arch/mips/include/asm/uasm.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2004, 2005, 2006, 2008  Thiemo Seufer
   7  * Copyright (C) 2005  Maciej W. Rozycki
   8  * Copyright (C) 2006  Ralf Baechle (ralf@linux-mips.org)
   9  * Copyright (C) 2012, 2013  MIPS Technologies, Inc.  All rights reserved.
  10  */
  11
  12 #ifndef __ASM_UASM_H
  13 #define __ASM_UASM_H
  14
  15 #include <linux/types.h>
  16
  17 #ifdef CONFIG_EXPORT_UASM
  18 #include <linux/export.h>
  19 #define UASM_EXPORT_SYMBOL(sym) EXPORT_SYMBOL(sym)
  20 #else
  21 #define UASM_EXPORT_SYMBOL(sym)
  22 #endif
  23
  24 #define Ip_u1u2u3(op)                                                   \
  25 void uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  26
  27 #define Ip_u2u1u3(op)                                                   \
  28 void uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  29
  30 #define Ip_u3u2u1(op)                                                   \
  31 void uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  32
  33 #define Ip_u3u1u2(op)                                                   \
  34 void uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  35
  36 #define Ip_u1u2s3(op)                                                   \
  37 void uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
  38
  39 #define Ip_u2s3u1(op)                                                   \
  40 void uasm_i##op(u32 **buf, unsigned int a, signed int b, unsigned int c)
  41
  42 #define Ip_s3s1s2(op)                                                   \
  43 void uasm_i##op(u32 **buf, int a, int b, int c)
  44
  45 #define Ip_u2u1s3(op)                                                   \
  46 void uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
  47
  48 #define Ip_u2u1msbu3(op)                                                \
  49 void uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c, \
  50            unsigned int d)
  51
  52 #define Ip_u1u2(op)                                                     \
  53 void uasm_i##op(u32 **buf, unsigned int a, unsigned int b)
  54
  55 #define Ip_u2u1(op)                                                     \
  56 void uasm_i##op(u32 **buf, unsigned int a, unsigned int b)
  57
  58 #define Ip_u1s2(op)                                                     \
  59 void uasm_i##op(u32 **buf, unsigned int a, signed int b)
  60
  61 #define Ip_u1(op) void uasm_i##op(u32 **buf, unsigned int a)
  62
  63 #define Ip_0(op) void uasm_i##op(u32 **buf)
  64
  65 Ip_u2u1s3(_addiu);
  66 Ip_u3u1u2(_addu);
  67 Ip_u3u1u2(_and);
  68 Ip_u2u1u3(_andi);
  69 Ip_u1u2s3(_bbit0);
  70 Ip_u1u2s3(_bbit1);
  71 Ip_u1u2s3(_beq);
  72 Ip_u1u2s3(_beql);
  73 Ip_u1s2(_bgez);
  74 Ip_u1s2(_bgezl);
  75 Ip_u1s2(_bgtz);
  76 Ip_u1s2(_blez);
  77 Ip_u1s2(_bltz);
  78 Ip_u1s2(_bltzl);
  79 Ip_u1u2s3(_bne);
  80 Ip_u1(_break);
  81 Ip_u2s3u1(_cache);
  82 Ip_u1u2(_cfc1);
  83 Ip_u2u1(_cfcmsa);
  84 Ip_u1u2(_ctc1);
  85 Ip_u2u1(_ctcmsa);
  86 Ip_u2u1s3(_daddiu);
  87 Ip_u3u1u2(_daddu);
  88 Ip_u1u2(_ddivu);
  89 Ip_u3u1u2(_ddivu_r6);
  90 Ip_u1(_di);
  91 Ip_u2u1msbu3(_dins);
  92 Ip_u2u1msbu3(_dinsm);
  93 Ip_u2u1msbu3(_dinsu);
  94 Ip_u1u2(_divu);
  95 Ip_u3u1u2(_divu_r6);
  96 Ip_u1u2u3(_dmfc0);
  97 Ip_u3u1u2(_dmodu);
  98 Ip_u1u2u3(_dmtc0);
  99 Ip_u1u2(_dmultu);
 100 Ip_u3u1u2(_dmulu);
 101 Ip_u2u1u3(_drotr);
 102 Ip_u2u1u3(_drotr32);
 103 Ip_u2u1(_dsbh);
 104 Ip_u2u1(_dshd);
 105 Ip_u2u1u3(_dsll);
 106 Ip_u2u1u3(_dsll32);
 107 Ip_u3u2u1(_dsllv);
 108 Ip_u2u1u3(_dsra);
 109 Ip_u2u1u3(_dsra32);
 110 Ip_u3u2u1(_dsrav);
 111 Ip_u2u1u3(_dsrl);
 112 Ip_u2u1u3(_dsrl32);
 113 Ip_u3u2u1(_dsrlv);
 114 Ip_u3u1u2(_dsubu);
 115 Ip_0(_eret);
 116 Ip_u2u1msbu3(_ext);
 117 Ip_u2u1msbu3(_ins);
 118 Ip_u1(_j);
 119 Ip_u1(_jal);
 120 Ip_u2u1(_jalr);
 121 Ip_u1(_jr);
 122 Ip_u2s3u1(_lb);
 123 Ip_u2s3u1(_lbu);
 124 Ip_u2s3u1(_ld);
 125 Ip_u3u1u2(_ldx);
 126 Ip_u2s3u1(_lh);
 127 Ip_u2s3u1(_lhu);
 128 Ip_u2s3u1(_ll);
 129 Ip_u2s3u1(_lld);
 130 Ip_u1s2(_lui);
 131 Ip_u2s3u1(_lw);
 132 Ip_u2s3u1(_lwu);
 133 Ip_u3u1u2(_lwx);
 134 Ip_u1u2u3(_mfc0);
 135 Ip_u1u2u3(_mfhc0);
 136 Ip_u1(_mfhi);
 137 Ip_u1(_mflo);
 138 Ip_u3u1u2(_modu);
 139 Ip_u3u1u2(_movn);
 140 Ip_u3u1u2(_movz);
 141 Ip_u1u2u3(_mtc0);
 142 Ip_u1u2u3(_mthc0);
 143 Ip_u1(_mthi);
 144 Ip_u1(_mtlo);
 145 Ip_u3u1u2(_mul);
 146 Ip_u1u2(_multu);
 147 Ip_u3u1u2(_mulu);
 148 Ip_u3u1u2(_muhu);
 149 Ip_u3u1u2(_nor);
 150 Ip_u3u1u2(_or);
 151 Ip_u2u1u3(_ori);
 152 Ip_u2s3u1(_pref);
 153 Ip_0(_rfe);
 154 Ip_u2u1u3(_rotr);
 155 Ip_u2s3u1(_sb);
 156 Ip_u2s3u1(_sc);
 157 Ip_u2s3u1(_scd);
 158 Ip_u2s3u1(_sd);
 159 Ip_u3u1u2(_seleqz);
 160 Ip_u3u1u2(_selnez);
 161 Ip_u2s3u1(_sh);
 162 Ip_u2u1u3(_sll);
 163 Ip_u3u2u1(_sllv);
 164 Ip_s3s1s2(_slt);
 165 Ip_u2u1s3(_slti);
 166 Ip_u2u1s3(_sltiu);
 167 Ip_u3u1u2(_sltu);
 168 Ip_u2u1u3(_sra);
 169 Ip_u3u2u1(_srav);
 170 Ip_u2u1u3(_srl);
 171 Ip_u3u2u1(_srlv);
 172 Ip_u3u1u2(_subu);
 173 Ip_u2s3u1(_sw);
 174 Ip_u1(_sync);
 175 Ip_u1(_syscall);
 176 Ip_0(_tlbp);
 177 Ip_0(_tlbr);
 178 Ip_0(_tlbwi);
 179 Ip_0(_tlbwr);
 180 Ip_u1(_wait);
 181 Ip_u2u1(_wsbh);
 182 Ip_u3u1u2(_xor);
 183 Ip_u2u1u3(_xori);
 184 Ip_u2u1(_yield);
 185 Ip_u1u2(_ldpte);
 186 Ip_u2u1u3(_lddir);
 187
 188 /* Handle labels. */
 189 struct uasm_label {
 190         u32 *addr;
 191         int lab;
 192 };
 193
 194 void uasm_build_label(struct uasm_label **lab, u32 *addr,
 195                         int lid);
 196 int uasm_in_compat_space_p(long addr);
 197 int uasm_rel_hi(long val);
 198 int uasm_rel_lo(long val);
 199 void UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr);
 200 void UASM_i_LA(u32 **buf, unsigned int rs, long addr);
 201
 202 #define UASM_L_LA(lb)                                                   \
 203 static inline void uasm_l##lb(struct uasm_label **lab, u32 *addr)       \
 204 {                                                                       \
 205         uasm_build_label(lab, addr, label##lb);                         \
 206 }
 207
 208 /* convenience macros for instructions */
 209 #ifdef CONFIG_64BIT
 210 # define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_daddiu(buf, rs, rt, val)
 211 # define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_daddu(buf, rs, rt, rd)
 212 # define UASM_i_LL(buf, rs, rt, off) uasm_i_lld(buf, rs, rt, off)
 213 # define UASM_i_LW(buf, rs, rt, off) uasm_i_ld(buf, rs, rt, off)
 214 # define UASM_i_LWX(buf, rs, rt, rd) uasm_i_ldx(buf, rs, rt, rd)
 215 # define UASM_i_MFC0(buf, rt, rd...) uasm_i_dmfc0(buf, rt, rd)
 216 # define UASM_i_MTC0(buf, rt, rd...) uasm_i_dmtc0(buf, rt, rd)
 217 # define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_drotr(buf, rs, rt, sh)
 218 # define UASM_i_SC(buf, rs, rt, off) uasm_i_scd(buf, rs, rt, off)
 219 # define UASM_i_SLL(buf, rs, rt, sh) uasm_i_dsll(buf, rs, rt, sh)
 220 # define UASM_i_SRA(buf, rs, rt, sh) uasm_i_dsra(buf, rs, rt, sh)
 221 # define UASM_i_SRL(buf, rs, rt, sh) uasm_i_dsrl(buf, rs, rt, sh)
 222 # define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_dsrl_safe(buf, rs, rt, sh)
 223 # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_dsubu(buf, rs, rt, rd)
 224 # define UASM_i_SW(buf, rs, rt, off) uasm_i_sd(buf, rs, rt, off)
 225 #else
 226 # define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_addiu(buf, rs, rt, val)
 227 # define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_addu(buf, rs, rt, rd)
 228 # define UASM_i_LL(buf, rs, rt, off) uasm_i_ll(buf, rs, rt, off)
 229 # define UASM_i_LW(buf, rs, rt, off) uasm_i_lw(buf, rs, rt, off)
 230 # define UASM_i_LWX(buf, rs, rt, rd) uasm_i_lwx(buf, rs, rt, rd)
 231 # define UASM_i_MFC0(buf, rt, rd...) uasm_i_mfc0(buf, rt, rd)
 232 # define UASM_i_MTC0(buf, rt, rd...) uasm_i_mtc0(buf, rt, rd)
 233 # define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_rotr(buf, rs, rt, sh)
 234 # define UASM_i_SC(buf, rs, rt, off) uasm_i_sc(buf, rs, rt, off)
 235 # define UASM_i_SLL(buf, rs, rt, sh) uasm_i_sll(buf, rs, rt, sh)
 236 # define UASM_i_SRA(buf, rs, rt, sh) uasm_i_sra(buf, rs, rt, sh)
 237 # define UASM_i_SRL(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
 238 # define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
 239 # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_subu(buf, rs, rt, rd)
 240 # define UASM_i_SW(buf, rs, rt, off) uasm_i_sw(buf, rs, rt, off)
 241 #endif
 242
 243 #define uasm_i_b(buf, off) uasm_i_beq(buf, 0, 0, off)
 244 #define uasm_i_beqz(buf, rs, off) uasm_i_beq(buf, rs, 0, off)
 245 #define uasm_i_beqzl(buf, rs, off) uasm_i_beql(buf, rs, 0, off)
 246 #define uasm_i_bnez(buf, rs, off) uasm_i_bne(buf, rs, 0, off)
 247 #define uasm_i_bnezl(buf, rs, off) uasm_i_bnel(buf, rs, 0, off)
 248 #define uasm_i_ehb(buf) uasm_i_sll(buf, 0, 0, 3)
 249 #define uasm_i_move(buf, a, b) UASM_i_ADDU(buf, a, 0, b)
 250 #ifdef CONFIG_CPU_NOP_WORKAROUNDS
 251 #define uasm_i_nop(buf) uasm_i_or(buf, 1, 1, 0)
 252 #else
 253 #define uasm_i_nop(buf) uasm_i_sll(buf, 0, 0, 0)
 254 #endif
 255 #define uasm_i_ssnop(buf) uasm_i_sll(buf, 0, 0, 1)
 256
 257 static inline void uasm_i_drotr_safe(u32 **p, unsigned int a1,
 258                                      unsigned int a2, unsigned int a3)
 259 {
 260         if (a3 < 32)
 261                 uasm_i_drotr(p, a1, a2, a3);
 262         else
 263                 uasm_i_drotr32(p, a1, a2, a3 - 32);
 264 }
 265
 266 static inline void uasm_i_dsll_safe(u32 **p, unsigned int a1,
 267                                     unsigned int a2, unsigned int a3)
 268 {
 269         if (a3 < 32)
 270                 uasm_i_dsll(p, a1, a2, a3);
 271         else
 272                 uasm_i_dsll32(p, a1, a2, a3 - 32);
 273 }
 274
 275 static inline void uasm_i_dsrl_safe(u32 **p, unsigned int a1,
 276                                     unsigned int a2, unsigned int a3)
 277 {
 278         if (a3 < 32)
 279                 uasm_i_dsrl(p, a1, a2, a3);
 280         else
 281                 uasm_i_dsrl32(p, a1, a2, a3 - 32);
 282 }
 283
 284 static inline void uasm_i_dsra_safe(u32 **p, unsigned int a1,
 285                                     unsigned int a2, unsigned int a3)
 286 {
 287         if (a3 < 32)
 288                 uasm_i_dsra(p, a1, a2, a3);
 289         else
 290                 uasm_i_dsra32(p, a1, a2, a3 - 32);
 291 }
 292
 293 /* Handle relocations. */
 294 struct uasm_reloc {
 295         u32 *addr;
 296         unsigned int type;
 297         int lab;
 298 };
 299
 300 /* This is zero so we can use zeroed label arrays. */
 301 #define UASM_LABEL_INVALID 0
 302
 303 void uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid);
 304 void uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab);
 305 void uasm_move_relocs(struct uasm_reloc *rel, u32 *first, u32 *end, long off);
 306 void uasm_move_labels(struct uasm_label *lab, u32 *first, u32 *end, long off);
 307 void uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab,
 308         u32 *first, u32 *end, u32 *target);
 309 int uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr);
 310
 311 /* Convenience functions for labeled branches. */
 312 void uasm_il_b(u32 **p, struct uasm_reloc **r, int lid);
 313 void uasm_il_bbit0(u32 **p, struct uasm_reloc **r, unsigned int reg,
 314                    unsigned int bit, int lid);
 315 void uasm_il_bbit1(u32 **p, struct uasm_reloc **r, unsigned int reg,
 316                    unsigned int bit, int lid);
 317 void uasm_il_beq(u32 **p, struct uasm_reloc **r, unsigned int r1,
 318                  unsigned int r2, int lid);
 319 void uasm_il_beqz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 320 void uasm_il_beqzl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 321 void uasm_il_bgezl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 322 void uasm_il_bgez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 323 void uasm_il_bltz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 324 void uasm_il_bne(u32 **p, struct uasm_reloc **r, unsigned int reg1,
 325                  unsigned int reg2, int lid);
 326 void uasm_il_bnez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 327
 328 #endif /* __ASM_UASM_H */