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 S390_LONG(loc, opy, op, r, ix, br, off)                                 \
  17         if (has_ld) {                                                           \
  18                 if (s390_is_imm20(off)) {                                       \
  19                         s390_##opy (loc, r, ix, br, off);                       \
  20                 } else {                                                        \
  21                         s390_basr (code, s390_r13, 0);                          \
  22                         s390_j    (code, 6);                                    \
  23                         s390_llong(code, off);                                  \
  24                         s390_lg   (code, s390_r13, 0, s390_r13, 4);             \
  25                         s390_##op (code, r, s390_r13, br, 0);                   \
  26                 }                                                               \
  27         } else {                                                                \
  28                 if (s390_is_uimm12(off)) {                                      \
  29                         s390_##op (loc, r, ix, br, off);                        \
  30                 } else {                                                        \
  31                         s390_basr (code, s390_r13, 0);                          \
  32                         s390_j    (code, 6);                                    \
  33                         s390_llong(code, off);                                  \
  34                         s390_lg   (code, s390_r13, 0, s390_r13, 4);             \
  35                         s390_##op (code, r, s390_r13, br, 0);                   \
  36                 }                                                               \
  37         }
  38
  39 struct MonoLMF {
  40         gpointer    previous_lmf;
  41         gpointer    lmf_addr;
  42         MonoMethod *method;
  43         gulong      ebp;
  44         gulong      eip;
  45         gulong      pregs[6];
  46         gulong      gregs[16];
  47         gdouble     fregs[16];
  48 };
  49
  50 typedef struct ucontext MonoContext;
  51
  52 typedef struct MonoCompileArch {
  53         gpointer    litpool;
  54         glong       litsize;
  55         int         bkchain_reg;
  56 } MonoCompileArch;
  57
  58 typedef struct
  59 {
  60         void *prev;
  61         void *unused[5];
  62         void *regs[8];
  63         void *return_address;
  64 } MonoS390StackFrame;
  65
  66 typedef struct
  67 {
  68         char    n3:1;           // N3 instructions present
  69         char    zArch:1;        // z/Architecture mode installed
  70         char    zAct:1;         // z/Architecture mode active
  71         char    date:1;         // DATE enhancement facility
  72         char    idte1:1;        // IDTE present (PST)
  73         char    idte2:1;        // IDTE present (REG)
  74         char    asnlx:1;        // ASN and LX reuse facility
  75         char    stfle:1;        // STFLE installed
  76         char    zDATe:1;        // Enhanced DAT in z mode
  77         char    srstat:1;       // Sense running status facility
  78         char    cSSKE:1;        // Conditional SSKE facility
  79         char    topo:1;         // COnfiguration topology facility
  80         char    xTrans2:1;      // Extended translation facility 2
  81         char    msgSec:1;       // Message security facility
  82         char    longDsp:1;      // Long displacement facility
  83         char    hiPerfLD:1;     // High performance long displacement facility
  84         char    hfpMAS:1;       // HFP multiply-and-add/subtrace facility
  85         char    xImm:1;         // Extended immediate facility
  86         char    xTrans3:1;      // Extended translation facility 3
  87         char    hfpUnX:1;       // HFP unnormalized extension facility
  88         char    etf2:1;         // ETF2-enhancement facility
  89         char    stckf:1;        // Store-clock-fast facility
  90         char    parse:1;        // Parsing enhancement facility
  91         char    mvcos:1;        // MVCOS facility
  92         char    todSteer:1;     // TOD-clock steering facility
  93         char    etf3:1;         // ETF3-enhancement facility
  94         char    xCPUtm:1;       // Extract CPU time facility
  95         char    csst:1;         // Compare-swap-and-store facility
  96         char    csst2:1;        // Compare-swap-and-store facility 2
  97         char    giX:1;          // General instructions extension facility
  98         char    exX:1;          // Execute extensions facility
  99         char    ibm:1;          // IBM internal use
 100         char    fps:1;          // Floating point support enhancement
 101         char    dfp:1;          // Decimal floating point facility
 102         char    hiDFP:1;        // High Performance DFP facility
 103         char    pfpo:1;         // PFPO instruction facility
 104 } __attribute__((aligned(8))) facilityList_t;
 105
 106 // #define MONO_ARCH_SIGSEGV_ON_ALTSTACK                1
 107 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN                1
 108 #define MONO_ARCH_NO_EMULATE_LONG_MUL_OPTS              1
 109 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS             1
 110 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW                  1
 111 #define MONO_ARCH_NEED_DIV_CHECK                        1
 112 #define MONO_ARCH_HAVE_ATOMIC_ADD                       1
 113 #define MONO_ARCH_HAVE_ATOMIC_EXCHANGE                  1
 114 #define MONO_ARCH_SIGNAL_STACK_SIZE                     256*1024
 115 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS                   1
 116 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE       1
 117 #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION           1
 118 #define MONO_ARCH_HAVE_IMT                              1
 119 #define MONO_ARCH_IMT_REG                               s390_r9
 120 #define MONO_ARCH_THIS_AS_FIRST_ARG                     1
 121
 122 #define MONO_ARCH_USE_SIGACTION         1
 123
 124 #define S390_STACK_ALIGNMENT             8
 125 #define S390_FIRST_ARG_REG              s390_r2
 126 #define S390_LAST_ARG_REG               s390_r6
 127 #define S390_FIRST_FPARG_REG            s390_f0
 128 #define S390_LAST_FPARG_REG             s390_f6
 129 #define S390_PASS_STRUCTS_BY_VALUE       1
 130 #define S390_SMALL_RET_STRUCT_IN_REG     1
 131
 132 #define S390_NUM_REG_ARGS (S390_LAST_ARG_REG-S390_FIRST_ARG_REG+1)
 133 #define S390_NUM_REG_FPARGS ((S390_LAST_FPARG_REG-S390_FIRST_FPARG_REG)/2)
 134
 135 /*===============================================*/
 136 /* Definitions used by mini-codegen.c            */
 137 /*===============================================*/
 138
 139 /*------------------------------------------------------*/
 140 /* use s390_r2-s390_r6 as parm registers                */
 141 /* s390_r0, s390_r1, s390_r12, s390_r13 used internally */
 142 /* s390_r8..s390_r11 are used for global regalloc       */
 143 /* s390_r15 is the stack pointer                        */
 144 /*------------------------------------------------------*/
 145
 146 #define MONO_ARCH_CALLEE_REGS (0xfc)
 147
 148 #define MONO_ARCH_CALLEE_SAVED_REGS 0xff80
 149
 150 /*----------------------------------------*/
 151 /* use s390_f1/s390_f3-s390_f15 as temps  */
 152 /*----------------------------------------*/
 153
 154 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
 155
 156 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
 157
 158 #define MONO_ARCH_USE_FPSTACK FALSE
 159 #define MONO_ARCH_FPSTACK_SIZE 0
 160
 161 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 :               \
 162                                         ((desc == 'g') ? s390_f0 : - 1))
 163
 164 #define MONO_ARCH_INST_IS_FLOAT(desc)  ((desc == 'f') || (desc == 'g'))
 165
 166 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 167
 168 #define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
 169 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) -1
 170
 171 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
 172
 173 #define MONO_ARCH_FRAME_ALIGNMENT 8
 174 #define MONO_ARCH_CODE_ALIGNMENT 32
 175
 176 #define MONO_ARCH_RETREG1 s390_r2
 177
 178 /*-----------------------------------------------*/
 179 /* Macros used to generate instructions          */
 180 /*-----------------------------------------------*/
 181 #define S390_OFFSET(b, t)       (guchar *) ((guint64) (b) - (guint64) (t))
 182 #define S390_RELATIVE(b, t)     (guchar *) ((((guint64) (b) - (guint64) (t))) / 2)
 183
 184 #define CODEPTR(c, o) (o) = (short *) ((guint64) c - 2)
 185 #define PTRSLOT(c, o) *(o) = (short) ((guint64) c - (guint64) (o) + 2)/2
 186
 187 #define S390_CC_EQ                      8
 188 #define S390_ALIGN(v, a)        (((a) > 0 ? (((v) + ((a) - 1)) & ~((a) - 1)) : (v)))
 189
 190 #define MONO_CONTEXT_SET_IP(ctx,ip)                                     \
 191         do {                                                            \
 192                 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip;       \
 193                 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip;        \
 194         } while (0);
 195
 196 #define MONO_CONTEXT_SET_SP(ctx,bp) MONO_CONTEXT_SET_BP((ctx),(bp))
 197 #define MONO_CONTEXT_SET_BP(ctx,bp)                                     \
 198         do {                                                            \
 199                 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp;       \
 200                 (ctx)->uc_stack.ss_sp        = (void*)bp;               \
 201         } while (0)
 202
 203 #define MONO_CONTEXT_GET_IP(ctx) (gpointer) (ctx)->uc_mcontext.psw.addr
 204 #define MONO_CONTEXT_GET_BP(ctx) MONO_CONTEXT_GET_SP((ctx))
 205 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
 206
 207 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 208                 MonoS390StackFrame *sframe;                             \
 209                 __asm__ volatile("lgr   %0,15" : "=r" (sframe));        \
 210                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 211                 MONO_CONTEXT_SET_SP ((ctx), sframe->prev);              \
 212                 sframe = (MonoS390StackFrame*)sframe->prev;             \
 213                 MONO_CONTEXT_SET_IP ((ctx), sframe->return_address);    \
 214         } while (0)
 215
 216 /*------------------------------------------------------------------*/
 217 /*                                                                  */
 218 /* Name         - s390_patch_rel                                    */
 219 /*                                                                  */
 220 /* Function     - Patch the code with a given offset.               */
 221 /*                                                                  */
 222 /*------------------------------------------------------------------*/
 223
 224 static void inline
 225 s390_patch_rel (guchar *code, guint64 target)
 226 {
 227         guint32 *offset = (guint32 *) code;
 228
 229         if (target != 0) {
 230                 *offset = (guint32) target;
 231         }
 232 }
 233
 234 /*========================= End of Function ========================*/
 235
 236 /*------------------------------------------------------------------*/
 237 /*                                                                  */
 238 /* Name         - s390_patch_addr                                   */
 239 /*                                                                  */
 240 /* Function     - Patch the code with a given address.              */
 241 /*                                                                  */
 242 /*------------------------------------------------------------------*/
 243
 244 static void inline
 245 s390_patch_addr (guchar *code, guint64 target)
 246 {
 247         guint64 *offset = (guint64 *) code;
 248
 249         if (target != 0) {
 250                 *offset = target;
 251         }
 252 }
 253
 254 /*========================= End of Function ========================*/
 255
 256 /*------------------------------------------------------------------*/
 257 /*                                                                  */
 258 /* Name         - restoreLMF                                        */
 259 /*                                                                  */
 260 /* Function     - Restore the LMF state prior to exiting a method.  */
 261 /*                                                                  */
 262 /*------------------------------------------------------------------*/
 263
 264 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 265 {                                                                       \
 266         int lmfOffset = 0;                                              \
 267                                                                         \
 268         s390_lgr (code, s390_r13, frame_reg);                           \
 269                                                                         \
 270         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 271                                                                         \
 272         /*-------------------------------------------------*/           \
 273         /* r13 = my lmf                                    */           \
 274         /*-------------------------------------------------*/           \
 275         s390_aghi (code, s390_r13, lmfOffset);                          \
 276                                                                         \
 277         /*-------------------------------------------------*/           \
 278         /* r6 = &jit_tls->lmf                              */           \
 279         /*-------------------------------------------------*/           \
 280         s390_lg  (code, s390_r6, 0, s390_r13,                           \
 281                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 282                                                                         \
 283         /*-------------------------------------------------*/           \
 284         /* r0 = lmf.previous_lmf                           */           \
 285         /*-------------------------------------------------*/           \
 286         s390_lg  (code, s390_r0, 0, s390_r13,                           \
 287                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 288                                                                         \
 289         /*-------------------------------------------------*/           \
 290         /* jit_tls->lmf = previous_lmf                     */           \
 291         /*-------------------------------------------------*/           \
 292         s390_lg  (code, s390_r13, 0, s390_r6, 0);                       \
 293         s390_stg (code, s390_r0, 0, s390_r6, 0);                        \
 294 } while (0)
 295
 296 /*========================= End of Function ========================*/
 297
 298 #endif /* __MONO_MINI_S390X_H__ */