pc on watchpoint hits").

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5736 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-18 19:46:41 +00:00

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#ifndef CPU_SPARC_H
#define CPU_SPARC_H
#include "config.h"
#if !defined(TARGET_SPARC64)
#define TARGET_LONG_BITS 32
#define TARGET_FPREGS 32
#define TARGET_PAGE_BITS 12 /* 4k */
#else
#define TARGET_LONG_BITS 64
#define TARGET_FPREGS 64
#define TARGET_PAGE_BITS 13 /* 8k */
#endif
#define TARGET_PHYS_ADDR_BITS 64
#include "cpu-defs.h"
#include "softfloat.h"
#define TARGET_HAS_ICE 1
#if !defined(TARGET_SPARC64)
#define ELF_MACHINE EM_SPARC
#else
#define ELF_MACHINE EM_SPARCV9
#endif
/*#define EXCP_INTERRUPT 0x100*/
/* trap definitions */
#ifndef TARGET_SPARC64
#define TT_TFAULT 0x01
#define TT_ILL_INSN 0x02
#define TT_PRIV_INSN 0x03
#define TT_NFPU_INSN 0x04
#define TT_WIN_OVF 0x05
#define TT_WIN_UNF 0x06
#define TT_UNALIGNED 0x07
#define TT_FP_EXCP 0x08
#define TT_DFAULT 0x09
#define TT_TOVF 0x0a
#define TT_EXTINT 0x10
#define TT_CODE_ACCESS 0x21
#define TT_UNIMP_FLUSH 0x25
#define TT_DATA_ACCESS 0x29
#define TT_DIV_ZERO 0x2a
#define TT_NCP_INSN 0x24
#define TT_TRAP 0x80
#else
#define TT_TFAULT 0x08
#define TT_CODE_ACCESS 0x0a
#define TT_ILL_INSN 0x10
#define TT_UNIMP_FLUSH TT_ILL_INSN
#define TT_PRIV_INSN 0x11
#define TT_NFPU_INSN 0x20
#define TT_FP_EXCP 0x21
#define TT_TOVF 0x23
#define TT_CLRWIN 0x24
#define TT_DIV_ZERO 0x28
#define TT_DFAULT 0x30
#define TT_DATA_ACCESS 0x32
#define TT_UNALIGNED 0x34
#define TT_PRIV_ACT 0x37
#define TT_EXTINT 0x40
#define TT_IVEC 0x60
#define TT_TMISS 0x64
#define TT_DMISS 0x68
#define TT_DPROT 0x6c
#define TT_SPILL 0x80
#define TT_FILL 0xc0
#define TT_WOTHER 0x10
#define TT_TRAP 0x100
#endif
#define PSR_NEG_SHIFT 23
#define PSR_NEG (1 << PSR_NEG_SHIFT)
#define PSR_ZERO_SHIFT 22
#define PSR_ZERO (1 << PSR_ZERO_SHIFT)
#define PSR_OVF_SHIFT 21
#define PSR_OVF (1 << PSR_OVF_SHIFT)
#define PSR_CARRY_SHIFT 20
#define PSR_CARRY (1 << PSR_CARRY_SHIFT)
#define PSR_ICC (PSR_NEG|PSR_ZERO|PSR_OVF|PSR_CARRY)
#define PSR_EF (1<<12)
#define PSR_PIL 0xf00
#define PSR_S (1<<7)
#define PSR_PS (1<<6)
#define PSR_ET (1<<5)
#define PSR_CWP 0x1f
/* Trap base register */
#define TBR_BASE_MASK 0xfffff000
#if defined(TARGET_SPARC64)
#define PS_IG (1<<11)
#define PS_MG (1<<10)
#define PS_RMO (1<<7)
#define PS_RED (1<<5)
#define PS_PEF (1<<4)
#define PS_AM (1<<3)
#define PS_PRIV (1<<2)
#define PS_IE (1<<1)
#define PS_AG (1<<0)
#define FPRS_FEF (1<<2)
#define HS_PRIV (1<<2)
#endif
/* Fcc */
#define FSR_RD1 (1ULL << 31)
#define FSR_RD0 (1ULL << 30)
#define FSR_RD_MASK (FSR_RD1 | FSR_RD0)
#define FSR_RD_NEAREST 0
#define FSR_RD_ZERO FSR_RD0
#define FSR_RD_POS FSR_RD1
#define FSR_RD_NEG (FSR_RD1 | FSR_RD0)
#define FSR_NVM (1ULL << 27)
#define FSR_OFM (1ULL << 26)
#define FSR_UFM (1ULL << 25)
#define FSR_DZM (1ULL << 24)
#define FSR_NXM (1ULL << 23)
#define FSR_TEM_MASK (FSR_NVM | FSR_OFM | FSR_UFM | FSR_DZM | FSR_NXM)
#define FSR_NVA (1ULL << 9)
#define FSR_OFA (1ULL << 8)
#define FSR_UFA (1ULL << 7)
#define FSR_DZA (1ULL << 6)
#define FSR_NXA (1ULL << 5)
#define FSR_AEXC_MASK (FSR_NVA | FSR_OFA | FSR_UFA | FSR_DZA | FSR_NXA)
#define FSR_NVC (1ULL << 4)
#define FSR_OFC (1ULL << 3)
#define FSR_UFC (1ULL << 2)
#define FSR_DZC (1ULL << 1)
#define FSR_NXC (1ULL << 0)
#define FSR_CEXC_MASK (FSR_NVC | FSR_OFC | FSR_UFC | FSR_DZC | FSR_NXC)
#define FSR_FTT2 (1ULL << 16)
#define FSR_FTT1 (1ULL << 15)
#define FSR_FTT0 (1ULL << 14)
//gcc warns about constant overflow for ~FSR_FTT_MASK
//#define FSR_FTT_MASK (FSR_FTT2 | FSR_FTT1 | FSR_FTT0)
#ifdef TARGET_SPARC64
#define FSR_FTT_NMASK 0xfffffffffffe3fffULL
#define FSR_FTT_CEXC_NMASK 0xfffffffffffe3fe0ULL
#define FSR_LDFSR_OLDMASK 0x0000003f000fc000ULL
#define FSR_LDXFSR_MASK 0x0000003fcfc00fffULL
#define FSR_LDXFSR_OLDMASK 0x00000000000fc000ULL
#else
#define FSR_FTT_NMASK 0xfffe3fffULL
#define FSR_FTT_CEXC_NMASK 0xfffe3fe0ULL
#define FSR_LDFSR_OLDMASK 0x000fc000ULL
#endif
#define FSR_LDFSR_MASK 0xcfc00fffULL
#define FSR_FTT_IEEE_EXCP (1ULL << 14)
#define FSR_FTT_UNIMPFPOP (3ULL << 14)
#define FSR_FTT_SEQ_ERROR (4ULL << 14)
#define FSR_FTT_INVAL_FPR (6ULL << 14)
#define FSR_FCC1_SHIFT 11
#define FSR_FCC1 (1ULL << FSR_FCC1_SHIFT)
#define FSR_FCC0_SHIFT 10
#define FSR_FCC0 (1ULL << FSR_FCC0_SHIFT)
/* MMU */
#define MMU_E (1<<0)
#define MMU_NF (1<<1)
#define PTE_ENTRYTYPE_MASK 3
#define PTE_ACCESS_MASK 0x1c
#define PTE_ACCESS_SHIFT 2
#define PTE_PPN_SHIFT 7
#define PTE_ADDR_MASK 0xffffff00
#define PG_ACCESSED_BIT 5
#define PG_MODIFIED_BIT 6
#define PG_CACHE_BIT 7
#define PG_ACCESSED_MASK (1 << PG_ACCESSED_BIT)
#define PG_MODIFIED_MASK (1 << PG_MODIFIED_BIT)
#define PG_CACHE_MASK (1 << PG_CACHE_BIT)
/* 3 <= NWINDOWS <= 32. */
#define MIN_NWINDOWS 3
#define MAX_NWINDOWS 32
#if !defined(TARGET_SPARC64)
#define NB_MMU_MODES 2
#else
#define NB_MMU_MODES 3
typedef struct trap_state {
uint64_t tpc;
uint64_t tnpc;
uint64_t tstate;
uint32_t tt;
} trap_state;
#endif
typedef struct sparc_def_t {
const char *name;
target_ulong iu_version;
uint32_t fpu_version;
uint32_t mmu_version;
uint32_t mmu_bm;
uint32_t mmu_ctpr_mask;
uint32_t mmu_cxr_mask;
uint32_t mmu_sfsr_mask;
uint32_t mmu_trcr_mask;
uint32_t features;
uint32_t nwindows;
uint32_t maxtl;
} sparc_def_t;
#define CPU_FEATURE_FLOAT (1 << 0)
#define CPU_FEATURE_FLOAT128 (1 << 1)
#define CPU_FEATURE_SWAP (1 << 2)
#define CPU_FEATURE_MUL (1 << 3)
#define CPU_FEATURE_DIV (1 << 4)
#define CPU_FEATURE_FLUSH (1 << 5)
#define CPU_FEATURE_FSQRT (1 << 6)
#define CPU_FEATURE_FMUL (1 << 7)
#define CPU_FEATURE_VIS1 (1 << 8)
#define CPU_FEATURE_VIS2 (1 << 9)
#define CPU_FEATURE_FSMULD (1 << 10)
#define CPU_FEATURE_HYPV (1 << 11)
#define CPU_FEATURE_CMT (1 << 12)
#define CPU_FEATURE_GL (1 << 13)
#ifndef TARGET_SPARC64
#define CPU_DEFAULT_FEATURES (CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP | \
CPU_FEATURE_MUL | CPU_FEATURE_DIV | \
CPU_FEATURE_FLUSH | CPU_FEATURE_FSQRT | \
CPU_FEATURE_FMUL | CPU_FEATURE_FSMULD)
#else
#define CPU_DEFAULT_FEATURES (CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP | \
CPU_FEATURE_MUL | CPU_FEATURE_DIV | \
CPU_FEATURE_FLUSH | CPU_FEATURE_FSQRT | \
CPU_FEATURE_FMUL | CPU_FEATURE_VIS1 | \
CPU_FEATURE_VIS2 | CPU_FEATURE_FSMULD)
enum {
mmu_us_12, // Ultrasparc < III (64 entry TLB)
mmu_us_3, // Ultrasparc III (512 entry TLB)
mmu_us_4, // Ultrasparc IV (several TLBs, 32 and 256MB pages)
mmu_sun4v, // T1, T2
};
#endif
typedef struct CPUSPARCState {
target_ulong gregs[8]; /* general registers */
target_ulong *regwptr; /* pointer to current register window */
target_ulong pc; /* program counter */
target_ulong npc; /* next program counter */
target_ulong y; /* multiply/divide register */
/* emulator internal flags handling */
target_ulong cc_src, cc_src2;
target_ulong cc_dst;
target_ulong t0, t1; /* temporaries live across basic blocks */
target_ulong cond; /* conditional branch result (XXX: save it in a
temporary register when possible) */
uint32_t psr; /* processor state register */
target_ulong fsr; /* FPU state register */
float32 fpr[TARGET_FPREGS]; /* floating point registers */
uint32_t cwp; /* index of current register window (extracted
from PSR) */
uint32_t wim; /* window invalid mask */
target_ulong tbr; /* trap base register */
int psrs; /* supervisor mode (extracted from PSR) */
int psrps; /* previous supervisor mode */
int psret; /* enable traps */
uint32_t psrpil; /* interrupt blocking level */
uint32_t pil_in; /* incoming interrupt level bitmap */
int psref; /* enable fpu */
target_ulong version;
int interrupt_index;
uint32_t nwindows;
/* NOTE: we allow 8 more registers to handle wrapping */
target_ulong regbase[MAX_NWINDOWS * 16 + 8];
CPU_COMMON
/* MMU regs */
#if defined(TARGET_SPARC64)
uint64_t lsu;
#define DMMU_E 0x8
#define IMMU_E 0x4
uint64_t immuregs[16];
uint64_t dmmuregs[16];
uint64_t itlb_tag[64];
uint64_t itlb_tte[64];
uint64_t dtlb_tag[64];
uint64_t dtlb_tte[64];
uint32_t mmu_version;
#else
uint32_t mmuregs[32];
uint64_t mxccdata[4];
uint64_t mxccregs[8];
uint64_t prom_addr;
#endif
/* temporary float registers */
float64 dt0, dt1;
float128 qt0, qt1;
float_status fp_status;
#if defined(TARGET_SPARC64)
#define MAXTL_MAX 8
#define MAXTL_MASK (MAXTL_MAX - 1)
trap_state *tsptr;
trap_state ts[MAXTL_MAX];
uint32_t xcc; /* Extended integer condition codes */
uint32_t asi;
uint32_t pstate;
uint32_t tl;
uint32_t maxtl;
uint32_t cansave, canrestore, otherwin, wstate, cleanwin;
uint64_t agregs[8]; /* alternate general registers */
uint64_t bgregs[8]; /* backup for normal global registers */
uint64_t igregs[8]; /* interrupt general registers */
uint64_t mgregs[8]; /* mmu general registers */
uint64_t fprs;
uint64_t tick_cmpr, stick_cmpr;
void *tick, *stick;
uint64_t gsr;
uint32_t gl; // UA2005
/* UA 2005 hyperprivileged registers */
uint64_t hpstate, htstate[MAXTL_MAX], hintp, htba, hver, hstick_cmpr, ssr;
void *hstick; // UA 2005
uint32_t softint;
#define SOFTINT_TIMER 1
#endif
sparc_def_t *def;
} CPUSPARCState;
/* helper.c */
CPUSPARCState *cpu_sparc_init(const char *cpu_model);
void cpu_sparc_set_id(CPUSPARCState *env, unsigned int cpu);
void sparc_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt,
...));
void cpu_lock(void);
void cpu_unlock(void);
int cpu_sparc_handle_mmu_fault(CPUSPARCState *env1, target_ulong address, int rw,
int mmu_idx, int is_softmmu);
target_ulong mmu_probe(CPUSPARCState *env, target_ulong address, int mmulev);
void dump_mmu(CPUSPARCState *env);
/* translate.c */
void gen_intermediate_code_init(CPUSPARCState *env);
/* cpu-exec.c */
int cpu_sparc_exec(CPUSPARCState *s);
#define GET_PSR(env) (env->version | (env->psr & PSR_ICC) | \
(env->psref? PSR_EF : 0) | \
(env->psrpil << 8) | \
(env->psrs? PSR_S : 0) | \
(env->psrps? PSR_PS : 0) | \
(env->psret? PSR_ET : 0) | env->cwp)
#ifndef NO_CPU_IO_DEFS
static inline void memcpy32(target_ulong *dst, const target_ulong *src)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
dst[4] = src[4];
dst[5] = src[5];
dst[6] = src[6];
dst[7] = src[7];
}
static inline void cpu_set_cwp(CPUSPARCState *env1, int new_cwp)
{
/* put the modified wrap registers at their proper location */
if (env1->cwp == env1->nwindows - 1)
memcpy32(env1->regbase, env1->regbase + env1->nwindows * 16);
env1->cwp = new_cwp;
/* put the wrap registers at their temporary location */
if (new_cwp == env1->nwindows - 1)
memcpy32(env1->regbase + env1->nwindows * 16, env1->regbase);
env1->regwptr = env1->regbase + (new_cwp * 16);
}
static inline int cpu_cwp_inc(CPUSPARCState *env1, int cwp)
{
if (unlikely(cwp >= env1->nwindows))
cwp -= env1->nwindows;
return cwp;
}
static inline int cpu_cwp_dec(CPUSPARCState *env1, int cwp)
{
if (unlikely(cwp < 0))
cwp += env1->nwindows;
return cwp;
}
#endif
#define PUT_PSR(env, val) do { int _tmp = val; \
env->psr = _tmp & PSR_ICC; \
env->psref = (_tmp & PSR_EF)? 1 : 0; \
env->psrpil = (_tmp & PSR_PIL) >> 8; \
env->psrs = (_tmp & PSR_S)? 1 : 0; \
env->psrps = (_tmp & PSR_PS)? 1 : 0; \
env->psret = (_tmp & PSR_ET)? 1 : 0; \
cpu_set_cwp(env, _tmp & PSR_CWP); \
} while (0)
#ifdef TARGET_SPARC64
#define GET_CCR(env) (((env->xcc >> 20) << 4) | ((env->psr & PSR_ICC) >> 20))
#define PUT_CCR(env, val) do { int _tmp = val; \
env->xcc = (_tmp >> 4) << 20; \
env->psr = (_tmp & 0xf) << 20; \
} while (0)
#define GET_CWP64(env) (env->nwindows - 1 - (env)->cwp)
#ifndef NO_CPU_IO_DEFS
static inline void PUT_CWP64(CPUSPARCState *env1, int cwp)
{
if (unlikely(cwp >= env1->nwindows || cwp < 0))
cwp = 0;
cpu_set_cwp(env1, env1->nwindows - 1 - cwp);
}
#endif
#endif
/* cpu-exec.c */
void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
int is_asi, int size);
int cpu_sparc_signal_handler(int host_signum, void *pinfo, void *puc);
#define CPUState CPUSPARCState
#define cpu_init cpu_sparc_init
#define cpu_exec cpu_sparc_exec
#define cpu_gen_code cpu_sparc_gen_code
#define cpu_signal_handler cpu_sparc_signal_handler
#define cpu_list sparc_cpu_list
#define CPU_SAVE_VERSION 5
/* MMU modes definitions */
#define MMU_MODE0_SUFFIX _user
#define MMU_MODE1_SUFFIX _kernel
#ifdef TARGET_SPARC64
#define MMU_MODE2_SUFFIX _hypv
#endif
#define MMU_USER_IDX 0
#define MMU_KERNEL_IDX 1
#define MMU_HYPV_IDX 2
static inline int cpu_mmu_index(CPUState *env1)
{
#if defined(CONFIG_USER_ONLY)
return MMU_USER_IDX;
#elif !defined(TARGET_SPARC64)
return env1->psrs;
#else
if (!env1->psrs)
return MMU_USER_IDX;
else if ((env1->hpstate & HS_PRIV) == 0)
return MMU_KERNEL_IDX;
else
return MMU_HYPV_IDX;
#endif
}
static inline int cpu_fpu_enabled(CPUState *env1)
{
#if defined(CONFIG_USER_ONLY)
return 1;
#elif !defined(TARGET_SPARC64)
return env1->psref;
#else
return ((env1->pstate & PS_PEF) != 0) && ((env1->fprs & FPRS_FEF) != 0);
#endif
}
#if defined(CONFIG_USER_ONLY)
static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
{
if (newsp)
env->regwptr[22] = newsp;
env->regwptr[0] = 0;
/* FIXME: Do we also need to clear CF? */
/* XXXXX */
printf ("HELPME: %s:%d\n", __FILE__, __LINE__);
}
#endif
#include "cpu-all.h"
#include "exec-all.h"
/* sum4m.c, sun4u.c */
void cpu_check_irqs(CPUSPARCState *env);
#ifdef TARGET_SPARC64
/* sun4u.c */
void cpu_tick_set_count(void *opaque, uint64_t count);
uint64_t cpu_tick_get_count(void *opaque);
void cpu_tick_set_limit(void *opaque, uint64_t limit);
#endif
static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
{
env->pc = tb->pc;
env->npc = tb->cs_base;
}
static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
target_ulong *cs_base, int *flags)
{
*pc = env->pc;
*cs_base = env->npc;
#ifdef TARGET_SPARC64
// AM . Combined FPU enable bits . PRIV . DMMU enabled . IMMU enabled
*flags = ((env->pstate & PS_AM) << 2)
| (((env->pstate & PS_PEF) >> 1) | ((env->fprs & FPRS_FEF) << 2))
| (env->pstate & PS_PRIV) | ((env->lsu & (DMMU_E | IMMU_E)) >> 2);
#else
// FPU enable . Supervisor
*flags = (env->psref << 4) | env->psrs;
#endif
}
#endif
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