diff options
| author | Tetsuyuki Kobayashi <koba@kmckk.co.jp> | 2013-04-05 00:12:51 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-04-13 11:12:46 +0200 |
| commit | 4411b2aea7aa06d7b4aa5f4a7b36957af9b95e08 (patch) | |
| tree | e50a5b0f57eeae5cf06c0bf920a6d049cce068e2 /arch/arm | |
| parent | 0c669fd17a9d8452f70369474925a91139e3005d (diff) | |
BUGFIX: arm: data abort in get_bad_stack_swi
When swi instruction is executed, it is expected to get message
"software interrupt" in console and dump registers and reboot, as
do_software_interrupt() in arch/arm/lib/interrupts.c.
But, actually it causes data abort accessing wrong address in get_bad_stack_swi
macro in arch/arm/cpu/v7/start.S.
This patch fixes this problem.
The same mistake in arch/arm/cpu/{arm1136,arm1176,pxa}/start.S.
Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/arm1136/start.S | 3 | ||||
| -rw-r--r-- | arch/arm/cpu/arm1176/start.S | 4 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/start.S | 3 | ||||
| -rw-r--r-- | arch/arm/cpu/pxa/start.S | 3 |
4 files changed, 9 insertions, 4 deletions
diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S index ad24b80641..ccea2d5cb4 100644 --- a/arch/arm/cpu/arm1136/start.S +++ b/arch/arm/cpu/arm1136/start.S @@ -388,8 +388,9 @@ cpu_init_crit: str r0, [r13] @ save R0's value. ldr r0, IRQ_STACK_START_IN @ get data regions start str lr, [r0] @ save caller lr in position 0 of saved stack - mrs r0, spsr @ get the spsr + mrs lr, spsr @ get the spsr str lr, [r0, #4] @ save spsr in position 1 of saved stack + ldr lr, [r0] @ restore lr ldr r0, [r13] @ restore r0 add r13, r13, #4 @ pop stack entry .endm diff --git a/arch/arm/cpu/arm1176/start.S b/arch/arm/cpu/arm1176/start.S index 1fc1da071b..f20da8eb7b 100644 --- a/arch/arm/cpu/arm1176/start.S +++ b/arch/arm/cpu/arm1176/start.S @@ -393,9 +393,11 @@ c_runtime_cpu_setup: /* save caller lr in position 0 of saved stack */ str lr, [r0] /* get the spsr */ - mrs r0, spsr + mrs lr, spsr /* save spsr in position 1 of saved stack */ str lr, [r0, #4] + /* restore lr */ + ldr lr, [r0] /* restore r0 */ ldr r0, [r13] /* pop stack entry */ diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index 64008ba6cf..61da7acde9 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -463,9 +463,10 @@ ENDPROC(cpu_init_crit) @ spots for abort stack str lr, [r0] @ save caller lr in position 0 @ of saved stack - mrs r0, spsr @ get the spsr + mrs lr, spsr @ get the spsr str lr, [r0, #4] @ save spsr in position 1 of @ saved stack + ldr lr, [r0] @ restore lr ldr r0, [r13] @ restore r0 add r13, r13, #4 @ pop stack entry .endm diff --git a/arch/arm/cpu/pxa/start.S b/arch/arm/cpu/pxa/start.S index 3e07c7c35a..ada91a66c9 100644 --- a/arch/arm/cpu/pxa/start.S +++ b/arch/arm/cpu/pxa/start.S @@ -385,8 +385,9 @@ cpu_init_crit: str r0, [r13] @ save R0's value. ldr r0, IRQ_STACK_START_IN @ get data regions start str lr, [r0] @ save caller lr in position 0 of saved stack - mrs r0, spsr @ get the spsr + mrs lr, spsr @ get the spsr str lr, [r0, #4] @ save spsr in position 1 of saved stack + ldr lr, [r0] @ restore lr ldr r0, [r13] @ restore r0 add r13, r13, #4 @ pop stack entry .endm |