mono/mini/mini-s390x.h

   1 /**
   2  * \file
   3  */
   4
   5 #ifndef __MONO_MINI_S390X_H__
   6 #define __MONO_MINI_S390X_H__
   7
   8 #include <mono/arch/s390x/s390x-codegen.h>
   9 #include <mono/utils/mono-context.h>
  10 #include <signal.h>
  11
  12 #define MONO_ARCH_CPU_SPEC mono_s390x_cpu_desc
  13
  14 #define MONO_MAX_IREGS 16
  15 #define MONO_MAX_FREGS 16
  16
  17 /*-------------------------------------------*/
  18 /* Parameters used by the register allocator */
  19 /*-------------------------------------------*/
  20
  21 struct MonoLMF {
  22         gpointer    previous_lmf;
  23         gpointer    lmf_addr;
  24         MonoMethod *method;
  25         gulong      ebp;
  26         gulong      eip;
  27         gulong      pregs[6];
  28         gulong      gregs[16];
  29         gdouble     fregs[16];
  30 };
  31
  32 typedef struct MonoCompileArch {
  33         int         bkchain_reg;
  34         uint32_t    used_fp_regs;
  35         int         fpSize;
  36 } MonoCompileArch;
  37
  38 typedef struct
  39 {
  40         void *prev;
  41         void *unused[5];
  42         void *regs[8];
  43         void *return_address;
  44 } MonoS390StackFrame;
  45
  46 // #define MONO_ARCH_SIGSEGV_ON_ALTSTACK                1
  47 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN                1
  48 #define MONO_ARCH_NO_EMULATE_LONG_MUL_OPTS              1
  49 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS             1
  50 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW                  1
  51 #define MONO_ARCH_NEED_DIV_CHECK                        1
  52 #define MONO_ARCH_SIGNAL_STACK_SIZE                     256*1024
  53 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS                   1
  54 #define MONO_ARCH_IMT_REG                               s390_r9
  55 #define MONO_ARCH_VTABLE_REG                            S390_FIRST_ARG_REG
  56 #define MONO_ARCH_RGCTX_REG                             MONO_ARCH_IMT_REG
  57 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX                1
  58 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED                  1
  59 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG              1
  60 #define MONO_ARCH_USE_SIGACTION                         1
  61 #define MONO_ARCH_GC_MAPS_SUPPORTED                     1
  62 #define MONO_ARCH_GSHARED_SUPPORTED                     1
  63 #define MONO_ARCH_MONITOR_ENTER_ADJUSTMENT              1
  64 #define MONO_ARCH_HAVE_INVALIDATE_METHOD                1
  65 #define MONO_ARCH_HAVE_OP_GENERIC_CLASS_INIT            1
  66 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK             1
  67 #define MONO_ARCH_HAVE_TRACK_FPREGS                     1
  68 #define MONO_ARCH_HAVE_OPTIMIZED_DIV                    1
  69
  70 #define S390_STACK_ALIGNMENT             8
  71 #define S390_FIRST_ARG_REG              s390_r2
  72 #define S390_LAST_ARG_REG               s390_r6
  73 #define S390_FIRST_FPARG_REG            s390_f0
  74 #define S390_LAST_FPARG_REG             s390_f6
  75
  76 #define S390_FP_SAVE_MASK               0xf0
  77
  78 /*===============================================*/
  79 /* Definitions used by mini-codegen.c            */
  80 /*===============================================*/
  81
  82 /*------------------------------------------------------*/
  83 /* use s390_r2-s390_r6 as parm registers                */
  84 /* s390_r0, s390_r1, s390_r12, s390_r13 used internally */
  85 /* s390_r8..s390_r10 are used for global regalloc       */
  86 /* -- except for s390_r9 which is used as IMT pointer   */
  87 /* s390_r11 is sometimes used as the frame pointer      */
  88 /* s390_r15 is the stack pointer                        */
  89 /*------------------------------------------------------*/
  90
  91 #define MONO_ARCH_CALLEE_REGS (0x00fc)
  92
  93 #define MONO_ARCH_CALLEE_SAVED_REGS 0xfd00
  94
  95 /*----------------------------------------*/
  96 /* use s390_f1/s390_f3-s390_f15 as temps  */
  97 /*----------------------------------------*/
  98
  99 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
 100
 101 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
 102
 103 #define MONO_ARCH_USE_FPSTACK FALSE
 104
 105 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 :               \
 106                                         ((desc == 'g') ? s390_f0 :              \
 107                                         ((desc == 'A') ? S390_FIRST_ARG_REG : -1)))
 108
 109 #define MONO_ARCH_INST_IS_FLOAT(desc)  ((desc == 'f') || (desc == 'g'))
 110
 111 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 112
 113 #define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
 114 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) -1
 115
 116 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
 117
 118 #define MONO_ARCH_FRAME_ALIGNMENT 8
 119 #define MONO_ARCH_CODE_ALIGNMENT 32
 120
 121 /*-----------------------------------------------*/
 122 /* SIMD Related Definitions                      */
 123 /*-----------------------------------------------*/
 124
 125 #define MONO_MAX_XREGS                  31
 126 #define MONO_ARCH_CALLEE_XREGS          0x0
 127 #define MONO_ARCH_CALLEE_SAVED_XREGS    0x0
 128
 129 // Does the ABI have a volatile non-parameter register, so tailcall
 130 // can pass context to generics or interfaces?
 131 #define MONO_ARCH_HAVE_VOLATILE_NON_PARAM_REGISTER 0 // FIXME?
 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_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 146                 MonoS390StackFrame *sframe;                             \
 147                 __asm__ volatile("lgr   %0,15" : "=r" (sframe));        \
 148                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 149                 MONO_CONTEXT_SET_SP ((ctx), sframe->prev);              \
 150                 MONO_CONTEXT_SET_IP ((ctx), func);                      \
 151         } while (0)
 152
 153 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
 154
 155 /*------------------------------------------------------------------*/
 156 /*                                                                  */
 157 /* Name         - s390_patch_rel                                    */
 158 /*                                                                  */
 159 /* Function     - Patch the code with a given offset.               */
 160 /*                                                                  */
 161 /*------------------------------------------------------------------*/
 162
 163 static void inline
 164 s390_patch_rel (guchar *code, guint64 target)
 165 {
 166         guint32 *offset = (guint32 *) code;
 167
 168         if (target != 0) {
 169                 *offset = (guint32) target;
 170         }
 171 }
 172
 173 /*========================= End of Function ========================*/
 174
 175 /*------------------------------------------------------------------*/
 176 /*                                                                  */
 177 /* Name         - s390_patch_addr                                   */
 178 /*                                                                  */
 179 /* Function     - Patch the code with a given address.              */
 180 /*                                                                  */
 181 /*------------------------------------------------------------------*/
 182
 183 static void inline
 184 s390_patch_addr (guchar *code, guint64 target)
 185 {
 186         guint64 *offset = (guint64 *) code;
 187
 188         if (target != 0) {
 189                 *offset = target;
 190         }
 191 }
 192
 193 /*========================= End of Function ========================*/
 194
 195 /*------------------------------------------------------------------*/
 196 /*                                                                  */
 197 /* Name         - restoreLMF                                        */
 198 /*                                                                  */
 199 /* Function     - Restore the LMF state prior to exiting a method.  */
 200 /*                                                                  */
 201 /*------------------------------------------------------------------*/
 202
 203 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 204 {                                                                       \
 205         int lmfOffset = 0;                                              \
 206                                                                         \
 207         s390_lgr (code, s390_r13, frame_reg);                           \
 208                                                                         \
 209         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 210                                                                         \
 211         /*-------------------------------------------------*/           \
 212         /* r13 = my lmf                                    */           \
 213         /*-------------------------------------------------*/           \
 214         s390_aghi (code, s390_r13, lmfOffset);                          \
 215                                                                         \
 216         /*-------------------------------------------------*/           \
 217         /* r6 = &jit_tls->lmf                              */           \
 218         /*-------------------------------------------------*/           \
 219         s390_lg  (code, s390_r6, 0, s390_r13,                           \
 220                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 221                                                                         \
 222         /*-------------------------------------------------*/           \
 223         /* r0 = lmf.previous_lmf                           */           \
 224         /*-------------------------------------------------*/           \
 225         s390_lg  (code, s390_r0, 0, s390_r13,                           \
 226                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 227                                                                         \
 228         /*-------------------------------------------------*/           \
 229         /* jit_tls->lmf = previous_lmf                     */           \
 230         /*-------------------------------------------------*/           \
 231         s390_lg  (code, s390_r13, 0, s390_r6, 0);                       \
 232         s390_stg (code, s390_r0, 0, s390_r6, 0);                        \
 233 } while (0)
 234
 235 /*========================= End of Function ========================*/
 236
 237 #endif /* __MONO_MINI_S390X_H__ */