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