158 lines
4.6 KiB
C
158 lines
4.6 KiB
C
/* MN10300 ELF constant and register definitions
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*
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* Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#ifndef _ASM_ELF_H
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#define _ASM_ELF_H
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#include <linux/utsname.h>
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#include <asm/ptrace.h>
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#include <asm/user.h>
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/*
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* AM33 relocations
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*/
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#define R_MN10300_NONE 0 /* No reloc. */
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#define R_MN10300_32 1 /* Direct 32 bit. */
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#define R_MN10300_16 2 /* Direct 16 bit. */
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#define R_MN10300_8 3 /* Direct 8 bit. */
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#define R_MN10300_PCREL32 4 /* PC-relative 32-bit. */
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#define R_MN10300_PCREL16 5 /* PC-relative 16-bit signed. */
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#define R_MN10300_PCREL8 6 /* PC-relative 8-bit signed. */
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#define R_MN10300_24 9 /* Direct 24 bit. */
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#define R_MN10300_RELATIVE 23 /* Adjust by program base. */
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#define R_MN10300_SYM_DIFF 33 /* Adjustment when relaxing. */
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#define R_MN10300_ALIGN 34 /* Alignment requirement. */
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/*
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* AM33/AM34 HW Capabilities
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*/
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#define HWCAP_MN10300_ATOMIC_OP_UNIT 1 /* Has AM34 Atomic Operations */
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/*
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* ELF register definitions..
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*/
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typedef unsigned long elf_greg_t;
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#define ELF_NGREG ((sizeof(struct pt_regs) / sizeof(elf_greg_t)) - 1)
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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#define ELF_NFPREG 32
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typedef float elf_fpreg_t;
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typedef struct {
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elf_fpreg_t fpregs[ELF_NFPREG];
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u_int32_t fpcr;
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} elf_fpregset_t;
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/*
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* This is used to ensure we don't load something for the wrong architecture
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*/
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#define elf_check_arch(x) \
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(((x)->e_machine == EM_CYGNUS_MN10300) || \
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((x)->e_machine == EM_MN10300))
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/*
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* These are used to set parameters in the core dumps.
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*/
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#define ELF_CLASS ELFCLASS32
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#define ELF_DATA ELFDATA2LSB
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#define ELF_ARCH EM_MN10300
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/*
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* ELF process initialiser
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*/
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#define ELF_PLAT_INIT(_r, load_addr) \
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do { \
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struct pt_regs *_ur = current->thread.uregs; \
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_ur->a3 = 0; _ur->a2 = 0; _ur->d3 = 0; _ur->d2 = 0; \
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_ur->mcvf = 0; _ur->mcrl = 0; _ur->mcrh = 0; _ur->mdrq = 0; \
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_ur->e1 = 0; _ur->e0 = 0; _ur->e7 = 0; _ur->e6 = 0; \
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_ur->e5 = 0; _ur->e4 = 0; _ur->e3 = 0; _ur->e2 = 0; \
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_ur->lar = 0; _ur->lir = 0; _ur->mdr = 0; \
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_ur->a1 = 0; _ur->a0 = 0; _ur->d1 = 0; _ur->d0 = 0; \
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} while (0)
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#define CORE_DUMP_USE_REGSET
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#define ELF_EXEC_PAGESIZE 4096
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/*
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* This is the location that an ET_DYN program is loaded if exec'ed. Typical
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* use of this is to invoke "./ld.so someprog" to test out a new version of
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* the loader. We need to make sure that it is out of the way of the program
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* that it will "exec", and that there is sufficient room for the brk.
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* - must clear the VMALLOC area
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*/
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#define ELF_ET_DYN_BASE 0x04000000
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/*
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* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
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* now struct user_regs, they are different)
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* - ELF_CORE_COPY_REGS has been guessed, and may be wrong
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*/
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#define ELF_CORE_COPY_REGS(pr_reg, regs) \
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do { \
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pr_reg[0] = regs->a3; \
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pr_reg[1] = regs->a2; \
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pr_reg[2] = regs->d3; \
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pr_reg[3] = regs->d2; \
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pr_reg[4] = regs->mcvf; \
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pr_reg[5] = regs->mcrl; \
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pr_reg[6] = regs->mcrh; \
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pr_reg[7] = regs->mdrq; \
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pr_reg[8] = regs->e1; \
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pr_reg[9] = regs->e0; \
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pr_reg[10] = regs->e7; \
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pr_reg[11] = regs->e6; \
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pr_reg[12] = regs->e5; \
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pr_reg[13] = regs->e4; \
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pr_reg[14] = regs->e3; \
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pr_reg[15] = regs->e2; \
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pr_reg[16] = regs->sp; \
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pr_reg[17] = regs->lar; \
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pr_reg[18] = regs->lir; \
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pr_reg[19] = regs->mdr; \
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pr_reg[20] = regs->a1; \
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pr_reg[21] = regs->a0; \
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pr_reg[22] = regs->d1; \
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pr_reg[23] = regs->d0; \
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pr_reg[24] = regs->orig_d0; \
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pr_reg[25] = regs->epsw; \
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pr_reg[26] = regs->pc; \
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} while (0);
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/*
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* This yields a mask that user programs can use to figure out what
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* instruction set this CPU supports. This could be done in user space,
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* but it's not easy, and we've already done it here.
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*/
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#ifdef CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT
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#define ELF_HWCAP (HWCAP_MN10300_ATOMIC_OP_UNIT)
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#else
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#define ELF_HWCAP (0)
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#endif
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/*
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* This yields a string that ld.so will use to load implementation
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* specific libraries for optimization. This is more specific in
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* intent than poking at uname or /proc/cpuinfo.
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*
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* For the moment, we have only optimizations for the Intel generations,
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* but that could change...
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*/
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#define ELF_PLATFORM (NULL)
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#ifdef __KERNEL__
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#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
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#endif
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#endif /* _ASM_ELF_H */
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