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Linux/arch/nios2/include/asm/elf.h

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  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
 45 struct linux_binprm;
 46 extern 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 

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