release/src-rt-6.x.4708/linux/linux-2.6.36/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  */
  10
  11 #include <linux/types.h>
  12
  13 #ifdef CONFIG_EXPORT_UASM
  14 #include <linux/module.h>
  15 #define __uasminit
  16 #define __uasminitdata
  17 #define UASM_EXPORT_SYMBOL(sym) EXPORT_SYMBOL(sym)
  18 #else
  19 #define __uasminit __cpuinit
  20 #define __uasminitdata __cpuinitdata
  21 #define UASM_EXPORT_SYMBOL(sym)
  22 #endif
  23
  24 #define Ip_u1u2u3(op)                                                   \
  25 void __uasminit                                                         \
  26 uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  27
  28 #define Ip_u2u1u3(op)                                                   \
  29 void __uasminit                                                         \
  30 uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  31
  32 #define Ip_u3u1u2(op)                                                   \
  33 void __uasminit                                                         \
  34 uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  35
  36 #define Ip_u1u2s3(op)                                                   \
  37 void __uasminit                                                         \
  38 uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
  39
  40 #define Ip_u2s3u1(op)                                                   \
  41 void __uasminit                                                         \
  42 uasm_i##op(u32 **buf, unsigned int a, signed int b, unsigned int c)
  43
  44 #define Ip_u2u1s3(op)                                                   \
  45 void __uasminit                                                         \
  46 uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
  47
  48 #define Ip_u2u1msbu3(op)                                                \
  49 void __uasminit                                                         \
  50 uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c,   \
  51            unsigned int d)
  52
  53 #define Ip_u1u2(op)                                                     \
  54 void __uasminit uasm_i##op(u32 **buf, unsigned int a, unsigned int b)
  55
  56 #define Ip_u1s2(op)                                                     \
  57 void __uasminit uasm_i##op(u32 **buf, unsigned int a, signed int b)
  58
  59 #define Ip_u1(op) void __uasminit uasm_i##op(u32 **buf, unsigned int a)
  60
  61 #define Ip_0(op) void __uasminit uasm_i##op(u32 **buf)
  62
  63 #define Ip_bit_extract(op)                                      \
  64 void __cpuinit                                                  \
  65 uasm_i##op(u32 **buf, unsigned int a, unsigned int b,           \
  66                 unsigned int c, unsigned int d)
  67
  68 #define Ip_bit_insert(op)                                       \
  69 void __cpuinit                                                  \
  70 uasm_i##op(u32 **buf, unsigned int a, unsigned int b,           \
  71                 unsigned int c, unsigned int d)
  72
  73 Ip_u2u1s3(_addiu);
  74 Ip_u3u1u2(_addu);
  75 Ip_u2u1u3(_andi);
  76 Ip_u3u1u2(_and);
  77 Ip_u1u2s3(_beq);
  78 Ip_u1u2s3(_beql);
  79 Ip_u1s2(_bgez);
  80 Ip_u1s2(_bgezl);
  81 Ip_u1s2(_bltz);
  82 Ip_u1s2(_bltzl);
  83 Ip_u1u2s3(_bne);
  84 Ip_u2s3u1(_cache);
  85 Ip_u1u2u3(_dmfc0);
  86 Ip_u1u2u3(_dmtc0);
  87 Ip_u2u1s3(_daddiu);
  88 Ip_u3u1u2(_daddu);
  89 Ip_u2u1u3(_dsll);
  90 Ip_u2u1u3(_dsll32);
  91 Ip_u2u1u3(_dsra);
  92 Ip_u2u1u3(_dsrl);
  93 Ip_u2u1u3(_dsrl32);
  94 Ip_u2u1u3(_drotr);
  95 Ip_u2u1u3(_drotr32);
  96 Ip_u3u1u2(_dsubu);
  97 Ip_0(_eret);
  98 Ip_0(_iret);
  99 Ip_u1(_j);
 100 Ip_u1(_jal);
 101 Ip_u1(_jr);
 102 Ip_u2s3u1(_ld);
 103 Ip_u2s3u1(_ll);
 104 Ip_u2s3u1(_lld);
 105 Ip_u1s2(_lui);
 106 Ip_u2s3u1(_lw);
 107 Ip_u1u2u3(_mfc0);
 108 Ip_u1u2u3(_mtc0);
 109 Ip_u2u1u3(_ori);
 110 Ip_u3u1u2(_or);
 111 Ip_u2s3u1(_pref);
 112 Ip_0(_rfe);
 113 Ip_u2s3u1(_sc);
 114 Ip_u2s3u1(_scd);
 115 Ip_u2s3u1(_sd);
 116 Ip_u2u1u3(_sll);
 117 Ip_u2u1u3(_sra);
 118 Ip_u2u1u3(_srl);
 119 Ip_u2u1u3(_rotr);
 120 Ip_u3u1u2(_subu);
 121 Ip_u2s3u1(_sw);
 122 Ip_0(_tlbp);
 123 Ip_0(_tlbr);
 124 Ip_0(_tlbwi);
 125 Ip_0(_tlbwr);
 126 Ip_u3u1u2(_xor);
 127 Ip_u2u1u3(_xori);
 128 Ip_bit_extract(_ext);
 129 Ip_bit_insert(_ins);
 130 Ip_u2u1msbu3(_dins);
 131 Ip_u2u1msbu3(_dinsm);
 132 Ip_u1(_syscall);
 133 Ip_u1u2s3(_bbit0);
 134 Ip_u1u2s3(_bbit1);
 135 Ip_u3u1u2(_lwx);
 136 Ip_u3u1u2(_ldx);
 137
 138 /* Handle labels. */
 139 struct uasm_label {
 140         u32 *addr;
 141         int lab;
 142 };
 143
 144 void __uasminit uasm_build_label(struct uasm_label **lab, u32 *addr, int lid);
 145 #ifdef CONFIG_64BIT
 146 int uasm_in_compat_space_p(long addr);
 147 #endif
 148 int uasm_rel_hi(long val);
 149 int uasm_rel_lo(long val);
 150 void UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr);
 151 void UASM_i_LA(u32 **buf, unsigned int rs, long addr);
 152
 153 #define UASM_L_LA(lb)                                                   \
 154 static inline void __uasminit uasm_l##lb(struct uasm_label **lab, u32 *addr) \
 155 {                                                                       \
 156         uasm_build_label(lab, addr, label##lb);                         \
 157 }
 158
 159 /* convenience macros for instructions */
 160 #ifdef CONFIG_64BIT
 161 # define UASM_i_LW(buf, rs, rt, off) uasm_i_ld(buf, rs, rt, off)
 162 # define UASM_i_SW(buf, rs, rt, off) uasm_i_sd(buf, rs, rt, off)
 163 # define UASM_i_SLL(buf, rs, rt, sh) uasm_i_dsll(buf, rs, rt, sh)
 164 # define UASM_i_SRA(buf, rs, rt, sh) uasm_i_dsra(buf, rs, rt, sh)
 165 # define UASM_i_SRL(buf, rs, rt, sh) uasm_i_dsrl(buf, rs, rt, sh)
 166 # define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_dsrl_safe(buf, rs, rt, sh)
 167 # define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_drotr(buf, rs, rt, sh)
 168 # define UASM_i_MFC0(buf, rt, rd...) uasm_i_dmfc0(buf, rt, rd)
 169 # define UASM_i_MTC0(buf, rt, rd...) uasm_i_dmtc0(buf, rt, rd)
 170 # define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_daddiu(buf, rs, rt, val)
 171 # define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_daddu(buf, rs, rt, rd)
 172 # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_dsubu(buf, rs, rt, rd)
 173 # define UASM_i_LL(buf, rs, rt, off) uasm_i_lld(buf, rs, rt, off)
 174 # define UASM_i_SC(buf, rs, rt, off) uasm_i_scd(buf, rs, rt, off)
 175 # define UASM_i_LWX(buf, rs, rt, rd) uasm_i_ldx(buf, rs, rt, rd)
 176 #else
 177 /* actually, the argument sequence is: rt, rs, pos, size. -- LY22 */
 178 # define UASM_i_EXT(buf, rs, rt, size, pos) uasm_i_ext(buf, rs, rt, size, pos)
 179 # define UASM_i_INS(buf, rs, rt, size, pos) uasm_i_ins(buf, rs, rt, size, pos)
 180 # define UASM_i_LW(buf, rs, rt, off) uasm_i_lw(buf, rs, rt, off)
 181 # define UASM_i_SW(buf, rs, rt, off) uasm_i_sw(buf, rs, rt, off)
 182 # define UASM_i_SLL(buf, rs, rt, sh) uasm_i_sll(buf, rs, rt, sh)
 183 # define UASM_i_SRA(buf, rs, rt, sh) uasm_i_sra(buf, rs, rt, sh)
 184 # define UASM_i_SRL(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
 185 # define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
 186 # define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_rotr(buf, rs, rt, sh)
 187 # define UASM_i_MFC0(buf, rt, rd...) uasm_i_mfc0(buf, rt, rd)
 188 # define UASM_i_MTC0(buf, rt, rd...) uasm_i_mtc0(buf, rt, rd)
 189 # define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_addiu(buf, rs, rt, val)
 190 # define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_addu(buf, rs, rt, rd)
 191 # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_subu(buf, rs, rt, rd)
 192 # define UASM_i_LL(buf, rs, rt, off) uasm_i_ll(buf, rs, rt, off)
 193 # define UASM_i_SC(buf, rs, rt, off) uasm_i_sc(buf, rs, rt, off)
 194 # define UASM_i_LWX(buf, rs, rt, rd) uasm_i_lwx(buf, rs, rt, rd)
 195 #endif
 196
 197 #define uasm_i_b(buf, off) uasm_i_beq(buf, 0, 0, off)
 198 #define uasm_i_beqz(buf, rs, off) uasm_i_beq(buf, rs, 0, off)
 199 #define uasm_i_beqzl(buf, rs, off) uasm_i_beql(buf, rs, 0, off)
 200 #define uasm_i_bnez(buf, rs, off) uasm_i_bne(buf, rs, 0, off)
 201 #define uasm_i_bnezl(buf, rs, off) uasm_i_bnel(buf, rs, 0, off)
 202 #define uasm_i_move(buf, a, b) UASM_i_ADDU(buf, a, 0, b)
 203 #define uasm_i_nop(buf) uasm_i_sll(buf, 0, 0, 0)
 204 #define uasm_i_ssnop(buf) uasm_i_sll(buf, 0, 0, 1)
 205 #define uasm_i_ehb(buf) uasm_i_sll(buf, 0, 0, 3)
 206
 207 static inline void uasm_i_dsrl_safe(u32 **p, unsigned int a1,
 208                                     unsigned int a2, unsigned int a3)
 209 {
 210         if (a3 < 32)
 211                 uasm_i_dsrl(p, a1, a2, a3);
 212         else
 213                 uasm_i_dsrl32(p, a1, a2, a3 - 32);
 214 }
 215
 216 static inline void uasm_i_drotr_safe(u32 **p, unsigned int a1,
 217                                      unsigned int a2, unsigned int a3)
 218 {
 219         if (a3 < 32)
 220                 uasm_i_drotr(p, a1, a2, a3);
 221         else
 222                 uasm_i_drotr32(p, a1, a2, a3 - 32);
 223 }
 224
 225 static inline void uasm_i_dsll_safe(u32 **p, unsigned int a1,
 226                                     unsigned int a2, unsigned int a3)
 227 {
 228         if (a3 < 32)
 229                 uasm_i_dsll(p, a1, a2, a3);
 230         else
 231                 uasm_i_dsll32(p, a1, a2, a3 - 32);
 232 }
 233
 234 /* Handle relocations. */
 235 struct uasm_reloc {
 236         u32 *addr;
 237         unsigned int type;
 238         int lab;
 239 };
 240
 241 /* This is zero so we can use zeroed label arrays. */
 242 #define UASM_LABEL_INVALID 0
 243
 244 void uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid);
 245 void uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab);
 246 void uasm_move_relocs(struct uasm_reloc *rel, u32 *first, u32 *end, long off);
 247 void uasm_move_labels(struct uasm_label *lab, u32 *first, u32 *end, long off);
 248 void uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab,
 249         u32 *first, u32 *end, u32 *target);
 250 int uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr);
 251
 252 /* Convenience functions for labeled branches. */
 253 void uasm_il_bltz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 254 void uasm_il_b(u32 **p, struct uasm_reloc **r, int lid);
 255 void uasm_il_beqz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 256 void uasm_il_beqzl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 257 void uasm_il_bne(u32 **p, struct uasm_reloc **r, unsigned int reg1,
 258                  unsigned int reg2, int lid);
 259 void uasm_il_bnez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 260 void uasm_il_bgezl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 261 void uasm_il_bgez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 262 void uasm_il_bbit0(u32 **p, struct uasm_reloc **r, unsigned int reg,
 263                    unsigned int bit, int lid);
 264 void uasm_il_bbit1(u32 **p, struct uasm_reloc **r, unsigned int reg,
 265                    unsigned int bit, int lid);