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 */
37 #if defined( __linux__) || defined(__sun) || defined(__APPLE__) || defined(__NetBSD__) || \
38 defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__OpenBSD__)
39 #define MONO_ARCH_USE_SIGACTION
42 #if defined(HOST_WATCHOS)
43 #undef MONO_ARCH_USE_SIGACTION
48 #ifdef HAVE_WORKING_SIGALTSTACK
50 * solaris doesn't have pthread_getattr_np () needed by the sigaltstack setup
54 #define MONO_ARCH_SIGSEGV_ON_ALTSTACK
56 /* Haiku doesn't have SA_SIGINFO */
58 #define MONO_ARCH_USE_SIGACTION
59 #endif /* __HAIKU__ */
61 #endif /* HAVE_WORKING_SIGALTSTACK */
62 #endif /* !HOST_WIN32 */
64 #define MONO_ARCH_SUPPORT_TASKLETS 1
67 #define MONO_ARCH_SIMD_INTRINSICS 1
68 #define MONO_ARCH_NEED_SIMD_BANK 1
71 /* we should lower this size and make sure we don't call heavy stack users in the segv handler */
72 #if defined(__APPLE__)
73 #define MONO_ARCH_SIGNAL_STACK_SIZE MINSIGSTKSZ
75 #define MONO_ARCH_SIGNAL_STACK_SIZE (16 * 1024)
77 #define MONO_ARCH_HAVE_RESTORE_STACK_SUPPORT 1
79 #define MONO_ARCH_CPU_SPEC mono_x86_desc
81 #define MONO_MAX_IREGS 8
82 #define MONO_MAX_FREGS 8
83 #define MONO_MAX_XREGS 8
85 /* Parameters used by the register allocator */
86 #define MONO_ARCH_CALLEE_REGS X86_CALLEE_REGS
87 #define MONO_ARCH_CALLEE_SAVED_REGS X86_CALLER_REGS
89 #define MONO_ARCH_CALLEE_FREGS (0xff & ~(regmask (MONO_ARCH_FPSTACK_SIZE)))
90 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
92 /* All registers are clobered by a call */
93 #define MONO_ARCH_CALLEE_XREGS (0xff & ~(regmask (MONO_MAX_XREGS)))
94 #define MONO_ARCH_CALLEE_SAVED_XREGS 0
96 #define MONO_ARCH_USE_FPSTACK TRUE
97 #define MONO_ARCH_FPSTACK_SIZE 6
99 #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)))))
101 #define MONO_ARCH_INST_FIXED_MASK(desc) ((desc == 'y') ? (X86_BYTE_REGS) : 0)
103 /* RDX is clobbered by the opcode implementation before accessing sreg2 */
105 * Originally this contained X86_EDX for div/rem opcodes, but that led to unsolvable
106 * situations since there are only 3 usable registers for local register allocation.
107 * Instead, we handle the sreg2==edx case in the opcodes.
109 #define MONO_ARCH_INST_SREG2_MASK(ins) 0
112 * L is a generic register pair, while l means eax:rdx
114 #define MONO_ARCH_INST_IS_REGPAIR(desc) (desc == 'l' || desc == 'L')
115 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (desc == 'l' ? X86_EDX : -1)
117 /* must be at a power of 2 and >= 8 */
118 #define MONO_ARCH_FRAME_ALIGNMENT 16
120 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
121 * reproduceable results for benchmarks */
122 #define MONO_ARCH_CODE_ALIGNMENT 32
124 /*This is the max size of the locals area of a given frame. I think 1MB is a safe default for now*/
125 #define MONO_ARCH_MAX_FRAME_SIZE 0x100000
127 /*This is how much a try block must be extended when is is preceeded by a Monitor.Enter() call.
128 It's 4 bytes as this is how many bytes + 1 that 'add 0x10, %esp' takes. It is used to pop the arguments from
129 the monitor.enter call and must be already protected.*/
130 #define MONO_ARCH_MONITOR_ENTER_ADJUSTMENT 4
134 * If the lowest bit is set to 1, then this is a trampoline LMF frame.
135 * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
136 * the other fields are not valid.
138 guint32 previous_lmf;
140 /* Only set in trampoline LMF frames */
142 /* Only set in trampoline LMF frames */
152 gboolean need_stack_frame_inited;
153 gboolean need_stack_frame;
154 int sp_fp_offset, param_area_size;
156 gpointer ss_tramp_var;
157 gpointer bp_tramp_var;
160 #define MONO_CONTEXT_SET_LLVM_EXC_REG(ctx, exc) do { (ctx)->eax = (gsize)exc; } while (0)
164 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx, start_func) do { \
165 unsigned int stackptr; \
166 mono_arch_flush_register_windows (); \
168 __asm mov stackptr, ebp \
170 MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
171 MONO_CONTEXT_SET_BP ((ctx), stackptr); \
172 MONO_CONTEXT_SET_SP ((ctx), stackptr); \
177 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do { \
178 mono_arch_flush_register_windows (); \
179 MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
180 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0)); \
181 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0)); \
186 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
188 /* Enables OP_LSHL, OP_LSHL_IMM, OP_LSHR, OP_LSHR_IMM, OP_LSHR_UN, OP_LSHR_UN_IMM */
189 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS
191 #define MONO_ARCH_NEED_DIV_CHECK 1
192 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW 1
193 #define MONO_ARCH_HAVE_INVALIDATE_METHOD 1
194 #define MONO_ARCH_NEED_GOT_VAR 1
196 /* X86 uses jit_tls->lmf (See emit_push_lmf ()) */
197 #define MONO_ARCH_ENABLE_MONO_LMF_VAR 1
199 #define MONO_ARCH_IMT_REG X86_EDX
200 #define MONO_ARCH_VTABLE_REG X86_EDX
201 #define MONO_ARCH_RGCTX_REG MONO_ARCH_IMT_REG
202 #define MONO_ARCH_EXC_REG X86_EAX
203 #define MONO_ARCH_HAVE_GENERALIZED_IMT_TRAMPOLINE 1
204 #define MONO_ARCH_HAVE_LIVERANGE_OPS 1
205 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
206 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
207 #define MONO_ARCH_GOT_REG X86_EBX
208 #define MONO_ARCH_HAVE_GET_TRAMPOLINES 1
209 #define MONO_ARCH_HAVE_GENERAL_RGCTX_LAZY_FETCH_TRAMPOLINE 1
211 #define MONO_ARCH_HAVE_CMOV_OPS 1
213 #ifdef MONO_ARCH_SIMD_INTRINSICS
214 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
217 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
219 #define MONO_ARCH_AOT_SUPPORTED 1
221 #define MONO_ARCH_GSHARED_SUPPORTED 1
222 #define MONO_ARCH_LLVM_SUPPORTED 1
224 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
226 #define MONO_ARCH_HAVE_EXCEPTIONS_INIT 1
227 #define MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD 1
229 #define MONO_ARCH_HAVE_CARD_TABLE_WBARRIER 1
230 #define MONO_ARCH_HAVE_SETUP_RESUME_FROM_SIGNAL_HANDLER_CTX 1
231 #define MONO_ARCH_GC_MAPS_SUPPORTED 1
232 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG 1
233 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
234 #define MONO_ARCH_GSHAREDVT_SUPPORTED 1
235 #define MONO_ARCH_HAVE_OP_TAIL_CALL 1
236 #define MONO_ARCH_HAVE_TRANSLATE_TLS_OFFSET 1
237 #define MONO_ARCH_HAVE_DUMMY_INIT 1
238 #define MONO_ARCH_HAVE_SDB_TRAMPOLINES 1
239 #define MONO_ARCH_HAVE_PATCH_CODE_NEW 1
241 /* Used for optimization, not complete */
242 #define MONO_ARCH_IS_OP_MEMBASE(opcode) ((opcode) == OP_X86_PUSH_MEMBASE)
244 #define MONO_ARCH_EMIT_BOUNDS_CHECK(cfg, array_reg, offset, index_reg) do { \
246 MONO_INST_NEW ((cfg), inst, OP_X86_COMPARE_MEMBASE_REG); \
247 inst->inst_basereg = array_reg; \
248 inst->inst_offset = offset; \
249 inst->sreg2 = index_reg; \
250 MONO_ADD_INS ((cfg)->cbb, inst); \
251 MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException"); \
254 /* Return value marshalling for calls between gsharedvt and normal code */
256 GSHAREDVT_RET_NONE = 0,
257 GSHAREDVT_RET_IREGS = 1,
258 GSHAREDVT_RET_DOUBLE_FPSTACK = 2,
259 GSHAREDVT_RET_FLOAT_FPSTACK = 3,
260 GSHAREDVT_RET_STACK_POP = 4,
261 GSHAREDVT_RET_I1 = 5,
262 GSHAREDVT_RET_U1 = 6,
263 GSHAREDVT_RET_I2 = 7,
264 GSHAREDVT_RET_U2 = 8,
265 GSHAREDVT_RET_IREG = 9
266 } GSharedVtRetMarshal;
269 /* Method address to call */
271 /* The trampoline reads this, so keep the size explicit */
273 /* If ret_marshal != NONE, this is the stack slot of the vret arg, else -1 */
275 /* The stack slot where the return value will be stored */
277 int stack_usage, map_count;
278 /* If not -1, then make a virtual call using this vtable offset */
280 /* If 1, make an indirect call to the address in the rgctx reg */
282 /* Whenever this is a in or an out call */
284 int map [MONO_ZERO_LEN_ARRAY];
295 /* gsharedvt argument passed by addr */
307 /* Only if storage == ArgValuetypeInReg */
308 ArgStorage pair_storage [2];
310 guint8 pass_empty_struct : 1; // Set in scenarios when empty structs needs to be represented as argument.
318 gboolean need_stack_align;
319 guint32 stack_align_amount;
320 gboolean vtype_retaddr;
321 /* The index of the vret arg in the argument list */
324 /* Argument space popped by the callee */
325 int callee_stack_pop;
332 mono_x86_get_this_arg_offset (MonoMethodSignature *sig);
335 mono_x86_throw_exception (mgreg_t *regs, MonoObject *exc,
336 mgreg_t eip, gboolean rethrow);
339 mono_x86_throw_corlib_exception (mgreg_t *regs, guint32 ex_token_index,
340 mgreg_t eip, gint32 pc_offset);
343 mono_x86_patch (unsigned char* code, gpointer target);
346 mono_x86_start_gsharedvt_call (GSharedVtCallInfo *info, gpointer *caller, gpointer *callee, gpointer mrgctx_reg);
349 mono_arch_get_call_info (MonoMemPool *mp, MonoMethodSignature *sig);
351 #endif /* __MONO_MINI_X86_H__ */