![Andrey Ryabinin](/assets/img/avatar_default.png)
Almost all arches define ELF_ET_DYN_BASE as 2/3 of TASK_SIZE. Though it seems that some architectures do this in a wrong way. The problem is that 2*TASK_SIZE may overflow 32-bits so the real ELF_ET_DYN_BASE becomes wrong. Fix this overflow by dividing TASK_SIZE prior to multiplying: (TASK_SIZE / 3 * 2) Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com> Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
#ifndef __ASM_AVR32_ELF_H
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#define __ASM_AVR32_ELF_H
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/* AVR32 relocation numbers */
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#define R_AVR32_NONE 0
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#define R_AVR32_32 1
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#define R_AVR32_16 2
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#define R_AVR32_8 3
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#define R_AVR32_32_PCREL 4
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#define R_AVR32_16_PCREL 5
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#define R_AVR32_8_PCREL 6
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#define R_AVR32_DIFF32 7
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#define R_AVR32_DIFF16 8
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#define R_AVR32_DIFF8 9
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#define R_AVR32_GOT32 10
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#define R_AVR32_GOT16 11
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#define R_AVR32_GOT8 12
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#define R_AVR32_21S 13
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#define R_AVR32_16U 14
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#define R_AVR32_16S 15
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#define R_AVR32_8S 16
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#define R_AVR32_8S_EXT 17
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#define R_AVR32_22H_PCREL 18
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#define R_AVR32_18W_PCREL 19
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#define R_AVR32_16B_PCREL 20
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#define R_AVR32_16N_PCREL 21
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#define R_AVR32_14UW_PCREL 22
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#define R_AVR32_11H_PCREL 23
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#define R_AVR32_10UW_PCREL 24
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#define R_AVR32_9H_PCREL 25
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#define R_AVR32_9UW_PCREL 26
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#define R_AVR32_HI16 27
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#define R_AVR32_LO16 28
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#define R_AVR32_GOTPC 29
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#define R_AVR32_GOTCALL 30
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#define R_AVR32_LDA_GOT 31
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#define R_AVR32_GOT21S 32
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#define R_AVR32_GOT18SW 33
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#define R_AVR32_GOT16S 34
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#define R_AVR32_GOT7UW 35
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#define R_AVR32_32_CPENT 36
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#define R_AVR32_CPCALL 37
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#define R_AVR32_16_CP 38
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#define R_AVR32_9W_CP 39
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#define R_AVR32_RELATIVE 40
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#define R_AVR32_GLOB_DAT 41
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#define R_AVR32_JMP_SLOT 42
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#define R_AVR32_ALIGN 43
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/*
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* ELF register definitions..
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*/
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#include <asm/ptrace.h>
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#include <asm/user.h>
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typedef unsigned long elf_greg_t;
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#define ELF_NGREG (sizeof (struct pt_regs) / sizeof (elf_greg_t))
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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typedef struct user_fpu_struct elf_fpregset_t;
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/*
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* This is used to ensure we don't load something for the wrong architecture.
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*/
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#define elf_check_arch(x) ( (x)->e_machine == EM_AVR32 )
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/*
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* These are used to set parameters in the core dumps.
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*/
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#define ELF_CLASS ELFCLASS32
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#ifdef __LITTLE_ENDIAN__
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#define ELF_DATA ELFDATA2LSB
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#else
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#define ELF_DATA ELFDATA2MSB
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#endif
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#define ELF_ARCH EM_AVR32
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#define ELF_EXEC_PAGESIZE 4096
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/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
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use of this is to invoke "./ld.so someprog" to test out a new version of
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the loader. We need to make sure that it is out of the way of the program
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that it will "exec", and that there is sufficient room for the brk. */
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#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
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/* This yields a mask that user programs can use to figure out what
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instruction set this CPU supports. This could be done in user space,
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but it's not easy, and we've already done it here. */
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#define ELF_HWCAP (0)
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/* This yields a string that ld.so will use to load implementation
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specific libraries for optimization. This is more specific in
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intent than poking at uname or /proc/cpuinfo.
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For the moment, we have only optimizations for the Intel generations,
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but that could change... */
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#define ELF_PLATFORM (NULL)
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#endif /* __ASM_AVR32_ELF_H */
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