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annotate test_arm.c @ 999:238141756e67

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Set sprite overflow flag if we completely consume sprite rendering capacity for the line even if there is nothing left to draw. This graphical corruption in the vertical stretching scroll section. Needs hardware confirmation.
author Michael Pavone <pavone@retrodev.com>
date Sat, 30 Apr 2016 16:19:19 -0700
parents 474270dbff15
children
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1af6c1052993 Added untested code for generating ARM machine code
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1 #include <stdio.h>
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2 #include "gen_arm.h"
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3
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4 typedef int32_t (*fib_fun)(int32_t);
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5
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6 int main(int arc, char **argv)
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7 {
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8 code_info code;
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9 init_code_info(&code);
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10 uint32_t *fib = code.cur;
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11 subi(&code, r0, r0, 2, SET_COND);
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12 movi_cc(&code, r0, 1, NO_COND, CC_LT);
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13 bx_cc(&code, lr, CC_LT);
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14 pushm(&code, LR | R4);
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15 mov(&code, r4, r0, NO_COND);
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16 bl(&code, fib);
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17 mov(&code, r1, r0, NO_COND);
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18 addi(&code, r0, r4, 1, NO_COND);
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19 mov(&code, r4, r1, NO_COND);
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20 bl(&code, fib);
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21 add(&code, r0, r4, r0, NO_COND);
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22 popm(&code, LR | R4);
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23 bx(&code, lr);
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24
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25 fib_fun fibc = (fib_fun)fib;
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26 printf("fib(10): %d\n", fibc(10));
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27
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28 return 0;
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29 }