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_ll, insn_lld, insn_lui, insn_lw, insn_lwx, insn_mfc0,
54 insn_mfhi, insn_mtc0, insn_or, insn_ori, insn_pref, insn_rfe,
55 insn_rotr, insn_sc, insn_scd, insn_sd, insn_sll, insn_sllv, insn_sltiu,
56 insn_sltu, insn_sra, insn_srl, insn_srlv, insn_subu, insn_sw, insn_sync,
57 insn_syscall, insn_tlbp, insn_tlbr, insn_tlbwi, insn_tlbwr, insn_wait,
58 insn_wsbh, insn_xor, insn_xori, insn_yield,
67 static inline u32 build_rs(u32 arg)
69 WARN(arg & ~RS_MASK, KERN_WARNING "Micro-assembler field overflow\n");
71 return (arg & RS_MASK) << RS_SH;
74 static inline u32 build_rt(u32 arg)
76 WARN(arg & ~RT_MASK, KERN_WARNING "Micro-assembler field overflow\n");
78 return (arg & RT_MASK) << RT_SH;
81 static inline u32 build_rd(u32 arg)
83 WARN(arg & ~RD_MASK, KERN_WARNING "Micro-assembler field overflow\n");
85 return (arg & RD_MASK) << RD_SH;
88 static inline u32 build_re(u32 arg)
90 WARN(arg & ~RE_MASK, KERN_WARNING "Micro-assembler field overflow\n");
92 return (arg & RE_MASK) << RE_SH;
95 static inline u32 build_simm(s32 arg)
97 WARN(arg > 0x7fff || arg < -0x8000,
98 KERN_WARNING "Micro-assembler field overflow\n");
103 static inline u32 build_uimm(u32 arg)
105 WARN(arg & ~IMM_MASK, KERN_WARNING "Micro-assembler field overflow\n");
107 return arg & IMM_MASK;
110 static inline u32 build_scimm(u32 arg)
112 WARN(arg & ~SCIMM_MASK,
113 KERN_WARNING "Micro-assembler field overflow\n");
115 return (arg & SCIMM_MASK) << SCIMM_SH;
118 static inline u32 build_func(u32 arg)
120 WARN(arg & ~FUNC_MASK, KERN_WARNING "Micro-assembler field overflow\n");
122 return arg & FUNC_MASK;
125 static inline u32 build_set(u32 arg)
127 WARN(arg & ~SET_MASK, KERN_WARNING "Micro-assembler field overflow\n");
129 return arg & SET_MASK;
132 static void build_insn(u32 **buf, enum opcode opc, ...);
134 #define I_u1u2u3(op) \
137 build_insn(buf, insn##op, a, b, c); \
139 UASM_EXPORT_SYMBOL(uasm_i##op);
141 #define I_u2u1u3(op) \
144 build_insn(buf, insn##op, b, a, c); \
146 UASM_EXPORT_SYMBOL(uasm_i##op);
148 #define I_u3u2u1(op) \
151 build_insn(buf, insn##op, c, b, a); \
153 UASM_EXPORT_SYMBOL(uasm_i##op);
155 #define I_u3u1u2(op) \
158 build_insn(buf, insn##op, b, c, a); \
160 UASM_EXPORT_SYMBOL(uasm_i##op);
162 #define I_u1u2s3(op) \
165 build_insn(buf, insn##op, a, b, c); \
167 UASM_EXPORT_SYMBOL(uasm_i##op);
169 #define I_u2s3u1(op) \
172 build_insn(buf, insn##op, c, a, b); \
174 UASM_EXPORT_SYMBOL(uasm_i##op);
176 #define I_u2u1s3(op) \
179 build_insn(buf, insn##op, b, a, c); \
181 UASM_EXPORT_SYMBOL(uasm_i##op);
183 #define I_u2u1msbu3(op) \
186 build_insn(buf, insn##op, b, a, c+d-1, c); \
188 UASM_EXPORT_SYMBOL(uasm_i##op);
190 #define I_u2u1msb32u3(op) \
193 build_insn(buf, insn##op, b, a, c+d-33, c); \
195 UASM_EXPORT_SYMBOL(uasm_i##op);
197 #define I_u2u1msbdu3(op) \
200 build_insn(buf, insn##op, b, a, d-1, c); \
202 UASM_EXPORT_SYMBOL(uasm_i##op);
207 build_insn(buf, insn##op, a, b); \
209 UASM_EXPORT_SYMBOL(uasm_i##op);
214 build_insn(buf, insn##op, b, a); \
216 UASM_EXPORT_SYMBOL(uasm_i##op);
221 build_insn(buf, insn##op, a, b); \
223 UASM_EXPORT_SYMBOL(uasm_i##op);
228 build_insn(buf, insn##op, a); \
230 UASM_EXPORT_SYMBOL(uasm_i##op);
235 build_insn(buf, insn##op); \
237 UASM_EXPORT_SYMBOL(uasm_i##op);
306 I_u2u1msb32u3(_dinsm);
313 #ifdef CONFIG_CPU_CAVIUM_OCTEON
314 #include <asm/octeon/octeon.h>
315 void ISAFUNC(uasm_i_pref)(u32 **buf, unsigned int a, signed int b,
318 if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X) && a <= 24 && a != 5)
320 * As per erratum Core-14449, replace prefetches 0-4,
321 * 6-24 with 'pref 28'.
323 build_insn(buf, insn_pref, c, 28, b);
325 build_insn(buf, insn_pref, c, a, b);
327 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_i_pref));
333 void ISAFUNC(uasm_build_label)(struct uasm_label **lab, u32 *addr, int lid)
339 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_build_label));
341 int ISAFUNC(uasm_in_compat_space_p)(long addr)
343 /* Is this address in 32bit compat space? */
345 return (((addr) & 0xffffffff00000000L) == 0xffffffff00000000L);
350 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_in_compat_space_p));
352 static int uasm_rel_highest(long val)
355 return ((((val + 0x800080008000L) >> 48) & 0xffff) ^ 0x8000) - 0x8000;
361 static int uasm_rel_higher(long val)
364 return ((((val + 0x80008000L) >> 32) & 0xffff) ^ 0x8000) - 0x8000;
370 int ISAFUNC(uasm_rel_hi)(long val)
372 return ((((val + 0x8000L) >> 16) & 0xffff) ^ 0x8000) - 0x8000;
374 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_rel_hi));
376 int ISAFUNC(uasm_rel_lo)(long val)
378 return ((val & 0xffff) ^ 0x8000) - 0x8000;
380 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_rel_lo));
382 void ISAFUNC(UASM_i_LA_mostly)(u32 **buf, unsigned int rs, long addr)
384 if (!ISAFUNC(uasm_in_compat_space_p)(addr)) {
385 ISAFUNC(uasm_i_lui)(buf, rs, uasm_rel_highest(addr));
386 if (uasm_rel_higher(addr))
387 ISAFUNC(uasm_i_daddiu)(buf, rs, rs, uasm_rel_higher(addr));
388 if (ISAFUNC(uasm_rel_hi(addr))) {
389 ISAFUNC(uasm_i_dsll)(buf, rs, rs, 16);
390 ISAFUNC(uasm_i_daddiu)(buf, rs, rs,
391 ISAFUNC(uasm_rel_hi)(addr));
392 ISAFUNC(uasm_i_dsll)(buf, rs, rs, 16);
394 ISAFUNC(uasm_i_dsll32)(buf, rs, rs, 0);
396 ISAFUNC(uasm_i_lui)(buf, rs, ISAFUNC(uasm_rel_hi(addr)));
398 UASM_EXPORT_SYMBOL(ISAFUNC(UASM_i_LA_mostly));
400 void ISAFUNC(UASM_i_LA)(u32 **buf, unsigned int rs, long addr)
402 ISAFUNC(UASM_i_LA_mostly)(buf, rs, addr);
403 if (ISAFUNC(uasm_rel_lo(addr))) {
404 if (!ISAFUNC(uasm_in_compat_space_p)(addr))
405 ISAFUNC(uasm_i_daddiu)(buf, rs, rs,
406 ISAFUNC(uasm_rel_lo(addr)));
408 ISAFUNC(uasm_i_addiu)(buf, rs, rs,
409 ISAFUNC(uasm_rel_lo(addr)));
412 UASM_EXPORT_SYMBOL(ISAFUNC(UASM_i_LA));
414 /* Handle relocations. */
415 void ISAFUNC(uasm_r_mips_pc16)(struct uasm_reloc **rel, u32 *addr, int lid)
418 (*rel)->type = R_MIPS_PC16;
422 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_r_mips_pc16));
424 static inline void __resolve_relocs(struct uasm_reloc *rel,
425 struct uasm_label *lab);
427 void ISAFUNC(uasm_resolve_relocs)(struct uasm_reloc *rel,
428 struct uasm_label *lab)
430 struct uasm_label *l;
432 for (; rel->lab != UASM_LABEL_INVALID; rel++)
433 for (l = lab; l->lab != UASM_LABEL_INVALID; l++)
434 if (rel->lab == l->lab)
435 __resolve_relocs(rel, l);
437 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_resolve_relocs));
439 void ISAFUNC(uasm_move_relocs)(struct uasm_reloc *rel, u32 *first, u32 *end,
442 for (; rel->lab != UASM_LABEL_INVALID; rel++)
443 if (rel->addr >= first && rel->addr < end)
446 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_move_relocs));
448 void ISAFUNC(uasm_move_labels)(struct uasm_label *lab, u32 *first, u32 *end,
451 for (; lab->lab != UASM_LABEL_INVALID; lab++)
452 if (lab->addr >= first && lab->addr < end)
455 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_move_labels));
457 void ISAFUNC(uasm_copy_handler)(struct uasm_reloc *rel, struct uasm_label *lab,
458 u32 *first, u32 *end, u32 *target)
460 long off = (long)(target - first);
462 memcpy(target, first, (end - first) * sizeof(u32));
464 ISAFUNC(uasm_move_relocs(rel, first, end, off));
465 ISAFUNC(uasm_move_labels(lab, first, end, off));
467 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_copy_handler));
469 int ISAFUNC(uasm_insn_has_bdelay)(struct uasm_reloc *rel, u32 *addr)
471 for (; rel->lab != UASM_LABEL_INVALID; rel++) {
472 if (rel->addr == addr
473 && (rel->type == R_MIPS_PC16
474 || rel->type == R_MIPS_26))
480 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_insn_has_bdelay));
482 /* Convenience functions for labeled branches. */
483 void ISAFUNC(uasm_il_bltz)(u32 **p, struct uasm_reloc **r, unsigned int reg,
486 uasm_r_mips_pc16(r, *p, lid);
487 ISAFUNC(uasm_i_bltz)(p, reg, 0);
489 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bltz));
491 void ISAFUNC(uasm_il_b)(u32 **p, struct uasm_reloc **r, int lid)
493 uasm_r_mips_pc16(r, *p, lid);
494 ISAFUNC(uasm_i_b)(p, 0);
496 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_b));
498 void ISAFUNC(uasm_il_beq)(u32 **p, struct uasm_reloc **r, unsigned int r1,
499 unsigned int r2, int lid)
501 uasm_r_mips_pc16(r, *p, lid);
502 ISAFUNC(uasm_i_beq)(p, r1, r2, 0);
504 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beq));
506 void ISAFUNC(uasm_il_beqz)(u32 **p, struct uasm_reloc **r, unsigned int reg,
509 uasm_r_mips_pc16(r, *p, lid);
510 ISAFUNC(uasm_i_beqz)(p, reg, 0);
512 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beqz));
514 void ISAFUNC(uasm_il_beqzl)(u32 **p, struct uasm_reloc **r, unsigned int reg,
517 uasm_r_mips_pc16(r, *p, lid);
518 ISAFUNC(uasm_i_beqzl)(p, reg, 0);
520 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beqzl));
522 void ISAFUNC(uasm_il_bne)(u32 **p, struct uasm_reloc **r, unsigned int reg1,
523 unsigned int reg2, int lid)
525 uasm_r_mips_pc16(r, *p, lid);
526 ISAFUNC(uasm_i_bne)(p, reg1, reg2, 0);
528 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bne));
530 void ISAFUNC(uasm_il_bnez)(u32 **p, struct uasm_reloc **r, unsigned int reg,
533 uasm_r_mips_pc16(r, *p, lid);
534 ISAFUNC(uasm_i_bnez)(p, reg, 0);
536 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bnez));
538 void ISAFUNC(uasm_il_bgezl)(u32 **p, struct uasm_reloc **r, unsigned int reg,
541 uasm_r_mips_pc16(r, *p, lid);
542 ISAFUNC(uasm_i_bgezl)(p, reg, 0);
544 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bgezl));
546 void ISAFUNC(uasm_il_bgez)(u32 **p, struct uasm_reloc **r, unsigned int reg,
549 uasm_r_mips_pc16(r, *p, lid);
550 ISAFUNC(uasm_i_bgez)(p, reg, 0);
552 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bgez));
554 void ISAFUNC(uasm_il_bbit0)(u32 **p, struct uasm_reloc **r, unsigned int reg,
555 unsigned int bit, int lid)
557 uasm_r_mips_pc16(r, *p, lid);
558 ISAFUNC(uasm_i_bbit0)(p, reg, bit, 0);
560 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bbit0));
562 void ISAFUNC(uasm_il_bbit1)(u32 **p, struct uasm_reloc **r, unsigned int reg,
563 unsigned int bit, int lid)
565 uasm_r_mips_pc16(r, *p, lid);
566 ISAFUNC(uasm_i_bbit1)(p, reg, bit, 0);
568 UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bbit1));