| /kernel/trunk/arch/sparc64/src/trap/trap_table.S |
|---|
| 37,7 → 37,12 |
| * This arrangement is beneficial because kernel handlers stay on their |
| * link-time addresses which is good for debugging. |
| */ |
| .register %g2, #scratch |
| .register %g3, #scratch |
| .register %g6, #scratch |
| .register %g7, #scratch |
| .text |
| #include <arch/trap/trap_table.h> |
| 202,3 → 207,20 |
| .global trap_table_save |
| trap_table_save: |
| .space TABLE_SIZE, 0 |
| /* Trap handler that explicitly saves global registers. |
| * |
| * Input registers: |
| * %l0 Address of function to call. |
| * Output registers: |
| * %l1 - %l7 Copy of %g1 - %g7 |
| */ |
| .global saving_handler |
| saving_handler: |
| SAVE_GLOBALS |
| call %l0 |
| nop |
| RESTORE_GLOBALS |
| restore /* matches the save instruction from the top-level handler */ |
| retry |