From 56dc6ecb70e6fc76d32d6a7194acb273b76bfe0e Mon Sep 17 00:00:00 2001
From: David Guillen Fandos
Date: Mon, 8 Mar 2021 18:44:03 +0100
Subject: Remove libco

This removes libco and all the usages of it (+pthreads).
Rewired all dynarecs and interpreter to return after every frame so that
libretro can process events. This required to make dynarec re-entrant.

Dynarecs were updated to check for new frame on every update (IRQ, cycle
exhaustion, I/O write, etc). The performance impact of doing so should
be minimal (and definitely outweight the libco gains). While at it,
fixed small issues to get a bit more perf: arm dynarec was not idling
correctly, mips was using stack when not needed, etc.

Tested on PSP (mips), OGA (armv7), Linux (x86 and interpreter). Not
tested on Android though.
---
 Makefile | 11 -----------
 1 file changed, 11 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index e846b3a..fa6ae4f 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,6 @@ FRONTEND_SUPPORTS_RGB565=1
 FORCE_32BIT_ARCH=0
 HAVE_MMAP=0
 HAVE_MMAP_WIN32=0
-USE_LIBCO=1
 
 UNAME=$(shell uname -a)
 
@@ -391,7 +390,6 @@ else ifeq ($(platform), gcw0)
 	SHARED := -shared -nostdlib -Wl,--version-script=link.T
 	fpic := -fPIC
 	CFLAGS += -fomit-frame-pointer -ffast-math -march=mips32 -mtune=mips32r2 -mhard-float
-	USE_LIBCO = 0
 
 # Windows
 else
@@ -430,12 +428,6 @@ OBJECTS := $(SOURCES_C:.c=.o) $(SOURCES_ASM:.S=.o)
 
 DEFINES := -DHAVE_STRINGS_H -DHAVE_STDINT_H -DHAVE_INTTYPES_H -D__LIBRETRO__ -DINLINE=inline -Wall
 
-ifeq ($(USE_LIBCO), 1)
-DEFINES += -DUSE_LIBCO
-else
-LDFLAGS += -lpthread
-endif
-
 ifeq ($(HAVE_DYNAREC), 1)
 DEFINES += -DHAVE_DYNAREC
 endif
@@ -491,9 +483,6 @@ endif
 cpu_threaded.o: cpu_threaded.c
 	$(CC) $(CFLAGS) -Wno-unused-variable -Wno-unused-label $(OPTIMIZE_SAFE) $(INCDIRS) -c -o $@ $<
 
-libco/libco.o: libco/libco.c
-	$(CC) $(INCFLAGS) $(CFLAGS) $(OPTIMIZE) -c  -o $@ $<
-
 %.o: %.S
 	$(CC) $(ASFLAGS) $(CFLAGS) $(OPTIMIZE) -c -o $@ $<
 
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