X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=testpico%2Fsh2_main.c;h=303fe3f098b5f758f816ef52f664900f0c83b29b;hb=refs%2Fremotes%2Fgithub%2Fmaster;hp=6fe8ad7f018f5544920b3ce9c56d1254d889fcc1;hpb=5073ab5adb8157c35014505385575473284788df;p=megadrive.git

diff --git a/testpico/sh2_main.c b/testpico/sh2_main.c
index 6fe8ad7..333842c 100644
--- a/testpico/sh2_main.c
+++ b/testpico/sh2_main.c
@@ -3,9 +3,24 @@
 void spin(int loops);
 u16  read_frt(void);
 
+// vram map:
+// 00-0f: master irq counters (16bit)
+// 10-1f: slave ...
+
+// comm area map:
+// 00-01: cmd
+// 02:    error counter
+// 03:    handler input: no 32x irqsrc clear flag for both (if val == 0x5a)
+// 04-07: arg0/response
+// 08-0b: arg1
+// 0c: last_irq_vec_master
+// 0d: last_irq_vec_slave
+// 0e: exception_index_master
+// 0f: exception_index_slave
 static void do_cmd(u16 cmd, u16 r[6], u32 is_slave)
 {
     u32 *rl = (u32 *)r;
+    u8 *r8 = (u8 *)r;
     u32 a, d;
     u16 v;
 
@@ -50,15 +65,23 @@ static void do_cmd(u16 cmd, u16 r[6], u32 is_slave)
         write32(a, d);
         break;
     case CMD_GETGBR:
-        asm("stc gbr, %0" : "=r"(d));
+        asm volatile("stc gbr, %0" : "=r"(d));
         write32(&rl[4/4], d);
         break;
     case CMD_GETVBR:
-        asm("stc vbr, %0" : "=r"(d));
+        asm volatile("stc vbr, %0" : "=r"(d));
+        write32(&rl[4/4], d);
+        break;
+    case CMD_GETSR:
+        asm volatile("stc sr, %0" : "=r"(d));
         write32(&rl[4/4], d);
         break;
+    case CMD_SETSR:
+        d = read32(&rl[4/4]);
+        asm volatile("ldc %0, sr" :: "r"(d));
+        break;
     default:
-        r[2/2]++; // error
+        r8[2]++; // error
         mem_barrier();
         break;
     }