Blackfin arch: fix 2 bugs related to debug
- unable to single step over emuexcpt instruction
- gdbproxy goes into infinite loop when doing gdb does "next" over
"emuexcpt"
Don't decrement PC after software breakpoint.
Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index fae7746..88de053 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -151,13 +151,6 @@
jump.s _bfin_return_from_exception;
ENDPROC(_ex_syscall)
-ENTRY(_ex_soft_bp)
- r7 = retx;
- r7 += -2;
- retx = r7;
- jump.s _ex_trap_c;
-ENDPROC(_ex_soft_bp)
-
ENTRY(_ex_single_step)
/* If we just returned from an interrupt, the single step event is
for the RTI instruction. */
@@ -1087,7 +1080,7 @@
* EXCPT instruction can provide 4 bits of EXCAUSE, allowing 16 to be user defined
*/
.long _ex_syscall /* 0x00 - User Defined - Linux Syscall */
- .long _ex_soft_bp /* 0x01 - User Defined - Software breakpoint */
+ .long _ex_trap_c /* 0x01 - User Defined - Software breakpoint */
#ifdef CONFIG_KGDB
.long _ex_trap_c /* 0x02 - User Defined - KGDB initial connection
and break signal trap */