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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __PPC64_ELF_H
2#define __PPC64_ELF_H
3
4#include <asm/types.h>
5#include <asm/ptrace.h>
6#include <asm/cputable.h>
7
8/* PowerPC relocations defined by the ABIs */
9#define R_PPC_NONE 0
10#define R_PPC_ADDR32 1 /* 32bit absolute address */
11#define R_PPC_ADDR24 2 /* 26bit address, 2 bits ignored. */
12#define R_PPC_ADDR16 3 /* 16bit absolute address */
13#define R_PPC_ADDR16_LO 4 /* lower 16bit of absolute address */
14#define R_PPC_ADDR16_HI 5 /* high 16bit of absolute address */
15#define R_PPC_ADDR16_HA 6 /* adjusted high 16bit */
16#define R_PPC_ADDR14 7 /* 16bit address, 2 bits ignored */
17#define R_PPC_ADDR14_BRTAKEN 8
18#define R_PPC_ADDR14_BRNTAKEN 9
19#define R_PPC_REL24 10 /* PC relative 26 bit */
20#define R_PPC_REL14 11 /* PC relative 16 bit */
21#define R_PPC_REL14_BRTAKEN 12
22#define R_PPC_REL14_BRNTAKEN 13
23#define R_PPC_GOT16 14
24#define R_PPC_GOT16_LO 15
25#define R_PPC_GOT16_HI 16
26#define R_PPC_GOT16_HA 17
27#define R_PPC_PLTREL24 18
28#define R_PPC_COPY 19
29#define R_PPC_GLOB_DAT 20
30#define R_PPC_JMP_SLOT 21
31#define R_PPC_RELATIVE 22
32#define R_PPC_LOCAL24PC 23
33#define R_PPC_UADDR32 24
34#define R_PPC_UADDR16 25
35#define R_PPC_REL32 26
36#define R_PPC_PLT32 27
37#define R_PPC_PLTREL32 28
38#define R_PPC_PLT16_LO 29
39#define R_PPC_PLT16_HI 30
40#define R_PPC_PLT16_HA 31
41#define R_PPC_SDAREL16 32
42#define R_PPC_SECTOFF 33
43#define R_PPC_SECTOFF_LO 34
44#define R_PPC_SECTOFF_HI 35
45#define R_PPC_SECTOFF_HA 36
46
47/* PowerPC relocations defined for the TLS access ABI. */
48#define R_PPC_TLS 67 /* none (sym+add)@tls */
49#define R_PPC_DTPMOD32 68 /* word32 (sym+add)@dtpmod */
50#define R_PPC_TPREL16 69 /* half16* (sym+add)@tprel */
51#define R_PPC_TPREL16_LO 70 /* half16 (sym+add)@tprel@l */
52#define R_PPC_TPREL16_HI 71 /* half16 (sym+add)@tprel@h */
53#define R_PPC_TPREL16_HA 72 /* half16 (sym+add)@tprel@ha */
54#define R_PPC_TPREL32 73 /* word32 (sym+add)@tprel */
55#define R_PPC_DTPREL16 74 /* half16* (sym+add)@dtprel */
56#define R_PPC_DTPREL16_LO 75 /* half16 (sym+add)@dtprel@l */
57#define R_PPC_DTPREL16_HI 76 /* half16 (sym+add)@dtprel@h */
58#define R_PPC_DTPREL16_HA 77 /* half16 (sym+add)@dtprel@ha */
59#define R_PPC_DTPREL32 78 /* word32 (sym+add)@dtprel */
60#define R_PPC_GOT_TLSGD16 79 /* half16* (sym+add)@got@tlsgd */
61#define R_PPC_GOT_TLSGD16_LO 80 /* half16 (sym+add)@got@tlsgd@l */
62#define R_PPC_GOT_TLSGD16_HI 81 /* half16 (sym+add)@got@tlsgd@h */
63#define R_PPC_GOT_TLSGD16_HA 82 /* half16 (sym+add)@got@tlsgd@ha */
64#define R_PPC_GOT_TLSLD16 83 /* half16* (sym+add)@got@tlsld */
65#define R_PPC_GOT_TLSLD16_LO 84 /* half16 (sym+add)@got@tlsld@l */
66#define R_PPC_GOT_TLSLD16_HI 85 /* half16 (sym+add)@got@tlsld@h */
67#define R_PPC_GOT_TLSLD16_HA 86 /* half16 (sym+add)@got@tlsld@ha */
68#define R_PPC_GOT_TPREL16 87 /* half16* (sym+add)@got@tprel */
69#define R_PPC_GOT_TPREL16_LO 88 /* half16 (sym+add)@got@tprel@l */
70#define R_PPC_GOT_TPREL16_HI 89 /* half16 (sym+add)@got@tprel@h */
71#define R_PPC_GOT_TPREL16_HA 90 /* half16 (sym+add)@got@tprel@ha */
72#define R_PPC_GOT_DTPREL16 91 /* half16* (sym+add)@got@dtprel */
73#define R_PPC_GOT_DTPREL16_LO 92 /* half16* (sym+add)@got@dtprel@l */
74#define R_PPC_GOT_DTPREL16_HI 93 /* half16* (sym+add)@got@dtprel@h */
75#define R_PPC_GOT_DTPREL16_HA 94 /* half16* (sym+add)@got@dtprel@ha */
76
77/* Keep this the last entry. */
78#define R_PPC_NUM 95
79
80/*
81 * ELF register definitions..
82 *
83 * This program is free software; you can redistribute it and/or
84 * modify it under the terms of the GNU General Public License
85 * as published by the Free Software Foundation; either version
86 * 2 of the License, or (at your option) any later version.
87 */
88#include <asm/ptrace.h>
89
90#define ELF_NGREG 48 /* includes nip, msr, lr, etc. */
91#define ELF_NFPREG 33 /* includes fpscr */
92#define ELF_NVRREG32 33 /* includes vscr & vrsave stuffed together */
93#define ELF_NVRREG 34 /* includes vscr & vrsave in split vectors */
94
95typedef unsigned long elf_greg_t64;
96typedef elf_greg_t64 elf_gregset_t64[ELF_NGREG];
97
98typedef unsigned int elf_greg_t32;
99typedef elf_greg_t32 elf_gregset_t32[ELF_NGREG];
100
101/*
102 * These are used to set parameters in the core dumps.
103 */
104#ifndef ELF_ARCH
105# define ELF_ARCH EM_PPC64
106# define ELF_CLASS ELFCLASS64
107# define ELF_DATA ELFDATA2MSB
108 typedef elf_greg_t64 elf_greg_t;
109 typedef elf_gregset_t64 elf_gregset_t;
110# define elf_addr_t unsigned long
111#else
112 /* Assumption: ELF_ARCH == EM_PPC and ELF_CLASS == ELFCLASS32 */
113 typedef elf_greg_t32 elf_greg_t;
114 typedef elf_gregset_t32 elf_gregset_t;
115# define elf_addr_t u32
116#endif
117
118typedef double elf_fpreg_t;
119typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
120
121/* Altivec registers */
122/*
123 * The entries with indexes 0-31 contain the corresponding vector registers.
124 * The entry with index 32 contains the vscr as the last word (offset 12)
125 * within the quadword. This allows the vscr to be stored as either a
126 * quadword (since it must be copied via a vector register to/from storage)
127 * or as a word. The entry with index 33 contains the vrsave as the first
128 * word (offset 0) within the quadword.
129 *
130 * This definition of the VMX state is compatible with the current PPC32
131 * ptrace interface. This allows signal handling and ptrace to use the same
132 * structures. This also simplifies the implementation of a bi-arch
133 * (combined (32- and 64-bit) gdb.
134 *
135 * Note that it's _not_ compatible with 32 bits ucontext which stuffs the
136 * vrsave along with vscr and so only uses 33 vectors for the register set
137 */
138typedef __vector128 elf_vrreg_t;
139typedef elf_vrreg_t elf_vrregset_t[ELF_NVRREG];
140typedef elf_vrreg_t elf_vrregset_t32[ELF_NVRREG32];
141
142/*
143 * This is used to ensure we don't load something for the wrong architecture.
144 */
145#define elf_check_arch(x) ((x)->e_machine == ELF_ARCH)
146
147#define USE_ELF_CORE_DUMP
148#define ELF_EXEC_PAGESIZE 4096
149
150/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
151 use of this is to invoke "./ld.so someprog" to test out a new version of
152 the loader. We need to make sure that it is out of the way of the program
153 that it will "exec", and that there is sufficient room for the brk. */
154
155#define ELF_ET_DYN_BASE (0x08000000)
156
157#ifdef __KERNEL__
158
159/* Common routine for both 32-bit and 64-bit processes */
160static inline void ppc64_elf_core_copy_regs(elf_gregset_t elf_regs,
161 struct pt_regs *regs)
162{
163 int i;
164 int gprs = sizeof(struct pt_regs)/sizeof(elf_greg_t64);
165
166 if (gprs > ELF_NGREG)
167 gprs = ELF_NGREG;
168
169 for (i=0; i < gprs; i++)
170 elf_regs[i] = (elf_greg_t)((elf_greg_t64 *)regs)[i];
171}
172#define ELF_CORE_COPY_REGS(gregs, regs) ppc64_elf_core_copy_regs(gregs, regs);
173
174static inline int dump_task_regs(struct task_struct *tsk,
175 elf_gregset_t *elf_regs)
176{
177 struct pt_regs *regs = tsk->thread.regs;
178 if (regs)
179 ppc64_elf_core_copy_regs(*elf_regs, regs);
180
181 return 1;
182}
183#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
184
185extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *);
186#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
187
188/* XXX Should we define the XFPREGS using altivec ??? */
189
190#endif
191
192/* This yields a mask that user programs can use to figure out what
193 instruction set this cpu supports. This could be done in userspace,
194 but it's not easy, and we've already done it here. */
195
196#define ELF_HWCAP (cur_cpu_spec->cpu_user_features)
197
198/* This yields a string that ld.so will use to load implementation
199 specific libraries for optimization. This is more specific in
200 intent than poking at uname or /proc/cpuinfo.
201
202 For the moment, we have only optimizations for the Intel generations,
203 but that could change... */
204
205#define ELF_PLATFORM (NULL)
206
207#define ELF_PLAT_INIT(_r, load_addr) do { \
208 memset(_r->gpr, 0, sizeof(_r->gpr)); \
209 _r->ctr = _r->link = _r->xer = _r->ccr = 0; \
210 _r->gpr[2] = load_addr; \
211} while (0)
212
213#ifdef __KERNEL__
214#define SET_PERSONALITY(ex, ibcs2) \
215do { \
216 unsigned long new_flags = 0; \
217 if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
218 new_flags = _TIF_32BIT; \
219 if ((current_thread_info()->flags & _TIF_32BIT) \
220 != new_flags) \
221 set_thread_flag(TIF_ABI_PENDING); \
222 else \
223 clear_thread_flag(TIF_ABI_PENDING); \
Paul Mackerrasce10d972005-06-08 21:59:15 +1000224 if (personality(current->personality) != PER_LINUX32) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 set_personality(PER_LINUX); \
226} while (0)
227
228/*
229 * An executable for which elf_read_implies_exec() returns TRUE will
Anton Blancharda2f95a52005-05-01 08:58:45 -0700230 * have the READ_IMPLIES_EXEC personality flag set automatically. This
231 * is only required to work around bugs in old 32bit toolchains. Since
232 * the 64bit ABI has never had these issues dont enable the workaround
233 * even if we have an executable stack.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 */
Anton Blancharda2f95a52005-05-01 08:58:45 -0700235#define elf_read_implies_exec(ex, exec_stk) (test_thread_flag(TIF_32BIT) ? \
236 (exec_stk != EXSTACK_DISABLE_X) : 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237
238#endif
239
240/*
241 * We need to put in some extra aux table entries to tell glibc what
242 * the cache block size is, so it can use the dcbz instruction safely.
243 */
244#define AT_DCACHEBSIZE 19
245#define AT_ICACHEBSIZE 20
246#define AT_UCACHEBSIZE 21
247/* A special ignored type value for PPC, for glibc compatibility. */
248#define AT_IGNOREPPC 22
249
250/* The vDSO location. We have to use the same value as x86 for glibc's
251 * sake :-)
252 */
253#define AT_SYSINFO_EHDR 33
254
255extern int dcache_bsize;
256extern int icache_bsize;
257extern int ucache_bsize;
258
259/* We do have an arch_setup_additional_pages for vDSO matters */
260#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
261struct linux_binprm;
262extern int arch_setup_additional_pages(struct linux_binprm *bprm, int executable_stack);
263
264/*
265 * The requirements here are:
266 * - keep the final alignment of sp (sp & 0xf)
267 * - make sure the 32-bit value at the first 16 byte aligned position of
268 * AUXV is greater than 16 for glibc compatibility.
269 * AT_IGNOREPPC is used for that.
270 * - for compatibility with glibc ARCH_DLINFO must always be defined on PPC,
271 * even if DLINFO_ARCH_ITEMS goes to zero or is undefined.
272 */
273#define ARCH_DLINFO \
274do { \
275 /* Handle glibc compatibility. */ \
276 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
277 NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
278 /* Cache size items */ \
279 NEW_AUX_ENT(AT_DCACHEBSIZE, dcache_bsize); \
280 NEW_AUX_ENT(AT_ICACHEBSIZE, icache_bsize); \
281 NEW_AUX_ENT(AT_UCACHEBSIZE, ucache_bsize); \
282 /* vDSO base */ \
283 NEW_AUX_ENT(AT_SYSINFO_EHDR, current->thread.vdso_base); \
284 } while (0)
285
286/* PowerPC64 relocations defined by the ABIs */
287#define R_PPC64_NONE R_PPC_NONE
288#define R_PPC64_ADDR32 R_PPC_ADDR32 /* 32bit absolute address. */
289#define R_PPC64_ADDR24 R_PPC_ADDR24 /* 26bit address, word aligned. */
290#define R_PPC64_ADDR16 R_PPC_ADDR16 /* 16bit absolute address. */
291#define R_PPC64_ADDR16_LO R_PPC_ADDR16_LO /* lower 16bits of abs. address. */
292#define R_PPC64_ADDR16_HI R_PPC_ADDR16_HI /* high 16bits of abs. address. */
293#define R_PPC64_ADDR16_HA R_PPC_ADDR16_HA /* adjusted high 16bits. */
294#define R_PPC64_ADDR14 R_PPC_ADDR14 /* 16bit address, word aligned. */
295#define R_PPC64_ADDR14_BRTAKEN R_PPC_ADDR14_BRTAKEN
296#define R_PPC64_ADDR14_BRNTAKEN R_PPC_ADDR14_BRNTAKEN
297#define R_PPC64_REL24 R_PPC_REL24 /* PC relative 26 bit, word aligned. */
298#define R_PPC64_REL14 R_PPC_REL14 /* PC relative 16 bit. */
299#define R_PPC64_REL14_BRTAKEN R_PPC_REL14_BRTAKEN
300#define R_PPC64_REL14_BRNTAKEN R_PPC_REL14_BRNTAKEN
301#define R_PPC64_GOT16 R_PPC_GOT16
302#define R_PPC64_GOT16_LO R_PPC_GOT16_LO
303#define R_PPC64_GOT16_HI R_PPC_GOT16_HI
304#define R_PPC64_GOT16_HA R_PPC_GOT16_HA
305
306#define R_PPC64_COPY R_PPC_COPY
307#define R_PPC64_GLOB_DAT R_PPC_GLOB_DAT
308#define R_PPC64_JMP_SLOT R_PPC_JMP_SLOT
309#define R_PPC64_RELATIVE R_PPC_RELATIVE
310
311#define R_PPC64_UADDR32 R_PPC_UADDR32
312#define R_PPC64_UADDR16 R_PPC_UADDR16
313#define R_PPC64_REL32 R_PPC_REL32
314#define R_PPC64_PLT32 R_PPC_PLT32
315#define R_PPC64_PLTREL32 R_PPC_PLTREL32
316#define R_PPC64_PLT16_LO R_PPC_PLT16_LO
317#define R_PPC64_PLT16_HI R_PPC_PLT16_HI
318#define R_PPC64_PLT16_HA R_PPC_PLT16_HA
319
320#define R_PPC64_SECTOFF R_PPC_SECTOFF
321#define R_PPC64_SECTOFF_LO R_PPC_SECTOFF_LO
322#define R_PPC64_SECTOFF_HI R_PPC_SECTOFF_HI
323#define R_PPC64_SECTOFF_HA R_PPC_SECTOFF_HA
324#define R_PPC64_ADDR30 37 /* word30 (S + A - P) >> 2. */
325#define R_PPC64_ADDR64 38 /* doubleword64 S + A. */
326#define R_PPC64_ADDR16_HIGHER 39 /* half16 #higher(S + A). */
327#define R_PPC64_ADDR16_HIGHERA 40 /* half16 #highera(S + A). */
328#define R_PPC64_ADDR16_HIGHEST 41 /* half16 #highest(S + A). */
329#define R_PPC64_ADDR16_HIGHESTA 42 /* half16 #highesta(S + A). */
330#define R_PPC64_UADDR64 43 /* doubleword64 S + A. */
331#define R_PPC64_REL64 44 /* doubleword64 S + A - P. */
332#define R_PPC64_PLT64 45 /* doubleword64 L + A. */
333#define R_PPC64_PLTREL64 46 /* doubleword64 L + A - P. */
334#define R_PPC64_TOC16 47 /* half16* S + A - .TOC. */
335#define R_PPC64_TOC16_LO 48 /* half16 #lo(S + A - .TOC.). */
336#define R_PPC64_TOC16_HI 49 /* half16 #hi(S + A - .TOC.). */
337#define R_PPC64_TOC16_HA 50 /* half16 #ha(S + A - .TOC.). */
338#define R_PPC64_TOC 51 /* doubleword64 .TOC. */
339#define R_PPC64_PLTGOT16 52 /* half16* M + A. */
340#define R_PPC64_PLTGOT16_LO 53 /* half16 #lo(M + A). */
341#define R_PPC64_PLTGOT16_HI 54 /* half16 #hi(M + A). */
342#define R_PPC64_PLTGOT16_HA 55 /* half16 #ha(M + A). */
343
344#define R_PPC64_ADDR16_DS 56 /* half16ds* (S + A) >> 2. */
345#define R_PPC64_ADDR16_LO_DS 57 /* half16ds #lo(S + A) >> 2. */
346#define R_PPC64_GOT16_DS 58 /* half16ds* (G + A) >> 2. */
347#define R_PPC64_GOT16_LO_DS 59 /* half16ds #lo(G + A) >> 2. */
348#define R_PPC64_PLT16_LO_DS 60 /* half16ds #lo(L + A) >> 2. */
349#define R_PPC64_SECTOFF_DS 61 /* half16ds* (R + A) >> 2. */
350#define R_PPC64_SECTOFF_LO_DS 62 /* half16ds #lo(R + A) >> 2. */
351#define R_PPC64_TOC16_DS 63 /* half16ds* (S + A - .TOC.) >> 2. */
352#define R_PPC64_TOC16_LO_DS 64 /* half16ds #lo(S + A - .TOC.) >> 2. */
353#define R_PPC64_PLTGOT16_DS 65 /* half16ds* (M + A) >> 2. */
354#define R_PPC64_PLTGOT16_LO_DS 66 /* half16ds #lo(M + A) >> 2. */
355
356/* PowerPC64 relocations defined for the TLS access ABI. */
357#define R_PPC64_TLS 67 /* none (sym+add)@tls */
358#define R_PPC64_DTPMOD64 68 /* doubleword64 (sym+add)@dtpmod */
359#define R_PPC64_TPREL16 69 /* half16* (sym+add)@tprel */
360#define R_PPC64_TPREL16_LO 70 /* half16 (sym+add)@tprel@l */
361#define R_PPC64_TPREL16_HI 71 /* half16 (sym+add)@tprel@h */
362#define R_PPC64_TPREL16_HA 72 /* half16 (sym+add)@tprel@ha */
363#define R_PPC64_TPREL64 73 /* doubleword64 (sym+add)@tprel */
364#define R_PPC64_DTPREL16 74 /* half16* (sym+add)@dtprel */
365#define R_PPC64_DTPREL16_LO 75 /* half16 (sym+add)@dtprel@l */
366#define R_PPC64_DTPREL16_HI 76 /* half16 (sym+add)@dtprel@h */
367#define R_PPC64_DTPREL16_HA 77 /* half16 (sym+add)@dtprel@ha */
368#define R_PPC64_DTPREL64 78 /* doubleword64 (sym+add)@dtprel */
369#define R_PPC64_GOT_TLSGD16 79 /* half16* (sym+add)@got@tlsgd */
370#define R_PPC64_GOT_TLSGD16_LO 80 /* half16 (sym+add)@got@tlsgd@l */
371#define R_PPC64_GOT_TLSGD16_HI 81 /* half16 (sym+add)@got@tlsgd@h */
372#define R_PPC64_GOT_TLSGD16_HA 82 /* half16 (sym+add)@got@tlsgd@ha */
373#define R_PPC64_GOT_TLSLD16 83 /* half16* (sym+add)@got@tlsld */
374#define R_PPC64_GOT_TLSLD16_LO 84 /* half16 (sym+add)@got@tlsld@l */
375#define R_PPC64_GOT_TLSLD16_HI 85 /* half16 (sym+add)@got@tlsld@h */
376#define R_PPC64_GOT_TLSLD16_HA 86 /* half16 (sym+add)@got@tlsld@ha */
377#define R_PPC64_GOT_TPREL16_DS 87 /* half16ds* (sym+add)@got@tprel */
378#define R_PPC64_GOT_TPREL16_LO_DS 88 /* half16ds (sym+add)@got@tprel@l */
379#define R_PPC64_GOT_TPREL16_HI 89 /* half16 (sym+add)@got@tprel@h */
380#define R_PPC64_GOT_TPREL16_HA 90 /* half16 (sym+add)@got@tprel@ha */
381#define R_PPC64_GOT_DTPREL16_DS 91 /* half16ds* (sym+add)@got@dtprel */
382#define R_PPC64_GOT_DTPREL16_LO_DS 92 /* half16ds (sym+add)@got@dtprel@l */
383#define R_PPC64_GOT_DTPREL16_HI 93 /* half16 (sym+add)@got@dtprel@h */
384#define R_PPC64_GOT_DTPREL16_HA 94 /* half16 (sym+add)@got@dtprel@ha */
385#define R_PPC64_TPREL16_DS 95 /* half16ds* (sym+add)@tprel */
386#define R_PPC64_TPREL16_LO_DS 96 /* half16ds (sym+add)@tprel@l */
387#define R_PPC64_TPREL16_HIGHER 97 /* half16 (sym+add)@tprel@higher */
388#define R_PPC64_TPREL16_HIGHERA 98 /* half16 (sym+add)@tprel@highera */
389#define R_PPC64_TPREL16_HIGHEST 99 /* half16 (sym+add)@tprel@highest */
390#define R_PPC64_TPREL16_HIGHESTA 100 /* half16 (sym+add)@tprel@highesta */
391#define R_PPC64_DTPREL16_DS 101 /* half16ds* (sym+add)@dtprel */
392#define R_PPC64_DTPREL16_LO_DS 102 /* half16ds (sym+add)@dtprel@l */
393#define R_PPC64_DTPREL16_HIGHER 103 /* half16 (sym+add)@dtprel@higher */
394#define R_PPC64_DTPREL16_HIGHERA 104 /* half16 (sym+add)@dtprel@highera */
395#define R_PPC64_DTPREL16_HIGHEST 105 /* half16 (sym+add)@dtprel@highest */
396#define R_PPC64_DTPREL16_HIGHESTA 106 /* half16 (sym+add)@dtprel@highesta */
397
398/* Keep this the last entry. */
399#define R_PPC64_NUM 107
400
401#endif /* __PPC64_ELF_H */