diff options
Diffstat (limited to 'c/src/exec/score/cpu/powerpc/new_exception_processing/c_isr.inl')
| -rw-r--r-- | c/src/exec/score/cpu/powerpc/new_exception_processing/c_isr.inl | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/c/src/exec/score/cpu/powerpc/new_exception_processing/c_isr.inl b/c/src/exec/score/cpu/powerpc/new_exception_processing/c_isr.inl new file mode 100644 index 0000000000..68f8116fe9 --- /dev/null +++ b/c/src/exec/score/cpu/powerpc/new_exception_processing/c_isr.inl @@ -0,0 +1,9 @@ +RTEMS_INLINE_ROUTINE boolean _ISR_Is_in_progress( void ) +{ + register unsigned int isr_nesting_level; + /* + * Move from special purpose register 0 (mfspr SPRG0, r3) + */ + asm volatile ("mfspr %0, 272" : "=r" (isr_nesting_level)); + return isr_nesting_level; +} |