diff options
Diffstat (limited to 'libs/luajit-cmake/luajit/src/lj_target_x86.h')
| -rw-r--r-- | libs/luajit-cmake/luajit/src/lj_target_x86.h | 357 |
1 files changed, 357 insertions, 0 deletions
diff --git a/libs/luajit-cmake/luajit/src/lj_target_x86.h b/libs/luajit-cmake/luajit/src/lj_target_x86.h new file mode 100644 index 0000000..69cb8ca --- /dev/null +++ b/libs/luajit-cmake/luajit/src/lj_target_x86.h @@ -0,0 +1,357 @@ +/* +** Definitions for x86 and x64 CPUs. +** Copyright (C) 2005-2022 Mike Pall. See Copyright Notice in luajit.h +*/ + +#ifndef _LJ_TARGET_X86_H +#define _LJ_TARGET_X86_H + +/* -- Registers IDs ------------------------------------------------------- */ + +#if LJ_64 +#define GPRDEF(_) \ + _(EAX) _(ECX) _(EDX) _(EBX) _(ESP) _(EBP) _(ESI) _(EDI) \ + _(R8D) _(R9D) _(R10D) _(R11D) _(R12D) _(R13D) _(R14D) _(R15D) +#define FPRDEF(_) \ + _(XMM0) _(XMM1) _(XMM2) _(XMM3) _(XMM4) _(XMM5) _(XMM6) _(XMM7) \ + _(XMM8) _(XMM9) _(XMM10) _(XMM11) _(XMM12) _(XMM13) _(XMM14) _(XMM15) +#else +#define GPRDEF(_) \ + _(EAX) _(ECX) _(EDX) _(EBX) _(ESP) _(EBP) _(ESI) _(EDI) +#define FPRDEF(_) \ + _(XMM0) _(XMM1) _(XMM2) _(XMM3) _(XMM4) _(XMM5) _(XMM6) _(XMM7) +#endif +#define VRIDDEF(_) \ + _(MRM) _(RIP) + +#define RIDENUM(name) RID_##name, + +enum { + GPRDEF(RIDENUM) /* General-purpose registers (GPRs). */ + FPRDEF(RIDENUM) /* Floating-point registers (FPRs). */ + RID_MAX, + RID_MRM = RID_MAX, /* Pseudo-id for ModRM operand. */ + RID_RIP = RID_MAX+5, /* Pseudo-id for RIP (x64 only), rm bits = 5. */ + + /* Calling conventions. */ + RID_SP = RID_ESP, + RID_RET = RID_EAX, +#if LJ_64 + RID_FPRET = RID_XMM0, +#endif + RID_RETLO = RID_EAX, + RID_RETHI = RID_EDX, + + /* These definitions must match with the *.dasc file(s): */ + RID_BASE = RID_EDX, /* Interpreter BASE. */ +#if LJ_64 && !LJ_ABI_WIN + RID_LPC = RID_EBX, /* Interpreter PC. */ + RID_DISPATCH = RID_R14D, /* Interpreter DISPATCH table. */ +#else + RID_LPC = RID_ESI, /* Interpreter PC. */ + RID_DISPATCH = RID_EBX, /* Interpreter DISPATCH table. */ +#endif + + /* Register ranges [min, max) and number of registers. */ + RID_MIN_GPR = RID_EAX, + RID_MIN_FPR = RID_XMM0, + RID_MAX_GPR = RID_MIN_FPR, + RID_MAX_FPR = RID_MAX, + RID_NUM_GPR = RID_MAX_GPR - RID_MIN_GPR, + RID_NUM_FPR = RID_MAX_FPR - RID_MIN_FPR, +}; + +/* -- Register sets ------------------------------------------------------- */ + +/* Make use of all registers, except the stack pointer (and maybe DISPATCH). */ +#define RSET_GPR (RSET_RANGE(RID_MIN_GPR, RID_MAX_GPR) \ + - RID2RSET(RID_ESP) \ + - LJ_GC64*RID2RSET(RID_DISPATCH)) +#define RSET_FPR (RSET_RANGE(RID_MIN_FPR, RID_MAX_FPR)) +#define RSET_ALL (RSET_GPR|RSET_FPR) +#define RSET_INIT RSET_ALL + +#if LJ_64 +/* Note: this requires the use of FORCE_REX! */ +#define RSET_GPR8 RSET_GPR +#else +#define RSET_GPR8 (RSET_RANGE(RID_EAX, RID_EBX+1)) +#endif + +/* ABI-specific register sets. */ +#define RSET_ACD (RID2RSET(RID_EAX)|RID2RSET(RID_ECX)|RID2RSET(RID_EDX)) +#if LJ_64 +#if LJ_ABI_WIN +/* Windows x64 ABI. */ +#define RSET_SCRATCH \ + (RSET_ACD|RSET_RANGE(RID_R8D, RID_R11D+1)|RSET_RANGE(RID_XMM0, RID_XMM5+1)) +#define REGARG_GPRS \ + (RID_ECX|((RID_EDX|((RID_R8D|(RID_R9D<<5))<<5))<<5)) +#define REGARG_NUMGPR 4 +#define REGARG_NUMFPR 4 +#define REGARG_FIRSTFPR RID_XMM0 +#define REGARG_LASTFPR RID_XMM3 +#define STACKARG_OFS (4*8) +#else +/* The rest of the civilized x64 world has a common ABI. */ +#define RSET_SCRATCH \ + (RSET_ACD|RSET_RANGE(RID_ESI, RID_R11D+1)|RSET_FPR) +#define REGARG_GPRS \ + (RID_EDI|((RID_ESI|((RID_EDX|((RID_ECX|((RID_R8D|(RID_R9D \ + <<5))<<5))<<5))<<5))<<5)) +#define REGARG_NUMGPR 6 +#define REGARG_NUMFPR 8 +#define REGARG_FIRSTFPR RID_XMM0 +#define REGARG_LASTFPR RID_XMM7 +#define STACKARG_OFS 0 +#endif +#else +/* Common x86 ABI. */ +#define RSET_SCRATCH (RSET_ACD|RSET_FPR) +#define REGARG_GPRS (RID_ECX|(RID_EDX<<5)) /* Fastcall only. */ +#define REGARG_NUMGPR 2 /* Fastcall only. */ +#define REGARG_NUMFPR 0 +#define STACKARG_OFS 0 +#endif + +#if LJ_64 +/* Prefer the low 8 regs of each type to reduce REX prefixes. */ +#undef rset_picktop +#define rset_picktop(rs) (lj_fls(lj_bswap(rs)) ^ 0x18) +#endif + +/* -- Spill slots --------------------------------------------------------- */ + +/* Spill slots are 32 bit wide. An even/odd pair is used for FPRs. +** +** SPS_FIXED: Available fixed spill slots in interpreter frame. +** This definition must match with the *.dasc file(s). +** +** SPS_FIRST: First spill slot for general use. Reserve min. two 32 bit slots. +*/ +#if LJ_64 +#if LJ_ABI_WIN +#define SPS_FIXED (4*2) +#define SPS_FIRST (4*2) /* Don't use callee register save area. */ +#else +#if LJ_GC64 +#define SPS_FIXED 2 +#else +#define SPS_FIXED 4 +#endif +#define SPS_FIRST 2 +#endif +#else +#define SPS_FIXED 6 +#define SPS_FIRST 2 +#endif + +#define SPOFS_TMP 0 + +#define sps_scale(slot) (4 * (int32_t)(slot)) +#define sps_align(slot) (((slot) - SPS_FIXED + 3) & ~3) + +/* -- Exit state ---------------------------------------------------------- */ + +/* This definition must match with the *.dasc file(s). */ +typedef struct { + lua_Number fpr[RID_NUM_FPR]; /* Floating-point registers. */ + intptr_t gpr[RID_NUM_GPR]; /* General-purpose registers. */ + int32_t spill[256]; /* Spill slots. */ +} ExitState; + +/* Limited by the range of a short fwd jump (127): (2+2)*(32-1)-2 = 122. */ +#define EXITSTUB_SPACING (2+2) +#define EXITSTUBS_PER_GROUP 32 + +#define EXITTRACE_VMSTATE 1 /* g->vmstate has traceno on exit. */ + +/* -- x86 ModRM operand encoding ------------------------------------------ */ + +typedef enum { + XM_OFS0 = 0x00, XM_OFS8 = 0x40, XM_OFS32 = 0x80, XM_REG = 0xc0, + XM_SCALE1 = 0x00, XM_SCALE2 = 0x40, XM_SCALE4 = 0x80, XM_SCALE8 = 0xc0, + XM_MASK = 0xc0 +} x86Mode; + +/* Structure to hold variable ModRM operand. */ +typedef struct { + int32_t ofs; /* Offset. */ + uint8_t base; /* Base register or RID_NONE. */ + uint8_t idx; /* Index register or RID_NONE. */ + uint8_t scale; /* Index scale (XM_SCALE1 .. XM_SCALE8). */ +} x86ModRM; + +/* -- Opcodes ------------------------------------------------------------- */ + +/* Macros to construct variable-length x86 opcodes. -(len+1) is in LSB. */ +#define XO_(o) ((uint32_t)(0x0000fe + (0x##o<<24))) +#define XO_FPU(a,b) ((uint32_t)(0x00fd + (0x##a<<16)+(0x##b<<24))) +#define XO_0f(o) ((uint32_t)(0x0f00fd + (0x##o<<24))) +#define XO_66(o) ((uint32_t)(0x6600fd + (0x##o<<24))) +#define XO_660f(o) ((uint32_t)(0x0f66fc + (0x##o<<24))) +#define XO_f20f(o) ((uint32_t)(0x0ff2fc + (0x##o<<24))) +#define XO_f30f(o) ((uint32_t)(0x0ff3fc + (0x##o<<24))) + +#define XV_660f38(o) ((uint32_t)(0x79e2c4 + (0x##o<<24))) +#define XV_f20f38(o) ((uint32_t)(0x7be2c4 + (0x##o<<24))) +#define XV_f20f3a(o) ((uint32_t)(0x7be3c4 + (0x##o<<24))) +#define XV_f30f38(o) ((uint32_t)(0x7ae2c4 + (0x##o<<24))) + +/* This list of x86 opcodes is not intended to be complete. Opcodes are only +** included when needed. Take a look at DynASM or jit.dis_x86 to see the +** whole mess. +*/ +typedef enum { + /* Fixed length opcodes. XI_* prefix. */ + XI_O16 = 0x66, + XI_NOP = 0x90, + XI_XCHGa = 0x90, + XI_CALL = 0xe8, + XI_JMP = 0xe9, + XI_JMPs = 0xeb, + XI_PUSH = 0x50, /* Really 50+r. */ + XI_JCCs = 0x70, /* Really 7x. */ + XI_JCCn = 0x80, /* Really 0f8x. */ + XI_LEA = 0x8d, + XI_MOVrib = 0xb0, /* Really b0+r. */ + XI_MOVri = 0xb8, /* Really b8+r. */ + XI_ARITHib = 0x80, + XI_ARITHi = 0x81, + XI_ARITHi8 = 0x83, + XI_PUSHi8 = 0x6a, + XI_TESTb = 0x84, + XI_TEST = 0x85, + XI_INT3 = 0xcc, + XI_MOVmi = 0xc7, + XI_GROUP5 = 0xff, + + /* Note: little-endian byte-order! */ + XI_FLDZ = 0xeed9, + XI_FLD1 = 0xe8d9, + XI_FDUP = 0xc0d9, /* Really fld st0. */ + XI_FPOP = 0xd8dd, /* Really fstp st0. */ + XI_FPOP1 = 0xd9dd, /* Really fstp st1. */ + XI_FRNDINT = 0xfcd9, + XI_FSCALE = 0xfdd9, + XI_FYL2X = 0xf1d9, + + /* VEX-encoded instructions. XV_* prefix. */ + XV_RORX = XV_f20f3a(f0), + XV_SARX = XV_f30f38(f7), + XV_SHLX = XV_660f38(f7), + XV_SHRX = XV_f20f38(f7), + + /* Variable-length opcodes. XO_* prefix. */ + XO_OR = XO_(0b), + XO_MOV = XO_(8b), + XO_MOVto = XO_(89), + XO_MOVtow = XO_66(89), + XO_MOVtob = XO_(88), + XO_MOVmi = XO_(c7), + XO_MOVmib = XO_(c6), + XO_LEA = XO_(8d), + XO_ARITHib = XO_(80), + XO_ARITHi = XO_(81), + XO_ARITHi8 = XO_(83), + XO_ARITHiw8 = XO_66(83), + XO_SHIFTi = XO_(c1), + XO_SHIFT1 = XO_(d1), + XO_SHIFTcl = XO_(d3), + XO_IMUL = XO_0f(af), + XO_IMULi = XO_(69), + XO_IMULi8 = XO_(6b), + XO_CMP = XO_(3b), + XO_TESTb = XO_(84), + XO_TEST = XO_(85), + XO_GROUP3b = XO_(f6), + XO_GROUP3 = XO_(f7), + XO_GROUP5b = XO_(fe), + XO_GROUP5 = XO_(ff), + XO_MOVZXb = XO_0f(b6), + XO_MOVZXw = XO_0f(b7), + XO_MOVSXb = XO_0f(be), + XO_MOVSXw = XO_0f(bf), + XO_MOVSXd = XO_(63), + XO_BSWAP = XO_0f(c8), + XO_CMOV = XO_0f(40), + + XO_MOVSD = XO_f20f(10), + XO_MOVSDto = XO_f20f(11), + XO_MOVSS = XO_f30f(10), + XO_MOVSSto = XO_f30f(11), + XO_MOVLPD = XO_660f(12), + XO_MOVAPS = XO_0f(28), + XO_XORPS = XO_0f(57), + XO_ANDPS = XO_0f(54), + XO_ADDSD = XO_f20f(58), + XO_SUBSD = XO_f20f(5c), + XO_MULSD = XO_f20f(59), + XO_DIVSD = XO_f20f(5e), + XO_SQRTSD = XO_f20f(51), + XO_MINSD = XO_f20f(5d), + XO_MAXSD = XO_f20f(5f), + XO_ROUNDSD = 0x0b3a0ffc, /* Really 66 0f 3a 0b. See asm_fpmath. */ + XO_UCOMISD = XO_660f(2e), + XO_CVTSI2SD = XO_f20f(2a), + XO_CVTTSD2SI= XO_f20f(2c), + XO_CVTSI2SS = XO_f30f(2a), + XO_CVTTSS2SI= XO_f30f(2c), + XO_CVTSS2SD = XO_f30f(5a), + XO_CVTSD2SS = XO_f20f(5a), + XO_ADDSS = XO_f30f(58), + XO_MOVD = XO_660f(6e), + XO_MOVDto = XO_660f(7e), + + XO_FLDd = XO_(d9), XOg_FLDd = 0, + XO_FLDq = XO_(dd), XOg_FLDq = 0, + XO_FILDd = XO_(db), XOg_FILDd = 0, + XO_FILDq = XO_(df), XOg_FILDq = 5, + XO_FSTPd = XO_(d9), XOg_FSTPd = 3, + XO_FSTPq = XO_(dd), XOg_FSTPq = 3, + XO_FISTPq = XO_(df), XOg_FISTPq = 7, + XO_FISTTPq = XO_(dd), XOg_FISTTPq = 1, + XO_FADDq = XO_(dc), XOg_FADDq = 0, + XO_FLDCW = XO_(d9), XOg_FLDCW = 5, + XO_FNSTCW = XO_(d9), XOg_FNSTCW = 7 +} x86Op; + +/* x86 opcode groups. */ +typedef uint32_t x86Group; + +#define XG_(i8, i, g) ((x86Group)(((i8) << 16) + ((i) << 8) + (g))) +#define XG_ARITHi(g) XG_(XI_ARITHi8, XI_ARITHi, g) +#define XG_TOXOi(xg) ((x86Op)(0x000000fe + (((xg)<<16) & 0xff000000))) +#define XG_TOXOi8(xg) ((x86Op)(0x000000fe + (((xg)<<8) & 0xff000000))) + +#define XO_ARITH(a) ((x86Op)(0x030000fe + ((a)<<27))) +#define XO_ARITHw(a) ((x86Op)(0x036600fd + ((a)<<27))) + +typedef enum { + XOg_ADD, XOg_OR, XOg_ADC, XOg_SBB, XOg_AND, XOg_SUB, XOg_XOR, XOg_CMP, + XOg_X_IMUL +} x86Arith; + +typedef enum { + XOg_ROL, XOg_ROR, XOg_RCL, XOg_RCR, XOg_SHL, XOg_SHR, XOg_SAL, XOg_SAR +} x86Shift; + +typedef enum { + XOg_TEST, XOg_TEST_, XOg_NOT, XOg_NEG, XOg_MUL, XOg_IMUL, XOg_DIV, XOg_IDIV +} x86Group3; + +typedef enum { + XOg_INC, XOg_DEC, XOg_CALL, XOg_CALLfar, XOg_JMP, XOg_JMPfar, XOg_PUSH +} x86Group5; + +/* x86 condition codes. */ +typedef enum { + CC_O, CC_NO, CC_B, CC_NB, CC_E, CC_NE, CC_BE, CC_NBE, + CC_S, CC_NS, CC_P, CC_NP, CC_L, CC_NL, CC_LE, CC_NLE, + CC_C = CC_B, CC_NAE = CC_C, CC_NC = CC_NB, CC_AE = CC_NB, + CC_Z = CC_E, CC_NZ = CC_NE, CC_NA = CC_BE, CC_A = CC_NBE, + CC_PE = CC_P, CC_PO = CC_NP, CC_NGE = CC_L, CC_GE = CC_NL, + CC_NG = CC_LE, CC_G = CC_NLE +} x86CC; + +#endif |