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| author | Perry Hung <iperry@gmail.com> | 2011-02-27 18:32:50 -0500 |
|---|---|---|
| committer | Perry Hung <iperry@gmail.com> | 2011-02-27 18:32:50 -0500 |
| commit | 3d455ef619036b2cc77a87b715cf1d45c95ce271 (patch) | |
| tree | 11c348dd408c57525043a2744ee2f1c11eaeef10 | |
| parent | 68c483e3c9c382779d2580598fb0f90a9f55d2ab (diff) | |
| download | librambutan-3d455ef619036b2cc77a87b715cf1d45c95ce271.tar.gz librambutan-3d455ef619036b2cc77a87b715cf1d45c95ce271.zip | |
Also disable systick handler in exception path.
| -rw-r--r-- | libmaple/exc.S | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/libmaple/exc.S b/libmaple/exc.S index 823bbc5..f31fccd 100644 --- a/libmaple/exc.S +++ b/libmaple/exc.S @@ -80,6 +80,9 @@ __default_exc: mov r1 ,#1 @ exception. See flag NONEBASETHRDENA. str r1, [r2] cpsid i @ Disable global interrupts + ldr r2, SYSTICK_CSR @ Disable systick handler + mov r1, #0 + str r1, [r2] ldr r1, CPSR_MASK @ Set default CPSR push {r1} ldr r1, TARGET_PC @ Set target pc @@ -90,8 +93,9 @@ __default_exc: bx lr @ Exception exit .align 4 -CPSR_MASK: .word 0x61000000 -EXC_RETURN: .word 0xFFFFFFF9 -TARGET_PC: .word __error -NVIC_CCR: .word 0xE000ED14 @ NVIC configuration control register +CPSR_MASK: .word 0x61000000 +EXC_RETURN: .word 0xFFFFFFF9 +TARGET_PC: .word __error +NVIC_CCR: .word 0xE000ED14 @ NVIC configuration control register +SYSTICK_CSR: .word 0xE000E010 @ Systick control register |