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_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->unused      = 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 1:                                                         \
  60                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU1_MEMBASE,   \
  61                                 reg, sr, so);                                   \
  62                         mono_call_inst_add_outarg_reg (call, reg, dr, FALSE);   \
  63                 break;                                                          \
  64                 case 2:                                                         \
  65                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU2_MEMBASE,   \
  66                                 reg, sr, so);                                   \
  67                         mono_call_inst_add_outarg_reg (call, reg, dr, FALSE);   \
  68                 break;                                                          \
  69                 case 4:                                                         \
  70                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOAD_MEMBASE,     \
  71                                 reg, sr, so);                                   \
  72                         mono_call_inst_add_outarg_reg (call, reg, dr, FALSE);   \
  73                 break;                                                          \
  74                 case 8:                                                         \
  75                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOAD_MEMBASE,     \
  76                                 reg, sr, so);                                   \
  77                         mono_call_inst_add_outarg_reg (call, reg, dr, FALSE);   \
  78                         dr++; so += sizeof(guint32);                            \
  79                         reg = mono_regstate_next_int (cfg->rs);                 \
  80                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOAD_MEMBASE,     \
  81                                 reg, sr, so);                                   \
  82                         mono_call_inst_add_outarg_reg (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 1:                                                         \
  91                         tmpr = mono_regstate_next_int (cfg->rs);                \
  92                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU1_MEMBASE,   \
  93                                 tmpr, sr, so);                                  \
  94                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
  95                                 dr, dx, tmpr);                                  \
  96                 break;                                                          \
  97                 case 2:                                                         \
  98                         tmpr = mono_regstate_next_int (cfg->rs);                \
  99                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU2_MEMBASE,   \
 100                                 tmpr, sr, so);                                  \
 101                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
 102                                 dr, dx, tmpr);                                  \
 103                 break;                                                          \
 104                 case 4:                                                         \
 105                 case 8:                                                         \
 106                         MONO_EMIT_NEW_MOVE (cfg, dr, dx, sr, so, size);         \
 107                 break;                                                          \
 108         }                                                                       \
 109 } while (0)
 110
 111 struct MonoLMF {
 112         gpointer    previous_lmf;
 113         gpointer    lmf_addr;
 114         MonoMethod *method;
 115         gulong      ebp;
 116         gulong      eip;
 117         gulong      pregs[6];
 118         gulong      gregs[16];
 119         gdouble     fregs[16];
 120 };
 121
 122 typedef struct ucontext MonoContext;
 123
 124 typedef struct MonoCompileArch {
 125 } MonoCompileArch;
 126
 127 typedef struct
 128 {
 129         void *prev;
 130         void *unused[5];
 131         void *regs[8];
 132         void *return_address;
 133 } MonoS390StackFrame;
 134
 135 typedef struct
 136 {
 137         gint32  size;
 138         gint32  offset;
 139         gint32  offPrm;
 140 } MonoS390ArgParm;
 141
 142 #define MONO_ARCH_EMULATE_FCONV_TO_I8           1
 143 #define MONO_ARCH_EMULATE_LCONV_TO_R8           1
 144 #define MONO_ARCH_EMULATE_LCONV_TO_R4           1
 145 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN        1
 146 #define MONO_ARCH_EMULATE_LMUL                  1
 147 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW          1
 148 #define MONO_ARCH_NEED_DIV_CHECK                1
 149 // #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION        1
 150
 151 #define MONO_ARCH_USE_SIGACTION         1
 152 // #define CUSTOM_STACK_WALK            1
 153 // #define CUSTOM_EXCEPTION_HANDLING    1
 154 #define mono_find_jit_info              mono_arch_find_jit_info
 155
 156 #define S390_STACK_ALIGNMENT             8
 157 #define S390_FIRST_ARG_REG              s390_r2
 158 #define S390_LAST_ARG_REG               s390_r6
 159 #define S390_FIRST_FPARG_REG            s390_f0
 160 #define S390_LAST_FPARG_REG             s390_f2
 161 #define S390_PASS_STRUCTS_BY_VALUE       1
 162 #define S390_SMALL_RET_STRUCT_IN_REG     1
 163
 164 #define S390_NUM_REG_ARGS (S390_LAST_ARG_REG-S390_FIRST_ARG_REG+1)
 165 #define S390_NUM_REG_FPARGS (S390_LAST_FPARG_REG-S390_FIRST_FPARG_REG)
 166
 167 /*===============================================*/
 168 /* Definitions used by mini-codegen.c            */
 169 /*===============================================*/
 170
 171 /*--------------------------------------------*/
 172 /* use s390_r2-s390_r6 as parm registers      */
 173 /* s390_r0, s390_r1, s390_r13 used internally */
 174 /* s390_r15 is the stack pointer              */
 175 /*--------------------------------------------*/
 176 #define MONO_ARCH_CALLEE_REGS (0x1ffc)
 177
 178 #define MONO_ARCH_CALLEE_SAVED_REGS 0xff80
 179
 180 /*----------------------------------------*/
 181 /* use s390_f1/s390_f3-s390_f15 as temps  */
 182 /*----------------------------------------*/
 183
 184 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
 185
 186 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
 187
 188 #define MONO_ARCH_USE_FPSTACK FALSE
 189 #define MONO_ARCH_FPSTACK_SIZE 0
 190
 191 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 :               \
 192                                         ((desc == 'L') ? s390_r3 :              \
 193                                         ((desc == 'g') ? s390_f0 : - 1)))
 194
 195 #define MONO_ARCH_INST_IS_FLOAT(desc)  ((desc == 'f') || (desc == 'g'))
 196
 197 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 198
 199 #define MONO_ARCH_INST_IS_REGPAIR(desc) ((desc == 'l') || (desc == 'L'))
 200 //#define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
 201 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) ((desc == 'l') ? (hr + 1) :        \
 202                                               ((desc == 'L') ? s390_r2 : -1))
 203
 204 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
 205
 206 #define MONO_ARCH_FRAME_ALIGNMENT (sizeof (glong))
 207 #define MONO_ARCH_CODE_ALIGNMENT 32
 208
 209 #define MONO_ARCH_BASEREG s390_r15
 210 #define MONO_ARCH_RETREG1 s390_r2
 211
 212 #define MONO_SPARC_STACK_BIAS 0
 213
 214 /*-----------------------------------------------*/
 215 /* Macros used to generate instructions          */
 216 /*-----------------------------------------------*/
 217 #define S390_OFFSET(b, t)       (guchar *) ((gint32) (b) - (gint32) (t))
 218 #define S390_RELATIVE(b, t)     (guchar *) ((((gint32) (b) - (gint32) (t))) / 2)
 219
 220 #define CODEPTR(c, o) (o) = (short *) ((guint32) c - 2)
 221 #define PTRSLOT(c, o) *(o) = (short) ((guint32) c - (guint32) (o) + 2)/2
 222
 223 #define S390_CC_EQ                      8
 224 #define S390_ALIGN(v, a)        (((a) > 0 ? (((v) + ((a) - 1)) & ~((a) - 1)) : (v)))
 225
 226 #define MONO_CONTEXT_SET_IP(ctx,ip)                                     \
 227         do {                                                            \
 228                 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip;       \
 229                 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip;        \
 230         } while (0);
 231
 232 #define MONO_CONTEXT_SET_SP(ctx,bp) MONO_CONTEXT_SET_BP((ctx),(bp))
 233 #define MONO_CONTEXT_SET_BP(ctx,bp)                                     \
 234         do {                                                            \
 235                 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp;       \
 236                 (ctx)->uc_stack.ss_sp        = (void*)bp;       \
 237         } while (0);
 238
 239 #define MONO_CONTEXT_GET_IP(ctx) context_get_ip ((ctx))
 240 #define MONO_CONTEXT_GET_BP(ctx) MONO_CONTEXT_GET_SP((ctx))
 241 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
 242
 243 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 244                 MonoS390StackFrame *sframe;                             \
 245                 __asm__ volatile("l     %0,0(15)" : "=r" (sframe));     \
 246                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 247                 sframe = (MonoS390StackFrame*)sframe->prev;             \
 248                 MONO_CONTEXT_SET_IP ((ctx), sframe->return_address);    \
 249         } while (0)
 250
 251 /*------------------------------------------------------------------*/
 252 /*                                                                  */
 253 /* Name         - context_get_ip                                    */
 254 /*                                                                  */
 255 /* Function     - Extract the current instruction address from the  */
 256 /*                context.                                          */
 257 /*                                                                  */
 258 /*------------------------------------------------------------------*/
 259
 260 static inline gpointer
 261 context_get_ip (MonoContext *ctx)
 262 {
 263         gpointer ip;
 264
 265         ip = (gpointer) ((gint32) (ctx->uc_mcontext.psw.addr) & 0x7fffffff);
 266         return ip;
 267 }
 268
 269 /*========================= End of Function ========================*/
 270
 271 /*------------------------------------------------------------------*/
 272 /*                                                                  */
 273 /* Name         - s390_patch                                        */
 274 /*                                                                  */
 275 /* Function     - Patch the code with a given value.                */
 276 /*                                                                  */
 277 /*------------------------------------------------------------------*/
 278
 279 static void inline
 280 s390_patch (guchar *code, gint32 target)
 281 {
 282         gint32 *offset = (gint32 *) code;
 283
 284         if (target != 00) {
 285                 *offset = target;
 286         }
 287 }
 288
 289 /*========================= End of Function ========================*/
 290
 291 /*------------------------------------------------------------------*/
 292 /*                                                                  */
 293 /* Name         - restoreLMF                                        */
 294 /*                                                                  */
 295 /* Function     - Restore the LMF state prior to exiting a method.  */
 296 /*                                                                  */
 297 /*------------------------------------------------------------------*/
 298
 299 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 300 {                                                                       \
 301         int lmfOffset = 0;                                              \
 302                                                                         \
 303         s390_lr  (code, s390_r13, frame_reg);                           \
 304                                                                         \
 305         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 306                                                                         \
 307         /*-------------------------------------------------*/           \
 308         /* r13 = my lmf                                    */           \
 309         /*-------------------------------------------------*/           \
 310         s390_ahi (code, s390_r13, lmfOffset);                           \
 311                                                                         \
 312         /*-------------------------------------------------*/           \
 313         /* r6 = &jit_tls->lmf                              */           \
 314         /*-------------------------------------------------*/           \
 315         s390_l   (code, s390_r6, 0, s390_r13,                           \
 316                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 317                                                                         \
 318         /*-------------------------------------------------*/           \
 319         /* r0 = lmf.previous_lmf                           */           \
 320         /*-------------------------------------------------*/           \
 321         s390_l   (code, s390_r0, 0, s390_r13,                           \
 322                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 323                                                                         \
 324         /*-------------------------------------------------*/           \
 325         /* jit_tls->lmf = previous_lmf                     */           \
 326         /*-------------------------------------------------*/           \
 327         s390_l   (code, s390_r13, 0, s390_r6, 0);                       \
 328         s390_st  (code, s390_r0, 0, s390_r6, 0);                        \
 329 } while (0)
 330
 331 /*========================= End of Function ========================*/
 332
 333 #endif /* __MONO_MINI_S390_H__ */