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_SIMD_INTRINSICS 1
  78 #define MONO_ARCH_SUPPORT_TASKLETS 1
  79
  80 #ifndef DISABLE_SIMD
  81 #define MONO_ARCH_SIMD_INTRINSICS 1
  82 #define MONO_ARCH_NEED_SIMD_BANK 1
  83 #endif
  84
  85 /* we should lower this size and make sure we don't call heavy stack users in the segv handler */
  86 #define MONO_ARCH_SIGNAL_STACK_SIZE (16 * 1024)
  87 #define MONO_ARCH_HAVE_RESTORE_STACK_SUPPORT 1
  88
  89 #define MONO_ARCH_CPU_SPEC x86_desc
  90
  91 #define MONO_MAX_IREGS 8
  92 #define MONO_MAX_FREGS 8
  93 #define MONO_MAX_XREGS 8
  94
  95 /* Parameters used by the register allocator */
  96 #define MONO_ARCH_CALLEE_REGS X86_CALLEE_REGS
  97 #define MONO_ARCH_CALLEE_SAVED_REGS X86_CALLER_REGS
  98
  99 #define MONO_ARCH_CALLEE_FREGS (0xff & ~(regmask (MONO_ARCH_FPSTACK_SIZE)))
 100 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
 101
 102 /* All registers are clobered by a call */
 103 #define MONO_ARCH_CALLEE_XREGS (0xff & ~(regmask (MONO_MAX_XREGS)))
 104 #define MONO_ARCH_CALLEE_SAVED_XREGS 0
 105
 106 #define MONO_ARCH_USE_FPSTACK TRUE
 107 #define MONO_ARCH_FPSTACK_SIZE 6
 108
 109 #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)))))
 110
 111 #define MONO_ARCH_INST_FIXED_MASK(desc) ((desc == 'y') ? (X86_BYTE_REGS) : 0)
 112
 113 /* RDX is clobbered by the opcode implementation before accessing sreg2 */
 114 /*
 115  * Originally this contained X86_EDX for div/rem opcodes, but that led to unsolvable
 116  * situations since there are only 3 usable registers for local register allocation.
 117  * Instead, we handle the sreg2==edx case in the opcodes.
 118  */
 119 #define MONO_ARCH_INST_SREG2_MASK(ins) 0
 120
 121 /*
 122  * L is a generic register pair, while l means eax:rdx
 123  */
 124 #define MONO_ARCH_INST_IS_REGPAIR(desc) (desc == 'l' || desc == 'L')
 125 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (desc == 'l' ? X86_EDX : -1)
 126
 127 /* must be at a power of 2 and >= 8 */
 128 #define MONO_ARCH_FRAME_ALIGNMENT 16
 129
 130 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
 131  * reproduceable results for benchmarks */
 132 #define MONO_ARCH_CODE_ALIGNMENT 32
 133
 134 #define MONO_ARCH_RETREG1 X86_EAX
 135 #define MONO_ARCH_RETREG2 X86_EDX
 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 } MonoCompileArch;
 168
 169 #define MONO_CONTEXT_SET_LLVM_EXC_REG(ctx, exc) do { (ctx)->eax = (gsize)exc; } while (0)
 170
 171 #ifdef _MSC_VER
 172
 173 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx, start_func) do { \
 174     unsigned int stackptr; \
 175         mono_arch_flush_register_windows (); \
 176     { \
 177            __asm mov stackptr, ebp \
 178     } \
 179         MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
 180         MONO_CONTEXT_SET_BP ((ctx), stackptr); \
 181         MONO_CONTEXT_SET_SP ((ctx), stackptr); \
 182 } while (0)
 183
 184 #else
 185
 186 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 187                 mono_arch_flush_register_windows ();    \
 188                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 189                 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0));       \
 190                 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0));       \
 191         } while (0)
 192
 193 #endif
 194
 195 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
 196
 197 /* Enables OP_LSHL, OP_LSHL_IMM, OP_LSHR, OP_LSHR_IMM, OP_LSHR_UN, OP_LSHR_UN_IMM */
 198 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS
 199
 200 #define MONO_ARCH_BIGMUL_INTRINS 1
 201 #define MONO_ARCH_NEED_DIV_CHECK 1
 202 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW 1
 203 #define MONO_ARCH_HAVE_INVALIDATE_METHOD 1
 204 #define MONO_ARCH_NEED_GOT_VAR 1
 205 #if !defined(__APPLE__)
 206 #define MONO_ARCH_ENABLE_MONO_LMF_VAR 1
 207 #endif
 208 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE 1
 209 #define MONO_ARCH_HAVE_ATOMIC_ADD 1
 210 #define MONO_ARCH_HAVE_ATOMIC_EXCHANGE 1
 211 #define MONO_ARCH_HAVE_ATOMIC_CAS 1
 212 #define MONO_ARCH_HAVE_IMT 1
 213 #define MONO_ARCH_HAVE_TLS_GET (mono_x86_have_tls_get ())
 214 #define MONO_ARCH_IMT_REG X86_EDX
 215 #define MONO_ARCH_VTABLE_REG X86_EDX
 216 #define MONO_ARCH_RGCTX_REG X86_EDX
 217 #define MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK 1
 218 #define MONO_ARCH_HAVE_LIVERANGE_OPS 1
 219 #define MONO_ARCH_HAVE_XP_UNWIND 1
 220 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
 221 #if defined(__linux__) || defined (__APPLE__)
 222 #define MONO_ARCH_MONITOR_OBJECT_REG X86_EAX
 223 #endif
 224 #define MONO_ARCH_HAVE_STATIC_RGCTX_TRAMPOLINE 1
 225 #if !defined (__APPLE__) || defined(__native_client_codegen__)
 226 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
 227 #endif
 228 #define MONO_ARCH_GOT_REG X86_EBX
 229 #define MONO_ARCH_HAVE_GET_TRAMPOLINES 1
 230
 231 #define MONO_ARCH_HAVE_CMOV_OPS 1
 232
 233 #ifdef MONO_ARCH_SIMD_INTRINSICS
 234 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
 235 #endif
 236
 237 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 238
 239 #define MONO_ARCH_AOT_SUPPORTED 1
 240
 241 #define MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH 1
 242
 243 #define MONO_ARCH_GSHARED_SUPPORTED 1
 244 #define MONO_ARCH_HAVE_LLVM_IMT_TRAMPOLINE 1
 245 #define MONO_ARCH_LLVM_SUPPORTED 1
 246 #define MONO_ARCH_THIS_AS_FIRST_ARG 1
 247
 248 #if defined(MONO_ARCH_USE_SIGACTION) || defined(TARGET_WIN32)
 249 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
 250 #endif
 251
 252 #define MONO_ARCH_HAVE_EXCEPTIONS_INIT 1
 253 #define MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD 1
 254
 255 #define MONO_ARCH_HAVE_CARD_TABLE_WBARRIER 1
 256 #define MONO_ARCH_HAVE_SETUP_RESUME_FROM_SIGNAL_HANDLER_CTX 1
 257 #define MONO_ARCH_GC_MAPS_SUPPORTED 1
 258 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG 1
 259 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
 260
 261 gboolean
 262 mono_x86_tail_call_supported (MonoMethodSignature *caller_sig, MonoMethodSignature *callee_sig) MONO_INTERNAL;
 263
 264 #define MONO_ARCH_USE_OP_TAIL_CALL(caller_sig, callee_sig) mono_x86_tail_call_supported (caller_sig, callee_sig)
 265
 266 /* Used for optimization, not complete */
 267 #define MONO_ARCH_IS_OP_MEMBASE(opcode) ((opcode) == OP_X86_PUSH_MEMBASE)
 268
 269 #define MONO_ARCH_EMIT_BOUNDS_CHECK(cfg, array_reg, offset, index_reg) do { \
 270             MonoInst *inst; \
 271             MONO_INST_NEW ((cfg), inst, OP_X86_COMPARE_MEMBASE_REG); \
 272             inst->inst_basereg = array_reg; \
 273             inst->inst_offset = offset; \
 274             inst->sreg2 = index_reg; \
 275             MONO_ADD_INS ((cfg)->cbb, inst); \
 276                         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException"); \
 277         } while (0)
 278
 279 typedef struct {
 280         guint8 *address;
 281         guint8 saved_byte;
 282 } MonoBreakpointInfo;
 283
 284 extern MonoBreakpointInfo mono_breakpoint_info [MONO_BREAKPOINT_ARRAY_SIZE];
 285
 286 guint8*
 287 mono_x86_emit_tls_get (guint8* code, int dreg, int tls_offset) MONO_INTERNAL;
 288
 289 guint32
 290 mono_x86_get_this_arg_offset (MonoGenericSharingContext *gsctx, MonoMethodSignature *sig) MONO_INTERNAL;
 291
 292 gboolean
 293 mono_x86_have_tls_get (void) MONO_INTERNAL;
 294
 295 void
 296 mono_x86_throw_exception (mgreg_t *regs, MonoObject *exc,
 297                                                   mgreg_t eip, gboolean rethrow) MONO_INTERNAL;
 298
 299 void
 300 mono_x86_throw_corlib_exception (mgreg_t *regs, guint32 ex_token_index,
 301                                                                  mgreg_t eip, gint32 pc_offset) MONO_INTERNAL;
 302
 303 void
 304 mono_x86_patch (unsigned char* code, gpointer target) MONO_INTERNAL;
 305
 306 #endif /* __MONO_MINI_X86_H__ */
 307