1/* 2 * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch> 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program. If not, see <http://www.gnu.org/licenses/>. 16 * 17 */ 18 19#ifndef _ASM_NIOS2_ELF_H 20#define _ASM_NIOS2_ELF_H 21 22#include <uapi/asm/elf.h> 23 24/* 25 * This is used to ensure we don't load something for the wrong architecture. 26 */ 27#define elf_check_arch(x) ((x)->e_machine == EM_ALTERA_NIOS2) 28 29#define ELF_PLAT_INIT(_r, load_addr) 30 31#define CORE_DUMP_USE_REGSET 32#define ELF_EXEC_PAGESIZE 4096 33 34/* This is the location that an ET_DYN program is loaded if exec'ed. Typical 35 use of this is to invoke "./ld.so someprog" to test out a new version of 36 the loader. We need to make sure that it is out of the way of the program 37 that it will "exec", and that there is sufficient room for the brk. */ 38 39#define ELF_ET_DYN_BASE 0xD0000000UL 40 41/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is 42 now struct_user_regs, they are different) */ 43 44#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 45struct linux_binprm; 46extern int arch_setup_additional_pages(struct linux_binprm *bprm, 47 int uses_interp); 48#define ELF_CORE_COPY_REGS(pr_reg, regs) \ 49{ do { \ 50 /* Bleech. */ \ 51 pr_reg[0] = regs->r8; \ 52 pr_reg[1] = regs->r9; \ 53 pr_reg[2] = regs->r10; \ 54 pr_reg[3] = regs->r11; \ 55 pr_reg[4] = regs->r12; \ 56 pr_reg[5] = regs->r13; \ 57 pr_reg[6] = regs->r14; \ 58 pr_reg[7] = regs->r15; \ 59 pr_reg[8] = regs->r1; \ 60 pr_reg[9] = regs->r2; \ 61 pr_reg[10] = regs->r3; \ 62 pr_reg[11] = regs->r4; \ 63 pr_reg[12] = regs->r5; \ 64 pr_reg[13] = regs->r6; \ 65 pr_reg[14] = regs->r7; \ 66 pr_reg[15] = regs->orig_r2; \ 67 pr_reg[16] = regs->ra; \ 68 pr_reg[17] = regs->fp; \ 69 pr_reg[18] = regs->sp; \ 70 pr_reg[19] = regs->gp; \ 71 pr_reg[20] = regs->estatus; \ 72 pr_reg[21] = regs->ea; \ 73 pr_reg[22] = regs->orig_r7; \ 74 { \ 75 struct switch_stack *sw = ((struct switch_stack *)regs) - 1; \ 76 pr_reg[23] = sw->r16; \ 77 pr_reg[24] = sw->r17; \ 78 pr_reg[25] = sw->r18; \ 79 pr_reg[26] = sw->r19; \ 80 pr_reg[27] = sw->r20; \ 81 pr_reg[28] = sw->r21; \ 82 pr_reg[29] = sw->r22; \ 83 pr_reg[30] = sw->r23; \ 84 pr_reg[31] = sw->fp; \ 85 pr_reg[32] = sw->gp; \ 86 pr_reg[33] = sw->ra; \ 87 } \ 88} while (0); } 89 90/* This yields a mask that user programs can use to figure out what 91 instruction set this cpu supports. */ 92 93#define ELF_HWCAP (0) 94 95/* This yields a string that ld.so will use to load implementation 96 specific libraries for optimization. This is more specific in 97 intent than poking at uname or /proc/cpuinfo. */ 98 99#define ELF_PLATFORM (NULL) 100 101#endif /* _ASM_NIOS2_ELF_H */ 102