191 lines
6.0 KiB
C
191 lines
6.0 KiB
C
/*
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* UniCore32 virtual CPU header
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*
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* Copyright (C) 2010-2011 GUAN Xue-tao
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __CPU_UC32_H__
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#define __CPU_UC32_H__
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#define TARGET_LONG_BITS 32
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#define TARGET_PAGE_BITS 12
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#define TARGET_PHYS_ADDR_SPACE_BITS 32
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#define TARGET_VIRT_ADDR_SPACE_BITS 32
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#define ELF_MACHINE EM_UNICORE32
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#define CPUState struct CPUState_UniCore32
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#include "config.h"
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#include "qemu-common.h"
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#include "cpu-defs.h"
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#include "softfloat.h"
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#define NB_MMU_MODES 2
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typedef struct CPUState_UniCore32 {
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/* Regs for current mode. */
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uint32_t regs[32];
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/* Frequently accessed ASR bits are stored separately for efficiently.
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This contains all the other bits. Use asr_{read,write} to access
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the whole ASR. */
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uint32_t uncached_asr;
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uint32_t bsr;
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/* Banked registers. */
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uint32_t banked_bsr[6];
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uint32_t banked_r29[6];
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uint32_t banked_r30[6];
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/* asr flag cache for faster execution */
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uint32_t CF; /* 0 or 1 */
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uint32_t VF; /* V is the bit 31. All other bits are undefined */
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uint32_t NF; /* N is bit 31. All other bits are undefined. */
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uint32_t ZF; /* Z set if zero. */
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/* System control coprocessor (cp0) */
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struct {
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uint32_t c0_cpuid;
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uint32_t c0_cachetype;
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uint32_t c1_sys; /* System control register. */
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uint32_t c2_base; /* MMU translation table base. */
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uint32_t c3_faultstatus; /* Fault status registers. */
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uint32_t c4_faultaddr; /* Fault address registers. */
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uint32_t c5_cacheop; /* Cache operation registers. */
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uint32_t c6_tlbop; /* TLB operation registers. */
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} cp0;
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/* UniCore-F64 coprocessor state. */
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struct {
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float64 regs[16];
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uint32_t xregs[32];
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float_status fp_status;
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} ucf64;
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CPU_COMMON
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/* Internal CPU feature flags. */
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uint32_t features;
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} CPUState_UniCore32;
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#define ASR_M (0x1f)
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#define ASR_MODE_USER (0x10)
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#define ASR_MODE_INTR (0x12)
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#define ASR_MODE_PRIV (0x13)
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#define ASR_MODE_TRAP (0x17)
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#define ASR_MODE_EXTN (0x1b)
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#define ASR_MODE_SUSR (0x1f)
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#define ASR_I (1 << 7)
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#define ASR_V (1 << 28)
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#define ASR_C (1 << 29)
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#define ASR_Z (1 << 30)
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#define ASR_N (1 << 31)
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#define ASR_NZCV (ASR_N | ASR_Z | ASR_C | ASR_V)
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#define ASR_RESERVED (~(ASR_M | ASR_I | ASR_NZCV))
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#define UC32_EXCP_PRIV (ASR_MODE_PRIV)
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#define UC32_EXCP_TRAP (ASR_MODE_TRAP)
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/* Return the current ASR value. */
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target_ulong cpu_asr_read(CPUState *env1);
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/* Set the ASR. Note that some bits of mask must be all-set or all-clear. */
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void cpu_asr_write(CPUState *env1, target_ulong val, target_ulong mask);
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/* UniCore-F64 system registers. */
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#define UC32_UCF64_FPSCR (31)
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#define UCF64_FPSCR_MASK (0x27ffffff)
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#define UCF64_FPSCR_RND_MASK (0x7)
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#define UCF64_FPSCR_RND(r) (((r) >> 0) & UCF64_FPSCR_RND_MASK)
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#define UCF64_FPSCR_TRAPEN_MASK (0x7f)
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#define UCF64_FPSCR_TRAPEN(r) (((r) >> 10) & UCF64_FPSCR_TRAPEN_MASK)
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#define UCF64_FPSCR_FLAG_MASK (0x3ff)
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#define UCF64_FPSCR_FLAG(r) (((r) >> 17) & UCF64_FPSCR_FLAG_MASK)
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#define UCF64_FPSCR_FLAG_ZERO (1 << 17)
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#define UCF64_FPSCR_FLAG_INFINITY (1 << 18)
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#define UCF64_FPSCR_FLAG_INVALID (1 << 19)
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#define UCF64_FPSCR_FLAG_UNDERFLOW (1 << 20)
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#define UCF64_FPSCR_FLAG_OVERFLOW (1 << 21)
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#define UCF64_FPSCR_FLAG_INEXACT (1 << 22)
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#define UCF64_FPSCR_FLAG_HUGEINT (1 << 23)
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#define UCF64_FPSCR_FLAG_DENORMAL (1 << 24)
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#define UCF64_FPSCR_FLAG_UNIMP (1 << 25)
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#define UCF64_FPSCR_FLAG_DIVZERO (1 << 26)
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#define UC32_HWCAP_CMOV 4 /* 1 << 2 */
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#define UC32_HWCAP_UCF64 8 /* 1 << 3 */
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#define UC32_CPUID(env) (env->cp0.c0_cpuid)
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#define UC32_CPUID_UCV2 0x40010863
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#define UC32_CPUID_ANY 0xffffffff
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#define cpu_init uc32_cpu_init
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#define cpu_exec uc32_cpu_exec
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#define cpu_signal_handler uc32_cpu_signal_handler
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#define cpu_handle_mmu_fault uc32_cpu_handle_mmu_fault
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CPUState *uc32_cpu_init(const char *cpu_model);
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int uc32_cpu_exec(CPUState *s);
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int uc32_cpu_signal_handler(int host_signum, void *pinfo, void *puc);
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int uc32_cpu_handle_mmu_fault(CPUState *env, target_ulong address, int rw,
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int mmu_idx);
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#define CPU_SAVE_VERSION 2
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/* MMU modes definitions */
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#define MMU_MODE0_SUFFIX _kernel
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#define MMU_MODE1_SUFFIX _user
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#define MMU_USER_IDX 1
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static inline int cpu_mmu_index(CPUState *env)
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{
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return (env->uncached_asr & ASR_M) == ASR_MODE_USER ? 1 : 0;
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}
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static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
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{
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if (newsp) {
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env->regs[29] = newsp;
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}
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env->regs[0] = 0;
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}
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static inline void cpu_set_tls(CPUState *env, target_ulong newtls)
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{
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env->regs[16] = newtls;
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}
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#include "cpu-all.h"
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#include "exec-all.h"
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static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
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{
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env->regs[31] = tb->pc;
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}
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static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
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target_ulong *cs_base, int *flags)
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{
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*pc = env->regs[31];
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*cs_base = 0;
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*flags = 0;
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if ((env->uncached_asr & ASR_M) != ASR_MODE_USER) {
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*flags |= (1 << 6);
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}
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}
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void uc32_translate_init(void);
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void do_interrupt(CPUState *);
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void switch_mode(CPUState_UniCore32 *, int);
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static inline bool cpu_has_work(CPUState *env)
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{
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return env->interrupt_request &
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(CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB);
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}
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#endif /* __CPU_UC32_H__ */
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