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