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 #ifdef HOST_WIN32
   7 #include <windows.h>
   8 /* use SIG* defines if possible */
   9 #ifdef HAVE_SIGNAL_H
  10 #include <signal.h>
  11 #endif
  12
  13 /* sigcontext surrogate */
  14 struct sigcontext {
  15         unsigned int eax;
  16         unsigned int ebx;
  17         unsigned int ecx;
  18         unsigned int edx;
  19         unsigned int ebp;
  20         unsigned int esp;
  21         unsigned int esi;
  22         unsigned int edi;
  23         unsigned int eip;
  24 };
  25
  26 typedef void (* MonoW32ExceptionHandler) (int _dummy, EXCEPTION_RECORD *info, void *context);
  27 void win32_seh_init(void);
  28 void win32_seh_cleanup(void);
  29 void win32_seh_set_handler(int type, MonoW32ExceptionHandler handler);
  30
  31 #ifndef SIGFPE
  32 #define SIGFPE 4
  33 #endif
  34
  35 #ifndef SIGILL
  36 #define SIGILL 8
  37 #endif
  38
  39 #ifndef SIGSEGV
  40 #define SIGSEGV 11
  41 #endif
  42
  43 LONG CALLBACK seh_handler(EXCEPTION_POINTERS* ep);
  44
  45 #endif /* HOST_WIN32 */
  46
  47 #ifdef __HAIKU__
  48 struct sigcontext {
  49         vregs regs;
  50 };
  51 #endif /* __HAIKU__ */
  52
  53 #if defined( __linux__) || defined(__sun) || defined(__APPLE__) || defined(__NetBSD__) || \
  54        defined(__FreeBSD__) || defined(__OpenBSD__)
  55 #define MONO_ARCH_USE_SIGACTION
  56 #endif
  57
  58 #ifndef HOST_WIN32
  59
  60 #ifdef HAVE_WORKING_SIGALTSTACK
  61 /*
  62  * solaris doesn't have pthread_getattr_np () needed by the sigaltstack setup
  63  * code.
  64  */
  65 #ifndef __sun
  66 #define MONO_ARCH_SIGSEGV_ON_ALTSTACK
  67 #endif
  68 /* Haiku doesn't have SA_SIGINFO */
  69 #ifndef __HAIKU__
  70 #define MONO_ARCH_USE_SIGACTION
  71 #endif /* __HAIKU__ */
  72
  73 #endif /* HAVE_WORKING_SIGALTSTACK */
  74 #endif /* !HOST_WIN32 */
  75
  76 #define MONO_ARCH_SUPPORT_SIMD_INTRINSICS 1
  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 #define MONO_ARCH_SIGNAL_STACK_SIZE (16 * 1024)
  86 #define MONO_ARCH_HAVE_RESTORE_STACK_SUPPORT 1
  87
  88 #define MONO_ARCH_CPU_SPEC x86_desc
  89
  90 #define MONO_MAX_IREGS 8
  91 #define MONO_MAX_FREGS 8
  92 #define MONO_MAX_XREGS 8
  93
  94 /* Parameters used by the register allocator */
  95 #define MONO_ARCH_CALLEE_REGS X86_CALLEE_REGS
  96 #define MONO_ARCH_CALLEE_SAVED_REGS X86_CALLER_REGS
  97
  98 #define MONO_ARCH_CALLEE_FREGS (0xff & ~(regmask (MONO_ARCH_FPSTACK_SIZE)))
  99 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
 100
 101 /* All registers are clobered by a call */
 102 #define MONO_ARCH_CALLEE_XREGS (0xff & ~(regmask (MONO_MAX_XREGS)))
 103 #define MONO_ARCH_CALLEE_SAVED_XREGS 0
 104
 105 #define MONO_ARCH_USE_FPSTACK TRUE
 106 #define MONO_ARCH_FPSTACK_SIZE 6
 107
 108 #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)))))
 109
 110 #define MONO_ARCH_INST_FIXED_MASK(desc) ((desc == 'y') ? (X86_BYTE_REGS) : 0)
 111
 112 /* RDX is clobbered by the opcode implementation before accessing sreg2 */
 113 /*
 114  * Originally this contained X86_EDX for div/rem opcodes, but that led to unsolvable
 115  * situations since there are only 3 usable registers for local register allocation.
 116  * Instead, we handle the sreg2==edx case in the opcodes.
 117  */
 118 #define MONO_ARCH_INST_SREG2_MASK(ins) 0
 119
 120 /*
 121  * L is a generic register pair, while l means eax:rdx
 122  */
 123 #define MONO_ARCH_INST_IS_REGPAIR(desc) (desc == 'l' || desc == 'L')
 124 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (desc == 'l' ? X86_EDX : -1)
 125
 126 /* must be at a power of 2 and >= 8 */
 127 #define MONO_ARCH_FRAME_ALIGNMENT 16
 128
 129 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
 130  * reproduceable results for benchmarks */
 131 #define MONO_ARCH_CODE_ALIGNMENT 32
 132
 133 #define MONO_ARCH_RETREG1 X86_EAX
 134 #define MONO_ARCH_RETREG2 X86_EDX
 135
 136 /*This is the max size of the locals area of a given frame. I think 1MB is a safe default for now*/
 137 #define MONO_ARCH_MAX_FRAME_SIZE 0x100000
 138
 139 struct MonoLMF {
 140         /*
 141          * If the lowest bit is set to 1, then this is a trampoline LMF frame.
 142          * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
 143          * the other fields are not valid.
 144          */
 145         guint32    previous_lmf;
 146         gpointer    lmf_addr;
 147         /* Only set in trampoline LMF frames */
 148         MonoMethod *method;
 149         /* Only set in trampoline LMF frames */
 150         guint32     esp;
 151         guint32     ebx;
 152         guint32     edi;
 153         guint32     esi;
 154         guint32     ebp;
 155         guint32     eip;
 156 };
 157
 158 typedef struct {
 159         gboolean need_stack_frame_inited;
 160         gboolean need_stack_frame;
 161 } MonoCompileArch;
 162
 163 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
 164 # define SC_EAX sc_eax
 165 # define SC_EBX sc_ebx
 166 # define SC_ECX sc_ecx
 167 # define SC_EDX sc_edx
 168 # define SC_EBP sc_ebp
 169 # define SC_EIP sc_eip
 170 # define SC_ESP sc_esp
 171 # define SC_EDI sc_edi
 172 # define SC_ESI sc_esi
 173 #elif defined(__HAIKU__)
 174 # define SC_EAX regs.eax
 175 # define SC_EBX regs._reserved_2[2]
 176 # define SC_ECX regs.ecx
 177 # define SC_EDX regs.edx
 178 # define SC_EBP regs.ebp
 179 # define SC_EIP regs.eip
 180 # define SC_ESP regs.esp
 181 # define SC_EDI regs._reserved_2[0]
 182 # define SC_ESI regs._reserved_2[1]
 183 #else
 184 # define SC_EAX eax
 185 # define SC_EBX ebx
 186 # define SC_ECX ecx
 187 # define SC_EDX edx
 188 # define SC_EBP ebp
 189 # define SC_EIP eip
 190 # define SC_ESP esp
 191 # define SC_EDI edi
 192 # define SC_ESI esi
 193 #endif
 194
 195 typedef struct {
 196         guint32 eax;
 197         guint32 ebx;
 198         guint32 ecx;
 199         guint32 edx;
 200         guint32 ebp;
 201         guint32 esp;
 202     guint32 esi;
 203         guint32 edi;
 204         guint32 eip;
 205 } MonoContext;
 206
 207 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->eip = (long)(ip); } while (0);
 208 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->ebp = (long)(bp); } while (0);
 209 #define MONO_CONTEXT_SET_SP(ctx,sp) do { (ctx)->esp = (long)(sp); } while (0);
 210
 211 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->eip))
 212 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->ebp))
 213 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->esp))
 214
 215 #define MONO_CONTEXT_SET_LLVM_EXC_REG(ctx, exc) do { (ctx)->eax = (gsize)exc; } while (0)
 216
 217 #ifdef _MSC_VER
 218
 219 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx, start_func) do { \
 220     unsigned int stackptr; \
 221         mono_arch_flush_register_windows (); \
 222     { \
 223            __asm mov stackptr, ebp \
 224     } \
 225         MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
 226         MONO_CONTEXT_SET_BP ((ctx), stackptr); \
 227         MONO_CONTEXT_SET_SP ((ctx), stackptr); \
 228 } while (0)
 229
 230 #else
 231
 232 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 233                 mono_arch_flush_register_windows ();    \
 234                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 235                 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0));       \
 236                 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0));       \
 237         } while (0)
 238
 239 #endif
 240
 241 /*
 242  * This structure is an extension of MonoLMF and contains extra information.
 243  */
 244 typedef struct {
 245         struct MonoLMF lmf;
 246         gboolean debugger_invoke;
 247         MonoContext ctx; /* if debugger_invoke is TRUE */
 248 } MonoLMFExt;
 249
 250 /* Enables OP_LSHL, OP_LSHL_IMM, OP_LSHR, OP_LSHR_IMM, OP_LSHR_UN, OP_LSHR_UN_IMM */
 251 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS
 252
 253 #define MONO_ARCH_BIGMUL_INTRINS 1
 254 #define MONO_ARCH_NEED_DIV_CHECK 1
 255 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW 1
 256 #define MONO_ARCH_HAVE_INVALIDATE_METHOD 1
 257 #define MONO_ARCH_NEED_GOT_VAR 1
 258 #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION 1
 259 #define MONO_ARCH_ENABLE_MONO_LMF_VAR 1
 260 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE 1
 261 #define MONO_ARCH_HAVE_ATOMIC_ADD 1
 262 #define MONO_ARCH_HAVE_ATOMIC_EXCHANGE 1
 263 #define MONO_ARCH_HAVE_ATOMIC_CAS 1
 264 #define MONO_ARCH_HAVE_IMT 1
 265 #define MONO_ARCH_HAVE_TLS_GET (mono_x86_have_tls_get ())
 266 #define MONO_ARCH_IMT_REG X86_EDX
 267 #define MONO_ARCH_VTABLE_REG X86_EDX
 268 #define MONO_ARCH_RGCTX_REG X86_EDX
 269 #define MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK 1
 270 #define MONO_ARCH_HAVE_LIVERANGE_OPS 1
 271 #define MONO_ARCH_HAVE_XP_UNWIND 1
 272 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
 273 #if defined(__linux__) && !defined(HAVE_MOVING_COLLECTOR)
 274 #define MONO_ARCH_MONITOR_OBJECT_REG X86_EAX
 275 #endif
 276 #define MONO_ARCH_HAVE_STATIC_RGCTX_TRAMPOLINE 1
 277
 278 #define MONO_ARCH_HAVE_CMOV_OPS 1
 279
 280 #ifdef MONO_ARCH_SIMD_INTRINSICS
 281 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
 282 #endif
 283
 284 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 285
 286 #if !defined(__APPLE__)
 287 #define MONO_ARCH_AOT_SUPPORTED 1
 288 #endif
 289
 290 #if defined(__linux__) || defined(__sun)
 291 #define MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH 1
 292 #endif
 293
 294 #define MONO_ARCH_GSHARED_SUPPORTED 1
 295 #define MONO_ARCH_HAVE_LLVM_IMT_TRAMPOLINE 1
 296 #define MONO_ARCH_LLVM_SUPPORTED 1
 297
 298 #if defined(MONO_ARCH_USE_SIGACTION) || defined(TARGET_WIN32)
 299 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
 300 #endif
 301
 302 #define MONO_ARCH_HAVE_FIND_JIT_INFO_EXT 1
 303 #define MONO_ARCH_HAVE_EXCEPTIONS_INIT 1
 304 #define MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD 1
 305
 306 /* Used for optimization, not complete */
 307 #define MONO_ARCH_IS_OP_MEMBASE(opcode) ((opcode) == OP_X86_PUSH_MEMBASE)
 308
 309 #define MONO_ARCH_EMIT_BOUNDS_CHECK(cfg, array_reg, offset, index_reg) do { \
 310             MonoInst *inst; \
 311             MONO_INST_NEW ((cfg), inst, OP_X86_COMPARE_MEMBASE_REG); \
 312             inst->inst_basereg = array_reg; \
 313             inst->inst_offset = offset; \
 314             inst->sreg2 = index_reg; \
 315             MONO_ADD_INS ((cfg)->cbb, inst); \
 316                         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException"); \
 317         } while (0)
 318
 319 typedef struct {
 320         guint8 *address;
 321         guint8 saved_byte;
 322 } MonoBreakpointInfo;
 323
 324 extern MonoBreakpointInfo mono_breakpoint_info [MONO_BREAKPOINT_ARRAY_SIZE];
 325
 326 guint8*
 327 mono_x86_emit_tls_get (guint8* code, int dreg, int tls_offset) MONO_INTERNAL;
 328
 329 guint32
 330 mono_x86_get_this_arg_offset (MonoGenericSharingContext *gsctx, MonoMethodSignature *sig) MONO_INTERNAL;
 331
 332 gboolean
 333 mono_x86_have_tls_get (void) MONO_INTERNAL;
 334
 335 #endif /* __MONO_MINI_X86_H__ */
 336