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>
102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
#ifndef _ASM_SCORE_ELF_H
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#define _ASM_SCORE_ELF_H
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#include <linux/ptrace.h>
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#define EM_SCORE7 135
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/* Relocation types. */
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#define R_SCORE_NONE 0
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#define R_SCORE_HI16 1
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#define R_SCORE_LO16 2
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#define R_SCORE_BCMP 3
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#define R_SCORE_24 4
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#define R_SCORE_PC19 5
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#define R_SCORE16_11 6
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#define R_SCORE16_PC8 7
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#define R_SCORE_ABS32 8
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#define R_SCORE_ABS16 9
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#define R_SCORE_DUMMY2 10
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#define R_SCORE_GP15 11
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#define R_SCORE_GNU_VTINHERIT 12
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#define R_SCORE_GNU_VTENTRY 13
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#define R_SCORE_GOT15 14
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#define R_SCORE_GOT_LO16 15
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#define R_SCORE_CALL15 16
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#define R_SCORE_GPREL32 17
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#define R_SCORE_REL32 18
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#define R_SCORE_DUMMY_HI16 19
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#define R_SCORE_IMM30 20
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#define R_SCORE_IMM32 21
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/* ELF register definitions */
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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))
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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/* Score does not have fp regs. */
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typedef double elf_fpreg_t;
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typedef elf_fpreg_t elf_fpregset_t;
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#define elf_check_arch(x) ((x)->e_machine == EM_SCORE7)
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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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/*
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* These are used to set parameters in the core dumps.
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*/
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#define ELF_DATA ELFDATA2LSB
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#define ELF_ARCH EM_SCORE7
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#define SET_PERSONALITY(ex) \
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do { \
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set_personality(PER_LINUX | (current->personality & (~PER_MASK))); \
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} while (0)
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struct task_struct;
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struct pt_regs;
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#define CORE_DUMP_USE_REGSET
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#define ELF_EXEC_PAGESIZE PAGE_SIZE
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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 userspace,
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but it's not easy, and we've already done it here. */
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#define ELF_HWCAP (0)
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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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For the moment, we have only optimizations for the Intel generations,
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but that could change... */
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#define ELF_PLATFORM (NULL)
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#define ELF_PLAT_INIT(_r, load_addr) \
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do { \
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_r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \
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_r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \
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_r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \
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_r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \
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_r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \
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_r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \
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_r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \
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_r->regs[30] = _r->regs[31] = 0; \
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} while (0)
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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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#ifndef ELF_ET_DYN_BASE
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#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
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#endif
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#endif /* _ASM_SCORE_ELF_H */
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