21 lines
725 B
ReStructuredText
21 lines
725 B
ReStructuredText
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Stack push and pop
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==================
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Document conventions
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--------------------
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The ``push()`` and ``pop()`` instructions accept as their argument a register set containing
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a subset, or possibly all, of the general-purpose registers R0-R12 and the link register (lr or R14).
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As with any Python set the order in which the registers are specified is immaterial. Thus the
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in the following example the pop() instruction would restore R1, R7 and R8 to their contents prior
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to the push():
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* push({r1, r8, r7}) Save three registers on the stack.
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* pop({r7, r1, r8}) Restore them
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Stack operations
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----------------
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* push({regset}) Push a set of registers onto the stack
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* pop({regset}) Restore a set of registers from the stack
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