From 96c2c69bd9d9509d2e98738d35abf0eaf5f3fef3 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Wed, 16 Oct 2024 01:45:51 +0300
Subject: [PATCH] 3ds: try partial linking

---
 Makefile                                     | 12 +++++++---
 Makefile.libretro                            | 16 +++++++++----
 frontend/libretro-extern                     | 25 ++++++++++++++++++++
 frontend/{link.T => libretro-version-script} |  0
 jni/Android.mk                               |  2 +-
 5 files changed, 47 insertions(+), 8 deletions(-)
 create mode 100644 frontend/libretro-extern
 rename frontend/{link.T => libretro-version-script} (100%)

diff --git a/Makefile b/Makefile
index 9d278a54..2985dbee 100644
--- a/Makefile
+++ b/Makefile
@@ -470,14 +470,20 @@ frontend/revision.h: FORCE
 target_: $(TARGET)
 
 $(TARGET): $(OBJS)
-ifeq ($(STATIC_LINKING), 1)
-	$(AR) rcs $@ $(OBJS)
+ifeq ($(PARTIAL_LINKING), 1)
+	sed -e 's/.*/EXTERN(\0)/' frontend/libretro-extern > frontend/libretro-extern.T
+	$(LD) -o $(basename $(TARGET))1.o -r --gc-sections -T frontend/libretro-extern.T $^
+	$(OBJCOPY) --keep-global-symbols=frontend/libretro-extern $(basename $(TARGET))1.o $(basename $(TARGET)).o
+	$(AR) rcs $@ $(basename $(TARGET)).o
+else ifeq ($(STATIC_LINKING), 1)
+	$(AR) rcs $@ $^
 else
 	$(CC_LINK) $(CFLAGS) -o $@ $^ $(LDFLAGS) $(LDLIBS) $(EXTRA_LDFLAGS)
 endif
 
 clean: $(PLAT_CLEAN) clean_plugins
-	$(RM) $(TARGET) $(OBJS) $(TARGET).map frontend/revision.h
+	$(RM) $(TARGET) *.o $(OBJS) $(TARGET).map frontend/revision.h
+	$(RM) frontend/libretro-extern.T
 
 ifneq ($(PLUGINS),)
 plugins_: $(PLUGINS)
diff --git a/Makefile.libretro b/Makefile.libretro
index 76395207..e1fadde5 100644
--- a/Makefile.libretro
+++ b/Makefile.libretro
@@ -59,9 +59,12 @@ else ifeq ($(platform), psl1ght)
 else ifeq ($(platform), psp1)
   CC = psp-gcc$(EXE_EXT)
   AR = psp-ar$(EXE_EXT)
+  LD = psp-ld$(EXE_EXT)
 else ifeq ($(platform), vita)
   CC = arm-vita-eabi-gcc$(EXE_EXT)
   AR = arm-vita-eabi-ar$(EXE_EXT)
+  LD = arm-vita-eabi-ld$(EXE_EXT)
+  OBJCOPY = arm-vita-eabi-objcopy$(EXE_EXT)
 else ifeq ($(platform), ctr)
   ifeq ($(strip $(DEVKITARM)),)
   $(error "DEVKITARM env var is not set")
@@ -69,6 +72,8 @@ else ifeq ($(platform), ctr)
   CC = $(DEVKITARM)/bin/arm-none-eabi-gcc$(EXE_EXT)
   CXX = $(DEVKITARM)/bin/arm-none-eabi-g++$(EXE_EXT)
   AR = $(DEVKITARM)/bin/arm-none-eabi-ar$(EXE_EXT)
+  LD = $(DEVKITARM)/bin/arm-none-eabi-ld$(EXE_EXT)
+  OBJCOPY = $(DEVKITARM)/bin/arm-none-eabi-objcopy$(EXE_EXT)
 else ifeq ($(platform), libnx)
   export DEPSDIR := $(CURDIR)/
   ifeq ($(strip $(DEVKITPRO)),)
@@ -79,6 +84,7 @@ else ifeq ($(platform), libnx)
 else ifeq ($(platform), xenon)
   CC = xenon-gcc$(EXE_EXT)
   AR = xenon-ar$(EXE_EXT)
+  LD = xenon-ld$(EXE_EXT)
 else ifneq (,$(filter $(platform),ngc wii wiiu))
   ifeq ($(strip $(DEVKITPPC)),)
   $(error "DEVKITPPC env var is not set")
@@ -86,6 +92,7 @@ else ifneq (,$(filter $(platform),ngc wii wiiu))
   CC  = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
   CXX = $(DEVKITPPC)/bin/powerpc-eabi-g++$(EXE_EXT)
   AR  = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
+  LD  = $(DEVKITPPC)/bin/powerpc-eabi-ld$(EXE_EXT)
 else ifeq ($(platform), qnx)
   CC = qcc -Vgcc_ntoarmv7le
 else ifeq ($(platform), miyoo)
@@ -269,7 +276,7 @@ else ifeq ($(platform), libnx)
    NO_PTHREAD=1
    NO_MMAP := 1 # for psxmem
    LIBPTHREAD :=
-   STATIC_LINKING=1
+   PARTIAL_LINKING = 1
    BUILTIN_GPU = neon
    HAVE_NEON = 1
    DYNAREC = ari64
@@ -327,7 +334,7 @@ else ifeq ($(platform), vita)
 
 	DYNAREC = ari64
 	ARCH = arm
-	STATIC_LINKING = 1
+	PARTIAL_LINKING = 1
 	NO_PTHREAD=1
 	NO_POSIX_MEMALIGN := 1
 	HAVE_PHYSICAL_CDROM = 0
@@ -359,7 +366,8 @@ else ifeq ($(platform), ctr)
 	DYNAREC = ari64
 	ARCH = arm
 	HAVE_NEON = 0
-	STATIC_LINKING = 1
+	PARTIAL_LINKING = 1
+	WANT_ZLIB = 0
 	NO_POSIX_MEMALIGN := 1
 	NO_MMAP := 1 # for psxmem
 	HAVE_PHYSICAL_CDROM = 0
@@ -635,7 +643,7 @@ HAVE_NEON_ASM = $(shell $(CC) -E -dD $(CFLAGS) include/arm_features.h | grep -q
 endif
 ifeq ($(NO_UNDEF_CHECK)$(shell $(LD) -v 2> /dev/null | awk '{print $$1}'),GNU)
  ifeq (,$(findstring $(platform),win32))
- MAIN_LDFLAGS += -Wl,-version-script=frontend/link.T
+ MAIN_LDFLAGS += -Wl,-version-script=frontend/libretro-version-script
  endif
 MAIN_LDFLAGS += -Wl,--no-undefined
 endif
diff --git a/frontend/libretro-extern b/frontend/libretro-extern
new file mode 100644
index 00000000..c3c490c2
--- /dev/null
+++ b/frontend/libretro-extern
@@ -0,0 +1,25 @@
+retro_api_version
+retro_cheat_reset
+retro_cheat_set
+retro_deinit
+retro_get_memory_data
+retro_get_memory_size
+retro_get_region
+retro_get_system_av_info
+retro_get_system_info
+retro_init
+retro_load_game
+retro_load_game_special
+retro_reset
+retro_run
+retro_serialize
+retro_serialize_size
+retro_set_audio_sample
+retro_set_audio_sample_batch
+retro_set_controller_port_device
+retro_set_environment
+retro_set_input_poll
+retro_set_input_state
+retro_set_video_refresh
+retro_unload_game
+retro_unserialize
diff --git a/frontend/link.T b/frontend/libretro-version-script
similarity index 100%
rename from frontend/link.T
rename to frontend/libretro-version-script
diff --git a/jni/Android.mk b/jni/Android.mk
index bba07cc5..27459da8 100644
--- a/jni/Android.mk
+++ b/jni/Android.mk
@@ -235,7 +235,7 @@ LOCAL_CFLAGS        := $(COREFLAGS)
 LOCAL_C_INCLUDES    := $(ROOT_DIR)/include
 LOCAL_C_INCLUDES    += $(DEPS_DIR)/crypto
 LOCAL_C_INCLUDES    += $(EXTRA_INCLUDES)
-LOCAL_LDFLAGS       := -Wl,-version-script=$(FRONTEND_DIR)/link.T
+LOCAL_LDFLAGS       := -Wl,-version-script=$(FRONTEND_DIR)/libretro-version-script
 LOCAL_LDLIBS        := -lz -llog
 LOCAL_ARM_MODE      := arm
 
-- 
2.39.5