+/*
+ * PicoDrive
+ * (C) notaz, 2009,2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
#include <string.h>
#include <stddef.h>
{
int ret = 0;
- memset(sh2, 0, sizeof(*sh2));
+ memset(sh2, 0, offsetof(SH2, mult_m68k_to_sh2));
sh2->is_slave = is_slave;
pdb_register_cpu(sh2, PDBCT_SH2, is_slave ? "ssh2" : "msh2");
#ifdef DRC_SH2
sh2->pc = p32x_sh2_read32(sh2->vbr + vector * 4, sh2);
/* 13 cycles at best */
- sh2->cycles_done += 13;
+ sh2->m68krcycles_done += C_SH2_TO_M68K(*sh2, 13);
// sh2->icount -= 13;
}
-void sh2_irl_irq(SH2 *sh2, int level, int nested_call)
+int sh2_irl_irq(SH2 *sh2, int level, int nested_call)
{
+ int taken;
+
sh2->pending_irl = level;
if (level < sh2->pending_int_irq)
level = sh2->pending_int_irq;
sh2->pending_level = level;
- if (!nested_call) {
- // not in memhandler, so handle this now (recompiler friendly)
- // do this to avoid missing irqs that other SH2 might clear
- if (level > ((sh2->sr >> 4) & 0x0f)) {
+ taken = (level > ((sh2->sr >> 4) & 0x0f));
+ if (taken) {
+ if (!nested_call) {
+ // not in memhandler, so handle this now (recompiler friendly)
+ // do this to avoid missing irqs that other SH2 might clear
int vector = sh2->irq_callback(sh2, level);
sh2_do_irq(sh2, level, vector);
}
+ else
+ sh2->test_irq = 1;
}
- else
- sh2->test_irq = 1;
+ return taken;
}
void sh2_internal_irq(SH2 *sh2, int level, int vector)
p[0] = sh2->pending_int_irq;
p[1] = sh2->pending_int_vector;
- p[2] = sh2->cycles_aim;
- p[3] = sh2->cycles_done;
}
void sh2_unpack(SH2 *sh2, const unsigned char *buff)
sh2->pending_int_irq = p[0];
sh2->pending_int_vector = p[1];
- sh2->cycles_aim = p[2];
- sh2->cycles_done = p[3];
}