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(__OpenBSD__)
  52 #define MONO_ARCH_USE_SIGACTION
  53 #endif
  54
  55 #if defined(__native_client__)
  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 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 #define MONO_ARCH_RETREG1 X86_EAX
 138 #define MONO_ARCH_RETREG2 X86_EDX
 139
 140 /*This is the max size of the locals area of a given frame. I think 1MB is a safe default for now*/
 141 #define MONO_ARCH_MAX_FRAME_SIZE 0x100000
 142
 143 /*This is how much a try block must be extended when is is preceeded by a Monitor.Enter() call.
 144 It's 4 bytes as this is how many bytes + 1 that 'add 0x10, %esp' takes. It is used to pop the arguments from
 145 the monitor.enter call and must be already protected.*/
 146 #define MONO_ARCH_MONITOR_ENTER_ADJUSTMENT 4
 147
 148 struct MonoLMF {
 149         /*
 150          * If the lowest bit is set to 1, then this is a trampoline LMF frame.
 151          * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
 152          * the other fields are not valid.
 153          */
 154         guint32    previous_lmf;
 155         gpointer    lmf_addr;
 156         /* Only set in trampoline LMF frames */
 157         MonoMethod *method;
 158         /* Only set in trampoline LMF frames */
 159         guint32     esp;
 160         guint32     ebx;
 161         guint32     edi;
 162         guint32     esi;
 163         guint32     ebp;
 164         guint32     eip;
 165 };
 166
 167 typedef struct {
 168         gboolean need_stack_frame_inited;
 169         gboolean need_stack_frame;
 170         int sp_fp_offset, param_area_size;
 171 } MonoCompileArch;
 172
 173 #define MONO_CONTEXT_SET_LLVM_EXC_REG(ctx, exc) do { (ctx)->eax = (gsize)exc; } while (0)
 174
 175 #ifdef _MSC_VER
 176
 177 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx, start_func) do { \
 178     unsigned int stackptr; \
 179         mono_arch_flush_register_windows (); \
 180     { \
 181            __asm mov stackptr, ebp \
 182     } \
 183         MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
 184         MONO_CONTEXT_SET_BP ((ctx), stackptr); \
 185         MONO_CONTEXT_SET_SP ((ctx), stackptr); \
 186 } while (0)
 187
 188 #else
 189
 190 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 191                 mono_arch_flush_register_windows ();    \
 192                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 193                 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0));       \
 194                 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0));       \
 195         } while (0)
 196
 197 #endif
 198
 199 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
 200
 201 /* Enables OP_LSHL, OP_LSHL_IMM, OP_LSHR, OP_LSHR_IMM, OP_LSHR_UN, OP_LSHR_UN_IMM */
 202 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS
 203
 204 #define MONO_ARCH_BIGMUL_INTRINS 1
 205 #define MONO_ARCH_NEED_DIV_CHECK 1
 206 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW 1
 207 #define MONO_ARCH_HAVE_INVALIDATE_METHOD 1
 208 #define MONO_ARCH_NEED_GOT_VAR 1
 209 #define MONO_ARCH_ENABLE_MONO_LMF_VAR 1
 210 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE 1
 211 #define MONO_ARCH_HAVE_ATOMIC_ADD 1
 212 #define MONO_ARCH_HAVE_ATOMIC_EXCHANGE 1
 213 #define MONO_ARCH_HAVE_ATOMIC_CAS 1
 214 #define MONO_ARCH_HAVE_IMT 1
 215 #define MONO_ARCH_HAVE_TLS_GET (mono_x86_have_tls_get ())
 216 #define MONO_ARCH_IMT_REG X86_EDX
 217 #define MONO_ARCH_VTABLE_REG X86_EDX
 218 #define MONO_ARCH_RGCTX_REG MONO_ARCH_IMT_REG
 219 #define MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK 1
 220 #define MONO_ARCH_HAVE_LIVERANGE_OPS 1
 221 #define MONO_ARCH_HAVE_XP_UNWIND 1
 222 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
 223 #if defined(__linux__) || defined (__APPLE__)
 224 #define MONO_ARCH_MONITOR_OBJECT_REG X86_EAX
 225 #endif
 226 #if !defined(__native_client_codegen__)
 227 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
 228 #endif
 229 #define MONO_ARCH_GOT_REG X86_EBX
 230 #define MONO_ARCH_HAVE_GET_TRAMPOLINES 1
 231
 232 #define MONO_ARCH_HAVE_CMOV_OPS 1
 233
 234 #ifdef MONO_ARCH_SIMD_INTRINSICS
 235 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
 236 #endif
 237
 238 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 239
 240 #ifndef TARGET_WIN32
 241 #define MONO_ARCH_AOT_SUPPORTED 1
 242 #endif
 243
 244 #define MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH 1
 245
 246 #define MONO_ARCH_GSHARED_SUPPORTED 1
 247 #define MONO_ARCH_HAVE_LLVM_IMT_TRAMPOLINE 1
 248 #define MONO_ARCH_LLVM_SUPPORTED 1
 249 #define MONO_ARCH_THIS_AS_FIRST_ARG 1
 250
 251 #if defined(MONO_ARCH_USE_SIGACTION) || defined(TARGET_WIN32)
 252 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
 253 #endif
 254
 255 #define MONO_ARCH_HAVE_EXCEPTIONS_INIT 1
 256 #define MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD 1
 257
 258 #define MONO_ARCH_HAVE_CARD_TABLE_WBARRIER 1
 259 #define MONO_ARCH_HAVE_SETUP_RESUME_FROM_SIGNAL_HANDLER_CTX 1
 260 #define MONO_ARCH_GC_MAPS_SUPPORTED 1
 261 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG 1
 262 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
 263 #define MONO_ARCH_GSHAREDVT_SUPPORTED 1
 264
 265 gboolean
 266 mono_x86_tail_call_supported (MonoMethodSignature *caller_sig, MonoMethodSignature *callee_sig) MONO_INTERNAL;
 267
 268 #define MONO_ARCH_USE_OP_TAIL_CALL(caller_sig, callee_sig) mono_x86_tail_call_supported (caller_sig, callee_sig)
 269
 270 /* Used for optimization, not complete */
 271 #define MONO_ARCH_IS_OP_MEMBASE(opcode) ((opcode) == OP_X86_PUSH_MEMBASE)
 272
 273 #define MONO_ARCH_EMIT_BOUNDS_CHECK(cfg, array_reg, offset, index_reg) do { \
 274             MonoInst *inst; \
 275             MONO_INST_NEW ((cfg), inst, OP_X86_COMPARE_MEMBASE_REG); \
 276             inst->inst_basereg = array_reg; \
 277             inst->inst_offset = offset; \
 278             inst->sreg2 = index_reg; \
 279             MONO_ADD_INS ((cfg)->cbb, inst); \
 280                         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException"); \
 281         } while (0)
 282
 283 typedef struct {
 284         guint8 *address;
 285         guint8 saved_byte;
 286 } MonoBreakpointInfo;
 287
 288 extern MonoBreakpointInfo mono_breakpoint_info [MONO_BREAKPOINT_ARRAY_SIZE];
 289
 290 /* Return value marshalling for calls between gsharedvt and normal code */
 291 typedef enum {
 292         GSHAREDVT_RET_NONE = 0,
 293         GSHAREDVT_RET_IREGS = 1,
 294         GSHAREDVT_RET_DOUBLE_FPSTACK = 2,
 295         GSHAREDVT_RET_FLOAT_FPSTACK = 3,
 296         GSHAREDVT_RET_STACK_POP = 4,
 297         GSHAREDVT_RET_I1 = 5,
 298         GSHAREDVT_RET_U1 = 6,
 299         GSHAREDVT_RET_I2 = 7,
 300         GSHAREDVT_RET_U2 = 8
 301 } GSharedVtRetMarshal;
 302
 303 typedef struct {
 304         /* Method address to call */
 305         gpointer addr;
 306         /* The trampoline reads this, so keep the size explicit */
 307         int ret_marshal;
 308         /* If ret_marshal != NONE, this is the stack slot of the vret arg, else -1 */
 309         int vret_arg_slot;
 310         /* The stack slot where the return value will be stored */
 311         int vret_slot;
 312         int stack_usage, map_count;
 313         /* If not -1, then make a virtual call using this vtable offset */
 314         int vcall_offset;
 315         /* Whenever this is a in or an out call */
 316         int gsharedvt_in;
 317         int map [MONO_ZERO_LEN_ARRAY];
 318 } GSharedVtCallInfo;
 319
 320 guint8*
 321 mono_x86_emit_tls_get (guint8* code, int dreg, int tls_offset) MONO_INTERNAL;
 322
 323 guint32
 324 mono_x86_get_this_arg_offset (MonoGenericSharingContext *gsctx, MonoMethodSignature *sig) MONO_INTERNAL;
 325
 326 gboolean
 327 mono_x86_have_tls_get (void) MONO_INTERNAL;
 328
 329 void
 330 mono_x86_throw_exception (mgreg_t *regs, MonoObject *exc,
 331                                                   mgreg_t eip, gboolean rethrow) MONO_INTERNAL;
 332
 333 void
 334 mono_x86_throw_corlib_exception (mgreg_t *regs, guint32 ex_token_index,
 335                                                                  mgreg_t eip, gint32 pc_offset) MONO_INTERNAL;
 336
 337 void
 338 mono_x86_patch (unsigned char* code, gpointer target) MONO_INTERNAL;
 339
 340 void
 341 mono_x86_start_gsharedvt_call (GSharedVtCallInfo *info, gpointer *caller, gpointer *callee) MONO_INTERNAL;
 342
 343 #endif /* __MONO_MINI_X86_H__ */
 344