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8feca0e1 RK |
1 | /* |
2 | * ELF definitions for the Hexagon architecture | |
3 | * | |
4 | * Copyright (c) 2010-2011, Code Aurora Forum. 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 | ||
32 | struct 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 | */ | |
95 | typedef unsigned long elf_greg_t; | |
96 | ||
97 | typedef struct user_regs_struct elf_gregset_t; | |
98 | #define ELF_NGREG (sizeof(elf_gregset_t)/sizeof(unsigned long)) | |
99 | ||
100 | /* Placeholder */ | |
101 | typedef unsigned long elf_fpregset_t; | |
102 | ||
103 | /* | |
104 | * Bypass the whole "regsets" thing for now and use the define. | |
105 | */ | |
106 | ||
107 | #define ELF_CORE_COPY_REGS(DEST, REGS) \ | |
108 | do { \ | |
109 | DEST.r0 = REGS->r00; \ | |
110 | DEST.r1 = REGS->r01; \ | |
111 | DEST.r2 = REGS->r02; \ | |
112 | DEST.r3 = REGS->r03; \ | |
113 | DEST.r4 = REGS->r04; \ | |
114 | DEST.r5 = REGS->r05; \ | |
115 | DEST.r6 = REGS->r06; \ | |
116 | DEST.r7 = REGS->r07; \ | |
117 | DEST.r8 = REGS->r08; \ | |
118 | DEST.r9 = REGS->r09; \ | |
119 | DEST.r10 = REGS->r10; \ | |
120 | DEST.r11 = REGS->r11; \ | |
121 | DEST.r12 = REGS->r12; \ | |
122 | DEST.r13 = REGS->r13; \ | |
123 | DEST.r14 = REGS->r14; \ | |
124 | DEST.r15 = REGS->r15; \ | |
125 | DEST.r16 = REGS->r16; \ | |
126 | DEST.r17 = REGS->r17; \ | |
127 | DEST.r18 = REGS->r18; \ | |
128 | DEST.r19 = REGS->r19; \ | |
129 | DEST.r20 = REGS->r20; \ | |
130 | DEST.r21 = REGS->r21; \ | |
131 | DEST.r22 = REGS->r22; \ | |
132 | DEST.r23 = REGS->r23; \ | |
133 | DEST.r24 = REGS->r24; \ | |
134 | DEST.r25 = REGS->r25; \ | |
135 | DEST.r26 = REGS->r26; \ | |
136 | DEST.r27 = REGS->r27; \ | |
137 | DEST.r28 = REGS->r28; \ | |
138 | DEST.r29 = pt_psp(REGS); \ | |
139 | DEST.r30 = REGS->r30; \ | |
140 | DEST.r31 = REGS->r31; \ | |
141 | DEST.sa0 = REGS->sa0; \ | |
142 | DEST.lc0 = REGS->lc0; \ | |
143 | DEST.sa1 = REGS->sa1; \ | |
144 | DEST.lc1 = REGS->lc1; \ | |
145 | DEST.m0 = REGS->m0; \ | |
146 | DEST.m1 = REGS->m1; \ | |
147 | DEST.usr = REGS->usr; \ | |
148 | DEST.p3_0 = REGS->preds; \ | |
149 | DEST.gp = REGS->gp; \ | |
150 | DEST.ugp = REGS->ugp; \ | |
151 | DEST.pc = pt_elr(REGS); \ | |
152 | DEST.cause = pt_cause(REGS); \ | |
153 | DEST.badva = pt_badva(REGS); \ | |
154 | } while (0); | |
155 | ||
156 | ||
157 | ||
158 | /* | |
159 | * This is used to ensure we don't load something for the wrong architecture. | |
160 | * Checks the machine and ABI type. | |
161 | */ | |
162 | #define elf_check_arch(hdr) ((hdr)->e_machine == EM_HEXAGON) | |
163 | ||
164 | /* | |
165 | * These are used to set parameters in the core dumps. | |
166 | */ | |
167 | #define ELF_CLASS ELFCLASS32 | |
168 | #define ELF_DATA ELFDATA2LSB | |
169 | #define ELF_ARCH EM_HEXAGON | |
170 | ||
171 | #ifdef CONFIG_HEXAGON_ARCH_V2 | |
172 | #define ELF_CORE_EFLAGS 0x1 | |
173 | #endif | |
174 | ||
175 | #ifdef CONFIG_HEXAGON_ARCH_V3 | |
176 | #define ELF_CORE_EFLAGS 0x2 | |
177 | #endif | |
178 | ||
179 | #ifdef CONFIG_HEXAGON_ARCH_V4 | |
180 | #define ELF_CORE_EFLAGS 0x3 | |
181 | #endif | |
182 | ||
183 | /* | |
184 | * Some architectures have ld.so set up a pointer to a function | |
185 | * to be registered using atexit, to facilitate cleanup. So that | |
186 | * static executables will be well-behaved, we would null the register | |
187 | * in question here, in the pt_regs structure passed. For now, | |
188 | * leave it a null macro. | |
189 | */ | |
190 | #define ELF_PLAT_INIT(regs, load_addr) do { } while (0) | |
191 | ||
192 | #define USE_ELF_CORE_DUMP | |
193 | #define CORE_DUMP_USE_REGSET | |
194 | ||
195 | /* Hrm is this going to cause problems for changing PAGE_SIZE? */ | |
196 | #define ELF_EXEC_PAGESIZE 4096 | |
197 | ||
198 | /* | |
199 | * This is the location that an ET_DYN program is loaded if exec'ed. Typical | |
200 | * use of this is to invoke "./ld.so someprog" to test out a new version of | |
201 | * the loader. We need to make sure that it is out of the way of the program | |
202 | * that it will "exec", and that there is sufficient room for the brk. | |
203 | */ | |
204 | #define ELF_ET_DYN_BASE 0x08000000UL | |
205 | ||
206 | /* | |
207 | * This yields a mask that user programs can use to figure out what | |
208 | * instruction set this cpu supports. | |
209 | */ | |
210 | #define ELF_HWCAP (0) | |
211 | ||
212 | /* | |
213 | * This yields a string that ld.so will use to load implementation | |
214 | * specific libraries for optimization. This is more specific in | |
215 | * intent than poking at uname or /proc/cpuinfo. | |
216 | */ | |
217 | #define ELF_PLATFORM (NULL) | |
218 | ||
219 | #ifdef __KERNEL__ | |
220 | #define SET_PERSONALITY(ex) set_personality(PER_LINUX) | |
221 | #endif | |
222 | ||
223 | #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 | |
224 | struct linux_binprm; | |
225 | extern int arch_setup_additional_pages(struct linux_binprm *bprm, | |
226 | int uses_interp); | |
227 | ||
228 | ||
229 | #endif |