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 PLATFORM_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 /* PLATFORM_WIN32 */
  46
  47 #if defined( __linux__) || defined(__sun) || defined(__APPLE__) || defined(__NetBSD__) || defined(__FreeBSD__)
  48 #define MONO_ARCH_USE_SIGACTION
  49 #endif
  50
  51 #ifndef PLATFORM_WIN32
  52
  53 #ifdef HAVE_WORKING_SIGALTSTACK
  54 /*
  55  * solaris doesn't have pthread_getattr_np () needed by the sigaltstack setup
  56  * code.
  57  */
  58 #ifndef __sun
  59 #define MONO_ARCH_SIGSEGV_ON_ALTSTACK
  60 #endif
  61 #define MONO_ARCH_USE_SIGACTION
  62
  63 #endif /* HAVE_WORKING_SIGALTSTACK */
  64 #endif /* !PLATFORM_WIN32 */
  65
  66 #define MONO_ARCH_SUPPORT_SIMD_INTRINSICS 1
  67 #define MONO_ARCH_SUPPORT_TASKLETS 1
  68
  69 #ifndef DISABLE_SIMD
  70 #define MONO_ARCH_SIMD_INTRINSICS 1
  71 #define MONO_ARCH_NEED_SIMD_BANK 1
  72 #endif
  73
  74 /* we should lower this size and make sure we don't call heavy stack users in the segv handler */
  75 #define MONO_ARCH_SIGNAL_STACK_SIZE (16 * 1024)
  76 #define MONO_ARCH_HAVE_RESTORE_STACK_SUPPORT 1
  77
  78 #define MONO_ARCH_CPU_SPEC x86_desc
  79
  80 #define MONO_MAX_IREGS 8
  81 #define MONO_MAX_FREGS 8
  82 #define MONO_MAX_XREGS 8
  83
  84 /* Parameters used by the register allocator */
  85 #define MONO_ARCH_CALLEE_REGS X86_CALLEE_REGS
  86 #define MONO_ARCH_CALLEE_SAVED_REGS X86_CALLER_REGS
  87
  88 #define MONO_ARCH_CALLEE_FREGS (0xff & ~(regmask (MONO_ARCH_FPSTACK_SIZE)))
  89 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
  90
  91 /* All registers are clobered by a call */
  92 #define MONO_ARCH_CALLEE_XREGS (0xff & ~(regmask (MONO_MAX_XREGS)))
  93 #define MONO_ARCH_CALLEE_SAVED_XREGS 0
  94
  95 #define MONO_ARCH_USE_FPSTACK TRUE
  96 #define MONO_ARCH_FPSTACK_SIZE 6
  97
  98 #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)))))
  99
 100 #define MONO_ARCH_INST_FIXED_MASK(desc) ((desc == 'y') ? (X86_BYTE_REGS) : 0)
 101
 102 /* RDX is clobbered by the opcode implementation before accessing sreg2 */
 103 /*
 104  * Originally this contained X86_EDX for div/rem opcodes, but that led to unsolvable
 105  * situations since there are only 3 usable registers for local register allocation.
 106  * Instead, we handle the sreg2==edx case in the opcodes.
 107  */
 108 #define MONO_ARCH_INST_SREG2_MASK(ins) 0
 109
 110 /*
 111  * L is a generic register pair, while l means eax:rdx
 112  */
 113 #define MONO_ARCH_INST_IS_REGPAIR(desc) (desc == 'l' || desc == 'L')
 114 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (desc == 'l' ? X86_EDX : -1)
 115
 116 /* must be at a power of 2 and >= 8 */
 117 #define MONO_ARCH_FRAME_ALIGNMENT 16
 118
 119 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
 120  * reproduceable results for benchmarks */
 121 #define MONO_ARCH_CODE_ALIGNMENT 32
 122
 123 #define MONO_ARCH_RETREG1 X86_EAX
 124 #define MONO_ARCH_RETREG2 X86_EDX
 125
 126 struct MonoLMF {
 127         /*
 128          * If the lowest bit is set to 1, then this is a trampoline LMF frame.
 129          * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
 130          * the other fields are not valid.
 131          */
 132         guint32    previous_lmf;
 133         gpointer    lmf_addr;
 134         /* Only set in trampoline LMF frames */
 135         MonoMethod *method;
 136         /* Only set in trampoline LMF frames */
 137         guint32     esp;
 138         guint32     ebx;
 139         guint32     edi;
 140         guint32     esi;
 141         guint32     ebp;
 142         guint32     eip;
 143 };
 144
 145 typedef struct {
 146         gboolean need_stack_frame_inited;
 147         gboolean need_stack_frame;
 148 } MonoCompileArch;
 149
 150 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
 151 # define SC_EAX sc_eax
 152 # define SC_EBX sc_ebx
 153 # define SC_ECX sc_ecx
 154 # define SC_EDX sc_edx
 155 # define SC_EBP sc_ebp
 156 # define SC_EIP sc_eip
 157 # define SC_ESP sc_esp
 158 # define SC_EDI sc_edi
 159 # define SC_ESI sc_esi
 160 #else
 161 # define SC_EAX eax
 162 # define SC_EBX ebx
 163 # define SC_ECX ecx
 164 # define SC_EDX edx
 165 # define SC_EBP ebp
 166 # define SC_EIP eip
 167 # define SC_ESP esp
 168 # define SC_EDI edi
 169 # define SC_ESI esi
 170 #endif
 171
 172 typedef struct {
 173         guint32 eax;
 174         guint32 ebx;
 175         guint32 ecx;
 176         guint32 edx;
 177         guint32 ebp;
 178         guint32 esp;
 179     guint32 esi;
 180         guint32 edi;
 181         guint32 eip;
 182 } MonoContext;
 183
 184 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->eip = (long)(ip); } while (0);
 185 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->ebp = (long)(bp); } while (0);
 186 #define MONO_CONTEXT_SET_SP(ctx,sp) do { (ctx)->esp = (long)(sp); } while (0);
 187
 188 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->eip))
 189 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->ebp))
 190 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->esp))
 191
 192 #ifdef _MSC_VER
 193
 194 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx, start_func) do { \
 195     unsigned int stackptr; \
 196         mono_arch_flush_register_windows (); \
 197     { \
 198            __asm mov stackptr, ebp \
 199     } \
 200         MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
 201         MONO_CONTEXT_SET_BP ((ctx), stackptr); \
 202         MONO_CONTEXT_SET_SP ((ctx), stackptr); \
 203 } while (0)
 204
 205 #else
 206
 207 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 208                 mono_arch_flush_register_windows ();    \
 209                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 210                 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0));       \
 211                 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0));       \
 212         } while (0)
 213
 214 #endif
 215
 216 /*
 217  * This structure is an extension of MonoLMF and contains extra information.
 218  */
 219 typedef struct {
 220         struct MonoLMF lmf;
 221         gboolean debugger_invoke;
 222         MonoContext ctx; /* if debugger_invoke is TRUE */
 223 } MonoLMFExt;
 224
 225 /* Enables OP_LSHL, OP_LSHL_IMM, OP_LSHR, OP_LSHR_IMM, OP_LSHR_UN, OP_LSHR_UN_IMM */
 226 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS
 227
 228 #define MONO_ARCH_BIGMUL_INTRINS 1
 229 #define MONO_ARCH_NEED_DIV_CHECK 1
 230 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW 1
 231 #define MONO_ARCH_HAVE_INVALIDATE_METHOD 1
 232 #define MONO_ARCH_NEED_GOT_VAR 1
 233 #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION 1
 234 #define MONO_ARCH_ENABLE_MONO_LMF_VAR 1
 235 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE 1
 236 #define MONO_ARCH_HAVE_ATOMIC_ADD 1
 237 #define MONO_ARCH_HAVE_ATOMIC_EXCHANGE 1
 238 #define MONO_ARCH_HAVE_ATOMIC_CAS 1
 239 #define MONO_ARCH_HAVE_IMT 1
 240 #define MONO_ARCH_HAVE_TLS_GET 1
 241 #define MONO_ARCH_IMT_REG X86_EDX
 242 #define MONO_ARCH_VTABLE_REG X86_EDX
 243 #define MONO_ARCH_RGCTX_REG X86_EDX
 244 #define MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK 1
 245 #define MONO_ARCH_HAVE_LIVERANGE_OPS 1
 246 #define MONO_ARCH_HAVE_XP_UNWIND 1
 247 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
 248 #if defined(__linux__) && !defined(HAVE_MOVING_COLLECTOR)
 249 #define MONO_ARCH_MONITOR_OBJECT_REG X86_EAX
 250 #endif
 251 #define MONO_ARCH_HAVE_STATIC_RGCTX_TRAMPOLINE 1
 252
 253 #define MONO_ARCH_HAVE_CMOV_OPS 1
 254
 255 #ifdef MONO_ARCH_SIMD_INTRINSICS
 256 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
 257 #endif
 258
 259 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 260
 261 #if !defined(__APPLE__)
 262 #define MONO_ARCH_AOT_SUPPORTED 1
 263 #endif
 264
 265 #if defined(__linux__) || defined(__sun)
 266 #define MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH 1
 267 #endif
 268
 269 #define MONO_ARCH_GSHARED_SUPPORTED 1
 270 //#define MONO_ARCH_HAVE_LLVM_IMT_TRAMPOLINE 1
 271 #ifndef PLATFORM_WIN32
 272 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
 273 #else
 274 #define DISABLE_DEBUGGER_AGENT 1
 275 #endif
 276 #define MONO_ARCH_HAVE_FIND_JIT_INFO_EXT 1
 277
 278 /* Used for optimization, not complete */
 279 #define MONO_ARCH_IS_OP_MEMBASE(opcode) ((opcode) == OP_X86_PUSH_MEMBASE)
 280
 281 #define MONO_ARCH_EMIT_BOUNDS_CHECK(cfg, array_reg, offset, index_reg) do { \
 282             MonoInst *inst; \
 283             MONO_INST_NEW ((cfg), inst, OP_X86_COMPARE_MEMBASE_REG); \
 284             inst->inst_basereg = array_reg; \
 285             inst->inst_offset = offset; \
 286             inst->sreg2 = index_reg; \
 287             MONO_ADD_INS ((cfg)->cbb, inst); \
 288                         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException"); \
 289         } while (0)
 290
 291 typedef struct {
 292         guint8 *address;
 293         guint8 saved_byte;
 294 } MonoBreakpointInfo;
 295
 296 extern MonoBreakpointInfo mono_breakpoint_info [MONO_BREAKPOINT_ARRAY_SIZE];
 297
 298 guint8*
 299 mono_x86_emit_tls_get (guint8* code, int dreg, int tls_offset) MONO_INTERNAL;
 300
 301 #endif /* __MONO_MINI_X86_H__ */
 302