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| author | Paul Mundt <lethal@linux-sh.org> | 2009-09-01 08:45:35 (GMT) |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-09-01 08:45:35 (GMT) |
| commit | ade315d83c1d53b3c6b820134cb16601351810fe (patch) | |
| tree | 19d528431ba57ba3f4d7593f3849007ef64d0163 | |
| parent | 1e1030dccb1084c8a38976d3656aab1d50d762da (diff) | |
| download | linux-ade315d83c1d53b3c6b820134cb16601351810fe.tar.xz | |
sh: Kill off kgdb's magical NMI debouncing.
The kgdb stub has traditionally tied in to the NMI slot, and manually
handled debounce. Now that we have a generic way to do this instead, all
of the stub-specific debounce silliness can be killed off.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| -rw-r--r-- | arch/sh/include/asm/kgdb.h | 3 | ||||
| -rw-r--r-- | arch/sh/kernel/cpu/sh3/entry.S | 31 | ||||
| -rw-r--r-- | arch/sh/kernel/kgdb.c | 2 |
3 files changed, 0 insertions, 36 deletions
diff --git a/arch/sh/include/asm/kgdb.h b/arch/sh/include/asm/kgdb.h index 72704ed..4235e22 100644 --- a/arch/sh/include/asm/kgdb.h +++ b/arch/sh/include/asm/kgdb.h @@ -30,9 +30,6 @@ static inline void arch_kgdb_breakpoint(void) __asm__ __volatile__ ("trapa #0x3c\n"); } -/* State info */ -extern char in_nmi; /* Debounce flag to prevent NMI reentry*/ - #define BUFMAX 2048 #define CACHE_FLUSH_IS_SAFE 1 diff --git a/arch/sh/kernel/cpu/sh3/entry.S b/arch/sh/kernel/cpu/sh3/entry.S index d1142d3..0151933 100644 --- a/arch/sh/kernel/cpu/sh3/entry.S +++ b/arch/sh/kernel/cpu/sh3/entry.S @@ -53,10 +53,6 @@ * syscall # * */ -#if defined(CONFIG_KGDB) -NMI_VEC = 0x1c0 ! Must catch early for debounce -#endif - /* Offsets to the stack */ OFF_R0 = 0 /* Return value. New ABI also arg4 */ OFF_R1 = 4 /* New ABI: arg5 */ @@ -71,7 +67,6 @@ OFF_PC = (16*4) OFF_SR = (16*4+8) OFF_TRA = (16*4+6*4) - #define k0 r0 #define k1 r1 #define k2 r2 @@ -281,21 +276,12 @@ restore_all: 6: or k0, k2 ! Set the IMASK-bits ldc k2, ssr ! -#if defined(CONFIG_KGDB) - ! Clear in_nmi - mov.l 6f, k0 - mov #0, k1 - mov.b k1, @k0 -#endif mov k4, r15 rte nop .align 2 5: .long 0x00001000 ! DSP -#ifdef CONFIG_KGDB -6: .long in_nmi -#endif 7: .long 0x30000000 ! common exception handler @@ -487,23 +473,6 @@ ENTRY(save_low_regs) ! .balign 512,0,512 ENTRY(handle_interrupt) -#if defined(CONFIG_KGDB) - mov.l 2f, k2 - ! Debounce (filter nested NMI) - mov.l @k2, k0 - mov.l 9f, k1 - cmp/eq k1, k0 - bf 11f - mov.l 10f, k1 - tas.b @k1 - bt 11f - rte - nop - .align 2 -9: .long NMI_VEC -10: .long in_nmi -11: -#endif /* defined(CONFIG_KGDB) */ sts pr, k3 ! save original pr value in k3 mova exception_data, k0 diff --git a/arch/sh/kernel/kgdb.c b/arch/sh/kernel/kgdb.c index d29de78..3e532d0 100644 --- a/arch/sh/kernel/kgdb.c +++ b/arch/sh/kernel/kgdb.c @@ -15,8 +15,6 @@ #include <linux/io.h> #include <asm/cacheflush.h> -char in_nmi = 0; /* Set during NMI to prevent re-entry */ - /* Macros for single step instruction identification */ #define OPCODE_BT(op) (((op) & 0xff00) == 0x8900) #define OPCODE_BF(op) (((op) & 0xff00) == 0x8b00) |