mono/mini/mini-arm64.h

   1 /*
   2  * mini-arm64.h
   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 #define MONO_ARCH_FPSTACK_SIZE 0
  46
  47 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
  48
  49 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc) == 'a' ? ARMREG_R0 : -1)
  50
  51 #define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
  52
  53 #define MONO_ARCH_INST_IS_FLOAT(desc) ((desc) == 'f')
  54
  55 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (-1)
  56
  57 #define MONO_ARCH_USE_FPSTACK FALSE
  58
  59 #define MONO_ARCH_FRAME_ALIGNMENT 16
  60
  61 #define MONO_ARCH_CODE_ALIGNMENT 32
  62
  63 /* callee saved regs + fp + sp */
  64 #define MONO_ARCH_LMF_REGS ((0x3ff << 19) | (1 << ARMREG_FP) | (1 << ARMREG_SP))
  65 #define MONO_ARCH_NUM_LMF_REGS (10 + 2)
  66 #define MONO_ARCH_FIRST_LMF_REG ARMREG_R19
  67 #define MONO_ARCH_LMF_REG_FP 10
  68 #define MONO_ARCH_LMF_REG_SP 11
  69
  70 struct MonoLMF {
  71         /*
  72          * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
  73          * the other fields are not valid.
  74          */
  75         gpointer    previous_lmf;
  76         gpointer    lmf_addr;
  77         mgreg_t    pc;
  78         mgreg_t    gregs [MONO_ARCH_NUM_LMF_REGS];
  79 };
  80
  81 /* Structure used by the sequence points in AOTed code */
  82 typedef struct {
  83         gpointer ss_trigger_page;
  84         gpointer bp_trigger_page;
  85         gpointer ss_tramp_addr;
  86         guint8* bp_addrs [MONO_ZERO_LEN_ARRAY];
  87 } SeqPointInfo;
  88
  89 #define PARAM_REGS 8
  90 #define FP_PARAM_REGS 8
  91
  92 #define DYN_CALL_STACK_ARGS 6
  93
  94 typedef struct {
  95         /* The +1 is for r8 */
  96         mgreg_t regs [PARAM_REGS + 1 + DYN_CALL_STACK_ARGS];
  97         mgreg_t res, res2;
  98         guint8 *ret;
  99         double fpregs [FP_PARAM_REGS];
 100         int n_fpargs, n_fpret;
 101         guint8 buffer [256];
 102 } DynCallArgs;
 103
 104 typedef struct {
 105         gpointer cinfo;
 106         int saved_gregs_offset;
 107         /* Points to arguments received on the stack */
 108         int args_reg;
 109         gboolean cond_branch_islands;
 110         gpointer vret_addr_loc;
 111         gpointer seq_point_info_var;
 112         gpointer ss_tramp_var;
 113         gpointer bp_tramp_var;
 114         guint8 *thunks;
 115         int thunks_size;
 116 } MonoCompileArch;
 117
 118 #define MONO_ARCH_EMULATE_FREM 1
 119 #define MONO_ARCH_NO_EMULATE_LONG_MUL_OPTS 1
 120 #define MONO_ARCH_EMULATE_LONG_MUL_OVF_OPTS 1
 121 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS 1
 122 #define MONO_ARCH_NEED_DIV_CHECK 1
 123 #define MONO_ARCH_EMULATE_MUL_OVF 1
 124 #define MONO_ARCH_HAVE_IMT 1
 125 #define MONO_ARCH_HAVE_OP_TAIL_CALL 1
 126 #define MONO_ARCH_THIS_AS_FIRST_ARG 1
 127 #define MONO_ARCH_RGCTX_REG ARMREG_R15
 128 #define MONO_ARCH_IMT_REG MONO_ARCH_RGCTX_REG
 129 #define MONO_ARCH_VTABLE_REG ARMREG_R0
 130 #define MONO_ARCH_EXC_REG ARMREG_R0
 131 #define MONO_ARCH_HAVE_XP_UNWIND 1
 132 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE 1
 133 #define MONO_ARCH_HAVE_GENERALIZED_IMT_TRAMPOLINE 1
 134 #define MONO_ARCH_USE_SIGACTION 1
 135 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
 136 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG 1
 137 #define MONO_ARCH_GSHARED_SUPPORTED 1
 138 #define MONO_ARCH_AOT_SUPPORTED 1
 139 #define MONO_ARCH_LLVM_SUPPORTED 1
 140 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
 141 #define MONO_ARCH_HAVE_EXCEPTIONS_INIT 1
 142 #define MONO_ARCH_HAVE_GET_TRAMPOLINES 1
 143 #define MONO_ARCH_DYN_CALL_SUPPORTED 1
 144 #define MONO_ARCH_DYN_CALL_PARAM_AREA (DYN_CALL_STACK_ARGS * 8)
 145 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
 146 #define MONO_ARCH_GSHAREDVT_SUPPORTED 1
 147 #define MONO_ARCH_HAVE_SETUP_RESUME_FROM_SIGNAL_HANDLER_CTX 1
 148 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
 149 #define MONO_ARCH_HAVE_GENERAL_RGCTX_LAZY_FETCH_TRAMPOLINE 1
 150 #ifndef MONO_CROSS_COMPILE
 151 #define MONO_ARCH_ENABLE_MONO_LMF_VAR 1
 152 #endif
 153 #define MONO_ARCH_HAVE_OP_GET_EX_OBJ 1
 154 #define MONO_ARCH_HAVE_OBJC_GET_SELECTOR 1
 155 #define MONO_ARCH_HAVE_SDB_TRAMPOLINES 1
 156 #define MONO_ARCH_HAVE_PATCH_CODE_NEW 1
 157 #define MONO_ARCH_HAVE_OP_GENERIC_CLASS_INIT 1
 158 #define MONO_ARCH_HAVE_OPCODE_NEEDS_EMULATION 1
 159 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 160 #define MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD 1
 161
 162 #ifdef TARGET_IOS
 163
 164 #define MONO_ARCH_REDZONE_SIZE 128
 165
 166 #else
 167
 168 #define MONO_ARCH_REDZONE_SIZE 0
 169
 170 #endif
 171
 172 #if defined(TARGET_APPLETVOS) || defined(TARGET_IOS)
 173 #define MONO_ARCH_HAVE_UNWIND_BACKTRACE 1
 174 #endif
 175
 176 /* Relocations */
 177 #define MONO_R_ARM64_B 1
 178 #define MONO_R_ARM64_BCC 2
 179 #define MONO_R_ARM64_IMM 3
 180 #define MONO_R_ARM64_BL 4
 181 #define MONO_R_ARM64_BL_SHORT 5
 182 #define MONO_R_ARM64_CBZ 6
 183
 184
 185 typedef enum {
 186         ArgInIReg,
 187         ArgInFReg,
 188         ArgInFRegR4,
 189         ArgOnStack,
 190         ArgOnStackR8,
 191         ArgOnStackR4,
 192         /*
 193          * Vtype passed in consecutive int registers.
 194          * ainfo->reg is the firs register,
 195          * ainfo->nregs is the number of registers,
 196          * ainfo->size is the size of the structure.
 197          */
 198         ArgVtypeInIRegs,
 199         ArgVtypeByRef,
 200         ArgVtypeByRefOnStack,
 201         ArgVtypeOnStack,
 202         ArgHFA,
 203         ArgNone
 204 } ArgStorage;
 205
 206 typedef struct {
 207         ArgStorage storage;
 208         int reg;
 209         /* ArgOnStack */
 210         int offset;
 211         /* ArgVtypeInIRegs/ArgHFA */
 212         int nregs, size;
 213         /* ArgHFA */
 214         int esize;
 215         /* ArgHFA */
 216         /* The offsets of the float values inside the arg */
 217         guint16 foffsets [4];
 218         /* ArgOnStack */
 219         int slot_size;
 220         /* hfa */
 221         int nfregs_to_skip;
 222         gboolean sign;
 223         gboolean gsharedvt;
 224         gboolean hfa;
 225 } ArgInfo;
 226
 227 typedef struct {
 228         int nargs;
 229         int gr, fr, stack_usage;
 230         gboolean pinvoke;
 231         ArgInfo ret;
 232         ArgInfo sig_cookie;
 233         ArgInfo args [1];
 234 } CallInfo;
 235
 236
 237 guint8* mono_arm_emit_imm64 (guint8 *code, int dreg, gint64 imm);
 238
 239 guint8* mono_arm_emit_ldrx (guint8 *code, int rt, int rn, int imm);
 240
 241 guint8* mono_arm_emit_destroy_frame (guint8 *code, int stack_offset, guint64 temp_regs);
 242
 243 guint8* mono_arm_emit_store_regset (guint8 *code, guint64 regs, int basereg, int offset);
 244
 245 guint8* mono_arm_emit_store_regarray (guint8 *code, guint64 regs, int basereg, int offset);
 246
 247 guint8* mono_arm_emit_load_regarray (guint8 *code, guint64 regs, int basereg, int offset);
 248
 249 /* MonoJumpInfo **ji */
 250 guint8* mono_arm_emit_aotconst (gpointer ji, guint8 *code, guint8 *code_start, int dreg, guint32 patch_type, gconstpointer data);
 251
 252 void mono_arm_patch (guint8 *code, guint8 *target, int relocation);
 253
 254 void mono_arm_throw_exception (gpointer arg, mgreg_t pc, mgreg_t *int_regs, gdouble *fp_regs, gboolean corlib, gboolean rethrow);
 255
 256 void mono_arm_gsharedvt_init (void);
 257
 258 GSList* mono_arm_get_exception_trampolines (gboolean aot);
 259
 260 void mono_arm_resume_unwind (gpointer arg, mgreg_t pc, mgreg_t *int_regs, gdouble *fp_regs, gboolean corlib, gboolean rethrow);
 261
 262 CallInfo* mono_arch_get_call_info (MonoMemPool *mp, MonoMethodSignature *sig);
 263
 264 #endif /* __MONO_MINI_ARM64_H__ */