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 */
10
11#include <linux/types.h>
12
13#ifdef CONFIG_EXPORT_UASM
14#include <linux/export.h>
15#define __uasminit
16#define __uasminitdata
17#define UASM_EXPORT_SYMBOL(sym) EXPORT_SYMBOL(sym)
18#else
19#define __uasminit __cpuinit
20#define __uasminitdata __cpuinitdata
21#define UASM_EXPORT_SYMBOL(sym)
22#endif
23
24#define Ip_u1u2u3(op) \
25void __uasminit \
26uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
27
28#define Ip_u2u1u3(op) \
29void __uasminit \
30uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
31
32#define Ip_u3u1u2(op) \
33void __uasminit \
34uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
35
36#define Ip_u1u2s3(op) \
37void __uasminit \
38uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
39
40#define Ip_u2s3u1(op) \
41void __uasminit \
42uasm_i##op(u32 **buf, unsigned int a, signed int b, unsigned int c)
43
44#define Ip_u2u1s3(op) \
45void __uasminit \
46uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
47
48#define Ip_u2u1msbu3(op) \
49void __uasminit \
50uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c, \
51 unsigned int d)
52
53#define Ip_u1u2(op) \
54void __uasminit uasm_i##op(u32 **buf, unsigned int a, unsigned int b)
55
56#define Ip_u1s2(op) \
57void __uasminit uasm_i##op(u32 **buf, unsigned int a, signed int b)
58
59#define Ip_u1(op) void __uasminit uasm_i##op(u32 **buf, unsigned int a)
60
61#define Ip_0(op) void __uasminit uasm_i##op(u32 **buf)
62
63Ip_u2u1s3(_addiu);
64Ip_u3u1u2(_addu);
65Ip_u2u1u3(_andi);
66Ip_u3u1u2(_and);
67Ip_u1u2s3(_beq);
68Ip_u1u2s3(_beql);
69Ip_u1s2(_bgez);
70Ip_u1s2(_bgezl);
71Ip_u1s2(_bltz);
72Ip_u1s2(_bltzl);
73Ip_u1u2s3(_bne);
74Ip_u2s3u1(_cache);
75Ip_u1u2u3(_dmfc0);
76Ip_u1u2u3(_dmtc0);
77Ip_u2u1s3(_daddiu);
78Ip_u3u1u2(_daddu);
79Ip_u2u1u3(_dsll);
80Ip_u2u1u3(_dsll32);
81Ip_u2u1u3(_dsra);
82Ip_u2u1u3(_dsrl);
83Ip_u2u1u3(_dsrl32);
84Ip_u2u1u3(_drotr);
85Ip_u2u1u3(_drotr32);
86Ip_u3u1u2(_dsubu);
87Ip_0(_eret);
88Ip_u1(_j);
89Ip_u1(_jal);
90Ip_u1(_jr);
91Ip_u2s3u1(_ld);
92Ip_u2s3u1(_ll);
93Ip_u2s3u1(_lld);
94Ip_u1s2(_lui);
95Ip_u2s3u1(_lw);
96Ip_u1u2u3(_mfc0);
97Ip_u1u2u3(_mtc0);
98Ip_u2u1u3(_ori);
99Ip_u3u1u2(_or);
100Ip_u2s3u1(_pref);
101Ip_0(_rfe);
102Ip_u2s3u1(_sc);
103Ip_u2s3u1(_scd);
104Ip_u2s3u1(_sd);
105Ip_u2u1u3(_sll);
106Ip_u2u1u3(_sra);
107Ip_u2u1u3(_srl);
108Ip_u2u1u3(_rotr);
109Ip_u3u1u2(_subu);
110Ip_u2s3u1(_sw);
111Ip_0(_tlbp);
112Ip_0(_tlbr);
113Ip_0(_tlbwi);
114Ip_0(_tlbwr);
115Ip_u3u1u2(_xor);
116Ip_u2u1u3(_xori);
117Ip_u2u1msbu3(_dins);
118Ip_u2u1msbu3(_dinsm);
119Ip_u1(_syscall);
120Ip_u1u2s3(_bbit0);
121Ip_u1u2s3(_bbit1);
122Ip_u3u1u2(_lwx);
123Ip_u3u1u2(_ldx);
124
125/* Handle labels. */
126struct uasm_label {
127 u32 *addr;
128 int lab;
129};
130
131void __uasminit uasm_build_label(struct uasm_label **lab, u32 *addr, int lid);
132#ifdef CONFIG_64BIT
133int uasm_in_compat_space_p(long addr);
134#endif
135int uasm_rel_hi(long val);
136int uasm_rel_lo(long val);
137void UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr);
138void UASM_i_LA(u32 **buf, unsigned int rs, long addr);
139
140#define UASM_L_LA(lb) \
141static inline void __uasminit uasm_l##lb(struct uasm_label **lab, u32 *addr) \
142{ \
143 uasm_build_label(lab, addr, label##lb); \
144}
145
146/* convenience macros for instructions */
147#ifdef CONFIG_64BIT
148# define UASM_i_LW(buf, rs, rt, off) uasm_i_ld(buf, rs, rt, off)
149# define UASM_i_SW(buf, rs, rt, off) uasm_i_sd(buf, rs, rt, off)
150# define UASM_i_SLL(buf, rs, rt, sh) uasm_i_dsll(buf, rs, rt, sh)
151# define UASM_i_SRA(buf, rs, rt, sh) uasm_i_dsra(buf, rs, rt, sh)
152# define UASM_i_SRL(buf, rs, rt, sh) uasm_i_dsrl(buf, rs, rt, sh)
153# define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_dsrl_safe(buf, rs, rt, sh)
154# define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_drotr(buf, rs, rt, sh)
155# define UASM_i_MFC0(buf, rt, rd...) uasm_i_dmfc0(buf, rt, rd)
156# define UASM_i_MTC0(buf, rt, rd...) uasm_i_dmtc0(buf, rt, rd)
157# define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_daddiu(buf, rs, rt, val)
158# define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_daddu(buf, rs, rt, rd)
159# define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_dsubu(buf, rs, rt, rd)
160# define UASM_i_LL(buf, rs, rt, off) uasm_i_lld(buf, rs, rt, off)
161# define UASM_i_SC(buf, rs, rt, off) uasm_i_scd(buf, rs, rt, off)
162# define UASM_i_LWX(buf, rs, rt, rd) uasm_i_ldx(buf, rs, rt, rd)
163#else
164# define UASM_i_LW(buf, rs, rt, off) uasm_i_lw(buf, rs, rt, off)
165# define UASM_i_SW(buf, rs, rt, off) uasm_i_sw(buf, rs, rt, off)
166# define UASM_i_SLL(buf, rs, rt, sh) uasm_i_sll(buf, rs, rt, sh)
167# define UASM_i_SRA(buf, rs, rt, sh) uasm_i_sra(buf, rs, rt, sh)
168# define UASM_i_SRL(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
169# define UASM_i_SRL_SAFE(buf, rs, rt, sh) uasm_i_srl(buf, rs, rt, sh)
170# define UASM_i_ROTR(buf, rs, rt, sh) uasm_i_rotr(buf, rs, rt, sh)
171# define UASM_i_MFC0(buf, rt, rd...) uasm_i_mfc0(buf, rt, rd)
172# define UASM_i_MTC0(buf, rt, rd...) uasm_i_mtc0(buf, rt, rd)
173# define UASM_i_ADDIU(buf, rs, rt, val) uasm_i_addiu(buf, rs, rt, val)
174# define UASM_i_ADDU(buf, rs, rt, rd) uasm_i_addu(buf, rs, rt, rd)
175# define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_subu(buf, rs, rt, rd)
176# define UASM_i_LL(buf, rs, rt, off) uasm_i_ll(buf, rs, rt, off)
177# define UASM_i_SC(buf, rs, rt, off) uasm_i_sc(buf, rs, rt, off)
178# define UASM_i_LWX(buf, rs, rt, rd) uasm_i_lwx(buf, rs, rt, rd)
179#endif
180
181#define uasm_i_b(buf, off) uasm_i_beq(buf, 0, 0, off)
182#define uasm_i_beqz(buf, rs, off) uasm_i_beq(buf, rs, 0, off)
183#define uasm_i_beqzl(buf, rs, off) uasm_i_beql(buf, rs, 0, off)
184#define uasm_i_bnez(buf, rs, off) uasm_i_bne(buf, rs, 0, off)
185#define uasm_i_bnezl(buf, rs, off) uasm_i_bnel(buf, rs, 0, off)
186#define uasm_i_move(buf, a, b) UASM_i_ADDU(buf, a, 0, b)
187#define uasm_i_nop(buf) uasm_i_sll(buf, 0, 0, 0)
188#define uasm_i_ssnop(buf) uasm_i_sll(buf, 0, 0, 1)
189#define uasm_i_ehb(buf) uasm_i_sll(buf, 0, 0, 3)
190
191static inline void uasm_i_dsrl_safe(u32 **p, unsigned int a1,
192 unsigned int a2, unsigned int a3)
193{
194 if (a3 < 32)
195 uasm_i_dsrl(p, a1, a2, a3);
196 else
197 uasm_i_dsrl32(p, a1, a2, a3 - 32);
198}
199
200static inline void uasm_i_drotr_safe(u32 **p, unsigned int a1,
201 unsigned int a2, unsigned int a3)
202{
203 if (a3 < 32)
204 uasm_i_drotr(p, a1, a2, a3);
205 else
206 uasm_i_drotr32(p, a1, a2, a3 - 32);
207}
208
209static inline void uasm_i_dsll_safe(u32 **p, unsigned int a1,
210 unsigned int a2, unsigned int a3)
211{
212 if (a3 < 32)
213 uasm_i_dsll(p, a1, a2, a3);
214 else
215 uasm_i_dsll32(p, a1, a2, a3 - 32);
216}
217
218/* Handle relocations. */
219struct uasm_reloc {
220 u32 *addr;
221 unsigned int type;
222 int lab;
223};
224
225/* This is zero so we can use zeroed label arrays. */
226#define UASM_LABEL_INVALID 0
227
228void uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid);
229void uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab);
230void uasm_move_relocs(struct uasm_reloc *rel, u32 *first, u32 *end, long off);
231void uasm_move_labels(struct uasm_label *lab, u32 *first, u32 *end, long off);
232void uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab,
233 u32 *first, u32 *end, u32 *target);
234int uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr);
235
236/* Convenience functions for labeled branches. */
237void uasm_il_bltz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
238void uasm_il_b(u32 **p, struct uasm_reloc **r, int lid);
239void uasm_il_beqz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
240void uasm_il_beqzl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
241void uasm_il_bne(u32 **p, struct uasm_reloc **r, unsigned int reg1,
242 unsigned int reg2, int lid);
243void uasm_il_bnez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
244void uasm_il_bgezl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
245void uasm_il_bgez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid);
246void uasm_il_bbit0(u32 **p, struct uasm_reloc **r, unsigned int reg,
247 unsigned int bit, int lid);
248void uasm_il_bbit1(u32 **p, struct uasm_reloc **r, unsigned int reg,
249 unsigned int bit, int lid);