mono/mini/mini-s390.h

   1 #ifndef __MONO_MINI_S390_H__
   2 #define __MONO_MINI_S390_H__
   3
   4 #include <mono/arch/s390/s390-codegen.h>
   5 #include <signal.h>
   6
   7 #define MONO_ARCH_CPU_SPEC s390_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(cfg, 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(cfg, 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(cfg, call, reg, dr, FALSE);       \
  73                 break;                                                          \
  74                 case 4:                                                         \
  75                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOAD_MEMBASE,     \
  76                                 reg, sr, so);                                   \
  77                         mono_call_inst_add_outarg_reg(cfg, 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(cfg, call, reg, dr, FALSE);       \
  83                         reg = mono_regstate_next_int (cfg->rs);                 \
  84                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOAD_MEMBASE,     \
  85                                 reg, sr, so + sizeof (guint32));                                        \
  86                         mono_call_inst_add_outarg_reg(cfg, call, reg, dr + 1, FALSE);   \
  87                 break;                                                          \
  88         }                                                                       \
  89 } while (0)
  90
  91 #define MONO_OUTPUT_VTS(cfg, size, dr, dx, sr, so) do {                         \
  92         int tmpr;                                                               \
  93         switch (size) {                                                         \
  94                 case 0:                                                         \
  95                         tmpr = mono_regstate_next_int (cfg->rs);                \
  96                         MONO_EMIT_NEW_ICONST(cfg, tmpr, 0);                     \
  97                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
  98                                 dr, dx, tmpr);                                  \
  99                 break;                                                          \
 100                 case 1:                                                         \
 101                         tmpr = mono_regstate_next_int (cfg->rs);                \
 102                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU1_MEMBASE,   \
 103                                 tmpr, sr, so);                                  \
 104                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
 105                                 dr, dx, tmpr);                                  \
 106                 break;                                                          \
 107                 case 2:                                                         \
 108                         tmpr = mono_regstate_next_int (cfg->rs);                \
 109                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU2_MEMBASE,   \
 110                                 tmpr, sr, so);                                  \
 111                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
 112                                 dr, dx, tmpr);                                  \
 113                 break;                                                          \
 114                 case 4:                                                         \
 115                 case 8:                                                         \
 116                         MONO_EMIT_NEW_MOVE (cfg, dr, dx, sr, so, size);         \
 117                 break;                                                          \
 118         }                                                                       \
 119 } while (0)
 120
 121 struct MonoLMF {
 122         gpointer    previous_lmf;
 123         gpointer    lmf_addr;
 124         MonoMethod *method;
 125         gulong      ebp;
 126         gulong      eip;
 127         gulong      pregs[6];
 128         gulong      gregs[16];
 129         gdouble     fregs[16];
 130 };
 131
 132 typedef struct ucontext MonoContext;
 133
 134 typedef struct MonoCompileArch {
 135         int bkchain_reg;
 136 } MonoCompileArch;
 137
 138 typedef struct
 139 {
 140         void *prev;
 141         void *unused[5];
 142         void *regs[8];
 143         void *return_address;
 144 } MonoS390StackFrame;
 145
 146 typedef struct
 147 {
 148         gint32  size;
 149         gint32  offset;
 150         gint32  offPrm;
 151 } MonoS390ArgParm;
 152
 153 #define MONO_ARCH_EMULATE_FCONV_TO_I8           1
 154 #define MONO_ARCH_EMULATE_LCONV_TO_R8           1
 155 #define MONO_ARCH_EMULATE_LCONV_TO_R4           1
 156 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN        1
 157 #define MONO_ARCH_EMULATE_LMUL                  1
 158 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW          1
 159 #define MONO_ARCH_NEED_DIV_CHECK                1
 160 #define MONO_ARCH_HAVE_ATOMIC_ADD 1
 161 #define MONO_ARCH_HAVE_ATOMIC_EXCHANGE 1
 162 #define MONO_ARCH_ENABLE_NORMALIZE_OPCODES 1
 163 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
 164 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 165 // #define MONO_ARCH_SIGSEGV_ON_ALTSTACK                1
 166 // #define MONO_ARCH_SIGNAL_STACK_SIZE          65536
 167 // #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION        1
 168
 169 #define MONO_ARCH_USE_SIGACTION         1
 170 // #define CUSTOM_STACK_WALK            1
 171 // #define CUSTOM_EXCEPTION_HANDLING    1
 172 // #define mono_find_jit_info           mono_arch_find_jit_info
 173
 174 #define S390_STACK_ALIGNMENT             8
 175 #define S390_FIRST_ARG_REG              s390_r2
 176 #define S390_LAST_ARG_REG               s390_r6
 177 #define S390_FIRST_FPARG_REG            s390_f0
 178 #define S390_LAST_FPARG_REG             s390_f2
 179 #define S390_PASS_STRUCTS_BY_VALUE       1
 180 #define S390_SMALL_RET_STRUCT_IN_REG     1
 181
 182 #define S390_NUM_REG_ARGS (S390_LAST_ARG_REG-S390_FIRST_ARG_REG+1)
 183 #define S390_NUM_REG_FPARGS (S390_LAST_FPARG_REG-S390_FIRST_FPARG_REG)
 184
 185 /*===============================================*/
 186 /* Definitions used by mini-codegen.c            */
 187 /*===============================================*/
 188
 189 /*-----------------------------------------------------*/
 190 /* use s390_r2-s390_r6 as parm registers               */
 191 /* s390_r0, s390_r1, s390_r12, s390_r13 used internally*/
 192 /* s390_r8..s390_r11 are used for global regalloc      */
 193 /* s390_r15 is the stack pointer                       */
 194 /*-----------------------------------------------------*/
 195 #define MONO_ARCH_CALLEE_REGS (0xfc)
 196
 197 #define MONO_ARCH_CALLEE_SAVED_REGS 0xff80
 198
 199 /*----------------------------------------*/
 200 /* use s390_f1/s390_f3-s390_f15 as temps  */
 201 /*----------------------------------------*/
 202
 203 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
 204
 205 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
 206
 207 #define MONO_ARCH_USE_FPSTACK FALSE
 208 #define MONO_ARCH_FPSTACK_SIZE 0
 209
 210 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 :               \
 211                                         ((desc == 'L') ? s390_r3 :              \
 212                                         ((desc == 'g') ? s390_f0 : - 1)))
 213
 214 #define MONO_ARCH_INST_IS_FLOAT(desc)  ((desc == 'f') || (desc == 'g'))
 215
 216 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 217
 218 #define MONO_ARCH_INST_IS_REGPAIR(desc) ((desc == 'l') || (desc == 'L'))
 219 //#define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
 220 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) ((desc == 'l') ? (hr + 1) :        \
 221                                               ((desc == 'L') ? s390_r2 : -1))
 222
 223 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
 224
 225 #define MONO_ARCH_FRAME_ALIGNMENT 4
 226 #define MONO_ARCH_CODE_ALIGNMENT 32
 227
 228 #define MONO_ARCH_BASEREG s390_r15
 229 #define MONO_ARCH_RETREG1 s390_r2
 230
 231 /*-----------------------------------------------*/
 232 /* Macros used to generate instructions          */
 233 /*-----------------------------------------------*/
 234 #define S390_OFFSET(b, t)       (guchar *) ((gint32) (b) - (gint32) (t))
 235 #define S390_RELATIVE(b, t)     (guchar *) ((((gint32) (b) - (gint32) (t))) / 2)
 236
 237 #define CODEPTR(c, o) (o) = (short *) ((guint32) c - 2)
 238 #define PTRSLOT(c, o) *(o) = (short) ((guint32) c - (guint32) (o) + 2)/2
 239
 240 #define S390_CC_EQ                      8
 241 #define S390_ALIGN(v, a)        (((a) > 0 ? (((v) + ((a) - 1)) & ~((a) - 1)) : (v)))
 242
 243 #define MONO_CONTEXT_SET_IP(ctx,ip)                                     \
 244         do {                                                            \
 245                 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip;       \
 246                 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip;        \
 247         } while (0);
 248
 249 #define MONO_CONTEXT_SET_SP(ctx,bp) MONO_CONTEXT_SET_BP((ctx),(bp))
 250 #define MONO_CONTEXT_SET_BP(ctx,bp)                                     \
 251         do {                                                            \
 252                 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp;       \
 253                 (ctx)->uc_stack.ss_sp        = (void*)bp;       \
 254         } while (0);
 255
 256 #define MONO_CONTEXT_GET_IP(ctx) context_get_ip ((ctx))
 257 #define MONO_CONTEXT_GET_BP(ctx) MONO_CONTEXT_GET_SP((ctx))
 258 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
 259
 260 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 261                 MonoS390StackFrame *sframe;                             \
 262                 __asm__ volatile("lr    %0,15" : "=r" (sframe));        \
 263                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 264                 MONO_CONTEXT_SET_SP ((ctx), sframe->prev);              \
 265                 sframe = (MonoS390StackFrame*)sframe->prev;             \
 266                 MONO_CONTEXT_SET_IP ((ctx), sframe->return_address);    \
 267         } while (0)
 268
 269 /*------------------------------------------------------------------*/
 270 /*                                                                  */
 271 /* Name         - context_get_ip                                    */
 272 /*                                                                  */
 273 /* Function     - Extract the current instruction address from the  */
 274 /*                context.                                          */
 275 /*                                                                  */
 276 /*------------------------------------------------------------------*/
 277
 278 static inline gpointer
 279 context_get_ip (MonoContext *ctx)
 280 {
 281         gpointer ip;
 282
 283         ip = (gpointer) ((gint32) (ctx->uc_mcontext.psw.addr) & 0x7fffffff);
 284         return ip;
 285 }
 286
 287 /*========================= End of Function ========================*/
 288
 289 /*------------------------------------------------------------------*/
 290 /*                                                                  */
 291 /* Name         - s390_patch                                        */
 292 /*                                                                  */
 293 /* Function     - Patch the code with a given value.                */
 294 /*                                                                  */
 295 /*------------------------------------------------------------------*/
 296
 297 static void inline
 298 s390_patch (guchar *code, gint32 target)
 299 {
 300         gint32 *offset = (gint32 *) code;
 301
 302         if (target != 00) {
 303                 *offset = target;
 304         }
 305 }
 306
 307 /*========================= End of Function ========================*/
 308
 309 /*------------------------------------------------------------------*/
 310 /*                                                                  */
 311 /* Name         - restoreLMF                                        */
 312 /*                                                                  */
 313 /* Function     - Restore the LMF state prior to exiting a method.  */
 314 /*                                                                  */
 315 /*------------------------------------------------------------------*/
 316
 317 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 318 {                                                                       \
 319         int lmfOffset = 0;                                              \
 320                                                                         \
 321         s390_lr  (code, s390_r13, frame_reg);                           \
 322                                                                         \
 323         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 324                                                                         \
 325         /*-------------------------------------------------*/           \
 326         /* r13 = my lmf                                    */           \
 327         /*-------------------------------------------------*/           \
 328         s390_ahi (code, s390_r13, lmfOffset);                           \
 329                                                                         \
 330         /*-------------------------------------------------*/           \
 331         /* r6 = &jit_tls->lmf                              */           \
 332         /*-------------------------------------------------*/           \
 333         s390_l   (code, s390_r6, 0, s390_r13,                           \
 334                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 335                                                                         \
 336         /*-------------------------------------------------*/           \
 337         /* r0 = lmf.previous_lmf                           */           \
 338         /*-------------------------------------------------*/           \
 339         s390_l   (code, s390_r0, 0, s390_r13,                           \
 340                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 341                                                                         \
 342         /*-------------------------------------------------*/           \
 343         /* jit_tls->lmf = previous_lmf                     */           \
 344         /*-------------------------------------------------*/           \
 345         s390_l   (code, s390_r13, 0, s390_r6, 0);                       \
 346         s390_st  (code, s390_r0, 0, s390_r6, 0);                        \
 347 } while (0)
 348
 349 /*========================= End of Function ========================*/
 350
 351 #endif /* __MONO_MINI_S390_H__ */