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_reset(SH2 *sh2)
21 sh2->pc = p32x_sh2_read32(0, sh2->is_slave);
22 sh2->r[15] = p32x_sh2_read32(4, sh2->is_slave);
25 sh2->pending_int_irq = 0;
28 static void sh2_do_irq(SH2 *sh2, int level, int vector)
30 sh2->irq_callback(sh2->is_slave, level);
33 p32x_sh2_write32(sh2->r[15], sh2->sr, sh2->is_slave); /* push SR onto stack */
35 p32x_sh2_write32(sh2->r[15], sh2->pc, sh2->is_slave); /* push PC onto stack */
37 /* set I flags in SR */
38 sh2->sr = (sh2->sr & ~I) | (level << 4);
41 sh2->pc = p32x_sh2_read32(sh2->vbr + vector * 4, sh2->is_slave);
43 /* 13 cycles at best */
44 sh2->cycles_done += 13;
48 void sh2_irl_irq(SH2 *sh2, int level)
50 sh2->pending_irl = level;
51 if (level <= ((sh2->sr >> 4) & 0x0f))
54 sh2_do_irq(sh2, level, 64 + level/2);
57 void sh2_internal_irq(SH2 *sh2, int level, int vector)
59 sh2->pending_int_irq = level;
60 sh2->pending_int_vector = vector;
61 if (level <= ((sh2->sr >> 4) & 0x0f))
64 sh2_do_irq(sh2, level, vector);
65 sh2->pending_int_irq = 0; // auto-clear