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, 2013 MIPS Technologies, Inc. All rights reserved. 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 _UASM_ISA_CLASSIC 0 26 #define _UASM_ISA_MICROMIPS 1 27 28 #ifndef UASM_ISA 29 #define UASM_ISA _UASM_ISA_CLASSIC 30 #endif 31 32 #if (UASM_ISA == _UASM_ISA_CLASSIC) 33 #define ISAOPC(op) uasm_i##op 34 #define ISAFUNC(x) x 35 #elif (UASM_ISA == _UASM_ISA_MICROMIPS) 36 #define ISAOPC(op) MM_uasm_i##op 37 #define ISAFUNC(x) MM_##x 38 #else 39 #error Unsupported micro-assembler ISA!!! 40 #endif 41 42 #define Ip_u1u2u3(op) \ 43 void __uasminit \ 44 ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c) 45 46 #define Ip_u2u1u3(op) \ 47 void __uasminit \ 48 ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c) 49 50 #define Ip_u3u1u2(op) \ 51 void __uasminit \ 52 ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c) 53 54 #define Ip_u1u2s3(op) \ 55 void __uasminit \ 56 ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, signed int c) 57 58 #define Ip_u2s3u1(op) \ 59 void __uasminit \ 60 ISAOPC(op)(u32 **buf, unsigned int a, signed int b, unsigned int c) 61 62 #define Ip_u2u1s3(op) \ 63 void __uasminit \ 64 ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, signed int c) 65 66 #define Ip_u2u1msbu3(op) \ 67 void __uasminit \ 68 ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c, \ 69 unsigned int d) 70 71 #define Ip_u1u2(op) \ 72 void __uasminit ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b) 73 74 #define Ip_u1s2(op) \ 75 void __uasminit ISAOPC(op)(u32 **buf, unsigned int a, signed int b) 76 77 #define Ip_u1(op) void __uasminit ISAOPC(op)(u32 **buf, unsigned int a) 78 79 #define Ip_0(op) void __uasminit ISAOPC(op)(u32 **buf) 80 81 Ip_u2u1s3(_addiu); 82 Ip_u3u1u2(_addu); 83 Ip_u3u1u2(_and); 84 Ip_u2u1u3(_andi); 85 Ip_u1u2s3(_bbit0); 86 Ip_u1u2s3(_bbit1); 87 Ip_u1u2s3(_beq); 88 Ip_u1u2s3(_beql); 89 Ip_u1s2(_bgez); 90 Ip_u1s2(_bgezl); 91 Ip_u1s2(_bltz); 92 Ip_u1s2(_bltzl); 93 Ip_u1u2s3(_bne); 94 Ip_u2s3u1(_cache); 95 Ip_u2u1s3(_daddiu); 96 Ip_u3u1u2(_daddu); 97 Ip_u2u1msbu3(_dins); 98 Ip_u2u1msbu3(_dinsm); 99 Ip_u1u2u3(_dmfc0); 100 Ip_u1u2u3(_dmtc0); 101 Ip_u2u1u3(_drotr); 102 Ip_u2u1u3(_drotr32); 103 Ip_u2u1u3(_dsll); 104 Ip_u2u1u3(_dsll32); 105 Ip_u2u1u3(_dsra); 106 Ip_u2u1u3(_dsrl); 107 Ip_u2u1u3(_dsrl32); 108 Ip_u3u1u2(_dsubu); 109 Ip_0(_eret); 110 Ip_u2u1msbu3(_ext); 111 Ip_u2u1msbu3(_ins); 112 Ip_u1(_j); 113 Ip_u1(_jal); 114 Ip_u1(_jr); 115 Ip_u2s3u1(_ld); 116 Ip_u3u1u2(_ldx); 117 Ip_u2s3u1(_ll); 118 Ip_u2s3u1(_lld); 119 Ip_u1s2(_lui); 120 Ip_u2s3u1(_lw); 121 Ip_u3u1u2(_lwx); 122 Ip_u1u2u3(_mfc0); 123 Ip_u1u2u3(_mtc0); 124 Ip_u3u1u2(_or); 125 Ip_u2u1u3(_ori); 126 Ip_u2s3u1(_pref); 127 Ip_0(_rfe); 128 Ip_u2u1u3(_rotr); 129 Ip_u2s3u1(_sc); 130 Ip_u2s3u1(_scd); 131 Ip_u2s3u1(_sd); 132 Ip_u2u1u3(_sll); 133 Ip_u2u1u3(_sra); 134 Ip_u2u1u3(_srl); 135 Ip_u3u1u2(_subu); 136 Ip_u2s3u1(_sw); 137 Ip_u1(_syscall); 138 Ip_0(_tlbp); 139 Ip_0(_tlbr); 140 Ip_0(_tlbwi); 141 Ip_0(_tlbwr); 142 Ip_u3u1u2(_xor); 143 Ip_u2u1u3(_xori); 144 145 146 /* Handle labels. */ 147 struct uasm_label { 148 u32 *addr; 149 int lab; 150 }; 151 152 void __uasminit ISAFUNC(uasm_build_label)(struct uasm_label **lab, u32 *addr, 153 int lid); 154 #ifdef CONFIG_64BIT 155 int ISAFUNC(uasm_in_compat_space_p)(long addr); 156 #endif 157 int ISAFUNC(uasm_rel_hi)(long val); 158 int ISAFUNC(uasm_rel_lo)(long val); 159 void ISAFUNC(UASM_i_LA_mostly)(u32 **buf, unsigned int rs, long addr); 160 void ISAFUNC(UASM_i_LA)(u32 **buf, unsigned int rs, long addr); 161 162 #define UASM_L_LA(lb) \ 163 static inline void __uasminit uasm_l##lb(struct uasm_label **lab, u32 *addr) \ 164 { \ 165 uasm_build_label(lab, addr, label##lb); \ 166 } 167 168 /* convenience macros for instructions */ 169 #ifdef CONFIG_64BIT 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_LL(buf, rs, rt, off) uasm_i_lld(buf, rs, rt, off) 173 # define UASM_i_LW(buf, rs, rt, off) uasm_i_ld(buf, rs, rt, off) 174 # define UASM_i_LWX(buf, rs, rt, rd) uasm_i_ldx(buf, rs, rt, rd) 175 # define UASM_i_MFC0(buf, rt, rd...) uasm_i_dmfc0(buf, rt, rd) 176 # define UASM_i_MTC0(buf, rt, rd...) uasm_i_dmtc0(buf, rt, rd) 177 # define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_drotr(buf, rs, rt, sh) 178 # define UASM_i_SC(buf, rs, rt, off) uasm_i_scd(buf, rs, rt, off) 179 # define UASM_i_SLL(buf, rs, rt, sh) uasm_i_dsll(buf, rs, rt, sh) 180 # define UASM_i_SRA(buf, rs, rt, sh) uasm_i_dsra(buf, rs, rt, sh) 181 # define UASM_i_SRL(buf, rs, rt, sh) uasm_i_dsrl(buf, rs, rt, sh) 182 # define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_dsrl_safe(buf, rs, rt, sh) 183 # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_dsubu(buf, rs, rt, rd) 184 # define UASM_i_SW(buf, rs, rt, off) uasm_i_sd(buf, rs, rt, off) 185 #else 186 # define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_addiu(buf, rs, rt, val) 187 # define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_addu(buf, rs, rt, rd) 188 # define UASM_i_LL(buf, rs, rt, off) uasm_i_ll(buf, rs, rt, off) 189 # define UASM_i_LW(buf, rs, rt, off) uasm_i_lw(buf, rs, rt, off) 190 # define UASM_i_LWX(buf, rs, rt, rd) uasm_i_lwx(buf, rs, rt, rd) 191 # define UASM_i_MFC0(buf, rt, rd...) uasm_i_mfc0(buf, rt, rd) 192 # define UASM_i_MTC0(buf, rt, rd...) uasm_i_mtc0(buf, rt, rd) 193 # define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_rotr(buf, rs, rt, sh) 194 # define UASM_i_SC(buf, rs, rt, off) uasm_i_sc(buf, rs, rt, off) 195 # define UASM_i_SLL(buf, rs, rt, sh) uasm_i_sll(buf, rs, rt, sh) 196 # define UASM_i_SRA(buf, rs, rt, sh) uasm_i_sra(buf, rs, rt, sh) 197 # define UASM_i_SRL(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh) 198 # define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh) 199 # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_subu(buf, rs, rt, rd) 200 # define UASM_i_SW(buf, rs, rt, off) uasm_i_sw(buf, rs, rt, off) 201 #endif 202 203 #define uasm_i_b(buf, off) uasm_i_beq(buf, 0, 0, off) 204 #define uasm_i_beqz(buf, rs, off) uasm_i_beq(buf, rs, 0, off) 205 #define uasm_i_beqzl(buf, rs, off) uasm_i_beql(buf, rs, 0, off) 206 #define uasm_i_bnez(buf, rs, off) uasm_i_bne(buf, rs, 0, off) 207 #define uasm_i_bnezl(buf, rs, off) uasm_i_bnel(buf, rs, 0, off) 208 #define uasm_i_ehb(buf) uasm_i_sll(buf, 0, 0, 3) 209 #define uasm_i_move(buf, a, b) UASM_i_ADDU(buf, a, 0, b) 210 #define uasm_i_nop(buf) uasm_i_sll(buf, 0, 0, 0) 211 #define uasm_i_ssnop(buf) uasm_i_sll(buf, 0, 0, 1) 212 213 static inline void uasm_i_drotr_safe(u32 **p, unsigned int a1, 214 unsigned int a2, unsigned int a3) 215 { 216 if (a3 < 32) 217 ISAOPC(_drotr)(p, a1, a2, a3); 218 else 219 ISAOPC(_drotr32)(p, a1, a2, a3 - 32); 220 } 221 222 static inline void uasm_i_dsll_safe(u32 **p, unsigned int a1, 223 unsigned int a2, unsigned int a3) 224 { 225 if (a3 < 32) 226 ISAOPC(_dsll)(p, a1, a2, a3); 227 else 228 ISAOPC(_dsll32)(p, a1, a2, a3 - 32); 229 } 230 231 static inline void uasm_i_dsrl_safe(u32 **p, unsigned int a1, 232 unsigned int a2, unsigned int a3) 233 { 234 if (a3 < 32) 235 ISAOPC(_dsrl)(p, a1, a2, a3); 236 else 237 ISAOPC(_dsrl32)(p, a1, a2, a3 - 32); 238 } 239 240 /* Handle relocations. */ 241 struct uasm_reloc { 242 u32 *addr; 243 unsigned int type; 244 int lab; 245 }; 246 247 /* This is zero so we can use zeroed label arrays. */ 248 #define UASM_LABEL_INVALID 0 249 250 void uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid); 251 void uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab); 252 void uasm_move_relocs(struct uasm_reloc *rel, u32 *first, u32 *end, long off); 253 void uasm_move_labels(struct uasm_label *lab, u32 *first, u32 *end, long off); 254 void uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab, 255 u32 *first, u32 *end, u32 *target); 256 int uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr); 257 258 /* Convenience functions for labeled branches. */ 259 void uasm_il_b(u32 **p, struct uasm_reloc **r, int lid); 260 void uasm_il_bbit0(u32 **p, struct uasm_reloc **r, unsigned int reg, 261 unsigned int bit, int lid); 262 void uasm_il_bbit1(u32 **p, struct uasm_reloc **r, unsigned int reg, 263 unsigned int bit, int lid); 264 void uasm_il_beqz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid); 265 void uasm_il_beqzl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid); 266 void uasm_il_bgezl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid); 267 void uasm_il_bgez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid); 268 void uasm_il_bltz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid); 269 void uasm_il_bne(u32 **p, struct uasm_reloc **r, unsigned int reg1, 270 unsigned int reg2, int lid); 271 void uasm_il_bnez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid); 272