sd:tinyc_developer_diary
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| sd:tinyc_developer_diary [2026/04/22 09:45] – appledog | sd:tinyc_developer_diary [2026/04/22 17:14] (current) – appledog | ||
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| Line 837: | Line 837: | ||
| These provide the test cases I used to check my compiler. In order. | These provide the test cases I used to check my compiler. In order. | ||
| - | === First | + | ==== First |
| + | < | ||
| int main(void) { return 0; } | int main(void) { return 0; } | ||
| + | </ | ||
| - | === Symbol table | + | ==== Symbol table |
| + | < | ||
| int main(void) { int a = 5; return a; } | int main(void) { int a = 5; return a; } | ||
| + | </ | ||
| - | === Globals | + | 24 bit: |
| + | < | ||
| + | .clear | ||
| + | int main(void) { | ||
| + | int a = 0x123456; | ||
| + | return a; | ||
| + | } | ||
| + | .compile | ||
| + | .run | ||
| + | </ | ||
| + | |||
| + | ==== Globals | ||
| We can't define them when we make them. It seems like I did something wrong here but I don't know how to fix it. Just define them in main. Whoop de doo. | We can't define them when we make them. It seems like I did something wrong here but I don't know how to fix it. Just define them in main. Whoop de doo. | ||
| + | < | ||
| int g; | int g; | ||
| int main(void) { | int main(void) { | ||
| Line 851: | Line 867: | ||
| return g; | return g; | ||
| } | } | ||
| + | </ | ||
| - | === function call | + | ==== function call |
| + | < | ||
| int a(int x) { return x + 1; } | int a(int x) { return x + 1; } | ||
| int main(void) { return a(41); } | int main(void) { return a(41); } | ||
| + | </ | ||
| + | two arguments: | ||
| - | === Forward Declarations | + | < |
| + | .clear | ||
| + | int add(int a, int b) { return a + b; } | ||
| + | int main(void) { return add(20, 22); } | ||
| + | .compile | ||
| + | .run | ||
| + | </ | ||
| + | |||
| + | ==== Forward Declarations | ||
| Single | Single | ||
| - | | + | < |
| - | int main(void) { return a(41); } | + | int a(int x); |
| - | int helper(int x) { return x + 1; } | + | int main(void) { return a(41); } |
| + | int helper(int x) { return x + 1; } | ||
| + | </ | ||
| multiple | multiple | ||
| - | | + | < |
| - | int main(void) { | + | int a(); |
| - | return a() + a(); | + | int main(void) { |
| - | } | + | return a() + a(); |
| - | int a() { return 5; } | + | } |
| + | int a() { return 5; } | ||
| + | </ | ||
| + | ==== Recursion | ||
| + | < | ||
| + | int even(int n); | ||
| + | int odd(int n); | ||
| + | int even(int n) { if (n == 0) { return 1; } return odd(n - 1); } | ||
| + | int odd(int n) { if (n == 0) { return 0; } return even(n - 1); } | ||
| + | int main(void) { return even(10); } | ||
| + | </ | ||
| - | === Recursion | + | ==== Built-in functions |
| - | int even(int n); | + | < |
| - | int odd(int n); | + | int main(void) { |
| - | int even(int n) { if (n == 0) { return 1; } return odd(n - 1); } | + | putchar(' |
| - | int odd(int n) { if (n == 0) { return 0; } return even(n - 1); } | + | putchar(' |
| - | int main(void) { return even(10); } | + | return 0; |
| - | + | } | |
| - | === Built-in functions | + | </ |
| - | int main(void) { | + | |
| - | putchar(' | + | |
| - | putchar(' | + | |
| - | return 0; | + | |
| - | } | + | |
| + | === Re-wiring pointers | ||
| + | Unfortunately the changes were far more in depth than I expected, and I had to spend an additional ten hours going over the code to fix pointers, the lexer, and everything in between. Oh, and yet more emitters I forgot needed to be changed. Even the REPL itself didn't print out the full return value. This makes me reconsider my choice to go with a 16 bit system. Should the SD-8516 have been 32 bit? Maybe, maybe not. In the end, it works. A 16 bit system can run a 32 bit c, no problem. I mean, look at Commodore BASIC 2.0. It used floats for ints. Steve Wozniak even made a Sweet-16 so that it could use 16 bit registers. We can do 32 bit in the languages. No problem. We are not going to get any practical advantage from going 32 bit internal since we're running on WASM which is 64 bit native anyways. See? We can have our cake and eat it too here. | ||
sd/tinyc_developer_diary.1776851150.txt.gz · Last modified: by appledog
