mono/mini/mini-s390x.h

   1 #ifndef __MONO_MINI_S390X_H__
   2 #define __MONO_MINI_S390X_H__
   3
   4 #include <mono/arch/s390x/s390x-codegen.h>
   5 #include <mono/utils/mono-context.h>
   6 #include <signal.h>
   7
   8 #define MONO_ARCH_CPU_SPEC s390x_cpu_desc
   9
  10 #define MONO_MAX_IREGS 16
  11 #define MONO_MAX_FREGS 16
  12
  13 /*-------------------------------------------*/
  14 /* Parameters used by the register allocator */
  15 /*-------------------------------------------*/
  16
  17 #define S390_LONG(loc, opy, op, r, ix, br, off)                                 \
  18         if (has_ld) {                                                           \
  19                 if (s390_is_imm20(off)) {                                       \
  20                         s390_##opy (loc, r, ix, br, off);                       \
  21                 } else {                                                        \
  22                         s390_basr (code, s390_r13, 0);                          \
  23                         s390_j    (code, 6);                                    \
  24                         s390_llong(code, off);                                  \
  25                         s390_lg   (code, s390_r13, 0, s390_r13, 4);             \
  26                         s390_##op (code, r, s390_r13, br, 0);                   \
  27                 }                                                               \
  28         } else {                                                                \
  29                 if (s390_is_uimm12(off)) {                                      \
  30                         s390_##op (loc, r, ix, br, off);                        \
  31                 } else {                                                        \
  32                         s390_basr (code, s390_r13, 0);                          \
  33                         s390_j    (code, 6);                                    \
  34                         s390_llong(code, off);                                  \
  35                         s390_lg   (code, s390_r13, 0, s390_r13, 4);             \
  36                         s390_##op (code, r, s390_r13, br, 0);                   \
  37                 }                                                               \
  38         }
  39
  40 struct MonoLMF {
  41         gpointer    previous_lmf;
  42         gpointer    lmf_addr;
  43         MonoMethod *method;
  44         gulong      ebp;
  45         gulong      eip;
  46         gulong      pregs[6];
  47         gulong      gregs[16];
  48         gdouble     fregs[16];
  49 };
  50
  51 typedef struct MonoCompileArch {
  52         gpointer    litpool;
  53         glong       litsize;
  54         int         bkchain_reg;
  55 } MonoCompileArch;
  56
  57 typedef struct
  58 {
  59         void *prev;
  60         void *unused[5];
  61         void *regs[8];
  62         void *return_address;
  63 } MonoS390StackFrame;
  64
  65 typedef struct
  66 {
  67         char    n3:1;           // N3 instructions present
  68         char    zArch:1;        // z/Architecture mode installed
  69         char    zAct:1;         // z/Architecture mode active
  70         char    date:1;         // DATE enhancement facility
  71         char    idte1:1;        // IDTE present (PST)
  72         char    idte2:1;        // IDTE present (REG)
  73         char    asnlx:1;        // ASN and LX reuse facility
  74         char    stfle:1;        // STFLE installed
  75         char    zDATe:1;        // Enhanced DAT in z mode
  76         char    srstat:1;       // Sense running status facility
  77         char    cSSKE:1;        // Conditional SSKE facility
  78         char    topo:1;         // COnfiguration topology facility
  79         char    xTrans2:1;      // Extended translation facility 2
  80         char    msgSec:1;       // Message security facility
  81         char    longDsp:1;      // Long displacement facility
  82         char    hiPerfLD:1;     // High performance long displacement facility
  83         char    hfpMAS:1;       // HFP multiply-and-add/subtrace facility
  84         char    xImm:1;         // Extended immediate facility
  85         char    xTrans3:1;      // Extended translation facility 3
  86         char    hfpUnX:1;       // HFP unnormalized extension facility
  87         char    etf2:1;         // ETF2-enhancement facility
  88         char    stckf:1;        // Store-clock-fast facility
  89         char    parse:1;        // Parsing enhancement facility
  90         char    mvcos:1;        // MVCOS facility
  91         char    todSteer:1;     // TOD-clock steering facility
  92         char    etf3:1;         // ETF3-enhancement facility
  93         char    xCPUtm:1;       // Extract CPU time facility
  94         char    csst:1;         // Compare-swap-and-store facility
  95         char    csst2:1;        // Compare-swap-and-store facility 2
  96         char    giX:1;          // General instructions extension facility
  97         char    exX:1;          // Execute extensions facility
  98         char    ibm:1;          // IBM internal use
  99         char    fps:1;          // Floating point support enhancement
 100         char    dfp:1;          // Decimal floating point facility
 101         char    hiDFP:1;        // High Performance DFP facility
 102         char    pfpo:1;         // PFPO instruction facility
 103 } __attribute__((aligned(8))) facilityList_t;
 104
 105 // #define MONO_ARCH_SIGSEGV_ON_ALTSTACK                1
 106 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN                1
 107 #define MONO_ARCH_NO_EMULATE_LONG_MUL_OPTS              1
 108 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS             1
 109 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW                  1
 110 #define MONO_ARCH_NEED_DIV_CHECK                        1
 111 #define MONO_ARCH_HAVE_ATOMIC_ADD                       1
 112 #define MONO_ARCH_HAVE_ATOMIC_EXCHANGE                  1
 113 #define MONO_ARCH_SIGNAL_STACK_SIZE                     256*1024
 114 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS                   1
 115 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE       1
 116 #define MONO_ARCH_HAVE_IMT                              1
 117 #define MONO_ARCH_HAVE_TLS_GET                          1
 118 #define MONO_ARCH_ENABLE_MONO_LMF_VAR                   1
 119 #define MONO_ARCH_IMT_REG                               s390_r9
 120 #define MONO_ARCH_VTABLE_REG                            MONO_ARCH_IMT_REG
 121 #define MONO_ARCH_RGCTX_REG                             MONO_ARCH_IMT_REG
 122 #define MONO_ARCH_THIS_AS_FIRST_ARG                     1
 123 #define MONO_ARCH_HAVE_XP_UNWIND                        1
 124 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX                1
 125 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED                  1
 126 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG              1
 127 #define MONO_ARCH_USE_SIGACTION                         1
 128 #define MONO_ARCH_GC_MAPS_SUPPORTED                     1
 129 #define MONO_ARCH_GSHARED_SUPPORTED                     1
 130 #define MONO_ARCH_MONITOR_ENTER_ADJUSTMENT              1
 131
 132 #define S390_STACK_ALIGNMENT             8
 133 #define S390_FIRST_ARG_REG              s390_r2
 134 #define S390_LAST_ARG_REG               s390_r6
 135 #define S390_FIRST_FPARG_REG            s390_f0
 136 #define S390_LAST_FPARG_REG             s390_f6
 137 #define S390_PASS_STRUCTS_BY_VALUE       1
 138 #define S390_SMALL_RET_STRUCT_IN_REG     1
 139
 140 #define S390_NUM_REG_ARGS (S390_LAST_ARG_REG-S390_FIRST_ARG_REG+1)
 141 #define S390_NUM_REG_FPARGS ((S390_LAST_FPARG_REG-S390_FIRST_FPARG_REG)/2)
 142
 143 /*===============================================*/
 144 /* Definitions used by mini-codegen.c            */
 145 /*===============================================*/
 146
 147 /*------------------------------------------------------*/
 148 /* use s390_r2-s390_r6 as parm registers                */
 149 /* s390_r0, s390_r1, s390_r12, s390_r13 used internally */
 150 /* s390_r8..s390_r11 are used for global regalloc       */
 151 /* s390_r15 is the stack pointer                        */
 152 /*------------------------------------------------------*/
 153
 154 #define MONO_ARCH_CALLEE_REGS (0xfc)
 155
 156 #define MONO_ARCH_CALLEE_SAVED_REGS 0xff80
 157
 158 /*----------------------------------------*/
 159 /* use s390_f1/s390_f3-s390_f15 as temps  */
 160 /*----------------------------------------*/
 161
 162 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
 163
 164 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
 165
 166 #define MONO_ARCH_USE_FPSTACK FALSE
 167 #define MONO_ARCH_FPSTACK_SIZE 0
 168
 169 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 :               \
 170                                         ((desc == 'g') ? s390_f0 : - 1))
 171
 172 #define MONO_ARCH_INST_IS_FLOAT(desc)  ((desc == 'f') || (desc == 'g'))
 173
 174 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 175
 176 #define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
 177 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) -1
 178
 179 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
 180
 181 #define MONO_ARCH_FRAME_ALIGNMENT 8
 182 #define MONO_ARCH_CODE_ALIGNMENT 32
 183
 184 #define MONO_ARCH_RETREG1 s390_r2
 185
 186 /*-----------------------------------------------*/
 187 /* Macros used to generate instructions          */
 188 /*-----------------------------------------------*/
 189 #define S390_OFFSET(b, t)       (guchar *) ((guint64) (b) - (guint64) (t))
 190 #define S390_RELATIVE(b, t)     (guchar *) ((((guint64) (b) - (guint64) (t))) / 2)
 191
 192 #define CODEPTR(c, o) (o) = (short *) ((guint64) c - 2)
 193 #define PTRSLOT(c, o) *(o) = (short) ((guint64) c - (guint64) (o) + 2)/2
 194
 195 #define S390_CC_EQ                      8
 196 #define S390_ALIGN(v, a)        (((a) > 0 ? (((v) + ((a) - 1)) & ~((a) - 1)) : (v)))
 197
 198 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 199                 MonoS390StackFrame *sframe;                             \
 200                 __asm__ volatile("lgr   %0,15" : "=r" (sframe));        \
 201                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 202                 MONO_CONTEXT_SET_SP ((ctx), sframe->prev);              \
 203                 MONO_CONTEXT_SET_IP ((ctx), func);                      \
 204         } while (0)
 205
 206 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
 207
 208 /*------------------------------------------------------------------*/
 209 /*                                                                  */
 210 /* Name         - s390_patch_rel                                    */
 211 /*                                                                  */
 212 /* Function     - Patch the code with a given offset.               */
 213 /*                                                                  */
 214 /*------------------------------------------------------------------*/
 215
 216 static void inline
 217 s390_patch_rel (guchar *code, guint64 target)
 218 {
 219         guint32 *offset = (guint32 *) code;
 220
 221         if (target != 0) {
 222                 *offset = (guint32) target;
 223         }
 224 }
 225
 226 /*========================= End of Function ========================*/
 227
 228 /*------------------------------------------------------------------*/
 229 /*                                                                  */
 230 /* Name         - s390_patch_addr                                   */
 231 /*                                                                  */
 232 /* Function     - Patch the code with a given address.              */
 233 /*                                                                  */
 234 /*------------------------------------------------------------------*/
 235
 236 static void inline
 237 s390_patch_addr (guchar *code, guint64 target)
 238 {
 239         guint64 *offset = (guint64 *) code;
 240
 241         if (target != 0) {
 242                 *offset = target;
 243         }
 244 }
 245
 246 /*========================= End of Function ========================*/
 247
 248 /*------------------------------------------------------------------*/
 249 /*                                                                  */
 250 /* Name         - restoreLMF                                        */
 251 /*                                                                  */
 252 /* Function     - Restore the LMF state prior to exiting a method.  */
 253 /*                                                                  */
 254 /*------------------------------------------------------------------*/
 255
 256 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 257 {                                                                       \
 258         int lmfOffset = 0;                                              \
 259                                                                         \
 260         s390_lgr (code, s390_r13, frame_reg);                           \
 261                                                                         \
 262         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 263                                                                         \
 264         /*-------------------------------------------------*/           \
 265         /* r13 = my lmf                                    */           \
 266         /*-------------------------------------------------*/           \
 267         s390_aghi (code, s390_r13, lmfOffset);                          \
 268                                                                         \
 269         /*-------------------------------------------------*/           \
 270         /* r6 = &jit_tls->lmf                              */           \
 271         /*-------------------------------------------------*/           \
 272         s390_lg  (code, s390_r6, 0, s390_r13,                           \
 273                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 274                                                                         \
 275         /*-------------------------------------------------*/           \
 276         /* r0 = lmf.previous_lmf                           */           \
 277         /*-------------------------------------------------*/           \
 278         s390_lg  (code, s390_r0, 0, s390_r13,                           \
 279                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 280                                                                         \
 281         /*-------------------------------------------------*/           \
 282         /* jit_tls->lmf = previous_lmf                     */           \
 283         /*-------------------------------------------------*/           \
 284         s390_lg  (code, s390_r13, 0, s390_r6, 0);                       \
 285         s390_stg (code, s390_r0, 0, s390_r6, 0);                        \
 286 } while (0)
 287
 288 /*========================= End of Function ========================*/
 289
 290 #endif /* __MONO_MINI_S390X_H__ */