mono/mini/mini-ppc.h

   1 /**
   2  * \file
   3  */
   4
   5 #ifndef __MONO_MINI_PPC_H__
   6 #define __MONO_MINI_PPC_H__
   7
   8 #include <mono/arch/ppc/ppc-codegen.h>
   9 #include <mono/utils/mono-sigcontext.h>
  10 #include <mono/utils/mono-context.h>
  11 #include <mono/metadata/object.h>
  12 #include <glib.h>
  13
  14 #ifdef __mono_ppc64__
  15 #define MONO_ARCH_CPU_SPEC mono_ppc64_cpu_desc
  16 #else
  17 #define MONO_ARCH_CPU_SPEC mono_ppcg4
  18 #endif
  19
  20 #define MONO_MAX_IREGS 32
  21 #define MONO_MAX_FREGS 32
  22
  23 #define MONO_SAVED_GREGS 19
  24 #define MONO_SAVED_FREGS 18
  25
  26 #define MONO_PPC_FIRST_SAVED_GREG ppc_r13
  27 #define MONO_PPC_FIRST_SAVED_FREG ppc_f14
  28
  29 #define MONO_ARCH_FRAME_ALIGNMENT 16
  30
  31 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
  32  * reproduceable results for benchmarks */
  33 #define MONO_ARCH_CODE_ALIGNMENT 32
  34
  35 #ifdef __mono_ppc64__
  36 #define THUNK_SIZE ((2 + 5) * 4)
  37 #else
  38 #define THUNK_SIZE ((2 + 2) * 4)
  39 #endif
  40
  41 void ppc_patch (guchar *code, const guchar *target);
  42
  43 struct MonoLMF {
  44         /*
  45          * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
  46          * the other fields are not valid.
  47          */
  48         gpointer    previous_lmf;
  49         gpointer    lmf_addr;
  50         MonoMethod *method;
  51         gulong     ebp;
  52         gulong     eip;
  53         /* Add a dummy field to force iregs to be aligned when cross compiling from x86 */
  54         gulong     dummy;
  55         host_mgreg_t iregs [MONO_SAVED_GREGS]; /* 13..31 */
  56         gdouble    fregs [MONO_SAVED_FREGS]; /* 14..31 */
  57 };
  58
  59
  60 typedef struct MonoCompileArch {
  61         int fp_conv_var_offset;
  62         guint8 *thunks;
  63         int thunks_size;
  64 } MonoCompileArch;
  65
  66 /*
  67  * ILP32 uses a version of the ppc64 abi with sizeof(void*)==sizeof(long)==4.
  68  * To support this, code needs to follow the following conventions:
  69  * - for the size of a pointer use sizeof (gpointer)
  70  * - for the size of a register/stack slot use SIZEOF_REGISTER.
  71  * - for variables which contain values of registers, use host_mgreg_t or target_mgreg_t.
  72  * - for loading/saving pointers/ints, use the normal ppc_load_reg/ppc_save_reg ()
  73  *   macros.
  74  * - for loading/saving register sized quantities, use the ppc_ldr/ppc_str
  75  *   macros.
  76  * - make sure to not mix the two kinds of macros for the same memory location,
  77  *   since ppc is big endian, so a 8 byte store followed by a 4 byte load will
  78  *   load the upper 32 bit of the value.
  79  * - use OP_LOADR_MEMBASE/OP_STORER_MEMBASE to load/store register sized
  80  *   quantities.
  81  */
  82
  83 #ifdef __mono_ppc64__
  84 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS
  85 #define MONO_ARCH_NO_EMULATE_LONG_MUL_OPTS
  86
  87 /* ELFv2 ABI doesn't use function descriptors.  */
  88 #if _CALL_ELF == 2
  89 #undef PPC_USES_FUNCTION_DESCRIPTOR
  90 #else
  91 #define PPC_USES_FUNCTION_DESCRIPTOR
  92 #endif
  93
  94 #else /* must be __mono_ppc__ */
  95
  96 #if defined(_AIX)
  97 /* 32 and 64 bit AIX use function descriptors */
  98 #define PPC_USES_FUNCTION_DESCRIPTOR
  99 #endif
 100
 101 #define MONO_ARCH_EMULATE_FCONV_TO_I8 1
 102 #define MONO_ARCH_EMULATE_LCONV_TO_R8 1
 103 #define MONO_ARCH_EMULATE_LCONV_TO_R4 1
 104 #endif
 105
 106 #define MONO_ARCH_EMULATE_FCONV_TO_U4 1
 107 #define MONO_ARCH_EMULATE_FCONV_TO_U8 1
 108 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN 1
 109 #define MONO_ARCH_EMULATE_FREM 1
 110 #define MONO_ARCH_GC_MAPS_SUPPORTED 1
 111
 112 /* Parameters used by the register allocator */
 113 #define MONO_ARCH_CALLEE_REGS ((0xff << ppc_r3) | (1 << ppc_r12) | (1 << ppc_r11))
 114 #define MONO_ARCH_CALLEE_SAVED_REGS (0xfffff << ppc_r13) /* ppc_13 - ppc_31 */
 115
 116 #if defined(__APPLE__) || defined(__mono_ppc64__)
 117 #define MONO_ARCH_CALLEE_FREGS (0x1fff << ppc_f1)
 118 #else
 119 #define MONO_ARCH_CALLEE_FREGS (0xff << ppc_f1)
 120 #endif
 121 #define MONO_ARCH_CALLEE_SAVED_FREGS (~(MONO_ARCH_CALLEE_FREGS | 1))
 122
 123 #define MONO_ARCH_USE_FPSTACK FALSE
 124
 125 #ifdef __mono_ppc64__
 126 #define MONO_ARCH_INST_FIXED_REG(desc) (((desc) == 'a')? ppc_r3:\
 127                                         ((desc) == 'g'? ppc_f1:-1))
 128 #define MONO_ARCH_INST_IS_REGPAIR(desc) FALSE
 129 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (-1)
 130 #else
 131 #define MONO_ARCH_INST_FIXED_REG(desc) (((desc) == 'a')? ppc_r3:\
 132                                         ((desc) == 'l')? ppc_r4:\
 133                                         ((desc) == 'g'? ppc_f1:-1))
 134 #define MONO_ARCH_INST_IS_REGPAIR(desc) (desc == 'l')
 135 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (desc == 'l' ? ppc_r3 : -1)
 136 #endif
 137
 138 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 139
 140 #define MONO_ARCH_INST_IS_FLOAT(desc) ((desc == 'f') || (desc == 'g'))
 141
 142 /* deal with some of the ABI differences here */
 143 #ifdef __APPLE__
 144 #define PPC_RET_ADDR_OFFSET 8
 145 #define PPC_STACK_PARAM_OFFSET 24
 146 #define PPC_MINIMAL_STACK_SIZE 24
 147 #define PPC_MINIMAL_PARAM_AREA_SIZE 0
 148 #define PPC_LARGEST_STRUCT_SIZE_TO_RETURN_VIA_REGISTERS 0
 149 #define PPC_MOST_FLOAT_STRUCT_MEMBERS_TO_RETURN_VIA_REGISTERS 0
 150 #define PPC_FIRST_ARG_REG ppc_r3
 151 #define PPC_LAST_ARG_REG ppc_r10
 152 #define PPC_FIRST_FPARG_REG ppc_f1
 153 #define PPC_LAST_FPARG_REG ppc_f13
 154 #define PPC_PASS_STRUCTS_BY_VALUE 1
 155 #define PPC_PASS_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 156 #define PPC_RETURN_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 157 #define PPC_RETURN_SMALL_STRUCTS_IN_REGS 0
 158 #elif defined(_AIX)
 159 /* FIXME: are these values valid? on 32-bit? */
 160 #define PPC_RET_ADDR_OFFSET 16
 161 #if defined(__mono_ppc64__)
 162 #define PPC_STACK_PARAM_OFFSET 112
 163 #define PPC_MINIMAL_STACK_SIZE 112
 164 #else
 165 #define PPC_STACK_PARAM_OFFSET 56
 166 #define PPC_MINIMAL_STACK_SIZE 56
 167 #endif
 168 #define PPC_LARGEST_STRUCT_SIZE_TO_RETURN_VIA_REGISTERS 0
 169 #define PPC_MOST_FLOAT_STRUCT_MEMBERS_TO_RETURN_VIA_REGISTERS 0
 170 #define PPC_PASS_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 171 #define PPC_RETURN_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 172 #define PPC_RETURN_SMALL_STRUCTS_IN_REGS 0
 173 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
 174 #define PPC_MINIMAL_PARAM_AREA_SIZE 64
 175 #define PPC_LAST_FPARG_REG ppc_f13
 176 #define PPC_PASS_STRUCTS_BY_VALUE 1
 177 #define PPC_THREAD_PTR_REG ppc_r13
 178 #define PPC_FIRST_ARG_REG ppc_r3
 179 #define PPC_LAST_ARG_REG ppc_r10
 180 #define PPC_FIRST_FPARG_REG ppc_f1
 181 #else
 182 /* Linux */
 183 #ifdef __mono_ppc64__
 184 #define PPC_RET_ADDR_OFFSET 16
 185  // Power LE abvi2
 186  #if (_CALL_ELF == 2)
 187   #define PPC_STACK_PARAM_OFFSET 32
 188   #define PPC_MINIMAL_STACK_SIZE 32
 189   #define PPC_LARGEST_STRUCT_SIZE_TO_RETURN_VIA_REGISTERS 16
 190   #define PPC_MOST_FLOAT_STRUCT_MEMBERS_TO_RETURN_VIA_REGISTERS 8
 191   #define PPC_PASS_SMALL_FLOAT_STRUCTS_IN_FR_REGS 1
 192   #define PPC_RETURN_SMALL_FLOAT_STRUCTS_IN_FR_REGS 1
 193   #define PPC_RETURN_SMALL_STRUCTS_IN_REGS 1
 194
 195 // Define "DEBUG_ELFABIV2" to allow for debugging output for ELF ABI v2 function call and return codegen
 196 //  #define DEBUG_ELFABIV2
 197
 198   #define MONO_ARCH_LLVM_SUPPORTED 1
 199
 200  #else
 201   #define PPC_STACK_PARAM_OFFSET 48
 202   #define PPC_MINIMAL_STACK_SIZE 48
 203   #define PPC_LARGEST_STRUCT_SIZE_TO_RETURN_VIA_REGISTERS 0
 204   #define PPC_MOST_FLOAT_STRUCT_MEMBERS_TO_RETURN_VIA_REGISTERS 0
 205   #define PPC_PASS_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 206   #define PPC_RETURN_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 207   #define PPC_RETURN_SMALL_STRUCTS_IN_REGS 0
 208  #endif
 209 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
 210 #define PPC_MINIMAL_PARAM_AREA_SIZE 64
 211 #define PPC_LAST_FPARG_REG ppc_f13
 212 #define PPC_PASS_STRUCTS_BY_VALUE 1
 213 #define PPC_THREAD_PTR_REG ppc_r13
 214 #else
 215 #define PPC_RET_ADDR_OFFSET 4
 216 #define PPC_STACK_PARAM_OFFSET 8
 217 #define PPC_MINIMAL_STACK_SIZE 8
 218 #define PPC_MINIMAL_PARAM_AREA_SIZE 0
 219 #define PPC_LAST_FPARG_REG ppc_f8
 220 #define PPC_PASS_STRUCTS_BY_VALUE 0
 221 #define PPC_LARGEST_STRUCT_SIZE_TO_RETURN_VIA_REGISTERS 0
 222 #define PPC_MOST_FLOAT_STRUCT_MEMBERS_TO_RETURN_VIA_REGISTERS 0
 223 #define PPC_PASS_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 224 #define PPC_RETURN_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 225 #define PPC_RETURN_SMALL_STRUCTS_IN_REGS 0
 226 #define PPC_THREAD_PTR_REG ppc_r2
 227 #endif
 228 #define PPC_FIRST_ARG_REG ppc_r3
 229 #define PPC_LAST_ARG_REG ppc_r10
 230 #define PPC_FIRST_FPARG_REG ppc_f1
 231 #endif
 232
 233 #define PPC_CALL_REG ppc_r12
 234
 235 #if defined(HAVE_WORKING_SIGALTSTACK) && !defined(__APPLE__)
 236 #define MONO_ARCH_SIGSEGV_ON_ALTSTACK 1
 237 #define MONO_ARCH_SIGNAL_STACK_SIZE (12 * 1024)
 238 #endif /* HAVE_WORKING_SIGALTSTACK */
 239
 240 #define MONO_ARCH_IMT_REG ppc_r11
 241
 242 #define MONO_ARCH_VTABLE_REG    ppc_r11
 243 #define MONO_ARCH_RGCTX_REG     MONO_ARCH_IMT_REG
 244
 245 #define MONO_ARCH_HAVE_SETUP_RESUME_FROM_SIGNAL_HANDLER_CTX 1
 246
 247 #define MONO_ARCH_NO_IOV_CHECK 1
 248 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
 249 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 250
 251 #define MONO_ARCH_HAVE_GENERALIZED_IMT_TRAMPOLINE 1
 252
 253 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
 254
 255 #define MONO_ARCH_GSHARED_SUPPORTED 1
 256
 257 #define MONO_ARCH_NEED_DIV_CHECK 1
 258 #define MONO_ARCH_AOT_SUPPORTED 1
 259 #define MONO_ARCH_NEED_GOT_VAR 1
 260 #if !defined(MONO_CROSS_COMPILE) && !defined(TARGET_PS3)
 261 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
 262 #endif
 263 #define MONO_ARCH_HAVE_PATCH_CODE_NEW 1
 264
 265 // Does the ABI have a volatile non-parameter register, so tailcall
 266 // can pass context to generics or interfaces?
 267 #define MONO_ARCH_HAVE_VOLATILE_NON_PARAM_REGISTER 0 // FIXME?
 268
 269 #if defined(_AIX)
 270 /*
 271  * HACK: AIX always allows accessing page 0! We can't rely on SIGSEGV
 272  * to save us when a null dereference in managed code occurs, so we
 273  * always have to check for null.
 274  */
 275 #define MONO_ARCH_EXPLICIT_NULL_CHECKS 1
 276 #endif
 277
 278 #define PPC_NUM_REG_ARGS (PPC_LAST_ARG_REG-PPC_FIRST_ARG_REG+1)
 279 #define PPC_NUM_REG_FPARGS (PPC_LAST_FPARG_REG-PPC_FIRST_FPARG_REG+1)
 280
 281 #ifdef MONO_CROSS_COMPILE
 282
 283 typedef struct {
 284         unsigned long sp;
 285         unsigned long unused1;
 286         unsigned long lr;
 287 } MonoPPCStackFrame;
 288
 289 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) g_assert_not_reached ()
 290
 291 #elif defined (__APPLE__)
 292
 293 typedef struct {
 294         unsigned long sp;
 295         unsigned long unused1;
 296         unsigned long lr;
 297 } MonoPPCStackFrame;
 298
 299 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 300                 gpointer r1;                                    \
 301                 __asm__ volatile("mr   %0,r1" : "=r" (r1));     \
 302                 MONO_CONTEXT_SET_BP ((ctx), r1);                \
 303                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 304         } while (0)
 305
 306 #else
 307
 308 typedef struct {
 309         host_mgreg_t sp;
 310 #ifdef __mono_ppc64__
 311         host_mgreg_t cr;
 312 #endif
 313         host_mgreg_t lr;
 314 } MonoPPCStackFrame;
 315
 316 #ifdef G_COMPILER_CODEWARRIOR
 317 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 318                 register gpointer r1_var;                                       \
 319                 asm { mr r1_var, r1 };  \
 320                 MONO_CONTEXT_SET_BP ((ctx), r1);                \
 321                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 322         } while (0)
 323
 324 #else
 325 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 326                 gpointer r1;                                    \
 327                 __asm__ volatile("mr   %0,1" : "=r" (r1));      \
 328                 MONO_CONTEXT_SET_BP ((ctx), r1);                \
 329                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 330         } while (0)
 331
 332 #endif
 333 #endif
 334
 335 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
 336
 337 typedef struct {
 338         gint8 reg;
 339         gint8 size;
 340         int vtsize;
 341         int offset;
 342 } MonoPPCArgInfo;
 343
 344 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
 345 typedef struct {
 346         gpointer code;
 347         gpointer toc;
 348         gpointer env;
 349 } MonoPPCFunctionDescriptor;
 350
 351 #define PPC_FTNPTR_SIZE                 sizeof (MonoPPCFunctionDescriptor)
 352 extern guint8* mono_ppc_create_pre_code_ftnptr (guint8 *code);
 353 #else
 354 #define PPC_FTNPTR_SIZE                 0
 355 #define mono_ppc_create_pre_code_ftnptr(c)      c
 356 #endif
 357
 358 #if defined(__linux__)
 359 #define MONO_ARCH_USE_SIGACTION 1
 360 #elif defined (__APPLE__)
 361 #define MONO_ARCH_USE_SIGACTION 1
 362 #elif defined(__NetBSD__)
 363 #define MONO_ARCH_USE_SIGACTION 1
 364 #elif defined(__FreeBSD__)
 365 #define MONO_ARCH_USE_SIGACTION 1
 366 #elif defined (_AIX)
 367 #define MONO_ARCH_USE_SIGACTION 1
 368 #elif defined(MONO_CROSS_COMPILE)
 369         typedef MonoContext ucontext_t;
 370 /*      typedef struct {
 371                 int dummy;
 372         } ucontext_t;*/
 373         #define UCONTEXT_REG_Rn(ctx, n)
 374         #define UCONTEXT_REG_FPRn(ctx, n)
 375         #define UCONTEXT_REG_NIP(ctx)
 376         #define UCONTEXT_REG_LNK(ctx)
 377 #else
 378 #error No OS definition for MONO_ARCH_USE_SIGACTION.
 379 #endif
 380
 381 gboolean
 382 mono_ppc_tailcall_supported (MonoMethodSignature *caller_sig, MonoMethodSignature *callee_sig);
 383
 384 void
 385 mono_ppc_patch (guchar *code, const guchar *target);
 386
 387 void
 388 mono_ppc_throw_exception (MonoObject *exc, unsigned long eip, unsigned long esp, host_mgreg_t *int_regs, gdouble *fp_regs, gboolean rethrow, gboolean preserve_ips);
 389
 390 #ifdef __mono_ppc64__
 391 #define MONO_PPC_32_64_CASE(c32,c64)    c64
 392 extern void mono_ppc_emitted (guint8 *code, gint64 length, const char *format, ...);
 393 #else
 394 #define MONO_PPC_32_64_CASE(c32,c64)    c32
 395 #endif
 396
 397 gboolean mono_ppc_is_direct_call_sequence (guint32 *code);
 398
 399 // Debugging macros for ELF ABI v2
 400 #ifdef DEBUG_ELFABIV2
 401
 402 #define DEBUG_ELFABIV2_printf(a, ...) \
 403 {char *debug_env; if (debug_env = getenv("DEBUG_ELFABIV2")) { printf(a, ##__VA_ARGS__); fflush(stdout); g_free (debug_env); } }
 404
 405 #define DEBUG_ELFABIV2_mono_print_ins(a) \
 406 {char *debug_env; if (debug_env = getenv("DEBUG_ELFABIV2")) { if (!a) {printf("null\n");} else {mono_print_ins(a);} fflush(stdout); g_free (debug_env); } }
 407
 408 extern char* mono_type_full_name (MonoType *type);
 409
 410 #define DEBUG_ELFABIV2_mono_print_type(a) \
 411 {char *debug_env; if (debug_env = getenv("DEBUG_ELFABIV2")) { printf("%s, size: %d\n", mono_type_get_name(a), mini_type_stack_size (a, 0)); fflush(stdout); g_free (debug_env); } }
 412
 413 #define DEBUG_ELFABIV2_mono_print_class(a) \
 414         {char *debug_env; if (debug_env = getenv("DEBUG_ELFABIV2")) { printf("%s\n", mono_type_get_name(m_class_get_byval_arg (a))); fflush(stdout); g_free (debug_env); } }
 415
 416 #else
 417
 418 #define DEBUG_ELFABIV2_printf(a, ...)
 419 #define DEBUG_ELFABIV2_mono_print_ins(a)
 420 #define DEBUG_ELFABIV2_mono_print_type(a)
 421 #define DEBUG_ELFABIV2_mono_print_class(a)
 422
 423 #endif
 424
 425 #endif /* __MONO_MINI_PPC_H__ */