/*
* This file is subject to the terms and conditions of the GNU General Public
* License . See the file " COPYING " in the main directory of this archive
* for more details .
*
* Much of this is taken from binutils and GNU libc . . .
*/
#ifndef _ASM_ELF_H
#define _ASM_ELF_H
#include <linux/auxvec.h>
#include <linux/fs.h>
#include <linux/mm_types.h>
#include <uapi/linux/elf.h>
#include <asm /current.h>
/* ELF header e_flags defines. */
/* MIPS architecture level. */
#define EF_MIPS_ARCH_1 0 x00000000 /* -mips1 code. */
#define EF_MIPS_ARCH_2 0 x10000000 /* -mips2 code. */
#define EF_MIPS_ARCH_3 0 x20000000 /* -mips3 code. */
#define EF_MIPS_ARCH_4 0 x30000000 /* -mips4 code. */
#define EF_MIPS_ARCH_5 0 x40000000 /* -mips5 code. */
#define EF_MIPS_ARCH_32 0 x50000000 /* MIPS32 code. */
#define EF_MIPS_ARCH_64 0 x60000000 /* MIPS64 code. */
#define EF_MIPS_ARCH_32R2 0 x70000000 /* MIPS32 R2 code. */
#define EF_MIPS_ARCH_64R2 0 x80000000 /* MIPS64 R2 code. */
/* The ABI of a file. */
#define EF_MIPS_ABI_O32 0 x00001000 /* O32 ABI. */
#define EF_MIPS_ABI_O64 0 x00002000 /* O32 extended for 64 bit. */
#define PT_MIPS_REGINFO 0 x70000000
#define PT_MIPS_RTPROC 0 x70000001
#define PT_MIPS_OPTIONS 0 x70000002
#define PT_MIPS_ABIFLAGS 0 x70000003
/* Flags in the e_flags field of the header */
#define EF_MIPS_NOREORDER 0 x00000001
#define EF_MIPS_PIC 0 x00000002
#define EF_MIPS_CPIC 0 x00000004
#define EF_MIPS_ABI2 0 x00000020
#define EF_MIPS_OPTIONS_FIRST 0 x00000080
#define EF_MIPS_32BITMODE 0 x00000100
#define EF_MIPS_FP64 0 x00000200
#define EF_MIPS_NAN2008 0 x00000400
#define EF_MIPS_ABI 0 x0000f000
#define EF_MIPS_ARCH 0 xf0000000
#define DT_MIPS_RLD_VERSION 0 x70000001
#define DT_MIPS_TIME_STAMP 0 x70000002
#define DT_MIPS_ICHECKSUM 0 x70000003
#define DT_MIPS_IVERSION 0 x70000004
#define DT_MIPS_FLAGS 0 x70000005
#define RHF_NONE 0 x00000000
#define RHF_HARDWAY 0 x00000001
#define RHF_NOTPOT 0 x00000002
#define RHF_SGI_ONLY 0 x00000010
#define DT_MIPS_BASE_ADDRESS 0 x70000006
#define DT_MIPS_CONFLICT 0 x70000008
#define DT_MIPS_LIBLIST 0 x70000009
#define DT_MIPS_LOCAL_GOTNO 0 x7000000a
#define DT_MIPS_CONFLICTNO 0 x7000000b
#define DT_MIPS_LIBLISTNO 0 x70000010
#define DT_MIPS_SYMTABNO 0 x70000011
#define DT_MIPS_UNREFEXTNO 0 x70000012
#define DT_MIPS_GOTSYM 0 x70000013
#define DT_MIPS_HIPAGENO 0 x70000014
#define DT_MIPS_RLD_MAP 0 x70000016
#define R_MIPS_NONE 0
#define R_MIPS_16 1
#define R_MIPS_32 2
#define R_MIPS_REL32 3
#define R_MIPS_26 4
#define R_MIPS_HI16 5
#define R_MIPS_LO16 6
#define R_MIPS_GPREL16 7
#define R_MIPS_LITERAL 8
#define R_MIPS_GOT16 9
#define R_MIPS_PC16 10
#define R_MIPS_CALL16 11
#define R_MIPS_GPREL32 12
/* The remaining relocs are defined on Irix, although they are not
in the MIPS ELF ABI. */
#define R_MIPS_UNUSED1 13
#define R_MIPS_UNUSED2 14
#define R_MIPS_UNUSED3 15
#define R_MIPS_SHIFT5 16
#define R_MIPS_SHIFT6 17
#define R_MIPS_64 18
#define R_MIPS_GOT_DISP 19
#define R_MIPS_GOT_PAGE 20
#define R_MIPS_GOT_OFST 21
/*
* The following two relocation types are specified in the MIPS ABI
* conformance guide version 1 . 2 but not yet in the psABI .
*/
#define R_MIPS_GOTHI16 22
#define R_MIPS_GOTLO16 23
#define R_MIPS_SUB 24
#define R_MIPS_INSERT_A 25
#define R_MIPS_INSERT_B 26
#define R_MIPS_DELETE 27
#define R_MIPS_HIGHER 28
#define R_MIPS_HIGHEST 29
/*
* The following two relocation types are specified in the MIPS ABI
* conformance guide version 1 . 2 but not yet in the psABI .
*/
#define R_MIPS_CALLHI16 30
#define R_MIPS_CALLLO16 31
/*
* Introduced for MIPSr6 .
*/
#define R_MIPS_PC21_S2 60
#define R_MIPS_PC26_S2 61
/*
* This range is reserved for vendor specific relocations .
*/
#define R_MIPS_LOVENDOR 100
#define R_MIPS_HIVENDOR 127
#define SHN_MIPS_ACCOMON 0 xff00 /* Allocated common symbols */
#define SHN_MIPS_TEXT 0 xff01 /* Allocated test symbols. */
#define SHN_MIPS_DATA 0 xff02 /* Allocated data symbols. */
#define SHN_MIPS_SCOMMON 0 xff03 /* Small common symbols */
#define SHN_MIPS_SUNDEFINED 0 xff04 /* Small undefined symbols */
#define SHT_MIPS_LIST 0 x70000000
#define SHT_MIPS_CONFLICT 0 x70000002
#define SHT_MIPS_GPTAB 0 x70000003
#define SHT_MIPS_UCODE 0 x70000004
#define SHT_MIPS_DEBUG 0 x70000005
#define SHT_MIPS_REGINFO 0 x70000006
#define SHT_MIPS_PACKAGE 0 x70000007
#define SHT_MIPS_PACKSYM 0 x70000008
#define SHT_MIPS_RELD 0 x70000009
#define SHT_MIPS_IFACE 0 x7000000b
#define SHT_MIPS_CONTENT 0 x7000000c
#define SHT_MIPS_OPTIONS 0 x7000000d
#define SHT_MIPS_SHDR 0 x70000010
#define SHT_MIPS_FDESC 0 x70000011
#define SHT_MIPS_EXTSYM 0 x70000012
#define SHT_MIPS_DENSE 0 x70000013
#define SHT_MIPS_PDESC 0 x70000014
#define SHT_MIPS_LOCSYM 0 x70000015
#define SHT_MIPS_AUXSYM 0 x70000016
#define SHT_MIPS_OPTSYM 0 x70000017
#define SHT_MIPS_LOCSTR 0 x70000018
#define SHT_MIPS_LINE 0 x70000019
#define SHT_MIPS_RFDESC 0 x7000001a
#define SHT_MIPS_DELTASYM 0 x7000001b
#define SHT_MIPS_DELTAINST 0 x7000001c
#define SHT_MIPS_DELTACLASS 0 x7000001d
#define SHT_MIPS_DWARF 0 x7000001e
#define SHT_MIPS_DELTADECL 0 x7000001f
#define SHT_MIPS_SYMBOL_LIB 0 x70000020
#define SHT_MIPS_EVENTS 0 x70000021
#define SHT_MIPS_TRANSLATE 0 x70000022
#define SHT_MIPS_PIXIE 0 x70000023
#define SHT_MIPS_XLATE 0 x70000024
#define SHT_MIPS_XLATE_DEBUG 0 x70000025
#define SHT_MIPS_WHIRL 0 x70000026
#define SHT_MIPS_EH_REGION 0 x70000027
#define SHT_MIPS_XLATE_OLD 0 x70000028
#define SHT_MIPS_PDR_EXCEPTION 0 x70000029
#define SHF_MIPS_GPREL 0 x10000000
#define SHF_MIPS_MERGE 0 x20000000
#define SHF_MIPS_ADDR 0 x40000000
#define SHF_MIPS_STRING 0 x80000000
#define SHF_MIPS_NOSTRIP 0 x08000000
#define SHF_MIPS_LOCAL 0 x04000000
#define SHF_MIPS_NAMES 0 x02000000
#define SHF_MIPS_NODUPES 0 x01000000
#define MIPS_ABI_FP_ANY 0 /* FP ABI doesn't matter */
#define MIPS_ABI_FP_DOUBLE 1 /* -mdouble-float */
#define MIPS_ABI_FP_SINGLE 2 /* -msingle-float */
#define MIPS_ABI_FP_SOFT 3 /* -msoft-float */
#define MIPS_ABI_FP_OLD_64 4 /* -mips32r2 -mfp64 */
#define MIPS_ABI_FP_XX 5 /* -mfpxx */
#define MIPS_ABI_FP_64 6 /* -mips32r2 -mfp64 */
#define MIPS_ABI_FP_64A 7 /* -mips32r2 -mfp64 -mno-odd-spreg */
struct mips_elf_abiflags_v0 {
uint16_t version; /* Version of flags structure */
uint8_t isa_level; /* The level of the ISA: 1-5, 32, 64 */
uint8_t isa_rev; /* The revision of ISA: 0 for MIPS V and below,
1-n otherwise */
uint8_t gpr_size; /* The size of general purpose registers */
uint8_t cpr1_size; /* The size of co-processor 1 registers */
uint8_t cpr2_size; /* The size of co-processor 2 registers */
uint8_t fp_abi; /* The floating-point ABI */
uint32_t isa_ext; /* Mask of processor-specific extensions */
uint32_t ases; /* Mask of ASEs used */
uint32_t flags1; /* Mask of general flags */
uint32_t flags2;
};
/* ELF register definitions */
#define ELF_NGREG 45
#define ELF_NFPREG 33
typedef unsigned long elf_greg_t;
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
typedef double elf_fpreg_t;
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
void mips_dump_regs32(u32 *uregs, const struct pt_regs *regs);
void mips_dump_regs64(u64 *uregs, const struct pt_regs *regs);
#ifdef CONFIG_32BIT
/*
* This is used to ensure we don ' t load something for the wrong architecture .
*/
#define elf_check_arch elf32_check_arch
/*
* These are used to set parameters in the core dumps .
*/
#define ELF_CLASS ELFCLASS32
#define ELF_CORE_COPY_REGS(dest, regs) \
mips_dump_regs32((u32 *)&(dest), (regs));
#endif /* CONFIG_32BIT */
#ifdef CONFIG_64BIT
/*
* This is used to ensure we don ' t load something for the wrong architecture .
*/
#define elf_check_arch elf64_check_arch
#define compat_elf_check_arch elf32_check_arch
/*
* These are used to set parameters in the core dumps .
*/
#define ELF_CLASS ELFCLASS64
#define ELF_CORE_COPY_REGS(dest, regs) \
mips_dump_regs64((u64 *)&(dest), (regs));
#endif /* CONFIG_64BIT */
/*
* These are used to set parameters in the core dumps .
*/
#ifdef __MIPSEB__
#define ELF_DATA ELFDATA2MSB
#elif defined (__MIPSEL__)
#define ELF_DATA ELFDATA2LSB
#endif
#define ELF_ARCH EM_MIPS
/*
* In order to be sure that we don ' t attempt to execute an O32 binary which
* requires 64 bit FP ( FR = 1 ) on a system which does not support it we refuse
* to execute any binary which has bits specified by the following macro set
* in its ELF header flags .
*/
#ifdef CONFIG_MIPS_O32_FP64_SUPPORT
# define __MIPS_O32_FP64_MUST_BE_ZERO 0
#else
# define __MIPS_O32_FP64_MUST_BE_ZERO EF_MIPS_FP64
#endif
#define mips_elf_check_machine(x) ((x)->e_machine == EM_MIPS)
#define vmcore_elf32_check_arch mips_elf_check_machine
#define vmcore_elf64_check_arch mips_elf_check_machine
/*
* Return non - zero if HDR identifies an o32 or n32 ELF binary .
*/
#define elf32_check_arch(hdr) \
({ \
int __res = 1 ; \
struct elfhdr *__h = (hdr); \
\
if (!mips_elf_check_machine(__h)) \
__res = 0 ; \
if (__h->e_ident[EI_CLASS] != ELFCLASS32) \
__res = 0 ; \
if ((__h->e_flags & EF_MIPS_ABI2) != 0 ) { \
if (!IS_ENABLED(CONFIG_MIPS32_N32) || \
(__h->e_flags & EF_MIPS_ABI)) \
__res = 0 ; \
} else { \
if (IS_ENABLED(CONFIG_64BIT) && !IS_ENABLED(CONFIG_MIPS32_O32)) \
__res = 0 ; \
if (((__h->e_flags & EF_MIPS_ABI) != 0 ) && \
((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \
__res = 0 ; \
if (__h->e_flags & __MIPS_O32_FP64_MUST_BE_ZERO) \
__res = 0 ; \
} \
__res; \
})
/*
* Return non - zero if HDR identifies an n64 ELF binary .
*/
#define elf64_check_arch(hdr) \
({ \
int __res = 1 ; \
struct elfhdr *__h = (hdr); \
\
if (!mips_elf_check_machine(__h)) \
__res = 0 ; \
if (__h->e_ident[EI_CLASS] != ELFCLASS64) \
__res = 0 ; \
\
__res; \
})
struct mips_abi;
extern struct mips_abi mips_abi;
extern struct mips_abi mips_abi_32;
extern struct mips_abi mips_abi_n32;
#ifdef CONFIG_32BIT
#define SET_PERSONALITY2(ex, state) \
do { \
clear_thread_flag(TIF_HYBRID_FPREGS); \
set_thread_flag(TIF_32BIT_FPREGS); \
\
current->thread.abi = &mips_abi; \
\
mips_set_personality_fp(state); \
mips_set_personality_nan(state); \
\
if (personality(current->personality) != PER_LINUX) \
set_personality(PER_LINUX); \
} while (0 )
#endif /* CONFIG_32BIT */
#ifdef CONFIG_64BIT
#ifdef CONFIG_MIPS32_N32
#define __SET_PERSONALITY32_N32() \
do { \
set_thread_flag(TIF_32BIT_ADDR); \
\
current->thread.abi = &mips_abi_n32; \
} while (0 )
#else
#define __SET_PERSONALITY32_N32() \
do { } while (0 )
#endif
#ifdef CONFIG_MIPS32_O32
#define __SET_PERSONALITY32_O32(ex, state) \
do { \
set_thread_flag(TIF_32BIT_REGS); \
set_thread_flag(TIF_32BIT_ADDR); \
clear_thread_flag(TIF_HYBRID_FPREGS); \
set_thread_flag(TIF_32BIT_FPREGS); \
\
current->thread.abi = &mips_abi_32; \
\
mips_set_personality_fp(state); \
} while (0 )
#else
#define __SET_PERSONALITY32_O32(ex, state) \
do { } while (0 )
#endif
#ifdef CONFIG_MIPS32_COMPAT
#define __SET_PERSONALITY32(ex, state) \
do { \
if ((((ex).e_flags & EF_MIPS_ABI2) != 0 ) && \
((ex).e_flags & EF_MIPS_ABI) == 0 ) \
__SET_PERSONALITY32_N32(); \
else \
__SET_PERSONALITY32_O32(ex, state); \
} while (0 )
#else
#define __SET_PERSONALITY32(ex, state) do { } while (0 )
#endif
#define SET_PERSONALITY2(ex, state) \
do { \
unsigned int p; \
\
clear_thread_flag(TIF_32BIT_REGS); \
clear_thread_flag(TIF_32BIT_FPREGS); \
clear_thread_flag(TIF_HYBRID_FPREGS); \
clear_thread_flag(TIF_32BIT_ADDR); \
current->personality &= ~READ_IMPLIES_EXEC; \
\
if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
__SET_PERSONALITY32(ex, state); \
else \
current->thread.abi = &mips_abi; \
\
mips_set_personality_nan(state); \
\
p = personality(current->personality); \
if (p != PER_LINUX32 && p != PER_LINUX) \
set_personality(PER_LINUX); \
} while (0 )
#endif /* CONFIG_64BIT */
#define CORE_DUMP_USE_REGSET
#define ELF_EXEC_PAGESIZE PAGE_SIZE
/* 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 (elf_hwcap)
extern unsigned int elf_hwcap;
#include <asm /hwcap.h>
/*
* 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 .
*/
#define ELF_PLATFORM __elf_platform
extern const char *__elf_platform;
#define ELF_BASE_PLATFORM __elf_base_platform
extern const char *__elf_base_platform;
/*
* See comments in asm - alpha / elf . h , this is the same thing
* on the MIPS .
*/
#define ELF_PLAT_INIT(_r, load_addr) do { \
_r->regs[1 ] = _r->regs[2 ] = _r->regs[3 ] = _r->regs[4 ] = 0 ; \
_r->regs[5 ] = _r->regs[6 ] = _r->regs[7 ] = _r->regs[8 ] = 0 ; \
_r->regs[9 ] = _r->regs[10 ] = _r->regs[11 ] = _r->regs[12 ] = 0 ; \
_r->regs[13 ] = _r->regs[14 ] = _r->regs[15 ] = _r->regs[16 ] = 0 ; \
_r->regs[17 ] = _r->regs[18 ] = _r->regs[19 ] = _r->regs[20 ] = 0 ; \
_r->regs[21 ] = _r->regs[22 ] = _r->regs[23 ] = _r->regs[24 ] = 0 ; \
_r->regs[25 ] = _r->regs[26 ] = _r->regs[27 ] = _r->regs[28 ] = 0 ; \
_r->regs[30 ] = _r->regs[31 ] = 0 ; \
} while (0 )
/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
use of this is to invoke " . / ld . so someprog " to test out a new version of
the loader . We need to make sure that it is out of the way of the program
that it will "exec", and that there is sufficient room for the brk. */
#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2 )
/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
#define ARCH_DLINFO \
do { \
NEW_AUX_ENT(AT_SYSINFO_EHDR, \
(unsigned long )current->mm->context.vdso); \
} while (0 )
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
struct linux_binprm;
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
int uses_interp);
#ifdef CONFIG_MIPS_FP_SUPPORT
struct arch_elf_state {
int nan_2008;
int fp_abi;
int interp_fp_abi;
int overall_fp_mode;
};
#define MIPS_ABI_FP_UNKNOWN (-1 ) /* Unknown FP ABI (kernel internal) */
#define INIT_ARCH_ELF_STATE { \
.nan_2008 = -1 , \
.fp_abi = MIPS_ABI_FP_UNKNOWN, \
.interp_fp_abi = MIPS_ABI_FP_UNKNOWN, \
.overall_fp_mode = -1 , \
}
extern int arch_elf_pt_proc(void *ehdr, void *phdr, struct file *elf,
bool is_interp, struct arch_elf_state *state);
extern int arch_check_elf(void *ehdr, bool has_interpreter, void *interp_ehdr,
struct arch_elf_state *state);
/* Whether to accept legacy-NaN and 2008-NaN user binaries. */
extern bool mips_use_nan_legacy;
extern bool mips_use_nan_2008;
extern void mips_set_personality_nan(struct arch_elf_state *state);
extern void mips_set_personality_fp(struct arch_elf_state *state);
#else /* !CONFIG_MIPS_FP_SUPPORT */
struct arch_elf_state;
static inline void mips_set_personality_nan(struct arch_elf_state *state)
{
/* no-op */
}
static inline void mips_set_personality_fp(struct arch_elf_state *state)
{
/* no-op */
}
#endif /* !CONFIG_MIPS_FP_SUPPORT */
#define elf_read_implies_exec(ex, stk) mips_elf_read_implies_exec(&(ex), stk)
extern int mips_elf_read_implies_exec(void *elf_ex, int exstack);
#endif /* _ASM_ELF_H */
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(vorverarbeitet am 2026-09-27)
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