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 <signal.h>
   6
   7 #define MONO_ARCH_CPU_SPEC s390x_cpu_desc
   8
   9 #define MONO_MAX_IREGS 16
  10 #define MONO_MAX_FREGS 16
  11
  12 /*-------------------------------------------*/
  13 /* Parameters used by the register allocator */
  14 /*-------------------------------------------*/
  15
  16 #define MONO_EMIT_NEW_MOVE(cfg,dest,offset,src,imm,size) do {                   \
  17                 MonoInst *inst;                                                 \
  18                 int tmpr = 0;                                                   \
  19                 int sReg, dReg;                                                 \
  20                                                                                 \
  21                 inst = mono_mempool_alloc0 ((cfg)->mempool, sizeof (MonoInst)); \
  22                 if (size > 256) {                                               \
  23                         tmpr = mono_regstate_next_int (cfg->rs);                \
  24                         MONO_EMIT_NEW_ICONST(cfg,tmpr,size);                    \
  25                         inst->dreg        = dest;                               \
  26                         inst->inst_offset = offset;                             \
  27                         inst->sreg1       = src;                                \
  28                         inst->inst_imm    = imm;                                \
  29                         inst->sreg2       = tmpr;                               \
  30                 } else {                                                        \
  31                         if (s390_is_uimm12(offset)) {                           \
  32                                 inst->dreg        = dest;                       \
  33                                 inst->inst_offset = offset;                     \
  34                         } else {                                                \
  35                                 dReg = mono_regstate_next_int (cfg->rs);        \
  36                                 MONO_EMIT_NEW_BIALU_IMM(cfg, OP_ADD_IMM,        \
  37                                         dReg, dest, offset);                    \
  38                                 inst->dreg        = dReg;                       \
  39                                 inst->inst_offset = 0;                          \
  40                         }                                                       \
  41                         if (s390_is_uimm12(imm)) {                              \
  42                                 inst->sreg1       = src;                        \
  43                                 inst->inst_imm    = imm;                        \
  44                         } else {                                                \
  45                                 sReg = mono_regstate_next_int (cfg->rs);        \
  46                                 MONO_EMIT_NEW_BIALU_IMM(cfg, OP_ADD_IMM,        \
  47                                         sReg, src, imm);                        \
  48                                 inst->sreg1       = sReg;                       \
  49                                 inst->inst_imm    = 0;                          \
  50                         }                                                       \
  51                 }                                                               \
  52                 inst->opcode      = OP_S390_MOVE;                               \
  53                 inst->backend.size        = size;                                       \
  54                 mono_bblock_add_inst (cfg->cbb, inst);                          \
  55         } while (0)
  56
  57 #define MONO_OUTPUT_VTR(cfg, size, dr, sr, so) do {                             \
  58         int reg = mono_regstate_next_int (cfg->rs);                             \
  59         switch (size) {                                                         \
  60                 case 0:                                                         \
  61                         MONO_EMIT_NEW_ICONST(cfg, reg, 0);                      \
  62                         mono_call_inst_add_outarg_reg(s, call, reg, dr, FALSE); \
  63                 break;                                                          \
  64                 case 1:                                                         \
  65                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU1_MEMBASE,   \
  66                                 reg, sr, so);                                   \
  67                         mono_call_inst_add_outarg_reg(s, call, reg, dr, FALSE); \
  68                 break;                                                          \
  69                 case 2:                                                         \
  70                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU2_MEMBASE,   \
  71                                 reg, sr, so);                                   \
  72                         mono_call_inst_add_outarg_reg(s, call, reg, dr, FALSE); \
  73                 break;                                                          \
  74                 case 4:                                                         \
  75                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADI4_MEMBASE,   \
  76                                 reg, sr, so);                                   \
  77                         mono_call_inst_add_outarg_reg(s, call, reg, dr, FALSE); \
  78                 break;                                                          \
  79                 case 8:                                                         \
  80                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOAD_MEMBASE,     \
  81                                 reg, sr, so);                                   \
  82                         mono_call_inst_add_outarg_reg(s, call, reg, dr, FALSE); \
  83                 break;                                                          \
  84         }                                                                       \
  85 } while (0)
  86
  87 #define MONO_OUTPUT_VTS(cfg, size, dr, dx, sr, so) do {                         \
  88         int tmpr;                                                               \
  89         switch (size) {                                                         \
  90                 case 0:                                                         \
  91                         tmpr = mono_regstate_next_int (cfg->rs);                \
  92                         MONO_EMIT_NEW_ICONST(cfg, tmpr, 0);                     \
  93                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
  94                                 dr, dx, tmpr);                                  \
  95                 break;                                                          \
  96                 case 1:                                                         \
  97                         tmpr = mono_regstate_next_int (cfg->rs);                \
  98                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU1_MEMBASE,   \
  99                                 tmpr, sr, so);                                  \
 100                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
 101                                 dr, dx, tmpr);                                  \
 102                 break;                                                          \
 103                 case 2:                                                         \
 104                         tmpr = mono_regstate_next_int (cfg->rs);                \
 105                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU2_MEMBASE,   \
 106                                 tmpr, sr, so);                                  \
 107                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
 108                                 dr, dx, tmpr);                                  \
 109                 break;                                                          \
 110                 case 4:                                                         \
 111                         tmpr = mono_regstate_next_int (cfg->rs);                \
 112                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADI4_MEMBASE,   \
 113                                 tmpr, sr, so);                                  \
 114                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
 115                                 dr, dx, tmpr);                                  \
 116                 break;                                                          \
 117                 case 8:                                                         \
 118                         MONO_EMIT_NEW_MOVE (cfg, dr, dx, sr, so, size);         \
 119                 break;                                                          \
 120         }                                                                       \
 121 } while (0)
 122
 123 #define S390_LONG(loc, opy, op, r, ix, br, off)                                 \
 124         if (has_ld) {                                                           \
 125                 if (s390_is_imm20(off)) {                                       \
 126                         s390_##opy (loc, r, ix, br, off);                       \
 127                 } else {                                                        \
 128                         s390_basr (code, s390_r13, 0);                          \
 129                         s390_j    (code, 6);                                    \
 130                         s390_llong(code, off);                                  \
 131                         s390_lg   (code, s390_r13, 0, s390_r13, 4);             \
 132                         s390_##op (code, r, s390_r13, br, 0);                   \
 133                 }                                                               \
 134         } else {                                                                \
 135                 if (s390_is_uimm12(off)) {                                      \
 136                         s390_##op (loc, r, ix, br, off);                        \
 137                 } else {                                                        \
 138                         s390_basr (code, s390_r13, 0);                          \
 139                         s390_j    (code, 6);                                    \
 140                         s390_llong(code, off);                                  \
 141                         s390_lg   (code, s390_r13, 0, s390_r13, 4);             \
 142                         s390_##op (code, r, s390_r13, br, 0);                   \
 143                 }                                                               \
 144         }
 145
 146 struct MonoLMF {
 147         gpointer    previous_lmf;
 148         gpointer    lmf_addr;
 149         MonoMethod *method;
 150         gulong      ebp;
 151         gulong      eip;
 152         gulong      pregs[6];
 153         gulong      gregs[16];
 154         gdouble     fregs[16];
 155 };
 156
 157 typedef struct ucontext MonoContext;
 158
 159 typedef struct MonoCompileArch {
 160         gpointer    litpool;
 161         glong       litsize;
 162 } MonoCompileArch;
 163
 164 typedef struct
 165 {
 166         void *prev;
 167         void *unused[5];
 168         void *regs[8];
 169         void *return_address;
 170 } MonoS390StackFrame;
 171
 172 // #define MONO_ARCH_SIGSEGV_ON_ALTSTACK                1
 173 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN        1
 174 #define MONO_ARCH_NO_EMULATE_LONG_MUL_OPTS      1
 175 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS     1
 176 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW          1
 177 #define MONO_ARCH_NEED_DIV_CHECK                1
 178 #define MONO_ARCH_HAVE_ATOMIC_ADD 1
 179 #define MONO_ARCH_HAVE_ATOMIC_EXCHANGE 1
 180 #define MONO_ARCH_SIGNAL_STACK_SIZE             256*1024
 181 #define MONO_ARCH_ENABLE_NORMALIZE_OPCODES 1
 182 // #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION        1
 183
 184 #define MONO_ARCH_USE_SIGACTION         1
 185
 186 #define S390_STACK_ALIGNMENT             8
 187 #define S390_FIRST_ARG_REG              s390_r2
 188 #define S390_LAST_ARG_REG               s390_r6
 189 #define S390_FIRST_FPARG_REG            s390_f0
 190 #define S390_LAST_FPARG_REG             s390_f6
 191 #define S390_PASS_STRUCTS_BY_VALUE       1
 192 #define S390_SMALL_RET_STRUCT_IN_REG     1
 193
 194 #define S390_NUM_REG_ARGS (S390_LAST_ARG_REG-S390_FIRST_ARG_REG+1)
 195 #define S390_NUM_REG_FPARGS ((S390_LAST_FPARG_REG-S390_FIRST_FPARG_REG)/2)
 196
 197 /*===============================================*/
 198 /* Definitions used by mini-codegen.c            */
 199 /*===============================================*/
 200
 201 /*--------------------------------------------*/
 202 /* use s390_r2-s390_r6 as parm registers      */
 203 /* s390_r0, s390_r1, s390_r13 used internally */
 204 /* s390_r15 is the stack pointer              */
 205 /*--------------------------------------------*/
 206 #define MONO_ARCH_CALLEE_REGS (0x1ffc)
 207
 208 #define MONO_ARCH_CALLEE_SAVED_REGS 0xff80
 209
 210 /*----------------------------------------*/
 211 /* use s390_f1/s390_f3-s390_f15 as temps  */
 212 /*----------------------------------------*/
 213
 214 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
 215
 216 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
 217
 218 #define MONO_ARCH_USE_FPSTACK FALSE
 219 #define MONO_ARCH_FPSTACK_SIZE 0
 220
 221 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 :               \
 222                                         ((desc == 'g') ? s390_f0 : - 1))
 223
 224 #define MONO_ARCH_INST_IS_FLOAT(desc)  ((desc == 'f') || (desc == 'g'))
 225
 226 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 227
 228 #define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
 229 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) -1
 230
 231 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
 232
 233 #define MONO_ARCH_FRAME_ALIGNMENT 8
 234 #define MONO_ARCH_CODE_ALIGNMENT 32
 235
 236 #define MONO_ARCH_BASEREG s390_r15
 237 #define MONO_ARCH_RETREG1 s390_r2
 238
 239 /*-----------------------------------------------*/
 240 /* Macros used to generate instructions          */
 241 /*-----------------------------------------------*/
 242 #define S390_OFFSET(b, t)       (guchar *) ((guint64) (b) - (guint64) (t))
 243 #define S390_RELATIVE(b, t)     (guchar *) ((((guint64) (b) - (guint64) (t))) / 2)
 244
 245 #define CODEPTR(c, o) (o) = (short *) ((guint64) c - 2)
 246 #define PTRSLOT(c, o) *(o) = (short) ((guint64) c - (guint64) (o) + 2)/2
 247
 248 #define S390_CC_EQ                      8
 249 #define S390_ALIGN(v, a)        (((a) > 0 ? (((v) + ((a) - 1)) & ~((a) - 1)) : (v)))
 250
 251 #define MONO_CONTEXT_SET_IP(ctx,ip)                                     \
 252         do {                                                            \
 253                 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip;       \
 254                 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip;        \
 255         } while (0);
 256
 257 #define MONO_CONTEXT_SET_SP(ctx,bp) MONO_CONTEXT_SET_BP((ctx),(bp))
 258 #define MONO_CONTEXT_SET_BP(ctx,bp)                                     \
 259         do {                                                            \
 260                 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp;       \
 261                 (ctx)->uc_stack.ss_sp        = (void*)bp;               \
 262         } while (0)
 263
 264 #define MONO_CONTEXT_GET_IP(ctx) (gpointer) (ctx)->uc_mcontext.psw.addr
 265 #define MONO_CONTEXT_GET_BP(ctx) MONO_CONTEXT_GET_SP((ctx))
 266 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
 267
 268 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 269                 MonoS390StackFrame *sframe;                             \
 270                 __asm__ volatile("lgr   %0,15" : "=r" (sframe));        \
 271                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 272                 MONO_CONTEXT_SET_SP ((ctx), sframe->prev);              \
 273                 sframe = (MonoS390StackFrame*)sframe->prev;             \
 274                 MONO_CONTEXT_SET_IP ((ctx), sframe->return_address);    \
 275         } while (0)
 276
 277 /*------------------------------------------------------------------*/
 278 /*                                                                  */
 279 /* Name         - s390_patch_rel                                    */
 280 /*                                                                  */
 281 /* Function     - Patch the code with a given offset.               */
 282 /*                                                                  */
 283 /*------------------------------------------------------------------*/
 284
 285 static void inline
 286 s390_patch_rel (guchar *code, guint64 target)
 287 {
 288         guint32 *offset = (guint32 *) code;
 289
 290         if (target != 0) {
 291                 *offset = (guint32) target;
 292         }
 293 }
 294
 295 /*========================= End of Function ========================*/
 296
 297 /*------------------------------------------------------------------*/
 298 /*                                                                  */
 299 /* Name         - s390_patch_addr                                   */
 300 /*                                                                  */
 301 /* Function     - Patch the code with a given address.              */
 302 /*                                                                  */
 303 /*------------------------------------------------------------------*/
 304
 305 static void inline
 306 s390_patch_addr (guchar *code, guint64 target)
 307 {
 308         guint64 *offset = (guint64 *) code;
 309
 310         if (target != 0) {
 311                 *offset = target;
 312         }
 313 }
 314
 315 /*========================= End of Function ========================*/
 316
 317 /*------------------------------------------------------------------*/
 318 /*                                                                  */
 319 /* Name         - restoreLMF                                        */
 320 /*                                                                  */
 321 /* Function     - Restore the LMF state prior to exiting a method.  */
 322 /*                                                                  */
 323 /*------------------------------------------------------------------*/
 324
 325 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 326 {                                                                       \
 327         int lmfOffset = 0;                                              \
 328                                                                         \
 329         s390_lgr (code, s390_r13, frame_reg);                           \
 330                                                                         \
 331         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 332                                                                         \
 333         /*-------------------------------------------------*/           \
 334         /* r13 = my lmf                                    */           \
 335         /*-------------------------------------------------*/           \
 336         s390_aghi (code, s390_r13, lmfOffset);                          \
 337                                                                         \
 338         /*-------------------------------------------------*/           \
 339         /* r6 = &jit_tls->lmf                              */           \
 340         /*-------------------------------------------------*/           \
 341         s390_lg  (code, s390_r6, 0, s390_r13,                           \
 342                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 343                                                                         \
 344         /*-------------------------------------------------*/           \
 345         /* r0 = lmf.previous_lmf                           */           \
 346         /*-------------------------------------------------*/           \
 347         s390_lg  (code, s390_r0, 0, s390_r13,                           \
 348                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 349                                                                         \
 350         /*-------------------------------------------------*/           \
 351         /* jit_tls->lmf = previous_lmf                     */           \
 352         /*-------------------------------------------------*/           \
 353         s390_lg  (code, s390_r13, 0, s390_r6, 0);                       \
 354         s390_stg (code, s390_r0, 0, s390_r6, 0);                        \
 355 } while (0)
 356
 357 /*========================= End of Function ========================*/
 358
 359 #endif /* __MONO_MINI_S390X_H__ */