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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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da654b74bd
Currently a SIGTRAP can denote any one of below reasons. - Breakpoint hit - H/W debug register hit - Single step - Signal sent through kill() or rasie() Architectures like powerpc/parisc provides infrastructure to demultiplex SIGTRAP signal by passing down the information for receiving SIGTRAP through si_code of siginfot_t structure. Here is an attempt is generalise this infrastructure by extending it to x86 and x86_64 archs. Signed-off-by: Srinivasa DS <srinivasa@in.ibm.com> Cc: Roland McGrath <roland@redhat.com> Cc: akpm@linux-foundation.org Cc: paulus@samba.org Cc: linuxppc-dev@ozlabs.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
135 lines
3.1 KiB
C
135 lines
3.1 KiB
C
#ifndef _ASM_IA64_SIGINFO_H
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#define _ASM_IA64_SIGINFO_H
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/*
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* Based on <asm-i386/siginfo.h>.
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*
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* Modified 1998-2002
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* David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
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*/
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#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
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#define HAVE_ARCH_SIGINFO_T
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#define HAVE_ARCH_COPY_SIGINFO
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#define HAVE_ARCH_COPY_SIGINFO_TO_USER
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#include <asm-generic/siginfo.h>
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typedef struct siginfo {
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int si_signo;
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int si_errno;
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int si_code;
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int __pad0;
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union {
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int _pad[SI_PAD_SIZE];
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/* kill() */
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struct {
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pid_t _pid; /* sender's pid */
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uid_t _uid; /* sender's uid */
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} _kill;
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/* POSIX.1b timers */
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struct {
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timer_t _tid; /* timer id */
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int _overrun; /* overrun count */
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char _pad[sizeof(__ARCH_SI_UID_T) - sizeof(int)];
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sigval_t _sigval; /* must overlay ._rt._sigval! */
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int _sys_private; /* not to be passed to user */
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} _timer;
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/* POSIX.1b signals */
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struct {
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pid_t _pid; /* sender's pid */
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uid_t _uid; /* sender's uid */
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sigval_t _sigval;
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} _rt;
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/* SIGCHLD */
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struct {
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pid_t _pid; /* which child */
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uid_t _uid; /* sender's uid */
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int _status; /* exit code */
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clock_t _utime;
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clock_t _stime;
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} _sigchld;
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/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
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struct {
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void __user *_addr; /* faulting insn/memory ref. */
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int _imm; /* immediate value for "break" */
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unsigned int _flags; /* see below */
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unsigned long _isr; /* isr */
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} _sigfault;
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/* SIGPOLL */
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struct {
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long _band; /* POLL_IN, POLL_OUT, POLL_MSG (XPG requires a "long") */
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int _fd;
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} _sigpoll;
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} _sifields;
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} siginfo_t;
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#define si_imm _sifields._sigfault._imm /* as per UNIX SysV ABI spec */
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#define si_flags _sifields._sigfault._flags
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/*
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* si_isr is valid for SIGILL, SIGFPE, SIGSEGV, SIGBUS, and SIGTRAP provided that
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* si_code is non-zero and __ISR_VALID is set in si_flags.
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*/
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#define si_isr _sifields._sigfault._isr
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/*
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* Flag values for si_flags:
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*/
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#define __ISR_VALID_BIT 0
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#define __ISR_VALID (1 << __ISR_VALID_BIT)
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/*
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* SIGILL si_codes
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*/
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#define ILL_BADIADDR (__SI_FAULT|9) /* unimplemented instruction address */
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#define __ILL_BREAK (__SI_FAULT|10) /* illegal break */
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#define __ILL_BNDMOD (__SI_FAULT|11) /* bundle-update (modification) in progress */
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#undef NSIGILL
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#define NSIGILL 11
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/*
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* SIGFPE si_codes
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*/
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#define __FPE_DECOVF (__SI_FAULT|9) /* decimal overflow */
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#define __FPE_DECDIV (__SI_FAULT|10) /* decimal division by zero */
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#define __FPE_DECERR (__SI_FAULT|11) /* packed decimal error */
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#define __FPE_INVASC (__SI_FAULT|12) /* invalid ASCII digit */
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#define __FPE_INVDEC (__SI_FAULT|13) /* invalid decimal digit */
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#undef NSIGFPE
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#define NSIGFPE 13
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/*
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* SIGSEGV si_codes
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*/
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#define __SEGV_PSTKOVF (__SI_FAULT|3) /* paragraph stack overflow */
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#undef NSIGSEGV
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#define NSIGSEGV 3
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#undef NSIGTRAP
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#define NSIGTRAP 4
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#ifdef __KERNEL__
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#include <linux/string.h>
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static inline void
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copy_siginfo (siginfo_t *to, siginfo_t *from)
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{
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if (from->si_code < 0)
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memcpy(to, from, sizeof(siginfo_t));
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else
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/* _sigchld is currently the largest know union member */
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memcpy(to, from, 4*sizeof(int) + sizeof(from->_sifields._sigchld));
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}
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#endif /* __KERNEL__ */
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#endif /* _ASM_IA64_SIGINFO_H */
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