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Commit 04256096 authored by Michal Simek's avatar Michal Simek
Browse files

microblaze: Remove old user debugging gdb stub 



Old gdb uses priviledged exception handler to handle
gdb exception. New gdb uses brki r16, 0x18 that's why
we can remove old gdb support.

Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent 95d3a8cd

arch/microblaze/kernel/exceptions.c

+1 −8
Original line number Diff line number Diff line
@@ -72,7 +72,6 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type, 
							int fsr, int addr)

{

#ifdef CONFIG_MMU

	int code;

	addr = regs->pc;

#endif
@@ -144,13 +143,7 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type, 
#ifdef CONFIG_MMU

	case MICROBLAZE_PRIVILEGED_EXCEPTION:

		pr_debug("Privileged exception\n");

		/* "brk r0,r0" - used as debug breakpoint - old toolchain */

		if (get_user(code, (unsigned long *)regs->pc) == 0

			&& code == 0x980c0000) {

			_exception(SIGTRAP, regs, TRAP_BRKPT, addr);

		} else {

		_exception(SIGILL, regs, ILL_PRVOPC, addr);

		}

		break;

#endif

	default: