tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 UASM_EXPORT_SYMBOL(sym) EXPORT_SYMBOL(sym)
17#else
18#define UASM_EXPORT_SYMBOL(sym)
19#endif
20
21#define _UASM_ISA_CLASSIC 0
22#define _UASM_ISA_MICROMIPS 1
23
24#ifndef UASM_ISA
25#ifdef CONFIG_CPU_MICROMIPS
26#define UASM_ISA _UASM_ISA_MICROMIPS
27#else
28#define UASM_ISA _UASM_ISA_CLASSIC
29#endif
30#endif
31
32#if (UASM_ISA == _UASM_ISA_CLASSIC)
33#ifdef CONFIG_CPU_MICROMIPS
34#define ISAOPC(op) CL_uasm_i##op
35#define ISAFUNC(x) CL_##x
36#else
37#define ISAOPC(op) uasm_i##op
38#define ISAFUNC(x) x
39#endif
40#elif (UASM_ISA == _UASM_ISA_MICROMIPS)
41#ifdef CONFIG_CPU_MICROMIPS
42#define ISAOPC(op) uasm_i##op
43#define ISAFUNC(x) x
44#else
45#define ISAOPC(op) MM_uasm_i##op
46#define ISAFUNC(x) MM_##x
47#endif
48#else
49#error Unsupported micro-assembler ISA!!!
50#endif
51
52#define Ip_u1u2u3(op) \
53void ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
54
55#define Ip_u2u1u3(op) \
56void ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
57
58#define Ip_u3u2u1(op) \
59void ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
60
61#define Ip_u3u1u2(op) \
62void ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
63
64#define Ip_u1u2s3(op) \
65void ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, signed int c)
66
67#define Ip_u2s3u1(op) \
68void ISAOPC(op)(u32 **buf, unsigned int a, signed int b, unsigned int c)
69
70#define Ip_s3s1s2(op) \
71void ISAOPC(op)(u32 **buf, int a, int b, int c)
72
73#define Ip_u2u1s3(op) \
74void ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, signed int c)
75
76#define Ip_u2u1msbu3(op) \
77void ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c, \
78 unsigned int d)
79
80#define Ip_u1u2(op) \
81void ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b)
82
83#define Ip_u2u1(op) \
84void ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b)
85
86#define Ip_u1s2(op) \
87void ISAOPC(op)(u32 **buf, unsigned int a, signed int b)
88
89#define Ip_u1(op) void ISAOPC(op)(u32 **buf, unsigned int a)
90
91#define Ip_0(op) void ISAOPC(op)(u32 **buf)
92
93Ip_u2u1s3(_addiu);
94Ip_u3u1u2(_addu);
95Ip_u3u1u2(_and);
96Ip_u2u1u3(_andi);
97Ip_u1u2s3(_bbit0);
98Ip_u1u2s3(_bbit1);
99Ip_u1u2s3(_beq);
100Ip_u1u2s3(_beql);
101Ip_u1s2(_bgez);
102Ip_u1s2(_bgezl);
103Ip_u1s2(_bltz);
104Ip_u1s2(_bltzl);
105Ip_u1u2s3(_bne);
106Ip_u2s3u1(_cache);
107Ip_u1u2(_cfc1);
108Ip_u2u1(_cfcmsa);
109Ip_u1u2(_ctc1);
110Ip_u2u1(_ctcmsa);
111Ip_u2u1s3(_daddiu);
112Ip_u3u1u2(_daddu);
113Ip_u1(_di);
114Ip_u2u1msbu3(_dins);
115Ip_u2u1msbu3(_dinsm);
116Ip_u1u2(_divu);
117Ip_u1u2u3(_dmfc0);
118Ip_u1u2u3(_dmtc0);
119Ip_u2u1u3(_drotr);
120Ip_u2u1u3(_drotr32);
121Ip_u2u1u3(_dsll);
122Ip_u2u1u3(_dsll32);
123Ip_u2u1u3(_dsra);
124Ip_u2u1u3(_dsrl);
125Ip_u2u1u3(_dsrl32);
126Ip_u3u1u2(_dsubu);
127Ip_0(_eret);
128Ip_u2u1msbu3(_ext);
129Ip_u2u1msbu3(_ins);
130Ip_u1(_j);
131Ip_u1(_jal);
132Ip_u2u1(_jalr);
133Ip_u1(_jr);
134Ip_u2s3u1(_lb);
135Ip_u2s3u1(_ld);
136Ip_u3u1u2(_ldx);
137Ip_u2s3u1(_lh);
138Ip_u2s3u1(_ll);
139Ip_u2s3u1(_lld);
140Ip_u1s2(_lui);
141Ip_u2s3u1(_lw);
142Ip_u3u1u2(_lwx);
143Ip_u1u2u3(_mfc0);
144Ip_u1u2u3(_mfhc0);
145Ip_u1(_mfhi);
146Ip_u1(_mflo);
147Ip_u1u2u3(_mtc0);
148Ip_u1u2u3(_mthc0);
149Ip_u1(_mthi);
150Ip_u1(_mtlo);
151Ip_u3u1u2(_mul);
152Ip_u3u1u2(_or);
153Ip_u2u1u3(_ori);
154Ip_u2s3u1(_pref);
155Ip_0(_rfe);
156Ip_u2u1u3(_rotr);
157Ip_u2s3u1(_sc);
158Ip_u2s3u1(_scd);
159Ip_u2s3u1(_sd);
160Ip_u2u1u3(_sll);
161Ip_u3u2u1(_sllv);
162Ip_s3s1s2(_slt);
163Ip_u2u1s3(_sltiu);
164Ip_u3u1u2(_sltu);
165Ip_u2u1u3(_sra);
166Ip_u2u1u3(_srl);
167Ip_u3u2u1(_srlv);
168Ip_u3u1u2(_subu);
169Ip_u2s3u1(_sw);
170Ip_u1(_sync);
171Ip_u1(_syscall);
172Ip_0(_tlbp);
173Ip_0(_tlbr);
174Ip_0(_tlbwi);
175Ip_0(_tlbwr);
176Ip_u1(_wait);
177Ip_u2u1(_wsbh);
178Ip_u3u1u2(_xor);
179Ip_u2u1u3(_xori);
180Ip_u2u1(_yield);
181Ip_u1u2(_ldpte);
182Ip_u2u1u3(_lddir);
183
184/* Handle labels. */
185struct uasm_label {
186 u32 *addr;
187 int lab;
188};
189
190void ISAFUNC(uasm_build_label)(struct uasm_label **lab, u32 *addr,
191 int lid);
192#ifdef CONFIG_64BIT
193int ISAFUNC(uasm_in_compat_space_p)(long addr);
194#endif
195int ISAFUNC(uasm_rel_hi)(long val);
196int ISAFUNC(uasm_rel_lo)(long val);
197void ISAFUNC(UASM_i_LA_mostly)(u32 **buf, unsigned int rs, long addr);
198void ISAFUNC(UASM_i_LA)(u32 **buf, unsigned int rs, long addr);
199
200#define UASM_L_LA(lb) \
201static inline void ISAFUNC(uasm_l##lb)(struct uasm_label **lab, u32 *addr) \
202{ \
203 ISAFUNC(uasm_build_label)(lab, addr, label##lb); \
204}
205
206/* convenience macros for instructions */
207#ifdef CONFIG_64BIT
208# define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_daddiu(buf, rs, rt, val)
209# define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_daddu(buf, rs, rt, rd)
210# define UASM_i_LL(buf, rs, rt, off) uasm_i_lld(buf, rs, rt, off)
211# define UASM_i_LW(buf, rs, rt, off) uasm_i_ld(buf, rs, rt, off)
212# define UASM_i_LWX(buf, rs, rt, rd) uasm_i_ldx(buf, rs, rt, rd)
213# define UASM_i_MFC0(buf, rt, rd...) uasm_i_dmfc0(buf, rt, rd)
214# define UASM_i_MTC0(buf, rt, rd...) uasm_i_dmtc0(buf, rt, rd)
215# define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_drotr(buf, rs, rt, sh)
216# define UASM_i_SC(buf, rs, rt, off) uasm_i_scd(buf, rs, rt, off)
217# define UASM_i_SLL(buf, rs, rt, sh) uasm_i_dsll(buf, rs, rt, sh)
218# define UASM_i_SRA(buf, rs, rt, sh) uasm_i_dsra(buf, rs, rt, sh)
219# define UASM_i_SRL(buf, rs, rt, sh) uasm_i_dsrl(buf, rs, rt, sh)
220# define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_dsrl_safe(buf, rs, rt, sh)
221# define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_dsubu(buf, rs, rt, rd)
222# define UASM_i_SW(buf, rs, rt, off) uasm_i_sd(buf, rs, rt, off)
223#else
224# define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_addiu(buf, rs, rt, val)
225# define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_addu(buf, rs, rt, rd)
226# define UASM_i_LL(buf, rs, rt, off) uasm_i_ll(buf, rs, rt, off)
227# define UASM_i_LW(buf, rs, rt, off) uasm_i_lw(buf, rs, rt, off)
228# define UASM_i_LWX(buf, rs, rt, rd) uasm_i_lwx(buf, rs, rt, rd)
229# define UASM_i_MFC0(buf, rt, rd...) uasm_i_mfc0(buf, rt, rd)
230# define UASM_i_MTC0(buf, rt, rd...) uasm_i_mtc0(buf, rt, rd)
231# define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_rotr(buf, rs, rt, sh)
232# define UASM_i_SC(buf, rs, rt, off) uasm_i_sc(buf, rs, rt, off)
233# define UASM_i_SLL(buf, rs, rt, sh) uasm_i_sll(buf, rs, rt, sh)
234# define UASM_i_SRA(buf, rs, rt, sh) uasm_i_sra(buf, rs, rt, sh)
235# define UASM_i_SRL(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
236# define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
237# define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_subu(buf, rs, rt, rd)
238# define UASM_i_SW(buf, rs, rt, off) uasm_i_sw(buf, rs, rt, off)
239#endif
240
241#define uasm_i_b(buf, off) uasm_i_beq(buf, 0, 0, off)
242#define uasm_i_beqz(buf, rs, off) uasm_i_beq(buf, rs, 0, off)
243#define uasm_i_beqzl(buf, rs, off) uasm_i_beql(buf, rs, 0, off)
244#define uasm_i_bnez(buf, rs, off) uasm_i_bne(buf, rs, 0, off)
245#define uasm_i_bnezl(buf, rs, off) uasm_i_bnel(buf, rs, 0, off)
246#define uasm_i_ehb(buf) uasm_i_sll(buf, 0, 0, 3)
247#define uasm_i_move(buf, a, b) UASM_i_ADDU(buf, a, 0, b)
248#define uasm_i_nop(buf) uasm_i_sll(buf, 0, 0, 0)
249#define uasm_i_ssnop(buf) uasm_i_sll(buf, 0, 0, 1)
250
251static inline void uasm_i_drotr_safe(u32 **p, unsigned int a1,
252 unsigned int a2, unsigned int a3)
253{
254 if (a3 < 32)
255 ISAOPC(_drotr)(p, a1, a2, a3);
256 else
257 ISAOPC(_drotr32)(p, a1, a2, a3 - 32);
258}
259
260static inline void uasm_i_dsll_safe(u32 **p, unsigned int a1,
261 unsigned int a2, unsigned int a3)
262{
263 if (a3 < 32)
264 ISAOPC(_dsll)(p, a1, a2, a3);
265 else
266 ISAOPC(_dsll32)(p, a1, a2, a3 - 32);
267}
268
269static inline void uasm_i_dsrl_safe(u32 **p, unsigned int a1,
270 unsigned int a2, unsigned int a3)
271{
272 if (a3 < 32)
273 ISAOPC(_dsrl)(p, a1, a2, a3);
274 else
275 ISAOPC(_dsrl32)(p, a1, a2, a3 - 32);
276}
277
278/* Handle relocations. */
279struct uasm_reloc {
280 u32 *addr;
281 unsigned int type;
282 int lab;
283};
284
285/* This is zero so we can use zeroed label arrays. */
286#define UASM_LABEL_INVALID 0
287
288void uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid);
289void uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab);
290void uasm_move_relocs(struct uasm_reloc *rel, u32 *first, u32 *end, long off);
291void uasm_move_labels(struct uasm_label *lab, u32 *first, u32 *end, long off);
292void uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab,
293 u32 *first, u32 *end, u32 *target);
294int uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr);
295
296/* Convenience functions for labeled branches. */
297void uasm_il_b(u32 **p, struct uasm_reloc **r, int lid);
298void uasm_il_bbit0(u32 **p, struct uasm_reloc **r, unsigned int reg,
299 unsigned int bit, int lid);
300void uasm_il_bbit1(u32 **p, struct uasm_reloc **r, unsigned int reg,
301 unsigned int bit, int lid);
302void uasm_il_beq(u32 **p, struct uasm_reloc **r, unsigned int r1,
303 unsigned int r2, int lid);
304void uasm_il_beqz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
305void uasm_il_beqzl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
306void uasm_il_bgezl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
307void uasm_il_bgez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
308void uasm_il_bltz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
309void uasm_il_bne(u32 **p, struct uasm_reloc **r, unsigned int reg1,
310 unsigned int reg2, int lid);
311void uasm_il_bnez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);