diff options
Diffstat (limited to 'arch/s390/include/asm/elf.h')
| -rw-r--r-- | arch/s390/include/asm/elf.h | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h new file mode 100644 index 0000000000..70a30ae258 --- /dev/null +++ b/arch/s390/include/asm/elf.h @@ -0,0 +1,302 @@ +/* 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 + +enum { + HWCAP_NR_ESAN3 = 0, + HWCAP_NR_ZARCH = 1, + HWCAP_NR_STFLE = 2, + HWCAP_NR_MSA = 3, + HWCAP_NR_LDISP = 4, + HWCAP_NR_EIMM = 5, + HWCAP_NR_DFP = 6, + HWCAP_NR_HPAGE = 7, + HWCAP_NR_ETF3EH = 8, + HWCAP_NR_HIGH_GPRS = 9, + HWCAP_NR_TE = 10, + HWCAP_NR_VXRS = 11, + HWCAP_NR_VXRS_BCD = 12, + HWCAP_NR_VXRS_EXT = 13, + HWCAP_NR_GS = 14, + HWCAP_NR_VXRS_EXT2 = 15, + HWCAP_NR_VXRS_PDE = 16, + HWCAP_NR_SORT = 17, + HWCAP_NR_DFLT = 18, + HWCAP_NR_VXRS_PDE2 = 19, + HWCAP_NR_NNPA = 20, + HWCAP_NR_PCI_MIO = 21, + HWCAP_NR_SIE = 22, + HWCAP_NR_MAX +}; + +/* Bits present in AT_HWCAP. */ +#define HWCAP_ESAN3 BIT(HWCAP_NR_ESAN3) +#define HWCAP_ZARCH BIT(HWCAP_NR_ZARCH) +#define HWCAP_STFLE BIT(HWCAP_NR_STFLE) +#define HWCAP_MSA BIT(HWCAP_NR_MSA) +#define HWCAP_LDISP BIT(HWCAP_NR_LDISP) +#define HWCAP_EIMM BIT(HWCAP_NR_EIMM) +#define HWCAP_DFP BIT(HWCAP_NR_DFP) +#define HWCAP_HPAGE BIT(HWCAP_NR_HPAGE) +#define HWCAP_ETF3EH BIT(HWCAP_NR_ETF3EH) +#define HWCAP_HIGH_GPRS BIT(HWCAP_NR_HIGH_GPRS) +#define HWCAP_TE BIT(HWCAP_NR_TE) +#define HWCAP_VXRS BIT(HWCAP_NR_VXRS) +#define HWCAP_VXRS_BCD BIT(HWCAP_NR_VXRS_BCD) +#define HWCAP_VXRS_EXT BIT(HWCAP_NR_VXRS_EXT) +#define HWCAP_GS BIT(HWCAP_NR_GS) +#define HWCAP_VXRS_EXT2 BIT(HWCAP_NR_VXRS_EXT2) +#define HWCAP_VXRS_PDE BIT(HWCAP_NR_VXRS_PDE) +#define HWCAP_SORT BIT(HWCAP_NR_SORT) +#define HWCAP_DFLT BIT(HWCAP_NR_DFLT) +#define HWCAP_VXRS_PDE2 BIT(HWCAP_NR_VXRS_PDE2) +#define HWCAP_NNPA BIT(HWCAP_NR_NNPA) +#define HWCAP_PCI_MIO BIT(HWCAP_NR_PCI_MIO) +#define HWCAP_SIE BIT(HWCAP_NR_SIE) + +/* + * 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 <linux/compat.h> + +#include <asm/ptrace.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/sched/mm.h> /* for task_struct */ +#include <asm/mmu_context.h> + +/* + * 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_EXECVE_PGSTE_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 location that an ET_DYN program is loaded if exec'ed. Typical + use of this is to invoke "./ld.so someprog" to test out a new version of + the loader. We need to make sure that it is out of the way of the program + that it will "exec", and that there is sufficient room for the brk. 64-bit + tasks are aligned to 4GB. */ +#define ELF_ET_DYN_BASE (is_compat_task() ? \ + (STACK_TOP / 3 * 2) : \ + (STACK_TOP / 3 * 2) & ~((1UL << 32) - 1)) + +/* 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) + +/* 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 = 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 = \ + sys_call_table_emu; \ + } else { \ + clear_thread_flag(TIF_31BIT); \ + current->thread.sys_call_table = \ + sys_call_table; \ + } \ +} while (0) +#endif /* CONFIG_COMPAT */ + +/* + * Cache aliasing on the latest machines calls for a mapping granularity + * of 512KB for the anonymous mapping base. 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. + * For the additional randomization of the program break use 32MB for + * 64-bit and 8MB for 31-bit. + */ +#define BRK_RND_MASK (is_compat_task() ? 0x7ffUL : 0x1fffUL) +#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 { \ + 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 |