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bellard
parent
e9315f499b
commit
840d197e87
48
Makefile
48
Makefile
@ -9,11 +9,15 @@ CFLAGS_P=$(CFLAGS) -pg -static -DCONFIG_TCC_STATIC
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LIBS_P=
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CFLAGS+=-m386 -malign-functions=0
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CFLAGS+=-DCONFIG_TCC_PREFIX=\"$(prefix)\"
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DISAS=objdump -d
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INSTALL=install
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VERSION=0.9.7
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VERSION=0.9.8
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all: tcc
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# run local version of tcc with local libraries and includes
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TCC=./tcc -B. -I.
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all: tcc libtcc1.o bcheck.o tcc-doc.html
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# auto test
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@ -27,19 +31,19 @@ test.ref: tcctest.ref
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./tcctest.ref > $@
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test.out: tcc tcctest.c
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./tcc -I. tcctest.c > $@
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$(TCC) tcctest.c > $@
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run: tcc tcctest.c
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./tcc -I. tcctest.c
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$(TCC) tcctest.c
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# iterated test2 (compile tcc then compile tcctest.c !)
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test2: tcc tcc.c tcctest.c test.ref
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./tcc -I. tcc.c -I. tcctest.c > test.out2
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$(TCC) tcc.c -B. -I. tcctest.c > test.out2
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@if diff -u test.ref test.out2 ; then echo "Auto Test2 OK"; fi
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# iterated test3 (compile tcc then compile tcc then compile tcctest.c !)
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test3: tcc tcc.c tcctest.c test.ref
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./tcc -I. tcc.c -I. tcc.c -I. tcctest.c > test.out3
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$(TCC) tcc.c -B. -I. tcc.c -B. -I. tcctest.c > test.out3
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@if diff -u test.ref test.out3 ; then echo "Auto Test3 OK"; fi
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# memory and bound check auto test
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@ -48,14 +52,14 @@ BOUNDS_FAIL= 2 5 7 9 11 12 13
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btest: boundtest.c tcc
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@for i in $(BOUNDS_OK); do \
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if ./tcc -b boundtest.c $$i ; then \
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if $(TCC) -b boundtest.c $$i ; then \
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/bin/true ; \
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else\
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echo Failed positive test $$i ; exit 1 ; \
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fi ;\
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done ;\
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for i in $(BOUNDS_FAIL); do \
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if ./tcc -b boundtest.c $$i ; then \
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if $(TCC) -b boundtest.c $$i ; then \
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echo Failed negative test $$i ; exit 1 ;\
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else\
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/bin/true ; \
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@ -78,17 +82,27 @@ ex3: ex3.c
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# Native Tiny C Compiler
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tcc_g: tcc.c i386-gen.c bcheck.c Makefile
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tcc_g: tcc.c i386-gen.c bcheck.c tcctok.h libtcc.h Makefile
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gcc $(CFLAGS) -o $@ $< $(LIBS)
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tcc: tcc_g
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strip -s -R .comment -R .note -o $@ $<
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install: tcc
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# TinyCC runtime libraries
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libtcc1.o: libtcc1.c
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gcc -O2 -Wall -c -o $@ $<
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bcheck.o: bcheck.c
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gcc -O2 -Wall -c -o $@ $<
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install: tcc libtcc1.o bcheck.o
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$(INSTALL) -m755 tcc $(prefix)/bin
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$(INSTALL) tcc.1 $(prefix)/man/man1
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mkdir -p $(prefix)/lib/tcc
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mkdir -p $(prefix)/lib/tcc/include
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$(INSTALL) -m644 libtcc1.o bcheck.o $(prefix)/lib/tcc
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$(INSTALL) -m644 stdarg.h stddef.h float.h stdbool.h \
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tcclib.h $(prefix)/lib/tcc
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tcclib.h $(prefix)/lib/tcc/include
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clean:
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rm -f *~ *.o tcc tcc1 tcct tcc_g tcctest.ref *.bin *.i ex2 \
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@ -131,7 +145,7 @@ libtcc_test: libtcc_test.c libtcc.a
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# targets for development
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%.bin: %.c tcc
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./tcc -g -o $@ -I. $<
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$(TCC) -g -o $@ $<
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$(DISAS) $@
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instr: instr.o
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@ -140,6 +154,10 @@ instr: instr.o
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instr.o: instr.S
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gcc -O2 -Wall -g -c -o $@ $<
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# documentation
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tcc-doc.html: tcc-doc.texi
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texi2html -monolithic -number $<
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FILE=tcc-$(VERSION)
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tar:
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@ -148,8 +166,10 @@ tar:
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( cd /tmp ; tar zcvf ~/$(FILE).tar.gz \
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$(FILE)/Makefile $(FILE)/Makefile.uClibc \
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$(FILE)/README $(FILE)/TODO $(FILE)/COPYING \
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$(FILE)/Changelog $(FILE)/tcc-doc.html \
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$(FILE)/tcc.c $(FILE)/i386-gen.c $(FILE)/bcheck.c \
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$(FILE)/Changelog $(FILE)/tcc-doc.texi $(FILE)/tcc-doc.html \
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$(FILE)/tcc.1 \
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$(FILE)/tcc.c $(FILE)/i386-gen.c $(FILE)/tcctok.h \
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$(FILE)/bcheck.c $(FILE)/libtcc1.c \
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$(FILE)/il-opcodes.h $(FILE)/il-gen.c \
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$(FILE)/elf.h $(FILE)/stab.h $(FILE)/stab.def \
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$(FILE)/stddef.h $(FILE)/stdarg.h $(FILE)/stdbool.h $(FILE)/float.h \
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32
README
32
README
@ -75,38 +75,6 @@ when doing 'make test'.
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Please read tcc-doc.html to have all the features of TCC.
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Technical Description:
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---------------------
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This is not my first C compiler (see my 'fbcc' compiler) but it
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contains the first C preprocessor I wrote. The project started as a
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joke to make the smallest C compiler. Then I expanded it torward
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ISOC99 compliance. This C compiler is particular because each feature
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was added while trying to be as simple and compact as possible. For
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example, no intermediate structure is used to store code or
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expressions.
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The TCC code generator directly generates linked binary code. It is
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rather unusual these days (see gcc for example which generates text
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assembly), but it allows to be very fast and surprisingly not so
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complicated.
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The TCC code generator is register based. It means that it could even
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generate not so bad code for RISC processors. On x86, three temporary
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registers are used. When more registers are needed, one register is
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flushed in a new local variable.
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Constant propagation is done for all operations. Multiplications and
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divisions are optimized to shifts when appropriate. Comparison
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operators are optimized by maintaining a special cache for the
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processor flags. &&, || and ! are optimized by maintaining a special
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'jump target' value. No other jump optimization is currently performed
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because it would require to store the code in a more abstract fashion.
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The types are stored in a single 'int' variable (see VT_xxx
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constants). It was choosen in the first stages of development when tcc
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was much simpler. Now, it may not be the best solution.
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License:
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-------
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16
TODO
16
TODO
@ -1,10 +1,14 @@
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TODO list:
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Critical:
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- better local symbol handling (needed for other targets)
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- relocate .stabs information
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- fix -I search order (same as gcc)
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- dynamic hash table resizing
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- better section generator (suppress mmaps)
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- relocate .bounds section content
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- add size info on all ELF symbols
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- add separate symbol/offset handling
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- better local variables handling (needed for other targets)
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- handle void (__attribute__() *ptr)()
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- optimize slightly bound checking when doing addition + dereference.
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- better section generator (suppress some mmaps).
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- To check: bound checking and float/long long/struct copy code
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- To fix: 'sizeof' generate code if too complex expression is given.
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- fix bound check code with '&' on local variables (currently done
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@ -21,11 +25,9 @@ Not critical:
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- fix multiple compound literals inits in blocks (ISOC99 normative
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example - only relevant when using gotos! -> must add boolean
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variable to tell if compound literal was already initialized).
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- add more bounds checked functions (strcpy, ...)
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- fix L"\x1234" wide string case (need to store them as utf8 ?)
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- fix preprocessor symbol redefinition
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- better constant opt (&&, ||, ?:)
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- add ELF executable and shared library output option (would be needed
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for completness!).
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- add portable byte code generator and interpreter for other
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unsupported architectures.
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- C++: variable declaration in for, minimal 'class' support.
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69
tcc-doc.texi
69
tcc-doc.texi
@ -36,8 +36,8 @@ generation (@xref{libtcc}).
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@section Quick start
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@example
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usage: tcc [-c] [-o outfile] [-bench] [-Idir] [-Dsym[=val]] [-Usym]
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[-g] [-b] [-llib] [-shared] [-static]
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usage: tcc [-c] [-o outfile] [-Bdir] [-bench] [-Idir] [-Dsym[=val]] [-Usym]
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[-g] [-b] [-Ldir] [-llib] [-shared] [-static]
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[--] infile1 [infile2... --] [infile_args...]
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@end example
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@ -99,8 +99,12 @@ Generate an object file (@samp{-o} option must also be given).
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@item -o outfile
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Put object file, executable, or dll into output file @file{outfile}.
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@item -Bdir
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Set the path where the tcc internal libraries can be found (default is
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@code{prefix}@file{/lib/tcc}.
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@item -bench
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Output compilation statistics
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Output compilation statistics.
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@end table
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Preprocessor options:
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@ -108,8 +112,9 @@ Preprocessor options:
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@table @samp
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@item -Idir
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Specify an additionnal include path. The default ones are:
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@file{/usr/include}, @code{prefix}@file{/lib/tcc/include} (@code{prefix}
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is usually @file{/usr} or @file{/usr/local}).
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@file{/usr/local/include}, @code{prefix}@file{/lib/tcc/include} and
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@file{/usr/include} (@code{prefix} is usually @file{/usr} or
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@file{/usr/local}).
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@item -Dsym[=val]
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Define preprocessor symbol 'sym' to
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@ -138,13 +143,18 @@ that the generated code is slower and bigger in this case.
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Linker options:
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@table @samp
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@item -Ldir
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Specify an additionnal static library path for the @samp{-l} option. The
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default library paths are @file{/usr/local/lib}, @file{/usr/lib} and @file{/lib}.
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@item -lxxx
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Dynamically link your program with library
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libxxx.so. Standard library paths are checked, including those
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specified with LD_LIBRARY_PATH.
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Link your program with dynamic library libxxx.so or static library
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libxxx.a. The library is searched in the paths specified by the
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@samp{-L} option.
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@item -shared
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Generate a shared library instead of an executable (@samp{-o} option must also be given).
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Generate a shared library instead of an executable (@samp{-o} option
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must also be given).
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@item -static
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Generate a statically linked executable (default is a shared linked
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@ -314,6 +324,47 @@ indicate that you use TCC.
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@end itemize
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@chapter TinyCC Linker
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@section ELF file generation
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TCC can directly output relocatable ELF files (object files),
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executable ELF files and dynamic ELF libraries without relying on an
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external linker.
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Dynamic ELF libraries are not working correctly yet because the C
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compiler does not generate position independant code (PIC) code.
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TCC linker cannot currently suppress unused object code. But TCC
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will soon integrate a novel feature not found in GNU tools: unused code
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will be suppressed at the function or variable level, provided you only
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use TCC to compile your files.
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ELF symbol hash table is currently fixed.
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@section ELF file loader
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TCC can load ELF object files, archives (.a files) and dynamic
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libraries (.so).
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Currently, the @code{stabs} debug information is not relocated.
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@section GNU Linker Scripts
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Because on many Linux systems some dynamic libraries (such as
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@file{/usr/lib/libc.so}) are in fact GNU ld link scripts (horrible!),
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TCC linker also support a subset of GNU ld scripts.
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The @code{GROUP} and @code{FILE} commands are supported.
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Example from @file{/usr/lib/libc.so}:
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@example
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/* GNU ld script
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Use the shared library, but some functions are only in
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the static library, so try that secondarily. */
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GROUP ( /lib/libc.so.6 /usr/lib/libc_nonshared.a )
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@end example
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@node bounds
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@chapter TinyCC Memory and Bound checks
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