7 int sh2_init(SH2 *sh2, int is_slave)
11 memset(sh2, 0, sizeof(*sh2));
12 sh2->is_slave = is_slave;
14 ret = sh2_drc_init(sh2);
19 void sh2_finish(SH2 *sh2)
26 void sh2_reset(SH2 *sh2)
28 sh2->pc = p32x_sh2_read32(0, sh2);
29 sh2->r[15] = p32x_sh2_read32(4, sh2);
32 sh2->pending_int_irq = 0;
35 void sh2_do_irq(SH2 *sh2, int level, int vector)
37 sh2->irq_callback(sh2->is_slave, level);
40 p32x_sh2_write32(sh2->r[15], sh2->sr, sh2); /* push SR onto stack */
42 p32x_sh2_write32(sh2->r[15], sh2->pc, sh2); /* push PC onto stack */
44 /* set I flags in SR */
45 sh2->sr = (sh2->sr & ~I) | (level << 4);
48 sh2->pc = p32x_sh2_read32(sh2->vbr + vector * 4, sh2);
50 /* 13 cycles at best */
51 sh2->cycles_done += 13;
55 void sh2_irl_irq(SH2 *sh2, int level)
57 sh2->pending_irl = level;
58 if (level > sh2->pending_int_irq)
59 sh2->pending_level = level;
61 sh2->pending_level = sh2->pending_int_irq;
66 void sh2_internal_irq(SH2 *sh2, int level, int vector)
68 // FIXME: multiple internal irqs not handled..
69 // assuming internal irqs never clear until accepted
70 sh2->pending_int_irq = level;
71 sh2->pending_int_vector = vector;
72 if (level > sh2->pending_level)
73 sh2->pending_level = level;