// Licensed to the .NET Foundation under one or more agreements. // The .NET Foundation licenses this file to you under the MIT license. // See the LICENSE file in the project root for more information. /*****************************************************************************/ #ifndef _TARGET_H_ #define _TARGET_H_ #if defined(FEATURE_CORECLR) && defined(_TARGET_UNIX_) #define FEATURE_VARARG 0 #else // !(defined(FEATURE_CORECLR) && defined(_TARGET_UNIX_)) #define FEATURE_VARARG 1 #endif // !(defined(FEATURE_CORECLR) && defined(_TARGET_UNIX_)) /*****************************************************************************/ // The following are human readable names for the target architectures #if defined(_TARGET_X86_) #define TARGET_READABLE_NAME "X86" #elif defined(_TARGET_AMD64_) #define TARGET_READABLE_NAME "AMD64" #elif defined(_TARGET_ARM_) #define TARGET_READABLE_NAME "ARM" #elif defined(_TARGET_ARM64_) #define TARGET_READABLE_NAME "ARM64" #else #error Unsupported or unset target architecture #endif /*****************************************************************************/ // The following are intended to capture only those #defines that cannot be replaced // with static const members of Target #if defined(_TARGET_X86_) && defined(LEGACY_BACKEND) #define REGMASK_BITS 8 // number of bits used to represent register mask #elif defined(_TARGET_XARCH_) #define REGMASK_BITS 32 #elif defined(_TARGET_ARM_) #define REGMASK_BITS 64 #elif defined(_TARGET_ARM64_) #define REGMASK_BITS 64 #else #error Unsupported or unset target architecture #endif //------------------------------------------------------------------------ // // Each register list in register.h must declare REG_STK as the last value. // In the following enum declarations, the following REG_XXX are created beyond // the "real" registers: // REG_STK - Used to indicate something evaluated onto the stack. // ACTUAL_REG_COUNT - The number of physical registers. (same as REG_STK). // REG_COUNT - The number of physical register + REG_STK. This is the count of values that may // be assigned during register allocation. // REG_NA - Used to indicate that a register is either not yet assigned or not required. // #if defined(_TARGET_ARM_) enum _regNumber_enum : unsigned { #define REGDEF(name, rnum, mask, sname) REG_##name = rnum, #define REGALIAS(alias, realname) REG_##alias = REG_##realname, #include "register.h" REG_COUNT, REG_NA = REG_COUNT, ACTUAL_REG_COUNT = REG_COUNT - 1 // everything but REG_STK (only real regs) }; enum _regMask_enum : unsigned __int64 { RBM_NONE = 0, #define REGDEF(name, rnum, mask, sname) RBM_##name = mask, #define REGALIAS(alias, realname) RBM_##alias = RBM_##realname, #include "register.h" }; #elif defined(_TARGET_ARM64_) enum _regNumber_enum : unsigned { #define REGDEF(name, rnum, mask, xname, wname) REG_##name = rnum, #define REGALIAS(alias, realname) REG_##alias = REG_##realname, #include "register.h" REG_COUNT, REG_NA = REG_COUNT, ACTUAL_REG_COUNT = REG_COUNT - 1 // everything but REG_STK (only real regs) }; enum _regMask_enum : unsigned __int64 { RBM_NONE = 0, #define REGDEF(name, rnum, mask, xname, wname) RBM_##name = mask, #define REGALIAS(alias, realname) RBM_##alias = RBM_##realname, #include "register.h" }; #elif defined(_TARGET_AMD64_) enum _regNumber_enum : unsigned { #define REGDEF(name, rnum, mask, sname) REG_##name = rnum, #define REGALIAS(alias, realname) REG_##alias = REG_##realname, #include "register.h" REG_COUNT, REG_NA = REG_COUNT, ACTUAL_REG_COUNT = REG_COUNT - 1 // everything but REG_STK (only real regs) }; enum _regMask_enum : unsigned { RBM_NONE = 0, #define REGDEF(name, rnum, mask, sname) RBM_##name = mask, #define REGALIAS(alias, realname) RBM_##alias = RBM_##realname, #include "register.h" }; #elif defined(_TARGET_X86_) #ifndef LEGACY_BACKEND enum _regNumber_enum : unsigned { #define REGDEF(name, rnum, mask, sname) REG_##name = rnum, #define REGALIAS(alias, realname) REG_##alias = REG_##realname, #include "register.h" REG_COUNT, REG_NA = REG_COUNT, ACTUAL_REG_COUNT = REG_COUNT - 1 // everything but REG_STK (only real regs) }; enum _regMask_enum : unsigned { RBM_NONE = 0, #define REGDEF(name, rnum, mask, sname) RBM_##name = mask, #define REGALIAS(alias, realname) RBM_##alias = RBM_##realname, #include "register.h" }; #else // LEGACY_BACKEND enum _regNumber_enum : unsigned { #define REGDEF(name, rnum, mask, sname) REG_##name = rnum, #define REGALIAS(alias, realname) REG_##alias = REG_##realname, #include "register.h" REG_COUNT, REG_NA = REG_COUNT, ACTUAL_REG_COUNT = REG_COUNT - 1, // everything but REG_STK (only real regs) #define REGDEF(name, rnum, mask, sname) REG_##name = rnum, #include "registerfp.h" REG_FPCOUNT, REG_FPNONE = REG_FPCOUNT, #define REGDEF(name, rnum, mask, sname) REG_##name = rnum, #include "registerxmm.h" REG_XMMCOUNT }; enum _regMask_enum : unsigned { RBM_NONE = 0, #define REGDEF(name, rnum, mask, sname) RBM_##name = mask, #define REGALIAS(alias, realname) RBM_##alias = RBM_##realname, #include "register.h" #define REGDEF(name, rnum, mask, sname) RBM_##name = mask, #include "registerfp.h" #define REGDEF(name, rnum, mask, sname) RBM_##name = mask, #include "registerxmm.h" }; #endif // LEGACY_BACKEND #else #error Unsupported target architecture #endif /* The following are used to hold 'long' (64-bit integer) operands */ /* The following yield the number of bits and the mask of a register number in a register pair. */ #ifdef _TARGET_ARM_ #define REG_PAIR_NBITS 6 #else #define REG_PAIR_NBITS 4 #endif #define REG_PAIR_NMASK ((1 << REG_PAIR_NBITS) - 1) #ifdef DEBUG // Under DEBUG, we want to make sure that code doesn't accidentally confuse a reg pair value // with a simple register number. Thus, we offset the reg pair numbers so they are distinct // from all register numbers. Note that this increases the minimum size of a regPairNoSmall // type due to the additional bits used for this offset. #define REG_PAIR_FIRST (7 << REG_PAIR_NBITS) #define REG_PAIR_NBITS_DEBUG \ (REG_PAIR_NBITS + \ 3) // extra bits needed by the debug shifting (3 instead of 0 because we shift "7", not "1", above). C_ASSERT(REG_COUNT < REG_PAIR_FIRST); // make sure the register numbers (including REG_NA, ignoring fp/xmm regs on // x86/x64) are distinct from the pair numbers #else #define REG_PAIR_FIRST 0 #endif enum _regPairNo_enum : unsigned { #define PAIRDEF(rlo, rhi) REG_PAIR_##rlo##rhi = REG_##rlo + (REG_##rhi << REG_PAIR_NBITS) + REG_PAIR_FIRST, #include "regpair.h" REG_PAIR_LAST = (REG_COUNT - 1) + ((REG_COUNT - 1) << REG_PAIR_NBITS) + REG_PAIR_FIRST, REG_PAIR_NONE = REG_PAIR_LAST + 1 }; enum regPairMask { #define PAIRDEF(rlo, rhi) RBM_PAIR_##rlo##rhi = (RBM_##rlo | RBM_##rhi), #include "regpair.h" }; /*****************************************************************************/ // TODO-Cleanup: The types defined below are mildly confusing: why are there both? // regMaskSmall is large enough to represent the entire set of registers. // If regMaskSmall is smaller than a "natural" integer type, regMaskTP is wider, based // on a belief by the original authors of the JIT that in some situations it is more // efficient to have the wider representation. This belief should be tested, and if it // is false, then we should coalesce these two types into one (the Small width, probably). // In any case, we believe that is OK to freely cast between these types; no information will // be lost. #ifdef _TARGET_ARMARCH_ typedef unsigned __int64 regMaskTP; #else typedef unsigned regMaskTP; #endif #if REGMASK_BITS == 8 typedef unsigned char regMaskSmall; #define REG_MASK_INT_FMT "%02X" #define REG_MASK_ALL_FMT "%02X" #elif REGMASK_BITS == 16 typedef unsigned short regMaskSmall; #define REG_MASK_INT_FMT "%04X" #define REG_MASK_ALL_FMT "%04X" #elif REGMASK_BITS == 32 typedef unsigned regMaskSmall; #define REG_MASK_INT_FMT "%08X" #define REG_MASK_ALL_FMT "%08X" #else typedef unsigned __int64 regMaskSmall; #define REG_MASK_INT_FMT "%04llX" #define REG_MASK_ALL_FMT "%016llX" #endif typedef _regNumber_enum regNumber; typedef _regPairNo_enum regPairNo; // LSRA currently converts freely between regNumber and regPairNo, so make sure they are the same size. C_ASSERT(sizeof(regPairNo) == sizeof(regNumber)); typedef unsigned char regNumberSmall; #ifdef DEBUG // Under DEBUG, we shift the reg pair numbers to be independent of the regNumber range, // so we need additional bits. See the definition of REG_PAIR_FIRST for details. #if ((2 * REG_PAIR_NBITS) + REG_PAIR_NBITS_DEBUG) <= 16 C_ASSERT(((2 * REG_PAIR_NBITS) + REG_PAIR_NBITS_DEBUG) > 8); // assert that nobody fits in 8 bits typedef unsigned short regPairNoSmall; // x86/x64: need 15 bits #else C_ASSERT(((2 * REG_PAIR_NBITS) + REG_PAIR_NBITS_DEBUG) <= 32); typedef unsigned regPairNoSmall; // arm: need 21 bits #endif #else // DEBUG #if (2 * REG_PAIR_NBITS) <= 8 typedef unsigned char regPairNoSmall; // x86/x64: need 8 bits #else C_ASSERT((2 * REG_PAIR_NBITS) <= 16); // assert that nobody needs more than 16 bits typedef unsigned short regPairNoSmall; // arm: need 12 bits #endif #endif // DEBUG /*****************************************************************************/ #define LEA_AVAILABLE 1 #define SCALED_ADDR_MODES 1 /*****************************************************************************/ #ifdef DEBUG #define DSP_SRC_OPER_LEFT 0 #define DSP_SRC_OPER_RIGHT 1 #define DSP_DST_OPER_LEFT 1 #define DSP_DST_OPER_RIGHT 0 #endif /*****************************************************************************/ // The pseudorandom nop insertion is not necessary for current CoreCLR scenarios // #if defined(FEATURE_CORECLR) && !defined(_TARGET_ARM_) // #define PSEUDORANDOM_NOP_INSERTION // #endif /*****************************************************************************/ // clang-format off #if defined(_TARGET_X86_) #define CPU_LOAD_STORE_ARCH 0 #ifdef LEGACY_BACKEND #define CPU_LONG_USES_REGPAIR 1 #else #define CPU_LONG_USES_REGPAIR 0 // RyuJIT x86 doesn't use the regPairNo field to record register pairs for long // type tree nodes, and instead either decomposes them (for non-atomic operations) // or stores multiple regNumber values for operations such as calls where the // register definitions are effectively "atomic". #endif // LEGACY_BACKEND #define CPU_HAS_FP_SUPPORT 1 #define ROUND_FLOAT 1 // round intermed float expression results #define CPU_HAS_BYTE_REGS 1 #define CPU_USES_BLOCK_MOVE 1 #ifndef LEGACY_BACKEND // TODO-CQ: Fine tune the following xxBlk threshold values: #define CPBLK_MOVS_LIMIT 16 // When generating code for CpBlk, this is the buffer size // threshold to stop generating rep movs and switch to the helper call. // NOTE: Using rep movs is currently disabled since we found it has bad performance // on pre-Ivy Bridge hardware. #define CPBLK_UNROLL_LIMIT 64 // Upper bound to let the code generator to loop unroll CpBlk. #define INITBLK_STOS_LIMIT 64 // When generating code for InitBlk, this is the buffer size // NOTE: Using rep stos is currently disabled since we found it has bad performance // on pre-Ivy Bridge hardware. // threshold to stop generating rep movs and switch to the helper call. #define INITBLK_UNROLL_LIMIT 128 // Upper bound to let the code generator to loop unroll InitBlk. #define CPOBJ_NONGC_SLOTS_LIMIT 4 // For CpObj code generation, this is the the threshold of the number // of contiguous non-gc slots that trigger generating rep movsq instead of // sequences of movsq instructions // The way we're currently disabling rep movs/stos is by setting a limit less than // its unrolling counterparts. When lower takes the decision on which one to make it // always asks for the unrolling limit first so you can say the JIT 'favors' unrolling. // Setting the limit to something lower than that makes lower to never consider it. #endif // !LEGACY_BACKEND #ifdef FEATURE_SIMD #define ALIGN_SIMD_TYPES 1 // whether SIMD type locals are to be aligned #endif // FEATURE_SIMD #define FEATURE_WRITE_BARRIER 1 // Generate the proper WriteBarrier calls for GC #define FEATURE_FIXED_OUT_ARGS 0 // X86 uses push instructions to pass args #define FEATURE_STRUCTPROMOTE 1 // JIT Optimization to promote fields of structs into registers #define FEATURE_MULTIREG_STRUCT_PROMOTE 0 // True when we want to promote fields of a multireg struct into registers #define FEATURE_FASTTAILCALL 0 // Tail calls made as epilog+jmp #define FEATURE_TAILCALL_OPT 0 // opportunistic Tail calls (without ".tail" prefix) made as fast tail calls. #define FEATURE_SET_FLAGS 0 // Set to true to force the JIT to mark the trees with GTF_SET_FLAGS when // the flags need to be set #ifdef LEGACY_BACKEND #define FEATURE_MULTIREG_ARGS_OR_RET 0 // Support for passing and/or returning single values in more than one register #define FEATURE_MULTIREG_ARGS 0 // Support for passing a single argument in more than one register #define FEATURE_MULTIREG_RET 0 // Support for returning a single value in more than one register #define MAX_PASS_MULTIREG_BYTES 0 // No multireg arguments #define MAX_RET_MULTIREG_BYTES 0 // No multireg return values #else #define FEATURE_MULTIREG_ARGS_OR_RET 1 // Support for passing and/or returning single values in more than one register #define FEATURE_MULTIREG_ARGS 0 // Support for passing a single argument in more than one register #define FEATURE_MULTIREG_RET 1 // Support for returning a single value in more than one register #define MAX_PASS_MULTIREG_BYTES 0 // No multireg arguments (note this seems wrong as MAX_ARG_REG_COUNT is 2) #define MAX_RET_MULTIREG_BYTES 8 // Maximum size of a struct that could be returned in more than one register #endif #define MAX_ARG_REG_COUNT 2 // Maximum registers used to pass an argument. #define MAX_RET_REG_COUNT 2 // Maximum registers used to return a value. #ifdef FEATURE_USE_ASM_GC_WRITE_BARRIERS #define NOGC_WRITE_BARRIERS 1 // We have specialized WriteBarrier JIT Helpers that DO-NOT trash the // RBM_CALLEE_TRASH registers #else #define NOGC_WRITE_BARRIERS 0 // Do not modify this -- modify the definition above. (If we're not using // ASM barriers we definitely don't have NOGC barriers). #endif #define USER_ARGS_COME_LAST 0 #define EMIT_TRACK_STACK_DEPTH 1 #define TARGET_POINTER_SIZE 4 // equal to sizeof(void*) and the managed pointer size in bytes for this // target #define FEATURE_EH 1 // To aid platform bring-up, eliminate exceptional EH clauses (catch, filter, // filter-handler, fault) and directly execute 'finally' clauses. #if defined(FEATURE_PAL) && !defined(LEGACY_BACKEND) #define FEATURE_EH_FUNCLETS 1 #else // FEATURE_PAL && !LEGACY_BACKEND #define FEATURE_EH_FUNCLETS 0 #endif // FEATURE_PAL && !LEGACY_BACKEND #define FEATURE_EH_CALLFINALLY_THUNKS 0 // Generate call-to-finally code in "thunks" in the enclosing EH region, // protected by "cloned finally" clauses. #ifndef LEGACY_BACKEND #define FEATURE_STACK_FP_X87 0 #else // LEGACY_BACKEND #define FEATURE_STACK_FP_X87 1 // Use flat register file model #endif // LEGACY_BACKEND #define FEATURE_X87_DOUBLES 0 // FP tree temps always use x87 doubles (when 1) or can be double or float // (when 0). #define ETW_EBP_FRAMED 1 // if 1 we cannot use EBP as a scratch register and must create EBP based // frames for most methods #define CSE_CONSTS 1 // Enable if we want to CSE constants #ifndef LEGACY_BACKEND // The following defines are useful for iterating a regNumber #define REG_FIRST REG_EAX #define REG_INT_FIRST REG_EAX #define REG_INT_LAST REG_EDI #define REG_INT_COUNT (REG_INT_LAST - REG_INT_FIRST + 1) #define REG_NEXT(reg) ((regNumber)((unsigned)(reg) + 1)) #define REG_PREV(reg) ((regNumber)((unsigned)(reg) - 1)) #define REG_FP_FIRST REG_XMM0 #define REG_FP_LAST REG_XMM7 #define FIRST_FP_ARGREG REG_XMM0 #define LAST_FP_ARGREG REG_XMM3 #define REG_FLTARG_0 REG_XMM0 #define REG_FLTARG_1 REG_XMM1 #define REG_FLTARG_2 REG_XMM2 #define REG_FLTARG_3 REG_XMM3 #define RBM_FLTARG_0 RBM_XMM0 #define RBM_FLTARG_1 RBM_XMM1 #define RBM_FLTARG_2 RBM_XMM2 #define RBM_FLTARG_3 RBM_XMM3 #define RBM_FLTARG_REGS (RBM_FLTARG_0|RBM_FLTARG_1|RBM_FLTARG_2|RBM_FLTARG_3) #define RBM_ALLFLOAT (RBM_XMM0 | RBM_XMM1 | RBM_XMM2 | RBM_XMM3 | RBM_XMM4 | RBM_XMM5 | RBM_XMM6 | RBM_XMM7) #define RBM_ALLDOUBLE RBM_ALLFLOAT // TODO-CQ: Currently we are following the x86 ABI for SSE2 registers. // This should be reconsidered. #define RBM_FLT_CALLEE_SAVED RBM_NONE #define RBM_FLT_CALLEE_TRASH RBM_ALLFLOAT #define REG_VAR_ORDER_FLT REG_XMM0, REG_XMM1, REG_XMM2, REG_XMM3, REG_XMM4, REG_XMM5, REG_XMM6, REG_XMM7 #define REG_FLT_CALLEE_SAVED_FIRST REG_XMM6 #define REG_FLT_CALLEE_SAVED_LAST REG_XMM7 #define XMM_REGSIZE_BYTES 16 // XMM register size in bytes #define YMM_REGSIZE_BYTES 32 // YMM register size in bytes #define REGNUM_BITS 6 // number of bits in a REG_* #define TINY_REGNUM_BITS 6 // number used in a tiny instrdesc (same) #else // LEGACY_BACKEND #define FEATURE_FP_REGALLOC 0 // Enabled if RegAlloc is used to enregister Floating Point LclVars #define FP_STK_SIZE 8 #define RBM_ALLFLOAT (RBM_FPV0 | RBM_FPV1 | RBM_FPV2 | RBM_FPV3 | RBM_FPV4 | RBM_FPV5 | RBM_FPV6) #define REG_FP_FIRST REG_FPV0 #define REG_FP_LAST REG_FPV7 #define FIRST_FP_ARGREG REG_NA #define LAST_FP_ARGREG REG_NA #define REGNUM_BITS 3 // number of bits in a REG_* #define TINY_REGNUM_BITS 3 #define REGMASK_BITS 8 // number of bits in a REGNUM_MASK #define RBM_FLTARG_REGS 0 #define RBM_FLT_CALLEE_SAVED 0 #define RBM_FLT_CALLEE_TRASH 0 #endif // LEGACY_BACKEND #define REGSIZE_BYTES 4 // number of bytes in one register #define MIN_ARG_AREA_FOR_CALL 0 // Minimum required outgoing argument space for a call. #define CODE_ALIGN 1 // code alignment requirement #if !defined(UNIX_X86_ABI) #define STACK_ALIGN 4 // stack alignment requirement #define STACK_ALIGN_SHIFT 2 // Shift-right amount to convert stack size in bytes to size in DWORD_PTRs #define STACK_ALIGN_SHIFT_ALL 2 // Shift-right amount to convert stack size in bytes to size in STACK_ALIGN units #else #define STACK_ALIGN 16 // stack alignment requirement #define STACK_ALIGN_SHIFT 4 // Shift-right amount to convert stack size in bytes to size in DWORD_PTRs #define STACK_ALIGN_SHIFT_ALL 4 // Shift-right amount to convert stack size in bytes to size in STACK_ALIGN units #endif // !UNIX_X86_ABI #define RBM_INT_CALLEE_SAVED (RBM_EBX|RBM_ESI|RBM_EDI) #define RBM_INT_CALLEE_TRASH (RBM_EAX|RBM_ECX|RBM_EDX) #define RBM_CALLEE_SAVED (RBM_INT_CALLEE_SAVED | RBM_FLT_CALLEE_SAVED) #define RBM_CALLEE_TRASH (RBM_INT_CALLEE_TRASH | RBM_FLT_CALLEE_TRASH) #define RBM_ALLINT (RBM_INT_CALLEE_SAVED | RBM_INT_CALLEE_TRASH) #define REG_VAR_ORDER REG_EAX,REG_EDX,REG_ECX,REG_ESI,REG_EDI,REG_EBX #define MAX_VAR_ORDER_SIZE 6 #define REG_TMP_ORDER REG_EAX,REG_EDX,REG_ECX,REG_EBX,REG_ESI,REG_EDI #define RBM_TMP_ORDER RBM_EAX,RBM_EDX,RBM_ECX,RBM_EBX,RBM_ESI,RBM_EDI #define REG_TMP_ORDER_COUNT 6 #define REG_PREDICT_ORDER REG_EAX,REG_EDX,REG_ECX,REG_EBX,REG_ESI,REG_EDI // The order here is fixed: it must agree with an order assumed in eetwain... #define REG_CALLEE_SAVED_ORDER REG_EDI,REG_ESI,REG_EBX,REG_EBP #define RBM_CALLEE_SAVED_ORDER RBM_EDI,RBM_ESI,RBM_EBX,RBM_EBP #define CNT_CALLEE_SAVED (4) #define CNT_CALLEE_TRASH (3) #define CNT_CALLEE_ENREG (CNT_CALLEE_SAVED-1) #define CNT_CALLEE_SAVED_FLOAT (0) #define CNT_CALLEE_TRASH_FLOAT (6) #define CALLEE_SAVED_REG_MAXSZ (CNT_CALLEE_SAVED*REGSIZE_BYTES) // EBX,ESI,EDI,EBP // We reuse the ESP register as a illegal value in the register predictor #define RBM_ILLEGAL RBM_ESP // We reuse the ESP register as a flag for last use handling in the register predictor #define RBM_LASTUSE RBM_ESP // We're using the encoding for ESP to indicate a half-long on the frame #define REG_L_STK REG_ESP // This is the first register in REG_TMP_ORDER #define REG_TMP_0 REG_EAX #define RBM_TMP_0 RBM_EAX // This is the second register in REG_TMP_ORDER #define REG_TMP_1 REG_EDX #define RBM_TMP_1 RBM_EDX #define REG_PAIR_TMP REG_PAIR_EAXEDX #define REG_PAIR_TMP_REVERSE REG_PAIR_EDXEAX #define RBM_PAIR_TMP (RBM_EAX|RBM_EDX) #define REG_PAIR_TMP_LO REG_EAX #define RBM_PAIR_TMP_LO RBM_EAX #define REG_PAIR_TMP_HI REG_EDX #define RBM_PAIR_TMP_HI RBM_EDX #define PREDICT_PAIR_TMP PREDICT_PAIR_EAXEDX #define PREDICT_PAIR_TMP_LO PREDICT_REG_EAX // Used when calling the 64-bit Variable shift helper #define REG_LNGARG_0 REG_PAIR_EAXEDX #define RBM_LNGARG_0 (RBM_EAX|RBM_EDX) #define PREDICT_PAIR_LNGARG_0 PREDICT_PAIR_EAXEDX #define REG_LNGARG_LO REG_EAX #define RBM_LNGARG_LO RBM_EAX #define REG_LNGARG_HI REG_EDX #define RBM_LNGARG_HI RBM_EDX // register to hold shift amount #define REG_SHIFT REG_ECX #define RBM_SHIFT RBM_ECX #define PREDICT_REG_SHIFT PREDICT_REG_ECX // register to hold shift amount when shifting 64-bit values #define REG_SHIFT_LNG REG_ECX #define RBM_SHIFT_LNG RBM_ECX #define PREDICT_REG_SHIFT_LNG PREDICT_REG_ECX // This is a general scratch register that does not conflict with the argument registers #define REG_SCRATCH REG_EAX #define RBM_SCRATCH RBM_EAX // Where is the exception object on entry to the handler block? #define REG_EXCEPTION_OBJECT REG_EAX #define RBM_EXCEPTION_OBJECT RBM_EAX // Only used on ARM for GTF_CALL_M_VIRTSTUB_REL_INDIRECT #define REG_JUMP_THUNK_PARAM REG_EAX #define RBM_JUMP_THUNK_PARAM RBM_EAX #if NOGC_WRITE_BARRIERS #define REG_WRITE_BARRIER REG_EDX #define RBM_WRITE_BARRIER RBM_EDX // We don't allow using ebp as a source register. Maybe we should only prevent this for ETW_EBP_FRAMED (but that is always set right now). #define RBM_WRITE_BARRIER_SRC (RBM_EAX|RBM_ECX|RBM_EBX|RBM_ESI|RBM_EDI) #define RBM_CALLEE_TRASH_NOGC RBM_EDX #endif // NOGC_WRITE_BARRIERS // GenericPInvokeCalliHelper unmanaged target parameter #define REG_PINVOKE_TARGET_PARAM REG_EAX #define RBM_PINVOKE_TARGET_PARAM RBM_EAX // GenericPInvokeCalliHelper cookie parameter #define REG_PINVOKE_COOKIE_PARAM REG_STK // IL stub's secret parameter (JitFlags::JIT_FLAG_PUBLISH_SECRET_PARAM) #define REG_SECRET_STUB_PARAM REG_EAX #define RBM_SECRET_STUB_PARAM RBM_EAX // VSD target address register #define REG_VIRTUAL_STUB_TARGET REG_EAX #define RBM_VIRTUAL_STUB_TARGET RBM_EAX // Registers used by PInvoke frame setup #define REG_PINVOKE_FRAME REG_EDI // EDI is p/invoke "Frame" pointer argument to CORINFO_HELP_INIT_PINVOKE_FRAME helper #define RBM_PINVOKE_FRAME RBM_EDI #define REG_PINVOKE_TCB REG_ESI // ESI is set to Thread Control Block (TCB) on return from // CORINFO_HELP_INIT_PINVOKE_FRAME helper #define RBM_PINVOKE_TCB RBM_ESI #define REG_PINVOKE_SCRATCH REG_EAX // EAX is trashed by CORINFO_HELP_INIT_PINVOKE_FRAME helper #define RBM_PINVOKE_SCRATCH RBM_EAX #ifdef LEGACY_BACKEND #define REG_SPILL_CHOICE REG_EAX #define RBM_SPILL_CHOICE RBM_EAX #endif // LEGACY_BACKEND // The following defines are useful for iterating a regNumber #define REG_FIRST REG_EAX #define REG_INT_FIRST REG_EAX #define REG_INT_LAST REG_EDI #define REG_INT_COUNT (REG_INT_LAST - REG_INT_FIRST + 1) #define REG_NEXT(reg) ((regNumber)((unsigned)(reg) + 1)) #define REG_PREV(reg) ((regNumber)((unsigned)(reg) - 1)) // genCodeForCall() moves the target address of the tailcall into this register, before pushing it on the stack #define REG_TAILCALL_ADDR REG_EAX // Which register are int and long values returned in ? #define REG_INTRET REG_EAX #define RBM_INTRET RBM_EAX #define REG_LNGRET REG_PAIR_EAXEDX #define RBM_LNGRET (RBM_EDX|RBM_EAX) #define REG_LNGRET_LO REG_EAX #define RBM_LNGRET_LO RBM_EAX #define REG_LNGRET_HI REG_EDX #define RBM_LNGRET_HI RBM_EDX #define REG_FLOATRET REG_NA #define RBM_FLOATRET RBM_NONE #define RBM_DOUBLERET RBM_NONE // The registers trashed by the CORINFO_HELP_STOP_FOR_GC helper #define RBM_STOP_FOR_GC_TRASH RBM_CALLEE_TRASH // The registers trashed by the CORINFO_HELP_INIT_PINVOKE_FRAME helper. On x86, this helper has a custom calling // convention that takes EDI as argument (but doesn't trash it), trashes EAX, and returns ESI. #define RBM_INIT_PINVOKE_FRAME_TRASH (RBM_PINVOKE_SCRATCH | RBM_PINVOKE_TCB) #define REG_FPBASE REG_EBP #define RBM_FPBASE RBM_EBP #define STR_FPBASE "ebp" #define REG_SPBASE REG_ESP #define RBM_SPBASE RBM_ESP #define STR_SPBASE "esp" #define FIRST_ARG_STACK_OFFS (2*REGSIZE_BYTES) // Caller's saved EBP and return address #define MAX_REG_ARG 2 #define MAX_FLOAT_REG_ARG 0 #define REG_ARG_FIRST REG_ECX #define REG_ARG_LAST REG_EDX #define INIT_ARG_STACK_SLOT 0 // No outgoing reserved stack slots #define REG_ARG_0 REG_ECX #define REG_ARG_1 REG_EDX SELECTANY const regNumber intArgRegs [] = {REG_ECX, REG_EDX}; SELECTANY const regMaskTP intArgMasks[] = {RBM_ECX, RBM_EDX}; #if !FEATURE_STACK_FP_X87 SELECTANY const regNumber fltArgRegs [] = {REG_XMM0, REG_XMM1, REG_XMM2, REG_XMM3}; SELECTANY const regMaskTP fltArgMasks[] = {RBM_XMM0, RBM_XMM1, RBM_XMM2, RBM_XMM3}; #endif // FEATURE_STACK_FP_X87 #define RBM_ARG_0 RBM_ECX #define RBM_ARG_1 RBM_EDX #define RBM_ARG_REGS (RBM_ARG_0|RBM_ARG_1) // The registers trashed by profiler enter/leave/tailcall hook // See vm\i386\asmhelpers.asm for more details. #define RBM_PROFILER_ENTER_TRASH RBM_NONE #define RBM_PROFILER_LEAVE_TRASH RBM_NONE #define RBM_PROFILER_TAILCALL_TRASH (RBM_ALLINT & ~RBM_ARG_REGS) // What sort of reloc do we use for [disp32] address mode #define IMAGE_REL_BASED_DISP32 IMAGE_REL_BASED_HIGHLOW // What sort of reloc to we use for 'moffset' address mode (for 'mov eax, moffset' or 'mov moffset, eax') #define IMAGE_REL_BASED_MOFFSET IMAGE_REL_BASED_HIGHLOW // Pointer-sized string move instructions #define INS_movsp INS_movsd #define INS_r_movsp INS_r_movsd #define INS_stosp INS_stosd #define INS_r_stosp INS_r_stosd #elif defined(_TARGET_AMD64_) // TODO-AMD64-CQ: Fine tune the following xxBlk threshold values: #define CPU_LOAD_STORE_ARCH 0 #define CPU_LONG_USES_REGPAIR 0 #define CPU_HAS_FP_SUPPORT 1 #define ROUND_FLOAT 0 // Do not round intermed float expression results #define CPU_HAS_BYTE_REGS 0 #define CPU_USES_BLOCK_MOVE 1 #define CPBLK_MOVS_LIMIT 16 // When generating code for CpBlk, this is the buffer size // threshold to stop generating rep movs and switch to the helper call. // NOTE: Using rep movs is currently disabled since we found it has bad performance // on pre-Ivy Bridge hardware. #define CPBLK_UNROLL_LIMIT 64 // Upper bound to let the code generator to loop unroll CpBlk. #define INITBLK_STOS_LIMIT 64 // When generating code for InitBlk, this is the buffer size // NOTE: Using rep stos is currently disabled since we found it has bad performance // on pre-Ivy Bridge hardware. // threshold to stop generating rep movs and switch to the helper call. #define INITBLK_UNROLL_LIMIT 128 // Upper bound to let the code generator to loop unroll InitBlk. #define CPOBJ_NONGC_SLOTS_LIMIT 4 // For CpObj code generation, this is the the threshold of the number // of contiguous non-gc slots that trigger generating rep movsq instead of // sequences of movsq instructions // The way we're currently disabling rep movs/stos is by setting a limit less than // its unrolling counterparts. When lower takes the decision on which one to make it // always asks for the unrolling limit first so you can say the JIT 'favors' unrolling. // Setting the limit to something lower than that makes lower to never consider it. #ifdef FEATURE_SIMD #define ALIGN_SIMD_TYPES 1 // whether SIMD type locals are to be aligned #if defined(UNIX_AMD64_ABI) #define FEATURE_PARTIAL_SIMD_CALLEE_SAVE 0 // Whether SIMD registers are partially saved at calls #else // !UNIX_AMD64_ABI #define FEATURE_PARTIAL_SIMD_CALLEE_SAVE 1 // Whether SIMD registers are partially saved at calls #endif // !UNIX_AMD64_ABI #endif #define FEATURE_WRITE_BARRIER 1 // Generate the WriteBarrier calls for GC (currently not the x86-style register-customized barriers) #define FEATURE_FIXED_OUT_ARGS 1 // Preallocate the outgoing arg area in the prolog #define FEATURE_STRUCTPROMOTE 1 // JIT Optimization to promote fields of structs into registers #define FEATURE_MULTIREG_STRUCT_PROMOTE 0 // True when we want to promote fields of a multireg struct into registers #define FEATURE_FASTTAILCALL 1 // Tail calls made as epilog+jmp #define FEATURE_TAILCALL_OPT 1 // opportunistic Tail calls (i.e. without ".tail" prefix) made as fast tail calls. #define FEATURE_SET_FLAGS 0 // Set to true to force the JIT to mark the trees with GTF_SET_FLAGS when the flags need to be set #ifdef UNIX_AMD64_ABI #define FEATURE_MULTIREG_ARGS_OR_RET 1 // Support for passing and/or returning single values in more than one register #define FEATURE_MULTIREG_ARGS 1 // Support for passing a single argument in more than one register #define FEATURE_MULTIREG_RET 1 // Support for returning a single value in more than one register #define FEATURE_STRUCT_CLASSIFIER 1 // Uses a classifier function to determine if structs are passed/returned in more than one register #define MAX_PASS_MULTIREG_BYTES 32 // Maximum size of a struct that could be passed in more than one register (Max is two SIMD16s) #define MAX_RET_MULTIREG_BYTES 32 // Maximum size of a struct that could be returned in more than one register (Max is two SIMD16s) #define MAX_ARG_REG_COUNT 2 // Maximum registers used to pass a single argument in multiple registers. #define MAX_RET_REG_COUNT 2 // Maximum registers used to return a value. #else // !UNIX_AMD64_ABI #define WINDOWS_AMD64_ABI // Uses the Windows ABI for AMD64 #define FEATURE_MULTIREG_ARGS_OR_RET 0 // Support for passing and/or returning single values in more than one register #define FEATURE_MULTIREG_ARGS 0 // Support for passing a single argument in more than one register #define FEATURE_MULTIREG_RET 0 // Support for returning a single value in more than one register #define MAX_PASS_MULTIREG_BYTES 0 // No multireg arguments #define MAX_RET_MULTIREG_BYTES 0 // No multireg return values #define MAX_ARG_REG_COUNT 1 // Maximum registers used to pass a single argument (no arguments are passed using multiple registers) #define MAX_RET_REG_COUNT 1 // Maximum registers used to return a value. #endif // !UNIX_AMD64_ABI #ifdef FEATURE_USE_ASM_GC_WRITE_BARRIERS #define NOGC_WRITE_BARRIERS 0 // We DO-NOT have specialized WriteBarrier JIT Helpers that DO-NOT trash the RBM_CALLEE_TRASH registers #else #define NOGC_WRITE_BARRIERS 0 // Do not modify this -- modify the definition above. (If we're not using ASM barriers we definitely don't have NOGC barriers). #endif #define USER_ARGS_COME_LAST 1 #define EMIT_TRACK_STACK_DEPTH 1 #define TARGET_POINTER_SIZE 8 // equal to sizeof(void*) and the managed pointer size in bytes for this target #define FEATURE_EH 1 // To aid platform bring-up, eliminate exceptional EH clauses (catch, filter, filter-handler, fault) and directly execute 'finally' clauses. #define FEATURE_EH_FUNCLETS 1 #define FEATURE_EH_CALLFINALLY_THUNKS 1 // Generate call-to-finally code in "thunks" in the enclosing EH region, protected by "cloned finally" clauses. #define FEATURE_STACK_FP_X87 0 #ifdef UNIX_AMD64_ABI #define ETW_EBP_FRAMED 1 // if 1 we cannot use EBP as a scratch register and must create EBP based frames for most methods #else // !UNIX_AMD64_ABI #define ETW_EBP_FRAMED 0 // if 1 we cannot use EBP as a scratch register and must create EBP based frames for most methods #endif // !UNIX_AMD64_ABI #define FEATURE_FP_REGALLOC 0 // Enabled if RegAlloc is used to enregister Floating Point LclVars #define CSE_CONSTS 1 // Enable if we want to CSE constants #define RBM_ALLFLOAT (RBM_XMM0 | RBM_XMM1 | RBM_XMM2 | RBM_XMM3 | RBM_XMM4 | RBM_XMM5 | RBM_XMM6 | RBM_XMM7 | RBM_XMM8 | RBM_XMM9 | RBM_XMM10 | RBM_XMM11 | RBM_XMM12 | RBM_XMM13 | RBM_XMM14 | RBM_XMM15) #define RBM_ALLDOUBLE RBM_ALLFLOAT #define REG_FP_FIRST REG_XMM0 #define REG_FP_LAST REG_XMM15 #define FIRST_FP_ARGREG REG_XMM0 #ifdef UNIX_AMD64_ABI #define LAST_FP_ARGREG REG_XMM7 #else // !UNIX_AMD64_ABI #define LAST_FP_ARGREG REG_XMM3 #endif // !UNIX_AMD64_ABI #define REGNUM_BITS 6 // number of bits in a REG_* #define TINY_REGNUM_BITS 6 // number used in a tiny instrdesc (same) #define REGMASK_BITS 32 // number of bits in a REGNUM_MASK #define REGSIZE_BYTES 8 // number of bytes in one register #define XMM_REGSIZE_BYTES 16 // XMM register size in bytes #define YMM_REGSIZE_BYTES 32 // YMM register size in bytes #define CODE_ALIGN 1 // code alignment requirement #define STACK_ALIGN 16 // stack alignment requirement #define STACK_ALIGN_SHIFT 3 // Shift-right amount to convert stack size in bytes to size in pointer sized words #define STACK_ALIGN_SHIFT_ALL 4 // Shift-right amount to convert stack size in bytes to size in STACK_ALIGN units #if ETW_EBP_FRAMED #define RBM_ETW_FRAMED_EBP RBM_NONE #define RBM_ETW_FRAMED_EBP_LIST #define REG_ETW_FRAMED_EBP_LIST #define REG_ETW_FRAMED_EBP_COUNT 0 #else // !ETW_EBP_FRAMED #define RBM_ETW_FRAMED_EBP RBM_EBP #define RBM_ETW_FRAMED_EBP_LIST RBM_EBP, #define REG_ETW_FRAMED_EBP_LIST REG_EBP, #define REG_ETW_FRAMED_EBP_COUNT 1 #endif // !ETW_EBP_FRAMED #ifdef UNIX_AMD64_ABI #define MIN_ARG_AREA_FOR_CALL 0 // Minimum required outgoing argument space for a call. #define RBM_INT_CALLEE_SAVED (RBM_EBX|RBM_ETW_FRAMED_EBP|RBM_R12|RBM_R13|RBM_R14|RBM_R15) #define RBM_INT_CALLEE_TRASH (RBM_EAX|RBM_RDI|RBM_RSI|RBM_EDX|RBM_ECX|RBM_R8|RBM_R9|RBM_R10|RBM_R11) #define RBM_FLT_CALLEE_SAVED (0) #define RBM_FLT_CALLEE_TRASH (RBM_XMM0|RBM_XMM1|RBM_XMM2|RBM_XMM3|RBM_XMM4|RBM_XMM5|RBM_XMM6|RBM_XMM7| \ RBM_XMM8|RBM_XMM9|RBM_XMM10|RBM_XMM11|RBM_XMM12|RBM_XMM13|RBM_XMM14|RBM_XMM15) #define REG_PROFILER_ENTER_ARG_0 REG_R14 #define RBM_PROFILER_ENTER_ARG_0 RBM_R14 #define REG_PROFILER_ENTER_ARG_1 REG_R15 #define RBM_PROFILER_ENTER_ARG_1 RBM_R15 #define REG_DEFAULT_PROFILER_CALL_TARGET REG_R11 #else // !UNIX_AMD64_ABI #define MIN_ARG_AREA_FOR_CALL (4 * REGSIZE_BYTES) // Minimum required outgoing argument space for a call. #define RBM_INT_CALLEE_SAVED (RBM_EBX|RBM_ESI|RBM_EDI|RBM_ETW_FRAMED_EBP|RBM_R12|RBM_R13|RBM_R14|RBM_R15) #define RBM_INT_CALLEE_TRASH (RBM_EAX|RBM_ECX|RBM_EDX|RBM_R8|RBM_R9|RBM_R10|RBM_R11) #define RBM_FLT_CALLEE_SAVED (RBM_XMM6|RBM_XMM7|RBM_XMM8|RBM_XMM9|RBM_XMM10|RBM_XMM11|RBM_XMM12|RBM_XMM13|RBM_XMM14|RBM_XMM15) #define RBM_FLT_CALLEE_TRASH (RBM_XMM0|RBM_XMM1|RBM_XMM2|RBM_XMM3|RBM_XMM4|RBM_XMM5) #endif // !UNIX_AMD64_ABI #define REG_FLT_CALLEE_SAVED_FIRST REG_XMM6 #define REG_FLT_CALLEE_SAVED_LAST REG_XMM15 #define RBM_CALLEE_TRASH (RBM_INT_CALLEE_TRASH | RBM_FLT_CALLEE_TRASH) #define RBM_CALLEE_SAVED (RBM_INT_CALLEE_SAVED | RBM_FLT_CALLEE_SAVED) #define RBM_CALLEE_TRASH_NOGC RBM_CALLEE_TRASH #define RBM_ALLINT (RBM_INT_CALLEE_SAVED | RBM_INT_CALLEE_TRASH) #if 0 #define REG_VAR_ORDER REG_EAX,REG_EDX,REG_ECX,REG_ESI,REG_EDI,REG_EBX,REG_ETW_FRAMED_EBP_LIST \ REG_R8,REG_R9,REG_R10,REG_R11,REG_R14,REG_R15,REG_R12,REG_R13 #else // TEMPORARY ORDER TO AVOID CALLEE-SAVES // TODO-CQ: Review this and set appropriately #ifdef UNIX_AMD64_ABI #define REG_VAR_ORDER REG_EAX,REG_EDI,REG_ESI, \ REG_EDX,REG_ECX,REG_R8,REG_R9, \ REG_R10,REG_R11,REG_EBX,REG_ETW_FRAMED_EBP_LIST \ REG_R14,REG_R15,REG_R12,REG_R13 #else // !UNIX_AMD64_ABI #define REG_VAR_ORDER REG_EAX,REG_EDX,REG_ECX, \ REG_R8,REG_R9,REG_R10,REG_R11, \ REG_ESI,REG_EDI,REG_EBX,REG_ETW_FRAMED_EBP_LIST \ REG_R14,REG_R15,REG_R12,REG_R13 #endif // !UNIX_AMD64_ABI #endif #define REG_VAR_ORDER_FLT REG_XMM0,REG_XMM1,REG_XMM2,REG_XMM3,REG_XMM4,REG_XMM5,REG_XMM6,REG_XMM7,REG_XMM8,REG_XMM9,REG_XMM10,REG_XMM11,REG_XMM12,REG_XMM13,REG_XMM14,REG_XMM15 #ifdef UNIX_AMD64_ABI #define REG_TMP_ORDER REG_EAX,REG_EDI,REG_ESI,REG_EDX,REG_ECX,REG_EBX,REG_ETW_FRAMED_EBP_LIST \ REG_R8,REG_R9,REG_R10,REG_R11,REG_R14,REG_R15,REG_R12,REG_R13 #else // !UNIX_AMD64_ABI #define MAX_VAR_ORDER_SIZE (14 + REG_ETW_FRAMED_EBP_COUNT) #define REG_TMP_ORDER REG_EAX,REG_EDX,REG_ECX,REG_EBX,REG_ESI,REG_EDI,REG_ETW_FRAMED_EBP_LIST \ REG_R8,REG_R9,REG_R10,REG_R11,REG_R14,REG_R15,REG_R12,REG_R13 #endif // !UNIX_AMD64_ABI #ifdef UNIX_AMD64_ABI #define REG_PREDICT_ORDER REG_EAX,REG_EDI,REG_ESI,REG_EDX,REG_ECX,REG_EBX,REG_ETW_FRAMED_EBP_LIST \ REG_R8,REG_R9,REG_R10,REG_R11,REG_R14,REG_R15,REG_R12,REG_R13 #define CNT_CALLEE_SAVED (5 + REG_ETW_FRAMED_EBP_COUNT) #define CNT_CALLEE_TRASH (9) #define CNT_CALLEE_ENREG (CNT_CALLEE_SAVED) #define CNT_CALLEE_SAVED_FLOAT (0) #define CNT_CALLEE_TRASH_FLOAT (16) #define REG_CALLEE_SAVED_ORDER REG_EBX,REG_ETW_FRAMED_EBP_LIST REG_R12,REG_R13,REG_R14,REG_R15 #define RBM_CALLEE_SAVED_ORDER RBM_EBX,RBM_ETW_FRAMED_EBP_LIST RBM_R12,RBM_R13,RBM_R14,RBM_R15 #else // !UNIX_AMD64_ABI #define REG_TMP_ORDER_COUNT (14 + REG_ETW_FRAMED_EBP_COUNT) #define REG_PREDICT_ORDER REG_EAX,REG_EDX,REG_ECX,REG_EBX,REG_ESI,REG_EDI,REG_ETW_FRAMED_EBP_LIST \ REG_R8,REG_R9,REG_R10,REG_R11,REG_R14,REG_R15,REG_R12,REG_R13 #define CNT_CALLEE_SAVED (7 + REG_ETW_FRAMED_EBP_COUNT) #define CNT_CALLEE_TRASH (7) #define CNT_CALLEE_ENREG (CNT_CALLEE_SAVED) #define CNT_CALLEE_SAVED_FLOAT (10) #define CNT_CALLEE_TRASH_FLOAT (6) #define REG_CALLEE_SAVED_ORDER REG_EBX,REG_ESI,REG_EDI,REG_ETW_FRAMED_EBP_LIST REG_R12,REG_R13,REG_R14,REG_R15 #define RBM_CALLEE_SAVED_ORDER RBM_EBX,RBM_ESI,RBM_EDI,RBM_ETW_FRAMED_EBP_LIST RBM_R12,RBM_R13,RBM_R14,RBM_R15 #endif // !UNIX_AMD64_ABI #define CALLEE_SAVED_REG_MAXSZ (CNT_CALLEE_SAVED*REGSIZE_BYTES) #define CALLEE_SAVED_FLOAT_MAXSZ (CNT_CALLEE_SAVED_FLOAT*16) // We reuse the ESP register as a illegal value in the register predictor #define RBM_ILLEGAL RBM_ESP // We reuse the ESP register as a flag for last use handling in the register predictor #define RBM_LASTUSE RBM_ESP // We're using the encoding for ESP to indicate a half-long on the frame #define REG_L_STK REG_ESP // This is the first register in REG_TMP_ORDER #define REG_TMP_0 REG_EAX #define RBM_TMP_0 RBM_EAX // This is the second register in REG_TMP_ORDER #ifdef UNIX_AMD64_ABI #define REG_TMP_1 REG_EDI #define RBM_TMP_1 RBM_EDI #else // !UNIX_AMD64_ABI #define REG_TMP_1 REG_EDX #define RBM_TMP_1 RBM_EDX #endif // !UNIX_AMD64_ABI #define REG_PAIR_TMP REG_PAIR_EAXEDX #define RBM_PAIR_TMP (RBM_EAX|RBM_EDX) #define REG_PAIR_TMP_LO REG_EAX #define RBM_PAIR_TMP_LO RBM_EAX #define REG_PAIR_TMP_HI REG_EDX #define RBM_PAIR_TMP_HI RBM_EDX #define PREDICT_PAIR_TMP PREDICT_PAIR_RAXRDX #define PREDICT_PAIR_TMP_LO PREDICT_REG_EAX // register to hold shift amount #define REG_SHIFT REG_ECX #define RBM_SHIFT RBM_ECX #define PREDICT_REG_SHIFT PREDICT_REG_ECX // This is a general scratch register that does not conflict with the argument registers #define REG_SCRATCH REG_EAX #define RBM_SCRATCH RBM_EAX // Where is the exception object on entry to the handler block? #ifdef UNIX_AMD64_ABI #define REG_EXCEPTION_OBJECT REG_ESI #define RBM_EXCEPTION_OBJECT RBM_ESI #else // !UNIX_AMD64_ABI #define REG_EXCEPTION_OBJECT REG_EDX #define RBM_EXCEPTION_OBJECT RBM_EDX #endif // !UNIX_AMD64_ABI #define REG_JUMP_THUNK_PARAM REG_EAX #define RBM_JUMP_THUNK_PARAM RBM_EAX #if NOGC_WRITE_BARRIERS #define REG_WRITE_BARRIER REG_EDX #define RBM_WRITE_BARRIER RBM_EDX #endif // Register to be used for emitting helper calls whose call target is an indir of an // absolute memory address in case of Rel32 overflow i.e. a data address could not be // encoded as PC-relative 32-bit offset. // // Notes: // 1) that RAX is callee trash register that is not used for passing parameter and // also results in smaller instruction encoding. // 2) Profiler Leave callback requires the return value to be preserved // in some form. We can use custom calling convention for Leave callback. // For e.g return value could be preserved in rcx so that it is available for // profiler. #define REG_DEFAULT_HELPER_CALL_TARGET REG_RAX // GenericPInvokeCalliHelper VASigCookie Parameter #define REG_PINVOKE_COOKIE_PARAM REG_R11 #define RBM_PINVOKE_COOKIE_PARAM RBM_R11 #define PREDICT_REG_PINVOKE_COOKIE_PARAM PREDICT_REG_R11 // GenericPInvokeCalliHelper unmanaged target Parameter #define REG_PINVOKE_TARGET_PARAM REG_R10 #define RBM_PINVOKE_TARGET_PARAM RBM_R10 #define PREDICT_REG_PINVOKE_TARGET_PARAM PREDICT_REG_R10 // IL stub's secret MethodDesc parameter (JitFlags::JIT_FLAG_PUBLISH_SECRET_PARAM) #define REG_SECRET_STUB_PARAM REG_R10 #define RBM_SECRET_STUB_PARAM RBM_R10 // Registers used by PInvoke frame setup #define REG_PINVOKE_FRAME REG_EDI #define RBM_PINVOKE_FRAME RBM_EDI #define REG_PINVOKE_TCB REG_EAX #define RBM_PINVOKE_TCB RBM_EAX #define REG_PINVOKE_SCRATCH REG_EAX #define RBM_PINVOKE_SCRATCH RBM_EAX // The following defines are useful for iterating a regNumber #define REG_FIRST REG_EAX #define REG_INT_FIRST REG_EAX #define REG_INT_LAST REG_R15 #define REG_INT_COUNT (REG_INT_LAST - REG_INT_FIRST + 1) #define REG_NEXT(reg) ((regNumber)((unsigned)(reg) + 1)) #define REG_PREV(reg) ((regNumber)((unsigned)(reg) - 1)) // genCodeForCall() moves the target address of the tailcall into this register, before pushing it on the stack #define REG_TAILCALL_ADDR REG_RDX // Which register are int and long values returned in ? #define REG_INTRET REG_EAX #define RBM_INTRET RBM_EAX #define REG_LNGRET REG_EAX #define RBM_LNGRET RBM_EAX #ifdef FEATURE_UNIX_AMD64_STRUCT_PASSING #define REG_INTRET_1 REG_RDX #define RBM_INTRET_1 RBM_RDX #define REG_LNGRET_1 REG_RDX #define RBM_LNGRET_1 RBM_RDX #endif // FEATURE_UNIX_AMD64_STRUCT_PASSING #define REG_FLOATRET REG_XMM0 #define RBM_FLOATRET RBM_XMM0 #define REG_DOUBLERET REG_XMM0 #define RBM_DOUBLERET RBM_XMM0 #ifdef FEATURE_UNIX_AMD64_STRUCT_PASSING #define REG_FLOATRET_1 REG_XMM1 #define RBM_FLOATRET_1 RBM_XMM1 #define REG_DOUBLERET_1 REG_XMM1 #define RBM_DOUBLERET_1 RBM_XMM1 #endif // FEATURE_UNIX_AMD64_STRUCT_PASSING #define REG_FPBASE REG_EBP #define RBM_FPBASE RBM_EBP #define STR_FPBASE "rbp" #define REG_SPBASE REG_ESP #define RBM_SPBASE RBM_ESP #define STR_SPBASE "rsp" #define FIRST_ARG_STACK_OFFS (REGSIZE_BYTES) // return address #ifdef UNIX_AMD64_ABI #define MAX_REG_ARG 6 #define MAX_FLOAT_REG_ARG 8 #define REG_ARG_FIRST REG_EDI #define REG_ARG_LAST REG_R9 #define INIT_ARG_STACK_SLOT 0 // No outgoing reserved stack slots #define REG_ARG_0 REG_EDI #define REG_ARG_1 REG_ESI #define REG_ARG_2 REG_EDX #define REG_ARG_3 REG_ECX #define REG_ARG_4 REG_R8 #define REG_ARG_5 REG_R9 SELECTANY const regNumber intArgRegs [] = { REG_EDI, REG_ESI, REG_EDX, REG_ECX, REG_R8, REG_R9 }; SELECTANY const regMaskTP intArgMasks[] = { RBM_EDI, RBM_ESI, RBM_EDX, RBM_ECX, RBM_R8, RBM_R9 }; SELECTANY const regNumber fltArgRegs [] = { REG_XMM0, REG_XMM1, REG_XMM2, REG_XMM3, REG_XMM4, REG_XMM5, REG_XMM6, REG_XMM7 }; SELECTANY const regMaskTP fltArgMasks[] = { RBM_XMM0, RBM_XMM1, RBM_XMM2, RBM_XMM3, RBM_XMM4, RBM_XMM5, RBM_XMM6, RBM_XMM7 }; #define RBM_ARG_0 RBM_RDI #define RBM_ARG_1 RBM_RSI #define RBM_ARG_2 RBM_EDX #define RBM_ARG_3 RBM_ECX #define RBM_ARG_4 RBM_R8 #define RBM_ARG_5 RBM_R9 #else // !UNIX_AMD64_ABI #define MAX_REG_ARG 4 #define MAX_FLOAT_REG_ARG 4 #define REG_ARG_FIRST REG_ECX #define REG_ARG_LAST REG_R9 #define INIT_ARG_STACK_SLOT 4 // 4 outgoing reserved stack slots #define REG_ARG_0 REG_ECX #define REG_ARG_1 REG_EDX #define REG_ARG_2 REG_R8 #define REG_ARG_3 REG_R9 SELECTANY const regNumber intArgRegs [] = { REG_ECX, REG_EDX, REG_R8, REG_R9 }; SELECTANY const regMaskTP intArgMasks[] = { RBM_ECX, RBM_EDX, RBM_R8, RBM_R9 }; SELECTANY const regNumber fltArgRegs [] = { REG_XMM0, REG_XMM1, REG_XMM2, REG_XMM3 }; SELECTANY const regMaskTP fltArgMasks[] = { RBM_XMM0, RBM_XMM1, RBM_XMM2, RBM_XMM3 }; #define RBM_ARG_0 RBM_ECX #define RBM_ARG_1 RBM_EDX #define RBM_ARG_2 RBM_R8 #define RBM_ARG_3 RBM_R9 #endif // !UNIX_AMD64_ABI #define REG_FLTARG_0 REG_XMM0 #define REG_FLTARG_1 REG_XMM1 #define REG_FLTARG_2 REG_XMM2 #define REG_FLTARG_3 REG_XMM3 #define RBM_FLTARG_0 RBM_XMM0 #define RBM_FLTARG_1 RBM_XMM1 #define RBM_FLTARG_2 RBM_XMM2 #define RBM_FLTARG_3 RBM_XMM3 #ifdef UNIX_AMD64_ABI #define REG_FLTARG_4 REG_XMM4 #define REG_FLTARG_5 REG_XMM5 #define REG_FLTARG_6 REG_XMM6 #define REG_FLTARG_7 REG_XMM7 #define RBM_FLTARG_4 RBM_XMM4 #define RBM_FLTARG_5 RBM_XMM5 #define RBM_FLTARG_6 RBM_XMM6 #define RBM_FLTARG_7 RBM_XMM7 #define RBM_ARG_REGS (RBM_ARG_0|RBM_ARG_1|RBM_ARG_2|RBM_ARG_3|RBM_ARG_4|RBM_ARG_5) #define RBM_FLTARG_REGS (RBM_FLTARG_0|RBM_FLTARG_1|RBM_FLTARG_2|RBM_FLTARG_3|RBM_FLTARG_4|RBM_FLTARG_5|RBM_FLTARG_6|RBM_FLTARG_7) #else // !UNIX_AMD64_ABI #define RBM_ARG_REGS (RBM_ARG_0|RBM_ARG_1|RBM_ARG_2|RBM_ARG_3) #define RBM_FLTARG_REGS (RBM_FLTARG_0|RBM_FLTARG_1|RBM_FLTARG_2|RBM_FLTARG_3) #endif // !UNIX_AMD64_ABI // The registers trashed by profiler enter/leave/tailcall hook // See vm\amd64\asmhelpers.asm for more details. #define RBM_PROFILER_ENTER_TRASH RBM_CALLEE_TRASH #define RBM_PROFILER_LEAVE_TRASH (RBM_CALLEE_TRASH & ~(RBM_FLOATRET | RBM_INTRET)) #define RBM_PROFILER_TAILCALL_TRASH RBM_PROFILER_LEAVE_TRASH // The registers trashed by the CORINFO_HELP_STOP_FOR_GC helper. #ifdef FEATURE_UNIX_AMD64_STRUCT_PASSING // See vm\amd64\unixasmhelpers.S for more details. // // On Unix a struct of size >=9 and <=16 bytes in size is returned in two return registers. // The return registers could be any two from the set { RAX, RDX, XMM0, XMM1 }. // STOP_FOR_GC helper preserves all the 4 possible return registers. #define RBM_STOP_FOR_GC_TRASH (RBM_CALLEE_TRASH & ~(RBM_FLOATRET | RBM_INTRET | RBM_FLOATRET_1 | RBM_INTRET_1)) #else // See vm\amd64\asmhelpers.asm for more details. #define RBM_STOP_FOR_GC_TRASH (RBM_CALLEE_TRASH & ~(RBM_FLOATRET | RBM_INTRET)) #endif // The registers trashed by the CORINFO_HELP_INIT_PINVOKE_FRAME helper. #define RBM_INIT_PINVOKE_FRAME_TRASH RBM_CALLEE_TRASH // What sort of reloc do we use for [disp32] address mode #define IMAGE_REL_BASED_DISP32 IMAGE_REL_BASED_REL32 // What sort of reloc to we use for 'moffset' address mode (for 'mov eax, moffset' or 'mov moffset, eax') #define IMAGE_REL_BASED_MOFFSET IMAGE_REL_BASED_DIR64 // Pointer-sized string move instructions #define INS_movsp INS_movsq #define INS_r_movsp INS_r_movsq #define INS_stosp INS_stosq #define INS_r_stosp INS_r_stosq #elif defined(_TARGET_ARM_) // TODO-ARM-CQ: Use shift for division by power of 2 // TODO-ARM-CQ: Check for sdiv/udiv at runtime and generate it if available #define USE_HELPERS_FOR_INT_DIV 1 // BeagleBoard (ARMv7A) doesn't support SDIV/UDIV #define CPU_LOAD_STORE_ARCH 1 #ifdef LEGACY_BACKEND #define CPU_LONG_USES_REGPAIR 1 #else #define CPU_LONG_USES_REGPAIR 0 #endif #define CPU_HAS_FP_SUPPORT 1 #define ROUND_FLOAT 0 // Do not round intermed float expression results #define CPU_HAS_BYTE_REGS 0 #define CPU_USES_BLOCK_MOVE 0 #define CPBLK_UNROLL_LIMIT 32 // Upper bound to let the code generator to loop unroll CpBlk. #define INITBLK_UNROLL_LIMIT 32 // Upper bound to let the code generator to loop unroll InitBlk. #define FEATURE_WRITE_BARRIER 1 // Generate the proper WriteBarrier calls for GC #define FEATURE_FIXED_OUT_ARGS 1 // Preallocate the outgoing arg area in the prolog #define FEATURE_STRUCTPROMOTE 1 // JIT Optimization to promote fields of structs into registers #define FEATURE_MULTIREG_STRUCT_PROMOTE 0 // True when we want to promote fields of a multireg struct into registers #define FEATURE_FASTTAILCALL 0 // Tail calls made as epilog+jmp #define FEATURE_TAILCALL_OPT 0 // opportunistic Tail calls (i.e. without ".tail" prefix) made as fast tail calls. #define FEATURE_SET_FLAGS 1 // Set to true to force the JIT to mark the trees with GTF_SET_FLAGS when the flags need to be set #define FEATURE_MULTIREG_ARGS_OR_RET 1 // Support for passing and/or returning single values in more than one register (including HFA support) #define FEATURE_MULTIREG_ARGS 1 // Support for passing a single argument in more than one register (including passing HFAs) #define FEATURE_MULTIREG_RET 1 // Support for returning a single value in more than one register (including HFA returns) #define FEATURE_STRUCT_CLASSIFIER 0 // Uses a classifier function to determine is structs are passed/returned in more than one register #define MAX_PASS_MULTIREG_BYTES 32 // Maximum size of a struct that could be passed in more than one register (Max is an HFA of 4 doubles) #define MAX_RET_MULTIREG_BYTES 32 // Maximum size of a struct that could be returned in more than one register (Max is an HFA of 4 doubles) #define MAX_ARG_REG_COUNT 4 // Maximum registers used to pass a single argument in multiple registers. (max is 4 floats or doubles using an HFA) #define MAX_RET_REG_COUNT 4 // Maximum registers used to return a value. #ifdef FEATURE_USE_ASM_GC_WRITE_BARRIERS #define NOGC_WRITE_BARRIERS 0 // We DO-NOT have specialized WriteBarrier JIT Helpers that DO-NOT trash the RBM_CALLEE_TRASH registers #else #define NOGC_WRITE_BARRIERS 0 // Do not modify this -- modify the definition above. (If we're not using ASM barriers we definitely don't have NOGC barriers). #endif #define USER_ARGS_COME_LAST 1 #define EMIT_TRACK_STACK_DEPTH 1 // This is something of a workaround. For both ARM and AMD64, the frame size is fixed, so we don't really // need to track stack depth, but this is currently necessary to get GC information reported at call sites. #define TARGET_POINTER_SIZE 4 // equal to sizeof(void*) and the managed pointer size in bytes for this target #define FEATURE_EH 1 // To aid platform bring-up, eliminate exceptional EH clauses (catch, filter, filter-handler, fault) and directly execute 'finally' clauses. #define FEATURE_EH_FUNCLETS 1 #define FEATURE_EH_CALLFINALLY_THUNKS 0 // Generate call-to-finally code in "thunks" in the enclosing EH region, protected by "cloned finally" clauses. #define FEATURE_STACK_FP_X87 0 #define ETW_EBP_FRAMED 1 // if 1 we cannot use REG_FP as a scratch register and must setup the frame pointer for most methods #define FEATURE_FP_REGALLOC 1 // Enabled if RegAlloc is used to enregister Floating Point LclVars #define CSE_CONSTS 1 // Enable if we want to CSE constants #define REG_FP_FIRST REG_F0 #define REG_FP_LAST REG_F31 #define FIRST_FP_ARGREG REG_F0 #define LAST_FP_ARGREG REG_F15 #define REGNUM_BITS 6 // number of bits in a REG_* #define TINY_REGNUM_BITS 4 // number of bits we will use for a tiny instr desc (may not use float) #define REGMASK_BITS 64 // number of bits in a REGNUM_MASK #define REGSIZE_BYTES 4 // number of bytes in one register #define MIN_ARG_AREA_FOR_CALL 0 // Minimum required outgoing argument space for a call. #define CODE_ALIGN 2 // code alignment requirement #define STACK_ALIGN 8 // stack alignment requirement #define STACK_ALIGN_SHIFT 2 // Shift-right amount to convert stack size in bytes to size in DWORD_PTRs #define RBM_INT_CALLEE_SAVED (RBM_R4|RBM_R5|RBM_R6|RBM_R7|RBM_R8|RBM_R9|RBM_R10) #define RBM_INT_CALLEE_TRASH (RBM_R0|RBM_R1|RBM_R2|RBM_R3|RBM_R12|RBM_LR) #define RBM_FLT_CALLEE_SAVED (RBM_F16|RBM_F17|RBM_F18|RBM_F19|RBM_F20|RBM_F21|RBM_F22|RBM_F23|RBM_F24|RBM_F25|RBM_F26|RBM_F27|RBM_F28|RBM_F29|RBM_F30|RBM_F31) #define RBM_FLT_CALLEE_TRASH (RBM_F0|RBM_F1|RBM_F2|RBM_F3|RBM_F4|RBM_F5|RBM_F6|RBM_F7|RBM_F8|RBM_F9|RBM_F10|RBM_F11|RBM_F12|RBM_F13|RBM_F14|RBM_F15) #define RBM_CALLEE_SAVED (RBM_INT_CALLEE_SAVED | RBM_FLT_CALLEE_SAVED) #define RBM_CALLEE_TRASH (RBM_INT_CALLEE_TRASH | RBM_FLT_CALLEE_TRASH) #ifdef LEGACY_BACKEND #define RBM_CALLEE_TRASH_NOGC (RBM_R2|RBM_R3|RBM_LR) #else #define RBM_CALLEE_TRASH_NOGC RBM_CALLEE_TRASH #endif #define REG_DEFAULT_HELPER_CALL_TARGET REG_R12 #define REG_FASTTAILCALL_TARGET REG_R12 // Target register for fast tail call #define RBM_FASTTAILCALL_TARGET RBM_R12 #define RBM_ALLINT (RBM_INT_CALLEE_SAVED | RBM_INT_CALLEE_TRASH) #define RBM_ALLFLOAT (RBM_FLT_CALLEE_SAVED | RBM_FLT_CALLEE_TRASH) #define RBM_ALLDOUBLE (RBM_F0|RBM_F2|RBM_F4|RBM_F6|RBM_F8|RBM_F10|RBM_F12|RBM_F14|RBM_F16|RBM_F18|RBM_F20|RBM_F22|RBM_F24|RBM_F26|RBM_F28|RBM_F30) #define REG_VAR_ORDER REG_R3,REG_R2,REG_R1,REG_R0,REG_R4,REG_LR,REG_R12,\ REG_R5,REG_R6,REG_R7,REG_R8,REG_R9,REG_R10 #define REG_VAR_ORDER_FLT REG_F8, REG_F9, REG_F10, REG_F11, \ REG_F12, REG_F13, REG_F14, REG_F15, \ REG_F6, REG_F7, REG_F4, REG_F5, \ REG_F2, REG_F3, REG_F0, REG_F1, \ REG_F16, REG_F17, REG_F18, REG_F19, \ REG_F20, REG_F21, REG_F22, REG_F23, \ REG_F24, REG_F25, REG_F26, REG_F27, \ REG_F28, REG_F29, REG_F30, REG_F31, #define MAX_VAR_ORDER_SIZE 32 #define REG_TMP_ORDER REG_R3,REG_R2,REG_R1,REG_R0, REG_R4,REG_R5,REG_R6,REG_R7,\ REG_LR,REG_R12, REG_R8,REG_R9,REG_R10 #define REG_TMP_ORDER_COUNT 13 #define REG_FLT_TMP_ORDER REG_F14, REG_F15, REG_F12, REG_F13, \ REG_F10, REG_F11, REG_F8, REG_F9, \ REG_F6, REG_F7, REG_F4, REG_F5, \ REG_F2, REG_F3, REG_F0, REG_F1, \ REG_F16, REG_F17, REG_F18, REG_F19, \ REG_F20, REG_F21, REG_F22, REG_F23, \ REG_F24, REG_F25, REG_F26, REG_F27, \ REG_F28, REG_F29, REG_F30, REG_F31, #define REG_FLT_TMP_ORDER_COUNT 32 #define REG_PREDICT_ORDER REG_LR,REG_R12,REG_R3,REG_R2,REG_R1,REG_R0, \ REG_R7,REG_R6,REG_R5,REG_R4,REG_R8,REG_R9,REG_R10 #define RBM_LOW_REGS (RBM_R0|RBM_R1|RBM_R2|RBM_R3|RBM_R4|RBM_R5|RBM_R6|RBM_R7) #define RBM_HIGH_REGS (RBM_R8|RBM_R9|RBM_R10|RBM_R11|RBM_R12|RBM_SP|RBM_LR|RBM_PC) #define REG_CALLEE_SAVED_ORDER REG_R4,REG_R5,REG_R6,REG_R7,REG_R8,REG_R9,REG_R10,REG_R11 #define RBM_CALLEE_SAVED_ORDER RBM_R4,RBM_R5,RBM_R6,RBM_R7,RBM_R8,RBM_R9,RBM_R10,RBM_R11 #define CNT_CALLEE_SAVED (8) #define CNT_CALLEE_TRASH (6) #define CNT_CALLEE_ENREG (CNT_CALLEE_SAVED-1) #define CNT_CALLEE_SAVED_FLOAT (16) #define CNT_CALLEE_TRASH_FLOAT (16) #define CALLEE_SAVED_REG_MAXSZ (CNT_CALLEE_SAVED*REGSIZE_BYTES) #define CALLEE_SAVED_FLOAT_MAXSZ (CNT_CALLEE_SAVED_FLOAT*sizeof(float)) // We reuse the ESP register as a illegal value in the register predictor #define RBM_ILLEGAL RBM_SP // We reuse the ESP register as a flag for last use handling in the register predictor #define RBM_LASTUSE RBM_SP // We're using the encoding for ESP to indicate a half-long on the frame #define REG_L_STK REG_SP // This is the first register in REG_TMP_ORDER #define REG_TMP_0 REG_R3 #define RBM_TMP_0 RBM_R3 // This is the second register in REG_TMP_ORDER #define REG_TMP_1 REG_R2 #define RBM_TMP_1 RBM_R2 // This is the first register pair in REG_TMP_ORDER #define REG_PAIR_TMP REG_PAIR_R2R3 #define REG_PAIR_TMP_REVERSE REG_PAIR_R3R2 #define RBM_PAIR_TMP (RBM_R2|RBM_R3) #define REG_PAIR_TMP_LO REG_R2 #define RBM_PAIR_TMP_LO RBM_R2 #define REG_PAIR_TMP_HI REG_R3 #define RBM_PAIR_TMP_HI RBM_R3 #define PREDICT_PAIR_TMP PREDICT_PAIR_R2R3 #define PREDICT_PAIR_TMP_LO PREDICT_REG_R2 // Used when calling the 64-bit Variable shift helper #define REG_LNGARG_0 REG_PAIR_R0R1 #define RBM_LNGARG_0 (RBM_R0|RBM_R1) #define PREDICT_PAIR_LNGARG_0 PREDICT_PAIR_R0R1 // register to hold shift amount; no special register is required on the ARM #define REG_SHIFT REG_NA #define RBM_SHIFT RBM_ALLINT #define PREDICT_REG_SHIFT PREDICT_REG // register to hold shift amount when shifting 64-bit values (this uses a helper call) #define REG_SHIFT_LNG REG_R2 // REG_ARG_2 #define RBM_SHIFT_LNG RBM_R2 // RBM_ARG_2 #define PREDICT_REG_SHIFT_LNG PREDICT_REG_R2 // This is a general scratch register that does not conflict with the argument registers #define REG_SCRATCH REG_LR #define RBM_SCRATCH RBM_LR // This is a general register that can be optionally reserved for other purposes during codegen #define REG_OPT_RSVD REG_R10 #define RBM_OPT_RSVD RBM_R10 // We reserve R9 to store SP on entry for stack unwinding when localloc is used #define REG_SAVED_LOCALLOC_SP REG_R9 #define RBM_SAVED_LOCALLOC_SP RBM_R9 // Where is the exception object on entry to the handler block? #define REG_EXCEPTION_OBJECT REG_R0 #define RBM_EXCEPTION_OBJECT RBM_R0 #define REG_JUMP_THUNK_PARAM REG_R12 #define RBM_JUMP_THUNK_PARAM RBM_R12 #if NOGC_WRITE_BARRIERS #define REG_WRITE_BARRIER REG_R1 #define RBM_WRITE_BARRIER RBM_R1 #endif //In the ARM case, registers of write barrier use the normal argument registers. #define REG_WRITE_BARRIER_SRC_BYREF REG_ARG_1 #define RBM_WRITE_BARRIER_SRC_BYREF RBM_ARG_1 #define REG_WRITE_BARRIER_DST_BYREF REG_ARG_0 #define RBM_WRITE_BARRIER_DST_BYREF RBM_ARG_0 // GenericPInvokeCalliHelper VASigCookie Parameter #define REG_PINVOKE_COOKIE_PARAM REG_R4 #define RBM_PINVOKE_COOKIE_PARAM RBM_R4 #define PREDICT_REG_PINVOKE_COOKIE_PARAM PREDICT_REG_R4 // GenericPInvokeCalliHelper unmanaged target Parameter #define REG_PINVOKE_TARGET_PARAM REG_R12 #define RBM_PINVOKE_TARGET_PARAM RBM_R12 #define PREDICT_REG_PINVOKE_TARGET_PARAM PREDICT_REG_R12 // IL stub's secret MethodDesc parameter (JitFlags::JIT_FLAG_PUBLISH_SECRET_PARAM) #define REG_SECRET_STUB_PARAM REG_R12 #define RBM_SECRET_STUB_PARAM RBM_R12 // R2R indirect call. Use the same registers as VSD #define REG_R2R_INDIRECT_PARAM REG_R4 #define RBM_R2R_INDIRECT_PARAM RBM_R4 // Registers used by PInvoke frame setup #define REG_PINVOKE_FRAME REG_R4 #define RBM_PINVOKE_FRAME RBM_R4 #define REG_PINVOKE_TCB REG_R5 #define RBM_PINVOKE_TCB RBM_R5 #define REG_PINVOKE_SCRATCH REG_R6 #define RBM_PINVOKE_SCRATCH RBM_R6 #ifdef LEGACY_BACKEND #define REG_SPILL_CHOICE REG_LR #define RBM_SPILL_CHOICE RBM_LR #define REG_SPILL_CHOICE_FLT REG_F14 #define RBM_SPILL_CHOICE_FLT (RBM_F14|RBM_F15) #endif // LEGACY_BACKEND // The following defines are useful for iterating a regNumber #define REG_FIRST REG_R0 #define REG_INT_FIRST REG_R0 #define REG_INT_LAST REG_LR #define REG_INT_COUNT (REG_INT_LAST - REG_INT_FIRST + 1) #define REG_NEXT(reg) ((regNumber)((unsigned)(reg) + 1)) #define REG_PREV(reg) ((regNumber)((unsigned)(reg) - 1)) // genCodeForCall() moves the target address of the tailcall into this register, before pushing it on the stack #define REG_TAILCALL_ADDR REG_R1 // The following registers are used in emitting Enter/Leave/Tailcall profiler callbacks #define REG_PROFILER_ENTER_ARG REG_R0 #define RBM_PROFILER_ENTER_ARG RBM_R0 #define REG_PROFILER_RET_SCRATCH REG_R2 #define RBM_PROFILER_RET_SCRATCH RBM_R2 #define RBM_PROFILER_RET_USED (RBM_R0 | RBM_R1 | RBM_R2) #define REG_PROFILER_JMP_ARG REG_R0 #define RBM_PROFILER_JMP_USED RBM_R0 #define RBM_PROFILER_TAIL_USED (RBM_R0 | RBM_R12 | RBM_LR) // Which register are int and long values returned in ? #define REG_INTRET REG_R0 #define RBM_INTRET RBM_R0 #define REG_LNGRET REG_PAIR_R0R1 #define RBM_LNGRET (RBM_R1|RBM_R0) #define REG_LNGRET_LO REG_R0 #define REG_LNGRET_HI REG_R1 #define RBM_LNGRET_LO RBM_R0 #define RBM_LNGRET_HI RBM_R1 #define REG_FLOATRET REG_F0 #define RBM_FLOATRET RBM_F0 #define RBM_DOUBLERET (RBM_F0|RBM_F1) // The registers trashed by the CORINFO_HELP_STOP_FOR_GC helper (JIT_RareDisableHelper). // See vm\arm\amshelpers.asm for more details. #define RBM_STOP_FOR_GC_TRASH (RBM_CALLEE_TRASH & ~(RBM_LNGRET|RBM_R7|RBM_R8|RBM_R11|RBM_DOUBLERET|RBM_F2|RBM_F3|RBM_F4|RBM_F5|RBM_F6|RBM_F7)) // The registers trashed by the CORINFO_HELP_INIT_PINVOKE_FRAME helper. #define RBM_INIT_PINVOKE_FRAME_TRASH (RBM_CALLEE_TRASH | RBM_PINVOKE_TCB | RBM_PINVOKE_SCRATCH) #define REG_FPBASE REG_R11 #define RBM_FPBASE RBM_R11 #define STR_FPBASE "r11" #define REG_SPBASE REG_SP #define RBM_SPBASE RBM_SP #define STR_SPBASE "sp" #define FIRST_ARG_STACK_OFFS (2*REGSIZE_BYTES) // Caller's saved FP and return address #define MAX_REG_ARG 4 #define MAX_FLOAT_REG_ARG 16 #define MAX_HFA_RET_SLOTS 8 #define REG_ARG_FIRST REG_R0 #define REG_ARG_LAST REG_R3 #define REG_ARG_FP_FIRST REG_F0 #define REG_ARG_FP_LAST REG_F7 #define INIT_ARG_STACK_SLOT 0 // No outgoing reserved stack slots #define REG_ARG_0 REG_R0 #define REG_ARG_1 REG_R1 #define REG_ARG_2 REG_R2 #define REG_ARG_3 REG_R3 SELECTANY const regNumber intArgRegs [] = {REG_R0, REG_R1, REG_R2, REG_R3}; SELECTANY const regMaskTP intArgMasks[] = {RBM_R0, RBM_R1, RBM_R2, RBM_R3}; #define RBM_ARG_0 RBM_R0 #define RBM_ARG_1 RBM_R1 #define RBM_ARG_2 RBM_R2 #define RBM_ARG_3 RBM_R3 #define RBM_ARG_REGS (RBM_ARG_0|RBM_ARG_1|RBM_ARG_2|RBM_ARG_3) #define RBM_FLTARG_REGS (RBM_F0|RBM_F1|RBM_F2|RBM_F3|RBM_F4|RBM_F5|RBM_F6|RBM_F7|RBM_F8|RBM_F9|RBM_F10|RBM_F11|RBM_F12|RBM_F13|RBM_F14|RBM_F15) #define RBM_DBL_REGS RBM_ALLDOUBLE SELECTANY const regNumber fltArgRegs [] = {REG_F0, REG_F1, REG_F2, REG_F3, REG_F4, REG_F5, REG_F6, REG_F7, REG_F8, REG_F9, REG_F10, REG_F11, REG_F12, REG_F13, REG_F14, REG_F15 }; SELECTANY const regMaskTP fltArgMasks[] = {RBM_F0, RBM_F1, RBM_F2, RBM_F3, RBM_F4, RBM_F5, RBM_F6, RBM_F7, RBM_F8, RBM_F9, RBM_F10, RBM_F11, RBM_F12, RBM_F13, RBM_F14, RBM_F15 }; #define LBL_DIST_SMALL_MAX_NEG (0) #define LBL_DIST_SMALL_MAX_POS (+1020) #define LBL_DIST_MED_MAX_NEG (-4095) #define LBL_DIST_MED_MAX_POS (+4096) #define JMP_DIST_SMALL_MAX_NEG (-2048) #define JMP_DIST_SMALL_MAX_POS (+2046) #define CALL_DIST_MAX_NEG (-16777216) #define CALL_DIST_MAX_POS (+16777214) #define JCC_DIST_SMALL_MAX_NEG (-256) #define JCC_DIST_SMALL_MAX_POS (+254) #define JCC_DIST_MEDIUM_MAX_NEG (-1048576) #define JCC_DIST_MEDIUM_MAX_POS (+1048574) #define LBL_SIZE_SMALL (2) #define JMP_SIZE_SMALL (2) #define JMP_SIZE_LARGE (4) #define JCC_SIZE_SMALL (2) #define JCC_SIZE_MEDIUM (4) #define JCC_SIZE_LARGE (6) #elif defined(_TARGET_ARM64_) #define CPU_LOAD_STORE_ARCH 1 #define CPU_LONG_USES_REGPAIR 0 #define CPU_HAS_FP_SUPPORT 1 #define ROUND_FLOAT 0 // Do not round intermed float expression results #define CPU_HAS_BYTE_REGS 0 #define CPU_USES_BLOCK_MOVE 0 #define CPBLK_UNROLL_LIMIT 64 // Upper bound to let the code generator to loop unroll CpBlk. #define INITBLK_UNROLL_LIMIT 64 // Upper bound to let the code generator to loop unroll InitBlk. #ifdef FEATURE_SIMD #define ALIGN_SIMD_TYPES 1 // whether SIMD type locals are to be aligned #define FEATURE_PARTIAL_SIMD_CALLEE_SAVE 1 // Whether SIMD registers are partially saved at calls #endif // FEATURE_SIMD #define FEATURE_WRITE_BARRIER 1 // Generate the proper WriteBarrier calls for GC #define FEATURE_FIXED_OUT_ARGS 1 // Preallocate the outgoing arg area in the prolog #define FEATURE_STRUCTPROMOTE 1 // JIT Optimization to promote fields of structs into registers #define FEATURE_MULTIREG_STRUCT_PROMOTE 1 // True when we want to promote fields of a multireg struct into registers #define FEATURE_FASTTAILCALL 1 // Tail calls made as epilog+jmp #define FEATURE_TAILCALL_OPT 1 // opportunistic Tail calls (i.e. without ".tail" prefix) made as fast tail calls. #define FEATURE_SET_FLAGS 0 // Set to true to force the JIT to mark the trees with GTF_SET_FLAGS when the flags need to be set #define FEATURE_MULTIREG_ARGS_OR_RET 1 // Support for passing and/or returning single values in more than one register #define FEATURE_MULTIREG_ARGS 1 // Support for passing a single argument in more than one register #define FEATURE_MULTIREG_RET 1 // Support for returning a single value in more than one register #define FEATURE_STRUCT_CLASSIFIER 0 // Uses a classifier function to determine is structs are passed/returned in more than one register #define MAX_PASS_MULTIREG_BYTES 32 // Maximum size of a struct that could be passed in more than one register (max is 4 doubles using an HFA) #define MAX_RET_MULTIREG_BYTES 32 // Maximum size of a struct that could be returned in more than one register (Max is an HFA of 4 doubles) #define MAX_ARG_REG_COUNT 4 // Maximum registers used to pass a single argument in multiple registers. (max is 4 floats or doubles using an HFA) #define MAX_RET_REG_COUNT 4 // Maximum registers used to return a value. #ifdef FEATURE_USE_ASM_GC_WRITE_BARRIERS #define NOGC_WRITE_BARRIERS 1 // We have specialized WriteBarrier JIT Helpers that DO-NOT trash the RBM_CALLEE_TRASH registers #else #define NOGC_WRITE_BARRIERS 0 // Do not modify this -- modify the definition above. (If we're not using ASM barriers we definitely don't have NOGC barriers). #endif #define USER_ARGS_COME_LAST 1 #define EMIT_TRACK_STACK_DEPTH 1 // This is something of a workaround. For both ARM and AMD64, the frame size is fixed, so we don't really // need to track stack depth, but this is currently necessary to get GC information reported at call sites. #define TARGET_POINTER_SIZE 8 // equal to sizeof(void*) and the managed pointer size in bytes for this target #define FEATURE_EH 1 // To aid platform bring-up, eliminate exceptional EH clauses (catch, filter, filter-handler, fault) and directly execute 'finally' clauses. #define FEATURE_EH_FUNCLETS 1 #define FEATURE_EH_CALLFINALLY_THUNKS 1 // Generate call-to-finally code in "thunks" in the enclosing EH region, protected by "cloned finally" clauses. #define FEATURE_STACK_FP_X87 0 #define ETW_EBP_FRAMED 1 // if 1 we cannot use REG_FP as a scratch register and must setup the frame pointer for most methods #define FEATURE_FP_REGALLOC 0 // Enabled if RegAlloc is used to enregister Floating Point LclVars #define CSE_CONSTS 1 // Enable if we want to CSE constants #define REG_FP_FIRST REG_V0 #define REG_FP_LAST REG_V31 #define FIRST_FP_ARGREG REG_V0 #define LAST_FP_ARGREG REG_V15 #define REGNUM_BITS 6 // number of bits in a REG_* #define TINY_REGNUM_BITS 5 // number of bits we will use for a tiny instr desc (may not use float) #define REGMASK_BITS 64 // number of bits in a REGNUM_MASK #define REGSIZE_BYTES 8 // number of bytes in one general purpose register #define FP_REGSIZE_BYTES 16 // number of bytes in one FP/SIMD register #define FPSAVE_REGSIZE_BYTES 8 // number of bytes in one FP/SIMD register that are saved/restored, for callee-saved registers #define MIN_ARG_AREA_FOR_CALL 0 // Minimum required outgoing argument space for a call. #define CODE_ALIGN 4 // code alignment requirement #define STACK_ALIGN 16 // stack alignment requirement #define STACK_ALIGN_SHIFT 3 // Shift-right amount to convert stack size in bytes to size in DWORD_PTRs #define RBM_INT_CALLEE_SAVED (RBM_R19|RBM_R20|RBM_R21|RBM_R22|RBM_R23|RBM_R24|RBM_R25|RBM_R26|RBM_R27|RBM_R28) #define RBM_INT_CALLEE_TRASH (RBM_R0|RBM_R1|RBM_R2|RBM_R3|RBM_R4|RBM_R5|RBM_R6|RBM_R7|RBM_R8|RBM_R9|RBM_R10|RBM_R11|RBM_R12|RBM_R13|RBM_R14|RBM_R15|RBM_IP0|RBM_IP1|RBM_LR) #define RBM_FLT_CALLEE_SAVED (RBM_V8|RBM_V9|RBM_V10|RBM_V11|RBM_V12|RBM_V13|RBM_V14|RBM_V15) #define RBM_FLT_CALLEE_TRASH (RBM_V0|RBM_V1|RBM_V2|RBM_V3|RBM_V4|RBM_V5|RBM_V6|RBM_V7|RBM_V16|RBM_V17|RBM_V18|RBM_V19|RBM_V20|RBM_V21|RBM_V22|RBM_V23|RBM_V24|RBM_V25|RBM_V26|RBM_V27|RBM_V28|RBM_V29|RBM_V30|RBM_V31) #define RBM_CALLEE_SAVED (RBM_INT_CALLEE_SAVED | RBM_FLT_CALLEE_SAVED) #define RBM_CALLEE_TRASH (RBM_INT_CALLEE_TRASH | RBM_FLT_CALLEE_TRASH) #define RBM_CALLEE_TRASH_NOGC (RBM_R12|RBM_R13|RBM_R14|RBM_R15|RBM_IP1) #define REG_DEFAULT_HELPER_CALL_TARGET REG_R12 #define REG_FASTTAILCALL_TARGET REG_IP0 // Target register for fast tail call #define RBM_FASTTAILCALL_TARGET RBM_IP0 #define RBM_ALLINT (RBM_INT_CALLEE_SAVED | RBM_INT_CALLEE_TRASH) #define RBM_ALLFLOAT (RBM_FLT_CALLEE_SAVED | RBM_FLT_CALLEE_TRASH) #define RBM_ALLDOUBLE RBM_ALLFLOAT #define REG_VAR_ORDER REG_R9,REG_R10,REG_R11,REG_R12,REG_R13,REG_R14,REG_R15,\ REG_R8,REG_R7,REG_R6,REG_R5,REG_R4,REG_R3,REG_R2,REG_R1,REG_R0,\ REG_R19,REG_R20,REG_R21,REG_R22,REG_R23,REG_R24,REG_R25,REG_R26,REG_R27,REG_R28,\ #define REG_VAR_ORDER_FLT REG_V16, REG_V17, REG_V18, REG_V19, \ REG_V20, REG_V21, REG_V22, REG_V23, \ REG_V24, REG_V25, REG_V26, REG_V27, \ REG_V28, REG_V29, REG_V30, REG_V31, \ REG_V7, REG_V6, REG_V5, REG_V4, \ REG_V8, REG_V9, REG_V10, REG_V11, \ REG_V12, REG_V13, REG_V14, REG_V15, \ REG_V3, REG_V2, REG_V1, REG_V0 #define REG_CALLEE_SAVED_ORDER REG_R19,REG_R20,REG_R21,REG_R22,REG_R23,REG_R24,REG_R25,REG_R26,REG_R27,REG_R28 #define RBM_CALLEE_SAVED_ORDER RBM_R19,RBM_R20,RBM_R21,RBM_R22,RBM_R23,RBM_R24,RBM_R25,RBM_R26,RBM_R27,RBM_R28 #define CNT_CALLEE_SAVED (11) #define CNT_CALLEE_TRASH (17) #define CNT_CALLEE_ENREG (CNT_CALLEE_SAVED-1) #define CNT_CALLEE_SAVED_FLOAT (8) #define CNT_CALLEE_TRASH_FLOAT (24) #define CALLEE_SAVED_REG_MAXSZ (CNT_CALLEE_SAVED * REGSIZE_BYTES) #define CALLEE_SAVED_FLOAT_MAXSZ (CNT_CALLEE_SAVED_FLOAT * FPSAVE_REGSIZE_BYTES) // TODO-ARM64-Cleanup: Remove this #define REG_L_STK REG_ZR // This is the first register in REG_TMP_ORDER #define REG_TMP_0 REG_R9 #define RBM_TMP_0 RBM_R9 // This is the second register in REG_TMP_ORDER #define REG_TMP_1 REG_R10 #define RBM_TMP_1 RBM_R10 // register to hold shift amount; no special register is required on ARM64. #define REG_SHIFT REG_NA #define RBM_SHIFT RBM_ALLINT #define PREDICT_REG_SHIFT PREDICT_REG // This is a general scratch register that does not conflict with the argument registers #define REG_SCRATCH REG_R9 #define RBM_SCRATCH RBM_R9 // This is a general register that can be optionally reserved for other purposes during codegen #define REG_OPT_RSVD REG_IP1 #define RBM_OPT_RSVD RBM_IP1 // Where is the exception object on entry to the handler block? #define REG_EXCEPTION_OBJECT REG_R0 #define RBM_EXCEPTION_OBJECT RBM_R0 #define REG_JUMP_THUNK_PARAM REG_R12 #define RBM_JUMP_THUNK_PARAM RBM_R12 #if NOGC_WRITE_BARRIERS #define REG_WRITE_BARRIER_SRC_BYREF REG_R13 #define RBM_WRITE_BARRIER_SRC_BYREF RBM_R13 #define REG_WRITE_BARRIER_DST_BYREF REG_R14 #define RBM_WRITE_BARRIER_DST_BYREF RBM_R14 #define REG_WRITE_BARRIER REG_R15 #define RBM_WRITE_BARRIER RBM_R15 #endif // GenericPInvokeCalliHelper VASigCookie Parameter #define REG_PINVOKE_COOKIE_PARAM REG_R15 #define RBM_PINVOKE_COOKIE_PARAM RBM_R15 #define PREDICT_REG_PINVOKE_COOKIE_PARAM PREDICT_REG_R15 // GenericPInvokeCalliHelper unmanaged target Parameter #define REG_PINVOKE_TARGET_PARAM REG_R14 #define RBM_PINVOKE_TARGET_PARAM RBM_R14 #define PREDICT_REG_PINVOKE_TARGET_PARAM PREDICT_REG_R14 // IL stub's secret MethodDesc parameter (JitFlags::JIT_FLAG_PUBLISH_SECRET_PARAM) #define REG_SECRET_STUB_PARAM REG_R12 #define RBM_SECRET_STUB_PARAM RBM_R12 // R2R indirect call. Use the same registers as VSD #define REG_R2R_INDIRECT_PARAM REG_R11 #define RBM_R2R_INDIRECT_PARAM RBM_R11 // Registers used by PInvoke frame setup #define REG_PINVOKE_FRAME REG_R9 #define RBM_PINVOKE_FRAME RBM_R9 #define REG_PINVOKE_TCB REG_R10 #define RBM_PINVOKE_TCB RBM_R10 #define REG_PINVOKE_SCRATCH REG_R10 #define RBM_PINVOKE_SCRATCH RBM_R10 // The following defines are useful for iterating a regNumber #define REG_FIRST REG_R0 #define REG_INT_FIRST REG_R0 #define REG_INT_LAST REG_ZR #define REG_INT_COUNT (REG_INT_LAST - REG_INT_FIRST + 1) #define REG_NEXT(reg) ((regNumber)((unsigned)(reg) + 1)) #define REG_PREV(reg) ((regNumber)((unsigned)(reg) - 1)) // genCodeForCall() moves the target address of the tailcall into this register, before pushing it on the stack #define REG_TAILCALL_ADDR REG_R9 // The following registers are used in emitting Enter/Leave/Tailcall profiler callbacks #define REG_PROFILER_ENTER_ARG REG_R0 #define RBM_PROFILER_ENTER_ARG RBM_R0 #define REG_PROFILER_RET_SCRATCH REG_R2 #define RBM_PROFILER_RET_SCRATCH RBM_R2 #define RBM_PROFILER_RET_USED (RBM_R0 | RBM_R1 | RBM_R2) #define REG_PROFILER_JMP_ARG REG_R0 #define RBM_PROFILER_JMP_USED RBM_R0 #define RBM_PROFILER_TAIL_USED (RBM_R0 | RBM_R12 | RBM_LR) // Which register are int and long values returned in ? #define REG_INTRET REG_R0 #define RBM_INTRET RBM_R0 #define REG_LNGRET REG_R0 #define RBM_LNGRET RBM_R0 // second return register for 16-byte structs #define REG_INTRET_1 REG_R1 #define RBM_INTRET_1 RBM_R1 #define REG_FLOATRET REG_V0 #define RBM_FLOATRET RBM_V0 #define RBM_DOUBLERET RBM_V0 // The registers trashed by the CORINFO_HELP_STOP_FOR_GC helper #define RBM_STOP_FOR_GC_TRASH RBM_CALLEE_TRASH // The registers trashed by the CORINFO_HELP_INIT_PINVOKE_FRAME helper. #define RBM_INIT_PINVOKE_FRAME_TRASH RBM_CALLEE_TRASH #define REG_FPBASE REG_FP #define RBM_FPBASE RBM_FP #define STR_FPBASE "fp" #define REG_SPBASE REG_SP #define RBM_SPBASE RBM_ZR // reuse the RBM for REG_ZR #define STR_SPBASE "sp" #define FIRST_ARG_STACK_OFFS (2*REGSIZE_BYTES) // Caller's saved FP and return address // On ARM64 the calling convention defines REG_R8 (x8) as an additional argument register // It isn't allocated for the normal user arguments, so it isn't counted by MAX_REG_ARG // whether we use this register to pass the RetBuff is controlled by the function hasFixedRetBuffReg() // it is consider to be the next integer argnum, which is 8 // #define REG_ARG_RET_BUFF REG_R8 #define RBM_ARG_RET_BUFF RBM_R8 #define RET_BUFF_ARGNUM 8 #define MAX_REG_ARG 8 #define MAX_FLOAT_REG_ARG 8 #define REG_ARG_FIRST REG_R0 #define REG_ARG_LAST REG_R7 #define REG_ARG_FP_FIRST REG_V0 #define REG_ARG_FP_LAST REG_V7 #define INIT_ARG_STACK_SLOT 0 // No outgoing reserved stack slots #define REG_ARG_0 REG_R0 #define REG_ARG_1 REG_R1 #define REG_ARG_2 REG_R2 #define REG_ARG_3 REG_R3 #define REG_ARG_4 REG_R4 #define REG_ARG_5 REG_R5 #define REG_ARG_6 REG_R6 #define REG_ARG_7 REG_R7 SELECTANY const regNumber intArgRegs [] = {REG_R0, REG_R1, REG_R2, REG_R3, REG_R4, REG_R5, REG_R6, REG_R7}; SELECTANY const regMaskTP intArgMasks[] = {RBM_R0, RBM_R1, RBM_R2, RBM_R3, RBM_R4, RBM_R5, RBM_R6, RBM_R7}; #define RBM_ARG_0 RBM_R0 #define RBM_ARG_1 RBM_R1 #define RBM_ARG_2 RBM_R2 #define RBM_ARG_3 RBM_R3 #define RBM_ARG_4 RBM_R4 #define RBM_ARG_5 RBM_R5 #define RBM_ARG_6 RBM_R6 #define RBM_ARG_7 RBM_R7 #define REG_FLTARG_0 REG_V0 #define REG_FLTARG_1 REG_V1 #define REG_FLTARG_2 REG_V2 #define REG_FLTARG_3 REG_V3 #define REG_FLTARG_4 REG_V4 #define REG_FLTARG_5 REG_V5 #define REG_FLTARG_6 REG_V6 #define REG_FLTARG_7 REG_V7 #define RBM_FLTARG_0 RBM_V0 #define RBM_FLTARG_1 RBM_V1 #define RBM_FLTARG_2 RBM_V2 #define RBM_FLTARG_3 RBM_V3 #define RBM_FLTARG_4 RBM_V4 #define RBM_FLTARG_5 RBM_V5 #define RBM_FLTARG_6 RBM_V6 #define RBM_FLTARG_7 RBM_V7 #define RBM_ARG_REGS (RBM_ARG_0|RBM_ARG_1|RBM_ARG_2|RBM_ARG_3|RBM_ARG_4|RBM_ARG_5|RBM_ARG_6|RBM_ARG_7) #define RBM_FLTARG_REGS (RBM_FLTARG_0|RBM_FLTARG_1|RBM_FLTARG_2|RBM_FLTARG_3|RBM_FLTARG_4|RBM_FLTARG_5|RBM_FLTARG_6|RBM_FLTARG_7) SELECTANY const regNumber fltArgRegs [] = {REG_V0, REG_V1, REG_V2, REG_V3, REG_V4, REG_V5, REG_V6, REG_V7 }; SELECTANY const regMaskTP fltArgMasks[] = {RBM_V0, RBM_V1, RBM_V2, RBM_V3, RBM_V4, RBM_V5, RBM_V6, RBM_V7 }; #define LBL_DIST_SMALL_MAX_NEG (-1048576) #define LBL_DIST_SMALL_MAX_POS (+1048575) #define LBL_SIZE_SMALL (4) #define LBL_SIZE_LARGE (8) #define JCC_DIST_SMALL_MAX_NEG (-1048576) #define JCC_DIST_SMALL_MAX_POS (+1048575) #define TB_DIST_SMALL_MAX_NEG (-32768) #define TB_DIST_SMALL_MAX_POS (+32767) #define JCC_SIZE_SMALL (4) #define JCC_SIZE_LARGE (8) #define LDC_DIST_SMALL_MAX_NEG (-1048576) #define LDC_DIST_SMALL_MAX_POS (+1048575) #define LDC_SIZE_SMALL (4) #define LDC_SIZE_LARGE (8) #define JMP_SIZE_SMALL (4) #else #error Unsupported or unset target architecture #endif #ifdef _TARGET_XARCH_ #define JMP_DIST_SMALL_MAX_NEG (-128) #define JMP_DIST_SMALL_MAX_POS (+127) #define JCC_DIST_SMALL_MAX_NEG (-128) #define JCC_DIST_SMALL_MAX_POS (+127) #define JMP_SIZE_SMALL (2) #define JMP_SIZE_LARGE (5) #define JCC_SIZE_SMALL (2) #define JCC_SIZE_LARGE (6) #define PUSH_INST_SIZE (5) #define CALL_INST_SIZE (5) #endif // _TARGET_XARCH_ C_ASSERT(REG_FIRST == 0); C_ASSERT(REG_INT_FIRST < REG_INT_LAST); C_ASSERT(REG_FP_FIRST < REG_FP_LAST); // Opportunistic tail call feature converts non-tail prefixed calls into // tail calls where possible. It requires fast tail calling mechanism for // performance. Otherwise, we are better off not converting non-tail prefixed // calls into tail calls. C_ASSERT((FEATURE_TAILCALL_OPT == 0) || (FEATURE_FASTTAILCALL == 1)); /*****************************************************************************/ #define BITS_PER_BYTE 8 #define REGNUM_MASK ((1 << REGNUM_BITS) - 1) // a n-bit mask use to encode multiple REGNUMs into a unsigned int #define RBM_ALL(type) (varTypeIsFloating(type) ? RBM_ALLFLOAT : RBM_ALLINT) /*****************************************************************************/ #if CPU_HAS_BYTE_REGS #define RBM_BYTE_REGS (RBM_EAX|RBM_ECX|RBM_EDX|RBM_EBX) #define RBM_NON_BYTE_REGS (RBM_ESI|RBM_EDI) // We reuse the ESP register as a flag for byteable registers in lvPrefReg #define RBM_BYTE_REG_FLAG RBM_ESP #else #define RBM_BYTE_REGS RBM_ALLINT #define RBM_NON_BYTE_REGS RBM_NONE #define RBM_BYTE_REG_FLAG RBM_NONE #endif // clang-format on /*****************************************************************************/ class Target { public: static const char* g_tgtCPUName; static const char* g_tgtPlatformName; enum ArgOrder { ARG_ORDER_R2L, ARG_ORDER_L2R }; static const enum ArgOrder g_tgtArgOrder; #if NOGC_WRITE_BARRIERS static regMaskTP exclude_WriteBarrierReg(regMaskTP mask) { unsigned result = (mask & ~RBM_WRITE_BARRIER); if (result) return result; else return RBM_ALLINT & ~RBM_WRITE_BARRIER; } #endif // NOGC_WRITE_BARRIERS }; #if defined(DEBUG) || defined(LATE_DISASM) const char* getRegName(unsigned reg, bool isFloat = false); // this is for gcencode.cpp and disasm.cpp that don't use // the regNumber type const char* getRegName(regNumber reg, bool isFloat = false); #endif // defined(DEBUG) || defined(LATE_DISASM) #ifdef DEBUG const char* getRegNameFloat(regNumber reg, var_types type); extern void dspRegMask(regMaskTP regMask, size_t minSiz = 0); #endif #if CPU_HAS_BYTE_REGS inline BOOL isByteReg(regNumber reg) { return (reg <= REG_EBX); } #else inline BOOL isByteReg(regNumber reg) { return true; } #endif #ifdef LEGACY_BACKEND extern const regNumber raRegTmpOrder[REG_TMP_ORDER_COUNT]; extern const regNumber rpRegTmpOrder[REG_TMP_ORDER_COUNT]; #if FEATURE_FP_REGALLOC extern const regNumber raRegFltTmpOrder[REG_FLT_TMP_ORDER_COUNT]; #endif #endif // LEGACY_BACKEND inline regMaskTP genRegMask(regNumber reg); inline regMaskTP genRegMaskFloat(regNumber reg, var_types type = TYP_DOUBLE); /***************************************************************************** * Return true if the register number is valid */ inline bool genIsValidReg(regNumber reg) { /* It's safest to perform an unsigned comparison in case reg is negative */ return ((unsigned)reg < (unsigned)REG_COUNT); } /***************************************************************************** * Return true if the register is a valid integer register */ inline bool genIsValidIntReg(regNumber reg) { return reg >= REG_INT_FIRST && reg <= REG_INT_LAST; } /***************************************************************************** * Return true if the register is a valid floating point register */ inline bool genIsValidFloatReg(regNumber reg) { return reg >= REG_FP_FIRST && reg <= REG_FP_LAST; } #ifdef _TARGET_ARM_ /***************************************************************************** * Return true if the register is a valid floating point double register */ inline bool genIsValidDoubleReg(regNumber reg) { return genIsValidFloatReg(reg) && (((reg - REG_FP_FIRST) & 0x1) == 0); } #endif // _TARGET_ARM_ //------------------------------------------------------------------------------------------- // hasFixedRetBuffReg: // Returns true if our target architecture uses a fixed return buffer register // inline bool hasFixedRetBuffReg() { #ifdef _TARGET_ARM64_ return true; #else return false; #endif } //------------------------------------------------------------------------------------------- // theFixedRetBuffReg: // Returns the regNumber to use for the fixed return buffer // inline regNumber theFixedRetBuffReg() { assert(hasFixedRetBuffReg()); // This predicate should be checked before calling this method #ifdef _TARGET_ARM64_ return REG_ARG_RET_BUFF; #else return REG_NA; #endif } //------------------------------------------------------------------------------------------- // theFixedRetBuffMask: // Returns the regNumber to use for the fixed return buffer // inline regMaskTP theFixedRetBuffMask() { assert(hasFixedRetBuffReg()); // This predicate should be checked before calling this method #ifdef _TARGET_ARM64_ return RBM_ARG_RET_BUFF; #else return 0; #endif } //------------------------------------------------------------------------------------------- // theFixedRetBuffArgNum: // Returns the argNum to use for the fixed return buffer // inline unsigned theFixedRetBuffArgNum() { assert(hasFixedRetBuffReg()); // This predicate should be checked before calling this method #ifdef _TARGET_ARM64_ return RET_BUFF_ARGNUM; #else return BAD_VAR_NUM; #endif } //------------------------------------------------------------------------------------------- // fullIntArgRegMask: // Returns the full mask of all possible integer registers // Note this includes the fixed return buffer register on Arm64 // inline regMaskTP fullIntArgRegMask() { if (hasFixedRetBuffReg()) { return RBM_ARG_REGS | theFixedRetBuffMask(); } else { return RBM_ARG_REGS; } } //------------------------------------------------------------------------------------------- // isValidIntArgReg: // Returns true if the register is a valid integer argument register // Note this method also returns true on Arm64 when 'reg' is the RetBuff register // inline bool isValidIntArgReg(regNumber reg) { return (genRegMask(reg) & fullIntArgRegMask()) != 0; } //------------------------------------------------------------------------------------------- // genRegArgNext: // Given a register that is an integer or floating point argument register // returns the next argument register // regNumber genRegArgNext(regNumber argReg); //------------------------------------------------------------------------------------------- // isValidFloatArgReg: // Returns true if the register is a valid floating-point argument register // inline bool isValidFloatArgReg(regNumber reg) { if (reg == REG_NA) { return false; } else { return (reg >= FIRST_FP_ARGREG) && (reg <= LAST_FP_ARGREG); } } /***************************************************************************** * * Can the register hold the argument type? */ #ifdef _TARGET_ARM_ inline bool floatRegCanHoldType(regNumber reg, var_types type) { assert(genIsValidFloatReg(reg)); if (type == TYP_DOUBLE) { return ((reg - REG_F0) % 2) == 0; } else { // Can be TYP_STRUCT for HFA. It's not clear that's correct; what about // HFA of double? We wouldn't be asserting the right alignment, and // callers like genRegMaskFloat() wouldn't be generating the right mask. assert((type == TYP_FLOAT) || (type == TYP_STRUCT)); return true; } } #else // AMD64: xmm registers can hold any float type // x86: FP stack can hold any float type // ARM64: Floating-point/SIMD registers can hold any type. inline bool floatRegCanHoldType(regNumber reg, var_types type) { return true; } #endif /***************************************************************************** * * Map a register number to a register mask. */ extern const regMaskSmall regMasks[REG_COUNT]; inline regMaskTP genRegMask(regNumber reg) { assert((unsigned)reg < ArrLen(regMasks)); #ifdef _TARGET_AMD64_ // shift is faster than a L1 hit on modern x86 // (L1 latency on sandy bridge is 4 cycles for [base] and 5 for [base + index*c] ) // the reason this is AMD-only is because the x86 BE will try to get reg masks for REG_STK // and the result needs to be zero. regMaskTP result = 1 << reg; assert(result == regMasks[reg]); return result; #else return regMasks[reg]; #endif } /***************************************************************************** * * Map a register number to a floating-point register mask. */ #if defined(_TARGET_X86_) && defined(LEGACY_BACKEND) extern const regMaskSmall regFPMasks[REG_FPCOUNT]; #endif // defined(_TARGET_X86_) && defined(LEGACY_BACKEND) inline regMaskTP genRegMaskFloat(regNumber reg, var_types type /* = TYP_DOUBLE */) { #if defined(_TARGET_X86_) && defined(LEGACY_BACKEND) assert(reg >= REG_FPV0 && reg < REG_FPCOUNT); assert((unsigned)reg < ArrLen(regFPMasks)); return regFPMasks[reg]; #elif defined(_TARGET_AMD64_) || defined(_TARGET_ARM64_) || defined(_TARGET_X86_) assert(genIsValidFloatReg(reg)); assert((unsigned)reg < ArrLen(regMasks)); return regMasks[reg]; #elif defined _TARGET_ARM_ assert(floatRegCanHoldType(reg, type)); assert(reg >= REG_F0 && reg <= REG_F31); if (type == TYP_DOUBLE) { return regMasks[reg] | regMasks[reg + 1]; } else { return regMasks[reg]; } #else #error Unsupported or unset target architecture #endif } //------------------------------------------------------------------------ // genRegMask: Given a register, and its type, generate the appropriate regMask // // Arguments: // regNum - the register of interest // type - the type of regNum (i.e. the type it is being used as) // // Return Value: // This will usually return the same value as genRegMask(regNum), but // on architectures where multiple registers are used for certain types // (e.g. TYP_DOUBLE on ARM), it will return a regMask that includes // all the registers. // Registers that are used in pairs, but separately named (e.g. TYP_LONG // on ARM) will return just the regMask for the given register. // // Assumptions: // For registers that are used in pairs, the caller will be handling // each member of the pair separately. // inline regMaskTP genRegMask(regNumber regNum, var_types type) { #ifndef _TARGET_ARM_ return genRegMask(regNum); #else regMaskTP regMask = RBM_NONE; if (varTypeIsFloating(type)) { regMask = genRegMaskFloat(regNum, type); } else { regMask = genRegMask(regNum); } return regMask; #endif } /***************************************************************************** * * These arrays list the callee-saved register numbers (and bitmaps, respectively) for * the current architecture. */ extern const regNumber raRegCalleeSaveOrder[CNT_CALLEE_SAVED]; extern const regMaskTP raRbmCalleeSaveOrder[CNT_CALLEE_SAVED]; // This method takes a "compact" bitset of the callee-saved registers, and "expands" it to a full register mask. regMaskSmall genRegMaskFromCalleeSavedMask(unsigned short); /***************************************************************************** * * Returns the register that holds the low 32 bits of the long value given * by the register pair 'regPair'. */ inline regNumber genRegPairLo(regPairNo regPair) { assert(regPair >= REG_PAIR_FIRST && regPair <= REG_PAIR_LAST); return (regNumber)((regPair - REG_PAIR_FIRST) & REG_PAIR_NMASK); } /***************************************************************************** * * Returns the register that holds the high 32 bits of the long value given * by the register pair 'regPair'. */ inline regNumber genRegPairHi(regPairNo regPair) { assert(regPair >= REG_PAIR_FIRST && regPair <= REG_PAIR_LAST); return (regNumber)(((regPair - REG_PAIR_FIRST) >> REG_PAIR_NBITS) & REG_PAIR_NMASK); } /***************************************************************************** * * Returns whether regPair is a combination of two "real" registers * or whether it contains a pseudo register. * * In debug it also asserts that reg1 and reg2 are not the same. */ bool genIsProperRegPair(regPairNo regPair); /***************************************************************************** * * Returns the register pair number that corresponds to the given two regs. */ inline regPairNo gen2regs2pair(regNumber regLo, regNumber regHi) { assert(regLo != regHi || regLo == REG_STK); assert(genIsValidReg(regLo) && genIsValidReg(regHi)); assert(regLo != REG_L_STK && regHi != REG_L_STK); regPairNo regPair = (regPairNo)(regLo + (regHi << REG_PAIR_NBITS) + REG_PAIR_FIRST); assert(regLo == genRegPairLo(regPair)); assert(regHi == genRegPairHi(regPair)); return regPair; } /*****************************************************************************/ inline regMaskTP genRegPairMask(regPairNo regPair) { assert(regPair >= REG_PAIR_FIRST && regPair <= REG_PAIR_LAST); return genRegMask(genRegPairLo(regPair)) | genRegMask(genRegPairHi(regPair)); } /***************************************************************************** * * Assumes that "reg" is of the given "type". Return the next unused reg number after "reg" * of this type, else REG_NA if there are no more. */ inline regNumber regNextOfType(regNumber reg, var_types type) { regNumber regReturn; #ifdef _TARGET_ARM_ if (type == TYP_DOUBLE) { // Skip odd FP registers for double-precision types assert(floatRegCanHoldType(reg, type)); regReturn = regNumber(reg + 2); } else { regReturn = REG_NEXT(reg); } #else // _TARGET_ARM_ regReturn = REG_NEXT(reg); #endif if (varTypeIsFloating(type)) { if (regReturn > REG_FP_LAST) { regReturn = REG_NA; } } else { if (regReturn > REG_INT_LAST) { regReturn = REG_NA; } } return regReturn; } /***************************************************************************** * * Type checks */ inline bool isRegPairType(int /* s/b "var_types" */ type) { #if !CPU_LONG_USES_REGPAIR return false; #else #ifdef _TARGET_64BIT_ return false; #elif CPU_HAS_FP_SUPPORT return type == TYP_LONG; #else return type == TYP_LONG || type == TYP_DOUBLE; #endif #endif // CPU_LONG_USES_REGPAIR } inline bool isFloatRegType(int /* s/b "var_types" */ type) { #if CPU_HAS_FP_SUPPORT return type == TYP_DOUBLE || type == TYP_FLOAT; #else return false; #endif } // If the WINDOWS_AMD64_ABI is defined make sure that _TARGET_AMD64_ is also defined. #if defined(WINDOWS_AMD64_ABI) #if !defined(_TARGET_AMD64_) #error When WINDOWS_AMD64_ABI is defined you must define _TARGET_AMD64_ defined as well. #endif #endif /*****************************************************************************/ // Some sanity checks on some of the register masks // Stack pointer is never part of RBM_ALLINT C_ASSERT((RBM_ALLINT & RBM_SPBASE) == RBM_NONE); C_ASSERT((RBM_INT_CALLEE_SAVED & RBM_SPBASE) == RBM_NONE); #if ETW_EBP_FRAMED // Frame pointer isn't either if we're supporting ETW frame chaining C_ASSERT((RBM_ALLINT & RBM_FPBASE) == RBM_NONE); C_ASSERT((RBM_INT_CALLEE_SAVED & RBM_FPBASE) == RBM_NONE); #endif /*****************************************************************************/ /*****************************************************************************/ #endif // _TARGET_H_ /*****************************************************************************/