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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-10-19 21:19:19 +0200
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-10-19 21:19:19 +0200
commite05dacd71db0a5da7c1a44bcaab2a8a240b9c233 (patch)
tree31382cf1c7d62c03126448affb2fc86e8c4aaa8b /arch/ia64/include/uapi/asm/sigcontext.h
parentxen: arm: comment on why 64-bit xen_pfn_t is safe even on 32 bit (diff)
parentLinux 3.7-rc1 (diff)
downloadlinux-e05dacd71db0a5da7c1a44bcaab2a8a240b9c233.tar.xz
linux-e05dacd71db0a5da7c1a44bcaab2a8a240b9c233.zip
Merge commit 'v3.7-rc1' into stable/for-linus-3.7
* commit 'v3.7-rc1': (10892 commits) Linux 3.7-rc1 x86, boot: Explicitly include autoconf.h for hostprogs perf: Fix UAPI fallout ARM: config: make sure that platforms are ordered by option string ARM: config: sort select statements alphanumerically UAPI: (Scripted) Disintegrate include/linux/byteorder UAPI: (Scripted) Disintegrate include/linux UAPI: Unexport linux/blk_types.h UAPI: Unexport part of linux/ppp-comp.h perf: Handle new rbtree implementation procfs: don't need a PATH_MAX allocation to hold a string representation of an int vfs: embed struct filename inside of names_cache allocation if possible audit: make audit_inode take struct filename vfs: make path_openat take a struct filename pointer vfs: turn do_path_lookup into wrapper around struct filename variant audit: allow audit code to satisfy getname requests from its names_list vfs: define struct filename and have getname() return it btrfs: Fix compilation with user namespace support enabled userns: Fix posix_acl_file_xattr_userns gid conversion userns: Properly print bluetooth socket uids ...
Diffstat (limited to 'arch/ia64/include/uapi/asm/sigcontext.h')
-rw-r--r--arch/ia64/include/uapi/asm/sigcontext.h70
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/ia64/include/uapi/asm/sigcontext.h b/arch/ia64/include/uapi/asm/sigcontext.h
new file mode 100644
index 000000000000..57ff777bcc40
--- /dev/null
+++ b/arch/ia64/include/uapi/asm/sigcontext.h
@@ -0,0 +1,70 @@
+#ifndef _ASM_IA64_SIGCONTEXT_H
+#define _ASM_IA64_SIGCONTEXT_H
+
+/*
+ * Copyright (C) 1998, 1999, 2001 Hewlett-Packard Co
+ * Copyright (C) 1998, 1999, 2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+
+#include <asm/fpu.h>
+
+#define IA64_SC_FLAG_ONSTACK_BIT 0 /* is handler running on signal stack? */
+#define IA64_SC_FLAG_IN_SYSCALL_BIT 1 /* did signal interrupt a syscall? */
+#define IA64_SC_FLAG_FPH_VALID_BIT 2 /* is state in f[32]-f[127] valid? */
+
+#define IA64_SC_FLAG_ONSTACK (1 << IA64_SC_FLAG_ONSTACK_BIT)
+#define IA64_SC_FLAG_IN_SYSCALL (1 << IA64_SC_FLAG_IN_SYSCALL_BIT)
+#define IA64_SC_FLAG_FPH_VALID (1 << IA64_SC_FLAG_FPH_VALID_BIT)
+
+# ifndef __ASSEMBLY__
+
+/*
+ * Note on handling of register backing store: sc_ar_bsp contains the address that would
+ * be found in ar.bsp after executing a "cover" instruction the context in which the
+ * signal was raised. If signal delivery required switching to an alternate signal stack
+ * (sc_rbs_base is not NULL), the "dirty" partition (as it would exist after executing the
+ * imaginary "cover" instruction) is backed by the *alternate* signal stack, not the
+ * original one. In this case, sc_rbs_base contains the base address of the new register
+ * backing store. The number of registers in the dirty partition can be calculated as:
+ *
+ * ndirty = ia64_rse_num_regs(sc_rbs_base, sc_rbs_base + (sc_loadrs >> 16))
+ *
+ */
+
+struct sigcontext {
+ unsigned long sc_flags; /* see manifest constants above */
+ unsigned long sc_nat; /* bit i == 1 iff scratch reg gr[i] is a NaT */
+ stack_t sc_stack; /* previously active stack */
+
+ unsigned long sc_ip; /* instruction pointer */
+ unsigned long sc_cfm; /* current frame marker */
+ unsigned long sc_um; /* user mask bits */
+ unsigned long sc_ar_rsc; /* register stack configuration register */
+ unsigned long sc_ar_bsp; /* backing store pointer */
+ unsigned long sc_ar_rnat; /* RSE NaT collection register */
+ unsigned long sc_ar_ccv; /* compare and exchange compare value register */
+ unsigned long sc_ar_unat; /* ar.unat of interrupted context */
+ unsigned long sc_ar_fpsr; /* floating-point status register */
+ unsigned long sc_ar_pfs; /* previous function state */
+ unsigned long sc_ar_lc; /* loop count register */
+ unsigned long sc_pr; /* predicate registers */
+ unsigned long sc_br[8]; /* branch registers */
+ /* Note: sc_gr[0] is used as the "uc_link" member of ucontext_t */
+ unsigned long sc_gr[32]; /* general registers (static partition) */
+ struct ia64_fpreg sc_fr[128]; /* floating-point registers */
+
+ unsigned long sc_rbs_base; /* NULL or new base of sighandler's rbs */
+ unsigned long sc_loadrs; /* see description above */
+
+ unsigned long sc_ar25; /* cmp8xchg16 uses this */
+ unsigned long sc_ar26; /* rsvd for scratch use */
+ unsigned long sc_rsvd[12]; /* reserved for future use */
+ /*
+ * The mask must come last so we can increase _NSIG_WORDS
+ * without breaking binary compatibility.
+ */
+ sigset_t sc_mask; /* signal mask to restore after handler returns */
+};
+
+# endif /* __ASSEMBLY__ */
+#endif /* _ASM_IA64_SIGCONTEXT_H */