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
6 * A small micro-assembler. It is intentionally kept simple, does only
7 * support a subset of instructions, and does not try to hide pipeline
8 * effects like branch delay slots.
10 * Copyright (C) 2004, 2005, 2006, 2008 Thiemo Seufer
11 * Copyright (C) 2005, 2007 Maciej W. Rozycki
12 * Copyright (C) 2006 Ralf Baechle (ralf@linux-mips.org)
13 * Copyright (C) 2012, 2013 MIPS Technologies, Inc. All rights reserved.
36 #define IMM_MASK 0xffff
38 #define JIMM_MASK 0x3ffffff
40 #define FUNC_MASK 0x3f
47 insn_addiu, insn_addu, insn_and, insn_andi, insn_bbit0, insn_bbit1,
48 insn_beq, insn_beql, insn_bgez, insn_bgezl, insn_bltz, insn_bltzl,
49 insn_bne, insn_cache, insn_daddiu, insn_daddu, insn_dins, insn_dinsm,
50 insn_divu, insn_dmfc0, insn_dmtc0, insn_drotr, insn_drotr32, insn_dsll,
51 insn_dsll32, insn_dsra, insn_dsrl, insn_dsrl32, insn_dsubu, insn_eret,
52 insn_ext, insn_ins, insn_j, insn_jal, insn_jalr, insn_jr, insn_ld,
53 insn_ldx, insn_lh, insn_ll, insn_lld, insn_lui, insn_lw, insn_lwx,
54 insn_mfc0, insn_mfhi, insn_mflo, insn_mtc0, insn_mul, insn_or,
55 insn_ori, insn_pref, insn_rfe, insn_rotr, insn_sc, insn_scd, insn_sd,
56 insn_sll, insn_sllv, insn_sltiu, insn_sltu, insn_sra, insn_srl,
57 insn_srlv, insn_subu, insn_sw, insn_sync, insn_syscall, insn_tlbp,
58 insn_tlbr, insn_tlbwi, insn_tlbwr, insn_wait, insn_wsbh, insn_xor,
59 insn_xori, insn_yield,
68 static inline u32 build_rs(u32 arg)
70 WARN(arg & ~RS_MASK, KERN_WARNING "Micro-assembler field overflow\n");
72 return (arg & RS_MASK) << RS_SH;
75 static inline u32 build_rt(u32 arg)
77 WARN(arg & ~RT_MASK, KERN_WARNING "Micro-assembler field overflow\n");
79 return (arg & RT_MASK) << RT_SH;
82 static inline u32 build_rd(u32 arg)
84 WARN(arg & ~RD_MASK, KERN_WARNING "Micro-assembler field overflow\n");
86 return (arg & RD_MASK) << RD_SH;
89 static inline u32 build_re(u32 arg)
91 WARN(arg & ~RE_MASK, KERN_WARNING "Micro-assembler field overflow\n");
93 return (arg & RE_MASK) << RE_SH;
96 static inline u32 build_simm(s32 arg)
98 WARN(arg > 0x7fff || arg < -0x8000,
99 KERN_WARNING "Micro-assembler field overflow\n");
104 static inline u32 build_uimm(u32 arg)
106 WARN(arg & ~IMM_MASK, KERN_WARNING "Micro-assembler field overflow\n");
108 return arg & IMM_MASK;
111 static inline u32 build_scimm(u32 arg)
113 WARN(arg & ~SCIMM_MASK,
114 KERN_WARNING "Micro-assembler field overflow\n");
116 return (arg & SCIMM_MASK) << SCIMM_SH;
119 static inline u32 build_func(u32 arg)
121 WARN(arg & ~FUNC_MASK, KERN_WARNING "Micro-assembler field overflow\n");
123 return arg & FUNC_MASK;
126 static inline u32 build_set(u32 arg)
128 WARN(arg & ~SET_MASK, KERN_WARNING "Micro-assembler field overflow\n");
130 return arg & SET_MASK;
133 static void build_insn(u32 **buf, enum opcode opc, ...);
135 #define I_u1u2u3(op) \
138 build_insn(buf, insn##op, a, b, c); \
140 UASM_EXPORT_SYMBOL(uasm_i##op);
142 #define I_u2u1u3(op) \
145 build_insn(buf, insn##op, b, a, c); \
147 UASM_EXPORT_SYMBOL(uasm_i##op);
149 #define I_u3u2u1(op) \
152 build_insn(buf, insn##op, c, b, a); \
154 UASM_EXPORT_SYMBOL(uasm_i##op);
156 #define I_u3u1u2(op) \
159 build_insn(buf, insn##op, b, c, a); \
161 UASM_EXPORT_SYMBOL(uasm_i##op);
163 #define I_u1u2s3(op) \
166 build_insn(buf, insn##op, a, b, c); \
168 UASM_EXPORT_SYMBOL(uasm_i##op);
170 #define I_u2s3u1(op) \
173 build_insn(buf, insn##op, c, a, b); \
175 UASM_EXPORT_SYMBOL(uasm_i##op);
177 #define I_u2u1s3(op) \
180 build_insn(buf, insn##op, b, a, c); \
182 UASM_EXPORT_SYMBOL(uasm_i##op);
184 #define I_u2u1msbu3(op) \
187 build_insn(buf, insn##op, b, a, c+d-1, c); \
189 UASM_EXPORT_SYMBOL(uasm_i##op);
191 #define I_u2u1msb32u3(op) \
194 build_insn(buf, insn##op, b, a, c+d-33, c); \
196 UASM_EXPORT_SYMBOL(uasm_i##op);
198 #define I_u2u1msbdu3(op) \
201 build_insn(buf, insn##op, b, a, d-1, c); \
203 UASM_EXPORT_SYMBOL(uasm_i##op);
208 build_insn(buf, insn##op, a, b); \
210 UASM_EXPORT_SYMBOL(uasm_i##op);
215 build_insn(buf, insn##op, b, a); \
217 UASM_EXPORT_SYMBOL(uasm_i##op);
222 build_insn(buf, insn##op, a, b); \
224 UASM_EXPORT_SYMBOL(uasm_i##op);
229 build_insn(buf, insn##op, a); \
231 UASM_EXPORT_SYMBOL(uasm_i##op);
236 build_insn(buf, insn##op); \
238 UASM_EXPORT_SYMBOL(uasm_i##op);
310 I_u2u1msb32u3(_dinsm);
317 #ifdef CONFIG_CPU_CAVIUM_OCTEON
318 #include <asm/octeon/octeon.h>
319 void ISAFUNC(uasm_i_pref)(u32 **buf, unsigned int a, signed int b,
322 if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X) && a <= 24 && a != 5)
324 * As per erratum Core-14449, replace prefetches 0-4,
325 * 6-24 with 'pref 28'.
327 build_insn(buf, insn_pref, c, 28, b);
329 build_insn(buf, insn_pref, c, a, b);
331 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_i_pref));
337 void ISAFUNC(uasm_build_label)(struct uasm_label **lab, u32 *addr, int lid)
343 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_build_label));
345 int ISAFUNC(uasm_in_compat_space_p)(long addr)
347 /* Is this address in 32bit compat space? */
349 return (((addr) & 0xffffffff00000000L) == 0xffffffff00000000L);
354 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_in_compat_space_p));
356 static int uasm_rel_highest(long val)
359 return ((((val + 0x800080008000L) >> 48) & 0xffff) ^ 0x8000) - 0x8000;
365 static int uasm_rel_higher(long val)
368 return ((((val + 0x80008000L) >> 32) & 0xffff) ^ 0x8000) - 0x8000;
374 int ISAFUNC(uasm_rel_hi)(long val)
376 return ((((val + 0x8000L) >> 16) & 0xffff) ^ 0x8000) - 0x8000;
378 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_rel_hi));
380 int ISAFUNC(uasm_rel_lo)(long val)
382 return ((val & 0xffff) ^ 0x8000) - 0x8000;
384 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_rel_lo));
386 void ISAFUNC(UASM_i_LA_mostly)(u32 **buf, unsigned int rs, long addr)
388 if (!ISAFUNC(uasm_in_compat_space_p)(addr)) {
389 ISAFUNC(uasm_i_lui)(buf, rs, uasm_rel_highest(addr));
390 if (uasm_rel_higher(addr))
391 ISAFUNC(uasm_i_daddiu)(buf, rs, rs, uasm_rel_higher(addr));
392 if (ISAFUNC(uasm_rel_hi(addr))) {
393 ISAFUNC(uasm_i_dsll)(buf, rs, rs, 16);
394 ISAFUNC(uasm_i_daddiu)(buf, rs, rs,
395 ISAFUNC(uasm_rel_hi)(addr));
396 ISAFUNC(uasm_i_dsll)(buf, rs, rs, 16);
398 ISAFUNC(uasm_i_dsll32)(buf, rs, rs, 0);
400 ISAFUNC(uasm_i_lui)(buf, rs, ISAFUNC(uasm_rel_hi(addr)));
402 UASM_EXPORT_SYMBOL(ISAFUNC(UASM_i_LA_mostly));
404 void ISAFUNC(UASM_i_LA)(u32 **buf, unsigned int rs, long addr)
406 ISAFUNC(UASM_i_LA_mostly)(buf, rs, addr);
407 if (ISAFUNC(uasm_rel_lo(addr))) {
408 if (!ISAFUNC(uasm_in_compat_space_p)(addr))
409 ISAFUNC(uasm_i_daddiu)(buf, rs, rs,
410 ISAFUNC(uasm_rel_lo(addr)));
412 ISAFUNC(uasm_i_addiu)(buf, rs, rs,
413 ISAFUNC(uasm_rel_lo(addr)));
416 UASM_EXPORT_SYMBOL(ISAFUNC(UASM_i_LA));
418 /* Handle relocations. */
419 void ISAFUNC(uasm_r_mips_pc16)(struct uasm_reloc **rel, u32 *addr, int lid)
422 (*rel)->type = R_MIPS_PC16;
426 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_r_mips_pc16));
428 static inline void __resolve_relocs(struct uasm_reloc *rel,
429 struct uasm_label *lab);
431 void ISAFUNC(uasm_resolve_relocs)(struct uasm_reloc *rel,
432 struct uasm_label *lab)
434 struct uasm_label *l;
436 for (; rel->lab != UASM_LABEL_INVALID; rel++)
437 for (l = lab; l->lab != UASM_LABEL_INVALID; l++)
438 if (rel->lab == l->lab)
439 __resolve_relocs(rel, l);
441 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_resolve_relocs));
443 void ISAFUNC(uasm_move_relocs)(struct uasm_reloc *rel, u32 *first, u32 *end,
446 for (; rel->lab != UASM_LABEL_INVALID; rel++)
447 if (rel->addr >= first && rel->addr < end)
450 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_move_relocs));
452 void ISAFUNC(uasm_move_labels)(struct uasm_label *lab, u32 *first, u32 *end,
455 for (; lab->lab != UASM_LABEL_INVALID; lab++)
456 if (lab->addr >= first && lab->addr < end)
459 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_move_labels));
461 void ISAFUNC(uasm_copy_handler)(struct uasm_reloc *rel, struct uasm_label *lab,
462 u32 *first, u32 *end, u32 *target)
464 long off = (long)(target - first);
466 memcpy(target, first, (end - first) * sizeof(u32));
468 ISAFUNC(uasm_move_relocs(rel, first, end, off));
469 ISAFUNC(uasm_move_labels(lab, first, end, off));
471 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_copy_handler));
473 int ISAFUNC(uasm_insn_has_bdelay)(struct uasm_reloc *rel, u32 *addr)
475 for (; rel->lab != UASM_LABEL_INVALID; rel++) {
476 if (rel->addr == addr
477 && (rel->type == R_MIPS_PC16
478 || rel->type == R_MIPS_26))
484 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_insn_has_bdelay));
486 /* Convenience functions for labeled branches. */
487 void ISAFUNC(uasm_il_bltz)(u32 **p, struct uasm_reloc **r, unsigned int reg,
490 uasm_r_mips_pc16(r, *p, lid);
491 ISAFUNC(uasm_i_bltz)(p, reg, 0);
493 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bltz));
495 void ISAFUNC(uasm_il_b)(u32 **p, struct uasm_reloc **r, int lid)
497 uasm_r_mips_pc16(r, *p, lid);
498 ISAFUNC(uasm_i_b)(p, 0);
500 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_b));
502 void ISAFUNC(uasm_il_beq)(u32 **p, struct uasm_reloc **r, unsigned int r1,
503 unsigned int r2, int lid)
505 uasm_r_mips_pc16(r, *p, lid);
506 ISAFUNC(uasm_i_beq)(p, r1, r2, 0);
508 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beq));
510 void ISAFUNC(uasm_il_beqz)(u32 **p, struct uasm_reloc **r, unsigned int reg,
513 uasm_r_mips_pc16(r, *p, lid);
514 ISAFUNC(uasm_i_beqz)(p, reg, 0);
516 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beqz));
518 void ISAFUNC(uasm_il_beqzl)(u32 **p, struct uasm_reloc **r, unsigned int reg,
521 uasm_r_mips_pc16(r, *p, lid);
522 ISAFUNC(uasm_i_beqzl)(p, reg, 0);
524 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beqzl));
526 void ISAFUNC(uasm_il_bne)(u32 **p, struct uasm_reloc **r, unsigned int reg1,
527 unsigned int reg2, int lid)
529 uasm_r_mips_pc16(r, *p, lid);
530 ISAFUNC(uasm_i_bne)(p, reg1, reg2, 0);
532 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bne));
534 void ISAFUNC(uasm_il_bnez)(u32 **p, struct uasm_reloc **r, unsigned int reg,
537 uasm_r_mips_pc16(r, *p, lid);
538 ISAFUNC(uasm_i_bnez)(p, reg, 0);
540 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bnez));
542 void ISAFUNC(uasm_il_bgezl)(u32 **p, struct uasm_reloc **r, unsigned int reg,
545 uasm_r_mips_pc16(r, *p, lid);
546 ISAFUNC(uasm_i_bgezl)(p, reg, 0);
548 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bgezl));
550 void ISAFUNC(uasm_il_bgez)(u32 **p, struct uasm_reloc **r, unsigned int reg,
553 uasm_r_mips_pc16(r, *p, lid);
554 ISAFUNC(uasm_i_bgez)(p, reg, 0);
556 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bgez));
558 void ISAFUNC(uasm_il_bbit0)(u32 **p, struct uasm_reloc **r, unsigned int reg,
559 unsigned int bit, int lid)
561 uasm_r_mips_pc16(r, *p, lid);
562 ISAFUNC(uasm_i_bbit0)(p, reg, bit, 0);
564 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bbit0));
566 void ISAFUNC(uasm_il_bbit1)(u32 **p, struct uasm_reloc **r, unsigned int reg,
567 unsigned int bit, int lid)
569 uasm_r_mips_pc16(r, *p, lid);
570 ISAFUNC(uasm_i_bbit1)(p, reg, bit, 0);
572 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bbit1));