diff options
Diffstat (limited to 'arch/unicore32')
| -rw-r--r-- | arch/unicore32/kernel/setup.h | 2 | ||||
| -rw-r--r-- | arch/unicore32/kernel/traps.c | 2 | ||||
| -rw-r--r-- | arch/unicore32/lib/backtrace.S | 24 |
3 files changed, 18 insertions, 10 deletions
diff --git a/arch/unicore32/kernel/setup.h b/arch/unicore32/kernel/setup.h index 03e70e37f472..967352323185 100644 --- a/arch/unicore32/kernel/setup.h +++ b/arch/unicore32/kernel/setup.h @@ -29,7 +29,7 @@ extern void kernel_thread_helper(void); extern void __init early_signal_init(void); extern asmlinkage void __backtrace(void); -extern asmlinkage void c_backtrace(unsigned long fp); +extern asmlinkage void c_backtrace(unsigned long fp, const char *loglvl); extern void __show_regs(struct pt_regs *); diff --git a/arch/unicore32/kernel/traps.c b/arch/unicore32/kernel/traps.c index 3682a4c5d927..2b7d73456865 100644 --- a/arch/unicore32/kernel/traps.c +++ b/arch/unicore32/kernel/traps.c @@ -163,7 +163,7 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk) printk("\n"); if (ok) - c_backtrace(fp); + c_backtrace(fp, KERN_DEFAULT); } void show_stack(struct task_struct *tsk, unsigned long *sp) diff --git a/arch/unicore32/lib/backtrace.S b/arch/unicore32/lib/backtrace.S index f303671e2a4e..6221944b81f3 100644 --- a/arch/unicore32/lib/backtrace.S +++ b/arch/unicore32/lib/backtrace.S @@ -16,6 +16,7 @@ #define sv_fp v5 #define sv_pc v6 #define offset v8 +#define loglvl v9 ENTRY(__backtrace) mov r0, fp @@ -27,10 +28,11 @@ ENTRY(c_backtrace) ENDPROC(__backtrace) ENDPROC(c_backtrace) #else - stm.w (v4 - v8, lr), [sp-] @ Save an extra register + stm.w (v4 - v10, lr), [sp-] @ Save an extra register @ so we have a location... mov.a frame, r0 @ if frame pointer is zero beq no_frame @ we have no stack frames + mov loglvl, r1 1: stm.w (pc), [sp-] @ calculate offset of PC stored ldw.w r0, [sp]+, #4 @ by stmfd for this CPU @@ -95,9 +97,10 @@ for_each_frame: bua for_each_frame 1006: adr r0, .Lbad - mov r1, frame + mov r1, loglvl + mov r2, frame b.l printk -no_frame: ldm.w (v4 - v8, pc), [sp]+ +no_frame: ldm.w (v4 - v10, pc), [sp]+ ENDPROC(__backtrace) ENDPROC(c_backtrace) @@ -128,8 +131,11 @@ ENDPROC(c_backtrace) add v7, v7, #1 cxor.a v7, #6 cmoveq v7, #1 - cmoveq r1, #'\n' - cmovne r1, #' ' + bne 201f + adr r0, .Lcr + mov r1, loglvl + b.l printk +201: ldw.w r3, [stack]+, #-4 mov r2, reg csub.a r2, #8 @@ -141,18 +147,20 @@ ENDPROC(c_backtrace) add r2, r2, #0x10 @ so r2 need add 16 201: adr r0, .Lfp + mov r1, loglvl b.l printk 2: sub.a reg, reg, #1 bns 1b cxor.a v7, #0 beq 201f adr r0, .Lcr + mov r1, loglvl b.l printk 201: ldm.w (instr, reg, stack, v7, pc), [sp]+ -.Lfp: .asciz "%cr%d:%08x" -.Lcr: .asciz "\n" -.Lbad: .asciz "Backtrace aborted due to bad frame pointer <%p>\n" +.Lfp: .asciz "%sr%d:%08x " +.Lcr: .asciz "%s\n" +.Lbad: .asciz "%sBacktrace aborted due to bad frame pointer <%p>\n" .align .Ldsi: .word 0x92eec000 >> 14 @ stm.w sp, (... fp, ip, lr, pc) .word 0x92e10000 >> 14 @ stm.w sp, () |