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Diffstat (limited to 'target/hppa/cpu.h')
| -rw-r--r-- | target/hppa/cpu.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/target/hppa/cpu.h b/target/hppa/cpu.h new file mode 100644 index 0000000000..4cf4ac65e3 --- /dev/null +++ b/target/hppa/cpu.h @@ -0,0 +1,144 @@ +/* + * PA-RISC emulation cpu definitions for qemu. + * + * Copyright (c) 2016 Richard Henderson <rth@twiddle.net> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef HPPA_CPU_H +#define HPPA_CPU_H + +#include "qemu-common.h" +#include "cpu-qom.h" + +/* We only support hppa-linux-user at present, so 32-bit only. */ +#define TARGET_LONG_BITS 32 +#define TARGET_PHYS_ADDR_SPACE_BITS 32 +#define TARGET_VIRT_ADDR_SPACE_BITS 32 + +#define CPUArchState struct CPUHPPAState + +#include "exec/cpu-defs.h" +#include "fpu/softfloat.h" + +#define TARGET_PAGE_BITS 12 + +#define ALIGNED_ONLY +#define NB_MMU_MODES 1 +#define MMU_USER_IDX 0 +#define TARGET_INSN_START_EXTRA_WORDS 1 + +#define EXCP_SYSCALL 1 +#define EXCP_SYSCALL_LWS 2 +#define EXCP_SIGSEGV 3 +#define EXCP_SIGILL 4 +#define EXCP_SIGFPE 5 + +typedef struct CPUHPPAState CPUHPPAState; + +struct CPUHPPAState { + target_ulong gr[32]; + uint64_t fr[32]; + + target_ulong sar; + target_ulong cr26; + target_ulong cr27; + + target_ulong psw_n; /* boolean */ + target_long psw_v; /* in most significant bit */ + + /* Splitting the carry-borrow field into the MSB and "the rest", allows + * for "the rest" to be deleted when it is unused, but the MSB is in use. + * In addition, it's easier to compute carry-in for bit B+1 than it is to + * compute carry-out for bit B (3 vs 4 insns for addition, assuming the + * host has the appropriate add-with-carry insn to compute the msb). + * Therefore the carry bits are stored as: cb_msb : cb & 0x11111110. + */ + target_ulong psw_cb; /* in least significant bit of next nibble */ + target_ulong psw_cb_msb; /* boolean */ + + target_ulong iaoq_f; /* front */ + target_ulong iaoq_b; /* back, aka next instruction */ + + target_ulong ior; /* interrupt offset register */ + + uint32_t fr0_shadow; /* flags, c, ca/cq, rm, d, enables */ + float_status fp_status; + + /* Those resources are used only in QEMU core */ + CPU_COMMON +}; + +/** + * HPPACPU: + * @env: #CPUHPPAState + * + * An HPPA CPU. + */ +struct HPPACPU { + /*< private >*/ + CPUState parent_obj; + /*< public >*/ + + CPUHPPAState env; +}; + +static inline HPPACPU *hppa_env_get_cpu(CPUHPPAState *env) +{ + return container_of(env, HPPACPU, env); +} + +#define ENV_GET_CPU(e) CPU(hppa_env_get_cpu(e)) +#define ENV_OFFSET offsetof(HPPACPU, env) + +#include "exec/cpu-all.h" + +static inline int cpu_mmu_index(CPUHPPAState *env, bool ifetch) +{ + return 0; +} + +void hppa_translate_init(void); + +HPPACPU *cpu_hppa_init(const char *cpu_model); + +#define cpu_init(cpu_model) CPU(cpu_hppa_init(cpu_model)) + +void hppa_cpu_list(FILE *f, fprintf_function cpu_fprintf); + +static inline void cpu_get_tb_cpu_state(CPUHPPAState *env, target_ulong *pc, + target_ulong *cs_base, + uint32_t *pflags) +{ + *pc = env->iaoq_f; + *cs_base = env->iaoq_b; + *pflags = env->psw_n; +} + +target_ulong cpu_hppa_get_psw(CPUHPPAState *env); +void cpu_hppa_put_psw(CPUHPPAState *env, target_ulong); +void cpu_hppa_loaded_fr0(CPUHPPAState *env); + +#define cpu_signal_handler cpu_hppa_signal_handler + +int cpu_hppa_signal_handler(int host_signum, void *pinfo, void *puc); +int hppa_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw, int midx); +int hppa_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg); +int hppa_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); +void hppa_cpu_do_interrupt(CPUState *cpu); +bool hppa_cpu_exec_interrupt(CPUState *cpu, int int_req); +void hppa_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function, int); + +#endif /* HPPA_CPU_H */ |