X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=cpu%2Fsh2%2Fcompiler.c;h=5b52694ab771933a6913b80512efd2abd6d9bd08;hb=ed4402a7dfd12dbbf34c547b438a671ae8114197;hp=6f08e7b8f2c9e577ddcea52abfa1ac21f6b68498;hpb=fcdefcf62cb71969b456a6f27688adbeb5890bb9;p=picodrive.git

diff --git a/cpu/sh2/compiler.c b/cpu/sh2/compiler.c
index 6f08e7b..5b52694 100644
--- a/cpu/sh2/compiler.c
+++ b/cpu/sh2/compiler.c
@@ -1,5 +1,9 @@
 /*
- * vim:shiftwidth=2:expandtab
+ * SH2 recompiler
+ * (C) notaz, 2009,2010
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
  *
  * notes:
  * - tcache, block descriptor, link buffer overflows result in sh2_translate()
@@ -155,7 +159,7 @@ typedef struct {
 
 // note: reg_temp[] must have at least the amount of
 // registers used by handlers in worst case (currently 4)
-#ifdef ARM
+#ifdef __arm__
 #include "../drc/emit_arm.c"
 
 static const int reg_map_g2h[] = {
@@ -427,6 +431,12 @@ static void REGPARM(3) *dr_lookup_block(u32 pc, int is_slave, int *tcache_id)
   return block;
 }
 
+static void *dr_failure(void)
+{
+  lprintf("recompilation failed\n");
+  exit(1);
+}
+
 static void *dr_prepare_ext_branch(u32 pc, SH2 *sh2, int tcache_id)
 {
 #if LINK_BRANCHES
@@ -1122,13 +1132,15 @@ static void emit_do_static_regs(int is_write, int tmpr)
 
 static void emit_block_entry(void)
 {
-  int arg0, arg1, arg2;
+  int arg0;
 
   host_arg2reg(arg0, 0);
+
+#if (DRC_DEBUG & 8) || defined(PDB)
+  int arg1, arg2;
   host_arg2reg(arg1, 1);
   host_arg2reg(arg2, 2);
 
-#if (DRC_DEBUG & 8) || defined(PDB)
   emit_do_static_regs(1, arg2);
   emith_move_r_r(arg1, CONTEXT_REG);
   emith_move_r_r(arg2, rcache_get_reg(SHR_SR, RC_GR_READ));
@@ -1292,10 +1304,16 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id)
     pc = branch_target_pc[i];
     if (base_pc <= pc && pc <= end_pc && !(OP_FLAGS(pc) & OF_DELAY_OP))
       branch_target_pc[tmp++] = branch_target_pc[i];
+
+    if (i == branch_target_count - 1) // workaround gcc 4.5.2 bug?
+      break;
   }
+
   branch_target_count = tmp;
-  memset(branch_target_ptr, 0, sizeof(branch_target_ptr[0]) * branch_target_count);
-  memset(branch_target_blkid, 0, sizeof(branch_target_blkid[0]) * branch_target_count);
+  if (branch_target_count > 0) {
+    memset(branch_target_ptr, 0, sizeof(branch_target_ptr[0]) * branch_target_count);
+    memset(branch_target_blkid, 0, sizeof(branch_target_blkid[0]) * branch_target_count);
+  }
 
   // -------------------------------------------------
   // 2nd pass: actual compilation
@@ -2698,7 +2716,7 @@ static void sh2_generate_utils(void)
   emith_call(sh2_translate);
   emit_block_entry();
   // XXX: can't translate, fail
-  emith_call(exit);
+  emith_call(dr_failure);
 
   // sh2_drc_test_irq(void)
   // assumes it's called from main function (may jump to dispatcher)
@@ -2960,13 +2978,12 @@ void sh2_drc_wcheck_da(unsigned int a, int val, int cpuid)
     1 + cpuid, SH2_DRCBLK_DA_SHIFT, 0xfff);
 }
 
-void sh2_execute(SH2 *sh2c, int cycles)
+int sh2_execute(SH2 *sh2c, int cycles)
 {
   int ret_cycles;
   sh2 = sh2c; // XXX
 
-  sh2c->cycles_aim += cycles;
-  cycles = sh2c->cycles_aim - sh2c->cycles_done;
+  sh2c->cycles_timeslice = cycles;
 
   // cycles are kept in SHR_SR unused bits (upper 20)
   // bit19 contains T saved for delay slot
@@ -2980,7 +2997,7 @@ void sh2_execute(SH2 *sh2c, int cycles)
   if (ret_cycles > 0)
     dbg(1, "warning: drc returned with cycles: %d", ret_cycles);
 
-  sh2c->cycles_done += cycles - ret_cycles;
+  return sh2c->cycles_timeslice - ret_cycles;
 }
 
 #if (DRC_DEBUG & 2)
@@ -3124,3 +3141,5 @@ void sh2_drc_finish(SH2 *sh2)
     hash_table = NULL;
   }
 }
+
+// vim:shiftwidth=2:expandtab