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