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/* SPDX-License-Identifier: GPL-2.0 */
/*
* S390 version
*
* Derived from "include/asm-i386/elf.h"
*/
#ifndef __ASMS390_ELF_H
#define __ASMS390_ELF_H
/* s390 relocations defined by the ABIs */
#define R_390_NONE 0 /* No reloc. */
#define R_390_8 1 /* Direct 8 bit. */
#define R_390_12 2 /* Direct 12 bit. */
#define R_390_16 3 /* Direct 16 bit. */
#define R_390_32 4 /* Direct 32 bit. */
#define R_390_PC32 5 /* PC relative 32 bit. */
#define R_390_GOT12 6 /* 12 bit GOT offset. */
#define R_390_GOT32 7 /* 32 bit GOT offset. */
#define R_390_PLT32 8 /* 32 bit PC relative PLT address. */
#define R_390_COPY 9 /* Copy symbol at runtime. */
#define R_390_GLOB_DAT 10 /* Create GOT entry. */
#define R_390_JMP_SLOT 11 /* Create PLT entry. */
#define R_390_RELATIVE 12 /* Adjust by program base. */
#define R_390_GOTOFF32 13 /* 32 bit offset to GOT. */
#define R_390_GOTPC 14 /* 32 bit PC rel. offset to GOT. */
#define R_390_GOT16 15 /* 16 bit GOT offset. */
#define R_390_PC16 16 /* PC relative 16 bit. */
#define R_390_PC16DBL 17 /* PC relative 16 bit shifted by 1. */
#define R_390_PLT16DBL 18 /* 16 bit PC rel. PLT shifted by 1. */
#define R_390_PC32DBL 19 /* PC relative 32 bit shifted by 1. */
#define R_390_PLT32DBL 20 /* 32 bit PC rel. PLT shifted by 1. */
#define R_390_GOTPCDBL 21 /* 32 bit PC rel. GOT shifted by 1. */
#define R_390_64 22 /* Direct 64 bit. */
#define R_390_PC64 23 /* PC relative 64 bit. */
#define R_390_GOT64 24 /* 64 bit GOT offset. */
#define R_390_PLT64 25 /* 64 bit PC relative PLT address. */
#define R_390_GOTENT 26 /* 32 bit PC rel. to GOT entry >> 1. */
#define R_390_GOTOFF16 27 /* 16 bit offset to GOT. */
#define R_390_GOTOFF64 28 /* 64 bit offset to GOT. */
#define R_390_GOTPLT12 29 /* 12 bit offset to jump slot. */
#define R_390_GOTPLT16 30 /* 16 bit offset to jump slot. */
#define R_390_GOTPLT32 31 /* 32 bit offset to jump slot. */
#define R_390_GOTPLT64 32 /* 64 bit offset to jump slot. */
#define R_390_GOTPLTENT 33 /* 32 bit rel. offset to jump slot. */
#define R_390_PLTOFF16 34 /* 16 bit offset from GOT to PLT. */
#define R_390_PLTOFF32 35 /* 32 bit offset from GOT to PLT. */
#define R_390_PLTOFF64 36 /* 16 bit offset from GOT to PLT. */
#define R_390_TLS_LOAD 37 /* Tag for load insn in TLS code. */
#define R_390_TLS_GDCALL 38 /* Tag for function call in general
dynamic TLS code. */
#define R_390_TLS_LDCALL 39 /* Tag for function call in local
dynamic TLS code. */
#define R_390_TLS_GD32 40 /* Direct 32 bit for general dynamic
thread local data. */
#define R_390_TLS_GD64 41 /* Direct 64 bit for general dynamic
thread local data. */
#define R_390_TLS_GOTIE12 42 /* 12 bit GOT offset for static TLS
block offset. */
#define R_390_TLS_GOTIE32 43 /* 32 bit GOT offset for static TLS
block offset. */
#define R_390_TLS_GOTIE64 44 /* 64 bit GOT offset for static TLS
block offset. */
#define R_390_TLS_LDM32 45 /* Direct 32 bit for local dynamic
thread local data in LD code. */
#define R_390_TLS_LDM64 46 /* Direct 64 bit for local dynamic
thread local data in LD code. */
#define R_390_TLS_IE32 47 /* 32 bit address of GOT entry for
negated static TLS block offset. */
#define R_390_TLS_IE64 48 /* 64 bit address of GOT entry for
negated static TLS block offset. */
#define R_390_TLS_IEENT 49 /* 32 bit rel. offset to GOT entry for
negated static TLS block offset. */
#define R_390_TLS_LE32 50 /* 32 bit negated offset relative to
static TLS block. */
#define R_390_TLS_LE64 51 /* 64 bit negated offset relative to
static TLS block. */
#define R_390_TLS_LDO32 52 /* 32 bit offset relative to TLS
block. */
#define R_390_TLS_LDO64 53 /* 64 bit offset relative to TLS
block. */
#define R_390_TLS_DTPMOD 54 /* ID of module containing symbol. */
#define R_390_TLS_DTPOFF 55 /* Offset in TLS block. */
#define R_390_TLS_TPOFF 56 /* Negate offset in static TLS
block. */
#define R_390_20 57 /* Direct 20 bit. */
#define R_390_GOT20 58 /* 20 bit GOT offset. */
#define R_390_GOTPLT20 59 /* 20 bit offset to jump slot. */
#define R_390_TLS_GOTIE20 60 /* 20 bit GOT offset for static TLS
block offset. */
/* Keep this the last entry. */
#define R_390_NUM 61
/* Bits present in AT_HWCAP. */
#define HWCAP_S390_ESAN3 1
#define HWCAP_S390_ZARCH 2
#define HWCAP_S390_STFLE 4
#define HWCAP_S390_MSA 8
#define HWCAP_S390_LDISP 16
#define HWCAP_S390_EIMM 32
#define HWCAP_S390_DFP 64
#define HWCAP_S390_HPAGE 128
#define HWCAP_S390_ETF3EH 256
#define HWCAP_S390_HIGH_GPRS 512
#define HWCAP_S390_TE 1024
#define HWCAP_S390_VXRS 2048
#define HWCAP_S390_VXRS_BCD 4096
#define HWCAP_S390_VXRS_EXT 8192
#define HWCAP_S390_GS 16384
/* Internal bits, not exposed via elf */
#define HWCAP_INT_SIE 1UL
/*
* These are used to set parameters in the core dumps.
*/
#define ELF_CLASS ELFCLASS64
#define ELF_DATA ELFDATA2MSB
#define ELF_ARCH EM_S390
/* s390 specific phdr types */
#define PT_S390_PGSTE 0x70000000
/*
* ELF register definitions..
*/
#include <asm/ptrace.h>
#include <asm/compat.h>
#include <asm/syscall.h>
#include <asm/user.h>
typedef s390_fp_regs elf_fpregset_t;
typedef s390_regs elf_gregset_t;
typedef s390_fp_regs compat_elf_fpregset_t;
typedef s390_compat_regs compat_elf_gregset_t;
#include <linux/compat.h>
#include <linux/sched/mm.h> /* for task_struct */
#include <asm/mmu_context.h>
#include <asm/vdso.h>
extern unsigned int vdso_enabled;
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) \
(((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
&& (x)->e_ident[EI_CLASS] == ELF_CLASS)
#define compat_elf_check_arch(x) \
(((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
&& (x)->e_ident[EI_CLASS] == ELF_CLASS)
#define compat_start_thread start_thread31
struct arch_elf_state {
int rc;
};
#define INIT_ARCH_ELF_STATE { .rc = 0 }
#define arch_check_elf(ehdr, interp, interp_ehdr, state) (0)
#ifdef CONFIG_PGSTE
#define arch_elf_pt_proc(ehdr, phdr, elf, interp, state) \
({ \
struct arch_elf_state *_state = state; \
if ((phdr)->p_type == PT_S390_PGSTE && \
!page_table_allocate_pgste && \
!test_thread_flag(TIF_PGSTE) && \
!current->mm->context.alloc_pgste) { \
set_thread_flag(TIF_PGSTE); \
set_pt_regs_flag(task_pt_regs(current), \
PIF_SYSCALL_RESTART); \
_state->rc = -EAGAIN; \
} \
_state->rc; \
})
#else
#define arch_elf_pt_proc(ehdr, phdr, elf, interp, state) \
({ \
(state)->rc; \
})
#endif
/* For SVR4/S390 the function pointer to be registered with `atexit` is
passed in R14. */
#define ELF_PLAT_INIT(_r, load_addr) \
do { \
_r->gprs[14] = 0; \
} while (0)
#define CORE_DUMP_USE_REGSET
#define ELF_EXEC_PAGESIZE PAGE_SIZE
/*
* This is the base location for PIE (ET_DYN with INTERP) loads. On
* 64-bit, this is raised to 4GB to leave the entire 32-bit address
* space open for things that want to use the area for 32-bit pointers.
*/
#define ELF_ET_DYN_BASE (is_compat_task() ? 0x000400000UL : \
0x100000000UL)
/* This yields a mask that user programs can use to figure out what
instruction set this CPU supports. */
extern unsigned long elf_hwcap;
#define ELF_HWCAP (elf_hwcap)
/* Internal hardware capabilities, not exposed via elf */
extern unsigned long int_hwcap;
/* 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.
For the moment, we have only optimizations for the Intel generations,
but that could change... */
#define ELF_PLATFORM_SIZE 8
extern char elf_platform[];
#define ELF_PLATFORM (elf_platform)
#ifndef CONFIG_COMPAT
#define SET_PERSONALITY(ex) \
do { \
set_personality(PER_LINUX | \
(current->personality & (~PER_MASK))); \
current->thread.sys_call_table = \
(unsigned long) &sys_call_table; \
} while (0)
#else /* CONFIG_COMPAT */
#define SET_PERSONALITY(ex) \
do { \
if (personality(current->personality) != PER_LINUX32) \
set_personality(PER_LINUX | \
(current->personality & ~PER_MASK)); \
if ((ex).e_ident[EI_CLASS] == ELFCLASS32) { \
set_thread_flag(TIF_31BIT); \
current->thread.sys_call_table = \
(unsigned long) &sys_call_table_emu; \
} else { \
clear_thread_flag(TIF_31BIT); \
current->thread.sys_call_table = \
(unsigned long) &sys_call_table; \
} \
} while (0)
#endif /* CONFIG_COMPAT */
/*
* Cache aliasing on the latest machines calls for a mapping granularity
* of 512KB. For 64-bit processes use a 512KB alignment and a randomization
* of up to 1GB. For 31-bit processes the virtual address space is limited,
* use no alignment and limit the randomization to 8MB.
*/
#define BRK_RND_MASK (is_compat_task() ? 0x7ffUL : 0x3ffffUL)
#define MMAP_RND_MASK (is_compat_task() ? 0x7ffUL : 0x3ff80UL)
#define MMAP_ALIGN_MASK (is_compat_task() ? 0 : 0x7fUL)
#define STACK_RND_MASK MMAP_RND_MASK
/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
#define ARCH_DLINFO \
do { \
if (vdso_enabled) \
NEW_AUX_ENT(AT_SYSINFO_EHDR, \
(unsigned long)current->mm->context.vdso_base); \
} while (0)
struct linux_binprm;
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
int arch_setup_additional_pages(struct linux_binprm *, int);
#endif
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