From 69c22514b0257b85189cf1acb5f20d62edf23749 Mon Sep 17 00:00:00 2001
From: kub <derkub@gmail.com>
Date: Tue, 27 Oct 2020 18:05:49 +0100
Subject: [PATCH] sh2 drc, fixes for cache handling on arm and mips cpus

---
 cpu/drc/emit_arm.c  | 2 +-
 cpu/drc/emit_mips.c | 9 ++++-----
 cpu/sh2/compiler.c  | 4 ++--
 3 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/cpu/drc/emit_arm.c b/cpu/drc/emit_arm.c
index c354acb7..9a89ab30 100644
--- a/cpu/drc/emit_arm.c
+++ b/cpu/drc/emit_arm.c
@@ -1247,7 +1247,7 @@ static inline void emith_pool_adjust(int tcache_offs, int move_offs)
 } while (0)
 
 #define host_instructions_updated(base, end, force) \
-	do { if (force) __builtin___clear_cache(base, end); } while (0)
+	do { if (force) emith_update_add(base, end); } while (0)
 
 #define host_arg2reg(rd, arg) \
 	rd = arg
diff --git a/cpu/drc/emit_mips.c b/cpu/drc/emit_mips.c
index 51509ea9..ed7c178f 100644
--- a/cpu/drc/emit_mips.c
+++ b/cpu/drc/emit_mips.c
@@ -1573,11 +1573,10 @@ static NOINLINE void host_instructions_updated(void *base, void *end, int force)
 {
 	int step, tmp;
 	asm volatile(
-	"	bal	0f;" // needed to allow for jr.hb
-	"	b	3f;"
-
-	"0:	rdhwr	%2, $1;"
-	"	beqz	%2, 2f;"
+	"	rdhwr	%2, $1;"
+	"	bal	0f;"			// needed to allow for jr.hb:
+	"0:	addiu	$ra, $ra, 3f-0b;"	//   set ra to insn after jr.hb
+	"	beqz	%2, 3f;"
 
 	"1:	synci	0(%0);"
 	"	sltu	%3, %0, %1;"
diff --git a/cpu/sh2/compiler.c b/cpu/sh2/compiler.c
index beb67095..fbabbd91 100644
--- a/cpu/sh2/compiler.c
+++ b/cpu/sh2/compiler.c
@@ -816,13 +816,13 @@ static void dr_block_link(struct block_entry *be, struct block_link *bl, int emi
         emith_jump_patch(jump, bl->blx, &jump);
         emith_jump_at(bl->blx, be->tcache_ptr);
         host_instructions_updated(bl->blx, bl->blx + emith_jump_at_size(),
-            ((uintptr_t)bl->blx & 0x0f) + emith_jump_at_size()-1 > 0x0f);
+            ((uintptr_t)bl->blx & 0x1f) + emith_jump_at_size()-1 > 0x1f);
       }
     } else {
       printf("unknown BL type %d\n", bl->type);
       exit(1);
     }
-    host_instructions_updated(jump, jump + jsz, ((uintptr_t)jump & 0x0f) + jsz-1 > 0x0f);
+    host_instructions_updated(jump, jump + jsz, ((uintptr_t)jump & 0x1f) + jsz-1 > 0x1f);
   }
 
   // move bl to block_entry
-- 
2.39.2