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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-12-23 09:53:43 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-01-09 14:03:34 +0100 |
| commit | 71b611d172251f4a86fe6e45373cab082371b727 (patch) | |
| tree | c477f904e02692a86c8901dc6dff275ef476fcaf /c/src/lib/libcpu | |
| parent | bsps/powerpc: Add TMR access macros (diff) | |
| download | rtems-71b611d172251f4a86fe6e45373cab082371b727.tar.bz2 | |
bsps/powerpc: ppc_exc_initialize_interrupt_stack()
Diffstat (limited to 'c/src/lib/libcpu')
| -rw-r--r-- | c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_initialize.c | 12 | ||||
| -rw-r--r-- | c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/vectors.h | 19 |
2 files changed, 20 insertions, 11 deletions
diff --git a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_initialize.c b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_initialize.c index f830bad888..ef978f8d57 100644 --- a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_initialize.c +++ b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_initialize.c @@ -156,8 +156,6 @@ void ppc_exc_initialize_with_vector_base( { rtems_status_code sc = RTEMS_SUCCESSFUL; const ppc_exc_categories *const categories = ppc_exc_current_categories(); - uintptr_t const interrupt_stack_end = interrupt_stack_begin + interrupt_stack_size; - uintptr_t interrupt_stack_pointer = interrupt_stack_end - PPC_MINIMUM_STACK_FRAME_SIZE; unsigned vector = 0; uint32_t sda_base = 0; uint32_t r13 = 0; @@ -180,15 +178,7 @@ void ppc_exc_initialize_with_vector_base( ppc_exc_fatal_error(); } - /* Ensure proper interrupt stack alignment */ - interrupt_stack_pointer &= ~((uintptr_t) CPU_STACK_ALIGNMENT - 1); - - /* Tag interrupt stack bottom */ - *(uint32_t *) interrupt_stack_pointer = 0; - - /* Move interrupt stack values to special purpose registers */ - PPC_SET_SPECIAL_PURPOSE_REGISTER(SPRG1, interrupt_stack_pointer); - PPC_SET_SPECIAL_PURPOSE_REGISTER(SPRG2, interrupt_stack_begin); + ppc_exc_initialize_interrupt_stack(interrupt_stack_begin, interrupt_stack_size); #ifndef PPC_EXC_CONFIG_BOOKE_ONLY diff --git a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/vectors.h b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/vectors.h index 9e5f466f75..bf13c757f1 100644 --- a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/vectors.h +++ b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/vectors.h @@ -355,6 +355,25 @@ rtems_status_code ppc_exc_make_prologue( size_t *prologue_size ); +static inline void ppc_exc_initialize_interrupt_stack( + uintptr_t stack_begin, + uintptr_t stack_size +) +{ + uintptr_t stack_end = stack_begin + stack_size; + uintptr_t stack_pointer = stack_end - PPC_MINIMUM_STACK_FRAME_SIZE; + + /* Ensure proper interrupt stack alignment */ + stack_pointer &= ~((uintptr_t) CPU_STACK_ALIGNMENT - 1); + + /* Tag interrupt stack bottom */ + *(uint32_t *) stack_pointer = 0; + + /* Move interrupt stack values to special purpose registers */ + PPC_SET_SPECIAL_PURPOSE_REGISTER(SPRG1, stack_pointer); + PPC_SET_SPECIAL_PURPOSE_REGISTER(SPRG2, stack_begin); +} + /** * @brief Initializes the exception handling. * |