1 #ifndef _ASM_IA64_SIGCONTEXT_H
2 #define _ASM_IA64_SIGCONTEXT_H
3
4 /*
5 * Copyright (C) 1998, 1999 Hewlett-Packard Co
6 * Copyright (C) 1998, 1999 David Mosberger-Tang <davidm@hpl.hp.com>
7 */
8
9 #include <asm/fpu.h>
10
11 #define IA64_SC_FLAG_ONSTACK_BIT 1 /* is handler running on signal stack? */
12 #define IA64_SC_FLAG_IN_SYSCALL_BIT 1 /* did signal interrupt a syscall? */
13 #define IA64_SC_FLAG_FPH_VALID_BIT 2 /* is state in f[32]-f[127] valid? */
14
15 #define IA64_SC_FLAG_ONSTACK (1 << IA64_SC_FLAG_ONSTACK_BIT)
16 #define IA64_SC_FLAG_IN_SYSCALL (1 << IA64_SC_FLAG_IN_SYSCALL_BIT)
17 #define IA64_SC_FLAG_FPH_VALID (1 << IA64_SC_FLAG_FPH_VALID_BIT)
18
19 # ifndef __ASSEMBLY__
20
21 struct sigcontext {
22 unsigned long sc_flags; /* see manifest constants above */
23 unsigned long sc_nat; /* bit i == 1 iff scratch reg gr[i] is a NaT */
24 stack_t sc_stack; /* previously active stack */
25
26 unsigned long sc_ip; /* instruction pointer */
27 unsigned long sc_cfm; /* current frame marker */
28 unsigned long sc_um; /* user mask bits */
29 unsigned long sc_ar_rsc; /* register stack configuration register */
30 unsigned long sc_ar_bsp; /* backing store pointer */
31 unsigned long sc_ar_rnat; /* RSE NaT collection register */
32 unsigned long sc_ar_ccv; /* compare and exchange compare value register */
33 unsigned long sc_ar_unat; /* ar.unat of interrupted context */
34 unsigned long sc_ar_fpsr; /* floating-point status register */
35 unsigned long sc_ar_pfs; /* previous function state */
36 unsigned long sc_ar_lc; /* loop count register */
37 unsigned long sc_pr; /* predicate registers */
38 unsigned long sc_br[8]; /* branch registers */
39 unsigned long sc_gr[32]; /* general registers (static partition) */
40 struct ia64_fpreg sc_fr[128]; /* floating-point registers */
41
42 /*
43 * The mask must come last so we can increase _NSIG_WORDS
44 * without breaking binary compatibility.
45 */
46 sigset_t sc_mask; /* signal mask to restore after handler returns */
47 };
48
49 # endif /* __ASSEMBLY__ */
50 #endif /* _ASM_IA64_SIGCONTEXT_H */
51
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