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