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(_bltz);
  76 Ip_u1s2(_bltzl);
  77 Ip_u1u2s3(_bne);
  78 Ip_u2s3u1(_cache);
  79 Ip_u1u2(_cfc1);
  80 Ip_u2u1(_cfcmsa);
  81 Ip_u1u2(_ctc1);
  82 Ip_u2u1(_ctcmsa);
  83 Ip_u2u1s3(_daddiu);
  84 Ip_u3u1u2(_daddu);
  85 Ip_u1(_di);
  86 Ip_u2u1msbu3(_dins);
  87 Ip_u2u1msbu3(_dinsm);
  88 Ip_u1u2(_divu);
  89 Ip_u1u2u3(_dmfc0);
  90 Ip_u1u2u3(_dmtc0);
  91 Ip_u2u1u3(_drotr);
  92 Ip_u2u1u3(_drotr32);
  93 Ip_u2u1u3(_dsll);
  94 Ip_u2u1u3(_dsll32);
  95 Ip_u2u1u3(_dsra);
  96 Ip_u2u1u3(_dsrl);
  97 Ip_u2u1u3(_dsrl32);
  98 Ip_u3u1u2(_dsubu);
  99 Ip_0(_eret);
 100 Ip_u2u1msbu3(_ext);
 101 Ip_u2u1msbu3(_ins);
 102 Ip_u1(_j);
 103 Ip_u1(_jal);
 104 Ip_u2u1(_jalr);
 105 Ip_u1(_jr);
 106 Ip_u2s3u1(_lb);
 107 Ip_u2s3u1(_ld);
 108 Ip_u3u1u2(_ldx);
 109 Ip_u2s3u1(_lh);
 110 Ip_u2s3u1(_lhu);
 111 Ip_u2s3u1(_ll);
 112 Ip_u2s3u1(_lld);
 113 Ip_u1s2(_lui);
 114 Ip_u2s3u1(_lw);
 115 Ip_u3u1u2(_lwx);
 116 Ip_u1u2u3(_mfc0);
 117 Ip_u1u2u3(_mfhc0);
 118 Ip_u1(_mfhi);
 119 Ip_u1(_mflo);
 120 Ip_u1u2u3(_mtc0);
 121 Ip_u1u2u3(_mthc0);
 122 Ip_u1(_mthi);
 123 Ip_u1(_mtlo);
 124 Ip_u3u1u2(_mul);
 125 Ip_u3u1u2(_or);
 126 Ip_u2u1u3(_ori);
 127 Ip_u2s3u1(_pref);
 128 Ip_0(_rfe);
 129 Ip_u2u1u3(_rotr);
 130 Ip_u2s3u1(_sc);
 131 Ip_u2s3u1(_scd);
 132 Ip_u2s3u1(_sd);
 133 Ip_u2u1u3(_sll);
 134 Ip_u3u2u1(_sllv);
 135 Ip_s3s1s2(_slt);
 136 Ip_u2u1s3(_sltiu);
 137 Ip_u3u1u2(_sltu);
 138 Ip_u2u1u3(_sra);
 139 Ip_u2u1u3(_srl);
 140 Ip_u3u2u1(_srlv);
 141 Ip_u3u1u2(_subu);
 142 Ip_u2s3u1(_sw);
 143 Ip_u1(_sync);
 144 Ip_u1(_syscall);
 145 Ip_0(_tlbp);
 146 Ip_0(_tlbr);
 147 Ip_0(_tlbwi);
 148 Ip_0(_tlbwr);
 149 Ip_u1(_wait);
 150 Ip_u2u1(_wsbh);
 151 Ip_u3u1u2(_xor);
 152 Ip_u2u1u3(_xori);
 153 Ip_u2u1(_yield);
 154 Ip_u1u2(_ldpte);
 155 Ip_u2u1u3(_lddir);
 156
 157 /* Handle labels. */
 158 struct uasm_label {
 159         u32 *addr;
 160         int lab;
 161 };
 162
 163 void uasm_build_label(struct uasm_label **lab, u32 *addr,
 164                         int lid);
 165 #ifdef CONFIG_64BIT
 166 int uasm_in_compat_space_p(long addr);
 167 #endif
 168 int uasm_rel_hi(long val);
 169 int uasm_rel_lo(long val);
 170 void UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr);
 171 void UASM_i_LA(u32 **buf, unsigned int rs, long addr);
 172
 173 #define UASM_L_LA(lb)                                                   \
 174 static inline void uasm_l##lb(struct uasm_label **lab, u32 *addr)       \
 175 {                                                                       \
 176         uasm_build_label(lab, addr, label##lb);                         \
 177 }
 178
 179 /* convenience macros for instructions */
 180 #ifdef CONFIG_64BIT
 181 # define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_daddiu(buf, rs, rt, val)
 182 # define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_daddu(buf, rs, rt, rd)
 183 # define UASM_i_LL(buf, rs, rt, off) uasm_i_lld(buf, rs, rt, off)
 184 # define UASM_i_LW(buf, rs, rt, off) uasm_i_ld(buf, rs, rt, off)
 185 # define UASM_i_LWX(buf, rs, rt, rd) uasm_i_ldx(buf, rs, rt, rd)
 186 # define UASM_i_MFC0(buf, rt, rd...) uasm_i_dmfc0(buf, rt, rd)
 187 # define UASM_i_MTC0(buf, rt, rd...) uasm_i_dmtc0(buf, rt, rd)
 188 # define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_drotr(buf, rs, rt, sh)
 189 # define UASM_i_SC(buf, rs, rt, off) uasm_i_scd(buf, rs, rt, off)
 190 # define UASM_i_SLL(buf, rs, rt, sh) uasm_i_dsll(buf, rs, rt, sh)
 191 # define UASM_i_SRA(buf, rs, rt, sh) uasm_i_dsra(buf, rs, rt, sh)
 192 # define UASM_i_SRL(buf, rs, rt, sh) uasm_i_dsrl(buf, rs, rt, sh)
 193 # define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_dsrl_safe(buf, rs, rt, sh)
 194 # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_dsubu(buf, rs, rt, rd)
 195 # define UASM_i_SW(buf, rs, rt, off) uasm_i_sd(buf, rs, rt, off)
 196 #else
 197 # define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_addiu(buf, rs, rt, val)
 198 # define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_addu(buf, rs, rt, rd)
 199 # define UASM_i_LL(buf, rs, rt, off) uasm_i_ll(buf, rs, rt, off)
 200 # define UASM_i_LW(buf, rs, rt, off) uasm_i_lw(buf, rs, rt, off)
 201 # define UASM_i_LWX(buf, rs, rt, rd) uasm_i_lwx(buf, rs, rt, rd)
 202 # define UASM_i_MFC0(buf, rt, rd...) uasm_i_mfc0(buf, rt, rd)
 203 # define UASM_i_MTC0(buf, rt, rd...) uasm_i_mtc0(buf, rt, rd)
 204 # define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_rotr(buf, rs, rt, sh)
 205 # define UASM_i_SC(buf, rs, rt, off) uasm_i_sc(buf, rs, rt, off)
 206 # define UASM_i_SLL(buf, rs, rt, sh) uasm_i_sll(buf, rs, rt, sh)
 207 # define UASM_i_SRA(buf, rs, rt, sh) uasm_i_sra(buf, rs, rt, sh)
 208 # define UASM_i_SRL(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
 209 # define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
 210 # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_subu(buf, rs, rt, rd)
 211 # define UASM_i_SW(buf, rs, rt, off) uasm_i_sw(buf, rs, rt, off)
 212 #endif
 213
 214 #define uasm_i_b(buf, off) uasm_i_beq(buf, 0, 0, off)
 215 #define uasm_i_beqz(buf, rs, off) uasm_i_beq(buf, rs, 0, off)
 216 #define uasm_i_beqzl(buf, rs, off) uasm_i_beql(buf, rs, 0, off)
 217 #define uasm_i_bnez(buf, rs, off) uasm_i_bne(buf, rs, 0, off)
 218 #define uasm_i_bnezl(buf, rs, off) uasm_i_bnel(buf, rs, 0, off)
 219 #define uasm_i_ehb(buf) uasm_i_sll(buf, 0, 0, 3)
 220 #define uasm_i_move(buf, a, b) UASM_i_ADDU(buf, a, 0, b)
 221 #define uasm_i_nop(buf) uasm_i_sll(buf, 0, 0, 0)
 222 #define uasm_i_ssnop(buf) uasm_i_sll(buf, 0, 0, 1)
 223
 224 static inline void uasm_i_drotr_safe(u32 **p, unsigned int a1,
 225                                      unsigned int a2, unsigned int a3)
 226 {
 227         if (a3 < 32)
 228                 uasm_i_drotr(p, a1, a2, a3);
 229         else
 230                 uasm_i_drotr32(p, a1, a2, a3 - 32);
 231 }
 232
 233 static inline void uasm_i_dsll_safe(u32 **p, unsigned int a1,
 234                                     unsigned int a2, unsigned int a3)
 235 {
 236         if (a3 < 32)
 237                 uasm_i_dsll(p, a1, a2, a3);
 238         else
 239                 uasm_i_dsll32(p, a1, a2, a3 - 32);
 240 }
 241
 242 static inline void uasm_i_dsrl_safe(u32 **p, unsigned int a1,
 243                                     unsigned int a2, unsigned int a3)
 244 {
 245         if (a3 < 32)
 246                 uasm_i_dsrl(p, a1, a2, a3);
 247         else
 248                 uasm_i_dsrl32(p, a1, a2, a3 - 32);
 249 }
 250
 251 /* Handle relocations. */
 252 struct uasm_reloc {
 253         u32 *addr;
 254         unsigned int type;
 255         int lab;
 256 };
 257
 258 /* This is zero so we can use zeroed label arrays. */
 259 #define UASM_LABEL_INVALID 0
 260
 261 void uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid);
 262 void uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab);
 263 void uasm_move_relocs(struct uasm_reloc *rel, u32 *first, u32 *end, long off);
 264 void uasm_move_labels(struct uasm_label *lab, u32 *first, u32 *end, long off);
 265 void uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab,
 266         u32 *first, u32 *end, u32 *target);
 267 int uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr);
 268
 269 /* Convenience functions for labeled branches. */
 270 void uasm_il_b(u32 **p, struct uasm_reloc **r, int lid);
 271 void uasm_il_bbit0(u32 **p, struct uasm_reloc **r, unsigned int reg,
 272                    unsigned int bit, int lid);
 273 void uasm_il_bbit1(u32 **p, struct uasm_reloc **r, unsigned int reg,
 274                    unsigned int bit, int lid);
 275 void uasm_il_beq(u32 **p, struct uasm_reloc **r, unsigned int r1,
 276                  unsigned int r2, int lid);
 277 void uasm_il_beqz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 278 void uasm_il_beqzl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 279 void uasm_il_bgezl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 280 void uasm_il_bgez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 281 void uasm_il_bltz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 282 void uasm_il_bne(u32 **p, struct uasm_reloc **r, unsigned int reg1,
 283                  unsigned int reg2, int lid);
 284 void uasm_il_bnez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 285
 286 #endif /* __ASM_UASM_H */