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
  72 /*===============================================*/
  73 /* Definitions used by mini-codegen.c            */
  74 /*===============================================*/
  75
  76 /*------------------------------------------------------*/
  77 /* use s390_r2-s390_r6 as parm registers                */
  78 /* s390_r0, s390_r1, s390_r12, s390_r13 used internally */
  79 /* s390_r8..s390_r11 are used for global regalloc       */
  80 /* s390_r15 is the stack pointer                        */
  81 /*------------------------------------------------------*/
  82
  83 #define MONO_ARCH_CALLEE_REGS (0xfc)
  84
  85 #define MONO_ARCH_CALLEE_SAVED_REGS 0xff80
  86
  87 /*----------------------------------------*/
  88 /* use s390_f1/s390_f3-s390_f15 as temps  */
  89 /*----------------------------------------*/
  90
  91 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
  92
  93 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
  94
  95 #define MONO_ARCH_USE_FPSTACK FALSE
  96 #define MONO_ARCH_FPSTACK_SIZE 0
  97
  98 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 :               \
  99                                         ((desc == 'g') ? s390_f0 : - 1))
 100
 101 #define MONO_ARCH_INST_IS_FLOAT(desc)  ((desc == 'f') || (desc == 'g'))
 102
 103 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 104
 105 #define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
 106 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) -1
 107
 108 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
 109
 110 #define MONO_ARCH_FRAME_ALIGNMENT 8
 111 #define MONO_ARCH_CODE_ALIGNMENT 32
 112
 113 /*-----------------------------------------------*/
 114 /* Macros used to generate instructions          */
 115 /*-----------------------------------------------*/
 116 #define S390_OFFSET(b, t)       (guchar *) ((guint64) (b) - (guint64) (t))
 117 #define S390_RELATIVE(b, t)     (guchar *) ((((guint64) (b) - (guint64) (t))) / 2)
 118
 119 #define CODEPTR(c, o) (o) = (short *) ((guint64) c - 2)
 120 #define PTRSLOT(c, o) *(o) = (short) ((guint64) c - (guint64) (o) + 2)/2
 121
 122 #define S390_CC_EQ                      8
 123 #define S390_ALIGN(v, a)        (((a) > 0 ? (((v) + ((a) - 1)) & ~((a) - 1)) : (v)))
 124
 125 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 126                 MonoS390StackFrame *sframe;                             \
 127                 __asm__ volatile("lgr   %0,15" : "=r" (sframe));        \
 128                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 129                 MONO_CONTEXT_SET_SP ((ctx), sframe->prev);              \
 130                 MONO_CONTEXT_SET_IP ((ctx), func);                      \
 131         } while (0)
 132
 133 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
 134
 135 /*------------------------------------------------------------------*/
 136 /*                                                                  */
 137 /* Name         - s390_patch_rel                                    */
 138 /*                                                                  */
 139 /* Function     - Patch the code with a given offset.               */
 140 /*                                                                  */
 141 /*------------------------------------------------------------------*/
 142
 143 static void inline
 144 s390_patch_rel (guchar *code, guint64 target)
 145 {
 146         guint32 *offset = (guint32 *) code;
 147
 148         if (target != 0) {
 149                 *offset = (guint32) target;
 150         }
 151 }
 152
 153 /*========================= End of Function ========================*/
 154
 155 /*------------------------------------------------------------------*/
 156 /*                                                                  */
 157 /* Name         - s390_patch_addr                                   */
 158 /*                                                                  */
 159 /* Function     - Patch the code with a given address.              */
 160 /*                                                                  */
 161 /*------------------------------------------------------------------*/
 162
 163 static void inline
 164 s390_patch_addr (guchar *code, guint64 target)
 165 {
 166         guint64 *offset = (guint64 *) code;
 167
 168         if (target != 0) {
 169                 *offset = target;
 170         }
 171 }
 172
 173 /*========================= End of Function ========================*/
 174
 175 /*------------------------------------------------------------------*/
 176 /*                                                                  */
 177 /* Name         - restoreLMF                                        */
 178 /*                                                                  */
 179 /* Function     - Restore the LMF state prior to exiting a method.  */
 180 /*                                                                  */
 181 /*------------------------------------------------------------------*/
 182
 183 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 184 {                                                                       \
 185         int lmfOffset = 0;                                              \
 186                                                                         \
 187         s390_lgr (code, s390_r13, frame_reg);                           \
 188                                                                         \
 189         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 190                                                                         \
 191         /*-------------------------------------------------*/           \
 192         /* r13 = my lmf                                    */           \
 193         /*-------------------------------------------------*/           \
 194         s390_aghi (code, s390_r13, lmfOffset);                          \
 195                                                                         \
 196         /*-------------------------------------------------*/           \
 197         /* r6 = &jit_tls->lmf                              */           \
 198         /*-------------------------------------------------*/           \
 199         s390_lg  (code, s390_r6, 0, s390_r13,                           \
 200                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 201                                                                         \
 202         /*-------------------------------------------------*/           \
 203         /* r0 = lmf.previous_lmf                           */           \
 204         /*-------------------------------------------------*/           \
 205         s390_lg  (code, s390_r0, 0, s390_r13,                           \
 206                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 207                                                                         \
 208         /*-------------------------------------------------*/           \
 209         /* jit_tls->lmf = previous_lmf                     */           \
 210         /*-------------------------------------------------*/           \
 211         s390_lg  (code, s390_r13, 0, s390_r6, 0);                       \
 212         s390_stg (code, s390_r0, 0, s390_r6, 0);                        \
 213 } while (0)
 214
 215 /*========================= End of Function ========================*/
 216
 217 #endif /* __MONO_MINI_S390X_H__ */