inline/parametrize rootcounter reads

makes rcnt1 hack impossible though, overclock PSX instead

1 files changed, 55 insertions, 0 deletions

diff --git a/libpcsxcore/new_dynarec/pcsxmem_inline.c b/libpcsxcore/new_dynarec/pcsxmem_inline.c
new file mode 100644
index 0000000..210ce0e
--- /dev/null
+++ b/libpcsxcore/new_dynarec/pcsxmem_inline.c
@@ -0,0 +1,55 @@
+/*
+ * (C) Gražvydas "notaz" Ignotas, 2011
+ *
+ * This work is licensed under the terms of GNU GPL version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+static int pcsx_direct_read(int type, u_int addr, int cc_adj, int cc, int rs, int rt)
+{
+  if ((addr & 0xfffff000) == 0x1f801000) {
+    u_int t;
+    switch (addr & 0xffff) {
+      case 0x1120: // rcnt2 count
+        if (rt < 0) goto dont_care;
+        if (cc < 0) return 0;
+        emit_readword((int)&rcnts[2].mode, HOST_TEMPREG);
+        emit_readword((int)&rcnts[2].cycleStart, rt);
+        emit_testimm(HOST_TEMPREG, 0x200);
+        emit_readword((int)&last_count, HOST_TEMPREG);
+        emit_sub(HOST_TEMPREG, rt, HOST_TEMPREG);
+        emit_add(HOST_TEMPREG, cc, HOST_TEMPREG);
+        if (cc_adj)
+          emit_addimm(HOST_TEMPREG, cc_adj, rt);
+        emit_shrne_imm(rt, 3, rt);
+        mov_loadtype_adj(type!=LOADW_STUB?type:LOADH_STUB, rt, rt);
+        goto hit;
+      case 0x1104:
+      case 0x1114:
+      case 0x1124: // rcnt mode
+        if (rt < 0) return 0;
+        t = (addr >> 4) & 3;
+        emit_readword((int)&rcnts[t].mode, rt);
+        emit_andimm(rt, ~0x1800, HOST_TEMPREG);
+        emit_writeword(HOST_TEMPREG, (int)&rcnts[t].mode);
+        mov_loadtype_adj(type, rt, rt);
+        goto hit;
+    }
+  }
+  else {
+    if (rt < 0)
+      goto dont_care;
+  }
+
+  return 0;
+
+hit:
+  assem_debug("pcsx_direct_read %08x end\n", addr);
+  return 1;
+
+dont_care:
+  assem_debug("pcsx_direct_read %08x dummy\n", addr);
+  return 1;
+}
+
+// vim:shiftwidth=2:expandtab