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  MIPS Technologies, Inc.
  10 */
  11
  12#include <linux/types.h>
  13
  14#ifdef CONFIG_EXPORT_UASM
  15#include <linux/export.h>
  16#define __uasminit
  17#define __uasminitdata
  18#define UASM_EXPORT_SYMBOL(sym) EXPORT_SYMBOL(sym)
  19#else
  20#define __uasminit __cpuinit
  21#define __uasminitdata __cpuinitdata
  22#define UASM_EXPORT_SYMBOL(sym)
  23#endif
  24
  25#define Ip_u1u2u3(op)                                                   \
  26void __uasminit                                                         \
  27uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  28
  29#define Ip_u2u1u3(op)                                                   \
  30void __uasminit                                                         \
  31uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  32
  33#define Ip_u3u1u2(op)                                                   \
  34void __uasminit                                                         \
  35uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  36
  37#define Ip_u1u2s3(op)                                                   \
  38void __uasminit                                                         \
  39uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
  40
  41#define Ip_u2s3u1(op)                                                   \
  42void __uasminit                                                         \
  43uasm_i##op(u32 **buf, unsigned int a, signed int b, unsigned int c)
  44
  45#define Ip_u2u1s3(op)                                                   \
  46void __uasminit                                                         \
  47uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
  48
  49#define Ip_u2u1msbu3(op)                                                \
  50void __uasminit                                                         \
  51uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c,   \
  52           unsigned int d)
  53
  54#define Ip_u1u2(op)                                                     \
  55void __uasminit uasm_i##op(u32 **buf, unsigned int a, unsigned int b)
  56
  57#define Ip_u1s2(op)                                                     \
  58void __uasminit uasm_i##op(u32 **buf, unsigned int a, signed int b)
  59
  60#define Ip_u1(op) void __uasminit uasm_i##op(u32 **buf, unsigned int a)
  61
  62#define Ip_0(op) void __uasminit uasm_i##op(u32 **buf)
  63
  64Ip_u2u1s3(_addiu);
  65Ip_u3u1u2(_addu);
  66Ip_u3u1u2(_and);
  67Ip_u2u1u3(_andi);
  68Ip_u1u2s3(_bbit0);
  69Ip_u1u2s3(_bbit1);
  70Ip_u1u2s3(_beq);
  71Ip_u1u2s3(_beql);
  72Ip_u1s2(_bgez);
  73Ip_u1s2(_bgezl);
  74Ip_u1s2(_bltz);
  75Ip_u1s2(_bltzl);
  76Ip_u1u2s3(_bne);
  77Ip_u2s3u1(_cache);
  78Ip_u2u1s3(_daddiu);
  79Ip_u3u1u2(_daddu);
  80Ip_u2u1msbu3(_dins);
  81Ip_u2u1msbu3(_dinsm);
  82Ip_u1u2u3(_dmfc0);
  83Ip_u1u2u3(_dmtc0);
  84Ip_u2u1u3(_drotr);
  85Ip_u2u1u3(_drotr32);
  86Ip_u2u1u3(_dsll);
  87Ip_u2u1u3(_dsll32);
  88Ip_u2u1u3(_dsra);
  89Ip_u2u1u3(_dsrl);
  90Ip_u2u1u3(_dsrl32);
  91Ip_u3u1u2(_dsubu);
  92Ip_0(_eret);
  93Ip_u1(_j);
  94Ip_u1(_jal);
  95Ip_u1(_jr);
  96Ip_u2s3u1(_ld);
  97Ip_u3u1u2(_ldx);
  98Ip_u2s3u1(_ll);
  99Ip_u2s3u1(_lld);
 100Ip_u1s2(_lui);
 101Ip_u2s3u1(_lw);
 102Ip_u3u1u2(_lwx);
 103Ip_u1u2u3(_mfc0);
 104Ip_u1u2u3(_mtc0);
 105Ip_u3u1u2(_or);
 106Ip_u2u1u3(_ori);
 107Ip_u2s3u1(_pref);
 108Ip_0(_rfe);
 109Ip_u2u1u3(_rotr);
 110Ip_u2s3u1(_sc);
 111Ip_u2s3u1(_scd);
 112Ip_u2s3u1(_sd);
 113Ip_u2u1u3(_sll);
 114Ip_u2u1u3(_sra);
 115Ip_u2u1u3(_srl);
 116Ip_u3u1u2(_subu);
 117Ip_u2s3u1(_sw);
 118Ip_u1(_syscall);
 119Ip_0(_tlbp);
 120Ip_0(_tlbr);
 121Ip_0(_tlbwi);
 122Ip_0(_tlbwr);
 123Ip_u3u1u2(_xor);
 124Ip_u2u1u3(_xori);
 125
 126
 127/* Handle labels. */
 128struct uasm_label {
 129        u32 *addr;
 130        int lab;
 131};
 132
 133void __uasminit uasm_build_label(struct uasm_label **lab, u32 *addr, int lid);
 134#ifdef CONFIG_64BIT
 135int uasm_in_compat_space_p(long addr);
 136#endif
 137int uasm_rel_hi(long val);
 138int uasm_rel_lo(long val);
 139void UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr);
 140void UASM_i_LA(u32 **buf, unsigned int rs, long addr);
 141
 142#define UASM_L_LA(lb)                                                   \
 143static inline void __uasminit uasm_l##lb(struct uasm_label **lab, u32 *addr) \
 144{                                                                       \
 145        uasm_build_label(lab, addr, label##lb);                         \
 146}
 147
 148/* convenience macros for instructions */
 149#ifdef CONFIG_64BIT
 150# define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_daddiu(buf, rs, rt, val)
 151# define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_daddu(buf, rs, rt, rd)
 152# define UASM_i_LL(buf, rs, rt, off) uasm_i_lld(buf, rs, rt, off)
 153# define UASM_i_LW(buf, rs, rt, off) uasm_i_ld(buf, rs, rt, off)
 154# define UASM_i_LWX(buf, rs, rt, rd) uasm_i_ldx(buf, rs, rt, rd)
 155# define UASM_i_MFC0(buf, rt, rd...) uasm_i_dmfc0(buf, rt, rd)
 156# define UASM_i_MTC0(buf, rt, rd...) uasm_i_dmtc0(buf, rt, rd)
 157# define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_drotr(buf, rs, rt, sh)
 158# define UASM_i_SC(buf, rs, rt, off) uasm_i_scd(buf, rs, rt, off)
 159# define UASM_i_SLL(buf, rs, rt, sh) uasm_i_dsll(buf, rs, rt, sh)
 160# define UASM_i_SRA(buf, rs, rt, sh) uasm_i_dsra(buf, rs, rt, sh)
 161# define UASM_i_SRL(buf, rs, rt, sh) uasm_i_dsrl(buf, rs, rt, sh)
 162# define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_dsrl_safe(buf, rs, rt, sh)
 163# define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_dsubu(buf, rs, rt, rd)
 164# define UASM_i_SW(buf, rs, rt, off) uasm_i_sd(buf, rs, rt, off)
 165#else
 166# define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_addiu(buf, rs, rt, val)
 167# define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_addu(buf, rs, rt, rd)
 168# define UASM_i_LL(buf, rs, rt, off) uasm_i_ll(buf, rs, rt, off)
 169# define UASM_i_LW(buf, rs, rt, off) uasm_i_lw(buf, rs, rt, off)
 170# define UASM_i_LWX(buf, rs, rt, rd) uasm_i_lwx(buf, rs, rt, rd)
 171# define UASM_i_MFC0(buf, rt, rd...) uasm_i_mfc0(buf, rt, rd)
 172# define UASM_i_MTC0(buf, rt, rd...) uasm_i_mtc0(buf, rt, rd)
 173# define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_rotr(buf, rs, rt, sh)
 174# define UASM_i_SC(buf, rs, rt, off) uasm_i_sc(buf, rs, rt, off)
 175# define UASM_i_SLL(buf, rs, rt, sh) uasm_i_sll(buf, rs, rt, sh)
 176# define UASM_i_SRA(buf, rs, rt, sh) uasm_i_sra(buf, rs, rt, sh)
 177# define UASM_i_SRL(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
 178# define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
 179# define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_subu(buf, rs, rt, rd)
 180# define UASM_i_SW(buf, rs, rt, off) uasm_i_sw(buf, rs, rt, off)
 181#endif
 182
 183#define uasm_i_b(buf, off) uasm_i_beq(buf, 0, 0, off)
 184#define uasm_i_beqz(buf, rs, off) uasm_i_beq(buf, rs, 0, off)
 185#define uasm_i_beqzl(buf, rs, off) uasm_i_beql(buf, rs, 0, off)
 186#define uasm_i_bnez(buf, rs, off) uasm_i_bne(buf, rs, 0, off)
 187#define uasm_i_bnezl(buf, rs, off) uasm_i_bnel(buf, rs, 0, off)
 188#define uasm_i_ehb(buf) uasm_i_sll(buf, 0, 0, 3)
 189#define uasm_i_move(buf, a, b) UASM_i_ADDU(buf, a, 0, b)
 190#define uasm_i_nop(buf) uasm_i_sll(buf, 0, 0, 0)
 191#define uasm_i_ssnop(buf) uasm_i_sll(buf, 0, 0, 1)
 192
 193static inline void uasm_i_drotr_safe(u32 **p, unsigned int a1,
 194                                     unsigned int a2, unsigned int a3)
 195{
 196        if (a3 < 32)
 197                uasm_i_drotr(p, a1, a2, a3);
 198        else
 199                uasm_i_drotr32(p, a1, a2, a3 - 32);
 200}
 201
 202static inline void uasm_i_dsll_safe(u32 **p, unsigned int a1,
 203                                    unsigned int a2, unsigned int a3)
 204{
 205        if (a3 < 32)
 206                uasm_i_dsll(p, a1, a2, a3);
 207        else
 208                uasm_i_dsll32(p, a1, a2, a3 - 32);
 209}
 210
 211static inline void uasm_i_dsrl_safe(u32 **p, unsigned int a1,
 212                                    unsigned int a2, unsigned int a3)
 213{
 214        if (a3 < 32)
 215                uasm_i_dsrl(p, a1, a2, a3);
 216        else
 217                uasm_i_dsrl32(p, a1, a2, a3 - 32);
 218}
 219
 220/* Handle relocations. */
 221struct uasm_reloc {
 222        u32 *addr;
 223        unsigned int type;
 224        int lab;
 225};
 226
 227/* This is zero so we can use zeroed label arrays. */
 228#define UASM_LABEL_INVALID 0
 229
 230void uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid);
 231void uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab);
 232void uasm_move_relocs(struct uasm_reloc *rel, u32 *first, u32 *end, long off);
 233void uasm_move_labels(struct uasm_label *lab, u32 *first, u32 *end, long off);
 234void uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab,
 235        u32 *first, u32 *end, u32 *target);
 236int uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr);
 237
 238/* Convenience functions for labeled branches. */
 239void uasm_il_b(u32 **p, struct uasm_reloc **r, int lid);
 240void uasm_il_bbit0(u32 **p, struct uasm_reloc **r, unsigned int reg,
 241                   unsigned int bit, int lid);
 242void uasm_il_bbit1(u32 **p, struct uasm_reloc **r, unsigned int reg,
 243                   unsigned int bit, int lid);
 244void uasm_il_beqz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 245void uasm_il_beqzl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 246void uasm_il_bgezl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 247void uasm_il_bgez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 248void uasm_il_bltz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 249void uasm_il_bne(u32 **p, struct uasm_reloc **r, unsigned int reg1,
 250                 unsigned int reg2, int lid);
 251void uasm_il_bnez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 252