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signal/blackfin: Move the blackfin specific si_codes to asm-generic/siginfo.h

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Having si_codes in many different files simply encourages duplicate definitions
that can cause problems later.  To avoid that merge the blackfin specific si_codes
into uapi/asm-generic/siginfo.h

Update copy_siginfo_to_user to copy with the absence of BUS_MCEERR_AR that blackfin
defines to be something else.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2018-01-13 18:25:09 -06:00
parent 753e5a8543
commit 71ee78d538
3 changed files with 33 additions and 37 deletions
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32
arch/blackfin/include/uapi/asm/siginfo.h
View File

@ -15,36 +15,4 @@
#define si_uid16 _sifields._kill._uid
#define ILL_ILLPARAOP 2 /* illegal opcode combine ********** */
#define ILL_ILLEXCPT 4 /* unrecoverable exception ********** */
#define ILL_CPLB_VI 9 /* D/I CPLB protect violation ******** */
#define ILL_CPLB_MISS 10 /* D/I CPLB miss ******** */
#define ILL_CPLB_MULHIT 11 /* D/I CPLB multiple hit ******** */
#undef NSIGILL
#define NSIGILL 11
/*
* SIGBUS si_codes
*/
#define BUS_OPFETCH 4 /* error from instruction fetch ******** */
#undef NSIGBUS
#define NSIGBUS 4
/*
* SIGTRAP si_codes
*/
#define TRAP_STEP 1 /* single-step breakpoint************* */
#define TRAP_TRACEFLOW 2 /* trace buffer overflow ************* */
#define TRAP_WATCHPT 3 /* watchpoint match ************* */
#define TRAP_ILLTRAP 4 /* illegal trap ************* */
#undef NSIGTRAP
#define NSIGTRAP 4
/*
* SIGSEGV si_codes
*/
#define SEGV_STACKFLOW 3 /* stack overflow */
#undef NSIGSEGV
#define NSIGSEGV 3
#endif /* _UAPI_BFIN_SIGINFO_H */

29
include/uapi/asm-generic/siginfo.h
View File

@ -179,13 +179,24 @@ typedef struct siginfo {
* SIGILL si_codes
*/
#define ILL_ILLOPC 1 /* illegal opcode */
#ifdef __bfin__
# define ILL_ILLPARAOP 2 /* illegal opcode combine */
#endif
#define ILL_ILLOPN 2 /* illegal operand */
#define ILL_ILLADR 3 /* illegal addressing mode */
#define ILL_ILLTRP 4 /* illegal trap */
#ifdef __bfin__
# define ILL_ILLEXCPT 4 /* unrecoverable exception */
#endif
#define ILL_PRVOPC 5 /* privileged opcode */
#define ILL_PRVREG 6 /* privileged register */
#define ILL_COPROC 7 /* coprocessor error */
#define ILL_BADSTK 8 /* internal stack error */
#ifdef __bfin__
# define ILL_CPLB_VI 9 /* D/I CPLB protect violation */
# define ILL_CPLB_MISS 10 /* D/I CPLB miss */
# define ILL_CPLB_MULHIT 11 /* D/I CPLB multiple hit */
#endif
#ifdef __tile__
# define ILL_DBLFLT 9 /* double fault */
# define ILL_HARDWALL 10 /* user networks hardwall violation */
@ -225,7 +236,11 @@ typedef struct siginfo {
*/
#define SEGV_MAPERR 1 /* address not mapped to object */
#define SEGV_ACCERR 2 /* invalid permissions for mapped object */
#define SEGV_BNDERR 3 /* failed address bound checks */
#ifdef __bfin__
# define SEGV_STACKFLOW 3 /* stack overflow */
#else
# define SEGV_BNDERR 3 /* failed address bound checks */
#endif
#ifdef __ia64__
# define __SEGV_PSTKOVF 4 /* paragraph stack overflow */
#else
@ -239,8 +254,12 @@ typedef struct siginfo {
#define BUS_ADRALN 1 /* invalid address alignment */
#define BUS_ADRERR 2 /* non-existent physical address */
#define BUS_OBJERR 3 /* object specific hardware error */
#ifdef __bfin__
# define BUS_OPFETCH 4 /* error from instruction fetch */
#else
/* hardware memory error consumed on a machine check: action required */
#define BUS_MCEERR_AR 4
# define BUS_MCEERR_AR 4
#endif
/* hardware memory error detected in process but not consumed: action optional*/
#define BUS_MCEERR_AO 5
#define NSIGBUS 5
@ -252,6 +271,12 @@ typedef struct siginfo {
#define TRAP_TRACE 2 /* process trace trap */
#define TRAP_BRANCH 3 /* process taken branch trap */
#define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */
#ifdef __bfin__
# define TRAP_STEP 1 /* single-step breakpoint */
# define TRAP_TRACEFLOW 2 /* trace buffer overflow */
# define TRAP_WATCHPT 3 /* watchpoint match */
# define TRAP_ILLTRAP 4 /* illegal trap */
#endif
#define NSIGTRAP 4
/*

9
kernel/signal.c
View File

@ -2770,13 +2770,16 @@ int copy_siginfo_to_user(siginfo_t __user *to, const siginfo_t *from)
err |= __put_user(from->si_flags, &to->si_flags);
err |= __put_user(from->si_isr, &to->si_isr);
#endif
#ifdef BUS_MCEERR_AO
/*
* Other callers might not initialize the si_lsb field,
* so check explicitly for the right codes here.
*/
if (from->si_signo == SIGBUS &&
(from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO))
#ifdef BUS_MCEERR_AR
if (from->si_signo == SIGBUS && from->si_code == BUS_MCEERR_AR)
err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb);
#endif
#ifdef BUS_MCEERR_AO
if (from->si_signo == SIGBUS && from->si_code == BUS_MCEERR_AO)
err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb);
#endif
#ifdef SEGV_BNDERR