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 <mono/utils/mono-context.h>
   6 #include <signal.h>
   7
   8 #define MONO_ARCH_CPU_SPEC s390x_cpu_desc
   9
  10 #define MONO_MAX_IREGS 16
  11 #define MONO_MAX_FREGS 16
  12
  13 /*-------------------------------------------*/
  14 /* Parameters used by the register allocator */
  15 /*-------------------------------------------*/
  16
  17 struct MonoLMF {
  18         gpointer    previous_lmf;
  19         gpointer    lmf_addr;
  20         MonoMethod *method;
  21         gulong      ebp;
  22         gulong      eip;
  23         gulong      pregs[6];
  24         gulong      gregs[16];
  25         gdouble     fregs[16];
  26 };
  27
  28 typedef struct MonoCompileArch {
  29         gpointer    litpool;
  30         glong       litsize;
  31         int         bkchain_reg;
  32 } MonoCompileArch;
  33
  34 typedef struct
  35 {
  36         void *prev;
  37         void *unused[5];
  38         void *regs[8];
  39         void *return_address;
  40 } MonoS390StackFrame;
  41
  42 // #define MONO_ARCH_SIGSEGV_ON_ALTSTACK                1
  43 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN                1
  44 #define MONO_ARCH_NO_EMULATE_LONG_MUL_OPTS              1
  45 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS             1
  46 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW                  1
  47 #define MONO_ARCH_NEED_DIV_CHECK                        1
  48 #define MONO_ARCH_SIGNAL_STACK_SIZE                     256*1024
  49 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS                   1
  50 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE       1
  51 #define MONO_ARCH_HAVE_TLS_GET                          1
  52 #define MONO_ARCH_ENABLE_MONO_LMF_VAR                   1
  53 #define MONO_ARCH_IMT_REG                               s390_r9
  54 #define MONO_ARCH_VTABLE_REG                            MONO_ARCH_IMT_REG
  55 #define MONO_ARCH_RGCTX_REG                             MONO_ARCH_IMT_REG
  56 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX                1
  57 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED                  1
  58 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG              1
  59 #define MONO_ARCH_USE_SIGACTION                         1
  60 #define MONO_ARCH_GC_MAPS_SUPPORTED                     1
  61 #define MONO_ARCH_GSHARED_SUPPORTED                     1
  62 #define MONO_ARCH_MONITOR_ENTER_ADJUSTMENT              1
  63 #define MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD              1
  64 #define MONO_ARCH_HAVE_INVALIDATE_METHOD                1
  65
  66 #define S390_STACK_ALIGNMENT             8
  67 #define S390_FIRST_ARG_REG              s390_r2
  68 #define S390_LAST_ARG_REG               s390_r6
  69 #define S390_FIRST_FPARG_REG            s390_f0
  70 #define S390_LAST_FPARG_REG             s390_f6
  71 #define S390_PASS_STRUCTS_BY_VALUE       1
  72 #define S390_SMALL_RET_STRUCT_IN_REG     1
  73
  74 #define S390_NUM_REG_ARGS (S390_LAST_ARG_REG-S390_FIRST_ARG_REG+1)
  75 #define S390_NUM_REG_FPARGS ((S390_LAST_FPARG_REG-S390_FIRST_FPARG_REG)/2)
  76
  77 /*===============================================*/
  78 /* Definitions used by mini-codegen.c            */
  79 /*===============================================*/
  80
  81 /*------------------------------------------------------*/
  82 /* use s390_r2-s390_r6 as parm registers                */
  83 /* s390_r0, s390_r1, s390_r12, s390_r13 used internally */
  84 /* s390_r8..s390_r11 are used for global regalloc       */
  85 /* s390_r15 is the stack pointer                        */
  86 /*------------------------------------------------------*/
  87
  88 #define MONO_ARCH_CALLEE_REGS (0xfc)
  89
  90 #define MONO_ARCH_CALLEE_SAVED_REGS 0xff80
  91
  92 /*----------------------------------------*/
  93 /* use s390_f1/s390_f3-s390_f15 as temps  */
  94 /*----------------------------------------*/
  95
  96 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
  97
  98 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
  99
 100 #define MONO_ARCH_USE_FPSTACK FALSE
 101 #define MONO_ARCH_FPSTACK_SIZE 0
 102
 103 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 :               \
 104                                         ((desc == 'g') ? s390_f0 : - 1))
 105
 106 #define MONO_ARCH_INST_IS_FLOAT(desc)  ((desc == 'f') || (desc == 'g'))
 107
 108 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 109
 110 #define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
 111 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) -1
 112
 113 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
 114
 115 #define MONO_ARCH_FRAME_ALIGNMENT 8
 116 #define MONO_ARCH_CODE_ALIGNMENT 32
 117
 118 #define MONO_ARCH_RETREG1 s390_r2
 119
 120 /*-----------------------------------------------*/
 121 /* Macros used to generate instructions          */
 122 /*-----------------------------------------------*/
 123 #define S390_OFFSET(b, t)       (guchar *) ((guint64) (b) - (guint64) (t))
 124 #define S390_RELATIVE(b, t)     (guchar *) ((((guint64) (b) - (guint64) (t))) / 2)
 125
 126 #define CODEPTR(c, o) (o) = (short *) ((guint64) c - 2)
 127 #define PTRSLOT(c, o) *(o) = (short) ((guint64) c - (guint64) (o) + 2)/2
 128
 129 #define S390_CC_EQ                      8
 130 #define S390_ALIGN(v, a)        (((a) > 0 ? (((v) + ((a) - 1)) & ~((a) - 1)) : (v)))
 131
 132 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 133                 MonoS390StackFrame *sframe;                             \
 134                 __asm__ volatile("lgr   %0,15" : "=r" (sframe));        \
 135                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 136                 MONO_CONTEXT_SET_SP ((ctx), sframe->prev);              \
 137                 MONO_CONTEXT_SET_IP ((ctx), func);                      \
 138         } while (0)
 139
 140 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
 141
 142 /*------------------------------------------------------------------*/
 143 /*                                                                  */
 144 /* Name         - s390_patch_rel                                    */
 145 /*                                                                  */
 146 /* Function     - Patch the code with a given offset.               */
 147 /*                                                                  */
 148 /*------------------------------------------------------------------*/
 149
 150 static void inline
 151 s390_patch_rel (guchar *code, guint64 target)
 152 {
 153         guint32 *offset = (guint32 *) code;
 154
 155         if (target != 0) {
 156                 *offset = (guint32) target;
 157         }
 158 }
 159
 160 /*========================= End of Function ========================*/
 161
 162 /*------------------------------------------------------------------*/
 163 /*                                                                  */
 164 /* Name         - s390_patch_addr                                   */
 165 /*                                                                  */
 166 /* Function     - Patch the code with a given address.              */
 167 /*                                                                  */
 168 /*------------------------------------------------------------------*/
 169
 170 static void inline
 171 s390_patch_addr (guchar *code, guint64 target)
 172 {
 173         guint64 *offset = (guint64 *) code;
 174
 175         if (target != 0) {
 176                 *offset = target;
 177         }
 178 }
 179
 180 /*========================= End of Function ========================*/
 181
 182 /*------------------------------------------------------------------*/
 183 /*                                                                  */
 184 /* Name         - restoreLMF                                        */
 185 /*                                                                  */
 186 /* Function     - Restore the LMF state prior to exiting a method.  */
 187 /*                                                                  */
 188 /*------------------------------------------------------------------*/
 189
 190 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 191 {                                                                       \
 192         int lmfOffset = 0;                                              \
 193                                                                         \
 194         s390_lgr (code, s390_r13, frame_reg);                           \
 195                                                                         \
 196         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 197                                                                         \
 198         /*-------------------------------------------------*/           \
 199         /* r13 = my lmf                                    */           \
 200         /*-------------------------------------------------*/           \
 201         s390_aghi (code, s390_r13, lmfOffset);                          \
 202                                                                         \
 203         /*-------------------------------------------------*/           \
 204         /* r6 = &jit_tls->lmf                              */           \
 205         /*-------------------------------------------------*/           \
 206         s390_lg  (code, s390_r6, 0, s390_r13,                           \
 207                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 208                                                                         \
 209         /*-------------------------------------------------*/           \
 210         /* r0 = lmf.previous_lmf                           */           \
 211         /*-------------------------------------------------*/           \
 212         s390_lg  (code, s390_r0, 0, s390_r13,                           \
 213                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 214                                                                         \
 215         /*-------------------------------------------------*/           \
 216         /* jit_tls->lmf = previous_lmf                     */           \
 217         /*-------------------------------------------------*/           \
 218         s390_lg  (code, s390_r13, 0, s390_r6, 0);                       \
 219         s390_stg (code, s390_r0, 0, s390_r6, 0);                        \
 220 } while (0)
 221
 222 /*========================= End of Function ========================*/
 223
 224 #endif /* __MONO_MINI_S390X_H__ */