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477499b97b
- Optimized logic for #pragma bank. - Updated test cases and references. - Made #pragma NAME parameters optional. - Retested all test cases.
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/**
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* @file call-banked-stack-case-5-far-0.c
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* @author Sven Van de Velde (sven.van.de.velde@telenet.be),
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* @author Jesper Gravgaard
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* @brief Test a procedure with calling convention PHI - case #5.
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* The compiler will throw an error because the far call is a __stackcall
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* and this is not (yet) implemented and supported.
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* @version 0.1
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* @date 2023-04-11
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*
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* @copyright Copyright (c) 2023
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*
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* The following cases exist in banked calling implementations:
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*
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* - case #1 - unbanked to unbanked and no banking areas
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* - case #2 - unbanked to banked to any bank area
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* - case #3 - banked to unbanked from any bank area
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* - case #4 - banked to same bank in same bank area
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* - case #5 - banked to different bank in same bank area
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* - case #6 - banked to any bank between different bank areas
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*
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* This brings us to the call types:
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*
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* - near = case #1, #3, #4
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* - close = case #2, #6
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* - far = case #5
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*
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*/
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#pragma link("call-banked-phi.ld")
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char* const SCREEN = (char*)0x0400;
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#pragma code_seg(Code)
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void main(void) {
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SCREEN[0] = plus('0', 7); // close call
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}
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#pragma code_seg(RAM_Bank1)
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__bank(cx16_ram, 1) char plus(char a, char b) {
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return min(a, b); // far call
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}
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#pragma code_seg(RAM_Bank2)
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__stackcall __bank(cx16_ram, 2) char min(char a, char b) {
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return a+b;
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}
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