diff options
| author | Andreas Schwab <schwab@linux-m68k.org> | 2008-11-18 21:25:17 +0100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2011-03-16 19:10:40 +0100 |
| commit | cf6da575ad8d86afa591dd78114067bbff448c36 (patch) | |
| tree | dbad200525a7db07121499f42e2ea765ff4a120a /arch/m68k | |
| parent | m68k: Use base_trap_init() to initialize vectors (diff) | |
| download | linux-cf6da575ad8d86afa591dd78114067bbff448c36.tar.xz linux-cf6da575ad8d86afa591dd78114067bbff448c36.zip | |
m68k: Allow all kernel traps to be handled via exception fixups
This will be needed by the ARAnyM Native Feature initialization code.
Also document that the VEC_TRACE check is needed for 68020/30.
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k')
| -rw-r--r-- | arch/m68k/kernel/traps.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/m68k/kernel/traps.c b/arch/m68k/kernel/traps.c index cd802d49f7e9..4022bbc28878 100644 --- a/arch/m68k/kernel/traps.c +++ b/arch/m68k/kernel/traps.c @@ -58,6 +58,7 @@ asm(".text\n" /* * this must be called very early as the kernel might * use some instruction that are emulated on the 060 + * and so we're prepared for early probe attempts (e.g. nf_init). */ void __init base_trap_init(void) { @@ -78,6 +79,7 @@ void __init base_trap_init(void) } vectors[VEC_BUSERR] = buserr; + vectors[VEC_ILLEGAL] = trap; vectors[VEC_SYS] = system_call; } @@ -1055,9 +1057,11 @@ asmlinkage void trap_c(struct frame *fp) siginfo_t info; if (fp->ptregs.sr & PS_S) { - if ((fp->ptregs.vector >> 2) == VEC_TRACE) { - /* traced a trapping instruction */ - } else + if (fp->ptregs.vector == VEC_TRACE << 2) { + /* traced a trapping instruction on a 68020/30, + * real exception will be executed afterwards. + */ + } else if (!handle_kernel_fault(&fp->ptregs)) bad_super_trap(fp); return; } |