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v3.1
  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 * 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.
  9 *
 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 */
 14
 15#include <linux/kernel.h>
 16#include <linux/types.h>
 17#include <linux/init.h>
 18
 19#include <asm/inst.h>
 20#include <asm/elf.h>
 21#include <asm/bugs.h>
 22#include <asm/uasm.h>
 23
 24enum fields {
 25	RS = 0x001,
 26	RT = 0x002,
 27	RD = 0x004,
 28	RE = 0x008,
 29	SIMM = 0x010,
 30	UIMM = 0x020,
 31	BIMM = 0x040,
 32	JIMM = 0x080,
 33	FUNC = 0x100,
 34	SET = 0x200,
 35	SCIMM = 0x400
 
 36};
 37
 38#define OP_MASK		0x3f
 39#define OP_SH		26
 40#define RS_MASK		0x1f
 41#define RS_SH		21
 42#define RT_MASK		0x1f
 43#define RT_SH		16
 44#define RD_MASK		0x1f
 45#define RD_SH		11
 46#define RE_MASK		0x1f
 47#define RE_SH		6
 48#define IMM_MASK	0xffff
 49#define IMM_SH		0
 50#define JIMM_MASK	0x3ffffff
 51#define JIMM_SH		0
 52#define FUNC_MASK	0x3f
 53#define FUNC_SH		0
 54#define SET_MASK	0x7
 55#define SET_SH		0
 56#define SCIMM_MASK	0xfffff
 57#define SCIMM_SH	6
 58
 59enum opcode {
 60	insn_invalid,
 61	insn_addu, insn_addiu, insn_and, insn_andi, insn_beq,
 62	insn_beql, insn_bgez, insn_bgezl, insn_bltz, insn_bltzl,
 63	insn_bne, insn_cache, insn_daddu, insn_daddiu, insn_dmfc0,
 64	insn_dmtc0, insn_dsll, insn_dsll32, insn_dsra, insn_dsrl,
 65	insn_dsrl32, insn_drotr, insn_drotr32, insn_dsubu, insn_eret,
 66	insn_j, insn_jal, insn_jr, insn_ld, insn_ll, insn_lld,
 67	insn_lui, insn_lw, insn_mfc0, insn_mtc0, insn_or, insn_ori,
 68	insn_pref, insn_rfe, insn_sc, insn_scd, insn_sd, insn_sll,
 69	insn_sra, insn_srl, insn_rotr, insn_subu, insn_sw, insn_tlbp,
 70	insn_tlbr, insn_tlbwi, insn_tlbwr, insn_xor, insn_xori,
 71	insn_dins, insn_dinsm, insn_syscall, insn_bbit0, insn_bbit1,
 72	insn_lwx, insn_ldx
 
 73};
 74
 75struct insn {
 76	enum opcode opcode;
 77	u32 match;
 78	enum fields fields;
 79};
 80
 81/* This macro sets the non-variable bits of an instruction. */
 82#define M(a, b, c, d, e, f)					\
 83	((a) << OP_SH						\
 84	 | (b) << RS_SH						\
 85	 | (c) << RT_SH						\
 86	 | (d) << RD_SH						\
 87	 | (e) << RE_SH						\
 88	 | (f) << FUNC_SH)
 89
 90static struct insn insn_table[] __uasminitdata = {
 91	{ insn_addiu, M(addiu_op, 0, 0, 0, 0, 0), RS | RT | SIMM },
 92	{ insn_addu, M(spec_op, 0, 0, 0, 0, addu_op), RS | RT | RD },
 93	{ insn_and, M(spec_op, 0, 0, 0, 0, and_op), RS | RT | RD },
 94	{ insn_andi, M(andi_op, 0, 0, 0, 0, 0), RS | RT | UIMM },
 95	{ insn_beq, M(beq_op, 0, 0, 0, 0, 0), RS | RT | BIMM },
 96	{ insn_beql, M(beql_op, 0, 0, 0, 0, 0), RS | RT | BIMM },
 97	{ insn_bgez, M(bcond_op, 0, bgez_op, 0, 0, 0), RS | BIMM },
 98	{ insn_bgezl, M(bcond_op, 0, bgezl_op, 0, 0, 0), RS | BIMM },
 99	{ insn_bltz, M(bcond_op, 0, bltz_op, 0, 0, 0), RS | BIMM },
100	{ insn_bltzl, M(bcond_op, 0, bltzl_op, 0, 0, 0), RS | BIMM },
101	{ insn_bne, M(bne_op, 0, 0, 0, 0, 0), RS | RT | BIMM },
102	{ insn_cache,  M(cache_op, 0, 0, 0, 0, 0),  RS | RT | SIMM },
103	{ insn_daddiu, M(daddiu_op, 0, 0, 0, 0, 0), RS | RT | SIMM },
104	{ insn_daddu, M(spec_op, 0, 0, 0, 0, daddu_op), RS | RT | RD },
105	{ insn_dmfc0, M(cop0_op, dmfc_op, 0, 0, 0, 0), RT | RD | SET},
106	{ insn_dmtc0, M(cop0_op, dmtc_op, 0, 0, 0, 0), RT | RD | SET},
107	{ insn_dsll, M(spec_op, 0, 0, 0, 0, dsll_op), RT | RD | RE },
108	{ insn_dsll32, M(spec_op, 0, 0, 0, 0, dsll32_op), RT | RD | RE },
109	{ insn_dsra, M(spec_op, 0, 0, 0, 0, dsra_op), RT | RD | RE },
110	{ insn_dsrl, M(spec_op, 0, 0, 0, 0, dsrl_op), RT | RD | RE },
111	{ insn_dsrl32, M(spec_op, 0, 0, 0, 0, dsrl32_op), RT | RD | RE },
112	{ insn_drotr, M(spec_op, 1, 0, 0, 0, dsrl_op), RT | RD | RE },
113	{ insn_drotr32, M(spec_op, 1, 0, 0, 0, dsrl32_op), RT | RD | RE },
114	{ insn_dsubu, M(spec_op, 0, 0, 0, 0, dsubu_op), RS | RT | RD },
115	{ insn_eret,  M(cop0_op, cop_op, 0, 0, 0, eret_op),  0 },
116	{ insn_j,  M(j_op, 0, 0, 0, 0, 0),  JIMM },
117	{ insn_jal,  M(jal_op, 0, 0, 0, 0, 0),  JIMM },
118	{ insn_jr,  M(spec_op, 0, 0, 0, 0, jr_op),  RS },
119	{ insn_ld,  M(ld_op, 0, 0, 0, 0, 0),  RS | RT | SIMM },
120	{ insn_ll,  M(ll_op, 0, 0, 0, 0, 0),  RS | RT | SIMM },
121	{ insn_lld,  M(lld_op, 0, 0, 0, 0, 0),  RS | RT | SIMM },
122	{ insn_lui,  M(lui_op, 0, 0, 0, 0, 0),  RT | SIMM },
123	{ insn_lw,  M(lw_op, 0, 0, 0, 0, 0),  RS | RT | SIMM },
124	{ insn_mfc0,  M(cop0_op, mfc_op, 0, 0, 0, 0),  RT | RD | SET},
125	{ insn_mtc0,  M(cop0_op, mtc_op, 0, 0, 0, 0),  RT | RD | SET},
126	{ insn_or,  M(spec_op, 0, 0, 0, 0, or_op),  RS | RT | RD },
127	{ insn_ori,  M(ori_op, 0, 0, 0, 0, 0),  RS | RT | UIMM },
128	{ insn_pref,  M(pref_op, 0, 0, 0, 0, 0),  RS | RT | SIMM },
129	{ insn_rfe,  M(cop0_op, cop_op, 0, 0, 0, rfe_op),  0 },
130	{ insn_sc,  M(sc_op, 0, 0, 0, 0, 0),  RS | RT | SIMM },
131	{ insn_scd,  M(scd_op, 0, 0, 0, 0, 0),  RS | RT | SIMM },
132	{ insn_sd,  M(sd_op, 0, 0, 0, 0, 0),  RS | RT | SIMM },
133	{ insn_sll,  M(spec_op, 0, 0, 0, 0, sll_op),  RT | RD | RE },
134	{ insn_sra,  M(spec_op, 0, 0, 0, 0, sra_op),  RT | RD | RE },
135	{ insn_srl,  M(spec_op, 0, 0, 0, 0, srl_op),  RT | RD | RE },
136	{ insn_rotr,  M(spec_op, 1, 0, 0, 0, srl_op),  RT | RD | RE },
137	{ insn_subu,  M(spec_op, 0, 0, 0, 0, subu_op),  RS | RT | RD },
138	{ insn_sw,  M(sw_op, 0, 0, 0, 0, 0),  RS | RT | SIMM },
139	{ insn_tlbp,  M(cop0_op, cop_op, 0, 0, 0, tlbp_op),  0 },
140	{ insn_tlbr,  M(cop0_op, cop_op, 0, 0, 0, tlbr_op),  0 },
141	{ insn_tlbwi,  M(cop0_op, cop_op, 0, 0, 0, tlbwi_op),  0 },
142	{ insn_tlbwr,  M(cop0_op, cop_op, 0, 0, 0, tlbwr_op),  0 },
143	{ insn_xor,  M(spec_op, 0, 0, 0, 0, xor_op),  RS | RT | RD },
144	{ insn_xori,  M(xori_op, 0, 0, 0, 0, 0),  RS | RT | UIMM },
145	{ insn_dins, M(spec3_op, 0, 0, 0, 0, dins_op), RS | RT | RD | RE },
146	{ insn_dinsm, M(spec3_op, 0, 0, 0, 0, dinsm_op), RS | RT | RD | RE },
147	{ insn_syscall, M(spec_op, 0, 0, 0, 0, syscall_op), SCIMM},
148	{ insn_bbit0, M(lwc2_op, 0, 0, 0, 0, 0), RS | RT | BIMM },
149	{ insn_bbit1, M(swc2_op, 0, 0, 0, 0, 0), RS | RT | BIMM },
150	{ insn_lwx, M(spec3_op, 0, 0, 0, lwx_op, lx_op), RS | RT | RD },
151	{ insn_ldx, M(spec3_op, 0, 0, 0, ldx_op, lx_op), RS | RT | RD },
152	{ insn_invalid, 0, 0 }
153};
154
155#undef M
156
157static inline __uasminit u32 build_rs(u32 arg)
158{
159	WARN(arg & ~RS_MASK, KERN_WARNING "Micro-assembler field overflow\n");
160
161	return (arg & RS_MASK) << RS_SH;
162}
163
164static inline __uasminit u32 build_rt(u32 arg)
165{
166	WARN(arg & ~RT_MASK, KERN_WARNING "Micro-assembler field overflow\n");
167
168	return (arg & RT_MASK) << RT_SH;
169}
170
171static inline __uasminit u32 build_rd(u32 arg)
172{
173	WARN(arg & ~RD_MASK, KERN_WARNING "Micro-assembler field overflow\n");
174
175	return (arg & RD_MASK) << RD_SH;
176}
177
178static inline __uasminit u32 build_re(u32 arg)
179{
180	WARN(arg & ~RE_MASK, KERN_WARNING "Micro-assembler field overflow\n");
181
182	return (arg & RE_MASK) << RE_SH;
183}
184
185static inline __uasminit u32 build_simm(s32 arg)
186{
187	WARN(arg > 0x7fff || arg < -0x8000,
188	     KERN_WARNING "Micro-assembler field overflow\n");
189
190	return arg & 0xffff;
191}
192
193static inline __uasminit u32 build_uimm(u32 arg)
194{
195	WARN(arg & ~IMM_MASK, KERN_WARNING "Micro-assembler field overflow\n");
196
197	return arg & IMM_MASK;
198}
199
200static inline __uasminit u32 build_bimm(s32 arg)
201{
202	WARN(arg > 0x1ffff || arg < -0x20000,
203	     KERN_WARNING "Micro-assembler field overflow\n");
204
205	WARN(arg & 0x3, KERN_WARNING "Invalid micro-assembler branch target\n");
206
207	return ((arg < 0) ? (1 << 15) : 0) | ((arg >> 2) & 0x7fff);
208}
209
210static inline __uasminit u32 build_jimm(u32 arg)
211{
212	WARN(arg & ~(JIMM_MASK << 2),
213	     KERN_WARNING "Micro-assembler field overflow\n");
214
215	return (arg >> 2) & JIMM_MASK;
216}
217
218static inline __uasminit u32 build_scimm(u32 arg)
219{
220	WARN(arg & ~SCIMM_MASK,
221	     KERN_WARNING "Micro-assembler field overflow\n");
222
223	return (arg & SCIMM_MASK) << SCIMM_SH;
224}
225
226static inline __uasminit u32 build_func(u32 arg)
227{
228	WARN(arg & ~FUNC_MASK, KERN_WARNING "Micro-assembler field overflow\n");
229
230	return arg & FUNC_MASK;
231}
232
233static inline __uasminit u32 build_set(u32 arg)
234{
235	WARN(arg & ~SET_MASK, KERN_WARNING "Micro-assembler field overflow\n");
236
237	return arg & SET_MASK;
238}
239
240/*
241 * The order of opcode arguments is implicitly left to right,
242 * starting with RS and ending with FUNC or IMM.
243 */
244static void __uasminit build_insn(u32 **buf, enum opcode opc, ...)
245{
246	struct insn *ip = NULL;
247	unsigned int i;
248	va_list ap;
249	u32 op;
250
251	for (i = 0; insn_table[i].opcode != insn_invalid; i++)
252		if (insn_table[i].opcode == opc) {
253			ip = &insn_table[i];
254			break;
255		}
256
257	if (!ip || (opc == insn_daddiu && r4k_daddiu_bug()))
258		panic("Unsupported Micro-assembler instruction %d", opc);
259
260	op = ip->match;
261	va_start(ap, opc);
262	if (ip->fields & RS)
263		op |= build_rs(va_arg(ap, u32));
264	if (ip->fields & RT)
265		op |= build_rt(va_arg(ap, u32));
266	if (ip->fields & RD)
267		op |= build_rd(va_arg(ap, u32));
268	if (ip->fields & RE)
269		op |= build_re(va_arg(ap, u32));
270	if (ip->fields & SIMM)
271		op |= build_simm(va_arg(ap, s32));
272	if (ip->fields & UIMM)
273		op |= build_uimm(va_arg(ap, u32));
274	if (ip->fields & BIMM)
275		op |= build_bimm(va_arg(ap, s32));
276	if (ip->fields & JIMM)
277		op |= build_jimm(va_arg(ap, u32));
278	if (ip->fields & FUNC)
279		op |= build_func(va_arg(ap, u32));
280	if (ip->fields & SET)
281		op |= build_set(va_arg(ap, u32));
282	if (ip->fields & SCIMM)
283		op |= build_scimm(va_arg(ap, u32));
284	va_end(ap);
285
286	**buf = op;
287	(*buf)++;
288}
289
290#define I_u1u2u3(op)					\
291Ip_u1u2u3(op)						\
292{							\
293	build_insn(buf, insn##op, a, b, c);		\
294}							\
295UASM_EXPORT_SYMBOL(uasm_i##op);
296
 
 
 
 
 
 
 
297#define I_u2u1u3(op)					\
298Ip_u2u1u3(op)						\
299{							\
300	build_insn(buf, insn##op, b, a, c);		\
301}							\
302UASM_EXPORT_SYMBOL(uasm_i##op);
303
 
 
 
 
 
 
 
304#define I_u3u1u2(op)					\
305Ip_u3u1u2(op)						\
306{							\
307	build_insn(buf, insn##op, b, c, a);		\
308}							\
309UASM_EXPORT_SYMBOL(uasm_i##op);
310
311#define I_u1u2s3(op)					\
312Ip_u1u2s3(op)						\
313{							\
314	build_insn(buf, insn##op, a, b, c);		\
315}							\
316UASM_EXPORT_SYMBOL(uasm_i##op);
317
318#define I_u2s3u1(op)					\
319Ip_u2s3u1(op)						\
320{							\
321	build_insn(buf, insn##op, c, a, b);		\
322}							\
323UASM_EXPORT_SYMBOL(uasm_i##op);
324
325#define I_u2u1s3(op)					\
326Ip_u2u1s3(op)						\
327{							\
328	build_insn(buf, insn##op, b, a, c);		\
329}							\
330UASM_EXPORT_SYMBOL(uasm_i##op);
331
332#define I_u2u1msbu3(op)					\
333Ip_u2u1msbu3(op)					\
334{							\
335	build_insn(buf, insn##op, b, a, c+d-1, c);	\
336}							\
337UASM_EXPORT_SYMBOL(uasm_i##op);
338
339#define I_u2u1msb32u3(op)				\
340Ip_u2u1msbu3(op)					\
341{							\
342	build_insn(buf, insn##op, b, a, c+d-33, c);	\
343}							\
344UASM_EXPORT_SYMBOL(uasm_i##op);
345
 
 
 
 
 
 
 
346#define I_u1u2(op)					\
347Ip_u1u2(op)						\
348{							\
349	build_insn(buf, insn##op, a, b);		\
350}							\
351UASM_EXPORT_SYMBOL(uasm_i##op);
352
 
 
 
 
 
 
 
353#define I_u1s2(op)					\
354Ip_u1s2(op)						\
355{							\
356	build_insn(buf, insn##op, a, b);		\
357}							\
358UASM_EXPORT_SYMBOL(uasm_i##op);
359
360#define I_u1(op)					\
361Ip_u1(op)						\
362{							\
363	build_insn(buf, insn##op, a);			\
364}							\
365UASM_EXPORT_SYMBOL(uasm_i##op);
366
367#define I_0(op)						\
368Ip_0(op)						\
369{							\
370	build_insn(buf, insn##op);			\
371}							\
372UASM_EXPORT_SYMBOL(uasm_i##op);
373
374I_u2u1s3(_addiu)
375I_u3u1u2(_addu)
376I_u2u1u3(_andi)
377I_u3u1u2(_and)
378I_u1u2s3(_beq)
379I_u1u2s3(_beql)
380I_u1s2(_bgez)
381I_u1s2(_bgezl)
382I_u1s2(_bltz)
383I_u1s2(_bltzl)
384I_u1u2s3(_bne)
385I_u2s3u1(_cache)
386I_u1u2u3(_dmfc0)
387I_u1u2u3(_dmtc0)
388I_u2u1s3(_daddiu)
389I_u3u1u2(_daddu)
 
390I_u2u1u3(_dsll)
391I_u2u1u3(_dsll32)
392I_u2u1u3(_dsra)
393I_u2u1u3(_dsrl)
394I_u2u1u3(_dsrl32)
395I_u2u1u3(_drotr)
396I_u2u1u3(_drotr32)
397I_u3u1u2(_dsubu)
398I_0(_eret)
 
 
399I_u1(_j)
400I_u1(_jal)
 
401I_u1(_jr)
 
402I_u2s3u1(_ld)
 
403I_u2s3u1(_ll)
404I_u2s3u1(_lld)
405I_u1s2(_lui)
406I_u2s3u1(_lw)
407I_u1u2u3(_mfc0)
 
 
 
408I_u1u2u3(_mtc0)
 
 
409I_u2u1u3(_ori)
410I_u3u1u2(_or)
411I_0(_rfe)
412I_u2s3u1(_sc)
413I_u2s3u1(_scd)
414I_u2s3u1(_sd)
415I_u2u1u3(_sll)
 
 
 
 
416I_u2u1u3(_sra)
417I_u2u1u3(_srl)
 
418I_u2u1u3(_rotr)
419I_u3u1u2(_subu)
420I_u2s3u1(_sw)
 
421I_0(_tlbp)
422I_0(_tlbr)
423I_0(_tlbwi)
424I_0(_tlbwr)
 
 
425I_u3u1u2(_xor)
426I_u2u1u3(_xori)
 
427I_u2u1msbu3(_dins);
428I_u2u1msb32u3(_dinsm);
429I_u1(_syscall);
430I_u1u2s3(_bbit0);
431I_u1u2s3(_bbit1);
432I_u3u1u2(_lwx)
433I_u3u1u2(_ldx)
434
435#ifdef CONFIG_CPU_CAVIUM_OCTEON
436#include <asm/octeon/octeon.h>
437void __uasminit uasm_i_pref(u32 **buf, unsigned int a, signed int b,
438			    unsigned int c)
439{
440	if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X) && a <= 24 && a != 5)
441		/*
442		 * As per erratum Core-14449, replace prefetches 0-4,
443		 * 6-24 with 'pref 28'.
444		 */
445		build_insn(buf, insn_pref, c, 28, b);
446	else
447		build_insn(buf, insn_pref, c, a, b);
448}
449UASM_EXPORT_SYMBOL(uasm_i_pref);
450#else
451I_u2s3u1(_pref)
452#endif
453
454/* Handle labels. */
455void __uasminit uasm_build_label(struct uasm_label **lab, u32 *addr, int lid)
456{
457	(*lab)->addr = addr;
458	(*lab)->lab = lid;
459	(*lab)++;
460}
461UASM_EXPORT_SYMBOL(uasm_build_label);
462
463int __uasminit uasm_in_compat_space_p(long addr)
464{
465	/* Is this address in 32bit compat space? */
466#ifdef CONFIG_64BIT
467	return (((addr) & 0xffffffff00000000L) == 0xffffffff00000000L);
468#else
469	return 1;
470#endif
471}
472UASM_EXPORT_SYMBOL(uasm_in_compat_space_p);
473
474static int __uasminit uasm_rel_highest(long val)
475{
476#ifdef CONFIG_64BIT
477	return ((((val + 0x800080008000L) >> 48) & 0xffff) ^ 0x8000) - 0x8000;
478#else
479	return 0;
480#endif
481}
482
483static int __uasminit uasm_rel_higher(long val)
484{
485#ifdef CONFIG_64BIT
486	return ((((val + 0x80008000L) >> 32) & 0xffff) ^ 0x8000) - 0x8000;
487#else
488	return 0;
489#endif
490}
491
492int __uasminit uasm_rel_hi(long val)
493{
494	return ((((val + 0x8000L) >> 16) & 0xffff) ^ 0x8000) - 0x8000;
495}
496UASM_EXPORT_SYMBOL(uasm_rel_hi);
497
498int __uasminit uasm_rel_lo(long val)
499{
500	return ((val & 0xffff) ^ 0x8000) - 0x8000;
501}
502UASM_EXPORT_SYMBOL(uasm_rel_lo);
503
504void __uasminit UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr)
505{
506	if (!uasm_in_compat_space_p(addr)) {
507		uasm_i_lui(buf, rs, uasm_rel_highest(addr));
508		if (uasm_rel_higher(addr))
509			uasm_i_daddiu(buf, rs, rs, uasm_rel_higher(addr));
510		if (uasm_rel_hi(addr)) {
511			uasm_i_dsll(buf, rs, rs, 16);
512			uasm_i_daddiu(buf, rs, rs, uasm_rel_hi(addr));
513			uasm_i_dsll(buf, rs, rs, 16);
 
514		} else
515			uasm_i_dsll32(buf, rs, rs, 0);
516	} else
517		uasm_i_lui(buf, rs, uasm_rel_hi(addr));
518}
519UASM_EXPORT_SYMBOL(UASM_i_LA_mostly);
520
521void __uasminit UASM_i_LA(u32 **buf, unsigned int rs, long addr)
522{
523	UASM_i_LA_mostly(buf, rs, addr);
524	if (uasm_rel_lo(addr)) {
525		if (!uasm_in_compat_space_p(addr))
526			uasm_i_daddiu(buf, rs, rs, uasm_rel_lo(addr));
 
527		else
528			uasm_i_addiu(buf, rs, rs, uasm_rel_lo(addr));
 
529	}
530}
531UASM_EXPORT_SYMBOL(UASM_i_LA);
532
533/* Handle relocations. */
534void __uasminit
535uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid)
536{
537	(*rel)->addr = addr;
538	(*rel)->type = R_MIPS_PC16;
539	(*rel)->lab = lid;
540	(*rel)++;
541}
542UASM_EXPORT_SYMBOL(uasm_r_mips_pc16);
543
544static inline void __uasminit
545__resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab)
546{
547	long laddr = (long)lab->addr;
548	long raddr = (long)rel->addr;
549
550	switch (rel->type) {
551	case R_MIPS_PC16:
552		*rel->addr |= build_bimm(laddr - (raddr + 4));
553		break;
554
555	default:
556		panic("Unsupported Micro-assembler relocation %d",
557		      rel->type);
558	}
559}
560
561void __uasminit
562uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab)
563{
564	struct uasm_label *l;
565
566	for (; rel->lab != UASM_LABEL_INVALID; rel++)
567		for (l = lab; l->lab != UASM_LABEL_INVALID; l++)
568			if (rel->lab == l->lab)
569				__resolve_relocs(rel, l);
570}
571UASM_EXPORT_SYMBOL(uasm_resolve_relocs);
572
573void __uasminit
574uasm_move_relocs(struct uasm_reloc *rel, u32 *first, u32 *end, long off)
575{
576	for (; rel->lab != UASM_LABEL_INVALID; rel++)
577		if (rel->addr >= first && rel->addr < end)
578			rel->addr += off;
579}
580UASM_EXPORT_SYMBOL(uasm_move_relocs);
581
582void __uasminit
583uasm_move_labels(struct uasm_label *lab, u32 *first, u32 *end, long off)
584{
585	for (; lab->lab != UASM_LABEL_INVALID; lab++)
586		if (lab->addr >= first && lab->addr < end)
587			lab->addr += off;
588}
589UASM_EXPORT_SYMBOL(uasm_move_labels);
590
591void __uasminit
592uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab, u32 *first,
593		  u32 *end, u32 *target)
594{
595	long off = (long)(target - first);
596
597	memcpy(target, first, (end - first) * sizeof(u32));
598
599	uasm_move_relocs(rel, first, end, off);
600	uasm_move_labels(lab, first, end, off);
601}
602UASM_EXPORT_SYMBOL(uasm_copy_handler);
603
604int __uasminit uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr)
605{
606	for (; rel->lab != UASM_LABEL_INVALID; rel++) {
607		if (rel->addr == addr
608		    && (rel->type == R_MIPS_PC16
609			|| rel->type == R_MIPS_26))
610			return 1;
611	}
612
613	return 0;
614}
615UASM_EXPORT_SYMBOL(uasm_insn_has_bdelay);
616
617/* Convenience functions for labeled branches. */
618void __uasminit
619uasm_il_bltz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
 
 
 
 
 
 
 
620{
621	uasm_r_mips_pc16(r, *p, lid);
622	uasm_i_bltz(p, reg, 0);
623}
624UASM_EXPORT_SYMBOL(uasm_il_bltz);
625
626void __uasminit
627uasm_il_b(u32 **p, struct uasm_reloc **r, int lid)
628{
629	uasm_r_mips_pc16(r, *p, lid);
630	uasm_i_b(p, 0);
631}
632UASM_EXPORT_SYMBOL(uasm_il_b);
633
634void __uasminit
635uasm_il_beqz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
636{
637	uasm_r_mips_pc16(r, *p, lid);
638	uasm_i_beqz(p, reg, 0);
639}
640UASM_EXPORT_SYMBOL(uasm_il_beqz);
641
642void __uasminit
643uasm_il_beqzl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
644{
645	uasm_r_mips_pc16(r, *p, lid);
646	uasm_i_beqzl(p, reg, 0);
647}
648UASM_EXPORT_SYMBOL(uasm_il_beqzl);
649
650void __uasminit
651uasm_il_bne(u32 **p, struct uasm_reloc **r, unsigned int reg1,
652	unsigned int reg2, int lid)
653{
654	uasm_r_mips_pc16(r, *p, lid);
655	uasm_i_bne(p, reg1, reg2, 0);
656}
657UASM_EXPORT_SYMBOL(uasm_il_bne);
658
659void __uasminit
660uasm_il_bnez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
661{
662	uasm_r_mips_pc16(r, *p, lid);
663	uasm_i_bnez(p, reg, 0);
664}
665UASM_EXPORT_SYMBOL(uasm_il_bnez);
666
667void __uasminit
668uasm_il_bgezl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
669{
670	uasm_r_mips_pc16(r, *p, lid);
671	uasm_i_bgezl(p, reg, 0);
672}
673UASM_EXPORT_SYMBOL(uasm_il_bgezl);
674
675void __uasminit
676uasm_il_bgez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
677{
678	uasm_r_mips_pc16(r, *p, lid);
679	uasm_i_bgez(p, reg, 0);
680}
681UASM_EXPORT_SYMBOL(uasm_il_bgez);
682
683void __uasminit
684uasm_il_bbit0(u32 **p, struct uasm_reloc **r, unsigned int reg,
685	      unsigned int bit, int lid)
686{
687	uasm_r_mips_pc16(r, *p, lid);
688	uasm_i_bbit0(p, reg, bit, 0);
689}
690UASM_EXPORT_SYMBOL(uasm_il_bbit0);
691
692void __uasminit
693uasm_il_bbit1(u32 **p, struct uasm_reloc **r, unsigned int reg,
694	      unsigned int bit, int lid)
695{
696	uasm_r_mips_pc16(r, *p, lid);
697	uasm_i_bbit1(p, reg, bit, 0);
698}
699UASM_EXPORT_SYMBOL(uasm_il_bbit1);
v4.6
  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 * 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.
  9 *
 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.
 14 */
 15
 
 
 
 
 
 
 
 
 
 16enum fields {
 17	RS = 0x001,
 18	RT = 0x002,
 19	RD = 0x004,
 20	RE = 0x008,
 21	SIMM = 0x010,
 22	UIMM = 0x020,
 23	BIMM = 0x040,
 24	JIMM = 0x080,
 25	FUNC = 0x100,
 26	SET = 0x200,
 27	SCIMM = 0x400,
 28	SIMM9 = 0x800,
 29};
 30
 31#define OP_MASK		0x3f
 32#define OP_SH		26
 
 
 
 
 33#define RD_MASK		0x1f
 34#define RD_SH		11
 35#define RE_MASK		0x1f
 36#define RE_SH		6
 37#define IMM_MASK	0xffff
 38#define IMM_SH		0
 39#define JIMM_MASK	0x3ffffff
 40#define JIMM_SH		0
 41#define FUNC_MASK	0x3f
 42#define FUNC_SH		0
 43#define SET_MASK	0x7
 44#define SET_SH		0
 45#define SIMM9_SH	7
 46#define SIMM9_MASK	0x1ff
 47
 48enum opcode {
 49	insn_invalid,
 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_daddiu, insn_daddu, insn_dins, insn_dinsm,
 53	insn_divu, insn_dmfc0, insn_dmtc0, insn_drotr, insn_drotr32, insn_dsll,
 54	insn_dsll32, insn_dsra, insn_dsrl, insn_dsrl32, insn_dsubu, insn_eret,
 55	insn_ext, insn_ins, insn_j, insn_jal, insn_jalr, insn_jr, insn_lb,
 56	insn_ld, insn_ldx, insn_lh, insn_ll, insn_lld, insn_lui, insn_lw,
 57	insn_lwx, insn_mfc0, insn_mfhc0, insn_mfhi, insn_mflo, insn_mtc0,
 58	insn_mthc0, insn_mul, insn_or, insn_ori, insn_pref, insn_rfe,
 59	insn_rotr, insn_sc, insn_scd, insn_sd, insn_sll, insn_sllv, insn_slt,
 60	insn_sltiu, insn_sltu, insn_sra, insn_srl, insn_srlv, insn_subu,
 61	insn_sw, insn_sync, insn_syscall, insn_tlbp, insn_tlbr, insn_tlbwi,
 62	insn_tlbwr, insn_wait, insn_wsbh, insn_xor, insn_xori, insn_yield,
 63};
 64
 65struct insn {
 66	enum opcode opcode;
 67	u32 match;
 68	enum fields fields;
 69};
 70
 71static inline u32 build_rs(u32 arg)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 72{
 73	WARN(arg & ~RS_MASK, KERN_WARNING "Micro-assembler field overflow\n");
 74
 75	return (arg & RS_MASK) << RS_SH;
 76}
 77
 78static inline u32 build_rt(u32 arg)
 79{
 80	WARN(arg & ~RT_MASK, KERN_WARNING "Micro-assembler field overflow\n");
 81
 82	return (arg & RT_MASK) << RT_SH;
 83}
 84
 85static inline u32 build_rd(u32 arg)
 86{
 87	WARN(arg & ~RD_MASK, KERN_WARNING "Micro-assembler field overflow\n");
 88
 89	return (arg & RD_MASK) << RD_SH;
 90}
 91
 92static inline u32 build_re(u32 arg)
 93{
 94	WARN(arg & ~RE_MASK, KERN_WARNING "Micro-assembler field overflow\n");
 95
 96	return (arg & RE_MASK) << RE_SH;
 97}
 98
 99static inline u32 build_simm(s32 arg)
100{
101	WARN(arg > 0x7fff || arg < -0x8000,
102	     KERN_WARNING "Micro-assembler field overflow\n");
103
104	return arg & 0xffff;
105}
106
107static inline u32 build_uimm(u32 arg)
108{
109	WARN(arg & ~IMM_MASK, KERN_WARNING "Micro-assembler field overflow\n");
110
111	return arg & IMM_MASK;
112}
113
114static inline u32 build_scimm(u32 arg)
115{
116	WARN(arg & ~SCIMM_MASK,
117	     KERN_WARNING "Micro-assembler field overflow\n");
118
119	return (arg & SCIMM_MASK) << SCIMM_SH;
 
 
120}
121
122static inline u32 build_scimm9(s32 arg)
123{
124	WARN((arg > 0xff || arg < -0x100),
125	       KERN_WARNING "Micro-assembler field overflow\n");
126
127	return (arg & SIMM9_MASK) << SIMM9_SH;
128}
129
130static inline u32 build_func(u32 arg)
 
 
 
 
 
 
 
 
131{
132	WARN(arg & ~FUNC_MASK, KERN_WARNING "Micro-assembler field overflow\n");
133
134	return arg & FUNC_MASK;
135}
136
137static inline u32 build_set(u32 arg)
138{
139	WARN(arg & ~SET_MASK, KERN_WARNING "Micro-assembler field overflow\n");
140
141	return arg & SET_MASK;
142}
143
144static void build_insn(u32 **buf, enum opcode opc, ...);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
145
146#define I_u1u2u3(op)					\
147Ip_u1u2u3(op)						\
148{							\
149	build_insn(buf, insn##op, a, b, c);		\
150}							\
151UASM_EXPORT_SYMBOL(uasm_i##op);
152
153#define I_s3s1s2(op)					\
154Ip_s3s1s2(op)						\
155{							\
156	build_insn(buf, insn##op, b, c, a);		\
157}							\
158UASM_EXPORT_SYMBOL(uasm_i##op);
159
160#define I_u2u1u3(op)					\
161Ip_u2u1u3(op)						\
162{							\
163	build_insn(buf, insn##op, b, a, c);		\
164}							\
165UASM_EXPORT_SYMBOL(uasm_i##op);
166
167#define I_u3u2u1(op)					\
168Ip_u3u2u1(op)						\
169{							\
170	build_insn(buf, insn##op, c, b, a);		\
171}							\
172UASM_EXPORT_SYMBOL(uasm_i##op);
173
174#define I_u3u1u2(op)					\
175Ip_u3u1u2(op)						\
176{							\
177	build_insn(buf, insn##op, b, c, a);		\
178}							\
179UASM_EXPORT_SYMBOL(uasm_i##op);
180
181#define I_u1u2s3(op)					\
182Ip_u1u2s3(op)						\
183{							\
184	build_insn(buf, insn##op, a, b, c);		\
185}							\
186UASM_EXPORT_SYMBOL(uasm_i##op);
187
188#define I_u2s3u1(op)					\
189Ip_u2s3u1(op)						\
190{							\
191	build_insn(buf, insn##op, c, a, b);		\
192}							\
193UASM_EXPORT_SYMBOL(uasm_i##op);
194
195#define I_u2u1s3(op)					\
196Ip_u2u1s3(op)						\
197{							\
198	build_insn(buf, insn##op, b, a, c);		\
199}							\
200UASM_EXPORT_SYMBOL(uasm_i##op);
201
202#define I_u2u1msbu3(op)					\
203Ip_u2u1msbu3(op)					\
204{							\
205	build_insn(buf, insn##op, b, a, c+d-1, c);	\
206}							\
207UASM_EXPORT_SYMBOL(uasm_i##op);
208
209#define I_u2u1msb32u3(op)				\
210Ip_u2u1msbu3(op)					\
211{							\
212	build_insn(buf, insn##op, b, a, c+d-33, c);	\
213}							\
214UASM_EXPORT_SYMBOL(uasm_i##op);
215
216#define I_u2u1msbdu3(op)				\
217Ip_u2u1msbu3(op)					\
218{							\
219	build_insn(buf, insn##op, b, a, d-1, c);	\
220}							\
221UASM_EXPORT_SYMBOL(uasm_i##op);
222
223#define I_u1u2(op)					\
224Ip_u1u2(op)						\
225{							\
226	build_insn(buf, insn##op, a, b);		\
227}							\
228UASM_EXPORT_SYMBOL(uasm_i##op);
229
230#define I_u2u1(op)					\
231Ip_u1u2(op)						\
232{							\
233	build_insn(buf, insn##op, b, a);		\
234}							\
235UASM_EXPORT_SYMBOL(uasm_i##op);
236
237#define I_u1s2(op)					\
238Ip_u1s2(op)						\
239{							\
240	build_insn(buf, insn##op, a, b);		\
241}							\
242UASM_EXPORT_SYMBOL(uasm_i##op);
243
244#define I_u1(op)					\
245Ip_u1(op)						\
246{							\
247	build_insn(buf, insn##op, a);			\
248}							\
249UASM_EXPORT_SYMBOL(uasm_i##op);
250
251#define I_0(op)						\
252Ip_0(op)						\
253{							\
254	build_insn(buf, insn##op);			\
255}							\
256UASM_EXPORT_SYMBOL(uasm_i##op);
257
258I_u2u1s3(_addiu)
259I_u3u1u2(_addu)
260I_u2u1u3(_andi)
261I_u3u1u2(_and)
262I_u1u2s3(_beq)
263I_u1u2s3(_beql)
264I_u1s2(_bgez)
265I_u1s2(_bgezl)
266I_u1s2(_bltz)
267I_u1s2(_bltzl)
268I_u1u2s3(_bne)
269I_u2s3u1(_cache)
270I_u1u2u3(_dmfc0)
271I_u1u2u3(_dmtc0)
272I_u2u1s3(_daddiu)
273I_u3u1u2(_daddu)
274I_u1u2(_divu)
275I_u2u1u3(_dsll)
276I_u2u1u3(_dsll32)
277I_u2u1u3(_dsra)
278I_u2u1u3(_dsrl)
279I_u2u1u3(_dsrl32)
280I_u2u1u3(_drotr)
281I_u2u1u3(_drotr32)
282I_u3u1u2(_dsubu)
283I_0(_eret)
284I_u2u1msbdu3(_ext)
285I_u2u1msbu3(_ins)
286I_u1(_j)
287I_u1(_jal)
288I_u2u1(_jalr)
289I_u1(_jr)
290I_u2s3u1(_lb)
291I_u2s3u1(_ld)
292I_u2s3u1(_lh)
293I_u2s3u1(_ll)
294I_u2s3u1(_lld)
295I_u1s2(_lui)
296I_u2s3u1(_lw)
297I_u1u2u3(_mfc0)
298I_u1u2u3(_mfhc0)
299I_u1(_mfhi)
300I_u1(_mflo)
301I_u1u2u3(_mtc0)
302I_u1u2u3(_mthc0)
303I_u3u1u2(_mul)
304I_u2u1u3(_ori)
305I_u3u1u2(_or)
306I_0(_rfe)
307I_u2s3u1(_sc)
308I_u2s3u1(_scd)
309I_u2s3u1(_sd)
310I_u2u1u3(_sll)
311I_u3u2u1(_sllv)
312I_s3s1s2(_slt)
313I_u2u1s3(_sltiu)
314I_u3u1u2(_sltu)
315I_u2u1u3(_sra)
316I_u2u1u3(_srl)
317I_u3u2u1(_srlv)
318I_u2u1u3(_rotr)
319I_u3u1u2(_subu)
320I_u2s3u1(_sw)
321I_u1(_sync)
322I_0(_tlbp)
323I_0(_tlbr)
324I_0(_tlbwi)
325I_0(_tlbwr)
326I_u1(_wait);
327I_u2u1(_wsbh)
328I_u3u1u2(_xor)
329I_u2u1u3(_xori)
330I_u2u1(_yield)
331I_u2u1msbu3(_dins);
332I_u2u1msb32u3(_dinsm);
333I_u1(_syscall);
334I_u1u2s3(_bbit0);
335I_u1u2s3(_bbit1);
336I_u3u1u2(_lwx)
337I_u3u1u2(_ldx)
338
339#ifdef CONFIG_CPU_CAVIUM_OCTEON
340#include <asm/octeon/octeon.h>
341void ISAFUNC(uasm_i_pref)(u32 **buf, unsigned int a, signed int b,
342			    unsigned int c)
343{
344	if (CAVIUM_OCTEON_DCACHE_PREFETCH_WAR && a <= 24 && a != 5)
345		/*
346		 * As per erratum Core-14449, replace prefetches 0-4,
347		 * 6-24 with 'pref 28'.
348		 */
349		build_insn(buf, insn_pref, c, 28, b);
350	else
351		build_insn(buf, insn_pref, c, a, b);
352}
353UASM_EXPORT_SYMBOL(ISAFUNC(uasm_i_pref));
354#else
355I_u2s3u1(_pref)
356#endif
357
358/* Handle labels. */
359void ISAFUNC(uasm_build_label)(struct uasm_label **lab, u32 *addr, int lid)
360{
361	(*lab)->addr = addr;
362	(*lab)->lab = lid;
363	(*lab)++;
364}
365UASM_EXPORT_SYMBOL(ISAFUNC(uasm_build_label));
366
367int ISAFUNC(uasm_in_compat_space_p)(long addr)
368{
369	/* Is this address in 32bit compat space? */
370#ifdef CONFIG_64BIT
371	return (((addr) & 0xffffffff00000000L) == 0xffffffff00000000L);
372#else
373	return 1;
374#endif
375}
376UASM_EXPORT_SYMBOL(ISAFUNC(uasm_in_compat_space_p));
377
378static int uasm_rel_highest(long val)
379{
380#ifdef CONFIG_64BIT
381	return ((((val + 0x800080008000L) >> 48) & 0xffff) ^ 0x8000) - 0x8000;
382#else
383	return 0;
384#endif
385}
386
387static int uasm_rel_higher(long val)
388{
389#ifdef CONFIG_64BIT
390	return ((((val + 0x80008000L) >> 32) & 0xffff) ^ 0x8000) - 0x8000;
391#else
392	return 0;
393#endif
394}
395
396int ISAFUNC(uasm_rel_hi)(long val)
397{
398	return ((((val + 0x8000L) >> 16) & 0xffff) ^ 0x8000) - 0x8000;
399}
400UASM_EXPORT_SYMBOL(ISAFUNC(uasm_rel_hi));
401
402int ISAFUNC(uasm_rel_lo)(long val)
403{
404	return ((val & 0xffff) ^ 0x8000) - 0x8000;
405}
406UASM_EXPORT_SYMBOL(ISAFUNC(uasm_rel_lo));
407
408void ISAFUNC(UASM_i_LA_mostly)(u32 **buf, unsigned int rs, long addr)
409{
410	if (!ISAFUNC(uasm_in_compat_space_p)(addr)) {
411		ISAFUNC(uasm_i_lui)(buf, rs, uasm_rel_highest(addr));
412		if (uasm_rel_higher(addr))
413			ISAFUNC(uasm_i_daddiu)(buf, rs, rs, uasm_rel_higher(addr));
414		if (ISAFUNC(uasm_rel_hi(addr))) {
415			ISAFUNC(uasm_i_dsll)(buf, rs, rs, 16);
416			ISAFUNC(uasm_i_daddiu)(buf, rs, rs,
417					ISAFUNC(uasm_rel_hi)(addr));
418			ISAFUNC(uasm_i_dsll)(buf, rs, rs, 16);
419		} else
420			ISAFUNC(uasm_i_dsll32)(buf, rs, rs, 0);
421	} else
422		ISAFUNC(uasm_i_lui)(buf, rs, ISAFUNC(uasm_rel_hi(addr)));
423}
424UASM_EXPORT_SYMBOL(ISAFUNC(UASM_i_LA_mostly));
425
426void ISAFUNC(UASM_i_LA)(u32 **buf, unsigned int rs, long addr)
427{
428	ISAFUNC(UASM_i_LA_mostly)(buf, rs, addr);
429	if (ISAFUNC(uasm_rel_lo(addr))) {
430		if (!ISAFUNC(uasm_in_compat_space_p)(addr))
431			ISAFUNC(uasm_i_daddiu)(buf, rs, rs,
432					ISAFUNC(uasm_rel_lo(addr)));
433		else
434			ISAFUNC(uasm_i_addiu)(buf, rs, rs,
435					ISAFUNC(uasm_rel_lo(addr)));
436	}
437}
438UASM_EXPORT_SYMBOL(ISAFUNC(UASM_i_LA));
439
440/* Handle relocations. */
441void ISAFUNC(uasm_r_mips_pc16)(struct uasm_reloc **rel, u32 *addr, int lid)
 
442{
443	(*rel)->addr = addr;
444	(*rel)->type = R_MIPS_PC16;
445	(*rel)->lab = lid;
446	(*rel)++;
447}
448UASM_EXPORT_SYMBOL(ISAFUNC(uasm_r_mips_pc16));
449
450static inline void __resolve_relocs(struct uasm_reloc *rel,
451				    struct uasm_label *lab);
 
 
 
452
453void ISAFUNC(uasm_resolve_relocs)(struct uasm_reloc *rel,
454				  struct uasm_label *lab)
 
 
 
 
 
 
 
 
 
 
 
455{
456	struct uasm_label *l;
457
458	for (; rel->lab != UASM_LABEL_INVALID; rel++)
459		for (l = lab; l->lab != UASM_LABEL_INVALID; l++)
460			if (rel->lab == l->lab)
461				__resolve_relocs(rel, l);
462}
463UASM_EXPORT_SYMBOL(ISAFUNC(uasm_resolve_relocs));
464
465void ISAFUNC(uasm_move_relocs)(struct uasm_reloc *rel, u32 *first, u32 *end,
466			       long off)
467{
468	for (; rel->lab != UASM_LABEL_INVALID; rel++)
469		if (rel->addr >= first && rel->addr < end)
470			rel->addr += off;
471}
472UASM_EXPORT_SYMBOL(ISAFUNC(uasm_move_relocs));
473
474void ISAFUNC(uasm_move_labels)(struct uasm_label *lab, u32 *first, u32 *end,
475			       long off)
476{
477	for (; lab->lab != UASM_LABEL_INVALID; lab++)
478		if (lab->addr >= first && lab->addr < end)
479			lab->addr += off;
480}
481UASM_EXPORT_SYMBOL(ISAFUNC(uasm_move_labels));
482
483void ISAFUNC(uasm_copy_handler)(struct uasm_reloc *rel, struct uasm_label *lab,
484				u32 *first, u32 *end, u32 *target)
 
485{
486	long off = (long)(target - first);
487
488	memcpy(target, first, (end - first) * sizeof(u32));
489
490	ISAFUNC(uasm_move_relocs(rel, first, end, off));
491	ISAFUNC(uasm_move_labels(lab, first, end, off));
492}
493UASM_EXPORT_SYMBOL(ISAFUNC(uasm_copy_handler));
494
495int ISAFUNC(uasm_insn_has_bdelay)(struct uasm_reloc *rel, u32 *addr)
496{
497	for (; rel->lab != UASM_LABEL_INVALID; rel++) {
498		if (rel->addr == addr
499		    && (rel->type == R_MIPS_PC16
500			|| rel->type == R_MIPS_26))
501			return 1;
502	}
503
504	return 0;
505}
506UASM_EXPORT_SYMBOL(ISAFUNC(uasm_insn_has_bdelay));
507
508/* Convenience functions for labeled branches. */
509void ISAFUNC(uasm_il_bltz)(u32 **p, struct uasm_reloc **r, unsigned int reg,
510			   int lid)
511{
512	uasm_r_mips_pc16(r, *p, lid);
513	ISAFUNC(uasm_i_bltz)(p, reg, 0);
514}
515UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bltz));
516
517void ISAFUNC(uasm_il_b)(u32 **p, struct uasm_reloc **r, int lid)
518{
519	uasm_r_mips_pc16(r, *p, lid);
520	ISAFUNC(uasm_i_b)(p, 0);
521}
522UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_b));
523
524void ISAFUNC(uasm_il_beq)(u32 **p, struct uasm_reloc **r, unsigned int r1,
525			  unsigned int r2, int lid)
526{
527	uasm_r_mips_pc16(r, *p, lid);
528	ISAFUNC(uasm_i_beq)(p, r1, r2, 0);
529}
530UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beq));
531
532void ISAFUNC(uasm_il_beqz)(u32 **p, struct uasm_reloc **r, unsigned int reg,
533			   int lid)
534{
535	uasm_r_mips_pc16(r, *p, lid);
536	ISAFUNC(uasm_i_beqz)(p, reg, 0);
537}
538UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beqz));
539
540void ISAFUNC(uasm_il_beqzl)(u32 **p, struct uasm_reloc **r, unsigned int reg,
541			    int lid)
542{
543	uasm_r_mips_pc16(r, *p, lid);
544	ISAFUNC(uasm_i_beqzl)(p, reg, 0);
545}
546UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beqzl));
547
548void ISAFUNC(uasm_il_bne)(u32 **p, struct uasm_reloc **r, unsigned int reg1,
549			  unsigned int reg2, int lid)
 
550{
551	uasm_r_mips_pc16(r, *p, lid);
552	ISAFUNC(uasm_i_bne)(p, reg1, reg2, 0);
553}
554UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bne));
555
556void ISAFUNC(uasm_il_bnez)(u32 **p, struct uasm_reloc **r, unsigned int reg,
557			   int lid)
558{
559	uasm_r_mips_pc16(r, *p, lid);
560	ISAFUNC(uasm_i_bnez)(p, reg, 0);
561}
562UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bnez));
563
564void ISAFUNC(uasm_il_bgezl)(u32 **p, struct uasm_reloc **r, unsigned int reg,
565			    int lid)
566{
567	uasm_r_mips_pc16(r, *p, lid);
568	ISAFUNC(uasm_i_bgezl)(p, reg, 0);
569}
570UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bgezl));
571
572void ISAFUNC(uasm_il_bgez)(u32 **p, struct uasm_reloc **r, unsigned int reg,
573			   int lid)
574{
575	uasm_r_mips_pc16(r, *p, lid);
576	ISAFUNC(uasm_i_bgez)(p, reg, 0);
577}
578UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bgez));
579
580void ISAFUNC(uasm_il_bbit0)(u32 **p, struct uasm_reloc **r, unsigned int reg,
581			    unsigned int bit, int lid)
 
582{
583	uasm_r_mips_pc16(r, *p, lid);
584	ISAFUNC(uasm_i_bbit0)(p, reg, bit, 0);
585}
586UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bbit0));
587
588void ISAFUNC(uasm_il_bbit1)(u32 **p, struct uasm_reloc **r, unsigned int reg,
589			    unsigned int bit, int lid)
 
590{
591	uasm_r_mips_pc16(r, *p, lid);
592	ISAFUNC(uasm_i_bbit1)(p, reg, bit, 0);
593}
594UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bbit1));