mrjbom
mrjbom
/ try test #DB exception(not worked)
Created
July 31, 2020 20:41
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| uint32_t a = 123; | |
| uint32_t dr7 = 0; | |
| //write addr of 'a' to dr0 | |
| __asm__ volatile ("mov %0, %%dr0" :: "r" (&a)); | |
| //read dr7 | |
| __asm__ volatile ("mov %%dr7, %0" : "=r" (dr7)); | |
| //set 16-17 01b - write to dr7 | |
| set_n_bit(dr7, 16, 0); | |
| set_n_bit(dr7, 17, 1); | |
| //set 18-19 lenght 4 bytes - 11b |
mrjbom
/ gist:0876e702e49fc953304549bc5a738113
Created
July 5, 2020 20:35
Draws a colored square for the test of multi-tasking
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| void task_colored_square() { | |
| for(uint32_t l = 0; l < 100; ++l) { | |
| uint32_t r, g, b; | |
| uint32_t hex; | |
| r = 255; g = 0; b = 0; | |
| /* | |
| 255 0 0 | |
| | | |
| V | |
| 255 0 255 |