Remove a few dyngen and dyngen related code
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5914 c046a42c-6fe2-441c-8c8c-71466251a162
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aurel32
parent
955a7dd5e8
commit
86e840eef7
9
Makefile
9
Makefile
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@ -36,7 +36,7 @@ all: $(TOOLS) $(DOCS) recurse-all
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SUBDIR_RULES=$(patsubst %,subdir-%, $(TARGET_DIRS))
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subdir-%: dyngen$(EXESUF)
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subdir-%:
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$(MAKE) -C $(subst subdir-,,$@) all
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$(filter %-softmmu,$(SUBDIR_RULES)): libqemu_common.a
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@ -195,15 +195,10 @@ qemu-img$(EXESUF): qemu-img.o qemu-tool.o osdep.o $(BLOCK_OBJS)
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qemu-nbd$(EXESUF): qemu-nbd.o qemu-tool.o osdep.o $(BLOCK_OBJS)
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$(CC) $(LDFLAGS) -o $@ $^ -lz $(LIBS)
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# dyngen host tool
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dyngen$(EXESUF): dyngen.c
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$(HOST_CC) $(CFLAGS) $(CPPFLAGS) -o $@ $^
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clean:
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# avoid old build problems by removing potentially incorrect old files
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rm -f config.mak config.h op-i386.h opc-i386.h gen-op-i386.h op-arm.h opc-arm.h gen-op-arm.h
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rm -f *.o *.d *.a $(TOOLS) dyngen$(EXESUF) TAGS cscope.* *.pod *~ */*~
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rm -rf dyngen.dSYM
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rm -f *.o *.d *.a $(TOOLS) TAGS cscope.* *.pod *~ */*~
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rm -f slirp/*.o slirp/*.d audio/*.o audio/*.d
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$(MAKE) -C tests clean
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for d in $(TARGET_DIRS); do \
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@ -27,7 +27,6 @@ VPATH=$(SRC_PATH):$(TARGET_PATH):$(SRC_PATH)/hw
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CPPFLAGS=-I. -I.. -I$(TARGET_PATH) -I$(SRC_PATH) -MMD -MT $@ -MP -DNEED_CPU_H
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#CFLAGS+=-Werror
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LIBS=
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DYNGEN=../dyngen$(EXESUF)
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# user emulator name
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ifndef TARGET_ARCH2
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TARGET_ARCH2=$(TARGET_ARCH)
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@ -186,10 +185,6 @@ all: $(PROGS)
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# cpu emulator library
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LIBOBJS=exec.o kqemu.o translate-all.o cpu-exec.o\
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translate.o host-utils.o
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ifdef CONFIG_DYNGEN_OP
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exec.o: dyngen-opc.h
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LIBOBJS+=op.o
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endif
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# TCG code generator
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LIBOBJS+= tcg/tcg.o tcg/tcg-dyngen.o tcg/tcg-runtime.o
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CPPFLAGS+=-I$(SRC_PATH)/tcg -I$(SRC_PATH)/tcg/$(ARCH)
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@ -261,35 +256,15 @@ endif
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# libqemu
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ifdef CONFIG_DYNGEN_OP
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OPC_H = gen-op.h dyngen-opc.h op.h
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endif
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libqemu.a: $(LIBOBJS)
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rm -f $@
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$(AR) rcs $@ $(LIBOBJS)
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translate.o: translate.c cpu.h $(OPC_H)
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translate.o: translate.c cpu.h
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translate-all.o: translate-all.c cpu.h $(OPC_H)
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translate-all.o: translate-all.c cpu.h
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tcg/tcg.o: cpu.h $(OPC_H)
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tcg/tcg-dyngen.o: $(OPC_H)
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tcg/tcg-runtime.o: $(OPC_H)
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op.h: op.o $(DYNGEN)
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$(DYNGEN) -o $@ $<
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dyngen-opc.h: op.o $(DYNGEN)
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$(DYNGEN) -c -o $@ $<
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gen-op.h: op.o $(DYNGEN)
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$(DYNGEN) -g -o $@ $<
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op.o: op.c
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$(CC) $(OP_CFLAGS) $(CPPFLAGS) $(I386_CFLAGS) -c -o $@ $<
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tcg/tcg.o: cpu.h
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machine.o: machine.c
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$(CC) $(OP_CFLAGS) $(CPPFLAGS) -c -o $@ $<
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@ -299,7 +274,7 @@ machine.o: machine.c
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op_helper.o: op_helper.c
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$(CC) $(HELPER_CFLAGS) $(CPPFLAGS) $(CFLAGS) $(I386_CFLAGS) -c -o $@ $<
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cpu-exec.o: cpu-exec.c $(OPC_H)
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cpu-exec.o: cpu-exec.c
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$(CC) $(HELPER_CFLAGS) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
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#########################################################
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@ -807,7 +782,7 @@ endif
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$(CC) $(CPPFLAGS) -c -o $@ $<
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clean:
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rm -f *.o *.a *~ $(PROGS) gen-op.h dyngen-opc.h op.h nwfpe/*.o fpu/*.o
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rm -f *.o *.a *~ $(PROGS) nwfpe/*.o fpu/*.o
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rm -f *.d */*.d tcg/*.o
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install: all
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21
tcg/README
21
tcg/README
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@ -60,9 +60,8 @@ add_i32 t0, t1, t2 (t0 <- t1 + t2)
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- Basic blocks end after branches (e.g. brcond_i32 instruction),
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goto_tb and exit_tb instructions.
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- Basic blocks end before legacy dyngen operations.
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- Basic blocks start after the end of a previous basic block, at a
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set_label instruction or after a legacy dyngen operation.
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- Basic blocks start after the end of a previous basic block, or at a
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set_label instruction.
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After the end of a basic block, the content of temporaries is
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destroyed, but local temporaries and globals are preserved.
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@ -423,18 +422,7 @@ register.
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target, functions must be able to return 2 values in registers for
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64 bit return type.
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5) Migration from dyngen to TCG
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TCG is backward compatible with QEMU "dyngen" operations. It means
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that TCG instructions can be freely mixed with dyngen operations. It
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is expected that QEMU targets will be progressively fully converted to
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TCG. Once a target is fully converted to TCG, it will be possible
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to apply more optimizations because more registers will be free for
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the generated code.
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The exception model is the same as the dyngen one.
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6) Recommended coding rules for best performance
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5) Recommended coding rules for best performance
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- Use globals to represent the parts of the QEMU CPU state which are
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often modified, e.g. the integer registers and the condition
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@ -442,8 +430,7 @@ The exception model is the same as the dyngen one.
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- Avoid globals stored in fixed registers. They must be used only to
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store the pointer to the CPU state and possibly to store a pointer
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to a register window. The other uses are to ensure backward
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compatibility with dyngen during the porting a new target to TCG.
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to a register window.
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- Use temporaries. Use local temporaries only when really needed,
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e.g. when you need to use a value after a jump. Local temporaries
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