/*
* m68k virtual CPU header
- *
+ *
* Copyright (c) 2005-2007 CodeSourcery
* Written by Paul Brook
*
#define EXCP_ICE 13
#define EXCP_RTE 0x100
+#define EXCP_HALT_INSN 0x101
+
+#define NB_MMU_MODES 2
typedef struct CPUM68KState {
uint32_t dregs[8];
uint32_t pc;
uint32_t sr;
+ /* SSP and USP. The current_sp is stored in aregs[7], the other here. */
+ int current_sp;
+ uint32_t sp[2];
+
/* Condition flags. */
uint32_t cc_op;
uint32_t cc_dest;
uint32_t fpsr;
float_status fp_status;
+ uint64_t mactmp;
+ /* EMAC Hardware deals with 48-bit values composed of one 32-bit and
+ two 8-bit parts. We store a single 64-bit value and
+ rearrange/extend this when changing modes. */
+ uint64_t macc[4];
+ uint32_t macsr;
+ uint32_t mac_mask;
+
/* Temporary storage for DIV helpers. */
uint32_t div1;
uint32_t div2;
-
+
/* MMU status. */
struct {
uint32_t ar;
uint32_t vbr;
uint32_t mbar;
uint32_t rambar0;
+ uint32_t cacr;
/* ??? remove this. */
uint32_t t1;
- /* exception/interrupt handling */
- jmp_buf jmp_env;
- int exception_index;
- int interrupt_request;
- int user_mode_only;
- int halted;
-
int pending_vector;
int pending_level;
uint32_t qregs[MAX_QREGS];
CPU_COMMON
+
+ uint32_t features;
} CPUM68KState;
-CPUM68KState *cpu_m68k_init(void);
+void m68k_tcg_init(void);
+CPUM68KState *cpu_m68k_init(const char *cpu_model);
int cpu_m68k_exec(CPUM68KState *s);
void cpu_m68k_close(CPUM68KState *s);
void do_interrupt(int is_hw);
/* you can call this signal handler from your SIGBUS and SIGSEGV
signal handlers to inform the virtual CPU of exceptions. non zero
is returned if the signal was handled by the virtual CPU. */
-int cpu_m68k_signal_handler(int host_signum, void *pinfo,
+int cpu_m68k_signal_handler(int host_signum, void *pinfo,
void *puc);
void cpu_m68k_flush_flags(CPUM68KState *, int);
CC_OP_CMPW, /* CC_DEST = result, CC_SRC = source */
CC_OP_ADDX, /* CC_DEST = result, CC_SRC = source */
CC_OP_SUBX, /* CC_DEST = result, CC_SRC = source */
- CC_OP_SHL, /* CC_DEST = source, CC_SRC = shift */
- CC_OP_SHR, /* CC_DEST = source, CC_SRC = shift */
- CC_OP_SAR, /* CC_DEST = source, CC_SRC = shift */
+ CC_OP_SHIFT, /* CC_DEST = result, CC_SRC = carry */
};
#define CCF_C 0x01
#define SR_S 0x2000
#define SR_T 0x8000
-typedef struct m68k_def_t m68k_def_t;
+#define M68K_SSP 0
+#define M68K_USP 1
+
+/* CACR fields are implementation defined, but some bits are common. */
+#define M68K_CACR_EUSP 0x10
-int cpu_m68k_set_model(CPUM68KState *env, const char * name);
+#define MACSR_PAV0 0x100
+#define MACSR_OMC 0x080
+#define MACSR_SU 0x040
+#define MACSR_FI 0x020
+#define MACSR_RT 0x010
+#define MACSR_N 0x008
+#define MACSR_Z 0x004
+#define MACSR_V 0x002
+#define MACSR_EV 0x001
void m68k_set_irq_level(CPUM68KState *env, int level, uint8_t vector);
+void m68k_set_macsr(CPUM68KState *env, uint32_t val);
+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.
+ Each feature covers the subset of instructions common to the
+ ISA revisions mentioned. */
+
+enum m68k_features {
+ M68K_FEATURE_CF_ISA_A,
+ M68K_FEATURE_CF_ISA_B, /* (ISA B or C). */
+ M68K_FEATURE_CF_ISA_APLUSC, /* BIT/BITREV, FF1, STRLDSR (ISA A+ or C). */
+ M68K_FEATURE_BRAL, /* Long unconditional branch. (ISA A+ or B). */
+ M68K_FEATURE_CF_FPU,
+ M68K_FEATURE_CF_MAC,
+ M68K_FEATURE_CF_EMAC,
+ M68K_FEATURE_CF_EMAC_B, /* Revision B EMAC (dual accumulate). */
+ M68K_FEATURE_USP, /* User Stack Pointer. (ISA A+, B or C). */
+ M68K_FEATURE_EXT_FULL, /* 68020+ full extension word. */
+ M68K_FEATURE_WORD_INDEX /* word sized address index registers. */
+};
+
+static inline int m68k_feature(CPUM68KState *env, int feature)
+{
+ return (env->features & (1u << feature)) != 0;
+}
+
+void register_m68k_insns (CPUM68KState *env);
+
#ifdef CONFIG_USER_ONLY
/* Linux uses 8k pages. */
#define TARGET_PAGE_BITS 13
#else
-/* Smallest TLB entry size is 1k. */
+/* Smallest TLB entry size is 1k. */
#define TARGET_PAGE_BITS 10
#endif
+
+#define CPUState CPUM68KState
+#define cpu_init cpu_m68k_init
+#define cpu_exec cpu_m68k_exec
+#define cpu_gen_code cpu_m68k_gen_code
+#define cpu_signal_handler cpu_m68k_signal_handler
+
+/* MMU modes definitions */
+#define MMU_MODE0_SUFFIX _kernel
+#define MMU_MODE1_SUFFIX _user
+#define MMU_USER_IDX 1
+static inline int cpu_mmu_index (CPUState *env)
+{
+ return (env->sr & SR_S) == 0 ? 1 : 0;
+}
+
+#if defined(CONFIG_USER_ONLY)
+static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
+{
+ if (newsp)
+ env->aregs[7] = newsp;
+ env->dregs[0] = 0;
+}
+#endif
+
+#define CPU_PC_FROM_TB(env, tb) env->pc = tb->pc
+
#include "cpu-all.h"
#endif
projects / qemu / blobdiff