Commit 900de051 authored by Sonic Zhang's avatar Sonic Zhang Committed by Mike Frysinger
Browse files

Blackfin: kgdb: disable interrupt when single stepping in ADEOS 



When ADEOS and kgdb are both enabled, single step in linux kernel may be
scheduled to Xenomai core after return from interrupt handlers.  This
blocks gdb continue operation after a break point is hit.  So, disable
interrupt when running gdb single step.

Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
parent 84e97c10

arch/blackfin/kernel/kgdb.c

+20 −0
Original line number Diff line number Diff line
@@ -345,6 +345,18 @@ void kgdb_roundup_cpu(int cpu, unsigned long flags) 
}

#endif



#ifdef CONFIG_IPIPE

static unsigned long kgdb_arch_imask;



void kgdb_post_primary_code(struct pt_regs *regs, int e_vector, int err_code)

{

	if (kgdb_arch_imask) {

		cpu_pda[raw_smp_processor_id()].ex_imask = kgdb_arch_imask;

		kgdb_arch_imask = 0;

	}

}

#endif



int kgdb_arch_handle_exception(int vector, int signo,

			       int err_code, char *remcom_in_buffer,

			       char *remcom_out_buffer,
@@ -388,6 +400,11 @@ int kgdb_arch_handle_exception(int vector, int signo, 
			 * kgdb_single_step > 0 means in single step mode

			 */

			kgdb_single_step = i + 1;



#ifdef CONFIG_IPIPE

			kgdb_arch_imask = cpu_pda[raw_smp_processor_id()].ex_imask;

			cpu_pda[raw_smp_processor_id()].ex_imask = 0;

#endif

		}



		bfin_correct_hw_break();
@@ -448,6 +465,9 @@ void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long ip) 
int kgdb_arch_init(void)

{

	kgdb_single_step = 0;

#ifdef CONFIG_IPIPE

	kgdb_arch_imask = 0;

#endif



	bfin_remove_all_hw_break();

	return 0;