1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASMPARISC_ELF_H
3 #define __ASMPARISC_ELF_H
4
5 /*
6 * ELF register definitions..
7 */
8
9 #include <linux/types.h>
10
11 #define EM_PARISC 15
12
13 /* HPPA specific definitions. */
14
15 /* Legal values for e_flags field of Elf32_Ehdr. */
16
17 #define EF_PARISC_TRAPNIL 0x00010000 /* Trap nil pointer dereference. */
18 #define EF_PARISC_EXT 0x00020000 /* Program uses arch. extensions. */
19 #define EF_PARISC_LSB 0x00040000 /* Program expects little endian. */
20 #define EF_PARISC_WIDE 0x00080000 /* Program expects wide mode. */
21 #define EF_PARISC_NO_KABP 0x00100000 /* No kernel assisted branch
22 prediction. */
23 #define EF_PARISC_LAZYSWAP 0x00400000 /* Allow lazy swapping. */
24 #define EF_PARISC_ARCH 0x0000ffff /* Architecture version. */
25
26 /* Defined values for `e_flags & EF_PARISC_ARCH' are: */
27
28 #define EFA_PARISC_1_0 0x020b /* PA-RISC 1.0 big-endian. */
29 #define EFA_PARISC_1_1 0x0210 /* PA-RISC 1.1 big-endian. */
30 #define EFA_PARISC_2_0 0x0214 /* PA-RISC 2.0 big-endian. */
31
32 /* Additional section indices. */
33
34 #define SHN_PARISC_ANSI_COMMON 0xff00 /* Section for tenatively declared
35 symbols in ANSI C. */
36 #define SHN_PARISC_HUGE_COMMON 0xff01 /* Common blocks in huge model. */
37
38 /* Legal values for sh_type field of Elf32_Shdr. */
39
40 #define SHT_PARISC_EXT 0x70000000 /* Contains product specific ext. */
41 #define SHT_PARISC_UNWIND 0x70000001 /* Unwind information. */
42 #define SHT_PARISC_DOC 0x70000002 /* Debug info for optimized code. */
43
44 /* Legal values for sh_flags field of Elf32_Shdr. */
45
46 #define SHF_PARISC_SHORT 0x20000000 /* Section with short addressing. */
47 #define SHF_PARISC_HUGE 0x40000000 /* Section far from gp. */
48 #define SHF_PARISC_SBP 0x80000000 /* Static branch prediction code. */
49
50 /* Legal values for ST_TYPE subfield of st_info (symbol type). */
51
52 #define STT_PARISC_MILLICODE 13 /* Millicode function entry point. */
53
54 #define STT_HP_OPAQUE (STT_LOOS + 0x1)
55 #define STT_HP_STUB (STT_LOOS + 0x2)
56
57 /* HPPA relocs. */
58
59 #define R_PARISC_NONE 0 /* No reloc. */
60 #define R_PARISC_DIR32 1 /* Direct 32-bit reference. */
61 #define R_PARISC_DIR21L 2 /* Left 21 bits of eff. address. */
62 #define R_PARISC_DIR17R 3 /* Right 17 bits of eff. address. */
63 #define R_PARISC_DIR17F 4 /* 17 bits of eff. address. */
64 #define R_PARISC_DIR14R 6 /* Right 14 bits of eff. address. */
65 #define R_PARISC_PCREL32 9 /* 32-bit rel. address. */
66 #define R_PARISC_PCREL21L 10 /* Left 21 bits of rel. address. */
67 #define R_PARISC_PCREL17R 11 /* Right 17 bits of rel. address. */
68 #define R_PARISC_PCREL17F 12 /* 17 bits of rel. address. */
69 #define R_PARISC_PCREL14R 14 /* Right 14 bits of rel. address. */
70 #define R_PARISC_DPREL21L 18 /* Left 21 bits of rel. address. */
71 #define R_PARISC_DPREL14R 22 /* Right 14 bits of rel. address. */
72 #define R_PARISC_GPREL21L 26 /* GP-relative, left 21 bits. */
73 #define R_PARISC_GPREL14R 30 /* GP-relative, right 14 bits. */
74 #define R_PARISC_LTOFF21L 34 /* LT-relative, left 21 bits. */
75 #define R_PARISC_LTOFF14R 38 /* LT-relative, right 14 bits. */
76 #define R_PARISC_SECREL32 41 /* 32 bits section rel. address. */
77 #define R_PARISC_SEGBASE 48 /* No relocation, set segment base. */
78 #define R_PARISC_SEGREL32 49 /* 32 bits segment rel. address. */
79 #define R_PARISC_PLTOFF21L 50 /* PLT rel. address, left 21 bits. */
80 #define R_PARISC_PLTOFF14R 54 /* PLT rel. address, right 14 bits. */
81 #define R_PARISC_LTOFF_FPTR32 57 /* 32 bits LT-rel. function pointer. */
82 #define R_PARISC_LTOFF_FPTR21L 58 /* LT-rel. fct ptr, left 21 bits. */
83 #define R_PARISC_LTOFF_FPTR14R 62 /* LT-rel. fct ptr, right 14 bits. */
84 #define R_PARISC_FPTR64 64 /* 64 bits function address. */
85 #define R_PARISC_PLABEL32 65 /* 32 bits function address. */
86 #define R_PARISC_PCREL64 72 /* 64 bits PC-rel. address. */
87 #define R_PARISC_PCREL22F 74 /* 22 bits PC-rel. address. */
88 #define R_PARISC_PCREL14WR 75 /* PC-rel. address, right 14 bits. */
89 #define R_PARISC_PCREL14DR 76 /* PC rel. address, right 14 bits. */
90 #define R_PARISC_PCREL16F 77 /* 16 bits PC-rel. address. */
91 #define R_PARISC_PCREL16WF 78 /* 16 bits PC-rel. address. */
92 #define R_PARISC_PCREL16DF 79 /* 16 bits PC-rel. address. */
93 #define R_PARISC_DIR64 80 /* 64 bits of eff. address. */
94 #define R_PARISC_DIR14WR 83 /* 14 bits of eff. address. */
95 #define R_PARISC_DIR14DR 84 /* 14 bits of eff. address. */
96 #define R_PARISC_DIR16F 85 /* 16 bits of eff. address. */
97 #define R_PARISC_DIR16WF 86 /* 16 bits of eff. address. */
98 #define R_PARISC_DIR16DF 87 /* 16 bits of eff. address. */
99 #define R_PARISC_GPREL64 88 /* 64 bits of GP-rel. address. */
100 #define R_PARISC_GPREL14WR 91 /* GP-rel. address, right 14 bits. */
101 #define R_PARISC_GPREL14DR 92 /* GP-rel. address, right 14 bits. */
102 #define R_PARISC_GPREL16F 93 /* 16 bits GP-rel. address. */
103 #define R_PARISC_GPREL16WF 94 /* 16 bits GP-rel. address. */
104 #define R_PARISC_GPREL16DF 95 /* 16 bits GP-rel. address. */
105 #define R_PARISC_LTOFF64 96 /* 64 bits LT-rel. address. */
106 #define R_PARISC_LTOFF14WR 99 /* LT-rel. address, right 14 bits. */
107 #define R_PARISC_LTOFF14DR 100 /* LT-rel. address, right 14 bits. */
108 #define R_PARISC_LTOFF16F 101 /* 16 bits LT-rel. address. */
109 #define R_PARISC_LTOFF16WF 102 /* 16 bits LT-rel. address. */
110 #define R_PARISC_LTOFF16DF 103 /* 16 bits LT-rel. address. */
111 #define R_PARISC_SECREL64 104 /* 64 bits section rel. address. */
112 #define R_PARISC_SEGREL64 112 /* 64 bits segment rel. address. */
113 #define R_PARISC_PLTOFF14WR 115 /* PLT-rel. address, right 14 bits. */
114 #define R_PARISC_PLTOFF14DR 116 /* PLT-rel. address, right 14 bits. */
115 #define R_PARISC_PLTOFF16F 117 /* 16 bits LT-rel. address. */
116 #define R_PARISC_PLTOFF16WF 118 /* 16 bits PLT-rel. address. */
117 #define R_PARISC_PLTOFF16DF 119 /* 16 bits PLT-rel. address. */
118 #define R_PARISC_LTOFF_FPTR64 120 /* 64 bits LT-rel. function ptr. */
119 #define R_PARISC_LTOFF_FPTR14WR 123 /* LT-rel. fct. ptr., right 14 bits. */
120 #define R_PARISC_LTOFF_FPTR14DR 124 /* LT-rel. fct. ptr., right 14 bits. */
121 #define R_PARISC_LTOFF_FPTR16F 125 /* 16 bits LT-rel. function ptr. */
122 #define R_PARISC_LTOFF_FPTR16WF 126 /* 16 bits LT-rel. function ptr. */
123 #define R_PARISC_LTOFF_FPTR16DF 127 /* 16 bits LT-rel. function ptr. */
124 #define R_PARISC_LORESERVE 128
125 #define R_PARISC_COPY 128 /* Copy relocation. */
126 #define R_PARISC_IPLT 129 /* Dynamic reloc, imported PLT */
127 #define R_PARISC_EPLT 130 /* Dynamic reloc, exported PLT */
128 #define R_PARISC_TPREL32 153 /* 32 bits TP-rel. address. */
129 #define R_PARISC_TPREL21L 154 /* TP-rel. address, left 21 bits. */
130 #define R_PARISC_TPREL14R 158 /* TP-rel. address, right 14 bits. */
131 #define R_PARISC_LTOFF_TP21L 162 /* LT-TP-rel. address, left 21 bits. */
132 #define R_PARISC_LTOFF_TP14R 166 /* LT-TP-rel. address, right 14 bits.*/
133 #define R_PARISC_LTOFF_TP14F 167 /* 14 bits LT-TP-rel. address. */
134 #define R_PARISC_TPREL64 216 /* 64 bits TP-rel. address. */
135 #define R_PARISC_TPREL14WR 219 /* TP-rel. address, right 14 bits. */
136 #define R_PARISC_TPREL14DR 220 /* TP-rel. address, right 14 bits. */
137 #define R_PARISC_TPREL16F 221 /* 16 bits TP-rel. address. */
138 #define R_PARISC_TPREL16WF 222 /* 16 bits TP-rel. address. */
139 #define R_PARISC_TPREL16DF 223 /* 16 bits TP-rel. address. */
140 #define R_PARISC_LTOFF_TP64 224 /* 64 bits LT-TP-rel. address. */
141 #define R_PARISC_LTOFF_TP14WR 227 /* LT-TP-rel. address, right 14 bits.*/
142 #define R_PARISC_LTOFF_TP14DR 228 /* LT-TP-rel. address, right 14 bits.*/
143 #define R_PARISC_LTOFF_TP16F 229 /* 16 bits LT-TP-rel. address. */
144 #define R_PARISC_LTOFF_TP16WF 230 /* 16 bits LT-TP-rel. address. */
145 #define R_PARISC_LTOFF_TP16DF 231 /* 16 bits LT-TP-rel. address. */
146 #define R_PARISC_HIRESERVE 255
147
148 #define PA_PLABEL_FDESC 0x02 /* bit set if PLABEL points to
149 * a function descriptor, not
150 * an address */
151
152 /* The following are PA function descriptors
153 *
154 * addr: the absolute address of the function
155 * gp: either the data pointer (r27) for non-PIC code or the
156 * the PLT pointer (r19) for PIC code */
157
158 /* Format for the Elf32 Function descriptor */
159 typedef struct elf32_fdesc {
160 __u32 addr;
161 __u32 gp;
162 } Elf32_Fdesc;
163
164 /* Format for the Elf64 Function descriptor */
165 typedef struct elf64_fdesc {
166 __u64 dummy[2]; /* FIXME: nothing uses these, why waste
167 * the space */
168 __u64 addr;
169 __u64 gp;
170 } Elf64_Fdesc;
171
172 #ifdef CONFIG_64BIT
173 #define Elf_Fdesc Elf64_Fdesc
174 #else
175 #define Elf_Fdesc Elf32_Fdesc
176 #endif /*CONFIG_64BIT*/
177
178 /* Legal values for p_type field of Elf32_Phdr/Elf64_Phdr. */
179
180 #define PT_HP_TLS (PT_LOOS + 0x0)
181 #define PT_HP_CORE_NONE (PT_LOOS + 0x1)
182 #define PT_HP_CORE_VERSION (PT_LOOS + 0x2)
183 #define PT_HP_CORE_KERNEL (PT_LOOS + 0x3)
184 #define PT_HP_CORE_COMM (PT_LOOS + 0x4)
185 #define PT_HP_CORE_PROC (PT_LOOS + 0x5)
186 #define PT_HP_CORE_LOADABLE (PT_LOOS + 0x6)
187 #define PT_HP_CORE_STACK (PT_LOOS + 0x7)
188 #define PT_HP_CORE_SHM (PT_LOOS + 0x8)
189 #define PT_HP_CORE_MMF (PT_LOOS + 0x9)
190 #define PT_HP_PARALLEL (PT_LOOS + 0x10)
191 #define PT_HP_FASTBIND (PT_LOOS + 0x11)
192 #define PT_HP_OPT_ANNOT (PT_LOOS + 0x12)
193 #define PT_HP_HSL_ANNOT (PT_LOOS + 0x13)
194 #define PT_HP_STACK (PT_LOOS + 0x14)
195
196 #define PT_PARISC_ARCHEXT 0x70000000
197 #define PT_PARISC_UNWIND 0x70000001
198
199 /* Legal values for p_flags field of Elf32_Phdr/Elf64_Phdr. */
200
201 #define PF_PARISC_SBP 0x08000000
202
203 #define PF_HP_PAGE_SIZE 0x00100000
204 #define PF_HP_FAR_SHARED 0x00200000
205 #define PF_HP_NEAR_SHARED 0x00400000
206 #define PF_HP_CODE 0x01000000
207 #define PF_HP_MODIFY 0x02000000
208 #define PF_HP_LAZYSWAP 0x04000000
209 #define PF_HP_SBP 0x08000000
210
211 /*
212 * This yields a string that ld.so will use to load implementation
213 * specific libraries for optimization. This is more specific in
214 * intent than poking at uname or /proc/cpuinfo.
215 */
216
217 #define ELF_PLATFORM ("PARISC")
218
219 /*
220 * The following definitions are those for 32-bit ELF binaries on a 32-bit
221 * kernel and for 64-bit binaries on a 64-bit kernel. To run 32-bit binaries
222 * on a 64-bit kernel, fs/compat_binfmt_elf.c defines ELF_CLASS and then
223 * #includes binfmt_elf.c, which then includes this file.
224 */
225 #ifndef ELF_CLASS
226
227 #ifdef CONFIG_64BIT
228 #define ELF_CLASS ELFCLASS64
229 #else
230 #define ELF_CLASS ELFCLASS32
231 #endif
232
233 typedef unsigned long elf_greg_t;
234
235 #define SET_PERSONALITY(ex) \
236 ({ \
237 set_personality((current->personality & ~PER_MASK) | PER_LINUX); \
238 clear_thread_flag(TIF_32BIT); \
239 current->thread.map_base = DEFAULT_MAP_BASE; \
240 current->thread.task_size = DEFAULT_TASK_SIZE; \
241 })
242
243 #endif /* ! ELF_CLASS */
244
245 #define COMPAT_SET_PERSONALITY(ex) \
246 ({ \
247 if ((ex).e_ident[EI_CLASS] == ELFCLASS32) { \
248 set_thread_flag(TIF_32BIT); \
249 current->thread.map_base = DEFAULT_MAP_BASE32; \
250 current->thread.task_size = DEFAULT_TASK_SIZE32; \
251 } else clear_thread_flag(TIF_32BIT); \
252 })
253
254 /*
255 * Fill in general registers in a core dump. This saves pretty
256 * much the same registers as hp-ux, although in a different order.
257 * Registers marked # below are not currently saved in pt_regs, so
258 * we use their current values here.
259 *
260 * gr0..gr31
261 * sr0..sr7
262 * iaoq0..iaoq1
263 * iasq0..iasq1
264 * cr11 (sar)
265 * cr19 (iir)
266 * cr20 (isr)
267 * cr21 (ior)
268 * # cr22 (ipsw)
269 * # cr0 (recovery counter)
270 * # cr24..cr31 (temporary registers)
271 * # cr8,9,12,13 (protection IDs)
272 * # cr10 (scr/ccr)
273 * # cr15 (ext int enable mask)
274 *
275 */
276
277 #define ELF_CORE_COPY_REGS(dst, pt) \
278 memset(dst, 0, sizeof(dst)); /* don't leak any "random" bits */ \
279 { int i; \
280 for (i = 0; i < 32; i++) dst[i] = pt->gr[i]; \
281 for (i = 0; i < 8; i++) dst[32 + i] = pt->sr[i]; \
282 } \
283 dst[40] = pt->iaoq[0]; dst[41] = pt->iaoq[1]; \
284 dst[42] = pt->iasq[0]; dst[43] = pt->iasq[1]; \
285 dst[44] = pt->sar; dst[45] = pt->iir; \
286 dst[46] = pt->isr; dst[47] = pt->ior; \
287 dst[48] = mfctl(22); dst[49] = mfctl(0); \
288 dst[50] = mfctl(24); dst[51] = mfctl(25); \
289 dst[52] = mfctl(26); dst[53] = mfctl(27); \
290 dst[54] = mfctl(28); dst[55] = mfctl(29); \
291 dst[56] = mfctl(30); dst[57] = mfctl(31); \
292 dst[58] = mfctl( 8); dst[59] = mfctl( 9); \
293 dst[60] = mfctl(12); dst[61] = mfctl(13); \
294 dst[62] = mfctl(10); dst[63] = mfctl(15);
295
296 #define CORE_DUMP_USE_REGSET
297
298 #define ELF_NGREG 80 /* We only need 64 at present, but leave space
299 for expansion. */
300 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
301
302 #define ELF_NFPREG 32
303 typedef double elf_fpreg_t;
304 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
305
306 struct task_struct;
307
308 extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
309 #define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
310
311 struct pt_regs; /* forward declaration... */
312
313
314 #define elf_check_arch(x) \
315 ((x)->e_machine == EM_PARISC && (x)->e_ident[EI_CLASS] == ELF_CLASS)
316 #define compat_elf_check_arch(x) \
317 ((x)->e_machine == EM_PARISC && (x)->e_ident[EI_CLASS] == ELFCLASS32)
318
319 /*
320 * These are used to set parameters in the core dumps.
321 */
322 #define ELF_DATA ELFDATA2MSB
323 #define ELF_ARCH EM_PARISC
324 #define ELF_OSABI ELFOSABI_LINUX
325
326 /* %r23 is set by ld.so to a pointer to a function which might be
327 registered using atexit. This provides a means for the dynamic
328 linker to call DT_FINI functions for shared libraries that have
329 been loaded before the code runs.
330
331 So that we can use the same startup file with static executables,
332 we start programs with a value of 0 to indicate that there is no
333 such function. */
334 #define ELF_PLAT_INIT(_r, load_addr) _r->gr[23] = 0
335
336 #define ELF_EXEC_PAGESIZE 4096
337
338 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical
339 use of this is to invoke "./ld.so someprog" to test out a new version of
340 the loader. We need to make sure that it is out of the way of the program
341 that it will "exec", and that there is sufficient room for the brk.
342
343 (2 * TASK_SIZE / 3) turns into something undefined when run through a
344 32 bit preprocessor and in some cases results in the kernel trying to map
345 ld.so to the kernel virtual base. Use a sane value instead. /Jes
346 */
347
348 #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x01000000)
349
350 /* This yields a mask that user programs can use to figure out what
351 instruction set this CPU supports. This could be done in user space,
352 but it's not easy, and we've already done it here. */
353
354 #define ELF_HWCAP 0
355
356 /* Masks for stack and mmap randomization */
357 #define BRK_RND_MASK (is_32bit_task() ? 0x07ffUL : 0x3ffffUL)
358 #define MMAP_RND_MASK (is_32bit_task() ? 0x1fffUL : 0x3ffffUL)
359 #define STACK_RND_MASK MMAP_RND_MASK
360
361 struct mm_struct;
362 extern unsigned long arch_randomize_brk(struct mm_struct *);
363 #define arch_randomize_brk arch_randomize_brk
364
365 #endif