target-xtensa/cpu.h

   1 /*
   2  * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are met:
   7  *     * Redistributions of source code must retain the above copyright
   8  *       notice, this list of conditions and the following disclaimer.
   9  *     * Redistributions in binary form must reproduce the above copyright
  10  *       notice, this list of conditions and the following disclaimer in the
  11  *       documentation and/or other materials provided with the distribution.
  12  *     * Neither the name of the Open Source and Linux Lab nor the
  13  *       names of its contributors may be used to endorse or promote products
  14  *       derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  20  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  21  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  25  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #ifndef CPU_XTENSA_H
  29 #define CPU_XTENSA_H
  30
  31 #define TARGET_LONG_BITS 32
  32 #define ELF_MACHINE EM_XTENSA
  33
  34 #define CPUState struct CPUXtensaState
  35
  36 #include "config.h"
  37 #include "qemu-common.h"
  38 #include "cpu-defs.h"
  39
  40 #define TARGET_HAS_ICE 1
  41
  42 #define NB_MMU_MODES 4
  43
  44 #define TARGET_PHYS_ADDR_SPACE_BITS 32
  45 #define TARGET_VIRT_ADDR_SPACE_BITS 32
  46 #define TARGET_PAGE_BITS 12
  47
  48 enum {
  49     /* Additional instructions */
  50     XTENSA_OPTION_CODE_DENSITY,
  51     XTENSA_OPTION_LOOP,
  52     XTENSA_OPTION_EXTENDED_L32R,
  53     XTENSA_OPTION_16_BIT_IMUL,
  54     XTENSA_OPTION_32_BIT_IMUL,
  55     XTENSA_OPTION_32_BIT_IDIV,
  56     XTENSA_OPTION_MAC16,
  57     XTENSA_OPTION_MISC_OP,
  58     XTENSA_OPTION_COPROCESSOR,
  59     XTENSA_OPTION_BOOLEAN,
  60     XTENSA_OPTION_FP_COPROCESSOR,
  61     XTENSA_OPTION_MP_SYNCHRO,
  62     XTENSA_OPTION_CONDITIONAL_STORE,
  63
  64     /* Interrupts and exceptions */
  65     XTENSA_OPTION_EXCEPTION,
  66     XTENSA_OPTION_RELOCATABLE_VECTOR,
  67     XTENSA_OPTION_UNALIGNED_EXCEPTION,
  68     XTENSA_OPTION_INTERRUPT,
  69     XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT,
  70     XTENSA_OPTION_TIMER_INTERRUPT,
  71
  72     /* Local memory */
  73     XTENSA_OPTION_ICACHE,
  74     XTENSA_OPTION_ICACHE_TEST,
  75     XTENSA_OPTION_ICACHE_INDEX_LOCK,
  76     XTENSA_OPTION_DCACHE,
  77     XTENSA_OPTION_DCACHE_TEST,
  78     XTENSA_OPTION_DCACHE_INDEX_LOCK,
  79     XTENSA_OPTION_IRAM,
  80     XTENSA_OPTION_IROM,
  81     XTENSA_OPTION_DRAM,
  82     XTENSA_OPTION_DROM,
  83     XTENSA_OPTION_XLMI,
  84     XTENSA_OPTION_HW_ALIGNMENT,
  85     XTENSA_OPTION_MEMORY_ECC_PARITY,
  86
  87     /* Memory protection and translation */
  88     XTENSA_OPTION_REGION_PROTECTION,
  89     XTENSA_OPTION_REGION_TRANSLATION,
  90     XTENSA_OPTION_MMU,
  91
  92     /* Other */
  93     XTENSA_OPTION_WINDOWED_REGISTER,
  94     XTENSA_OPTION_PROCESSOR_INTERFACE,
  95     XTENSA_OPTION_MISC_SR,
  96     XTENSA_OPTION_THREAD_POINTER,
  97     XTENSA_OPTION_PROCESSOR_ID,
  98     XTENSA_OPTION_DEBUG,
  99     XTENSA_OPTION_TRACE_PORT,
 100 };
 101
 102 enum {
 103     THREADPTR = 231,
 104     FCR = 232,
 105     FSR = 233,
 106 };
 107
 108 enum {
 109     SAR = 3,
 110 };
 111
 112 typedef struct XtensaConfig {
 113     const char *name;
 114     uint64_t options;
 115 } XtensaConfig;
 116
 117 typedef struct CPUXtensaState {
 118     const XtensaConfig *config;
 119     uint32_t regs[16];
 120     uint32_t pc;
 121     uint32_t sregs[256];
 122     uint32_t uregs[256];
 123
 124     CPU_COMMON
 125 } CPUXtensaState;
 126
 127 #define cpu_init cpu_xtensa_init
 128 #define cpu_exec cpu_xtensa_exec
 129 #define cpu_gen_code cpu_xtensa_gen_code
 130 #define cpu_signal_handler cpu_xtensa_signal_handler
 131 #define cpu_list xtensa_cpu_list
 132
 133 CPUXtensaState *cpu_xtensa_init(const char *cpu_model);
 134 void xtensa_translate_init(void);
 135 int cpu_xtensa_exec(CPUXtensaState *s);
 136 void do_interrupt(CPUXtensaState *s);
 137 int cpu_xtensa_signal_handler(int host_signum, void *pinfo, void *puc);
 138 void xtensa_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 139
 140 #define XTENSA_OPTION_BIT(opt) (((uint64_t)1) << (opt))
 141
 142 static inline bool xtensa_option_enabled(const XtensaConfig *config, int opt)
 143 {
 144     return (config->options & XTENSA_OPTION_BIT(opt)) != 0;
 145 }
 146
 147 static inline int cpu_mmu_index(CPUState *env)
 148 {
 149     return 0;
 150 }
 151
 152 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
 153         target_ulong *cs_base, int *flags)
 154 {
 155     *pc = env->pc;
 156     *cs_base = 0;
 157     *flags = 0;
 158 }
 159
 160 #include "cpu-all.h"
 161 #include "exec-all.h"
 162
 163 static inline int cpu_has_work(CPUState *env)
 164 {
 165     return 1;
 166 }
 167
 168 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
 169 {
 170     env->pc = tb->pc;
 171 }
 172
 173 #endif