mono/mini/mini-x86.h

   1 #ifndef __MONO_MINI_X86_H__
   2 #define __MONO_MINI_X86_H__
   3
   4 #include <mono/arch/x86/x86-codegen.h>
   5 #include <mono/utils/mono-sigcontext.h>
   6 #include <mono/utils/mono-context.h>
   7
   8 #ifdef __native_client_codegen__
   9 #define kNaClAlignmentX86 32
  10 #define kNaClAlignmentMaskX86 (kNaClAlignmentX86 - 1)
  11
  12 #define kNaClLengthOfCallImm kx86NaClLengthOfCallImm
  13 #endif
  14
  15 #ifdef HOST_WIN32
  16 #include <windows.h>
  17 /* use SIG* defines if possible */
  18 #ifdef HAVE_SIGNAL_H
  19 #include <signal.h>
  20 #endif
  21
  22 typedef void (* MonoW32ExceptionHandler) (int _dummy, EXCEPTION_POINTERS *info, void *context);
  23
  24 void win32_seh_init(void);
  25 void win32_seh_cleanup(void);
  26 void win32_seh_set_handler(int type, MonoW32ExceptionHandler handler);
  27
  28 #ifndef SIGFPE
  29 #define SIGFPE 4
  30 #endif
  31
  32 #ifndef SIGILL
  33 #define SIGILL 8
  34 #endif
  35
  36 #ifndef SIGSEGV
  37 #define SIGSEGV 11
  38 #endif
  39
  40 LONG CALLBACK seh_handler(EXCEPTION_POINTERS* ep);
  41
  42 #endif /* HOST_WIN32 */
  43
  44 #ifdef __HAIKU__
  45 struct sigcontext {
  46         vregs regs;
  47 };
  48 #endif /* __HAIKU__ */
  49
  50 #if defined( __linux__) || defined(__sun) || defined(__APPLE__) || defined(__NetBSD__) || \
  51        defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__OpenBSD__)
  52 #define MONO_ARCH_USE_SIGACTION
  53 #endif
  54
  55 #if defined(__native_client__) || defined(HOST_WATCHOS)
  56 #undef MONO_ARCH_USE_SIGACTION
  57 #endif
  58
  59 #ifndef HOST_WIN32
  60
  61 #ifdef HAVE_WORKING_SIGALTSTACK
  62 /*
  63  * solaris doesn't have pthread_getattr_np () needed by the sigaltstack setup
  64  * code.
  65  */
  66 #ifndef __sun
  67 #define MONO_ARCH_SIGSEGV_ON_ALTSTACK
  68 #endif
  69 /* Haiku doesn't have SA_SIGINFO */
  70 #ifndef __HAIKU__
  71 #define MONO_ARCH_USE_SIGACTION
  72 #endif /* __HAIKU__ */
  73
  74 #endif /* HAVE_WORKING_SIGALTSTACK */
  75 #endif /* !HOST_WIN32 */
  76
  77 #define MONO_ARCH_SUPPORT_TASKLETS 1
  78
  79 #ifndef DISABLE_SIMD
  80 #define MONO_ARCH_SIMD_INTRINSICS 1
  81 #define MONO_ARCH_NEED_SIMD_BANK 1
  82 #endif
  83
  84 /* we should lower this size and make sure we don't call heavy stack users in the segv handler */
  85 #if defined(__APPLE__)
  86 #define MONO_ARCH_SIGNAL_STACK_SIZE MINSIGSTKSZ
  87 #else
  88 #define MONO_ARCH_SIGNAL_STACK_SIZE (16 * 1024)
  89 #endif
  90 #define MONO_ARCH_HAVE_RESTORE_STACK_SUPPORT 1
  91
  92 #define MONO_ARCH_CPU_SPEC mono_x86_desc
  93
  94 #define MONO_MAX_IREGS 8
  95 #define MONO_MAX_FREGS 8
  96 #define MONO_MAX_XREGS 8
  97
  98 /* Parameters used by the register allocator */
  99 #define MONO_ARCH_CALLEE_REGS X86_CALLEE_REGS
 100 #define MONO_ARCH_CALLEE_SAVED_REGS X86_CALLER_REGS
 101
 102 #define MONO_ARCH_CALLEE_FREGS (0xff & ~(regmask (MONO_ARCH_FPSTACK_SIZE)))
 103 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
 104
 105 /* All registers are clobered by a call */
 106 #define MONO_ARCH_CALLEE_XREGS (0xff & ~(regmask (MONO_MAX_XREGS)))
 107 #define MONO_ARCH_CALLEE_SAVED_XREGS 0
 108
 109 #define MONO_ARCH_USE_FPSTACK TRUE
 110 #define MONO_ARCH_FPSTACK_SIZE 6
 111
 112 #define MONO_ARCH_INST_FIXED_REG(desc) (((desc == ' ') || (desc == 'i')) ? -1 : ((desc == 's') ? X86_ECX : ((desc == 'a') ? X86_EAX : ((desc == 'd') ? X86_EDX : ((desc == 'l') ? X86_EAX : -1)))))
 113
 114 #define MONO_ARCH_INST_FIXED_MASK(desc) ((desc == 'y') ? (X86_BYTE_REGS) : 0)
 115
 116 /* RDX is clobbered by the opcode implementation before accessing sreg2 */
 117 /*
 118  * Originally this contained X86_EDX for div/rem opcodes, but that led to unsolvable
 119  * situations since there are only 3 usable registers for local register allocation.
 120  * Instead, we handle the sreg2==edx case in the opcodes.
 121  */
 122 #define MONO_ARCH_INST_SREG2_MASK(ins) 0
 123
 124 /*
 125  * L is a generic register pair, while l means eax:rdx
 126  */
 127 #define MONO_ARCH_INST_IS_REGPAIR(desc) (desc == 'l' || desc == 'L')
 128 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (desc == 'l' ? X86_EDX : -1)
 129
 130 /* must be at a power of 2 and >= 8 */
 131 #define MONO_ARCH_FRAME_ALIGNMENT 16
 132
 133 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
 134  * reproduceable results for benchmarks */
 135 #define MONO_ARCH_CODE_ALIGNMENT 32
 136
 137 /*This is the max size of the locals area of a given frame. I think 1MB is a safe default for now*/
 138 #define MONO_ARCH_MAX_FRAME_SIZE 0x100000
 139
 140 /*This is how much a try block must be extended when is is preceeded by a Monitor.Enter() call.
 141 It's 4 bytes as this is how many bytes + 1 that 'add 0x10, %esp' takes. It is used to pop the arguments from
 142 the monitor.enter call and must be already protected.*/
 143 #define MONO_ARCH_MONITOR_ENTER_ADJUSTMENT 4
 144
 145 struct MonoLMF {
 146         /*
 147          * If the lowest bit is set to 1, then this is a trampoline LMF frame.
 148          * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
 149          * the other fields are not valid.
 150          */
 151         guint32    previous_lmf;
 152         gpointer    lmf_addr;
 153         /* Only set in trampoline LMF frames */
 154         MonoMethod *method;
 155         /* Only set in trampoline LMF frames */
 156         guint32     esp;
 157         guint32     ebx;
 158         guint32     edi;
 159         guint32     esi;
 160         guint32     ebp;
 161         guint32     eip;
 162 };
 163
 164 typedef struct {
 165         gboolean need_stack_frame_inited;
 166         gboolean need_stack_frame;
 167         int sp_fp_offset, param_area_size;
 168         gpointer ss_tramp_var;
 169         gpointer bp_tramp_var;
 170 } MonoCompileArch;
 171
 172 #define MONO_CONTEXT_SET_LLVM_EXC_REG(ctx, exc) do { (ctx)->eax = (gsize)exc; } while (0)
 173
 174 #ifdef _MSC_VER
 175
 176 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx, start_func) do { \
 177     unsigned int stackptr; \
 178         mono_arch_flush_register_windows (); \
 179     { \
 180            __asm mov stackptr, ebp \
 181     } \
 182         MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
 183         MONO_CONTEXT_SET_BP ((ctx), stackptr); \
 184         MONO_CONTEXT_SET_SP ((ctx), stackptr); \
 185 } while (0)
 186
 187 #else
 188
 189 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 190                 mono_arch_flush_register_windows ();    \
 191                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 192                 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0));       \
 193                 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0));       \
 194         } while (0)
 195
 196 #endif
 197
 198 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
 199
 200 /* Enables OP_LSHL, OP_LSHL_IMM, OP_LSHR, OP_LSHR_IMM, OP_LSHR_UN, OP_LSHR_UN_IMM */
 201 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS
 202
 203 #define MONO_ARCH_NEED_DIV_CHECK 1
 204 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW 1
 205 #define MONO_ARCH_HAVE_INVALIDATE_METHOD 1
 206 #define MONO_ARCH_NEED_GOT_VAR 1
 207 #ifndef HOST_WIN32
 208 /* X86 uses jit_tls->lmf (See emit_push_lmf ()) */
 209 #define MONO_ARCH_ENABLE_MONO_LMF_VAR 1
 210 #endif
 211 #define MONO_ARCH_HAVE_TLS_GET (mono_x86_have_tls_get ())
 212 #define MONO_ARCH_IMT_REG X86_EDX
 213 #define MONO_ARCH_VTABLE_REG X86_EDX
 214 #define MONO_ARCH_RGCTX_REG MONO_ARCH_IMT_REG
 215 #define MONO_ARCH_EXC_REG X86_EAX
 216 #define MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK 1
 217 #define MONO_ARCH_HAVE_LIVERANGE_OPS 1
 218 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
 219 #if !defined(__native_client_codegen__)
 220 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
 221 #endif
 222 #define MONO_ARCH_GOT_REG X86_EBX
 223 #define MONO_ARCH_HAVE_GET_TRAMPOLINES 1
 224 #define MONO_ARCH_HAVE_GENERAL_RGCTX_LAZY_FETCH_TRAMPOLINE 1
 225
 226 #define MONO_ARCH_HAVE_CMOV_OPS 1
 227
 228 #ifdef MONO_ARCH_SIMD_INTRINSICS
 229 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
 230 #endif
 231
 232 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 233
 234 #define MONO_ARCH_AOT_SUPPORTED 1
 235
 236 #define MONO_ARCH_GSHARED_SUPPORTED 1
 237 #define MONO_ARCH_LLVM_SUPPORTED 1
 238
 239 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
 240
 241 #define MONO_ARCH_HAVE_EXCEPTIONS_INIT 1
 242 #define MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD 1
 243
 244 #define MONO_ARCH_HAVE_CARD_TABLE_WBARRIER 1
 245 #define MONO_ARCH_HAVE_SETUP_RESUME_FROM_SIGNAL_HANDLER_CTX 1
 246 #define MONO_ARCH_GC_MAPS_SUPPORTED 1
 247 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG 1
 248 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
 249 #define MONO_ARCH_GSHAREDVT_SUPPORTED 1
 250 #define MONO_ARCH_HAVE_OP_TAIL_CALL 1
 251 #define MONO_ARCH_HAVE_TRANSLATE_TLS_OFFSET 1
 252 #define MONO_ARCH_HAVE_TLS_GET_REG 1
 253 #define MONO_ARCH_HAVE_DUMMY_INIT 1
 254 #define MONO_ARCH_HAVE_SDB_TRAMPOLINES 1
 255 #define MONO_ARCH_HAVE_PATCH_CODE_NEW 1
 256
 257 /* Used for optimization, not complete */
 258 #define MONO_ARCH_IS_OP_MEMBASE(opcode) ((opcode) == OP_X86_PUSH_MEMBASE)
 259
 260 #define MONO_ARCH_EMIT_BOUNDS_CHECK(cfg, array_reg, offset, index_reg) do { \
 261             MonoInst *inst; \
 262             MONO_INST_NEW ((cfg), inst, OP_X86_COMPARE_MEMBASE_REG); \
 263             inst->inst_basereg = array_reg; \
 264             inst->inst_offset = offset; \
 265             inst->sreg2 = index_reg; \
 266             MONO_ADD_INS ((cfg)->cbb, inst); \
 267                         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException"); \
 268         } while (0)
 269
 270 /* Return value marshalling for calls between gsharedvt and normal code */
 271 typedef enum {
 272         GSHAREDVT_RET_NONE = 0,
 273         GSHAREDVT_RET_IREGS = 1,
 274         GSHAREDVT_RET_DOUBLE_FPSTACK = 2,
 275         GSHAREDVT_RET_FLOAT_FPSTACK = 3,
 276         GSHAREDVT_RET_STACK_POP = 4,
 277         GSHAREDVT_RET_I1 = 5,
 278         GSHAREDVT_RET_U1 = 6,
 279         GSHAREDVT_RET_I2 = 7,
 280         GSHAREDVT_RET_U2 = 8,
 281         GSHAREDVT_RET_IREG = 9
 282 } GSharedVtRetMarshal;
 283
 284 typedef struct {
 285         /* Method address to call */
 286         gpointer addr;
 287         /* The trampoline reads this, so keep the size explicit */
 288         int ret_marshal;
 289         /* If ret_marshal != NONE, this is the stack slot of the vret arg, else -1 */
 290         int vret_arg_slot;
 291         /* The stack slot where the return value will be stored */
 292         int vret_slot;
 293         int stack_usage, map_count;
 294         /* If not -1, then make a virtual call using this vtable offset */
 295         int vcall_offset;
 296         /* If 1, make an indirect call to the address in the rgctx reg */
 297         int calli;
 298         /* Whenever this is a in or an out call */
 299         int gsharedvt_in;
 300         int map [MONO_ZERO_LEN_ARRAY];
 301 } GSharedVtCallInfo;
 302
 303 guint8*
 304 mono_x86_emit_tls_get (guint8* code, int dreg, int tls_offset);
 305
 306 guint8*
 307 mono_x86_emit_tls_get_reg (guint8* code, int dreg, int offset_reg);
 308
 309 guint32
 310 mono_x86_get_this_arg_offset (MonoMethodSignature *sig);
 311
 312 gboolean
 313 mono_x86_have_tls_get (void);
 314
 315 void
 316 mono_x86_throw_exception (mgreg_t *regs, MonoObject *exc,
 317                                                   mgreg_t eip, gboolean rethrow);
 318
 319 void
 320 mono_x86_throw_corlib_exception (mgreg_t *regs, guint32 ex_token_index,
 321                                                                  mgreg_t eip, gint32 pc_offset);
 322
 323 void
 324 mono_x86_patch (unsigned char* code, gpointer target);
 325
 326 gpointer
 327 mono_x86_start_gsharedvt_call (GSharedVtCallInfo *info, gpointer *caller, gpointer *callee, gpointer mrgctx_reg);
 328
 329 #endif /* __MONO_MINI_X86_H__ */
 330