32x: improve irq handling + few bugfixes

[picodrive.git] / pico / 32x / 32x.c

diff --git a/pico/32x/32x.c b/pico/32x/32x.c
index 320e6a4..e7779b9 100644 (file)
--- a/pico/32x/32x.c
+++ b/pico/32x/32x.c
@@ -4,13 +4,22 @@
 struct Pico32x Pico32x;
 SH2 sh2s[2];
 
-static void sh2_irq_cb(int id, int level)
+static int REGPARM(2) sh2_irq_cb(SH2 *sh2, int level)
 {
-  // diagnostic for now
-  elprintf(EL_32X, "%csh2 ack %d @ %08x", id ? 's' : 'm', level, sh2_pc(id));
+  if (sh2->pending_irl > sh2->pending_int_irq) {
+    elprintf(EL_32X, "%csh2 ack/irl %d @ %08x",
+      sh2->is_slave ? 's' : 'm', level, sh2->pc);
+    return 64 + sh2->pending_irl / 2;
+  } else {
+    elprintf(EL_32X, "%csh2 ack/int %d/%d @ %08x",
+      sh2->is_slave ? 's' : 'm', level, sh2->pending_int_vector, sh2->pc);
+    sh2->pending_int_irq = 0; // auto-clear
+    sh2->pending_level = sh2->pending_irl;
+    return sh2->pending_int_vector;
+  }
 }
 
-void p32x_update_irls(void)
+void p32x_update_irls(int nested_call)
 {
   int irqs, mlvl = 0, slvl = 0;
 
@@ -27,8 +36,8 @@ void p32x_update_irls(void)
   slvl *= 2;
 
   elprintf(EL_32X, "update_irls: m %d, s %d", mlvl, slvl);
-  sh2_irl_irq(&msh2, mlvl);
-  sh2_irl_irq(&ssh2, slvl);
+  sh2_irl_irq(&msh2, mlvl, nested_call);
+  sh2_irl_irq(&ssh2, slvl, nested_call);
   mlvl = mlvl ? 1 : 0;
   slvl = slvl ? 1 : 0;
   p32x_poll_event(mlvl | (slvl << 1), 0);
@@ -120,8 +129,10 @@ void PicoPower32x(void)
 void PicoUnload32x(void)
 {
   if (Pico32xMem != NULL)
-    free(Pico32xMem);
+    plat_munmap(Pico32xMem, sizeof(*Pico32xMem));
   Pico32xMem = NULL;
+  sh2_finish(&msh2);
+  sh2_finish(&ssh2);
 
   PicoAHW &= ~PAHW_32X;
 }
@@ -130,13 +141,40 @@ void PicoReset32x(void)
 {
   if (PicoAHW & PAHW_32X) {
     Pico32x.sh2irqs |= P32XI_VRES;
-    p32x_update_irls();
+    p32x_update_irls(0);
     p32x_poll_event(3, 0);
   }
 }
 
 static void p32x_start_blank(void)
 {
+  if (Pico32xDrawMode != PDM32X_OFF && !PicoSkipFrame) {
+    int offs, lines;
+
+    pprof_start(draw);
+
+    offs = 8; lines = 224;
+    if ((Pico.video.reg[1] & 8) && !(PicoOpt & POPT_ALT_RENDERER)) {
+      offs = 0;
+      lines = 240;
+    }
+
+    // XXX: no proper handling of 32col mode..
+    if ((Pico32x.vdp_regs[0] & P32XV_Mx) != 0 && // 32x not blanking
+        (Pico.video.reg[12] & 1) && // 40col mode
+        (PicoDrawMask & PDRAW_32X_ON))
+    {
+      int md_bg = Pico.video.reg[7] & 0x3f;
+
+      // we draw full layer (not line-by-line)
+      PicoDraw32xLayer(offs, lines, md_bg);
+    }
+    else if (Pico32xDrawMode != PDM32X_32X_ONLY)
+      PicoDraw32xLayerMdOnly(offs, lines);
+
+    pprof_end(draw);
+  }
+
   // enter vblank
   Pico32x.vdp_regs[0x0a/2] |= P32XV_VBLK|P32XV_PEN;
 
@@ -148,12 +186,14 @@ static void p32x_start_blank(void)
   }
 
   Pico32x.sh2irqs |= P32XI_VINT;
-  p32x_update_irls();
+  p32x_update_irls(0);
   p32x_poll_event(3, 1);
 }
 
 static __inline void run_m68k(int cyc)
 {
+  pprof_start(m68k);
+
 #if defined(EMU_C68K)
   PicoCpuCM68k.cycles = cyc;
   CycloneRun(&PicoCpuCM68k);
@@ -163,6 +203,8 @@ static __inline void run_m68k(int cyc)
 #elif defined(EMU_F68K)
   SekCycleCnt += fm68k_emulate(cyc+1, 0, 0);
 #endif
+
+  pprof_end(m68k);
 }
 
 // ~1463.8, but due to cache misses and slow mem
@@ -183,10 +225,18 @@ static __inline void run_m68k(int cyc)
     slice = SekCycleCnt - slice; /* real count from 68k */ \
     if (SekCycleCnt < SekCycleAim) \
       elprintf(EL_32X, "slice %d", slice); \
-    if (!(Pico32x.emu_flags & (P32XF_SSH2POLL|P32XF_SSH2VPOLL))) \
+    if (!(Pico32x.emu_flags & (P32XF_SSH2POLL|P32XF_SSH2VPOLL))) { \
+      pprof_start(ssh2); \
       sh2_execute(&ssh2, CYCLES_M68K2SH2(slice)); \
-    if (!(Pico32x.emu_flags & (P32XF_MSH2POLL|P32XF_MSH2VPOLL))) \
+      pprof_end(ssh2); \
+    } \
+    if (!(Pico32x.emu_flags & (P32XF_MSH2POLL|P32XF_MSH2VPOLL))) { \
+      pprof_start(msh2); \
       sh2_execute(&msh2, CYCLES_M68K2SH2(slice)); \
+      pprof_end(msh2); \
+    } \
+    pprof_start(dummy); \
+    pprof_end(dummy); \
   } \
 }