mono/mini/mini-arm64.h

   1 /**
   2  * \file
   3  *
   4  * Copyright 2013 Xamarin Inc
   5  *
   6  * Based on mini-arm.h:
   7  *
   8  * Copyright 2011 Xamarin Inc
   9  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  10  */
  11
  12 #ifndef __MONO_MINI_ARM64_H__
  13 #define __MONO_MINI_ARM64_H__
  14
  15 #include <mono/arch/arm64/arm64-codegen.h>
  16 #include <mono/mini/mini-arm64-gsharedvt.h>
  17
  18 #define MONO_ARCH_CPU_SPEC mono_arm64_cpu_desc
  19
  20 #define MONO_MAX_IREGS 32
  21 #define MONO_MAX_FREGS 32
  22
  23 #define MONO_CONTEXT_SET_LLVM_EXC_REG(ctx, exc) do { (ctx)->regs [0] = (gsize)exc; } while (0)
  24
  25 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {      \
  26                 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0));       \
  27                 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0));       \
  28                 MONO_CONTEXT_SET_IP ((ctx), (func));    \
  29         } while (0)
  30
  31 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf)
  32
  33 /* Parameters used by the register allocator */
  34 /* r0..r7, r9..r14 (r15 is the imt/rgctx reg) */
  35 #define MONO_ARCH_CALLEE_REGS 0xfeff
  36 /* r19..r28 */
  37 #define MONO_ARCH_CALLEE_SAVED_REGS (0x3ff << 19)
  38
  39 /* v16/v17 is reserved for a scratch reg */
  40 #define MONO_ARCH_CALLEE_FREGS 0xfffc00ff
  41 /* v8..v15 */
  42 #define MONO_ARCH_CALLEE_SAVED_FREGS 0xff00
  43
  44 #define MONO_ARCH_USE_FPSTACK FALSE
  45
  46 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
  47
  48 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc) == 'a' ? ARMREG_R0 : -1)
  49
  50 #define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
  51
  52 #define MONO_ARCH_INST_IS_FLOAT(desc) ((desc) == 'f')
  53
  54 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (-1)
  55
  56 #define MONO_ARCH_USE_FPSTACK FALSE
  57
  58 #define MONO_ARCH_FRAME_ALIGNMENT 16
  59
  60 #define MONO_ARCH_CODE_ALIGNMENT 32
  61
  62 /* callee saved regs + fp + sp */
  63 #define MONO_ARCH_LMF_REGS ((0x3ff << 19) | (1 << ARMREG_FP) | (1 << ARMREG_SP))
  64 #define MONO_ARCH_NUM_LMF_REGS (10 + 2)
  65 #define MONO_ARCH_FIRST_LMF_REG ARMREG_R19
  66 #define MONO_ARCH_LMF_REG_FP 10
  67 #define MONO_ARCH_LMF_REG_SP 11
  68
  69 struct MonoLMF {
  70         /*
  71          * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
  72          * the other fields are not valid.
  73          */
  74         gpointer    previous_lmf;
  75         gpointer    lmf_addr;
  76         mgreg_t    pc;
  77         mgreg_t    gregs [MONO_ARCH_NUM_LMF_REGS];
  78 };
  79
  80 /* Structure used by the sequence points in AOTed code */
  81 typedef struct {
  82         gpointer ss_trigger_page;
  83         gpointer bp_trigger_page;
  84         gpointer ss_tramp_addr;
  85         guint8* bp_addrs [MONO_ZERO_LEN_ARRAY];
  86 } SeqPointInfo;
  87
  88 #define PARAM_REGS 8
  89 #define FP_PARAM_REGS 8
  90
  91 typedef struct {
  92         mgreg_t res, res2;
  93         guint8 *ret;
  94         double fpregs [FP_PARAM_REGS];
  95         int n_fpargs, n_fpret, n_stackargs;
  96         guint8 buffer [256];
  97         /* This should come last as the structure is dynamically extended */
  98         /* The +1 is for r8 */
  99         mgreg_t regs [PARAM_REGS + 1];
 100 } DynCallArgs;
 101
 102 typedef struct {
 103         gpointer cinfo;
 104         int saved_gregs_offset;
 105         /* Points to arguments received on the stack */
 106         int args_reg;
 107         gboolean cond_branch_islands;
 108         gpointer vret_addr_loc;
 109         gpointer seq_point_info_var;
 110         gpointer ss_tramp_var;
 111         gpointer bp_tramp_var;
 112         guint8 *thunks;
 113         int thunks_size;
 114 } MonoCompileArch;
 115
 116 #define MONO_ARCH_EMULATE_FREM 1
 117 #define MONO_ARCH_NO_EMULATE_LONG_MUL_OPTS 1
 118 #define MONO_ARCH_EMULATE_LONG_MUL_OVF_OPTS 1
 119 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS 1
 120 #define MONO_ARCH_NEED_DIV_CHECK 1
 121 #define MONO_ARCH_EMULATE_MUL_OVF 1
 122 #define MONO_ARCH_HAVE_OP_TAILCALL_MEMBASE 1
 123 #define MONO_ARCH_HAVE_OP_TAILCALL_REG 1
 124 #define MONO_ARCH_RGCTX_REG ARMREG_R15
 125 #define MONO_ARCH_IMT_REG MONO_ARCH_RGCTX_REG
 126 #define MONO_ARCH_VTABLE_REG ARMREG_R0
 127 #define MONO_ARCH_HAVE_GENERALIZED_IMT_TRAMPOLINE 1
 128 #define MONO_ARCH_USE_SIGACTION 1
 129 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
 130 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG 1
 131 #define MONO_ARCH_GSHARED_SUPPORTED 1
 132 #define MONO_ARCH_INTERPRETER_SUPPORTED 1
 133 #define MONO_ARCH_HAVE_INTERP_ENTRY_TRAMPOLINE 1
 134 #define MONO_ARCH_AOT_SUPPORTED 1
 135 #define MONO_ARCH_LLVM_SUPPORTED 1
 136 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
 137 #define MONO_ARCH_HAVE_EXCEPTIONS_INIT 1
 138 #define MONO_ARCH_HAVE_GET_TRAMPOLINES 1
 139 #define MONO_ARCH_DYN_CALL_SUPPORTED 1
 140 #define MONO_ARCH_DYN_CALL_PARAM_AREA 0
 141 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
 142 #define MONO_ARCH_GSHAREDVT_SUPPORTED 1
 143 #define MONO_ARCH_HAVE_SETUP_RESUME_FROM_SIGNAL_HANDLER_CTX 1
 144 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
 145 #define MONO_ARCH_HAVE_GENERAL_RGCTX_LAZY_FETCH_TRAMPOLINE 1
 146 #define MONO_ARCH_HAVE_OBJC_GET_SELECTOR 1
 147 #define MONO_ARCH_HAVE_SDB_TRAMPOLINES 1
 148 #define MONO_ARCH_HAVE_PATCH_CODE_NEW 1
 149 #define MONO_ARCH_HAVE_OP_GENERIC_CLASS_INIT 1
 150 #define MONO_ARCH_HAVE_OPCODE_NEEDS_EMULATION 1
 151 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 152 #define MONO_ARCH_FLOAT32_SUPPORTED 1
 153 #define MONO_ARCH_HAVE_INTERP_PINVOKE_TRAMP 1
 154
 155 // Does the ABI have a volatile non-parameter register, so tailcall
 156 // can pass context to generics or interfaces?
 157 #define MONO_ARCH_HAVE_VOLATILE_NON_PARAM_REGISTER 1
 158
 159 #ifdef TARGET_IOS
 160
 161 #define MONO_ARCH_REDZONE_SIZE 128
 162
 163 #else
 164
 165 #define MONO_ARCH_REDZONE_SIZE 0
 166
 167 #endif
 168
 169 #if defined(TARGET_APPLETVOS) || defined(TARGET_IOS)
 170 #define MONO_ARCH_HAVE_UNWIND_BACKTRACE 1
 171 #endif
 172
 173 /* Relocations */
 174 #define MONO_R_ARM64_B 1
 175 #define MONO_R_ARM64_BCC 2
 176 #define MONO_R_ARM64_IMM 3
 177 #define MONO_R_ARM64_BL 4
 178 #define MONO_R_ARM64_BL_SHORT 5
 179 #define MONO_R_ARM64_CBZ 6
 180
 181
 182 typedef enum {
 183         ArgInIReg,
 184         ArgInFReg,
 185         ArgInFRegR4,
 186         ArgOnStack,
 187         ArgOnStackR8,
 188         ArgOnStackR4,
 189         /*
 190          * Vtype passed in consecutive int registers.
 191          * ainfo->reg is the firs register,
 192          * ainfo->nregs is the number of registers,
 193          * ainfo->size is the size of the structure.
 194          */
 195         ArgVtypeInIRegs,
 196         ArgVtypeByRef,
 197         ArgVtypeByRefOnStack,
 198         ArgVtypeOnStack,
 199         ArgHFA,
 200         ArgNone
 201 } ArgStorage;
 202
 203 typedef struct {
 204         ArgStorage storage;
 205         int reg;
 206         /* ArgOnStack */
 207         int offset;
 208         /* ArgVtypeInIRegs/ArgHFA */
 209         int nregs, size;
 210         /* ArgHFA */
 211         int esize;
 212         /* ArgHFA */
 213         /* The offsets of the float values inside the arg */
 214         guint16 foffsets [4];
 215         /* ArgOnStack */
 216         int slot_size;
 217         /* hfa */
 218         int nfregs_to_skip;
 219         gboolean sign;
 220         gboolean gsharedvt;
 221         gboolean hfa;
 222 } ArgInfo;
 223
 224 typedef struct {
 225         int nargs;
 226         int gr, fr, stack_usage;
 227         gboolean pinvoke;
 228         ArgInfo ret;
 229         ArgInfo sig_cookie;
 230         ArgInfo args [1];
 231 } CallInfo;
 232
 233 typedef struct {
 234         /* General registers + ARMREG_R8 for indirect returns */
 235         mgreg_t gregs [PARAM_REGS + 1];
 236         /* Floating registers */
 237         double fregs [FP_PARAM_REGS];
 238         /* Stack usage, used for passing params on stack */
 239         guint32 stack_size;
 240         guint8* stack;
 241 } CallContext;
 242
 243 guint8* mono_arm_emit_imm64 (guint8 *code, int dreg, gint64 imm);
 244
 245 guint8* mono_arm_emit_ldrx (guint8 *code, int rt, int rn, int imm);
 246
 247 guint8* mono_arm_emit_destroy_frame (guint8 *code, int stack_offset, guint64 temp_regs);
 248
 249 guint8* mono_arm_emit_store_regset (guint8 *code, guint64 regs, int basereg, int offset);
 250
 251 guint8* mono_arm_emit_store_regarray (guint8 *code, guint64 regs, int basereg, int offset);
 252
 253 guint8* mono_arm_emit_load_regarray (guint8 *code, guint64 regs, int basereg, int offset);
 254
 255 /* MonoJumpInfo **ji */
 256 guint8* mono_arm_emit_aotconst (gpointer ji, guint8 *code, guint8 *code_start, int dreg, guint32 patch_type, gconstpointer data);
 257
 258 void mono_arm_patch (guint8 *code, guint8 *target, int relocation);
 259
 260 void mono_arm_throw_exception (gpointer arg, mgreg_t pc, mgreg_t *int_regs, gdouble *fp_regs, gboolean corlib, gboolean rethrow);
 261
 262 void mono_arm_gsharedvt_init (void);
 263
 264 GSList* mono_arm_get_exception_trampolines (gboolean aot);
 265
 266 void mono_arm_resume_unwind (gpointer arg, mgreg_t pc, mgreg_t *int_regs, gdouble *fp_regs, gboolean corlib, gboolean rethrow);
 267
 268 CallInfo* mono_arch_get_call_info (MonoMemPool *mp, MonoMethodSignature *sig);
 269
 270 #endif /* __MONO_MINI_ARM64_H__ */