1 #ifndef __MONO_MINI_X86_H__
2 #define __MONO_MINI_X86_H__
4 #include <mono/arch/x86/x86-codegen.h>
5 #include <mono/utils/mono-sigcontext.h>
6 #include <mono/utils/mono-context.h>
10 /* use SIG* defines if possible */
15 typedef void (* MonoW32ExceptionHandler) (int _dummy, EXCEPTION_POINTERS *info, void *context);
17 void win32_seh_init(void);
18 void win32_seh_cleanup(void);
19 void win32_seh_set_handler(int type, MonoW32ExceptionHandler handler);
33 LONG CALLBACK seh_handler(EXCEPTION_POINTERS* ep);
35 #endif /* HOST_WIN32 */
41 #endif /* __HAIKU__ */
43 #if defined( __linux__) || defined(__sun) || defined(__APPLE__) || defined(__NetBSD__) || \
44 defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__OpenBSD__)
45 #define MONO_ARCH_USE_SIGACTION
48 #if defined(HOST_WATCHOS)
49 #undef MONO_ARCH_USE_SIGACTION
54 #ifdef HAVE_WORKING_SIGALTSTACK
56 * solaris doesn't have pthread_getattr_np () needed by the sigaltstack setup
60 #define MONO_ARCH_SIGSEGV_ON_ALTSTACK
62 /* Haiku doesn't have SA_SIGINFO */
64 #define MONO_ARCH_USE_SIGACTION
65 #endif /* __HAIKU__ */
67 #endif /* HAVE_WORKING_SIGALTSTACK */
68 #endif /* !HOST_WIN32 */
70 #define MONO_ARCH_SUPPORT_TASKLETS 1
73 #define MONO_ARCH_SIMD_INTRINSICS 1
74 #define MONO_ARCH_NEED_SIMD_BANK 1
77 /* we should lower this size and make sure we don't call heavy stack users in the segv handler */
78 #if defined(__APPLE__)
79 #define MONO_ARCH_SIGNAL_STACK_SIZE MINSIGSTKSZ
81 #define MONO_ARCH_SIGNAL_STACK_SIZE (16 * 1024)
83 #define MONO_ARCH_HAVE_RESTORE_STACK_SUPPORT 1
85 #define MONO_ARCH_CPU_SPEC mono_x86_desc
87 #define MONO_MAX_IREGS 8
88 #define MONO_MAX_FREGS 8
89 #define MONO_MAX_XREGS 8
91 /* Parameters used by the register allocator */
92 #define MONO_ARCH_CALLEE_REGS X86_CALLEE_REGS
93 #define MONO_ARCH_CALLEE_SAVED_REGS X86_CALLER_REGS
95 #define MONO_ARCH_CALLEE_FREGS (0xff & ~(regmask (MONO_ARCH_FPSTACK_SIZE)))
96 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
98 /* All registers are clobered by a call */
99 #define MONO_ARCH_CALLEE_XREGS (0xff & ~(regmask (MONO_MAX_XREGS)))
100 #define MONO_ARCH_CALLEE_SAVED_XREGS 0
102 #define MONO_ARCH_USE_FPSTACK TRUE
103 #define MONO_ARCH_FPSTACK_SIZE 6
105 #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)))))
107 #define MONO_ARCH_INST_FIXED_MASK(desc) ((desc == 'y') ? (X86_BYTE_REGS) : 0)
109 /* RDX is clobbered by the opcode implementation before accessing sreg2 */
111 * Originally this contained X86_EDX for div/rem opcodes, but that led to unsolvable
112 * situations since there are only 3 usable registers for local register allocation.
113 * Instead, we handle the sreg2==edx case in the opcodes.
115 #define MONO_ARCH_INST_SREG2_MASK(ins) 0
118 * L is a generic register pair, while l means eax:rdx
120 #define MONO_ARCH_INST_IS_REGPAIR(desc) (desc == 'l' || desc == 'L')
121 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (desc == 'l' ? X86_EDX : -1)
123 /* must be at a power of 2 and >= 8 */
124 #define MONO_ARCH_FRAME_ALIGNMENT 16
126 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
127 * reproduceable results for benchmarks */
128 #define MONO_ARCH_CODE_ALIGNMENT 32
130 /*This is the max size of the locals area of a given frame. I think 1MB is a safe default for now*/
131 #define MONO_ARCH_MAX_FRAME_SIZE 0x100000
133 /*This is how much a try block must be extended when is is preceeded by a Monitor.Enter() call.
134 It's 4 bytes as this is how many bytes + 1 that 'add 0x10, %esp' takes. It is used to pop the arguments from
135 the monitor.enter call and must be already protected.*/
136 #define MONO_ARCH_MONITOR_ENTER_ADJUSTMENT 4
140 * If the lowest bit is set to 1, then this is a trampoline LMF frame.
141 * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
142 * the other fields are not valid.
144 guint32 previous_lmf;
146 /* Only set in trampoline LMF frames */
148 /* Only set in trampoline LMF frames */
158 gboolean need_stack_frame_inited;
159 gboolean need_stack_frame;
160 int sp_fp_offset, param_area_size;
162 gpointer ss_tramp_var;
163 gpointer bp_tramp_var;
166 #define MONO_CONTEXT_SET_LLVM_EXC_REG(ctx, exc) do { (ctx)->eax = (gsize)exc; } while (0)
170 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx, start_func) do { \
171 unsigned int stackptr; \
172 mono_arch_flush_register_windows (); \
174 __asm mov stackptr, ebp \
176 MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
177 MONO_CONTEXT_SET_BP ((ctx), stackptr); \
178 MONO_CONTEXT_SET_SP ((ctx), stackptr); \
183 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do { \
184 mono_arch_flush_register_windows (); \
185 MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
186 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0)); \
187 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0)); \
192 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
194 /* Enables OP_LSHL, OP_LSHL_IMM, OP_LSHR, OP_LSHR_IMM, OP_LSHR_UN, OP_LSHR_UN_IMM */
195 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS
197 #define MONO_ARCH_NEED_DIV_CHECK 1
198 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW 1
199 #define MONO_ARCH_HAVE_INVALIDATE_METHOD 1
200 #define MONO_ARCH_NEED_GOT_VAR 1
202 /* X86 uses jit_tls->lmf (See emit_push_lmf ()) */
203 #define MONO_ARCH_ENABLE_MONO_LMF_VAR 1
205 #define MONO_ARCH_HAVE_TLS_GET (mono_x86_have_tls_get ())
206 #define MONO_ARCH_IMT_REG X86_EDX
207 #define MONO_ARCH_VTABLE_REG X86_EDX
208 #define MONO_ARCH_RGCTX_REG MONO_ARCH_IMT_REG
209 #define MONO_ARCH_EXC_REG X86_EAX
210 #define MONO_ARCH_HAVE_GENERALIZED_IMT_TRAMPOLINE 1
211 #define MONO_ARCH_HAVE_LIVERANGE_OPS 1
212 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
213 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
214 #define MONO_ARCH_GOT_REG X86_EBX
215 #define MONO_ARCH_HAVE_GET_TRAMPOLINES 1
216 #define MONO_ARCH_HAVE_GENERAL_RGCTX_LAZY_FETCH_TRAMPOLINE 1
218 #define MONO_ARCH_HAVE_CMOV_OPS 1
220 #ifdef MONO_ARCH_SIMD_INTRINSICS
221 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
224 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
226 #define MONO_ARCH_AOT_SUPPORTED 1
228 #define MONO_ARCH_GSHARED_SUPPORTED 1
229 #define MONO_ARCH_LLVM_SUPPORTED 1
231 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
233 #define MONO_ARCH_HAVE_EXCEPTIONS_INIT 1
234 #define MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD 1
236 #define MONO_ARCH_HAVE_CARD_TABLE_WBARRIER 1
237 #define MONO_ARCH_HAVE_SETUP_RESUME_FROM_SIGNAL_HANDLER_CTX 1
238 #define MONO_ARCH_GC_MAPS_SUPPORTED 1
239 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG 1
240 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
241 #define MONO_ARCH_GSHAREDVT_SUPPORTED 1
242 #define MONO_ARCH_HAVE_OP_TAIL_CALL 1
243 #define MONO_ARCH_HAVE_TRANSLATE_TLS_OFFSET 1
244 #define MONO_ARCH_HAVE_TLS_GET_REG 1
245 #define MONO_ARCH_HAVE_DUMMY_INIT 1
246 #define MONO_ARCH_HAVE_SDB_TRAMPOLINES 1
247 #define MONO_ARCH_HAVE_PATCH_CODE_NEW 1
249 /* Used for optimization, not complete */
250 #define MONO_ARCH_IS_OP_MEMBASE(opcode) ((opcode) == OP_X86_PUSH_MEMBASE)
252 #define MONO_ARCH_EMIT_BOUNDS_CHECK(cfg, array_reg, offset, index_reg) do { \
254 MONO_INST_NEW ((cfg), inst, OP_X86_COMPARE_MEMBASE_REG); \
255 inst->inst_basereg = array_reg; \
256 inst->inst_offset = offset; \
257 inst->sreg2 = index_reg; \
258 MONO_ADD_INS ((cfg)->cbb, inst); \
259 MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException"); \
262 /* Return value marshalling for calls between gsharedvt and normal code */
264 GSHAREDVT_RET_NONE = 0,
265 GSHAREDVT_RET_IREGS = 1,
266 GSHAREDVT_RET_DOUBLE_FPSTACK = 2,
267 GSHAREDVT_RET_FLOAT_FPSTACK = 3,
268 GSHAREDVT_RET_STACK_POP = 4,
269 GSHAREDVT_RET_I1 = 5,
270 GSHAREDVT_RET_U1 = 6,
271 GSHAREDVT_RET_I2 = 7,
272 GSHAREDVT_RET_U2 = 8,
273 GSHAREDVT_RET_IREG = 9
274 } GSharedVtRetMarshal;
277 /* Method address to call */
279 /* The trampoline reads this, so keep the size explicit */
281 /* If ret_marshal != NONE, this is the stack slot of the vret arg, else -1 */
283 /* The stack slot where the return value will be stored */
285 int stack_usage, map_count;
286 /* If not -1, then make a virtual call using this vtable offset */
288 /* If 1, make an indirect call to the address in the rgctx reg */
290 /* Whenever this is a in or an out call */
292 int map [MONO_ZERO_LEN_ARRAY];
303 /* gsharedvt argument passed by addr */
315 /* Only if storage == ArgValuetypeInReg */
316 ArgStorage pair_storage [2];
318 guint8 pass_empty_struct : 1; // Set in scenarios when empty structs needs to be represented as argument.
326 gboolean need_stack_align;
327 guint32 stack_align_amount;
328 gboolean vtype_retaddr;
329 /* The index of the vret arg in the argument list */
332 /* Argument space popped by the callee */
333 int callee_stack_pop;
340 mono_x86_emit_tls_get (guint8* code, int dreg, int tls_offset);
343 mono_x86_emit_tls_get_reg (guint8* code, int dreg, int offset_reg);
346 mono_x86_get_this_arg_offset (MonoMethodSignature *sig);
349 mono_x86_have_tls_get (void);
352 mono_x86_throw_exception (mgreg_t *regs, MonoObject *exc,
353 mgreg_t eip, gboolean rethrow);
356 mono_x86_throw_corlib_exception (mgreg_t *regs, guint32 ex_token_index,
357 mgreg_t eip, gint32 pc_offset);
360 mono_x86_patch (unsigned char* code, gpointer target);
363 mono_x86_start_gsharedvt_call (GSharedVtCallInfo *info, gpointer *caller, gpointer *callee, gpointer mrgctx_reg);
366 mono_arch_get_call_info (MonoMemPool *mp, MonoMethodSignature *sig);
368 #endif /* __MONO_MINI_X86_H__ */