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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * ELF definitions for the Hexagon architecture
4 *
5 * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
6 */
7
8#ifndef __ASM_ELF_H
9#define __ASM_ELF_H
10
11#include <asm/ptrace.h>
12#include <asm/user.h>
13#include <linux/elf-em.h>
14
15struct elf32_hdr;
16
17/*
18 * ELF header e_flags defines.
19 */
20
21/* should have stuff like "CPU type" and maybe "ABI version", etc */
22
23/* Hexagon relocations */
24 /* V2 */
25#define R_HEXAGON_NONE 0
26#define R_HEXAGON_B22_PCREL 1
27#define R_HEXAGON_B15_PCREL 2
28#define R_HEXAGON_B7_PCREL 3
29#define R_HEXAGON_LO16 4
30#define R_HEXAGON_HI16 5
31#define R_HEXAGON_32 6
32#define R_HEXAGON_16 7
33#define R_HEXAGON_8 8
34#define R_HEXAGON_GPREL16_0 9
35#define R_HEXAGON_GPREL16_1 10
36#define R_HEXAGON_GPREL16_2 11
37#define R_HEXAGON_GPREL16_3 12
38#define R_HEXAGON_HL16 13
39 /* V3 */
40#define R_HEXAGON_B13_PCREL 14
41 /* V4 */
42#define R_HEXAGON_B9_PCREL 15
43 /* V4 (extenders) */
44#define R_HEXAGON_B32_PCREL_X 16
45#define R_HEXAGON_32_6_X 17
46 /* V4 (extended) */
47#define R_HEXAGON_B22_PCREL_X 18
48#define R_HEXAGON_B15_PCREL_X 19
49#define R_HEXAGON_B13_PCREL_X 20
50#define R_HEXAGON_B9_PCREL_X 21
51#define R_HEXAGON_B7_PCREL_X 22
52#define R_HEXAGON_16_X 23
53#define R_HEXAGON_12_X 24
54#define R_HEXAGON_11_X 25
55#define R_HEXAGON_10_X 26
56#define R_HEXAGON_9_X 27
57#define R_HEXAGON_8_X 28
58#define R_HEXAGON_7_X 29
59#define R_HEXAGON_6_X 30
60 /* V2 PIC */
61#define R_HEXAGON_32_PCREL 31
62#define R_HEXAGON_COPY 32
63#define R_HEXAGON_GLOB_DAT 33
64#define R_HEXAGON_JMP_SLOT 34
65#define R_HEXAGON_RELATIVE 35
66#define R_HEXAGON_PLT_B22_PCREL 36
67#define R_HEXAGON_GOTOFF_LO16 37
68#define R_HEXAGON_GOTOFF_HI16 38
69#define R_HEXAGON_GOTOFF_32 39
70#define R_HEXAGON_GOT_LO16 40
71#define R_HEXAGON_GOT_HI16 41
72#define R_HEXAGON_GOT_32 42
73#define R_HEXAGON_GOT_16 43
74
75/*
76 * ELF register definitions..
77 */
78typedef unsigned long elf_greg_t;
79
80typedef struct user_regs_struct elf_gregset_t;
81#define ELF_NGREG (sizeof(elf_gregset_t)/sizeof(unsigned long))
82
83/* Placeholder */
84typedef unsigned long elf_fpregset_t;
85
86/*
87 * Bypass the whole "regsets" thing for now and use the define.
88 */
89
90#if CONFIG_HEXAGON_ARCH_VERSION >= 4
91#define CS_COPYREGS(DEST,REGS) \
92do {\
93 DEST.cs0 = REGS->cs0;\
94 DEST.cs1 = REGS->cs1;\
95} while (0)
96#else
97#define CS_COPYREGS(DEST,REGS)
98#endif
99
100#define ELF_CORE_COPY_REGS(DEST, REGS) \
101do { \
102 DEST.r0 = REGS->r00; \
103 DEST.r1 = REGS->r01; \
104 DEST.r2 = REGS->r02; \
105 DEST.r3 = REGS->r03; \
106 DEST.r4 = REGS->r04; \
107 DEST.r5 = REGS->r05; \
108 DEST.r6 = REGS->r06; \
109 DEST.r7 = REGS->r07; \
110 DEST.r8 = REGS->r08; \
111 DEST.r9 = REGS->r09; \
112 DEST.r10 = REGS->r10; \
113 DEST.r11 = REGS->r11; \
114 DEST.r12 = REGS->r12; \
115 DEST.r13 = REGS->r13; \
116 DEST.r14 = REGS->r14; \
117 DEST.r15 = REGS->r15; \
118 DEST.r16 = REGS->r16; \
119 DEST.r17 = REGS->r17; \
120 DEST.r18 = REGS->r18; \
121 DEST.r19 = REGS->r19; \
122 DEST.r20 = REGS->r20; \
123 DEST.r21 = REGS->r21; \
124 DEST.r22 = REGS->r22; \
125 DEST.r23 = REGS->r23; \
126 DEST.r24 = REGS->r24; \
127 DEST.r25 = REGS->r25; \
128 DEST.r26 = REGS->r26; \
129 DEST.r27 = REGS->r27; \
130 DEST.r28 = REGS->r28; \
131 DEST.r29 = pt_psp(REGS); \
132 DEST.r30 = REGS->r30; \
133 DEST.r31 = REGS->r31; \
134 DEST.sa0 = REGS->sa0; \
135 DEST.lc0 = REGS->lc0; \
136 DEST.sa1 = REGS->sa1; \
137 DEST.lc1 = REGS->lc1; \
138 DEST.m0 = REGS->m0; \
139 DEST.m1 = REGS->m1; \
140 DEST.usr = REGS->usr; \
141 DEST.p3_0 = REGS->preds; \
142 DEST.gp = REGS->gp; \
143 DEST.ugp = REGS->ugp; \
144 CS_COPYREGS(DEST,REGS); \
145 DEST.pc = pt_elr(REGS); \
146 DEST.cause = pt_cause(REGS); \
147 DEST.badva = pt_badva(REGS); \
148} while (0);
149
150/*
151 * This is used to ensure we don't load something for the wrong architecture.
152 * Checks the machine and ABI type.
153 */
154#define elf_check_arch(hdr) ((hdr)->e_machine == EM_HEXAGON)
155
156/*
157 * These are used to set parameters in the core dumps.
158 */
159#define ELF_CLASS ELFCLASS32
160#define ELF_DATA ELFDATA2LSB
161#define ELF_ARCH EM_HEXAGON
162
163#if CONFIG_HEXAGON_ARCH_VERSION == 2
164#define ELF_CORE_EFLAGS 0x1
165#endif
166
167#if CONFIG_HEXAGON_ARCH_VERSION == 3
168#define ELF_CORE_EFLAGS 0x2
169#endif
170
171#if CONFIG_HEXAGON_ARCH_VERSION == 4
172#define ELF_CORE_EFLAGS 0x3
173#endif
174
175/*
176 * Some architectures have ld.so set up a pointer to a function
177 * to be registered using atexit, to facilitate cleanup. So that
178 * static executables will be well-behaved, we would null the register
179 * in question here, in the pt_regs structure passed. For now,
180 * leave it a null macro.
181 */
182#define ELF_PLAT_INIT(regs, load_addr) do { } while (0)
183
184#define CORE_DUMP_USE_REGSET
185
186/* Hrm is this going to cause problems for changing PAGE_SIZE? */
187#define ELF_EXEC_PAGESIZE PAGE_SIZE
188
189/*
190 * This is the location that an ET_DYN program is loaded if exec'ed. Typical
191 * use of this is to invoke "./ld.so someprog" to test out a new version of
192 * the loader. We need to make sure that it is out of the way of the program
193 * that it will "exec", and that there is sufficient room for the brk.
194 */
195#define ELF_ET_DYN_BASE 0x08000000UL
196
197/*
198 * This yields a mask that user programs can use to figure out what
199 * instruction set this cpu supports.
200 */
201#define ELF_HWCAP (0)
202
203/*
204 * This yields a string that ld.so will use to load implementation
205 * specific libraries for optimization. This is more specific in
206 * intent than poking at uname or /proc/cpuinfo.
207 */
208#define ELF_PLATFORM (NULL)
209
210#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
211struct linux_binprm;
212extern int arch_setup_additional_pages(struct linux_binprm *bprm,
213 int uses_interp);
214
215
216#endif
1/*
2 * ELF definitions for the Hexagon architecture
3 *
4 * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 and
8 * only version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
18 * 02110-1301, USA.
19 */
20
21#ifndef __ASM_ELF_H
22#define __ASM_ELF_H
23
24#include <asm/ptrace.h>
25#include <asm/user.h>
26
27/*
28 * This should really be in linux/elf-em.h.
29 */
30#define EM_HEXAGON 164 /* QUALCOMM Hexagon */
31
32struct elf32_hdr;
33
34/*
35 * ELF header e_flags defines.
36 */
37
38/* should have stuff like "CPU type" and maybe "ABI version", etc */
39
40/* Hexagon relocations */
41 /* V2 */
42#define R_HEXAGON_NONE 0
43#define R_HEXAGON_B22_PCREL 1
44#define R_HEXAGON_B15_PCREL 2
45#define R_HEXAGON_B7_PCREL 3
46#define R_HEXAGON_LO16 4
47#define R_HEXAGON_HI16 5
48#define R_HEXAGON_32 6
49#define R_HEXAGON_16 7
50#define R_HEXAGON_8 8
51#define R_HEXAGON_GPREL16_0 9
52#define R_HEXAGON_GPREL16_1 10
53#define R_HEXAGON_GPREL16_2 11
54#define R_HEXAGON_GPREL16_3 12
55#define R_HEXAGON_HL16 13
56 /* V3 */
57#define R_HEXAGON_B13_PCREL 14
58 /* V4 */
59#define R_HEXAGON_B9_PCREL 15
60 /* V4 (extenders) */
61#define R_HEXAGON_B32_PCREL_X 16
62#define R_HEXAGON_32_6_X 17
63 /* V4 (extended) */
64#define R_HEXAGON_B22_PCREL_X 18
65#define R_HEXAGON_B15_PCREL_X 19
66#define R_HEXAGON_B13_PCREL_X 20
67#define R_HEXAGON_B9_PCREL_X 21
68#define R_HEXAGON_B7_PCREL_X 22
69#define R_HEXAGON_16_X 23
70#define R_HEXAGON_12_X 24
71#define R_HEXAGON_11_X 25
72#define R_HEXAGON_10_X 26
73#define R_HEXAGON_9_X 27
74#define R_HEXAGON_8_X 28
75#define R_HEXAGON_7_X 29
76#define R_HEXAGON_6_X 30
77 /* V2 PIC */
78#define R_HEXAGON_32_PCREL 31
79#define R_HEXAGON_COPY 32
80#define R_HEXAGON_GLOB_DAT 33
81#define R_HEXAGON_JMP_SLOT 34
82#define R_HEXAGON_RELATIVE 35
83#define R_HEXAGON_PLT_B22_PCREL 36
84#define R_HEXAGON_GOTOFF_LO16 37
85#define R_HEXAGON_GOTOFF_HI16 38
86#define R_HEXAGON_GOTOFF_32 39
87#define R_HEXAGON_GOT_LO16 40
88#define R_HEXAGON_GOT_HI16 41
89#define R_HEXAGON_GOT_32 42
90#define R_HEXAGON_GOT_16 43
91
92/*
93 * ELF register definitions..
94 */
95typedef unsigned long elf_greg_t;
96
97typedef struct user_regs_struct elf_gregset_t;
98#define ELF_NGREG (sizeof(elf_gregset_t)/sizeof(unsigned long))
99
100/* Placeholder */
101typedef unsigned long elf_fpregset_t;
102
103/*
104 * Bypass the whole "regsets" thing for now and use the define.
105 */
106
107#if CONFIG_HEXAGON_ARCH_VERSION >= 4
108#define CS_COPYREGS(DEST,REGS) \
109do {\
110 DEST.cs0 = REGS->cs0;\
111 DEST.cs1 = REGS->cs1;\
112} while (0)
113#else
114#define CS_COPYREGS(DEST,REGS)
115#endif
116
117#define ELF_CORE_COPY_REGS(DEST, REGS) \
118do { \
119 DEST.r0 = REGS->r00; \
120 DEST.r1 = REGS->r01; \
121 DEST.r2 = REGS->r02; \
122 DEST.r3 = REGS->r03; \
123 DEST.r4 = REGS->r04; \
124 DEST.r5 = REGS->r05; \
125 DEST.r6 = REGS->r06; \
126 DEST.r7 = REGS->r07; \
127 DEST.r8 = REGS->r08; \
128 DEST.r9 = REGS->r09; \
129 DEST.r10 = REGS->r10; \
130 DEST.r11 = REGS->r11; \
131 DEST.r12 = REGS->r12; \
132 DEST.r13 = REGS->r13; \
133 DEST.r14 = REGS->r14; \
134 DEST.r15 = REGS->r15; \
135 DEST.r16 = REGS->r16; \
136 DEST.r17 = REGS->r17; \
137 DEST.r18 = REGS->r18; \
138 DEST.r19 = REGS->r19; \
139 DEST.r20 = REGS->r20; \
140 DEST.r21 = REGS->r21; \
141 DEST.r22 = REGS->r22; \
142 DEST.r23 = REGS->r23; \
143 DEST.r24 = REGS->r24; \
144 DEST.r25 = REGS->r25; \
145 DEST.r26 = REGS->r26; \
146 DEST.r27 = REGS->r27; \
147 DEST.r28 = REGS->r28; \
148 DEST.r29 = pt_psp(REGS); \
149 DEST.r30 = REGS->r30; \
150 DEST.r31 = REGS->r31; \
151 DEST.sa0 = REGS->sa0; \
152 DEST.lc0 = REGS->lc0; \
153 DEST.sa1 = REGS->sa1; \
154 DEST.lc1 = REGS->lc1; \
155 DEST.m0 = REGS->m0; \
156 DEST.m1 = REGS->m1; \
157 DEST.usr = REGS->usr; \
158 DEST.p3_0 = REGS->preds; \
159 DEST.gp = REGS->gp; \
160 DEST.ugp = REGS->ugp; \
161 CS_COPYREGS(DEST,REGS); \
162 DEST.pc = pt_elr(REGS); \
163 DEST.cause = pt_cause(REGS); \
164 DEST.badva = pt_badva(REGS); \
165} while (0);
166
167/*
168 * This is used to ensure we don't load something for the wrong architecture.
169 * Checks the machine and ABI type.
170 */
171#define elf_check_arch(hdr) ((hdr)->e_machine == EM_HEXAGON)
172
173/*
174 * These are used to set parameters in the core dumps.
175 */
176#define ELF_CLASS ELFCLASS32
177#define ELF_DATA ELFDATA2LSB
178#define ELF_ARCH EM_HEXAGON
179
180#if CONFIG_HEXAGON_ARCH_VERSION == 2
181#define ELF_CORE_EFLAGS 0x1
182#endif
183
184#if CONFIG_HEXAGON_ARCH_VERSION == 3
185#define ELF_CORE_EFLAGS 0x2
186#endif
187
188#if CONFIG_HEXAGON_ARCH_VERSION == 4
189#define ELF_CORE_EFLAGS 0x3
190#endif
191
192/*
193 * Some architectures have ld.so set up a pointer to a function
194 * to be registered using atexit, to facilitate cleanup. So that
195 * static executables will be well-behaved, we would null the register
196 * in question here, in the pt_regs structure passed. For now,
197 * leave it a null macro.
198 */
199#define ELF_PLAT_INIT(regs, load_addr) do { } while (0)
200
201#define USE_ELF_CORE_DUMP
202#define CORE_DUMP_USE_REGSET
203
204/* Hrm is this going to cause problems for changing PAGE_SIZE? */
205#define ELF_EXEC_PAGESIZE PAGE_SIZE
206
207/*
208 * This is the location that an ET_DYN program is loaded if exec'ed. Typical
209 * use of this is to invoke "./ld.so someprog" to test out a new version of
210 * the loader. We need to make sure that it is out of the way of the program
211 * that it will "exec", and that there is sufficient room for the brk.
212 */
213#define ELF_ET_DYN_BASE 0x08000000UL
214
215/*
216 * This yields a mask that user programs can use to figure out what
217 * instruction set this cpu supports.
218 */
219#define ELF_HWCAP (0)
220
221/*
222 * This yields a string that ld.so will use to load implementation
223 * specific libraries for optimization. This is more specific in
224 * intent than poking at uname or /proc/cpuinfo.
225 */
226#define ELF_PLATFORM (NULL)
227
228#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
229struct linux_binprm;
230extern int arch_setup_additional_pages(struct linux_binprm *bprm,
231 int uses_interp);
232
233
234#endif