elf.h

来自「Linux Kernel 2.6.9 for OMAP1710」· C头文件 代码 · 共 381 行 · 第 1/2 页

/* This yields a mask that user programs can use to figure out what
   instruction set this cpu supports.  This could be done in userspace,
   but it's not easy, and we've already done it here.  */

#define ELF_HWCAP	(cur_cpu_spec->cpu_user_features)

/* This yields a string that ld.so will use to load implementation
   specific libraries for optimization.  This is more specific in
   intent than poking at uname or /proc/cpuinfo.

   For the moment, we have only optimizations for the Intel generations,
   but that could change... */

#define ELF_PLATFORM	(NULL)

#define ELF_PLAT_INIT(_r, load_addr)	do { \
	memset(_r->gpr, 0, sizeof(_r->gpr)); \
	_r->ctr = _r->link = _r->xer = _r->ccr = 0; \
	_r->gpr[2] = load_addr; \
} while (0)

#ifdef __KERNEL__
#define SET_PERSONALITY(ex, ibcs2)				\
do {								\
	unsigned long new_flags = 0;				\
	if ((ex).e_ident[EI_CLASS] == ELFCLASS32)		\
		new_flags = _TIF_32BIT;				\
	if ((current_thread_info()->flags & _TIF_32BIT)		\
	    != new_flags)					\
		set_thread_flag(TIF_ABI_PENDING);		\
	else							\
		clear_thread_flag(TIF_ABI_PENDING);		\
	if (ibcs2)						\
		set_personality(PER_SVR4);			\
	else if (current->personality != PER_LINUX32)		\
		set_personality(PER_LINUX);			\
} while (0)
#endif

/*
 * We need to put in some extra aux table entries to tell glibc what
 * the cache block size is, so it can use the dcbz instruction safely.
 */
#define AT_DCACHEBSIZE		19
#define AT_ICACHEBSIZE		20
#define AT_UCACHEBSIZE		21
/* A special ignored type value for PPC, for glibc compatibility.  */
#define AT_IGNOREPPC		22

extern int dcache_bsize;
extern int icache_bsize;
extern int ucache_bsize;

/*
 * The requirements here are:
 * - keep the final alignment of sp (sp & 0xf)
 * - make sure the 32-bit value at the first 16 byte aligned position of
 *   AUXV is greater than 16 for glibc compatibility.
 *   AT_IGNOREPPC is used for that.
 * - for compatibility with glibc ARCH_DLINFO must always be defined on PPC,
 *   even if DLINFO_ARCH_ITEMS goes to zero or is undefined.
 */
#define ARCH_DLINFO							\
do {									\
	/* Handle glibc compatibility. */				\
	NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC);			\
	NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC);			\
	/* Cache size items */						\
	NEW_AUX_ENT(AT_DCACHEBSIZE, dcache_bsize);			\
	NEW_AUX_ENT(AT_ICACHEBSIZE, icache_bsize);			\
	NEW_AUX_ENT(AT_UCACHEBSIZE, ucache_bsize);			\
 } while (0)

/* PowerPC64 relocations defined by the ABIs */
#define R_PPC64_NONE    R_PPC_NONE
#define R_PPC64_ADDR32  R_PPC_ADDR32  /* 32bit absolute address.  */
#define R_PPC64_ADDR24  R_PPC_ADDR24  /* 26bit address, word aligned.  */
#define R_PPC64_ADDR16  R_PPC_ADDR16  /* 16bit absolute address. */
#define R_PPC64_ADDR16_LO R_PPC_ADDR16_LO /* lower 16bits of abs. address.  */
#define R_PPC64_ADDR16_HI R_PPC_ADDR16_HI /* high 16bits of abs. address. */
#define R_PPC64_ADDR16_HA R_PPC_ADDR16_HA /* adjusted high 16bits.  */
#define R_PPC64_ADDR14 R_PPC_ADDR14   /* 16bit address, word aligned.  */
#define R_PPC64_ADDR14_BRTAKEN  R_PPC_ADDR14_BRTAKEN
#define R_PPC64_ADDR14_BRNTAKEN R_PPC_ADDR14_BRNTAKEN
#define R_PPC64_REL24   R_PPC_REL24 /* PC relative 26 bit, word aligned.  */
#define R_PPC64_REL14   R_PPC_REL14 /* PC relative 16 bit. */
#define R_PPC64_REL14_BRTAKEN   R_PPC_REL14_BRTAKEN
#define R_PPC64_REL14_BRNTAKEN  R_PPC_REL14_BRNTAKEN
#define R_PPC64_GOT16     R_PPC_GOT16
#define R_PPC64_GOT16_LO  R_PPC_GOT16_LO
#define R_PPC64_GOT16_HI  R_PPC_GOT16_HI
#define R_PPC64_GOT16_HA  R_PPC_GOT16_HA

#define R_PPC64_COPY      R_PPC_COPY
#define R_PPC64_GLOB_DAT  R_PPC_GLOB_DAT
#define R_PPC64_JMP_SLOT  R_PPC_JMP_SLOT
#define R_PPC64_RELATIVE  R_PPC_RELATIVE

#define R_PPC64_UADDR32   R_PPC_UADDR32
#define R_PPC64_UADDR16   R_PPC_UADDR16
#define R_PPC64_REL32     R_PPC_REL32
#define R_PPC64_PLT32     R_PPC_PLT32
#define R_PPC64_PLTREL32  R_PPC_PLTREL32
#define R_PPC64_PLT16_LO  R_PPC_PLT16_LO
#define R_PPC64_PLT16_HI  R_PPC_PLT16_HI
#define R_PPC64_PLT16_HA  R_PPC_PLT16_HA

#define R_PPC64_SECTOFF     R_PPC_SECTOFF
#define R_PPC64_SECTOFF_LO  R_PPC_SECTOFF_LO
#define R_PPC64_SECTOFF_HI  R_PPC_SECTOFF_HI
#define R_PPC64_SECTOFF_HA  R_PPC_SECTOFF_HA
#define R_PPC64_ADDR30          37  /* word30 (S + A - P) >> 2.  */
#define R_PPC64_ADDR64          38  /* doubleword64 S + A.  */
#define R_PPC64_ADDR16_HIGHER   39  /* half16 #higher(S + A).  */
#define R_PPC64_ADDR16_HIGHERA  40  /* half16 #highera(S + A).  */
#define R_PPC64_ADDR16_HIGHEST  41  /* half16 #highest(S + A).  */
#define R_PPC64_ADDR16_HIGHESTA 42  /* half16 #highesta(S + A). */
#define R_PPC64_UADDR64     43  /* doubleword64 S + A.  */
#define R_PPC64_REL64       44  /* doubleword64 S + A - P.  */
#define R_PPC64_PLT64       45  /* doubleword64 L + A.  */
#define R_PPC64_PLTREL64    46  /* doubleword64 L + A - P.  */
#define R_PPC64_TOC16       47  /* half16* S + A - .TOC.  */
#define R_PPC64_TOC16_LO    48  /* half16 #lo(S + A - .TOC.).  */
#define R_PPC64_TOC16_HI    49  /* half16 #hi(S + A - .TOC.).  */
#define R_PPC64_TOC16_HA    50  /* half16 #ha(S + A - .TOC.).  */
#define R_PPC64_TOC         51  /* doubleword64 .TOC. */
#define R_PPC64_PLTGOT16    52  /* half16* M + A.  */
#define R_PPC64_PLTGOT16_LO 53  /* half16 #lo(M + A).  */
#define R_PPC64_PLTGOT16_HI 54  /* half16 #hi(M + A).  */
#define R_PPC64_PLTGOT16_HA 55  /* half16 #ha(M + A).  */

#define R_PPC64_ADDR16_DS      56 /* half16ds* (S + A) >> 2.  */
#define R_PPC64_ADDR16_LO_DS   57 /* half16ds  #lo(S + A) >> 2.  */
#define R_PPC64_GOT16_DS       58 /* half16ds* (G + A) >> 2.  */
#define R_PPC64_GOT16_LO_DS    59 /* half16ds  #lo(G + A) >> 2.  */
#define R_PPC64_PLT16_LO_DS    60 /* half16ds  #lo(L + A) >> 2.  */
#define R_PPC64_SECTOFF_DS     61 /* half16ds* (R + A) >> 2.  */
#define R_PPC64_SECTOFF_LO_DS  62 /* half16ds  #lo(R + A) >> 2.  */
#define R_PPC64_TOC16_DS       63 /* half16ds* (S + A - .TOC.) >> 2.  */
#define R_PPC64_TOC16_LO_DS    64 /* half16ds  #lo(S + A - .TOC.) >> 2.  */
#define R_PPC64_PLTGOT16_DS    65 /* half16ds* (M + A) >> 2.  */
#define R_PPC64_PLTGOT16_LO_DS 66 /* half16ds  #lo(M + A) >> 2.  */

/* PowerPC64 relocations defined for the TLS access ABI.  */
#define R_PPC64_TLS		67 /* none	(sym+add)@tls */
#define R_PPC64_DTPMOD64	68 /* doubleword64 (sym+add)@dtpmod */
#define R_PPC64_TPREL16		69 /* half16*	(sym+add)@tprel */
#define R_PPC64_TPREL16_LO	70 /* half16	(sym+add)@tprel@l */
#define R_PPC64_TPREL16_HI	71 /* half16	(sym+add)@tprel@h */
#define R_PPC64_TPREL16_HA	72 /* half16	(sym+add)@tprel@ha */
#define R_PPC64_TPREL64		73 /* doubleword64 (sym+add)@tprel */
#define R_PPC64_DTPREL16	74 /* half16*	(sym+add)@dtprel */
#define R_PPC64_DTPREL16_LO	75 /* half16	(sym+add)@dtprel@l */
#define R_PPC64_DTPREL16_HI	76 /* half16	(sym+add)@dtprel@h */
#define R_PPC64_DTPREL16_HA	77 /* half16	(sym+add)@dtprel@ha */
#define R_PPC64_DTPREL64	78 /* doubleword64 (sym+add)@dtprel */
#define R_PPC64_GOT_TLSGD16	79 /* half16*	(sym+add)@got@tlsgd */
#define R_PPC64_GOT_TLSGD16_LO	80 /* half16	(sym+add)@got@tlsgd@l */
#define R_PPC64_GOT_TLSGD16_HI	81 /* half16	(sym+add)@got@tlsgd@h */
#define R_PPC64_GOT_TLSGD16_HA	82 /* half16	(sym+add)@got@tlsgd@ha */
#define R_PPC64_GOT_TLSLD16	83 /* half16*	(sym+add)@got@tlsld */
#define R_PPC64_GOT_TLSLD16_LO	84 /* half16	(sym+add)@got@tlsld@l */
#define R_PPC64_GOT_TLSLD16_HI	85 /* half16	(sym+add)@got@tlsld@h */
#define R_PPC64_GOT_TLSLD16_HA	86 /* half16	(sym+add)@got@tlsld@ha */
#define R_PPC64_GOT_TPREL16_DS	87 /* half16ds*	(sym+add)@got@tprel */
#define R_PPC64_GOT_TPREL16_LO_DS 88 /* half16ds (sym+add)@got@tprel@l */
#define R_PPC64_GOT_TPREL16_HI	89 /* half16	(sym+add)@got@tprel@h */
#define R_PPC64_GOT_TPREL16_HA	90 /* half16	(sym+add)@got@tprel@ha */
#define R_PPC64_GOT_DTPREL16_DS	91 /* half16ds*	(sym+add)@got@dtprel */
#define R_PPC64_GOT_DTPREL16_LO_DS 92 /* half16ds (sym+add)@got@dtprel@l */
#define R_PPC64_GOT_DTPREL16_HI	93 /* half16	(sym+add)@got@dtprel@h */
#define R_PPC64_GOT_DTPREL16_HA	94 /* half16	(sym+add)@got@dtprel@ha */
#define R_PPC64_TPREL16_DS	95 /* half16ds*	(sym+add)@tprel */
#define R_PPC64_TPREL16_LO_DS	96 /* half16ds	(sym+add)@tprel@l */
#define R_PPC64_TPREL16_HIGHER	97 /* half16	(sym+add)@tprel@higher */
#define R_PPC64_TPREL16_HIGHERA	98 /* half16	(sym+add)@tprel@highera */
#define R_PPC64_TPREL16_HIGHEST	99 /* half16	(sym+add)@tprel@highest */
#define R_PPC64_TPREL16_HIGHESTA 100 /* half16	(sym+add)@tprel@highesta */
#define R_PPC64_DTPREL16_DS	101 /* half16ds* (sym+add)@dtprel */
#define R_PPC64_DTPREL16_LO_DS	102 /* half16ds	(sym+add)@dtprel@l */
#define R_PPC64_DTPREL16_HIGHER	103 /* half16	(sym+add)@dtprel@higher */
#define R_PPC64_DTPREL16_HIGHERA 104 /* half16	(sym+add)@dtprel@highera */
#define R_PPC64_DTPREL16_HIGHEST 105 /* half16	(sym+add)@dtprel@highest */
#define R_PPC64_DTPREL16_HIGHESTA 106 /* half16	(sym+add)@dtprel@highesta */

/* Keep this the last entry.  */
#define R_PPC64_NUM		107

#endif /* __PPC64_ELF_H */