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 // #define MONO_ARCH_SIGSEGV_ON_ALTSTACK                1
  67 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN        1
  68 #define MONO_ARCH_NO_EMULATE_LONG_MUL_OPTS      1
  69 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS     1
  70 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW          1
  71 #define MONO_ARCH_NEED_DIV_CHECK                1
  72 #define MONO_ARCH_HAVE_ATOMIC_ADD 1
  73 #define MONO_ARCH_HAVE_ATOMIC_EXCHANGE 1
  74 #define MONO_ARCH_SIGNAL_STACK_SIZE             256*1024
  75 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
  76 // #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION        1
  77
  78 #define MONO_ARCH_USE_SIGACTION         1
  79
  80 #define S390_STACK_ALIGNMENT             8
  81 #define S390_FIRST_ARG_REG              s390_r2
  82 #define S390_LAST_ARG_REG               s390_r6
  83 #define S390_FIRST_FPARG_REG            s390_f0
  84 #define S390_LAST_FPARG_REG             s390_f6
  85 #define S390_PASS_STRUCTS_BY_VALUE       1
  86 #define S390_SMALL_RET_STRUCT_IN_REG     1
  87
  88 #define S390_NUM_REG_ARGS (S390_LAST_ARG_REG-S390_FIRST_ARG_REG+1)
  89 #define S390_NUM_REG_FPARGS ((S390_LAST_FPARG_REG-S390_FIRST_FPARG_REG)/2)
  90
  91 /*===============================================*/
  92 /* Definitions used by mini-codegen.c            */
  93 /*===============================================*/
  94
  95 /*------------------------------------------------------*/
  96 /* use s390_r2-s390_r6 as parm registers                */
  97 /* s390_r0, s390_r1, s390_r12, s390_r13 used internally */
  98 /* s390_r8..s390_r11 are used for global regalloc       */
  99 /* s390_r15 is the stack pointer                        */
 100 /*------------------------------------------------------*/
 101 #define MONO_ARCH_CALLEE_REGS (0xfc)
 102
 103 #define MONO_ARCH_CALLEE_SAVED_REGS 0xff80
 104
 105 /*----------------------------------------*/
 106 /* use s390_f1/s390_f3-s390_f15 as temps  */
 107 /*----------------------------------------*/
 108
 109 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
 110
 111 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
 112
 113 #define MONO_ARCH_USE_FPSTACK FALSE
 114 #define MONO_ARCH_FPSTACK_SIZE 0
 115
 116 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 :               \
 117                                         ((desc == 'g') ? s390_f0 : - 1))
 118
 119 #define MONO_ARCH_INST_IS_FLOAT(desc)  ((desc == 'f') || (desc == 'g'))
 120
 121 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 122
 123 #define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
 124 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) -1
 125
 126 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
 127
 128 #define MONO_ARCH_FRAME_ALIGNMENT 8
 129 #define MONO_ARCH_CODE_ALIGNMENT 32
 130
 131 #define MONO_ARCH_RETREG1 s390_r2
 132
 133 /*-----------------------------------------------*/
 134 /* Macros used to generate instructions          */
 135 /*-----------------------------------------------*/
 136 #define S390_OFFSET(b, t)       (guchar *) ((guint64) (b) - (guint64) (t))
 137 #define S390_RELATIVE(b, t)     (guchar *) ((((guint64) (b) - (guint64) (t))) / 2)
 138
 139 #define CODEPTR(c, o) (o) = (short *) ((guint64) c - 2)
 140 #define PTRSLOT(c, o) *(o) = (short) ((guint64) c - (guint64) (o) + 2)/2
 141
 142 #define S390_CC_EQ                      8
 143 #define S390_ALIGN(v, a)        (((a) > 0 ? (((v) + ((a) - 1)) & ~((a) - 1)) : (v)))
 144
 145 #define MONO_CONTEXT_SET_IP(ctx,ip)                                     \
 146         do {                                                            \
 147                 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip;       \
 148                 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip;        \
 149         } while (0);
 150
 151 #define MONO_CONTEXT_SET_SP(ctx,bp) MONO_CONTEXT_SET_BP((ctx),(bp))
 152 #define MONO_CONTEXT_SET_BP(ctx,bp)                                     \
 153         do {                                                            \
 154                 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp;       \
 155                 (ctx)->uc_stack.ss_sp        = (void*)bp;               \
 156         } while (0)
 157
 158 #define MONO_CONTEXT_GET_IP(ctx) (gpointer) (ctx)->uc_mcontext.psw.addr
 159 #define MONO_CONTEXT_GET_BP(ctx) MONO_CONTEXT_GET_SP((ctx))
 160 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
 161
 162 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 163                 MonoS390StackFrame *sframe;                             \
 164                 __asm__ volatile("lgr   %0,15" : "=r" (sframe));        \
 165                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 166                 MONO_CONTEXT_SET_SP ((ctx), sframe->prev);              \
 167                 sframe = (MonoS390StackFrame*)sframe->prev;             \
 168                 MONO_CONTEXT_SET_IP ((ctx), sframe->return_address);    \
 169         } while (0)
 170
 171 /*------------------------------------------------------------------*/
 172 /*                                                                  */
 173 /* Name         - s390_patch_rel                                    */
 174 /*                                                                  */
 175 /* Function     - Patch the code with a given offset.               */
 176 /*                                                                  */
 177 /*------------------------------------------------------------------*/
 178
 179 static void inline
 180 s390_patch_rel (guchar *code, guint64 target)
 181 {
 182         guint32 *offset = (guint32 *) code;
 183
 184         if (target != 0) {
 185                 *offset = (guint32) target;
 186         }
 187 }
 188
 189 /*========================= End of Function ========================*/
 190
 191 /*------------------------------------------------------------------*/
 192 /*                                                                  */
 193 /* Name         - s390_patch_addr                                   */
 194 /*                                                                  */
 195 /* Function     - Patch the code with a given address.              */
 196 /*                                                                  */
 197 /*------------------------------------------------------------------*/
 198
 199 static void inline
 200 s390_patch_addr (guchar *code, guint64 target)
 201 {
 202         guint64 *offset = (guint64 *) code;
 203
 204         if (target != 0) {
 205                 *offset = target;
 206         }
 207 }
 208
 209 /*========================= End of Function ========================*/
 210
 211 /*------------------------------------------------------------------*/
 212 /*                                                                  */
 213 /* Name         - restoreLMF                                        */
 214 /*                                                                  */
 215 /* Function     - Restore the LMF state prior to exiting a method.  */
 216 /*                                                                  */
 217 /*------------------------------------------------------------------*/
 218
 219 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 220 {                                                                       \
 221         int lmfOffset = 0;                                              \
 222                                                                         \
 223         s390_lgr (code, s390_r13, frame_reg);                           \
 224                                                                         \
 225         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 226                                                                         \
 227         /*-------------------------------------------------*/           \
 228         /* r13 = my lmf                                    */           \
 229         /*-------------------------------------------------*/           \
 230         s390_aghi (code, s390_r13, lmfOffset);                          \
 231                                                                         \
 232         /*-------------------------------------------------*/           \
 233         /* r6 = &jit_tls->lmf                              */           \
 234         /*-------------------------------------------------*/           \
 235         s390_lg  (code, s390_r6, 0, s390_r13,                           \
 236                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 237                                                                         \
 238         /*-------------------------------------------------*/           \
 239         /* r0 = lmf.previous_lmf                           */           \
 240         /*-------------------------------------------------*/           \
 241         s390_lg  (code, s390_r0, 0, s390_r13,                           \
 242                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 243                                                                         \
 244         /*-------------------------------------------------*/           \
 245         /* jit_tls->lmf = previous_lmf                     */           \
 246         /*-------------------------------------------------*/           \
 247         s390_lg  (code, s390_r13, 0, s390_r6, 0);                       \
 248         s390_stg (code, s390_r0, 0, s390_r6, 0);                        \
 249 } while (0)
 250
 251 /*========================= End of Function ========================*/
 252
 253 #endif /* __MONO_MINI_S390X_H__ */