diff options
Diffstat (limited to 'target/linux/ubicom32/files/arch/ubicom32/include/asm/elf.h')
| -rw-r--r-- | target/linux/ubicom32/files/arch/ubicom32/include/asm/elf.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/target/linux/ubicom32/files/arch/ubicom32/include/asm/elf.h b/target/linux/ubicom32/files/arch/ubicom32/include/asm/elf.h new file mode 100644 index 000000000..3abc202ac --- /dev/null +++ b/target/linux/ubicom32/files/arch/ubicom32/include/asm/elf.h @@ -0,0 +1,173 @@ +/* + * arch/ubicom32/include/asm/elf.h + * Definitions for elf executable format for Ubicom32 architecture. + * + * (C) Copyright 2009, Ubicom, Inc. + * + * This file is part of the Ubicom32 Linux Kernel Port. + * + * The Ubicom32 Linux Kernel Port is free software: you can redistribute + * it and/or modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, either version 2 of the + * License, or (at your option) any later version. + * + * The Ubicom32 Linux Kernel Port is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with the Ubicom32 Linux Kernel Port. If not, + * see <http://www.gnu.org/licenses/>. + * + * Ubicom32 implementation derived from (with many thanks): + * arch/m68knommu + * arch/blackfin + * arch/parisc + */ +#ifndef _ASM_UBICOM32_ELF_H +#define _ASM_UBICOM32_ELF_H + +/* + * ELF register definitions.. + */ + +#include <asm/ptrace.h> +#include <asm/user.h> + +/* + * Processor specific flags for the ELF header e_flags field. + */ +#define EF_UBICOM32_V3 0x00000001 /* -fmarch=ubicom32v3 */ +#define EF_UBICOM32_V4 0x00000002 /* -fmarch=ubicom32v4 */ +#define EF_UBICOM32_PIC 0x80000000 /* -fpic */ +#define EF_UBICOM32_FDPIC 0x40000000 /* -mfdpic */ + +/* + * Ubicom32 ELF relocation types + */ +#define R_UBICOM32_NONE 0 +#define R_UBICOM32_16 1 +#define R_UBICOM32_32 2 +#define R_UBICOM32_LO16 3 +#define R_UBICOM32_HI16 4 +#define R_UBICOM32_21_PCREL 5 +#define R_UBICOM32_24_PCREL 6 +#define R_UBICOM32_HI24 7 +#define R_UBICOM32_LO7_S 8 +#define R_UBICOM32_LO7_2_S 9 +#define R_UBICOM32_LO7_4_S 10 +#define R_UBICOM32_LO7_D 11 +#define R_UBICOM32_LO7_2_D 12 +#define R_UBICOM32_LO7_4_D 13 +#define R_UBICOM32_32_HARVARD 14 +#define R_UBICOM32_LO7_CALLI 15 +#define R_UBICOM32_LO16_CALLI 16 +#define R_UBICOM32_GOT_HI24 17 +#define R_UBICOM32_GOT_LO7_S 18 +#define R_UBICOM32_GOT_LO7_2_S 19 +#define R_UBICOM32_GOT_LO7_4_S 20 +#define R_UBICOM32_GOT_LO7_D 21 +#define R_UBICOM32_GOT_LO7_2_D 22 +#define R_UBICOM32_GOT_LO7_4_D 23 +#define R_UBICOM32_FUNCDESC_GOT_HI24 24 +#define R_UBICOM32_FUNCDESC_GOT_LO7_S 25 +#define R_UBICOM32_FUNCDESC_GOT_LO7_2_S 26 +#define R_UBICOM32_FUNCDESC_GOT_LO7_4_S 27 +#define R_UBICOM32_FUNCDESC_GOT_LO7_D 28 +#define R_UBICOM32_FUNCDESC_GOT_LO7_2_D 29 +#define R_UBICOM32_FUNCDESC_GOT_LO7_4_D 30 +#define R_UBICOM32_GOT_LO7_CALLI 31 +#define R_UBICOM32_FUNCDESC_GOT_LO7_CALLI 32 +#define R_UBICOM32_FUNCDESC_VALUE 33 +#define R_UBICOM32_FUNCDESC 34 +#define R_UBICOM32_GOTOFFSET_LO 35 +#define R_UBICOM32_GOTOFFSET_HI 36 +#define R_UBICOM32_FUNCDESC_GOTOFFSET_LO 37 +#define R_UBICOM32_FUNCDESC_GOTOFFSET_HI 38 +#define R_UBICOM32_GNU_VTINHERIT 200 +#define R_UBICOM32_GNU_VTENTRY 201 + +typedef unsigned long elf_greg_t; + +#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t)) +typedef elf_greg_t elf_gregset_t[ELF_NGREG]; + +typedef struct user_ubicom32fp_struct elf_fpregset_t; + +/* + * This is used to ensure we don't load something for the wrong architecture. + */ +#define elf_check_arch(x) ((x)->e_machine == EM_UBICOM32) + +#define elf_check_fdpic(x) ((x)->e_flags & EF_UBICOM32_FDPIC) + +#define elf_check_const_displacement(x) ((x)->e_flags & EF_UBICOM32_PIC) + +/* + * These are used to set parameters in the core dumps. + */ +#define ELF_CLASS ELFCLASS32 +#define ELF_DATA ELFDATA2MSB +#define ELF_ARCH EM_UBICOM32 + +/* For SVR4/m68k the function pointer to be registered with `atexit' is + passed in %a1. Although my copy of the ABI has no such statement, it + is actually used on ASV. */ +#define ELF_PLAT_INIT(_r, load_addr) _r->a1 = 0 + +#define ELF_FDPIC_PLAT_INIT(_regs, _exec_map_addr, _interp_map_addr, \ + _dynamic_addr) \ + do { \ + _regs->dn[1] = _exec_map_addr; \ + _regs->dn[2] = _interp_map_addr; \ + _regs->dn[3] = _dynamic_addr; \ + _regs->an[1] = 0; /* dl_fini will be set by ldso */ \ + } while (0) + +#define USE_ELF_CORE_DUMP +#define ELF_EXEC_PAGESIZE 4096 + +#ifdef __KERNEL__ +#ifdef CONFIG_UBICOM32_V4 +#define ELF_FDPIC_CORE_EFLAGS (EF_UBICOM32_FDPIC | EF_UBICOM32_V4) +#elif defined CONFIG_UBICOM32_V3 +#define ELF_FDPIC_CORE_EFLAGS (EF_UBICOM32_FDPIC | EF_UBICOM32_V3) +#else +#error Unknown/Unsupported ubicom32 architecture. +#endif +#endif + +/* 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. */ + +#define ELF_ET_DYN_BASE 0xD0000000UL + +/* + * For Ubicom32, the elf_gregset_t and struct pt_regs are the same size + * data structure so a copy is performed instead of providing the + * ELF_CORE_COPY_REGS macro. + */ + +/* + * ELF_CORE_COPY_TASK_REGS is needed to dump register state from multi threaded user projects. + */ +extern int dump_task_regs(struct task_struct *, elf_gregset_t *); +#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs) + +/* This yields a mask that user programs can use to figure out what + instruction set this cpu supports. */ + +#define ELF_HWCAP (0) + +/* 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. */ + +#define ELF_PLATFORM (NULL) + +#define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX) + +#endif /* _ASM_UBICOM32_ELF_H */ |