diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/mbx8xx/irq/irq_asm.S')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mbx8xx/irq/irq_asm.S | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/c/src/lib/libbsp/powerpc/mbx8xx/irq/irq_asm.S b/c/src/lib/libbsp/powerpc/mbx8xx/irq/irq_asm.S index 914ab67a4d..01e02f4027 100644 --- a/c/src/lib/libbsp/powerpc/mbx8xx/irq/irq_asm.S +++ b/c/src/lib/libbsp/powerpc/mbx8xx/irq/irq_asm.S @@ -35,8 +35,26 @@ SYM (decrementer_exception_vector_prolog_code): */ stwu r1, - (EXCEPTION_FRAME_END)(r1) stw r4, GPR4_OFFSET(r1) +#ifdef THIS_CODE_LINKED_USING_FLASH_ADDR_RANGE + /* + * save link register + */ + mflr r4 + stw r4, EXC_LR_OFFSET(r1) + /* + * make link register contain shared_raw_irq_code_entry + * address + */ + lis r4,shared_raw_irq_code_entry@h + ori r4,r4,shared_raw_irq_code_entry@l + mtlr r4 + + li r4, ASM_DEC_VECTOR + blr +#else li r4, ASM_DEC_VECTOR ba shared_raw_irq_code_entry +#endif PUBLIC_VAR (decrementer_exception_vector_prolog_code_size) @@ -50,9 +68,27 @@ SYM (external_exception_vector_prolog_code): */ stwu r1, - (EXCEPTION_FRAME_END)(r1) stw r4, GPR4_OFFSET(r1) +#ifdef THIS_CODE_LINKED_USING_FLASH_ADDR_RANGE + /* + * save link register + */ + mflr r4 + stw r4, EXC_LR_OFFSET(r1) + /* + * make link register contain shared_raw_irq_code_entry + * address + */ + lis r4,shared_raw_irq_code_entry@h + ori r4,r4,shared_raw_irq_code_entry@l + mtlr r4 + + li r4, ASM_EXT_VECTOR + blr +#else li r4, ASM_EXT_VECTOR ba shared_raw_irq_code_entry - +#endif + PUBLIC_VAR (external_exception_vector_prolog_code_size) external_exception_vector_prolog_code_size = . - external_exception_vector_prolog_code @@ -116,13 +152,17 @@ SYM (shared_raw_irq_code_entry): mfcr r5 mfctr r6 mfxer r7 +#ifndef THIS_CODE_LINKED_USING_FLASH_ADDR_RANGE mflr r8 - +#endif + stw r5, EXC_CR_OFFSET(r1) stw r6, EXC_CTR_OFFSET(r1) stw r7, EXC_XER_OFFSET(r1) +#ifndef THIS_CODE_LINKED_USING_FLASH_ADDR_RANGE stw r8, EXC_LR_OFFSET(r1) - +#endif + /* * Add some non volatile registers to store information * that will be used when returning from C handler |