forked from mirrors/linux
6256734f91
C-SKY historically used 39, the same value as MCORE, from which the architecture was derived. C-SKY binutils support both EM_CSKY and EM_CSKY_OLD, confirmed by binutils:include/elf/common.h Signed-off-by: Guo Ren <ren_guo@c-sky.com>
92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
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#ifndef __ASM_CSKY_ELF_H
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#define __ASM_CSKY_ELF_H
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#include <asm/ptrace.h>
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#include <abi/regdef.h>
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#define ELF_ARCH EM_CSKY
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#define EM_CSKY_OLD 39
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/* CSKY Relocations */
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#define R_CSKY_NONE 0
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#define R_CSKY_32 1
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#define R_CSKY_PCIMM8BY4 2
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#define R_CSKY_PCIMM11BY2 3
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#define R_CSKY_PCIMM4BY2 4
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#define R_CSKY_PC32 5
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#define R_CSKY_PCRELJSR_IMM11BY2 6
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#define R_CSKY_GNU_VTINHERIT 7
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#define R_CSKY_GNU_VTENTRY 8
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#define R_CSKY_RELATIVE 9
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#define R_CSKY_COPY 10
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#define R_CSKY_GLOB_DAT 11
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#define R_CSKY_JUMP_SLOT 12
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#define R_CSKY_ADDR_HI16 24
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#define R_CSKY_ADDR_LO16 25
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#define R_CSKY_PCRELJSR_IMM26BY2 40
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typedef unsigned long elf_greg_t;
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typedef struct user_fp elf_fpregset_t;
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/*
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* In gdb/bfd elf32-csky.c, csky_elf_grok_prstatus() use fixed size of
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* elf_prstatus. It's 148 for abiv1 and 220 for abiv2, the size is enough
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* for coredump and no need full sizeof(struct pt_regs).
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*/
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#define ELF_NGREG ((sizeof(struct pt_regs) / sizeof(elf_greg_t)) - 2)
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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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 == ELF_ARCH) || \
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((x)->e_machine == EM_CSKY_OLD))
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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 USE_ELF_CORE_DUMP
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#define ELF_EXEC_PAGESIZE 4096
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#define ELF_CLASS ELFCLASS32
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#define ELF_PLAT_INIT(_r, load_addr) { _r->a0 = 0; }
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#ifdef __cskyBE__
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#define ELF_DATA ELFDATA2MSB
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#else
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#define ELF_DATA ELFDATA2LSB
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#endif
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/*
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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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*/
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#define ELF_ET_DYN_BASE 0x0UL
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#include <abi/elf.h>
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/* Similar, but for a thread other than current. */
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struct task_struct;
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extern int dump_task_regs(struct task_struct *tsk, elf_gregset_t *elf_regs);
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#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
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#define ELF_HWCAP (0)
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/*
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* This yields a string that ld.so will use to load implementation specific
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* libraries for optimization. This is more specific in intent than poking
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* at uname or /proc/cpuinfo.
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*/
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#define ELF_PLATFORM (NULL)
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#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
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#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
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struct linux_binprm;
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extern int arch_setup_additional_pages(struct linux_binprm *bprm,
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int uses_interp);
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#endif /* __ASM_CSKY_ELF_H */
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