mono/mini/mini-s390.h

   1 #ifndef __MONO_MINI_S390_H__
   2 #define __MONO_MINI_S390_H__
   3
   4 #include <mono/arch/s390/s390-codegen.h>
   5 #include <signal.h>
   6
   7 #define MONO_ARCH_CPU_SPEC s390_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 struct MonoLMF {
  17         gpointer    previous_lmf;
  18         gpointer    lmf_addr;
  19         MonoMethod *method;
  20         gulong      ebp;
  21         gulong      eip;
  22         gulong      pregs[6];
  23         gulong      gregs[16];
  24         gdouble     fregs[16];
  25 };
  26
  27 typedef struct ucontext MonoContext;
  28
  29 typedef struct MonoCompileArch {
  30         int bkchain_reg;
  31 } MonoCompileArch;
  32
  33 typedef struct
  34 {
  35         void *prev;
  36         void *unused[5];
  37         void *regs[8];
  38         void *return_address;
  39 } MonoS390StackFrame;
  40
  41 typedef struct
  42 {
  43         gint32  size;
  44         gint32  offset;
  45         gint32  offPrm;
  46 } MonoS390ArgParm;
  47
  48 #define MONO_ARCH_EMULATE_FCONV_TO_I8           1
  49 #define MONO_ARCH_EMULATE_LCONV_TO_R8           1
  50 #define MONO_ARCH_EMULATE_LCONV_TO_R4           1
  51 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN        1
  52 #define MONO_ARCH_EMULATE_LMUL                  1
  53 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW          1
  54 #define MONO_ARCH_NEED_DIV_CHECK                1
  55 #define MONO_ARCH_HAVE_ATOMIC_ADD 1
  56 #define MONO_ARCH_HAVE_ATOMIC_EXCHANGE 1
  57 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
  58 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
  59 // #define MONO_ARCH_SIGSEGV_ON_ALTSTACK                1
  60 // #define MONO_ARCH_SIGNAL_STACK_SIZE          65536
  61 // #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION        1
  62
  63 #define MONO_ARCH_USE_SIGACTION         1
  64
  65 #define S390_STACK_ALIGNMENT             8
  66 #define S390_FIRST_ARG_REG              s390_r2
  67 #define S390_LAST_ARG_REG               s390_r6
  68 #define S390_FIRST_FPARG_REG            s390_f0
  69 #define S390_LAST_FPARG_REG             s390_f2
  70 #define S390_PASS_STRUCTS_BY_VALUE       1
  71 #define S390_SMALL_RET_STRUCT_IN_REG     1
  72
  73 #define S390_NUM_REG_ARGS (S390_LAST_ARG_REG-S390_FIRST_ARG_REG+1)
  74 #define S390_NUM_REG_FPARGS (S390_LAST_FPARG_REG-S390_FIRST_FPARG_REG)
  75
  76 /*===============================================*/
  77 /* Definitions used by mini-codegen.c            */
  78 /*===============================================*/
  79
  80 /*-----------------------------------------------------*/
  81 /* use s390_r2-s390_r6 as parm registers               */
  82 /* s390_r0, s390_r1, s390_r12, s390_r13 used internally*/
  83 /* s390_r8..s390_r11 are used for global regalloc      */
  84 /* s390_r15 is the stack pointer                       */
  85 /*-----------------------------------------------------*/
  86 #define MONO_ARCH_CALLEE_REGS (0xfc)
  87
  88 #define MONO_ARCH_CALLEE_SAVED_REGS 0xff80
  89
  90 /*----------------------------------------*/
  91 /* use s390_f1/s390_f3-s390_f15 as temps  */
  92 /*----------------------------------------*/
  93
  94 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
  95
  96 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
  97
  98 #define MONO_ARCH_USE_FPSTACK FALSE
  99 #define MONO_ARCH_FPSTACK_SIZE 0
 100
 101 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 :               \
 102                                         ((desc == 'L') ? s390_r3 :              \
 103                                         ((desc == 'g') ? s390_f0 : - 1)))
 104
 105 #define MONO_ARCH_INST_IS_FLOAT(desc)  ((desc == 'f') || (desc == 'g'))
 106
 107 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 108
 109 #define MONO_ARCH_INST_IS_REGPAIR(desc) ((desc == 'l') || (desc == 'L'))
 110 //#define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
 111 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) ((desc == 'l') ? (hr + 1) :        \
 112                                               ((desc == 'L') ? s390_r2 : -1))
 113
 114 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
 115
 116 #define MONO_ARCH_FRAME_ALIGNMENT 4
 117 #define MONO_ARCH_CODE_ALIGNMENT 32
 118
 119 #define MONO_ARCH_RETREG1 s390_r2
 120
 121 /*-----------------------------------------------*/
 122 /* Macros used to generate instructions          */
 123 /*-----------------------------------------------*/
 124 #define S390_OFFSET(b, t)       (guchar *) ((gint32) (b) - (gint32) (t))
 125 #define S390_RELATIVE(b, t)     (guchar *) ((((gint32) (b) - (gint32) (t))) / 2)
 126
 127 #define CODEPTR(c, o) (o) = (short *) ((guint32) c - 2)
 128 #define PTRSLOT(c, o) *(o) = (short) ((guint32) c - (guint32) (o) + 2)/2
 129
 130 #define S390_CC_EQ                      8
 131 #define S390_ALIGN(v, a)        (((a) > 0 ? (((v) + ((a) - 1)) & ~((a) - 1)) : (v)))
 132
 133 #define MONO_CONTEXT_SET_IP(ctx,ip)                                     \
 134         do {                                                            \
 135                 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip;       \
 136                 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip;        \
 137         } while (0);
 138
 139 #define MONO_CONTEXT_SET_SP(ctx,bp) MONO_CONTEXT_SET_BP((ctx),(bp))
 140 #define MONO_CONTEXT_SET_BP(ctx,bp)                                     \
 141         do {                                                            \
 142                 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp;       \
 143                 (ctx)->uc_stack.ss_sp        = (void*)bp;       \
 144         } while (0);
 145
 146 #define MONO_CONTEXT_GET_IP(ctx) context_get_ip ((ctx))
 147 #define MONO_CONTEXT_GET_BP(ctx) MONO_CONTEXT_GET_SP((ctx))
 148 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
 149
 150 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 151                 MonoS390StackFrame *sframe;                             \
 152                 __asm__ volatile("lr    %0,15" : "=r" (sframe));        \
 153                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 154                 MONO_CONTEXT_SET_SP ((ctx), sframe->prev);              \
 155                 sframe = (MonoS390StackFrame*)sframe->prev;             \
 156                 MONO_CONTEXT_SET_IP ((ctx), sframe->return_address);    \
 157         } while (0)
 158
 159 /*------------------------------------------------------------------*/
 160 /*                                                                  */
 161 /* Name         - context_get_ip                                    */
 162 /*                                                                  */
 163 /* Function     - Extract the current instruction address from the  */
 164 /*                context.                                          */
 165 /*                                                                  */
 166 /*------------------------------------------------------------------*/
 167
 168 static inline gpointer
 169 context_get_ip (MonoContext *ctx)
 170 {
 171         gpointer ip;
 172
 173         ip = (gpointer) ((gint32) (ctx->uc_mcontext.psw.addr) & 0x7fffffff);
 174         return ip;
 175 }
 176
 177 /*========================= End of Function ========================*/
 178
 179 /*------------------------------------------------------------------*/
 180 /*                                                                  */
 181 /* Name         - s390_patch                                        */
 182 /*                                                                  */
 183 /* Function     - Patch the code with a given value.                */
 184 /*                                                                  */
 185 /*------------------------------------------------------------------*/
 186
 187 static void inline
 188 s390_patch (guchar *code, gint32 target)
 189 {
 190         gint32 *offset = (gint32 *) code;
 191
 192         if (target != 00) {
 193                 *offset = target;
 194         }
 195 }
 196
 197 /*========================= End of Function ========================*/
 198
 199 /*------------------------------------------------------------------*/
 200 /*                                                                  */
 201 /* Name         - restoreLMF                                        */
 202 /*                                                                  */
 203 /* Function     - Restore the LMF state prior to exiting a method.  */
 204 /*                                                                  */
 205 /*------------------------------------------------------------------*/
 206
 207 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 208 {                                                                       \
 209         int lmfOffset = 0;                                              \
 210                                                                         \
 211         s390_lr  (code, s390_r13, frame_reg);                           \
 212                                                                         \
 213         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 214                                                                         \
 215         /*-------------------------------------------------*/           \
 216         /* r13 = my lmf                                    */           \
 217         /*-------------------------------------------------*/           \
 218         s390_ahi (code, s390_r13, lmfOffset);                           \
 219                                                                         \
 220         /*-------------------------------------------------*/           \
 221         /* r6 = &jit_tls->lmf                              */           \
 222         /*-------------------------------------------------*/           \
 223         s390_l   (code, s390_r6, 0, s390_r13,                           \
 224                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 225                                                                         \
 226         /*-------------------------------------------------*/           \
 227         /* r0 = lmf.previous_lmf                           */           \
 228         /*-------------------------------------------------*/           \
 229         s390_l   (code, s390_r0, 0, s390_r13,                           \
 230                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 231                                                                         \
 232         /*-------------------------------------------------*/           \
 233         /* jit_tls->lmf = previous_lmf                     */           \
 234         /*-------------------------------------------------*/           \
 235         s390_l   (code, s390_r13, 0, s390_r6, 0);                       \
 236         s390_st  (code, s390_r0, 0, s390_r6, 0);                        \
 237 } while (0)
 238
 239 /*========================= End of Function ========================*/
 240
 241 #endif /* __MONO_MINI_S390_H__ */