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