py: Fix dummy definition of BEGIN/END_ATOMIC_SECTION.
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@ -431,10 +431,10 @@ typedef double mp_float_t;
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// On embedded platforms, these will typically enable/disable irqs.
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#ifndef MICROPY_BEGIN_ATOMIC_SECTION
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#define MICROPY_BEGIN_ATOMIC_SECTION()
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#define MICROPY_BEGIN_ATOMIC_SECTION() (0)
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#endif
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#ifndef MICROPY_END_ATOMIC_SECTION
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#define MICROPY_END_ATOMIC_SECTION()
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#define MICROPY_END_ATOMIC_SECTION(state) (void)(state)
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#endif
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// Allow to override static modifier for global objects, e.g. to use with
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@ -88,10 +88,10 @@ mp_obj_t mp_alloc_emergency_exception_buf(mp_obj_t size_in) {
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// Update the 2 variables atomically so that an interrupt can't occur
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// between the assignments.
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mp_uint_t irq_state = MICROPY_BEGIN_ATOMIC_SECTION();
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mp_uint_t atomic_state = MICROPY_BEGIN_ATOMIC_SECTION();
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mp_emergency_exception_buf_size = size;
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mp_emergency_exception_buf = buf;
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MICROPY_END_ATOMIC_SECTION(irq_state);
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MICROPY_END_ATOMIC_SECTION(atomic_state);
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if (old_buf != NULL) {
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m_free(old_buf, old_size);
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