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
  62 #define MONO_ARCH_USE_SIGACTION         1
  63
  64 #define S390_STACK_ALIGNMENT             8
  65 #define S390_FIRST_ARG_REG              s390_r2
  66 #define S390_LAST_ARG_REG               s390_r6
  67 #define S390_FIRST_FPARG_REG            s390_f0
  68 #define S390_LAST_FPARG_REG             s390_f2
  69 #define S390_PASS_STRUCTS_BY_VALUE       1
  70 #define S390_SMALL_RET_STRUCT_IN_REG     1
  71
  72 #define S390_NUM_REG_ARGS (S390_LAST_ARG_REG-S390_FIRST_ARG_REG+1)
  73 #define S390_NUM_REG_FPARGS (S390_LAST_FPARG_REG-S390_FIRST_FPARG_REG)
  74
  75 /*===============================================*/
  76 /* Definitions used by mini-codegen.c            */
  77 /*===============================================*/
  78
  79 /*-----------------------------------------------------*/
  80 /* use s390_r2-s390_r6 as parm registers               */
  81 /* s390_r0, s390_r1, s390_r12, s390_r13 used internally*/
  82 /* s390_r8..s390_r11 are used for global regalloc      */
  83 /* s390_r15 is the stack pointer                       */
  84 /*-----------------------------------------------------*/
  85 #define MONO_ARCH_CALLEE_REGS (0xfc)
  86
  87 #define MONO_ARCH_CALLEE_SAVED_REGS 0xff80
  88
  89 /*----------------------------------------*/
  90 /* use s390_f1/s390_f3-s390_f15 as temps  */
  91 /*----------------------------------------*/
  92
  93 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
  94
  95 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
  96
  97 #define MONO_ARCH_USE_FPSTACK FALSE
  98 #define MONO_ARCH_FPSTACK_SIZE 0
  99
 100 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 :               \
 101                                         ((desc == 'L') ? s390_r3 :              \
 102                                         ((desc == 'g') ? s390_f0 : - 1)))
 103
 104 #define MONO_ARCH_INST_IS_FLOAT(desc)  ((desc == 'f') || (desc == 'g'))
 105
 106 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 107
 108 #define MONO_ARCH_INST_IS_REGPAIR(desc) ((desc == 'l') || (desc == 'L'))
 109 //#define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
 110 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) ((desc == 'l') ? (hr + 1) :        \
 111                                               ((desc == 'L') ? s390_r2 : -1))
 112
 113 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
 114
 115 #define MONO_ARCH_FRAME_ALIGNMENT 4
 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 *) ((gint32) (b) - (gint32) (t))
 124 #define S390_RELATIVE(b, t)     (guchar *) ((((gint32) (b) - (gint32) (t))) / 2)
 125
 126 #define CODEPTR(c, o) (o) = (short *) ((guint32) c - 2)
 127 #define PTRSLOT(c, o) *(o) = (short) ((guint32) c - (guint32) (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_CONTEXT_SET_IP(ctx,ip)                                     \
 133         do {                                                            \
 134                 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip;       \
 135                 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip;        \
 136         } while (0);
 137
 138 #define MONO_CONTEXT_SET_SP(ctx,bp) MONO_CONTEXT_SET_BP((ctx),(bp))
 139 #define MONO_CONTEXT_SET_BP(ctx,bp)                                     \
 140         do {                                                            \
 141                 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp;       \
 142                 (ctx)->uc_stack.ss_sp        = (void*)bp;       \
 143         } while (0);
 144
 145 #define MONO_CONTEXT_GET_IP(ctx) context_get_ip ((ctx))
 146 #define MONO_CONTEXT_GET_BP(ctx) MONO_CONTEXT_GET_SP((ctx))
 147 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
 148
 149 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {                      \
 150                 MonoS390StackFrame *sframe;                             \
 151                 __asm__ volatile("lr    %0,15" : "=r" (sframe));        \
 152                 MONO_CONTEXT_SET_BP ((ctx), sframe->prev);              \
 153                 MONO_CONTEXT_SET_SP ((ctx), sframe->prev);              \
 154                 sframe = (MonoS390StackFrame*)sframe->prev;             \
 155                 MONO_CONTEXT_SET_IP ((ctx), sframe->return_address);    \
 156         } while (0)
 157
 158 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
 159
 160 /*------------------------------------------------------------------*/
 161 /*                                                                  */
 162 /* Name         - context_get_ip                                    */
 163 /*                                                                  */
 164 /* Function     - Extract the current instruction address from the  */
 165 /*                context.                                          */
 166 /*                                                                  */
 167 /*------------------------------------------------------------------*/
 168
 169 static inline gpointer
 170 context_get_ip (MonoContext *ctx)
 171 {
 172         gpointer ip;
 173
 174         ip = (gpointer) ((gint32) (ctx->uc_mcontext.psw.addr) & 0x7fffffff);
 175         return ip;
 176 }
 177
 178 /*========================= End of Function ========================*/
 179
 180 /*------------------------------------------------------------------*/
 181 /*                                                                  */
 182 /* Name         - s390_patch                                        */
 183 /*                                                                  */
 184 /* Function     - Patch the code with a given value.                */
 185 /*                                                                  */
 186 /*------------------------------------------------------------------*/
 187
 188 static void inline
 189 s390_patch (guchar *code, gint32 target)
 190 {
 191         gint32 *offset = (gint32 *) code;
 192
 193         if (target != 00) {
 194                 *offset = target;
 195         }
 196 }
 197
 198 /*========================= End of Function ========================*/
 199
 200 /*------------------------------------------------------------------*/
 201 /*                                                                  */
 202 /* Name         - restoreLMF                                        */
 203 /*                                                                  */
 204 /* Function     - Restore the LMF state prior to exiting a method.  */
 205 /*                                                                  */
 206 /*------------------------------------------------------------------*/
 207
 208 #define restoreLMF(code, frame_reg, stack_usage) do                     \
 209 {                                                                       \
 210         int lmfOffset = 0;                                              \
 211                                                                         \
 212         s390_lr  (code, s390_r13, frame_reg);                           \
 213                                                                         \
 214         lmfOffset = stack_usage -  sizeof(MonoLMF);                     \
 215                                                                         \
 216         /*-------------------------------------------------*/           \
 217         /* r13 = my lmf                                    */           \
 218         /*-------------------------------------------------*/           \
 219         s390_ahi (code, s390_r13, lmfOffset);                           \
 220                                                                         \
 221         /*-------------------------------------------------*/           \
 222         /* r6 = &jit_tls->lmf                              */           \
 223         /*-------------------------------------------------*/           \
 224         s390_l   (code, s390_r6, 0, s390_r13,                           \
 225                   G_STRUCT_OFFSET(MonoLMF, lmf_addr));                  \
 226                                                                         \
 227         /*-------------------------------------------------*/           \
 228         /* r0 = lmf.previous_lmf                           */           \
 229         /*-------------------------------------------------*/           \
 230         s390_l   (code, s390_r0, 0, s390_r13,                           \
 231                   G_STRUCT_OFFSET(MonoLMF, previous_lmf));              \
 232                                                                         \
 233         /*-------------------------------------------------*/           \
 234         /* jit_tls->lmf = previous_lmf                     */           \
 235         /*-------------------------------------------------*/           \
 236         s390_l   (code, s390_r13, 0, s390_r6, 0);                       \
 237         s390_st  (code, s390_r0, 0, s390_r6, 0);                        \
 238 } while (0)
 239
 240 /*========================= End of Function ========================*/
 241
 242 #endif /* __MONO_MINI_S390_H__ */