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SPARC fixes: corrected PC/NPC logic (now slower but can be optimized a lot) - fixed flags computations - added register window exceptions support - fixed mul and div - added mulscc - fixed immediate field decoding

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@484 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-01-04 15:01:44 +00:00
parent fb0eaffc6d
commit cf495bcf9f
4 changed files with 1206 additions and 907 deletions
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45
target-sparc/cpu.h
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@ -7,29 +7,42 @@
/*#define EXCP_INTERRUPT 0x100*/
/* trap definitions */
#define TT_ILL_INSN 0x02
#define TT_WIN_OVF 0x05
#define TT_WIN_UNF 0x06
#define TT_DIV_ZERO 0x2a
#define TT_TRAP 0x80
#define PSR_NEG (1<<23)
#define PSR_ZERO (1<<22)
#define PSR_OVF (1<<21)
#define PSR_CARRY (1<<20)
#define NWINDOWS 32
typedef struct CPUSPARCState {
uint32_t gregs[8]; /* general registers */
uint32_t *regwptr; /* pointer to current register window */
double *regfptr; /* floating point registers */
uint32_t pc; /* program counter */
uint32_t npc; /* next program counter */
uint32_t sp; /* stack pointer */
uint32_t y; /* multiply/divide register */
uint32_t psr; /* processor state register */
uint32_t T2;
jmp_buf jmp_env;
int user_mode_only;
int exception_index;
int interrupt_index;
int interrupt_request;
struct TranslationBlock *current_tb;
void *opaque;
uint32_t gregs[8]; /* general registers */
uint32_t *regwptr; /* pointer to current register window */
double *regfptr; /* floating point registers */
uint32_t pc; /* program counter */
uint32_t npc; /* next program counter */
uint32_t sp; /* stack pointer */
uint32_t y; /* multiply/divide register */
uint32_t psr; /* processor state register */
uint32_t T2;
uint32_t cwp; /* index of current register window (extracted
from PSR) */
uint32_t wim; /* window invalid mask */
jmp_buf jmp_env;
int user_mode_only;
int exception_index;
int interrupt_index;
int interrupt_request;
struct TranslationBlock *current_tb;
void *opaque;
/* NOTE: we allow 8 more registers to handle wrapping */
uint32_t regbase[NWINDOWS * 16 + 8];
} CPUSPARCState;
CPUSPARCState *cpu_sparc_init(void);