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.
37 #define IMM_MASK 0xffff
39 #define JIMM_MASK 0x3ffffff
41 #define FUNC_MASK 0x3f
46 #define SIMM9_MASK 0x1ff
50 insn_addiu, insn_addu, insn_and, insn_andi, insn_bbit0, insn_bbit1,
51 insn_beq, insn_beql, insn_bgez, insn_bgezl, insn_bltz, insn_bltzl,
52 insn_bne, insn_cache, insn_cfc1, insn_cfcmsa, insn_ctc1, insn_ctcmsa,
53 insn_daddiu, insn_daddu, insn_dins, insn_dinsm, insn_divu, insn_dmfc0,
54 insn_dmtc0, insn_drotr, insn_drotr32, insn_dsll, insn_dsll32, insn_dsra,
55 insn_dsrl, insn_dsrl32, insn_dsubu, insn_eret, insn_ext, insn_ins,
56 insn_j, insn_jal, insn_jalr, insn_jr, insn_lb, insn_ld, insn_ldx,
57 insn_lh, insn_ll, insn_lld, insn_lui, insn_lw, insn_lwx, insn_mfc0,
58 insn_mfhc0, insn_mfhi, insn_mflo, insn_mtc0, insn_mthc0, insn_mul,
59 insn_or, insn_ori, insn_pref, insn_rfe, insn_rotr, insn_sc, insn_scd,
60 insn_sd, insn_sll, insn_sllv, insn_slt, insn_sltiu, insn_sltu, insn_sra,
61 insn_srl, insn_srlv, insn_subu, insn_sw, insn_sync, insn_syscall,
62 insn_tlbp, insn_tlbr, insn_tlbwi, insn_tlbwr, insn_wait, insn_wsbh,
63 insn_xor, insn_xori, insn_yield, insn_lddir, insn_ldpte,
72 static inline u32 build_rs(u32 arg)
74 WARN(arg & ~RS_MASK, KERN_WARNING "Micro-assembler field overflow\n");
76 return (arg & RS_MASK) << RS_SH;
79 static inline u32 build_rt(u32 arg)
81 WARN(arg & ~RT_MASK, KERN_WARNING "Micro-assembler field overflow\n");
83 return (arg & RT_MASK) << RT_SH;
86 static inline u32 build_rd(u32 arg)
88 WARN(arg & ~RD_MASK, KERN_WARNING "Micro-assembler field overflow\n");
90 return (arg & RD_MASK) << RD_SH;
93 static inline u32 build_re(u32 arg)
95 WARN(arg & ~RE_MASK, KERN_WARNING "Micro-assembler field overflow\n");
97 return (arg & RE_MASK) << RE_SH;
100 static inline u32 build_simm(s32 arg)
102 WARN(arg > 0x7fff || arg < -0x8000,
103 KERN_WARNING "Micro-assembler field overflow\n");
108 static inline u32 build_uimm(u32 arg)
110 WARN(arg & ~IMM_MASK, KERN_WARNING "Micro-assembler field overflow\n");
112 return arg & IMM_MASK;
115 static inline u32 build_scimm(u32 arg)
117 WARN(arg & ~SCIMM_MASK,
118 KERN_WARNING "Micro-assembler field overflow\n");
120 return (arg & SCIMM_MASK) << SCIMM_SH;
123 static inline u32 build_scimm9(s32 arg)
125 WARN((arg > 0xff || arg < -0x100),
126 KERN_WARNING "Micro-assembler field overflow\n");
128 return (arg & SIMM9_MASK) << SIMM9_SH;
131 static inline u32 build_func(u32 arg)
133 WARN(arg & ~FUNC_MASK, KERN_WARNING "Micro-assembler field overflow\n");
135 return arg & FUNC_MASK;
138 static inline u32 build_set(u32 arg)
140 WARN(arg & ~SET_MASK, KERN_WARNING "Micro-assembler field overflow\n");
142 return arg & SET_MASK;
145 static void build_insn(u32 **buf, enum opcode opc, ...);
147 #define I_u1u2u3(op) \
150 build_insn(buf, insn##op, a, b, c); \
152 UASM_EXPORT_SYMBOL(uasm_i##op);
154 #define I_s3s1s2(op) \
157 build_insn(buf, insn##op, b, c, a); \
159 UASM_EXPORT_SYMBOL(uasm_i##op);
161 #define I_u2u1u3(op) \
164 build_insn(buf, insn##op, b, a, c); \
166 UASM_EXPORT_SYMBOL(uasm_i##op);
168 #define I_u3u2u1(op) \
171 build_insn(buf, insn##op, c, b, a); \
173 UASM_EXPORT_SYMBOL(uasm_i##op);
175 #define I_u3u1u2(op) \
178 build_insn(buf, insn##op, b, c, a); \
180 UASM_EXPORT_SYMBOL(uasm_i##op);
182 #define I_u1u2s3(op) \
185 build_insn(buf, insn##op, a, b, c); \
187 UASM_EXPORT_SYMBOL(uasm_i##op);
189 #define I_u2s3u1(op) \
192 build_insn(buf, insn##op, c, a, b); \
194 UASM_EXPORT_SYMBOL(uasm_i##op);
196 #define I_u2u1s3(op) \
199 build_insn(buf, insn##op, b, a, c); \
201 UASM_EXPORT_SYMBOL(uasm_i##op);
203 #define I_u2u1msbu3(op) \
206 build_insn(buf, insn##op, b, a, c+d-1, c); \
208 UASM_EXPORT_SYMBOL(uasm_i##op);
210 #define I_u2u1msb32u3(op) \
213 build_insn(buf, insn##op, b, a, c+d-33, c); \
215 UASM_EXPORT_SYMBOL(uasm_i##op);
217 #define I_u2u1msbdu3(op) \
220 build_insn(buf, insn##op, b, a, d-1, c); \
222 UASM_EXPORT_SYMBOL(uasm_i##op);
227 build_insn(buf, insn##op, a, b); \
229 UASM_EXPORT_SYMBOL(uasm_i##op);
234 build_insn(buf, insn##op, b, a); \
236 UASM_EXPORT_SYMBOL(uasm_i##op);
241 build_insn(buf, insn##op, a, b); \
243 UASM_EXPORT_SYMBOL(uasm_i##op);
248 build_insn(buf, insn##op, a); \
250 UASM_EXPORT_SYMBOL(uasm_i##op);
255 build_insn(buf, insn##op); \
257 UASM_EXPORT_SYMBOL(uasm_i##op);
337 I_u2u1msb32u3(_dinsm);
346 #ifdef CONFIG_CPU_CAVIUM_OCTEON
347 #include <asm/octeon/octeon.h>
348 void ISAFUNC(uasm_i_pref)(u32 **buf, unsigned int a, signed int b,
351 if (CAVIUM_OCTEON_DCACHE_PREFETCH_WAR && a <= 24 && a != 5)
353 * As per erratum Core-14449, replace prefetches 0-4,
354 * 6-24 with 'pref 28'.
356 build_insn(buf, insn_pref, c, 28, b);
358 build_insn(buf, insn_pref, c, a, b);
360 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_i_pref));
366 void ISAFUNC(uasm_build_label)(struct uasm_label **lab, u32 *addr, int lid)
372 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_build_label));
374 int ISAFUNC(uasm_in_compat_space_p)(long addr)
376 /* Is this address in 32bit compat space? */
378 return (((addr) & 0xffffffff00000000L) == 0xffffffff00000000L);
383 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_in_compat_space_p));
385 static int uasm_rel_highest(long val)
388 return ((((val + 0x800080008000L) >> 48) & 0xffff) ^ 0x8000) - 0x8000;
394 static int uasm_rel_higher(long val)
397 return ((((val + 0x80008000L) >> 32) & 0xffff) ^ 0x8000) - 0x8000;
403 int ISAFUNC(uasm_rel_hi)(long val)
405 return ((((val + 0x8000L) >> 16) & 0xffff) ^ 0x8000) - 0x8000;
407 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_rel_hi));
409 int ISAFUNC(uasm_rel_lo)(long val)
411 return ((val & 0xffff) ^ 0x8000) - 0x8000;
413 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_rel_lo));
415 void ISAFUNC(UASM_i_LA_mostly)(u32 **buf, unsigned int rs, long addr)
417 if (!ISAFUNC(uasm_in_compat_space_p)(addr)) {
418 ISAFUNC(uasm_i_lui)(buf, rs, uasm_rel_highest(addr));
419 if (uasm_rel_higher(addr))
420 ISAFUNC(uasm_i_daddiu)(buf, rs, rs, uasm_rel_higher(addr));
421 if (ISAFUNC(uasm_rel_hi(addr))) {
422 ISAFUNC(uasm_i_dsll)(buf, rs, rs, 16);
423 ISAFUNC(uasm_i_daddiu)(buf, rs, rs,
424 ISAFUNC(uasm_rel_hi)(addr));
425 ISAFUNC(uasm_i_dsll)(buf, rs, rs, 16);
427 ISAFUNC(uasm_i_dsll32)(buf, rs, rs, 0);
429 ISAFUNC(uasm_i_lui)(buf, rs, ISAFUNC(uasm_rel_hi(addr)));
431 UASM_EXPORT_SYMBOL(ISAFUNC(UASM_i_LA_mostly));
433 void ISAFUNC(UASM_i_LA)(u32 **buf, unsigned int rs, long addr)
435 ISAFUNC(UASM_i_LA_mostly)(buf, rs, addr);
436 if (ISAFUNC(uasm_rel_lo(addr))) {
437 if (!ISAFUNC(uasm_in_compat_space_p)(addr))
438 ISAFUNC(uasm_i_daddiu)(buf, rs, rs,
439 ISAFUNC(uasm_rel_lo(addr)));
441 ISAFUNC(uasm_i_addiu)(buf, rs, rs,
442 ISAFUNC(uasm_rel_lo(addr)));
445 UASM_EXPORT_SYMBOL(ISAFUNC(UASM_i_LA));
447 /* Handle relocations. */
448 void ISAFUNC(uasm_r_mips_pc16)(struct uasm_reloc **rel, u32 *addr, int lid)
451 (*rel)->type = R_MIPS_PC16;
455 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_r_mips_pc16));
457 static inline void __resolve_relocs(struct uasm_reloc *rel,
458 struct uasm_label *lab);
460 void ISAFUNC(uasm_resolve_relocs)(struct uasm_reloc *rel,
461 struct uasm_label *lab)
463 struct uasm_label *l;
465 for (; rel->lab != UASM_LABEL_INVALID; rel++)
466 for (l = lab; l->lab != UASM_LABEL_INVALID; l++)
467 if (rel->lab == l->lab)
468 __resolve_relocs(rel, l);
470 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_resolve_relocs));
472 void ISAFUNC(uasm_move_relocs)(struct uasm_reloc *rel, u32 *first, u32 *end,
475 for (; rel->lab != UASM_LABEL_INVALID; rel++)
476 if (rel->addr >= first && rel->addr < end)
479 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_move_relocs));
481 void ISAFUNC(uasm_move_labels)(struct uasm_label *lab, u32 *first, u32 *end,
484 for (; lab->lab != UASM_LABEL_INVALID; lab++)
485 if (lab->addr >= first && lab->addr < end)
488 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_move_labels));
490 void ISAFUNC(uasm_copy_handler)(struct uasm_reloc *rel, struct uasm_label *lab,
491 u32 *first, u32 *end, u32 *target)
493 long off = (long)(target - first);
495 memcpy(target, first, (end - first) * sizeof(u32));
497 ISAFUNC(uasm_move_relocs(rel, first, end, off));
498 ISAFUNC(uasm_move_labels(lab, first, end, off));
500 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_copy_handler));
502 int ISAFUNC(uasm_insn_has_bdelay)(struct uasm_reloc *rel, u32 *addr)
504 for (; rel->lab != UASM_LABEL_INVALID; rel++) {
505 if (rel->addr == addr
506 && (rel->type == R_MIPS_PC16
507 || rel->type == R_MIPS_26))
513 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_insn_has_bdelay));
515 /* Convenience functions for labeled branches. */
516 void ISAFUNC(uasm_il_bltz)(u32 **p, struct uasm_reloc **r, unsigned int reg,
519 uasm_r_mips_pc16(r, *p, lid);
520 ISAFUNC(uasm_i_bltz)(p, reg, 0);
522 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bltz));
524 void ISAFUNC(uasm_il_b)(u32 **p, struct uasm_reloc **r, int lid)
526 uasm_r_mips_pc16(r, *p, lid);
527 ISAFUNC(uasm_i_b)(p, 0);
529 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_b));
531 void ISAFUNC(uasm_il_beq)(u32 **p, struct uasm_reloc **r, unsigned int r1,
532 unsigned int r2, int lid)
534 uasm_r_mips_pc16(r, *p, lid);
535 ISAFUNC(uasm_i_beq)(p, r1, r2, 0);
537 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beq));
539 void ISAFUNC(uasm_il_beqz)(u32 **p, struct uasm_reloc **r, unsigned int reg,
542 uasm_r_mips_pc16(r, *p, lid);
543 ISAFUNC(uasm_i_beqz)(p, reg, 0);
545 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beqz));
547 void ISAFUNC(uasm_il_beqzl)(u32 **p, struct uasm_reloc **r, unsigned int reg,
550 uasm_r_mips_pc16(r, *p, lid);
551 ISAFUNC(uasm_i_beqzl)(p, reg, 0);
553 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beqzl));
555 void ISAFUNC(uasm_il_bne)(u32 **p, struct uasm_reloc **r, unsigned int reg1,
556 unsigned int reg2, int lid)
558 uasm_r_mips_pc16(r, *p, lid);
559 ISAFUNC(uasm_i_bne)(p, reg1, reg2, 0);
561 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bne));
563 void ISAFUNC(uasm_il_bnez)(u32 **p, struct uasm_reloc **r, unsigned int reg,
566 uasm_r_mips_pc16(r, *p, lid);
567 ISAFUNC(uasm_i_bnez)(p, reg, 0);
569 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bnez));
571 void ISAFUNC(uasm_il_bgezl)(u32 **p, struct uasm_reloc **r, unsigned int reg,
574 uasm_r_mips_pc16(r, *p, lid);
575 ISAFUNC(uasm_i_bgezl)(p, reg, 0);
577 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bgezl));
579 void ISAFUNC(uasm_il_bgez)(u32 **p, struct uasm_reloc **r, unsigned int reg,
582 uasm_r_mips_pc16(r, *p, lid);
583 ISAFUNC(uasm_i_bgez)(p, reg, 0);
585 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bgez));
587 void ISAFUNC(uasm_il_bbit0)(u32 **p, struct uasm_reloc **r, unsigned int reg,
588 unsigned int bit, int lid)
590 uasm_r_mips_pc16(r, *p, lid);
591 ISAFUNC(uasm_i_bbit0)(p, reg, bit, 0);
593 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bbit0));
595 void ISAFUNC(uasm_il_bbit1)(u32 **p, struct uasm_reloc **r, unsigned int reg,
596 unsigned int bit, int lid)
598 uasm_r_mips_pc16(r, *p, lid);
599 ISAFUNC(uasm_i_bbit1)(p, reg, bit, 0);
601 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bbit1));