diff options
Diffstat (limited to 'target/m68k/cpu.h')
| -rw-r--r-- | target/m68k/cpu.h | 43 |
1 files changed, 39 insertions, 4 deletions
diff --git a/target/m68k/cpu.h b/target/m68k/cpu.h index beb8ebc88b..38a7e11b92 100644 --- a/target/m68k/cpu.h +++ b/target/m68k/cpu.h @@ -171,6 +171,7 @@ int cpu_m68k_signal_handler(int host_signum, void *pinfo, void *puc); uint32_t cpu_m68k_get_ccr(CPUM68KState *env); void cpu_m68k_set_ccr(CPUM68KState *env, uint32_t); +void cpu_m68k_set_fpcr(CPUM68KState *env, uint32_t val); /* Instead of computing the condition codes after each m68k instruction, @@ -215,6 +216,43 @@ typedef enum { #define M68K_SSP 0 #define M68K_USP 1 +#define M68K_FPIAR_SHIFT 0 +#define M68K_FPIAR (1 << M68K_FPIAR_SHIFT) +#define M68K_FPSR_SHIFT 1 +#define M68K_FPSR (1 << M68K_FPSR_SHIFT) +#define M68K_FPCR_SHIFT 2 +#define M68K_FPCR (1 << M68K_FPCR_SHIFT) + +/* Floating-Point Status Register */ + +/* Condition Code */ +#define FPSR_CC_MASK 0x0f000000 +#define FPSR_CC_A 0x01000000 /* Not-A-Number */ +#define FPSR_CC_I 0x02000000 /* Infinity */ +#define FPSR_CC_Z 0x04000000 /* Zero */ +#define FPSR_CC_N 0x08000000 /* Negative */ + +/* Quotient */ + +#define FPSR_QT_MASK 0x00ff0000 + +/* Floating-Point Control Register */ +/* Rounding mode */ +#define FPCR_RND_MASK 0x0030 +#define FPCR_RND_N 0x0000 +#define FPCR_RND_Z 0x0010 +#define FPCR_RND_M 0x0020 +#define FPCR_RND_P 0x0030 + +/* Rounding precision */ +#define FPCR_PREC_MASK 0x00c0 +#define FPCR_PREC_X 0x0000 +#define FPCR_PREC_S 0x0040 +#define FPCR_PREC_D 0x0080 +#define FPCR_PREC_U 0x00c0 + +#define FPCR_EXCP_MASK 0xff00 + /* CACR fields are implementation defined, but some bits are common. */ #define M68K_CACR_EUSP 0x10 @@ -231,8 +269,6 @@ typedef enum { void m68k_set_irq_level(M68kCPU *cpu, int level, uint8_t vector); void m68k_switch_sp(CPUM68KState *env); -#define M68K_FPCR_PREC (1 << 6) - void do_m68k_semihosting(CPUM68KState *env, int nr); /* There are 4 ColdFire core ISA revisions: A, A+, B and C. @@ -310,8 +346,7 @@ static inline void cpu_get_tb_cpu_state(CPUM68KState *env, target_ulong *pc, { *pc = env->pc; *cs_base = 0; - *flags = (env->fpcr & M68K_FPCR_PREC) /* Bit 6 */ - | (env->sr & SR_S) /* Bit 13 */ + *flags = (env->sr & SR_S) /* Bit 13 */ | ((env->macsr >> 4) & 0xf); /* Bits 0-3 */ } |