diff options
Diffstat (limited to 'arch/blackfin/mach-common/entry.S')
| -rw-r--r-- | arch/blackfin/mach-common/entry.S | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S index da0558ad1b1a..fb1795d5be2a 100644 --- a/arch/blackfin/mach-common/entry.S +++ b/arch/blackfin/mach-common/entry.S @@ -42,6 +42,7 @@ #include <asm/thread_info.h> /* TIF_NEED_RESCHED */ #include <asm/asm-offsets.h> #include <asm/trace.h> +#include <asm/traps.h> #include <asm/context.S> @@ -84,13 +85,15 @@ ENTRY(_ex_workaround_261) if !cc jump _bfin_return_from_exception; /* fall through */ R7 = P4; - R6 = 0x26; /* Data CPLB Miss */ + R6 = VEC_CPLB_M; /* Data CPLB Miss */ cc = R6 == R7; if cc jump _ex_dcplb_miss (BP); - R6 = 0x23; /* Data CPLB Miss */ +#ifdef CONFIG_MPU + R6 = VEC_CPLB_VL; /* Data CPLB Violation */ cc = R6 == R7; if cc jump _ex_dcplb_viol (BP); - /* Handle 0x23 Data CPLB Protection Violation +#endif + /* Handle Data CPLB Protection Violation * and Data CPLB Multiple Hits - Linux Trap Zero */ jump _ex_trap_c; @@ -215,7 +218,7 @@ ENTRY(_ex_single_step) /* Single stepping only a single instruction, so clear the trace * bit here. */ r7 = syscfg; - bitclr (r7, 0); + bitclr (r7, SYSCFG_SSSTEP_P); syscfg = R7; jump _ex_trap_c; @@ -248,7 +251,7 @@ ENTRY(_ex_single_step) if !cc jump _bfin_return_from_exception; r7 = syscfg; - bitclr (r7, 0); + bitclr (r7, SYSCFG_SSSTEP_P); /* Turn off single step */ syscfg = R7; /* Fall through to _bfin_return_from_exception. */ @@ -270,7 +273,7 @@ ENTRY(_bfin_return_from_exception) r6.l = lo(SEQSTAT_EXCAUSE); r6.h = hi(SEQSTAT_EXCAUSE); r7 = r7 & r6; - r6 = 0x25; + r6 = VEC_UNCOV; CC = R7 == R6; if CC JUMP _double_fault; #endif @@ -339,9 +342,11 @@ ENTRY(_ex_trap_c) r6 = retx; [p5 + PDA_RETX] = r6; #endif + /* Save the state of single stepping */ r6 = SYSCFG; [p5 + PDA_SYSCFG] = r6; - BITCLR(r6, 0); + /* Clear it while we handle the exception in IRQ5 mode */ + BITCLR(r6, SYSCFG_SSSTEP_P); SYSCFG = r6; /* Disable all interrupts, but make sure level 5 is enabled so @@ -364,7 +369,7 @@ ENDPROC(_ex_trap_c) * exception. This is a unrecoverable event, so crash. * Note: this cannot be ENTRY() as we jump here with "if cc jump" ... */ -_double_fault: +ENTRY(_double_fault) /* Turn caches & protection off, to ensure we don't get any more * double exceptions */ @@ -869,7 +874,7 @@ ENTRY(_ret_from_exception) raise 15; /* raise evt15 to do signal or reschedule */ 4: r0 = syscfg; - bitclr(r0, 0); + bitclr(r0, SYSCFG_SSSTEP_P); /* Turn off single step */ syscfg = r0; 5: rts; @@ -1605,6 +1610,8 @@ ENTRY(_sys_call_table) .long _sys_inotify_init1 /* 365 */ .long _sys_preadv .long _sys_pwritev + .long _sys_rt_tgsigqueueinfo + .long _sys_perf_counter_open .rept NR_syscalls-(.-_sys_call_table)/4 .long _sys_ni_syscall |