diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-02 09:45:39 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-02 09:45:39 -0700 |
commit | de0a5345a55b8dd5a4695181275df0e691176830 (patch) | |
tree | 17530e824f7f46ce0b1757657179fb5957a6add5 /arch/x86/um/shared/sysdep/faultinfo_32.h | |
parent | 994c0e992522c123298b4a91b72f5e67ba2d1123 (diff) | |
parent | 8535639810e578960233ad39def3ac2157b0c3ec (diff) |
Merge branch 'for-linus' of git://github.com/richardweinberger/linux
* 'for-linus' of git://github.com/richardweinberger/linux: (90 commits)
um: fix ubd cow size
um: Fix kmalloc argument order in um/vdso/vma.c
um: switch to use of drivers/Kconfig
UserModeLinux-HOWTO.txt: fix a typo
UserModeLinux-HOWTO.txt: remove ^H characters
um: we need sys/user.h only on i386
um: merge delay_{32,64}.c
um: distribute exports to where exported stuff is defined
um: kill system-um.h
um: generic ftrace.h will do...
um: segment.h is x86-only and needed only there
um: asm/pda.h is not needed anymore
um: hw_irq.h can go generic as well
um: switch to generic-y
um: clean Kconfig up a bit
um: a couple of missing dependencies...
um: kill useless argument of free_chan() and free_one_chan()
um: unify ptrace_user.h
um: unify KSTK_...
um: fix gcov build breakage
...
Diffstat (limited to 'arch/x86/um/shared/sysdep/faultinfo_32.h')
-rw-r--r-- | arch/x86/um/shared/sysdep/faultinfo_32.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/x86/um/shared/sysdep/faultinfo_32.h b/arch/x86/um/shared/sysdep/faultinfo_32.h new file mode 100644 index 00000000000..a26086b8a80 --- /dev/null +++ b/arch/x86/um/shared/sysdep/faultinfo_32.h @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2004 Fujitsu Siemens Computers GmbH + * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com> + * Licensed under the GPL + */ + +#ifndef __FAULTINFO_I386_H +#define __FAULTINFO_I386_H + +/* this structure contains the full arch-specific faultinfo + * from the traps. + * On i386, ptrace_faultinfo unfortunately doesn't provide + * all the info, since trap_no is missing. + * All common elements are defined at the same position in + * both structures, thus making it easy to copy the + * contents without knowledge about the structure elements. + */ +struct faultinfo { + int error_code; /* in ptrace_faultinfo misleadingly called is_write */ + unsigned long cr2; /* in ptrace_faultinfo called addr */ + int trap_no; /* missing in ptrace_faultinfo */ +}; + +#define FAULT_WRITE(fi) ((fi).error_code & 2) +#define FAULT_ADDRESS(fi) ((fi).cr2) + +/* This is Page Fault */ +#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14) + +/* SKAS3 has no trap_no on i386, but get_skas_faultinfo() sets it to 0. */ +#define SEGV_MAYBE_FIXABLE(fi) ((fi)->trap_no == 0 && ptrace_faultinfo) + +#define PTRACE_FULL_FAULTINFO 0 + +#endif |