target/sparc/machine.c

   1 #include "qemu/osdep.h"
   2 #include "cpu.h"
   3 #include "exec/exec-all.h"
   4 #include "qemu/timer.h"
   5
   6 #include "migration/cpu.h"
   7
   8 #ifdef TARGET_SPARC64
   9 static const VMStateDescription vmstate_cpu_timer = {
  10     .name = "cpu_timer",
  11     .version_id = 1,
  12     .minimum_version_id = 1,
  13     .fields = (VMStateField[]) {
  14         VMSTATE_UINT32(frequency, CPUTimer),
  15         VMSTATE_UINT32(disabled, CPUTimer),
  16         VMSTATE_UINT64(disabled_mask, CPUTimer),
  17         VMSTATE_UINT32(npt, CPUTimer),
  18         VMSTATE_UINT64(npt_mask, CPUTimer),
  19         VMSTATE_INT64(clock_offset, CPUTimer),
  20         VMSTATE_TIMER_PTR(qtimer, CPUTimer),
  21         VMSTATE_END_OF_LIST()
  22     }
  23 };
  24
  25 #define VMSTATE_CPU_TIMER(_f, _s)                             \
  26     VMSTATE_STRUCT_POINTER(_f, _s, vmstate_cpu_timer, CPUTimer)
  27
  28 static const VMStateDescription vmstate_trap_state = {
  29     .name = "trap_state",
  30     .version_id = 1,
  31     .minimum_version_id = 1,
  32     .fields = (VMStateField[]) {
  33         VMSTATE_UINT64(tpc, trap_state),
  34         VMSTATE_UINT64(tnpc, trap_state),
  35         VMSTATE_UINT64(tstate, trap_state),
  36         VMSTATE_UINT32(tt, trap_state),
  37         VMSTATE_END_OF_LIST()
  38     }
  39 };
  40
  41 static const VMStateDescription vmstate_tlb_entry = {
  42     .name = "tlb_entry",
  43     .version_id = 1,
  44     .minimum_version_id = 1,
  45     .fields = (VMStateField[]) {
  46         VMSTATE_UINT64(tag, SparcTLBEntry),
  47         VMSTATE_UINT64(tte, SparcTLBEntry),
  48         VMSTATE_END_OF_LIST()
  49     }
  50 };
  51 #endif
  52
  53 static int get_psr(QEMUFile *f, void *opaque, size_t size,
  54                    const VMStateField *field)
  55 {
  56     SPARCCPU *cpu = opaque;
  57     CPUSPARCState *env = &cpu->env;
  58     uint32_t val = qemu_get_be32(f);
  59
  60     /* needed to ensure that the wrapping registers are correctly updated */
  61     env->cwp = 0;
  62     cpu_put_psr_raw(env, val);
  63
  64     return 0;
  65 }
  66
  67 static int put_psr(QEMUFile *f, void *opaque, size_t size,
  68                    const VMStateField *field, JSONWriter *vmdesc)
  69 {
  70     SPARCCPU *cpu = opaque;
  71     CPUSPARCState *env = &cpu->env;
  72     uint32_t val;
  73
  74     val = cpu_get_psr(env);
  75
  76     qemu_put_be32(f, val);
  77     return 0;
  78 }
  79
  80 static const VMStateInfo vmstate_psr = {
  81     .name = "psr",
  82     .get = get_psr,
  83     .put = put_psr,
  84 };
  85
  86 #ifdef TARGET_SPARC64
  87 static int get_xcc(QEMUFile *f, void *opaque, size_t size,
  88                    const VMStateField *field)
  89 {
  90     SPARCCPU *cpu = opaque;
  91     CPUSPARCState *env = &cpu->env;
  92     uint32_t val = qemu_get_be32(f);
  93
  94     /* Do not clobber icc.[NV] */
  95     env->cc_N = deposit64(env->cc_N, 32, 32, -(val & PSR_NEG));
  96     env->cc_V = deposit64(env->cc_V, 32, 32, -(val & PSR_OVF));
  97     env->xcc_Z = ~val & PSR_ZERO;
  98     env->xcc_C = (val >> PSR_CARRY_SHIFT) & 1;
  99
 100     return 0;
 101 }
 102
 103 static int put_xcc(QEMUFile *f, void *opaque, size_t size,
 104                    const VMStateField *field, JSONWriter *vmdesc)
 105 {
 106     SPARCCPU *cpu = opaque;
 107     CPUSPARCState *env = &cpu->env;
 108     uint32_t val = cpu_get_ccr(env);
 109
 110     /* Extract just xcc out of ccr and shift into legacy position. */
 111     qemu_put_be32(f, (val & 0xf0) << (20 - 4));
 112     return 0;
 113 }
 114
 115 static const VMStateInfo vmstate_xcc = {
 116     .name = "xcc",
 117     .get = get_xcc,
 118     .put = put_xcc,
 119 };
 120 #endif
 121
 122 static int cpu_pre_save(void *opaque)
 123 {
 124     SPARCCPU *cpu = opaque;
 125     CPUSPARCState *env = &cpu->env;
 126
 127     /* if env->cwp == env->nwindows - 1, this will set the ins of the last
 128      * window as the outs of the first window
 129      */
 130     cpu_set_cwp(env, env->cwp);
 131
 132     return 0;
 133 }
 134
 135 /* 32-bit SPARC retains migration compatibility with older versions
 136  * of QEMU; 64-bit SPARC has had a migration break since then, so the
 137  * versions are different.
 138  */
 139 #ifndef TARGET_SPARC64
 140 #define SPARC_VMSTATE_VER 7
 141 #else
 142 #define SPARC_VMSTATE_VER 9
 143 #endif
 144
 145 const VMStateDescription vmstate_sparc_cpu = {
 146     .name = "cpu",
 147     .version_id = SPARC_VMSTATE_VER,
 148     .minimum_version_id = SPARC_VMSTATE_VER,
 149     .pre_save = cpu_pre_save,
 150     .fields = (VMStateField[]) {
 151         VMSTATE_UINTTL_ARRAY(env.gregs, SPARCCPU, 8),
 152         VMSTATE_UINT32(env.nwindows, SPARCCPU),
 153         VMSTATE_VARRAY_MULTIPLY(env.regbase, SPARCCPU, env.nwindows, 16,
 154                                 vmstate_info_uinttl, target_ulong),
 155         VMSTATE_CPUDOUBLE_ARRAY(env.fpr, SPARCCPU, TARGET_DPREGS),
 156         VMSTATE_UINTTL(env.pc, SPARCCPU),
 157         VMSTATE_UINTTL(env.npc, SPARCCPU),
 158         VMSTATE_UINTTL(env.y, SPARCCPU),
 159         {
 160
 161             .name = "psr",
 162             .version_id = 0,
 163             .size = sizeof(uint32_t),
 164             .info = &vmstate_psr,
 165             .flags = VMS_SINGLE,
 166             .offset = 0,
 167         },
 168         VMSTATE_UINTTL(env.fsr, SPARCCPU),
 169         VMSTATE_UINTTL(env.tbr, SPARCCPU),
 170         VMSTATE_INT32(env.interrupt_index, SPARCCPU),
 171         VMSTATE_UINT32(env.pil_in, SPARCCPU),
 172 #ifndef TARGET_SPARC64
 173         /* MMU */
 174         VMSTATE_UINT32(env.wim, SPARCCPU),
 175         VMSTATE_UINT32_ARRAY(env.mmuregs, SPARCCPU, 32),
 176         VMSTATE_UINT64_ARRAY(env.mxccdata, SPARCCPU, 4),
 177         VMSTATE_UINT64_ARRAY(env.mxccregs, SPARCCPU, 8),
 178         VMSTATE_UINT32(env.mmubpctrv, SPARCCPU),
 179         VMSTATE_UINT32(env.mmubpctrc, SPARCCPU),
 180         VMSTATE_UINT32(env.mmubpctrs, SPARCCPU),
 181         VMSTATE_UINT64(env.mmubpaction, SPARCCPU),
 182         VMSTATE_UINT64_ARRAY(env.mmubpregs, SPARCCPU, 4),
 183 #else
 184         VMSTATE_UINT64(env.lsu, SPARCCPU),
 185         VMSTATE_UINT64_ARRAY(env.immu.mmuregs, SPARCCPU, 16),
 186         VMSTATE_UINT64_ARRAY(env.dmmu.mmuregs, SPARCCPU, 16),
 187         VMSTATE_STRUCT_ARRAY(env.itlb, SPARCCPU, 64, 0,
 188                              vmstate_tlb_entry, SparcTLBEntry),
 189         VMSTATE_STRUCT_ARRAY(env.dtlb, SPARCCPU, 64, 0,
 190                              vmstate_tlb_entry, SparcTLBEntry),
 191         VMSTATE_UINT32(env.mmu_version, SPARCCPU),
 192         VMSTATE_STRUCT_ARRAY(env.ts, SPARCCPU, MAXTL_MAX, 0,
 193                              vmstate_trap_state, trap_state),
 194         {
 195             .name = "xcc",
 196             .version_id = 0,
 197             .size = sizeof(uint32_t),
 198             .info = &vmstate_xcc,
 199             .flags = VMS_SINGLE,
 200             .offset = 0,
 201         },
 202         VMSTATE_UINT32(env.asi, SPARCCPU),
 203         VMSTATE_UINT32(env.pstate, SPARCCPU),
 204         VMSTATE_UINT32(env.tl, SPARCCPU),
 205         VMSTATE_UINT32(env.cansave, SPARCCPU),
 206         VMSTATE_UINT32(env.canrestore, SPARCCPU),
 207         VMSTATE_UINT32(env.otherwin, SPARCCPU),
 208         VMSTATE_UINT32(env.wstate, SPARCCPU),
 209         VMSTATE_UINT32(env.cleanwin, SPARCCPU),
 210         VMSTATE_UINT64_ARRAY(env.agregs, SPARCCPU, 8),
 211         VMSTATE_UINT64_ARRAY(env.bgregs, SPARCCPU, 8),
 212         VMSTATE_UINT64_ARRAY(env.igregs, SPARCCPU, 8),
 213         VMSTATE_UINT64_ARRAY(env.mgregs, SPARCCPU, 8),
 214         VMSTATE_UNUSED(4), /* was unused high half of uint64_t fprs */
 215         VMSTATE_UINT32(env.fprs, SPARCCPU),
 216         VMSTATE_UINT64(env.tick_cmpr, SPARCCPU),
 217         VMSTATE_UINT64(env.stick_cmpr, SPARCCPU),
 218         VMSTATE_CPU_TIMER(env.tick, SPARCCPU),
 219         VMSTATE_CPU_TIMER(env.stick, SPARCCPU),
 220         VMSTATE_UINT64(env.gsr, SPARCCPU),
 221         VMSTATE_UINT32(env.gl, SPARCCPU),
 222         VMSTATE_UINT64(env.hpstate, SPARCCPU),
 223         VMSTATE_UINT64_ARRAY(env.htstate, SPARCCPU, MAXTL_MAX),
 224         VMSTATE_UINT64(env.hintp, SPARCCPU),
 225         VMSTATE_UINT64(env.htba, SPARCCPU),
 226         VMSTATE_UINT64(env.hver, SPARCCPU),
 227         VMSTATE_UINT64(env.hstick_cmpr, SPARCCPU),
 228         VMSTATE_UINT64(env.ssr, SPARCCPU),
 229         VMSTATE_CPU_TIMER(env.hstick, SPARCCPU),
 230         /* On SPARC32 env.psrpil and env.cwp are migrated as part of the PSR */
 231         VMSTATE_UINT32(env.psrpil, SPARCCPU),
 232         VMSTATE_UINT32(env.cwp, SPARCCPU),
 233 #endif
 234         VMSTATE_END_OF_LIST()
 235     },
 236 };