105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
#ifndef E2K_CPU_H
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#define E2K_CPU_H
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#include "qemu/bswap.h"
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#include "cpu-qom.h"
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#include "exec/cpu-defs.h"
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void e2k_tcg_initialize(void);
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#define MMU_USER_IDX 1
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#define CPU_RESOLVING_TYPE TYPE_E2K_CPU
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#define WREGS_SIZE 192
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// size of regular reg in bytes
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#define REG_SIZE (sizeof(target_ulong))
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typedef enum {
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E2K_EXCP_UNIMPL = 0x01,
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E2K_EXCP_SYSCALL = 0x02,
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} Exception;
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struct e2k_def_t {
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const char *name;
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uint32_t isa_version;
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};
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typedef struct CPUArchState {
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/* register file */
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target_ulong gregs[32]; // global regs
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target_ulong wregs[WREGS_SIZE]; // window regs
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target_ulong *win_ptr;
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uint64_t pregs;
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uint32_t wbs; // Real window regs offset, in bundle it comes divided by 2
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uint32_t wsz; // Real window regs size, in bundle it comes divided by 2
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uint32_t nfx; // TODO
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uint32_t dbl; // TODO
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uint32_t rbs; // Real based regs offset, in bundle it comes divided by 2
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uint32_t rsz; // Real based regs size, in bundle it comes divided by 2 minus 2
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uint32_t rcur; // Real based regs current index, in bundle it comes divided by 2
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uint32_t psz; // pred regs window size
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uint32_t syscall_wbs;
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uint64_t usd_lo;
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uint64_t usd_hi;
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/* control registers */
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target_ulong ctprs[3]; // Control Transfer Preparation Register (CTPR)
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/* special registers */
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target_ulong ip; /* instruction address, next instruction address */
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uint32_t pfpfr; // Packed Floating Point Flag Register (PFPFR)
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uint32_t fpcr; // Floating point control register (FPCR)
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uint32_t fpsr; // Floating point state register (FPSR)
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int interrupt_index;
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/* Fields up to this point are cleared by a CPU reset */
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struct {} end_reset_fields;
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uint32_t version;
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struct e2k_def_t def;
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} CPUE2KState;
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/**
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* E2KCPU:
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* @env: #CPUE2KState
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*
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* An Elbrus CPU.
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*/
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struct ArchCPU {
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/*< private >*/
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CPUState parent_obj;
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/*< public >*/
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CPUNegativeOffsetState neg;
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CPUE2KState env;
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};
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static inline void cpu_get_tb_cpu_state(CPUE2KState *env, target_ulong *pc,
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target_ulong *cs_base, uint32_t *pflags)
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{
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*pc = env->ip;
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*cs_base = 0;
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*pflags = MMU_USER_IDX;
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}
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static inline int cpu_mmu_index(CPUE2KState *env, bool ifetch)
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{
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#ifdef CONFIG_USER_ONLY
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return MMU_USER_IDX;
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#else
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#error softmmu is not supported on E2K
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#endif
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}
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int e2k_cpu_signal_handler(int host_signum, void *pinfo, void *puc);
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#define cpu_signal_handler e2k_cpu_signal_handler
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#include "exec/cpu-all.h"
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#endif
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