UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Andreas Schwab 2008-11-18 21:25:17 +01:00 committed by Geert Uytterhoeven
parent f67080884a
commit cf6da575ad
1 changed files with 7 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/m68k/kernel/traps.c
View File

@ -58,6 +58,7 @@ asm(".text\n"
/* /*
* this must be called very early as the kernel might * this must be called very early as the kernel might
* use some instruction that are emulated on the 060 * 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) void __init base_trap_init(void)
{ {
@ -78,6 +79,7 @@ void __init base_trap_init(void)
} }
vectors[VEC_BUSERR] = buserr; vectors[VEC_BUSERR] = buserr;
vectors[VEC_ILLEGAL] = trap;
vectors[VEC_SYS] = system_call; vectors[VEC_SYS] = system_call;
} }
@ -1055,9 +1057,11 @@ asmlinkage void trap_c(struct frame *fp)
siginfo_t info; siginfo_t info;
if (fp->ptregs.sr & PS_S) { if (fp->ptregs.sr & PS_S) {
if ((fp->ptregs.vector >> 2) == VEC_TRACE) { if (fp->ptregs.vector == VEC_TRACE << 2) {
/* traced a trapping instruction */ /* traced a trapping instruction on a 68020/30,
} else * real exception will be executed afterwards.
*/
} else if (!handle_kernel_fault(&fp->ptregs))
bad_super_trap(fp); bad_super_trap(fp);
return; return;
} }