From 4af2edc365222c3cfc8a511b9be71405310b41ea Mon Sep 17 00:00:00 2001
From: kub <derkub@gmail.com>
Date: Sun, 2 Jun 2024 07:53:04 +0000
Subject: [PATCH] 32x, fixes for comparing cycles

---
 cpu/sh2/sh2.h     | 2 +-
 pico/32x/32x.c    | 4 ++--
 pico/32x/memory.c | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/cpu/sh2/sh2.h b/cpu/sh2/sh2.h
index bb8debe02..95c5658fb 100644
--- a/cpu/sh2/sh2.h
+++ b/cpu/sh2/sh2.h
@@ -54,7 +54,7 @@ typedef struct SH2_
 #define SH2_IN_DRC      (1 << 7)	// DRC in use
 	unsigned int	state;
 	uint32_t	poll_addr;
-	int		poll_cycles;
+	unsigned int	poll_cycles;
 	int		poll_cnt;
 // NB MUST be a bit unused in SH2 SR, see also cpu/sh2/compiler.c!
 #define SH2_NO_POLLING	(1 << 10)	// poll detection control
diff --git a/pico/32x/32x.c b/pico/32x/32x.c
index 6e2cb4bce..00239a112 100644
--- a/pico/32x/32x.c
+++ b/pico/32x/32x.c
@@ -583,10 +583,10 @@ void sync_sh2s_lockstep(unsigned int m68k_target)
   unsigned int mcycles;
   
   mcycles = msh2.m68krcycles_done;
-  if (ssh2.m68krcycles_done < mcycles)
+  if (CYCLES_GT(mcycles, ssh2.m68krcycles_done))
     mcycles = ssh2.m68krcycles_done;
 
-  while (mcycles < m68k_target) {
+  while (CYCLES_GT(m68k_target, mcycles)) {
     mcycles += STEP_LS;
     sync_sh2s_normal(mcycles);
   }
diff --git a/pico/32x/memory.c b/pico/32x/memory.c
index 7d964f20c..1d17f9f62 100644
--- a/pico/32x/memory.c
+++ b/pico/32x/memory.c
@@ -72,7 +72,7 @@ static int m68k_poll_detect(u32 a, u32 cycles, u32 flags)
   // support polling on 2 addresses - seen in Wolfenstein
   int match = (a - m68k_poll.addr1 <= 3 || a - m68k_poll.addr2 <= 3);
 
-  if (match && cycles - m68k_poll.cycles <= 64 && !SekNotPolling)
+  if (match && CYCLES_GT(64, cycles - m68k_poll.cycles) && !SekNotPolling)
   {
     // detect split 32bit access by same cycle count, and ignore those
     if (cycles != m68k_poll.cycles && ++m68k_poll.cnt >= POLL_THRESHOLD) {
@@ -160,7 +160,7 @@ void NOINLINE p32x_sh2_poll_event(u32 a, SH2 *sh2, u32 flags, u32 m68k_cycles)
     elprintf_sh2(sh2, EL_32X, "state: %02x->%02x", sh2->state,
       sh2->state & ~flags);
 
-    if (sh2->m68krcycles_done < m68k_cycles && !(sh2->state & SH2_STATE_RUN))
+    if (CYCLES_GT(m68k_cycles, sh2->m68krcycles_done) && !(sh2->state & SH2_STATE_RUN))
       sh2->m68krcycles_done = m68k_cycles;
 
     pevt_log_sh2_o(sh2, EVT_POLL_END);