CVS commit: src/sys/arch

["Kamil Rytarowski" <kamil%netbsd.org@localhost>]

Module Name:    src
Committed By:   kamil
Date:           Wed Jan 18 05:12:00 UTC 2017

Modified Files:
        src/sys/arch/amd64/amd64: trap.c
        src/sys/arch/i386/i386: trap.c
        src/sys/arch/x86/include: dbregs.h
        src/sys/arch/x86/x86: dbregs.c

Log Message:
Embed hardware trap and its type that fired (x86), information for tracers

Now x86 throws SIGTRAP on hardware exception with:
 - si_code TRAP_HWWPT - dedicated for hw assisted watchpoint interface
 - si_trap - unchanged (T_TRCTRAP)
 - si_trap2 - watchpoint number that fired
 - si_trap3 - watchpoint specific event description

x86 returns in si_trap3 one of the field from <x86/dbregs.h>
 - X86_HW_WATCHPOINT_EVENT_FIRED - watchpoint fired
 - X86_HW_WATCHPOINT_EVENT_FIRED_AND_SSTEP - watchpoint fired under PT_STEP

Othe changes:
 - restrict more code from <x86/dbregs.h> to _KERNEL

Sponsored bt <The NetBSD Foundation>


To generate a diff of this commit:
cvs rdiff -u -r1.88 -r1.89 src/sys/arch/amd64/amd64/trap.c
cvs rdiff -u -r1.281 -r1.282 src/sys/arch/i386/i386/trap.c
cvs rdiff -u -r1.2 -r1.3 src/sys/arch/x86/include/dbregs.h
cvs rdiff -u -r1.1 -r1.2 src/sys/arch/x86/x86/dbregs.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.