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Fixed bug #855 Ludwig Nussel 2009-10-18 06:31:52 PDT an mprotect call was added to fix bug 528. However that results in a buffer that allows writing and code execution. Ie the no-execute security features of modern operating systems are defeated this way. Two mprotect calls are needed. One to make the buffer executable but not writeable when done and another one to make the buffer writeable again if the content needs to be changed.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 18 Oct 2009 17:31:37 +0000
parents 3b8ac3d311a2
children
line wrap: on
line source

# This Makefile is for building the CELL BE SPU libs
# libfb_writer_spu.so, libyuv2rgb_spu.so, libbilin_scaler_spu.so

# Toolchain
SPU_GCC=/usr/bin/spu-gcc
PPU_GCC=/usr/bin/gcc
PPU_EMBEDSPU=/usr/bin/embedspu
PPU_AR=/usr/bin/ar
PPU_LD=/usr/bin/ld
INSTALL=/usr/bin/install

SPU_CFLAGS=-W -Wall -Winline -Wno-main -I. -I /usr/spu/include -I /opt/cell/sdk/usr/spu/include -finline-limit=10000 -Winline -ftree-vectorize -funroll-loops -fmodulo-sched -ffast-math -fPIC -O2

# Usually /usr/lib, depending on your distribution
PREFIX=/usr/lib


all: libfb_writer_spu.a libfb_writer_spu.so \
				libyuv2rgb_spu.so libyuv2rgb_spu.a \
				libbilin_scaler_spu.so libbilin_scaler_spu.a


# fb_writer
fb_writer_spu-embed.o: fb_writer.c spu_common.h
	$(SPU_GCC) $(SPU_CFLAGS) -o fb_writer_spu fb_writer.c -lm
	$(PPU_EMBEDSPU) -m32 fb_writer_spu fb_writer_spu fb_writer_spu-embed.o

libfb_writer_spu.so: fb_writer_spu-embed.o
	$(PPU_LD) -o libfb_writer_spu.so -shared -soname=libfb_writer_spu.so fb_writer_spu-embed.o

libfb_writer_spu.a: fb_writer_spu-embed.o
	$(PPU_AR) -qcs libfb_writer_spu.a fb_writer_spu-embed.o


# yuv2rgb_converter
yuv2rgb_spu-embed.o: yuv2rgb_converter.c spu_common.h
	$(SPU_GCC) $(SPU_CFLAGS) -o yuv2rgb_spu yuv2rgb_converter.c -lm
	$(PPU_EMBEDSPU) -m32 yuv2rgb_spu yuv2rgb_spu yuv2rgb_spu-embed.o

libyuv2rgb_spu.a: yuv2rgb_spu-embed.o
	$(PPU_AR) -qcs libyuv2rgb_spu.a yuv2rgb_spu-embed.o

libyuv2rgb_spu.so: yuv2rgb_spu-embed.o
	$(PPU_LD) -o libyuv2rgb_spu.so -shared -soname=libyuv2rgb_spu.so yuv2rgb_spu-embed.o


# bilin_scaler
bilin_scaler_spu-embed.o: bilin_scaler.c spu_common.h
	$(SPU_GCC) $(SPU_CFLAGS) -o bilin_scaler_spu bilin_scaler.c -lm
	$(PPU_EMBEDSPU) -m32 bilin_scaler_spu bilin_scaler_spu bilin_scaler_spu-embed.o

libbilin_scaler_spu.a: bilin_scaler_spu-embed.o
	$(PPU_AR) -qcs libbilin_scaler_spu.a bilin_scaler_spu-embed.o

libbilin_scaler_spu.so: bilin_scaler_spu-embed.o
	$(PPU_LD) -o libbilin_scaler_spu.so -shared -soname=libbilin_scaler_spu.so bilin_scaler_spu-embed.o

install: libfb_writer_spu.a libfb_writer_spu.so \
				libyuv2rgb_spu.so libyuv2rgb_spu.a \
				libbilin_scaler_spu.so libbilin_scaler_spu.a
	$(INSTALL) -c -m 0755 libfb_writer_spu.so $(PREFIX)/.
	$(INSTALL) -c -m 0655 libfb_writer_spu.a $(PREFIX)/.
	$(INSTALL) -c -m 0755 libyuv2rgb_spu.so $(PREFIX)/.
	$(INSTALL) -c -m 0655 libyuv2rgb_spu.a $(PREFIX)/.
	$(INSTALL) -c -m 0755 libbilin_scaler_spu.so $(PREFIX)/.
	$(INSTALL) -c -m 0655 libbilin_scaler_spu.a $(PREFIX)/.


uninstall: $(PREFIX)/libfb_writer_spu.so $(PREFIX)/libfb_writer_spu.a \
		$(PREFIX)/libyuv2rgb_spu.so $(PREFIX)/libyuv2rgb_spu.a \
		$(PREFIX)/libbilin_scaler_spu.so $(PREFIX)/libbilin_scaler_spu.a
	rm -f $(PREFIX)/libfb_writer_spu.a
	rm -f $(PREFIX)/libfb_writer_spu.so
	rm -f $(PREFIX)/libyuv2rgb_spu.so
	rm -f $(PREFIX)/libyuv2rgb_spu.a
	rm -f $(PREFIX)/libbilin_scaler_spu.so
	rm -f $(PREFIX)/libbilin_scaler_spu.a


clean:
	rm -f bilin_scaler_spu-embed.o libbilin_scaler_spu.so libbilin_scaler_spu.a bilin_scaler_spu
	rm -f yuv2rgb_spu-embed.o libyuv2rgb_spu.so libyuv2rgb_spu.a yuv2rgb_spu
	rm -f fb_writer_spu-embed.o libfb_writer_spu.so libfb_writer_spu.a fb_writer_spu