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         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 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_LCONV_TO_R8_UN 1
 107 #define MONO_ARCH_EMULATE_FREM 1
 108 #define MONO_ARCH_GC_MAPS_SUPPORTED 1
 109
 110 /* Parameters used by the register allocator */
 111 #define MONO_ARCH_CALLEE_REGS ((0xff << ppc_r3) | (1 << ppc_r12) | (1 << ppc_r11))
 112 #define MONO_ARCH_CALLEE_SAVED_REGS (0xfffff << ppc_r13) /* ppc_13 - ppc_31 */
 113
 114 #if defined(__APPLE__) || defined(__mono_ppc64__)
 115 #define MONO_ARCH_CALLEE_FREGS (0x1fff << ppc_f1)
 116 #else
 117 #define MONO_ARCH_CALLEE_FREGS (0xff << ppc_f1)
 118 #endif
 119 #define MONO_ARCH_CALLEE_SAVED_FREGS (~(MONO_ARCH_CALLEE_FREGS | 1))
 120
 121 #define MONO_ARCH_USE_FPSTACK FALSE
 122
 123 #ifdef __mono_ppc64__
 124 #define MONO_ARCH_INST_FIXED_REG(desc) (((desc) == 'a')? ppc_r3:\
 125                                         ((desc) == 'g'? ppc_f1:-1))
 126 #define MONO_ARCH_INST_IS_REGPAIR(desc) FALSE
 127 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (-1)
 128 #else
 129 #define MONO_ARCH_INST_FIXED_REG(desc) (((desc) == 'a')? ppc_r3:\
 130                                         ((desc) == 'l')? ppc_r4:\
 131                                         ((desc) == 'g'? ppc_f1:-1))
 132 #define MONO_ARCH_INST_IS_REGPAIR(desc) (desc == 'l')
 133 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (desc == 'l' ? ppc_r3 : -1)
 134 #endif
 135
 136 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
 137
 138 #define MONO_ARCH_INST_IS_FLOAT(desc) ((desc == 'f') || (desc == 'g'))
 139
 140 /* deal with some of the ABI differences here */
 141 #ifdef __APPLE__
 142 #define PPC_RET_ADDR_OFFSET 8
 143 #define PPC_STACK_PARAM_OFFSET 24
 144 #define PPC_MINIMAL_STACK_SIZE 24
 145 #define PPC_MINIMAL_PARAM_AREA_SIZE 0
 146 #define PPC_LARGEST_STRUCT_SIZE_TO_RETURN_VIA_REGISTERS 0
 147 #define PPC_MOST_FLOAT_STRUCT_MEMBERS_TO_RETURN_VIA_REGISTERS 0
 148 #define PPC_FIRST_ARG_REG ppc_r3
 149 #define PPC_LAST_ARG_REG ppc_r10
 150 #define PPC_FIRST_FPARG_REG ppc_f1
 151 #define PPC_LAST_FPARG_REG ppc_f13
 152 #define PPC_PASS_STRUCTS_BY_VALUE 1
 153 #define PPC_PASS_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 154 #define PPC_RETURN_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 155 #define PPC_RETURN_SMALL_STRUCTS_IN_REGS 0
 156 #elif defined(_AIX)
 157 /* FIXME: are these values valid? on 32-bit? */
 158 #define PPC_RET_ADDR_OFFSET 16
 159 #if defined(__mono_ppc64__)
 160 #define PPC_STACK_PARAM_OFFSET 112
 161 #define PPC_MINIMAL_STACK_SIZE 112
 162 #else
 163 #define PPC_STACK_PARAM_OFFSET 56
 164 #define PPC_MINIMAL_STACK_SIZE 56
 165 #endif
 166 #define PPC_LARGEST_STRUCT_SIZE_TO_RETURN_VIA_REGISTERS 0
 167 #define PPC_MOST_FLOAT_STRUCT_MEMBERS_TO_RETURN_VIA_REGISTERS 0
 168 #define PPC_PASS_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 169 #define PPC_RETURN_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 170 #define PPC_RETURN_SMALL_STRUCTS_IN_REGS 0
 171 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
 172 #define PPC_MINIMAL_PARAM_AREA_SIZE 64
 173 #define PPC_LAST_FPARG_REG ppc_f13
 174 #define PPC_PASS_STRUCTS_BY_VALUE 1
 175 #define PPC_THREAD_PTR_REG ppc_r13
 176 #define PPC_FIRST_ARG_REG ppc_r3
 177 #define PPC_LAST_ARG_REG ppc_r10
 178 #define PPC_FIRST_FPARG_REG ppc_f1
 179 #else
 180 /* Linux */
 181 #ifdef __mono_ppc64__
 182 #define PPC_RET_ADDR_OFFSET 16
 183  // Power LE abvi2
 184  #if (_CALL_ELF == 2)
 185   #define PPC_STACK_PARAM_OFFSET 32
 186   #define PPC_MINIMAL_STACK_SIZE 32
 187   #define PPC_LARGEST_STRUCT_SIZE_TO_RETURN_VIA_REGISTERS 16
 188   #define PPC_MOST_FLOAT_STRUCT_MEMBERS_TO_RETURN_VIA_REGISTERS 8
 189   #define PPC_PASS_SMALL_FLOAT_STRUCTS_IN_FR_REGS 1
 190   #define PPC_RETURN_SMALL_FLOAT_STRUCTS_IN_FR_REGS 1
 191   #define PPC_RETURN_SMALL_STRUCTS_IN_REGS 1
 192
 193 // Define "DEBUG_ELFABIV2" to allow for debugging output for ELF ABI v2 function call and return codegen
 194 //  #define DEBUG_ELFABIV2
 195
 196   #define MONO_ARCH_LLVM_SUPPORTED 1
 197
 198  #else
 199   #define PPC_STACK_PARAM_OFFSET 48
 200   #define PPC_MINIMAL_STACK_SIZE 48
 201   #define PPC_LARGEST_STRUCT_SIZE_TO_RETURN_VIA_REGISTERS 0
 202   #define PPC_MOST_FLOAT_STRUCT_MEMBERS_TO_RETURN_VIA_REGISTERS 0
 203   #define PPC_PASS_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 204   #define PPC_RETURN_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 205   #define PPC_RETURN_SMALL_STRUCTS_IN_REGS 0
 206  #endif
 207 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
 208 #define PPC_MINIMAL_PARAM_AREA_SIZE 64
 209 #define PPC_LAST_FPARG_REG ppc_f13
 210 #define PPC_PASS_STRUCTS_BY_VALUE 1
 211 #define PPC_THREAD_PTR_REG ppc_r13
 212 #else
 213 #define PPC_RET_ADDR_OFFSET 4
 214 #define PPC_STACK_PARAM_OFFSET 8
 215 #define PPC_MINIMAL_STACK_SIZE 8
 216 #define PPC_MINIMAL_PARAM_AREA_SIZE 0
 217 #define PPC_LAST_FPARG_REG ppc_f8
 218 #define PPC_PASS_STRUCTS_BY_VALUE 0
 219 #define PPC_LARGEST_STRUCT_SIZE_TO_RETURN_VIA_REGISTERS 0
 220 #define PPC_MOST_FLOAT_STRUCT_MEMBERS_TO_RETURN_VIA_REGISTERS 0
 221 #define PPC_PASS_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 222 #define PPC_RETURN_SMALL_FLOAT_STRUCTS_IN_FR_REGS 0
 223 #define PPC_RETURN_SMALL_STRUCTS_IN_REGS 0
 224 #define PPC_THREAD_PTR_REG ppc_r2
 225 #endif
 226 #define PPC_FIRST_ARG_REG ppc_r3
 227 #define PPC_LAST_ARG_REG ppc_r10
 228 #define PPC_FIRST_FPARG_REG ppc_f1
 229 #endif
 230
 231 #define PPC_CALL_REG ppc_r12
 232
 233 #if defined(HAVE_WORKING_SIGALTSTACK) && !defined(__APPLE__)
 234 #define MONO_ARCH_SIGSEGV_ON_ALTSTACK 1
 235 #define MONO_ARCH_SIGNAL_STACK_SIZE (12 * 1024)
 236 #endif /* HAVE_WORKING_SIGALTSTACK */
 237
 238 #define MONO_ARCH_IMT_REG ppc_r11
 239
 240 #define MONO_ARCH_VTABLE_REG    ppc_r11
 241 #define MONO_ARCH_RGCTX_REG     MONO_ARCH_IMT_REG
 242
 243 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
 244 #define MONO_ARCH_HAVE_SETUP_RESUME_FROM_SIGNAL_HANDLER_CTX 1
 245
 246 #define MONO_ARCH_NO_IOV_CHECK 1
 247 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
 248 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 249
 250 #define MONO_ARCH_HAVE_GENERALIZED_IMT_TRAMPOLINE 1
 251
 252 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
 253
 254 #define MONO_ARCH_GSHARED_SUPPORTED 1
 255
 256 #define MONO_ARCH_NEED_DIV_CHECK 1
 257 #define MONO_ARCH_AOT_SUPPORTED 1
 258 #define MONO_ARCH_NEED_GOT_VAR 1
 259 #if !defined(MONO_CROSS_COMPILE) && !defined(TARGET_PS3)
 260 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
 261 #endif
 262 #define MONO_ARCH_HAVE_PATCH_CODE_NEW 1
 263
 264 // Does the ABI have a volatile non-parameter register, so tailcall
 265 // can pass context to generics or interfaces?
 266 #define MONO_ARCH_HAVE_VOLATILE_NON_PARAM_REGISTER 0 // FIXME?
 267
 268 #if defined(_AIX)
 269 /*
 270  * HACK: AIX always allows accessing page 0! We can't rely on SIGSEGV
 271  * to save us when a null dereference in managed code occurs, so we
 272  * always have to check for null.
 273  */
 274 #define MONO_ARCH_EXPLICIT_NULL_CHECKS 1
 275 #endif
 276
 277 #define PPC_NUM_REG_ARGS (PPC_LAST_ARG_REG-PPC_FIRST_ARG_REG+1)
 278 #define PPC_NUM_REG_FPARGS (PPC_LAST_FPARG_REG-PPC_FIRST_FPARG_REG+1)
 279
 280 #ifdef MONO_CROSS_COMPILE
 281
 282 typedef struct {
 283         unsigned long sp;
 284         unsigned long unused1;
 285         unsigned long lr;
 286 } MonoPPCStackFrame;
 287
 288 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) g_assert_not_reached ()
 289
 290 #elif defined(__APPLE__)
 291
 292 typedef struct {
 293         unsigned long sp;
 294         unsigned long unused1;
 295         unsigned long lr;
 296 } MonoPPCStackFrame;
 297
 298 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 299                 gpointer r1;                                    \
 300                 __asm__ volatile("mr   %0,r1" : "=r" (r1));     \
 301                 MONO_CONTEXT_SET_BP ((ctx), r1);                \
 302                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 303         } while (0)
 304
 305 #else
 306
 307 typedef struct {
 308         mgreg_t sp;
 309 #ifdef __mono_ppc64__
 310         mgreg_t cr;
 311 #endif
 312         mgreg_t lr;
 313 } MonoPPCStackFrame;
 314
 315 #ifdef G_COMPILER_CODEWARRIOR
 316 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 317                 register gpointer r1_var;                                       \
 318                 asm { mr r1_var, r1 };  \
 319                 MONO_CONTEXT_SET_BP ((ctx), r1);                \
 320                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 321         } while (0)
 322
 323 #else
 324 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,start_func) do {        \
 325                 gpointer r1;                                    \
 326                 __asm__ volatile("mr   %0,1" : "=r" (r1));      \
 327                 MONO_CONTEXT_SET_BP ((ctx), r1);                \
 328                 MONO_CONTEXT_SET_IP ((ctx), (start_func));      \
 329         } while (0)
 330
 331 #endif
 332 #endif
 333
 334 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
 335
 336 typedef struct {
 337         gint8 reg;
 338         gint8 size;
 339         int vtsize;
 340         int offset;
 341 } MonoPPCArgInfo;
 342
 343 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
 344 typedef struct {
 345         gpointer code;
 346         gpointer toc;
 347         gpointer env;
 348 } MonoPPCFunctionDescriptor;
 349
 350 #define PPC_FTNPTR_SIZE                 sizeof (MonoPPCFunctionDescriptor)
 351 extern guint8* mono_ppc_create_pre_code_ftnptr (guint8 *code);
 352 #else
 353 #define PPC_FTNPTR_SIZE                 0
 354 #define mono_ppc_create_pre_code_ftnptr(c)      c
 355 #endif
 356
 357 #if defined(__linux__)
 358 #define MONO_ARCH_USE_SIGACTION 1
 359 #elif defined (__APPLE__)
 360 #define MONO_ARCH_USE_SIGACTION 1
 361 #elif defined(__NetBSD__)
 362 #define MONO_ARCH_USE_SIGACTION 1
 363 #elif defined(__FreeBSD__)
 364 #define MONO_ARCH_USE_SIGACTION 1
 365 #elif defined (_AIX)
 366 #define MONO_ARCH_USE_SIGACTION 1
 367 #elif defined(MONO_CROSS_COMPILE)
 368         typedef MonoContext ucontext_t;
 369 /*      typedef struct {
 370                 int dummy;
 371         } ucontext_t;*/
 372         #define UCONTEXT_REG_Rn(ctx, n)
 373         #define UCONTEXT_REG_FPRn(ctx, n)
 374         #define UCONTEXT_REG_NIP(ctx)
 375         #define UCONTEXT_REG_LNK(ctx)
 376 #else
 377 #error No OS definition for MONO_ARCH_USE_SIGACTION.
 378 #endif
 379
 380 gboolean
 381 mono_ppc_tailcall_supported (MonoMethodSignature *caller_sig, MonoMethodSignature *callee_sig);
 382
 383 void
 384 mono_ppc_patch (guchar *code, const guchar *target);
 385
 386 void
 387 mono_ppc_throw_exception (MonoObject *exc, unsigned long eip, unsigned long esp, mgreg_t *int_regs, gdouble *fp_regs, gboolean rethrow);
 388
 389 #ifdef __mono_ppc64__
 390 #define MONO_PPC_32_64_CASE(c32,c64)    c64
 391 extern void mono_ppc_emitted (guint8 *code, gint64 length, const char *format, ...);
 392 #else
 393 #define MONO_PPC_32_64_CASE(c32,c64)    c32
 394 #endif
 395
 396 gboolean mono_ppc_is_direct_call_sequence (guint32 *code);
 397
 398 void mono_ppc_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr);
 399
 400
 401 // Debugging macros for ELF ABI v2
 402 #ifdef DEBUG_ELFABIV2
 403
 404 #define DEBUG_ELFABIV2_printf(a, ...) \
 405 {char *debug_env; if (debug_env = getenv("DEBUG_ELFABIV2")) { printf(a, ##__VA_ARGS__); fflush(stdout); g_free (debug_env); } }
 406
 407 #define DEBUG_ELFABIV2_mono_print_ins(a) \
 408 {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); } }
 409
 410 extern char* mono_type_full_name (MonoType *type);
 411
 412 #define DEBUG_ELFABIV2_mono_print_type(a) \
 413 {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); } }
 414
 415 #define DEBUG_ELFABIV2_mono_print_class(a) \
 416         {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); } }
 417
 418 #else
 419
 420 #define DEBUG_ELFABIV2_printf(a, ...)
 421 #define DEBUG_ELFABIV2_mono_print_ins(a)
 422 #define DEBUG_ELFABIV2_mono_print_type(a)
 423 #define DEBUG_ELFABIV2_mono_print_class(a)
 424
 425 #endif
 426
 427 #endif /* __MONO_MINI_PPC_H__ */