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2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01 
 kernel/arch/powerpc/net/bpf_jit.h
....@@ -1,13 +1,9 @@
1
+/* SPDX-License-Identifier: GPL-2.0-only */
12 /*
23  * bpf_jit.h: BPF JIT compiler for PPC
34  *
45  * Copyright 2011 Matt Evans <matt@ozlabs.org>, IBM Corporation
56  * 	     2016 Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
6
- *
7
- * This program is free software; you can redistribute it and/or
8
- * modify it under the terms of the GNU General Public License
9
- * as published by the Free Software Foundation; version 2
10
- * of the License.
117  */
128 #ifndef _BPF_JIT_H
139 #define _BPF_JIT_H
....@@ -15,6 +11,7 @@
1511 #ifndef __ASSEMBLY__
1612 
1713 #include <asm/types.h>
14
+#include <asm/ppc-opcode.h>
1815 #include <asm/code-patching.h>
1916 
2017 #ifdef PPC64_ELF_ABI_v1
....@@ -23,158 +20,9 @@
2320 #define FUNCTION_DESCR_SIZE	0
2421 #endif
2522 
26
-/*
27
- * 16-bit immediate helper macros: HA() is for use with sign-extending instrs
28
- * (e.g. LD, ADDI).  If the bottom 16 bits is "-ve", add another bit into the
29
- * top half to negate the effect (i.e. 0xffff + 1 = 0x(1)0000).
30
- */
31
-#define IMM_H(i)		((uintptr_t)(i)>>16)
32
-#define IMM_HA(i)		(((uintptr_t)(i)>>16) +			      \
33
-					(((uintptr_t)(i) & 0x8000) >> 15))
34
-#define IMM_L(i)		((uintptr_t)(i) & 0xffff)
35
-
3623 #define PLANT_INSTR(d, idx, instr)					      \
3724 	do { if (d) { (d)[idx] = instr; } idx++; } while (0)
3825 #define EMIT(instr)		PLANT_INSTR(image, ctx->idx, instr)
39
-
40
-#define PPC_NOP()		EMIT(PPC_INST_NOP)
41
-#define PPC_BLR()		EMIT(PPC_INST_BLR)
42
-#define PPC_BLRL()		EMIT(PPC_INST_BLRL)
43
-#define PPC_MTLR(r)		EMIT(PPC_INST_MTLR | ___PPC_RT(r))
44
-#define PPC_BCTR()		EMIT(PPC_INST_BCTR)
45
-#define PPC_MTCTR(r)		EMIT(PPC_INST_MTCTR | ___PPC_RT(r))
46
-#define PPC_ADDI(d, a, i)	EMIT(PPC_INST_ADDI | ___PPC_RT(d) |	      \
47
-				     ___PPC_RA(a) | IMM_L(i))
48
-#define PPC_MR(d, a)		PPC_OR(d, a, a)
49
-#define PPC_LI(r, i)		PPC_ADDI(r, 0, i)
50
-#define PPC_ADDIS(d, a, i)	EMIT(PPC_INST_ADDIS |			      \
51
-				     ___PPC_RT(d) | ___PPC_RA(a) | IMM_L(i))
52
-#define PPC_LIS(r, i)		PPC_ADDIS(r, 0, i)
53
-#define PPC_STD(r, base, i)	EMIT(PPC_INST_STD | ___PPC_RS(r) |	      \
54
-				     ___PPC_RA(base) | ((i) & 0xfffc))
55
-#define PPC_STDX(r, base, b)	EMIT(PPC_INST_STDX | ___PPC_RS(r) |	      \
56
-				     ___PPC_RA(base) | ___PPC_RB(b))
57
-#define PPC_STDU(r, base, i)	EMIT(PPC_INST_STDU | ___PPC_RS(r) |	      \
58
-				     ___PPC_RA(base) | ((i) & 0xfffc))
59
-#define PPC_STW(r, base, i)	EMIT(PPC_INST_STW | ___PPC_RS(r) |	      \
60
-				     ___PPC_RA(base) | IMM_L(i))
61
-#define PPC_STWU(r, base, i)	EMIT(PPC_INST_STWU | ___PPC_RS(r) |	      \
62
-				     ___PPC_RA(base) | IMM_L(i))
63
-#define PPC_STH(r, base, i)	EMIT(PPC_INST_STH | ___PPC_RS(r) |	      \
64
-				     ___PPC_RA(base) | IMM_L(i))
65
-#define PPC_STB(r, base, i)	EMIT(PPC_INST_STB | ___PPC_RS(r) |	      \
66
-				     ___PPC_RA(base) | IMM_L(i))
67
-
68
-#define PPC_LBZ(r, base, i)	EMIT(PPC_INST_LBZ | ___PPC_RT(r) |	      \
69
-				     ___PPC_RA(base) | IMM_L(i))
70
-#define PPC_LD(r, base, i)	EMIT(PPC_INST_LD | ___PPC_RT(r) |	      \
71
-				     ___PPC_RA(base) | ((i) & 0xfffc))
72
-#define PPC_LDX(r, base, b)	EMIT(PPC_INST_LDX | ___PPC_RT(r) |	      \
73
-				     ___PPC_RA(base) | ___PPC_RB(b))
74
-#define PPC_LWZ(r, base, i)	EMIT(PPC_INST_LWZ | ___PPC_RT(r) |	      \
75
-				     ___PPC_RA(base) | IMM_L(i))
76
-#define PPC_LHZ(r, base, i)	EMIT(PPC_INST_LHZ | ___PPC_RT(r) |	      \
77
-				     ___PPC_RA(base) | IMM_L(i))
78
-#define PPC_LHBRX(r, base, b)	EMIT(PPC_INST_LHBRX | ___PPC_RT(r) |	      \
79
-				     ___PPC_RA(base) | ___PPC_RB(b))
80
-#define PPC_LDBRX(r, base, b)	EMIT(PPC_INST_LDBRX | ___PPC_RT(r) |	      \
81
-				     ___PPC_RA(base) | ___PPC_RB(b))
82
-
83
-#define PPC_BPF_LDARX(t, a, b, eh) EMIT(PPC_INST_LDARX | ___PPC_RT(t) |	      \
84
-					___PPC_RA(a) | ___PPC_RB(b) |	      \
85
-					__PPC_EH(eh))
86
-#define PPC_BPF_LWARX(t, a, b, eh) EMIT(PPC_INST_LWARX | ___PPC_RT(t) |	      \
87
-					___PPC_RA(a) | ___PPC_RB(b) |	      \
88
-					__PPC_EH(eh))
89
-#define PPC_BPF_STWCX(s, a, b)	EMIT(PPC_INST_STWCX | ___PPC_RS(s) |	      \
90
-					___PPC_RA(a) | ___PPC_RB(b))
91
-#define PPC_BPF_STDCX(s, a, b)	EMIT(PPC_INST_STDCX | ___PPC_RS(s) |	      \
92
-					___PPC_RA(a) | ___PPC_RB(b))
93
-#define PPC_CMPWI(a, i)		EMIT(PPC_INST_CMPWI | ___PPC_RA(a) | IMM_L(i))
94
-#define PPC_CMPDI(a, i)		EMIT(PPC_INST_CMPDI | ___PPC_RA(a) | IMM_L(i))
95
-#define PPC_CMPW(a, b)		EMIT(PPC_INST_CMPW | ___PPC_RA(a) |	      \
96
-					___PPC_RB(b))
97
-#define PPC_CMPD(a, b)		EMIT(PPC_INST_CMPD | ___PPC_RA(a) |	      \
98
-					___PPC_RB(b))
99
-#define PPC_CMPLWI(a, i)	EMIT(PPC_INST_CMPLWI | ___PPC_RA(a) | IMM_L(i))
100
-#define PPC_CMPLDI(a, i)	EMIT(PPC_INST_CMPLDI | ___PPC_RA(a) | IMM_L(i))
101
-#define PPC_CMPLW(a, b)		EMIT(PPC_INST_CMPLW | ___PPC_RA(a) |	      \
102
-					___PPC_RB(b))
103
-#define PPC_CMPLD(a, b)		EMIT(PPC_INST_CMPLD | ___PPC_RA(a) |	      \
104
-					___PPC_RB(b))
105
-
106
-#define PPC_SUB(d, a, b)	EMIT(PPC_INST_SUB | ___PPC_RT(d) |	      \
107
-				     ___PPC_RB(a) | ___PPC_RA(b))
108
-#define PPC_ADD(d, a, b)	EMIT(PPC_INST_ADD | ___PPC_RT(d) |	      \
109
-				     ___PPC_RA(a) | ___PPC_RB(b))
110
-#define PPC_MULD(d, a, b)	EMIT(PPC_INST_MULLD | ___PPC_RT(d) |	      \
111
-				     ___PPC_RA(a) | ___PPC_RB(b))
112
-#define PPC_MULW(d, a, b)	EMIT(PPC_INST_MULLW | ___PPC_RT(d) |	      \
113
-				     ___PPC_RA(a) | ___PPC_RB(b))
114
-#define PPC_MULHWU(d, a, b)	EMIT(PPC_INST_MULHWU | ___PPC_RT(d) |	      \
115
-				     ___PPC_RA(a) | ___PPC_RB(b))
116
-#define PPC_MULI(d, a, i)	EMIT(PPC_INST_MULLI | ___PPC_RT(d) |	      \
117
-				     ___PPC_RA(a) | IMM_L(i))
118
-#define PPC_DIVWU(d, a, b)	EMIT(PPC_INST_DIVWU | ___PPC_RT(d) |	      \
119
-				     ___PPC_RA(a) | ___PPC_RB(b))
120
-#define PPC_DIVDU(d, a, b)	EMIT(PPC_INST_DIVDU | ___PPC_RT(d) |	      \
121
-				     ___PPC_RA(a) | ___PPC_RB(b))
122
-#define PPC_AND(d, a, b)	EMIT(PPC_INST_AND | ___PPC_RA(d) |	      \
123
-				     ___PPC_RS(a) | ___PPC_RB(b))
124
-#define PPC_ANDI(d, a, i)	EMIT(PPC_INST_ANDI | ___PPC_RA(d) |	      \
125
-				     ___PPC_RS(a) | IMM_L(i))
126
-#define PPC_AND_DOT(d, a, b)	EMIT(PPC_INST_ANDDOT | ___PPC_RA(d) |	      \
127
-				     ___PPC_RS(a) | ___PPC_RB(b))
128
-#define PPC_OR(d, a, b)		EMIT(PPC_INST_OR | ___PPC_RA(d) |	      \
129
-				     ___PPC_RS(a) | ___PPC_RB(b))
130
-#define PPC_MR(d, a)		PPC_OR(d, a, a)
131
-#define PPC_ORI(d, a, i)	EMIT(PPC_INST_ORI | ___PPC_RA(d) |	      \
132
-				     ___PPC_RS(a) | IMM_L(i))
133
-#define PPC_ORIS(d, a, i)	EMIT(PPC_INST_ORIS | ___PPC_RA(d) |	      \
134
-				     ___PPC_RS(a) | IMM_L(i))
135
-#define PPC_XOR(d, a, b)	EMIT(PPC_INST_XOR | ___PPC_RA(d) |	      \
136
-				     ___PPC_RS(a) | ___PPC_RB(b))
137
-#define PPC_XORI(d, a, i)	EMIT(PPC_INST_XORI | ___PPC_RA(d) |	      \
138
-				     ___PPC_RS(a) | IMM_L(i))
139
-#define PPC_XORIS(d, a, i)	EMIT(PPC_INST_XORIS | ___PPC_RA(d) |	      \
140
-				     ___PPC_RS(a) | IMM_L(i))
141
-#define PPC_EXTSW(d, a)		EMIT(PPC_INST_EXTSW | ___PPC_RA(d) |	      \
142
-				     ___PPC_RS(a))
143
-#define PPC_SLW(d, a, s)	EMIT(PPC_INST_SLW | ___PPC_RA(d) |	      \
144
-				     ___PPC_RS(a) | ___PPC_RB(s))
145
-#define PPC_SLD(d, a, s)	EMIT(PPC_INST_SLD | ___PPC_RA(d) |	      \
146
-				     ___PPC_RS(a) | ___PPC_RB(s))
147
-#define PPC_SRW(d, a, s)	EMIT(PPC_INST_SRW | ___PPC_RA(d) |	      \
148
-				     ___PPC_RS(a) | ___PPC_RB(s))
149
-#define PPC_SRD(d, a, s)	EMIT(PPC_INST_SRD | ___PPC_RA(d) |	      \
150
-				     ___PPC_RS(a) | ___PPC_RB(s))
151
-#define PPC_SRAD(d, a, s)	EMIT(PPC_INST_SRAD | ___PPC_RA(d) |	      \
152
-				     ___PPC_RS(a) | ___PPC_RB(s))
153
-#define PPC_SRADI(d, a, i)	EMIT(PPC_INST_SRADI | ___PPC_RA(d) |	      \
154
-				     ___PPC_RS(a) | __PPC_SH64(i))
155
-#define PPC_RLWINM(d, a, i, mb, me)	EMIT(PPC_INST_RLWINM | ___PPC_RA(d) | \
156
-					___PPC_RS(a) | __PPC_SH(i) |	      \
157
-					__PPC_MB(mb) | __PPC_ME(me))
158
-#define PPC_RLWIMI(d, a, i, mb, me)	EMIT(PPC_INST_RLWIMI | ___PPC_RA(d) | \
159
-					___PPC_RS(a) | __PPC_SH(i) |	      \
160
-					__PPC_MB(mb) | __PPC_ME(me))
161
-#define PPC_RLDICL(d, a, i, mb)		EMIT(PPC_INST_RLDICL | ___PPC_RA(d) | \
162
-					___PPC_RS(a) | __PPC_SH64(i) |	      \
163
-					__PPC_MB64(mb))
164
-#define PPC_RLDICR(d, a, i, me)		EMIT(PPC_INST_RLDICR | ___PPC_RA(d) | \
165
-					___PPC_RS(a) | __PPC_SH64(i) |	      \
166
-					__PPC_ME64(me))
167
-
168
-/* slwi = rlwinm Rx, Ry, n, 0, 31-n */
169
-#define PPC_SLWI(d, a, i)	PPC_RLWINM(d, a, i, 0, 31-(i))
170
-/* srwi = rlwinm Rx, Ry, 32-n, n, 31 */
171
-#define PPC_SRWI(d, a, i)	PPC_RLWINM(d, a, 32-(i), i, 31)
172
-/* sldi = rldicr Rx, Ry, n, 63-n */
173
-#define PPC_SLDI(d, a, i)	PPC_RLDICR(d, a, i, 63-(i))
174
-/* sldi = rldicl Rx, Ry, 64-n, n */
175
-#define PPC_SRDI(d, a, i)	PPC_RLDICL(d, a, 64-(i), i)
176
-
177
-#define PPC_NEG(d, a)		EMIT(PPC_INST_NEG | ___PPC_RT(d) | ___PPC_RA(a))
17826 
17927 /* Long jump; (unconditional 'branch') */
18028 #define PPC_JMP(dest)							      \
....@@ -201,11 +49,11 @@
20149 #define PPC_LI32(d, i)		do {					      \
20250 		if ((int)(uintptr_t)(i) >= -32768 &&			      \
20351 				(int)(uintptr_t)(i) < 32768)		      \
204
-			PPC_LI(d, i);					      \
52
+			EMIT(PPC_RAW_LI(d, i));				      \
20553 		else {							      \
206
-			PPC_LIS(d, IMM_H(i));				      \
54
+			EMIT(PPC_RAW_LIS(d, IMM_H(i)));			      \
20755 			if (IMM_L(i))					      \
208
-				PPC_ORI(d, d, IMM_L(i));		      \
56
+				EMIT(PPC_RAW_ORI(d, d, IMM_L(i)));	      \
20957 		} } while(0)
21058 
21159 #define PPC_LI64(d, i)		do {					      \
....@@ -214,19 +62,21 @@
21462 			PPC_LI32(d, i);					      \
21563 		else {							      \
21664 			if (!((uintptr_t)(i) & 0xffff800000000000ULL))	      \
217
-				PPC_LI(d, ((uintptr_t)(i) >> 32) & 0xffff);   \
65
+				EMIT(PPC_RAW_LI(d, ((uintptr_t)(i) >> 32) &   \
66
+						0xffff));		      \
21867 			else {						      \
219
-				PPC_LIS(d, ((uintptr_t)(i) >> 48));	      \
68
+				EMIT(PPC_RAW_LIS(d, ((uintptr_t)(i) >> 48))); \
22069 				if ((uintptr_t)(i) & 0x0000ffff00000000ULL)   \
221
-					PPC_ORI(d, d,			      \
222
-					  ((uintptr_t)(i) >> 32) & 0xffff);   \
70
+					EMIT(PPC_RAW_ORI(d, d,		      \
71
+					  ((uintptr_t)(i) >> 32) & 0xffff));  \
22372 			}						      \
224
-			PPC_SLDI(d, d, 32);				      \
73
+			EMIT(PPC_RAW_SLDI(d, d, 32));			      \
22574 			if ((uintptr_t)(i) & 0x00000000ffff0000ULL)	      \
226
-				PPC_ORIS(d, d,				      \
227
-					 ((uintptr_t)(i) >> 16) & 0xffff);    \
75
+				EMIT(PPC_RAW_ORIS(d, d,			      \
76
+					 ((uintptr_t)(i) >> 16) & 0xffff));   \
22877 			if ((uintptr_t)(i) & 0x000000000000ffffULL)	      \
229
-				PPC_ORI(d, d, (uintptr_t)(i) & 0xffff);	      \
78
+				EMIT(PPC_RAW_ORI(d, d, (uintptr_t)(i) &       \
79
+							0xffff));             \
23080 		} } while (0)
23181 
23282 #ifdef CONFIG_PPC64
....@@ -245,7 +95,7 @@
24595 #define PPC_BCC(cond, dest)	do {					      \
24696 		if (is_offset_in_cond_branch_range((long)(dest) - (ctx->idx * 4))) {	\
24797 			PPC_BCC_SHORT(cond, dest);			      \
248
-			PPC_NOP();					      \
98
+			EMIT(PPC_RAW_NOP());				      \
24999 		} else {						      \
250100 			/* Flip the 'T or F' bit to invert comparison */      \
251101 			PPC_BCC_SHORT(cond ^ COND_CMP_TRUE, (ctx->idx+2)*4);  \