hex/pointers/stack.fj

———- Stack

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Macros

hex

• hex.sp_inc — Like:  sp++

• hex.sp_dec — Like:  sp--

• hex.sp_add — Like:  sp += value

• hex.sp_sub — Like:  sp -= value

• hex.push_ret_address — Note: the pushed returned address must be popd out afterwards with pop_ret_address.

• hex.pop_ret_address — return_address is a fj-op address, so we assume is dw-aligned.

• hex.push_hex — Like:  stack[++sp] = hex

• hex.push_byte — byte is a hex[:2].

• hex.push — M is (n+1)/2, which is because the function pushes the entire parameter as bytes.

• hex.pop_hex — hex is only an output parameter.

• hex.pop_byte — byte is hex[:2], and it’s only an output parameter.

• hex.pop — M is (n+1)/2, which is because the function pops all the parameters as bytes.