1 /* Id: macdefs.h,v 1.35 2015/11/24 17:35:11 ragge Exp */ 2 /* $NetBSD: macdefs.h,v 1.1.1.5 2016/02/09 20:28:10 plunky Exp $ */ 3 /* 4 * Copyright (c) 2008 Michael Shalayeff 5 * Copyright (c) 2003 Anders Magnusson (ragge@ludd.luth.se). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * Machine-dependent defines for both passes. 33 */ 34 35 /* 36 * Convert (multi-)character constant to integer. 37 */ 38 #define makecc(val,i) lastcon = (lastcon<<8)|((val<<24)>>24); 39 40 #define ARGINIT 128 /* # bits above fp where arguments start */ 41 #define AUTOINIT 0 /* # bits below fp where automatics start */ 42 43 /* 44 * Storage space requirements 45 */ 46 #define SZCHAR 8 47 #define SZBOOL 8 48 #define SZSHORT 16 49 #define SZINT 32 50 #define SZLONG 64 51 #define SZPOINT(t) 64 52 #define SZLONGLONG 64 53 #define SZFLOAT 32 54 #define SZDOUBLE 64 55 #define SZLDOUBLE 128 56 57 /* 58 * Alignment constraints 59 */ 60 #define ALCHAR 8 61 #define ALBOOL 8 62 #define ALSHORT 16 63 #define ALINT 32 64 #define ALLONG 64 65 #define ALPOINT 64 66 #define ALLONGLONG 64 67 #define ALFLOAT 32 68 #define ALDOUBLE 64 69 #define ALLDOUBLE 128 70 /* #undef ALSTRUCT amd64 struct alignment is member defined */ 71 #define ALSTACK 64 72 #define ALMAX 128 73 74 /* 75 * Min/max values. 76 */ 77 #define MIN_CHAR -128 78 #define MAX_CHAR 127 79 #define MAX_UCHAR 255 80 #define MIN_SHORT -32768 81 #define MAX_SHORT 32767 82 #define MAX_USHORT 65535 83 #define MIN_INT (-0x7fffffff-1) 84 #define MAX_INT 0x7fffffff 85 #define MAX_UNSIGNED 0xffffffffU 86 #define MIN_LONG 0x8000000000000000LL 87 #define MAX_LONG 0x7fffffffffffffffLL 88 #define MAX_ULONG 0xffffffffffffffffULL 89 #define MIN_LONGLONG 0x8000000000000000LL 90 #define MAX_LONGLONG 0x7fffffffffffffffLL 91 #define MAX_ULONGLONG 0xffffffffffffffffULL 92 93 /* Default char is signed */ 94 #undef CHAR_UNSIGNED 95 #define BOOL_TYPE UCHAR /* what used to store _Bool */ 96 97 /* 98 * Use large-enough types. 99 */ 100 typedef long long CONSZ; 101 typedef unsigned long long U_CONSZ; 102 typedef long long OFFSZ; 103 104 #define CONFMT "%lld" /* format for printing constants */ 105 #define LABFMT ".L%d" /* format for printing labels */ 106 #define STABLBL ".LL%d" /* format for stab (debugging) labels */ 107 #ifdef LANG_F77 108 #define BLANKCOMMON "_BLNK_" 109 #define MSKIREG (M(TYSHORT)|M(TYLONG)) 110 #define TYIREG TYLONG 111 #define FSZLENG FSZLONG 112 #define AUTOREG EBP 113 #define ARGREG EBP 114 #define ARGOFFSET 8 115 #endif 116 117 #define BACKAUTO /* stack grows negatively for automatics */ 118 #define BACKTEMP /* stack grows negatively for temporaries */ 119 120 #undef FIELDOPS /* no bit-field instructions */ 121 #define TARGET_ENDIAN TARGET_LE /* little-endian only */ 122 123 #define FINDMOPS /* i386 has instructions that modifies memory */ 124 125 #define CC_DIV_0 /* division by zero is safe in the compiler */ 126 127 #ifdef MACHOABI 128 #define HASP2ALIGN 129 #endif 130 131 /* Definitions mostly used in pass2 */ 132 133 #define BYTEOFF(x) ((x)&07) 134 #define wdal(k) (BYTEOFF(k)==0) 135 136 #define STOARG(p) 137 #define STOFARG(p) 138 #define STOSTARG(p) 139 #define genfcall(a,b) gencall(a,b) 140 141 /* How many integer registers are needed? (used for stack allocation) */ 142 #define szty(t) (t < LONG || t == FLOAT ? 1 : t == LDOUBLE ? 4 : 2) 143 144 /* 145 * The amd64 architecture has a much cleaner interface to its registers 146 * than the x86, even though a part of the register block comes from 147 * the x86 architecture. Therefore currently only two non-overlapping 148 * register classes are used; integer and xmm registers. 149 * 150 * All registers are given a sequential number to 151 * identify it which must match rnames[] in local2.c. 152 * 153 * The classes used on amd64 are: 154 * A - integer registers 155 * B - xmm registers 156 * C - x87 registers 157 */ 158 #define RAX 000 159 #define RDX 001 160 #define RCX 002 161 #define RBX 003 162 #define RSI 004 163 #define RDI 005 164 #define RBP 006 165 #define RSP 007 166 #define R08 010 167 #define R09 011 168 #define R10 012 169 #define R11 013 170 #define R12 014 171 #define R13 015 172 #define R14 016 173 #define R15 017 174 175 #define XMM0 020 176 #define XMM1 021 177 #define XMM2 022 178 #define XMM3 023 179 #define XMM4 024 180 #define XMM5 025 181 #define XMM6 026 182 #define XMM7 027 183 #define XMM8 030 184 #define XMM9 031 185 #define XMM10 032 186 #define XMM11 033 187 #define XMM12 034 188 #define XMM13 035 189 #define XMM14 036 190 #define XMM15 037 191 192 #define MAXREGS 050 /* 40 registers */ 193 194 #define RSTATUS \ 195 SAREG|TEMPREG, SAREG|TEMPREG, SAREG|TEMPREG, SAREG|PERMREG, \ 196 SAREG|TEMPREG, SAREG|TEMPREG, 0, 0, \ 197 SAREG|TEMPREG, SAREG|TEMPREG, SAREG|TEMPREG, SAREG|TEMPREG, \ 198 SAREG|PERMREG, SAREG|PERMREG, SAREG|PERMREG, SAREG|PERMREG, \ 199 SBREG|TEMPREG, SBREG|TEMPREG, SBREG|TEMPREG, SBREG|TEMPREG, \ 200 SBREG|TEMPREG, SBREG|TEMPREG, SBREG|TEMPREG, SBREG|TEMPREG, \ 201 SBREG|TEMPREG, SBREG|TEMPREG, SBREG|TEMPREG, SBREG|TEMPREG, \ 202 SBREG|TEMPREG, SBREG|TEMPREG, SBREG|TEMPREG, SBREG|TEMPREG, \ 203 SCREG, SCREG, SCREG, SCREG, SCREG, SCREG, SCREG, SCREG, 204 205 206 /* no overlapping registers at all */ 207 #define ROVERLAP \ 208 { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, \ 209 { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, \ 210 { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, \ 211 { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, \ 212 { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, 213 214 215 /* Return a register class based on the type of the node */ 216 #define PCLASS(p) (p->n_type == FLOAT || p->n_type == DOUBLE ? SBREG : \ 217 p->n_type == LDOUBLE ? SCREG : SAREG) 218 219 #define NUMCLASS 3 /* highest number of reg classes used */ 220 221 int COLORMAP(int c, int *r); 222 #define GCLASS(x) (x < 16 ? CLASSA : x < 32 ? CLASSB : CLASSC) 223 #define DECRA(x,y) (((x) >> (y*8)) & 255) /* decode encoded regs */ 224 #define ENCRD(x) (x) /* Encode dest reg in n_reg */ 225 #define ENCRA1(x) ((x) << 8) /* A1 */ 226 #define ENCRA2(x) ((x) << 16) /* A2 */ 227 #define ENCRA(x,y) ((x) << (8+y*8)) /* encode regs in int */ 228 229 #define RETREG(x) (x == FLOAT || x == DOUBLE ? XMM0 : \ 230 x == LDOUBLE ? 32 : RAX) 231 232 /* XXX - to die */ 233 #define FPREG RBP /* frame pointer */ 234 #define STKREG RSP /* stack pointer */ 235 236 #define SHSTR (MAXSPECIAL+1) /* short struct */ 237 #define SFUNCALL (MAXSPECIAL+2) /* struct assign after function call */ 238 #define SPCON (MAXSPECIAL+3) /* positive nonnamed constant */ 239 240 /* 241 * Specials that indicate the applicability of machine idioms. 242 */ 243 #define SMIXOR (MAXSPECIAL+4) 244 #define SMILWXOR (MAXSPECIAL+5) 245 #define SMIHWXOR (MAXSPECIAL+6) 246 #define SCON32 (MAXSPECIAL+7) /* 32-bit constant */ 247 248 /* 249 * i386-specific symbol table flags. 250 */ 251 #define SBEENHERE SLOCAL1 252 253 /* 254 * Extended assembler macros. 255 */ 256 int xasmconstregs(char *); 257 void targarg(char *w, void *arg, int n); 258 #define XASM_TARGARG(w, ary) \ 259 (w[1] == 'b' || w[1] == 'h' || w[1] == 'w' || w[1] == 'k' || \ 260 w[1] == 'q' ? w++, targarg(w, ary, n), 1 : 0) 261 int numconv(void *ip, void *p, void *q); 262 #define XASM_NUMCONV(ip, p, q) numconv(ip, p, q) 263 #define XASMCONSTREGS(x) xasmconstregs(x) 264 265 #define HAVE_WEAKREF 266 #define TARGET_FLT_EVAL_METHOD 0 /* all as their type */ 267 /* 268 * builtins. 269 */ 270 #define TARGET_VALIST 271 #define TARGET_STDARGS 272 #define TARGET_BUILTINS \ 273 { "__builtin_stdarg_start", amd64_builtin_stdarg_start, \ 274 0, 2, 0, VOID }, \ 275 { "__builtin_va_start", amd64_builtin_stdarg_start, \ 276 0, 2, 0, VOID }, \ 277 { "__builtin_va_arg", amd64_builtin_va_arg, BTNORVAL|BTNOPROTO, \ 278 2, 0, 0 }, \ 279 { "__builtin_va_end", amd64_builtin_va_end, 0, 1, 0, VOID }, \ 280 { "__builtin_va_copy", amd64_builtin_va_copy, 0, 2, 0, VOID }, 281 282 #ifdef LANG_CXX 283 #define P1ND struct node 284 #else 285 #define P1ND struct p1node 286 #endif 287 struct node; 288 struct bitable; 289 P1ND *amd64_builtin_stdarg_start(const struct bitable *, P1ND *a); 290 P1ND *amd64_builtin_va_arg(const struct bitable *, P1ND *a); 291 P1ND *amd64_builtin_va_end(const struct bitable *, P1ND *a); 292 P1ND *amd64_builtin_va_copy(const struct bitable *, P1ND *a); 293 #undef P1ND 294 295 /* target specific attributes */ 296 #define ATTR_MI_TARGET ATTR_AMD64_CMPLRET, ATTR_AMD64_XORLBL 297 #define NATIVE_FLOATING_POINT 298