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 #define MONO_ARCH_FRAME_ALIGNMENT 8
  11
  12 #define MONO_EMIT_NEW_MOVE(cfg,dest,offset,src,imm,size) do {                   \
  13                 MonoInst *inst;                                                 \
  14                 int tmpr = 0;                                                   \
  15                 int sReg, dReg;                                                 \
  16                                                                                 \
  17                 inst = mono_mempool_alloc0 ((cfg)->mempool, sizeof (MonoInst)); \
  18                 if (size > 256) {                                               \
  19                         tmpr = mono_regstate_next_int (cfg->rs);                \
  20                         MONO_EMIT_NEW_ICONST(cfg,tmpr,size);                    \
  21                         inst->dreg        = dest;                               \
  22                         inst->inst_offset = offset;                             \
  23                         inst->sreg1       = src;                                \
  24                         inst->inst_imm    = imm;                                \
  25                         inst->sreg2       = tmpr;                               \
  26                 } else {                                                        \
  27                         if (s390_is_uimm12(offset)) {                           \
  28                                 inst->dreg        = dest;                       \
  29                                 inst->inst_offset = offset;                     \
  30                         } else {                                                \
  31                                 dReg = mono_regstate_next_int (cfg->rs);        \
  32                                 MONO_EMIT_NEW_BIALU_IMM(cfg, OP_ADD_IMM,        \
  33                                         dReg, dest, offset);                    \
  34                                 inst->dreg        = dReg;                       \
  35                                 inst->inst_offset = 0;                          \
  36                         }                                                       \
  37                         if (s390_is_uimm12(imm)) {                              \
  38                                 inst->sreg1       = src;                        \
  39                                 inst->inst_imm    = imm;                        \
  40                         } else {                                                \
  41                                 sReg = mono_regstate_next_int (cfg->rs);        \
  42                                 MONO_EMIT_NEW_BIALU_IMM(cfg, OP_ADD_IMM,        \
  43                                         sReg, src, imm);                        \
  44                                 inst->sreg1       = sReg;                       \
  45                                 inst->inst_imm    = 0;                          \
  46                         }                                                       \
  47                 }                                                               \
  48                 inst->opcode      = OP_S390_MOVE;                               \
  49                 inst->unused      = size;                                       \
  50                 mono_bblock_add_inst (cfg->cbb, inst);                          \
  51         } while (0)
  52
  53 #define MONO_OUTPUT_VTR(cfg, size, dr, sr, so) do {                             \
  54         switch (size) {                                                         \
  55                 case 1:                                                         \
  56                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU1_MEMBASE,   \
  57                                 dr, sr, so);                                    \
  58                 break;                                                          \
  59                 case 2:                                                         \
  60                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU2_MEMBASE,   \
  61                                 dr, sr, so);                                    \
  62                 break;                                                          \
  63                 case 4:                                                         \
  64                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOAD_MEMBASE,     \
  65                                 dr, sr, so);                                    \
  66                 break;                                                          \
  67                 case 8:                                                         \
  68                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOAD_MEMBASE,     \
  69                                 dr, sr, so);                                    \
  70                         dr++; so += sizeof(guint32);                            \
  71                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOAD_MEMBASE,     \
  72                                 dr, sr, so);                                    \
  73                 break;                                                          \
  74         }                                                                       \
  75 } while (0)
  76
  77 #define MONO_OUTPUT_VTS(cfg, size, dr, dx, sr, so) do {                         \
  78         int tmpr;                                                               \
  79         switch (size) {                                                         \
  80                 case 1:                                                         \
  81                         tmpr = mono_regstate_next_int (cfg->rs);                \
  82                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU1_MEMBASE,   \
  83                                 tmpr, sr, so);                                  \
  84                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
  85                                 tmpr, dr, dx);                                  \
  86                 break;                                                          \
  87                 case 2:                                                         \
  88                         tmpr = mono_regstate_next_int (cfg->rs);                \
  89                         MONO_EMIT_NEW_LOAD_MEMBASE_OP(cfg, OP_LOADU2_MEMBASE,   \
  90                                 tmpr, sr, so);                                  \
  91                         MONO_EMIT_NEW_STORE_MEMBASE(cfg, OP_STORE_MEMBASE_REG,  \
  92                                 tmpr, dr, dx);                                  \
  93                 break;                                                          \
  94                 case 4:                                                         \
  95                 case 8:                                                         \
  96                         MONO_EMIT_NEW_MOVE (cfg, dr, dx, sr, so, size);         \
  97                 break;                                                          \
  98         }                                                                       \
  99 } while (0)
 100
 101 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
 102  * reproduceable results for benchmarks */
 103 #define MONO_ARCH_CODE_ALIGNMENT 32
 104
 105 struct MonoLMF {
 106         gpointer    previous_lmf;
 107         gpointer    lmf_addr;
 108         MonoMethod *method;
 109         gulong      ebp;
 110         gulong      eip;
 111         gulong      gregs[16];
 112         gdouble     fregs[16];
 113 };
 114
 115 typedef struct ucontext MonoContext;
 116
 117 typedef struct MonoCompileArch {
 118 } MonoCompileArch;
 119
 120 typedef struct
 121 {
 122   void *prev;
 123   void *unused[5];
 124   void *regs[8];
 125   void *return_address;
 126 } MonoS390StackFrame;
 127
 128 #define MONO_ARCH_EMULATE_FCONV_TO_I8           1
 129 #define MONO_ARCH_EMULATE_LCONV_TO_R8           1
 130 #define MONO_ARCH_EMULATE_LCONV_TO_R4           1
 131 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN        1
 132 #define MONO_ARCH_EMULATE_LMUL                  1
 133 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW          1
 134 #define MONO_ARCH_NEED_DIV_CHECK                1
 135 // #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION        1
 136
 137 #define MONO_ARCH_USE_SIGACTION         1
 138 // #define CUSTOM_STACK_WALK            1
 139 // #define CUSTOM_EXCEPTION_HANDLING    1
 140 #define mono_find_jit_info              mono_arch_find_jit_info
 141
 142 #define S390_STACK_ALIGNMENT             8
 143 #define S390_FIRST_ARG_REG              s390_r2
 144 #define S390_LAST_ARG_REG               s390_r6
 145 #define S390_FIRST_FPARG_REG            s390_f0
 146 #define S390_LAST_FPARG_REG             s390_f2
 147 #define S390_PASS_STRUCTS_BY_VALUE       1
 148 #define S390_SMALL_RET_STRUCT_IN_REG     1
 149
 150 #define S390_NUM_REG_ARGS (S390_LAST_ARG_REG-S390_FIRST_ARG_REG+1)
 151 #define S390_NUM_REG_FPARGS (S390_LAST_FPARG_REG-S390_FIRST_FPARG_REG)
 152
 153 #define S390_OFFSET(b, t)       (guchar *) ((gint32) (b) - (gint32) (t))
 154 #define S390_RELATIVE(b, t)     (guchar *) ((((gint32) (b) - (gint32) (t))) / 2)
 155
 156 #define CODEPTR(c, o) (o) = (short *) ((guint32) c - 2)
 157 #define PTRSLOT(c, o) *(o) = (short) ((guint32) c - (guint32) (o) + 2)/2
 158
 159 #define S390_CC_EQ                      8
 160 #define S390_ALIGN(v, a)        (((a) > 0 ? (((v) + ((a) - 1)) & ~((a) - 1)) : (v)))
 161
 162 #define MONO_CONTEXT_SET_IP(ctx,ip)                                     \
 163         do {                                                            \
 164                 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip;       \
 165                 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip;        \
 166         } while (0);
 167
 168 #define MONO_CONTEXT_SET_SP(ctx,bp) MONO_CONTEXT_SET_BP((ctx),(bp))
 169 #define MONO_CONTEXT_SET_BP(ctx,bp)                                     \
 170         do {                                                            \
 171                 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp;       \
 172                 (ctx)->uc_stack.ss_sp        = (unsigned long)bp;       \
 173         } while (0);
 174
 175 #define MONO_CONTEXT_GET_IP(ctx) context_get_ip ((ctx))
 176 #define MONO_CONTEXT_GET_BP(ctx) MONO_CONTEXT_GET_SP((ctx))
 177 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
 178
 179 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 180                 MonoS390StackFrame *sframe;                             \
 181                 __asm__ volatile("l     %0,0(15)" : "=r" (sframe));     \
 182                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 183                 sframe = (MonoS390StackFrame*)sframe->prev;             \
 184                 MONO_CONTEXT_SET_IP ((ctx), sframe->return_address);    \
 185         } while (0)
 186
 187 /*------------------------------------------------------------------*/
 188 /*                                                                  */
 189 /* Name         - context_get_ip                                    */
 190 /*                                                                  */
 191 /* Function     - Extract the current instruction address from the  */
 192 /*                context.                                          */
 193 /*                                                                  */
 194 /*------------------------------------------------------------------*/
 195
 196 static inline gpointer
 197 context_get_ip (MonoContext *ctx)
 198 {
 199         gpointer ip;
 200
 201         ip = (gpointer) ((gint32) (ctx->uc_mcontext.psw.addr) & 0x7fffffff);
 202         return ip;
 203 }
 204
 205 /*========================= End of Function ========================*/
 206
 207 /*------------------------------------------------------------------*/
 208 /*                                                                  */
 209 /* Name         - s390_patch                                        */
 210 /*                                                                  */
 211 /* Function     - Patch the code with a given value.                */
 212 /*                                                                  */
 213 /*------------------------------------------------------------------*/
 214
 215 static void inline
 216 s390_patch (guchar *code, gint32 target)
 217 {
 218         gint32 *offset = (gint32 *) code;
 219
 220         if (target != 00) {
 221                 *offset = target;
 222         }
 223 }
 224
 225 /*========================= End of Function ========================*/
 226
 227 /*------------------------------------------------------------------*/
 228 /*                                                                  */
 229 /* Name         - restoreLMF                                        */
 230 /*                                                                  */
 231 /* Function     - Restore the LMF state prior to exiting a method.  */
 232 /*                                                                  */
 233 /*------------------------------------------------------------------*/
 234
 235 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 236 {                                                                       \
 237         int lmfOffset = 0;                                              \
 238                                                                         \
 239         s390_lr  (code, s390_r13, frame_reg);                           \
 240                                                                         \
 241         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 242                                                                         \
 243         /*-------------------------------------------------*/           \
 244         /* r13 = my lmf                                    */           \
 245         /*-------------------------------------------------*/           \
 246         s390_ahi (code, s390_r13, lmfOffset);                           \
 247                                                                         \
 248         /*-------------------------------------------------*/           \
 249         /* r6 = &jit_tls->lmf                              */           \
 250         /*-------------------------------------------------*/           \
 251         s390_l   (code, s390_r6, 0, s390_r13,                           \
 252                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 253                                                                         \
 254         /*-------------------------------------------------*/           \
 255         /* r0 = lmf.previous_lmf                           */           \
 256         /*-------------------------------------------------*/           \
 257         s390_l   (code, s390_r0, 0, s390_r13,                           \
 258                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 259                                                                         \
 260         /*-------------------------------------------------*/           \
 261         /* jit_tls->lmf = previous_lmf                     */           \
 262         /*-------------------------------------------------*/           \
 263         s390_l   (code, s390_r13, 0, s390_r6, 0);                       \
 264         s390_st  (code, s390_r0, 0, s390_r6, 0);                        \
 265 } while (0)
 266
 267 /*========================= End of Function ========================*/
 268
 269 #endif /* __MONO_MINI_S390_H__ */