diff options
Diffstat (limited to 'arch/blackfin/mach-common/entry.S')
| -rw-r--r-- | arch/blackfin/mach-common/entry.S | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S index eceb484d90f..117c01c2c6b 100644 --- a/arch/blackfin/mach-common/entry.S +++ b/arch/blackfin/mach-common/entry.S @@ -158,14 +158,16 @@ ENTRY(_ex_single_step) cc = r7 == r6; if cc jump _bfin_return_from_exception; +#ifdef CONFIG_KGDB /* Don't do single step in hardware exception handler */ p5.l = lo(IPEND); p5.h = hi(IPEND); r6 = [p5]; + cc = bittst(r6, 4); + if cc jump _bfin_return_from_exception; cc = bittst(r6, 5); if cc jump _bfin_return_from_exception; -#ifdef CONFIG_KGDB /* skip single step if current interrupt priority is higher than * that of the first instruction, from which gdb starts single step */ r6 >>= 6; @@ -186,17 +188,27 @@ ENTRY(_ex_single_step) if cc jump .Ldo_single_step; r6 += -1; cc = r6 < r7; - if cc jump _bfin_return_from_exception; + if cc jump 1f; .Ldo_single_step: -#endif - +#else /* If we were in user mode, do the single step normally. */ + p5.l = lo(IPEND); + p5.h = hi(IPEND); r6 = [p5]; r7 = 0xffe0 (z); r7 = r7 & r6; cc = r7 == 0; - if cc jump 1f; + if !cc jump 1f; +#endif + /* Single stepping only a single instruction, so clear the trace + * bit here. */ + r7 = syscfg; + bitclr (r7, 0); + syscfg = R7; + jump _ex_trap_c; + +1: /* * We were in an interrupt handler. By convention, all of them save * SYSCFG with their first instruction, so by checking whether our @@ -224,15 +236,11 @@ ENTRY(_ex_single_step) cc = R7 == R6; if !cc jump _bfin_return_from_exception; -1: - /* Single stepping only a single instruction, so clear the trace - * bit here. */ r7 = syscfg; bitclr (r7, 0); syscfg = R7; - jump _ex_trap_c; - + /* Fall through to _bfin_return_from_exception. */ ENDPROC(_ex_single_step) ENTRY(_bfin_return_from_exception) @@ -1414,6 +1422,12 @@ ENTRY(_sys_call_table) .long _sys_semtimedop .long _sys_timerfd_settime .long _sys_timerfd_gettime + .long _sys_signalfd4 /* 360 */ + .long _sys_eventfd2 + .long _sys_epoll_create1 + .long _sys_dup3 + .long _sys_pipe2 + .long _sys_inotify_init1 /* 365 */ .rept NR_syscalls-(.-_sys_call_table)/4 .long _sys_ni_syscall |