arch/mips/mm/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 #define Ip_u1u2u3(op)                                                   \
  14 void __init                                                             \
  15 uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  16
  17 #define Ip_u2u1u3(op)                                                   \
  18 void __init                                                             \
  19 uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  20
  21 #define Ip_u3u1u2(op)                                                   \
  22 void __init                                                             \
  23 uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
  24
  25 #define Ip_u1u2s3(op)                                                   \
  26 void __init                                                             \
  27 uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
  28
  29 #define Ip_u2s3u1(op)                                                   \
  30 void __init                                                             \
  31 uasm_i##op(u32 **buf, unsigned int a, signed int b, unsigned int c)
  32
  33 #define Ip_u2u1s3(op)                                                   \
  34 void __init                                                             \
  35 uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
  36
  37 #define Ip_u1u2(op)                                                     \
  38 void __init uasm_i##op(u32 **buf, unsigned int a, unsigned int b)
  39
  40 #define Ip_u1s2(op)                                                     \
  41 void __init uasm_i##op(u32 **buf, unsigned int a, signed int b)
  42
  43 #define Ip_u1(op) void __init uasm_i##op(u32 **buf, unsigned int a)
  44
  45 #define Ip_0(op) void __init uasm_i##op(u32 **buf)
  46
  47 Ip_u2u1s3(_addiu);
  48 Ip_u3u1u2(_addu);
  49 Ip_u2u1u3(_andi);
  50 Ip_u3u1u2(_and);
  51 Ip_u1u2s3(_beq);
  52 Ip_u1u2s3(_beql);
  53 Ip_u1s2(_bgez);
  54 Ip_u1s2(_bgezl);
  55 Ip_u1s2(_bltz);
  56 Ip_u1s2(_bltzl);
  57 Ip_u1u2s3(_bne);
  58 Ip_u1u2u3(_dmfc0);
  59 Ip_u1u2u3(_dmtc0);
  60 Ip_u2u1s3(_daddiu);
  61 Ip_u3u1u2(_daddu);
  62 Ip_u2u1u3(_dsll);
  63 Ip_u2u1u3(_dsll32);
  64 Ip_u2u1u3(_dsra);
  65 Ip_u2u1u3(_dsrl);
  66 Ip_u2u1u3(_dsrl32);
  67 Ip_u3u1u2(_dsubu);
  68 Ip_0(_eret);
  69 Ip_u1(_j);
  70 Ip_u1(_jal);
  71 Ip_u1(_jr);
  72 Ip_u2s3u1(_ld);
  73 Ip_u2s3u1(_ll);
  74 Ip_u2s3u1(_lld);
  75 Ip_u1s2(_lui);
  76 Ip_u2s3u1(_lw);
  77 Ip_u1u2u3(_mfc0);
  78 Ip_u1u2u3(_mtc0);
  79 Ip_u2u1u3(_ori);
  80 Ip_0(_rfe);
  81 Ip_u2s3u1(_sc);
  82 Ip_u2s3u1(_scd);
  83 Ip_u2s3u1(_sd);
  84 Ip_u2u1u3(_sll);
  85 Ip_u2u1u3(_sra);
  86 Ip_u2u1u3(_srl);
  87 Ip_u3u1u2(_subu);
  88 Ip_u2s3u1(_sw);
  89 Ip_0(_tlbp);
  90 Ip_0(_tlbwi);
  91 Ip_0(_tlbwr);
  92 Ip_u3u1u2(_xor);
  93 Ip_u2u1u3(_xori);
  94
  95 /* Handle labels. */
  96 struct uasm_label {
  97         u32 *addr;
  98         int lab;
  99 };
 100
 101 void __init uasm_build_label(struct uasm_label **lab, u32 *addr, int lid);
 102 #ifdef CONFIG_64BIT
 103 int __init uasm_in_compat_space_p(long addr);
 104 int __init uasm_rel_highest(long val);
 105 int __init uasm_rel_higher(long val);
 106 #endif
 107 int __init uasm_rel_hi(long val);
 108 int __init uasm_rel_lo(long val);
 109 void __init UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr);
 110 void __init UASM_i_LA(u32 **buf, unsigned int rs, long addr);
 111
 112 #define UASM_L_LA(lb)                                                   \
 113 static inline void __init uasm_l##lb(struct uasm_label **lab, u32 *addr) \
 114 {                                                                       \
 115         uasm_build_label(lab, addr, label##lb);                         \
 116 }
 117
 118 /* convenience macros for instructions */
 119 #ifdef CONFIG_64BIT
 120 # define UASM_i_LW(buf, rs, rt, off) uasm_i_ld(buf, rs, rt, off)
 121 # define UASM_i_SW(buf, rs, rt, off) uasm_i_sd(buf, rs, rt, off)
 122 # define UASM_i_SLL(buf, rs, rt, sh) uasm_i_dsll(buf, rs, rt, sh)
 123 # define UASM_i_SRA(buf, rs, rt, sh) uasm_i_dsra(buf, rs, rt, sh)
 124 # define UASM_i_SRL(buf, rs, rt, sh) uasm_i_dsrl(buf, rs, rt, sh)
 125 # define UASM_i_MFC0(buf, rt, rd...) uasm_i_dmfc0(buf, rt, rd)
 126 # define UASM_i_MTC0(buf, rt, rd...) uasm_i_dmtc0(buf, rt, rd)
 127 # define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_daddiu(buf, rs, rt, val)
 128 # define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_daddu(buf, rs, rt, rd)
 129 # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_dsubu(buf, rs, rt, rd)
 130 # define UASM_i_LL(buf, rs, rt, off) uasm_i_lld(buf, rs, rt, off)
 131 # define UASM_i_SC(buf, rs, rt, off) uasm_i_scd(buf, rs, rt, off)
 132 #else
 133 # define UASM_i_LW(buf, rs, rt, off) uasm_i_lw(buf, rs, rt, off)
 134 # define UASM_i_SW(buf, rs, rt, off) uasm_i_sw(buf, rs, rt, off)
 135 # define UASM_i_SLL(buf, rs, rt, sh) uasm_i_sll(buf, rs, rt, sh)
 136 # define UASM_i_SRA(buf, rs, rt, sh) uasm_i_sra(buf, rs, rt, sh)
 137 # define UASM_i_SRL(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
 138 # define UASM_i_MFC0(buf, rt, rd...) uasm_i_mfc0(buf, rt, rd)
 139 # define UASM_i_MTC0(buf, rt, rd...) uasm_i_mtc0(buf, rt, rd)
 140 # define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_addiu(buf, rs, rt, val)
 141 # define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_addu(buf, rs, rt, rd)
 142 # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_subu(buf, rs, rt, rd)
 143 # define UASM_i_LL(buf, rs, rt, off) uasm_i_ll(buf, rs, rt, off)
 144 # define UASM_i_SC(buf, rs, rt, off) uasm_i_sc(buf, rs, rt, off)
 145 #endif
 146
 147 #define uasm_i_b(buf, off) uasm_i_beq(buf, 0, 0, off)
 148 #define uasm_i_beqz(buf, rs, off) uasm_i_beq(buf, rs, 0, off)
 149 #define uasm_i_beqzl(buf, rs, off) uasm_i_beql(buf, rs, 0, off)
 150 #define uasm_i_bnez(buf, rs, off) uasm_i_bne(buf, rs, 0, off)
 151 #define uasm_i_bnezl(buf, rs, off) uasm_i_bnel(buf, rs, 0, off)
 152 #define uasm_i_move(buf, a, b) UASM_i_ADDU(buf, a, 0, b)
 153 #define uasm_i_nop(buf) uasm_i_sll(buf, 0, 0, 0)
 154 #define uasm_i_ssnop(buf) uasm_i_sll(buf, 0, 0, 1)
 155 #define uasm_i_ehb(buf) uasm_i_sll(buf, 0, 0, 3)
 156
 157 /* Handle relocations. */
 158 struct uasm_reloc {
 159         u32 *addr;
 160         unsigned int type;
 161         int lab;
 162 };
 163
 164 /* This is zero so we can use zeroed label arrays. */
 165 #define UASM_LABEL_INVALID 0
 166
 167 void __init uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid);
 168 void __init
 169 uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab);
 170 void __init
 171 uasm_move_relocs(struct uasm_reloc *rel, u32 *first, u32 *end, long off);
 172 void __init
 173 uasm_move_labels(struct uasm_label *lab, u32 *first, u32 *end, long off);
 174 void __init
 175 uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab, u32 *first,
 176                   u32 *end, u32 *target);
 177 int __init uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr);
 178
 179 /* Convenience functions for labeled branches. */
 180 void __init
 181 uasm_il_bltz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 182 void __init uasm_il_b(u32 **p, struct uasm_reloc **r, int lid);
 183 void __init
 184 uasm_il_beqz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 185 void __init
 186 uasm_il_beqzl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 187 void __init
 188 uasm_il_bnez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 189 void __init
 190 uasm_il_bgezl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
 191 void __init
 192 uasm_il_bgez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);