forked from luck/tmp_suning_uos_patched
16f3e95b32
Historically, the top three bytes of personality have been used for things such as ADDR_NO_RANDOMIZE, which made sense only for specific architectures. We now however have a flag there that is general no matter the architecture (UNAME26); generally we have to be careful to preserve the personality flags across exec(). This patch tries to fix all architectures that forcefully overwrite personality flags during exec() (ppc32 and s390 have been fixed recently by commitsf9783ec862("[S390] Do not clobber personality flags on exec") and59e4c3a2fe("powerpc/32: Don't clobber personality flags on exec") in a similar way already). Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Mark Salter <msalter@redhat.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: Lennox Wu <lennox.wu@gmail.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
159 lines
4.6 KiB
C
159 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) \
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set_personality(PER_LINUX | (current->personality & (~PER_MASK)))
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#endif
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#endif /* _ASM_ELF_H */
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