171 lines
5.1 KiB
C
171 lines
5.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_SW64_ELF_H
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#define _ASM_SW64_ELF_H
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#ifdef __KERNEL__
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#include <asm/auxvec.h>
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#include <asm/special_insns.h>
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#endif
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/* Special values for the st_other field in the symbol table. */
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#define STO_SW64_NOPV 0x80
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#define STO_SW64_STD_GPLOAD 0x88
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/*
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* SW-64 ELF relocation types
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*/
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#define R_SW64_NONE 0 /* No reloc */
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#define R_SW64_REFLONG 1 /* Direct 32 bit */
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#define R_SW64_REFQUAD 2 /* Direct 64 bit */
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#define R_SW64_GPREL32 3 /* GP relative 32 bit */
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#define R_SW64_LITERAL 4 /* GP relative 16 bit w/optimization */
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#define R_SW64_LITUSE 5 /* Optimization hint for LITERAL */
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#define R_SW64_GPDISP 6 /* Add displacement to GP */
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#define R_SW64_BRADDR 7 /* PC+4 relative 23 bit shifted */
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#define R_SW64_HINT 8 /* PC+4 relative 16 bit shifted */
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#define R_SW64_SREL16 9 /* PC relative 16 bit */
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#define R_SW64_SREL32 10 /* PC relative 32 bit */
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#define R_SW64_SREL64 11 /* PC relative 64 bit */
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#define R_SW64_GPRELHIGH 17 /* GP relative 32 bit, high 16 bits */
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#define R_SW64_GPRELLOW 18 /* GP relative 32 bit, low 16 bits */
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#define R_SW64_GPREL16 19 /* GP relative 16 bit */
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#define R_SW64_COPY 24 /* Copy symbol at runtime */
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#define R_SW64_GLOB_DAT 25 /* Create GOT entry */
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#define R_SW64_JMP_SLOT 26 /* Create PLT entry */
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#define R_SW64_RELATIVE 27 /* Adjust by program base */
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#define R_SW64_BRSGP 28
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#define R_SW64_TLSGD 29
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#define R_SW64_TLS_LDM 30
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#define R_SW64_DTPMOD64 31
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#define R_SW64_GOTDTPREL 32
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#define R_SW64_DTPREL64 33
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#define R_SW64_DTPRELHI 34
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#define R_SW64_DTPRELLO 35
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#define R_SW64_DTPREL16 36
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#define R_SW64_GOTTPREL 37
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#define R_SW64_TPREL64 38
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#define R_SW64_TPRELHI 39
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#define R_SW64_TPRELLO 40
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#define R_SW64_TPREL16 41
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#define R_SW64_LITERAL_GOT 43 /* GP relative */
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#define SHF_SW64_GPREL 0x10000000
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/* Legal values for e_flags field of Elf64_Ehdr. */
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#define EF_SW64_32BIT 1 /* All addresses are below 2GB */
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/*
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* ELF register definitions..
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*/
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/*
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* The legacy version of <sys/procfs.h> makes gregset_t 46 entries long.
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* I have no idea why that is so. For now, we just leave it at 33
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* (32 general regs + processor status word).
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*/
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#define ELF_NGREG 33
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#define ELF_NFPREG 32
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typedef unsigned long elf_greg_t;
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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typedef double elf_fpreg_t;
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typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
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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_SW64)
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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 ELFCLASS64
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#define ELF_DATA ELFDATA2LSB
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#define ELF_ARCH EM_SW64
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#define ELF_EXEC_PAGESIZE 8192
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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 (TASK_UNMAPPED_BASE + 0x1000000)
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/*
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* $0 is set by ld.so to a pointer to a function which might be
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* registered using atexit. This provides a mean for the dynamic
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* linker to call DT_FINI functions for shared libraries that have
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* been loaded before the code runs.
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* So that we can use the same startup file with static executables,
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* we start programs with a value of 0 to indicate that there is no
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* such function.
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*/
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#define ELF_PLAT_INIT(_r, load_addr) (_r->r0 = 0)
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/*
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* The registers are laid out in pt_regs for HMCODE and syscall
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* convenience. Re-order them for the linear elf_gregset_t.
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*/
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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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#ifdef __KERNEL__
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struct pt_regs;
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struct thread_info;
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struct task_struct;
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extern void dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt,
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struct thread_info *ti);
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#define ELF_CORE_COPY_REGS(DEST, REGS) \
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dump_elf_thread(DEST, REGS, current_thread_info());
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/* Similar, but for a thread other than current. */
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extern int dump_elf_task(elf_greg_t *dest, struct task_struct *task);
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#define ELF_CORE_COPY_TASK_REGS(TASK, DEST) dump_elf_task(*(DEST), TASK)
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/* Similar, but for the FP registers. */
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extern int dump_elf_task_fp(elf_fpreg_t *dest, struct task_struct *task);
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#define ELF_CORE_COPY_FPREGS(TASK, DEST) dump_elf_task_fp(*(DEST), TASK)
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/*
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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 is trivial on SW-64,
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* but not so on other machines.
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*/
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#define ELF_HWCAP (~amask(-1))
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/*
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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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*/
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#define ELF_PLATFORM ("sw_64")
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/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
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#define ARCH_DLINFO \
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do { \
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NEW_AUX_ENT(AT_SYSINFO_EHDR, \
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(elf_addr_t)current->mm->context.vdso); \
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} while (0)
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struct mm_struct;
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extern unsigned long arch_randomize_brk(struct mm_struct *mm);
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#define arch_randomize_brk arch_randomize_brk
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#endif
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#endif /* _ASM_SW64_ELF_H */
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