281 lines
10 KiB
C
281 lines
10 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* S390 version
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*
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* Derived from "include/asm-i386/elf.h"
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*/
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#ifndef __ASMS390_ELF_H
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#define __ASMS390_ELF_H
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/* s390 relocations defined by the ABIs */
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#define R_390_NONE 0 /* No reloc. */
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#define R_390_8 1 /* Direct 8 bit. */
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#define R_390_12 2 /* Direct 12 bit. */
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#define R_390_16 3 /* Direct 16 bit. */
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#define R_390_32 4 /* Direct 32 bit. */
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#define R_390_PC32 5 /* PC relative 32 bit. */
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#define R_390_GOT12 6 /* 12 bit GOT offset. */
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#define R_390_GOT32 7 /* 32 bit GOT offset. */
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#define R_390_PLT32 8 /* 32 bit PC relative PLT address. */
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#define R_390_COPY 9 /* Copy symbol at runtime. */
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#define R_390_GLOB_DAT 10 /* Create GOT entry. */
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#define R_390_JMP_SLOT 11 /* Create PLT entry. */
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#define R_390_RELATIVE 12 /* Adjust by program base. */
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#define R_390_GOTOFF32 13 /* 32 bit offset to GOT. */
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#define R_390_GOTPC 14 /* 32 bit PC rel. offset to GOT. */
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#define R_390_GOT16 15 /* 16 bit GOT offset. */
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#define R_390_PC16 16 /* PC relative 16 bit. */
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#define R_390_PC16DBL 17 /* PC relative 16 bit shifted by 1. */
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#define R_390_PLT16DBL 18 /* 16 bit PC rel. PLT shifted by 1. */
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#define R_390_PC32DBL 19 /* PC relative 32 bit shifted by 1. */
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#define R_390_PLT32DBL 20 /* 32 bit PC rel. PLT shifted by 1. */
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#define R_390_GOTPCDBL 21 /* 32 bit PC rel. GOT shifted by 1. */
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#define R_390_64 22 /* Direct 64 bit. */
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#define R_390_PC64 23 /* PC relative 64 bit. */
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#define R_390_GOT64 24 /* 64 bit GOT offset. */
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#define R_390_PLT64 25 /* 64 bit PC relative PLT address. */
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#define R_390_GOTENT 26 /* 32 bit PC rel. to GOT entry >> 1. */
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#define R_390_GOTOFF16 27 /* 16 bit offset to GOT. */
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#define R_390_GOTOFF64 28 /* 64 bit offset to GOT. */
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#define R_390_GOTPLT12 29 /* 12 bit offset to jump slot. */
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#define R_390_GOTPLT16 30 /* 16 bit offset to jump slot. */
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#define R_390_GOTPLT32 31 /* 32 bit offset to jump slot. */
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#define R_390_GOTPLT64 32 /* 64 bit offset to jump slot. */
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#define R_390_GOTPLTENT 33 /* 32 bit rel. offset to jump slot. */
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#define R_390_PLTOFF16 34 /* 16 bit offset from GOT to PLT. */
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#define R_390_PLTOFF32 35 /* 32 bit offset from GOT to PLT. */
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#define R_390_PLTOFF64 36 /* 16 bit offset from GOT to PLT. */
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#define R_390_TLS_LOAD 37 /* Tag for load insn in TLS code. */
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#define R_390_TLS_GDCALL 38 /* Tag for function call in general
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dynamic TLS code. */
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#define R_390_TLS_LDCALL 39 /* Tag for function call in local
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dynamic TLS code. */
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#define R_390_TLS_GD32 40 /* Direct 32 bit for general dynamic
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thread local data. */
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#define R_390_TLS_GD64 41 /* Direct 64 bit for general dynamic
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thread local data. */
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#define R_390_TLS_GOTIE12 42 /* 12 bit GOT offset for static TLS
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block offset. */
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#define R_390_TLS_GOTIE32 43 /* 32 bit GOT offset for static TLS
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block offset. */
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#define R_390_TLS_GOTIE64 44 /* 64 bit GOT offset for static TLS
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block offset. */
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#define R_390_TLS_LDM32 45 /* Direct 32 bit for local dynamic
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thread local data in LD code. */
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#define R_390_TLS_LDM64 46 /* Direct 64 bit for local dynamic
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thread local data in LD code. */
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#define R_390_TLS_IE32 47 /* 32 bit address of GOT entry for
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negated static TLS block offset. */
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#define R_390_TLS_IE64 48 /* 64 bit address of GOT entry for
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negated static TLS block offset. */
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#define R_390_TLS_IEENT 49 /* 32 bit rel. offset to GOT entry for
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negated static TLS block offset. */
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#define R_390_TLS_LE32 50 /* 32 bit negated offset relative to
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static TLS block. */
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#define R_390_TLS_LE64 51 /* 64 bit negated offset relative to
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static TLS block. */
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#define R_390_TLS_LDO32 52 /* 32 bit offset relative to TLS
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block. */
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#define R_390_TLS_LDO64 53 /* 64 bit offset relative to TLS
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block. */
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#define R_390_TLS_DTPMOD 54 /* ID of module containing symbol. */
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#define R_390_TLS_DTPOFF 55 /* Offset in TLS block. */
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#define R_390_TLS_TPOFF 56 /* Negate offset in static TLS
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block. */
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#define R_390_20 57 /* Direct 20 bit. */
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#define R_390_GOT20 58 /* 20 bit GOT offset. */
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#define R_390_GOTPLT20 59 /* 20 bit offset to jump slot. */
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#define R_390_TLS_GOTIE20 60 /* 20 bit GOT offset for static TLS
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block offset. */
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/* Keep this the last entry. */
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#define R_390_NUM 61
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/* Bits present in AT_HWCAP. */
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#define HWCAP_S390_ESAN3 1
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#define HWCAP_S390_ZARCH 2
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#define HWCAP_S390_STFLE 4
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#define HWCAP_S390_MSA 8
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#define HWCAP_S390_LDISP 16
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#define HWCAP_S390_EIMM 32
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#define HWCAP_S390_DFP 64
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#define HWCAP_S390_HPAGE 128
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#define HWCAP_S390_ETF3EH 256
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#define HWCAP_S390_HIGH_GPRS 512
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#define HWCAP_S390_TE 1024
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#define HWCAP_S390_VXRS 2048
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#define HWCAP_S390_VXRS_BCD 4096
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#define HWCAP_S390_VXRS_EXT 8192
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#define HWCAP_S390_GS 16384
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/* Internal bits, not exposed via elf */
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#define HWCAP_INT_SIE 1UL
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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 ELFDATA2MSB
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#define ELF_ARCH EM_S390
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/* s390 specific phdr types */
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#define PT_S390_PGSTE 0x70000000
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/*
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* ELF register definitions..
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*/
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#include <linux/compat.h>
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#include <asm/ptrace.h>
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#include <asm/syscall.h>
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#include <asm/user.h>
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typedef s390_fp_regs elf_fpregset_t;
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typedef s390_regs elf_gregset_t;
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typedef s390_fp_regs compat_elf_fpregset_t;
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typedef s390_compat_regs compat_elf_gregset_t;
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#include <linux/sched/mm.h> /* for task_struct */
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#include <asm/mmu_context.h>
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#include <asm/vdso.h>
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extern unsigned int vdso_enabled;
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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) \
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(((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
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&& (x)->e_ident[EI_CLASS] == ELF_CLASS)
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#define compat_elf_check_arch(x) \
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(((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
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&& (x)->e_ident[EI_CLASS] == ELF_CLASS)
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#define compat_start_thread start_thread31
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struct arch_elf_state {
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int rc;
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};
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#define INIT_ARCH_ELF_STATE { .rc = 0 }
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#define arch_check_elf(ehdr, interp, interp_ehdr, state) (0)
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#ifdef CONFIG_PGSTE
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#define arch_elf_pt_proc(ehdr, phdr, elf, interp, state) \
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({ \
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struct arch_elf_state *_state = state; \
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if ((phdr)->p_type == PT_S390_PGSTE && \
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!page_table_allocate_pgste && \
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!test_thread_flag(TIF_PGSTE) && \
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!current->mm->context.alloc_pgste) { \
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set_thread_flag(TIF_PGSTE); \
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set_pt_regs_flag(task_pt_regs(current), \
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PIF_SYSCALL_RESTART); \
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_state->rc = -EAGAIN; \
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} \
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_state->rc; \
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})
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#else
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#define arch_elf_pt_proc(ehdr, phdr, elf, interp, state) \
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({ \
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(state)->rc; \
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})
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#endif
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/* For SVR4/S390 the function pointer to be registered with `atexit` is
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passed in R14. */
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#define ELF_PLAT_INIT(_r, load_addr) \
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do { \
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_r->gprs[14] = 0; \
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} while (0)
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#define CORE_DUMP_USE_REGSET
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#define ELF_EXEC_PAGESIZE PAGE_SIZE
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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. 64-bit
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tasks are aligned to 4GB. */
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#define ELF_ET_DYN_BASE (is_compat_task() ? \
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(STACK_TOP / 3 * 2) : \
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(STACK_TOP / 3 * 2) & ~((1UL << 32) - 1))
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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. */
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extern unsigned long elf_hwcap;
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#define ELF_HWCAP (elf_hwcap)
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/* Internal hardware capabilities, not exposed via elf */
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extern unsigned long int_hwcap;
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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_SIZE 8
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extern char elf_platform[];
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#define ELF_PLATFORM (elf_platform)
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#ifndef CONFIG_COMPAT
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#define SET_PERSONALITY(ex) \
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do { \
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set_personality(PER_LINUX | \
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(current->personality & (~PER_MASK))); \
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current->thread.sys_call_table = \
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(unsigned long) &sys_call_table; \
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} while (0)
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#else /* CONFIG_COMPAT */
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#define SET_PERSONALITY(ex) \
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do { \
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if (personality(current->personality) != PER_LINUX32) \
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set_personality(PER_LINUX | \
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(current->personality & ~PER_MASK)); \
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if ((ex).e_ident[EI_CLASS] == ELFCLASS32) { \
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set_thread_flag(TIF_31BIT); \
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current->thread.sys_call_table = \
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(unsigned long) &sys_call_table_emu; \
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} else { \
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clear_thread_flag(TIF_31BIT); \
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current->thread.sys_call_table = \
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(unsigned long) &sys_call_table; \
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} \
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} while (0)
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#endif /* CONFIG_COMPAT */
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/*
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* Cache aliasing on the latest machines calls for a mapping granularity
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* of 512KB for the anonymous mapping base. For 64-bit processes use a
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* 512KB alignment and a randomization of up to 1GB. For 31-bit processes
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* the virtual address space is limited, use no alignment and limit the
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* randomization to 8MB.
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* For the additional randomization of the program break use 32MB for
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* 64-bit and 8MB for 31-bit.
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*/
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#define BRK_RND_MASK (is_compat_task() ? 0x7ffUL : 0x1fffUL)
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#define MMAP_RND_MASK (is_compat_task() ? 0x7ffUL : 0x3ff80UL)
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#define MMAP_ALIGN_MASK (is_compat_task() ? 0 : 0x7fUL)
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#define STACK_RND_MASK MMAP_RND_MASK
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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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if (vdso_enabled) \
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NEW_AUX_ENT(AT_SYSINFO_EHDR, \
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(unsigned long)current->mm->context.vdso_base); \
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} while (0)
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struct linux_binprm;
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#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
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int arch_setup_additional_pages(struct linux_binprm *, int);
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#endif
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