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 #ifdef PLATFORM_WIN32
   6 #include <windows.h>
   7 /* use SIG* defines if possible */
   8 #ifdef HAVE_SIGNAL_H
   9 #include <signal.h>
  10 #endif
  11
  12 /* sigcontext surrogate */
  13 struct sigcontext {
  14         unsigned int eax;
  15         unsigned int ebx;
  16         unsigned int ecx;
  17         unsigned int edx;
  18         unsigned int ebp;
  19         unsigned int esp;
  20         unsigned int esi;
  21         unsigned int edi;
  22         unsigned int eip;
  23 };
  24
  25 typedef void (* MonoW32ExceptionHandler) (int);
  26 void win32_seh_init(void);
  27 void win32_seh_cleanup(void);
  28 void win32_seh_set_handler(int type, MonoW32ExceptionHandler handler);
  29
  30 #ifndef SIGFPE
  31 #define SIGFPE 4
  32 #endif
  33
  34 #ifndef SIGILL
  35 #define SIGILL 8
  36 #endif
  37
  38 #ifndef SIGSEGV
  39 #define SIGSEGV 11
  40 #endif
  41
  42 LONG CALLBACK seh_handler(EXCEPTION_POINTERS* ep);
  43
  44 #endif /* PLATFORM_WIN32 */
  45
  46 #if defined( __linux__) || defined(__sun) || defined(__APPLE__) || defined(__NetBSD__)
  47 #define MONO_ARCH_USE_SIGACTION
  48 #endif
  49
  50 #ifndef PLATFORM_WIN32
  51
  52 #ifdef HAVE_WORKING_SIGALTSTACK
  53 /*
  54  * solaris doesn't have pthread_getattr_np () needed by the sigaltstack setup
  55  * code.
  56  */
  57 #ifndef __sun
  58 #define MONO_ARCH_SIGSEGV_ON_ALTSTACK
  59 #endif
  60 #define MONO_ARCH_USE_SIGACTION
  61
  62 #endif /* HAVE_WORKING_SIGALTSTACK */
  63 #endif /* !PLATFORM_WIN32 */
  64
  65 #define MONO_ARCH_SUPPORT_SIMD_INTRINSICS 1
  66
  67 #ifndef DISABLE_SIMD
  68 #define MONO_ARCH_SIMD_INTRINSICS 1
  69 #define MONO_ARCH_NEED_SIMD_BANK 1
  70 #endif
  71
  72 /* we should lower this size and make sure we don't call heavy stack users in the segv handler */
  73 #define MONO_ARCH_SIGNAL_STACK_SIZE (16 * 1024)
  74 #define MONO_ARCH_HAVE_RESTORE_STACK_SUPPORT 1
  75
  76 #define MONO_ARCH_CPU_SPEC x86_desc
  77
  78 #define MONO_MAX_IREGS 8
  79 #define MONO_MAX_FREGS 8
  80 #define MONO_MAX_XREGS 8
  81
  82 /* Parameters used by the register allocator */
  83 #define MONO_ARCH_CALLEE_REGS X86_CALLEE_REGS
  84 #define MONO_ARCH_CALLEE_SAVED_REGS X86_CALLER_REGS
  85
  86 #define MONO_ARCH_CALLEE_FREGS (0xff & ~(regmask (MONO_ARCH_FPSTACK_SIZE)))
  87 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
  88
  89 /* All registers are clobered by a call */
  90 #define MONO_ARCH_CALLEE_XREGS (0xff & ~(regmask (MONO_MAX_XREGS)))
  91 #define MONO_ARCH_CALLEE_SAVED_XREGS 0
  92
  93 #define MONO_ARCH_USE_FPSTACK TRUE
  94 #define MONO_ARCH_FPSTACK_SIZE 6
  95
  96 #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)))))
  97
  98 #define MONO_ARCH_INST_FIXED_MASK(desc) ((desc == 'y') ? (X86_BYTE_REGS) : 0)
  99
 100 /* RDX is clobbered by the opcode implementation before accessing sreg2 */
 101 /*
 102  * Originally this contained X86_EDX for div/rem opcodes, but that led to unsolvable
 103  * situations since there are only 3 usable registers for local register allocation.
 104  * Instead, we handle the sreg2==edx case in the opcodes.
 105  */
 106 #define MONO_ARCH_INST_SREG2_MASK(ins) 0
 107
 108 /*
 109  * L is a generic register pair, while l means eax:rdx
 110  */
 111 #define MONO_ARCH_INST_IS_REGPAIR(desc) (desc == 'l' || desc == 'L')
 112 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (desc == 'l' ? X86_EDX : -1)
 113
 114 /* must be at a power of 2 and >= 8 */
 115 #define MONO_ARCH_FRAME_ALIGNMENT 16
 116
 117 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
 118  * reproduceable results for benchmarks */
 119 #define MONO_ARCH_CODE_ALIGNMENT 32
 120
 121 #define MONO_ARCH_RETREG1 X86_EAX
 122 #define MONO_ARCH_RETREG2 X86_EDX
 123
 124 struct MonoLMF {
 125         /* Offset by 1 if this is a trampoline LMF frame */
 126         guint32    previous_lmf;
 127         gpointer    lmf_addr;
 128         /* Only set in trampoline LMF frames */
 129         MonoMethod *method;
 130         /* Only set in trampoline LMF frames */
 131         guint32     esp;
 132         guint32     ebx;
 133         guint32     edi;
 134         guint32     esi;
 135         guint32     ebp;
 136         guint32     eip;
 137 };
 138
 139 typedef struct {
 140         gboolean need_stack_frame_inited;
 141         gboolean need_stack_frame;
 142 } MonoCompileArch;
 143
 144 #if defined(__FreeBSD__) || defined(__APPLE__)
 145 #include <ucontext.h>
 146 #endif
 147
 148 #if defined(__FreeBSD__)
 149         #define UCONTEXT_REG_EAX(ctx) ((ctx)->uc_mcontext.mc_eax)
 150         #define UCONTEXT_REG_EBX(ctx) ((ctx)->uc_mcontext.mc_ebx)
 151         #define UCONTEXT_REG_ECX(ctx) ((ctx)->uc_mcontext.mc_ecx)
 152         #define UCONTEXT_REG_EDX(ctx) ((ctx)->uc_mcontext.mc_edx)
 153         #define UCONTEXT_REG_EBP(ctx) ((ctx)->uc_mcontext.mc_ebp)
 154         #define UCONTEXT_REG_ESP(ctx) ((ctx)->uc_mcontext.mc_esp)
 155         #define UCONTEXT_REG_ESI(ctx) ((ctx)->uc_mcontext.mc_esi)
 156         #define UCONTEXT_REG_EDI(ctx) ((ctx)->uc_mcontext.mc_edi)
 157         #define UCONTEXT_REG_EIP(ctx) ((ctx)->uc_mcontext.mc_eip)
 158 #elif defined(__APPLE__) && defined(_STRUCT_MCONTEXT)
 159         #define UCONTEXT_REG_EAX(ctx) ((ctx)->uc_mcontext->__ss.__eax)
 160         #define UCONTEXT_REG_EBX(ctx) ((ctx)->uc_mcontext->__ss.__ebx)
 161         #define UCONTEXT_REG_ECX(ctx) ((ctx)->uc_mcontext->__ss.__ecx)
 162         #define UCONTEXT_REG_EDX(ctx) ((ctx)->uc_mcontext->__ss.__edx)
 163         #define UCONTEXT_REG_EBP(ctx) ((ctx)->uc_mcontext->__ss.__ebp)
 164         #define UCONTEXT_REG_ESP(ctx) ((ctx)->uc_mcontext->__ss.__esp)
 165         #define UCONTEXT_REG_ESI(ctx) ((ctx)->uc_mcontext->__ss.__esi)
 166         #define UCONTEXT_REG_EDI(ctx) ((ctx)->uc_mcontext->__ss.__edi)
 167         #define UCONTEXT_REG_EIP(ctx) ((ctx)->uc_mcontext->__ss.__eip)
 168 #elif defined(__APPLE__) && !defined(_STRUCT_MCONTEXT)
 169         #define UCONTEXT_REG_EAX(ctx) ((ctx)->uc_mcontext->ss.eax)
 170         #define UCONTEXT_REG_EBX(ctx) ((ctx)->uc_mcontext->ss.ebx)
 171         #define UCONTEXT_REG_ECX(ctx) ((ctx)->uc_mcontext->ss.ecx)
 172         #define UCONTEXT_REG_EDX(ctx) ((ctx)->uc_mcontext->ss.edx)
 173         #define UCONTEXT_REG_EBP(ctx) ((ctx)->uc_mcontext->ss.ebp)
 174         #define UCONTEXT_REG_ESP(ctx) ((ctx)->uc_mcontext->ss.esp)
 175         #define UCONTEXT_REG_ESI(ctx) ((ctx)->uc_mcontext->ss.esi)
 176         #define UCONTEXT_REG_EDI(ctx) ((ctx)->uc_mcontext->ss.edi)
 177         #define UCONTEXT_REG_EIP(ctx) ((ctx)->uc_mcontext->ss.eip)
 178 #elif defined(__NetBSD__)
 179         #define UCONTEXT_REG_EAX(ctx) ((ctx)->uc_mcontext.__gregs [_REG_EAX])
 180         #define UCONTEXT_REG_EBX(ctx) ((ctx)->uc_mcontext.__gregs [_REG_EBX])
 181         #define UCONTEXT_REG_ECX(ctx) ((ctx)->uc_mcontext.__gregs [_REG_ECX])
 182         #define UCONTEXT_REG_EDX(ctx) ((ctx)->uc_mcontext.__gregs [_REG_EDX])
 183         #define UCONTEXT_REG_EBP(ctx) ((ctx)->uc_mcontext.__gregs [_REG_EBP])
 184         #define UCONTEXT_REG_ESP(ctx) ((ctx)->uc_mcontext.__gregs [_REG_ESP])
 185         #define UCONTEXT_REG_ESI(ctx) ((ctx)->uc_mcontext.__gregs [_REG_ESI])
 186         #define UCONTEXT_REG_EDI(ctx) ((ctx)->uc_mcontext.__gregs [_REG_EDI])
 187         #define UCONTEXT_REG_EIP(ctx) ((ctx)->uc_mcontext.__gregs [_REG_EIP])
 188 #else
 189         #define UCONTEXT_REG_EAX(ctx) ((ctx)->uc_mcontext.gregs [REG_EAX])
 190         #define UCONTEXT_REG_EBX(ctx) ((ctx)->uc_mcontext.gregs [REG_EBX])
 191         #define UCONTEXT_REG_ECX(ctx) ((ctx)->uc_mcontext.gregs [REG_ECX])
 192         #define UCONTEXT_REG_EDX(ctx) ((ctx)->uc_mcontext.gregs [REG_EDX])
 193         #define UCONTEXT_REG_EBP(ctx) ((ctx)->uc_mcontext.gregs [REG_EBP])
 194         #define UCONTEXT_REG_ESP(ctx) ((ctx)->uc_mcontext.gregs [REG_ESP])
 195         #define UCONTEXT_REG_ESI(ctx) ((ctx)->uc_mcontext.gregs [REG_ESI])
 196         #define UCONTEXT_REG_EDI(ctx) ((ctx)->uc_mcontext.gregs [REG_EDI])
 197         #define UCONTEXT_REG_EIP(ctx) ((ctx)->uc_mcontext.gregs [REG_EIP])
 198 #endif
 199
 200 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
 201 # define SC_EAX sc_eax
 202 # define SC_EBX sc_ebx
 203 # define SC_ECX sc_ecx
 204 # define SC_EDX sc_edx
 205 # define SC_EBP sc_ebp
 206 # define SC_EIP sc_eip
 207 # define SC_ESP sc_esp
 208 # define SC_EDI sc_edi
 209 # define SC_ESI sc_esi
 210 #else
 211 # define SC_EAX eax
 212 # define SC_EBX ebx
 213 # define SC_ECX ecx
 214 # define SC_EDX edx
 215 # define SC_EBP ebp
 216 # define SC_EIP eip
 217 # define SC_ESP esp
 218 # define SC_EDI edi
 219 # define SC_ESI esi
 220 #endif
 221
 222 typedef struct {
 223         guint32 eax;
 224         guint32 ebx;
 225         guint32 ecx;
 226         guint32 edx;
 227         guint32 ebp;
 228         guint32 esp;
 229     guint32 esi;
 230         guint32 edi;
 231         guint32 eip;
 232 } MonoContext;
 233
 234 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->eip = (long)(ip); } while (0);
 235 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->ebp = (long)(bp); } while (0);
 236 #define MONO_CONTEXT_SET_SP(ctx,sp) do { (ctx)->esp = (long)(sp); } while (0);
 237
 238 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->eip))
 239 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->ebp))
 240 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->esp))
 241
 242 #ifdef _MSC_VER
 243
 244 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx, start_func) do { \
 245     unsigned int stackptr; \
 246         mono_arch_flush_register_windows (); \
 247     { \
 248            __asm mov stackptr, ebp \
 249     } \
 250         MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
 251         MONO_CONTEXT_SET_BP ((ctx), stackptr); \
 252         MONO_CONTEXT_SET_SP ((ctx), stackptr); \
 253 } while (0)
 254
 255 #else
 256
 257 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 258                 mono_arch_flush_register_windows ();    \
 259                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 260                 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0));       \
 261                 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0));       \
 262         } while (0)
 263
 264 #endif
 265
 266 /* Enables OP_LSHL, OP_LSHL_IMM, OP_LSHR, OP_LSHR_IMM, OP_LSHR_UN, OP_LSHR_UN_IMM */
 267 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS
 268
 269 #define MONO_ARCH_BIGMUL_INTRINS 1
 270 #define MONO_ARCH_NEED_DIV_CHECK 1
 271 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW 1
 272 #define MONO_ARCH_HAVE_INVALIDATE_METHOD 1
 273 #define MONO_ARCH_NEED_GOT_VAR 1
 274 #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION 1
 275 #define MONO_ARCH_ENABLE_EMIT_STATE_OPT 1
 276 #define MONO_ARCH_ENABLE_MONO_LMF_VAR 1
 277 #define MONO_ARCH_HAVE_CREATE_TRAMPOLINE_FROM_TOKEN 1
 278 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE 1
 279 #define MONO_ARCH_HAVE_ATOMIC_ADD 1
 280 #define MONO_ARCH_HAVE_ATOMIC_EXCHANGE 1
 281 #define MONO_ARCH_HAVE_ATOMIC_CAS_IMM 1
 282 #define MONO_ARCH_HAVE_IMT 1
 283 #define MONO_ARCH_HAVE_TLS_GET 1
 284 #define MONO_ARCH_IMT_REG X86_EDX
 285 #define MONO_ARCH_VTABLE_REG X86_EDX
 286 #define MONO_ARCH_COMMON_VTABLE_TRAMPOLINE 1
 287 #define MONO_ARCH_RGCTX_REG X86_EDX
 288 #define MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK 1
 289 #define MONO_ARCH_HAVE_LIVERANGE_OPS 1
 290 #define MONO_ARCH_HAVE_XP_UNWIND 1
 291 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
 292 #if defined(__linux__) && !defined(HAVE_MOVING_COLLECTOR)
 293 #define MONO_ARCH_MONITOR_OBJECT_REG X86_EAX
 294 #endif
 295
 296 #define MONO_ARCH_HAVE_CMOV_OPS 1
 297
 298 #ifdef MONO_ARCH_SIMD_INTRINSICS
 299 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
 300 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 301 #endif
 302
 303 #if !defined(__APPLE__)
 304 #define MONO_ARCH_AOT_SUPPORTED 1
 305 #endif
 306
 307 #if defined(__linux__) || defined(__sun)
 308 #define MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH 1
 309 #endif
 310
 311 /* Used for optimization, not complete */
 312 #define MONO_ARCH_IS_OP_MEMBASE(opcode) ((opcode) == OP_X86_PUSH_MEMBASE)
 313
 314 #define MONO_ARCH_EMIT_BOUNDS_CHECK(cfg, array_reg, offset, index_reg) do { \
 315             MonoInst *inst; \
 316             MONO_INST_NEW ((cfg), inst, OP_X86_COMPARE_MEMBASE_REG); \
 317             inst->inst_basereg = array_reg; \
 318             inst->inst_offset = offset; \
 319             inst->sreg2 = index_reg; \
 320             MONO_ADD_INS ((cfg)->cbb, inst); \
 321                         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException"); \
 322         } while (0)
 323
 324 typedef struct {
 325         guint8 *address;
 326         guint8 saved_byte;
 327 } MonoBreakpointInfo;
 328
 329 extern MonoBreakpointInfo mono_breakpoint_info [MONO_BREAKPOINT_ARRAY_SIZE];
 330
 331 guint8*
 332 mono_x86_emit_tls_get (guint8* code, int dreg, int tls_offset) MONO_INTERNAL;
 333
 334 #endif /* __MONO_MINI_X86_H__ */
 335