/* MN10300 ELF constant and register definitions * * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd. * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public Licence * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ #ifndef _ASM_ELF_H #define _ASM_ELF_H #include <linux/utsname.h> #include <asm/ptrace.h> #include <asm/user.h> /* * AM33 relocations */ #define R_MN10300_NONE 0 /* No reloc. */ #define R_MN10300_32 1 /* Direct 32 bit. */ #define R_MN10300_16 2 /* Direct 16 bit. */ #define R_MN10300_8 3 /* Direct 8 bit. */ #define R_MN10300_PCREL32 4 /* PC-relative 32-bit. */ #define R_MN10300_PCREL16 5 /* PC-relative 16-bit signed. */ #define R_MN10300_PCREL8 6 /* PC-relative 8-bit signed. */ #define R_MN10300_24 9 /* Direct 24 bit. */ #define R_MN10300_RELATIVE 23 /* Adjust by program base. */ /* * ELF register definitions.. */ 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]; #define ELF_NFPREG 32 typedef float elf_fpreg_t; typedef struct { elf_fpreg_t fpregs[ELF_NFPREG]; u_int32_t fpcr; } elf_fpregset_t; extern int dump_fpu(struct pt_regs *, 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_CYGNUS_MN10300) || \ ((x)->e_machine == EM_MN10300)) /* * These are used to set parameters in the core dumps. */ #define ELF_CLASS ELFCLASS32 #define ELF_DATA ELFDATA2LSB #define ELF_ARCH EM_MN10300 /* * ELF process initialiser */ #define ELF_PLAT_INIT(_r, load_addr) \ do { \ struct pt_regs *_ur = current->thread.uregs; \ _ur->a3 = 0; _ur->a2 = 0; _ur->d3 = 0; _ur->d2 = 0; \ _ur->mcvf = 0; _ur->mcrl = 0; _ur->mcrh = 0; _ur->mdrq = 0; \ _ur->e1 = 0; _ur->e0 = 0; _ur->e7 = 0; _ur->e6 = 0; \ _ur->e5 = 0; _ur->e4 = 0; _ur->e3 = 0; _ur->e2 = 0; \ _ur->lar = 0; _ur->lir = 0; _ur->mdr = 0; \ _ur->a1 = 0; _ur->a0 = 0; _ur->d1 = 0; _ur->d0 = 0; \ } while (0) #define USE_ELF_CORE_DUMP #define ELF_EXEC_PAGESIZE 4096 /* * 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. * - must clear the VMALLOC area */ #define ELF_ET_DYN_BASE 0x04000000 /* * regs is struct pt_regs, pr_reg is elf_gregset_t (which is * now struct user_regs, they are different) * - ELF_CORE_COPY_REGS has been guessed, and may be wrong */ #define ELF_CORE_COPY_REGS(pr_reg, regs) \ do { \ pr_reg[0] = regs->a3; \ pr_reg[1] = regs->a2; \ pr_reg[2] = regs->d3; \ pr_reg[3] = regs->d2; \ pr_reg[4] = regs->mcvf; \ pr_reg[5] = regs->mcrl; \ pr_reg[6] = regs->mcrh; \ pr_reg[7] = regs->mdrq; \ pr_reg[8] = regs->e1; \ pr_reg[9] = regs->e0; \ pr_reg[10] = regs->e7; \ pr_reg[11] = regs->e6; \ pr_reg[12] = regs->e5; \ pr_reg[13] = regs->e4; \ pr_reg[14] = regs->e3; \ pr_reg[15] = regs->e2; \ pr_reg[16] = regs->sp; \ pr_reg[17] = regs->lar; \ pr_reg[18] = regs->lir; \ pr_reg[19] = regs->mdr; \ pr_reg[20] = regs->a1; \ pr_reg[21] = regs->a0; \ pr_reg[22] = regs->d1; \ pr_reg[23] = regs->d0; \ pr_reg[24] = regs->orig_d0; \ pr_reg[25] = regs->epsw; \ pr_reg[26] = regs->pc; \ } while (0); /* * This yields a mask that user programs can use to figure out what * instruction set this CPU supports. This could be done in user space, * but it's not easy, and we've already done it here. */ #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. * * For the moment, we have only optimizations for the Intel generations, * but that could change... */ #define ELF_PLATFORM (NULL) #ifdef __KERNEL__ #define SET_PERSONALITY(ex, ibcs2) set_personality(PER_LINUX) #endif #endif /* _ASM_ELF_H */