d0p1/tcc-stupidos
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bellard 2001-12-02 21:44:40 +00:00
parent ebdec645a8
commit a88b855866
3 changed files with 29 additions and 39 deletions
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2
Makefile
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@ -11,7 +11,7 @@ LIBS=-ldl
CFLAGS+=-m386 -malign-functions=0 CFLAGS+=-m386 -malign-functions=0
DISAS=objdump -D -b binary -m i386 DISAS=objdump -D -b binary -m i386
INSTALL=install INSTALL=install
VERSION=0.9 VERSION=0.9.1
all: tcc all: tcc

49
README
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@ -5,7 +5,7 @@ Features:
-------- --------
- SMALL! You can compile and execute C code everywhere, for example on - SMALL! You can compile and execute C code everywhere, for example on
rescue disks (27KB for x86 TCC executable). rescue disks (29KB for x86 TCC executable).
- FAST! tcc generates optimized x86 code. No byte code - FAST! tcc generates optimized x86 code. No byte code
overhead. Compiles, assemble and link about 7 times faster than 'gcc overhead. Compiles, assemble and link about 7 times faster than 'gcc
@ -87,35 +87,17 @@ when doing 'make test'.
Exact differences with ANSI C: Exact differences with ANSI C:
----------------------------- -----------------------------
1) Preprocessor - Preprocessor: the preprocessor tokens are the same as C. It means
that in some rare cases, preprocessed numbers are not handled
- the preprocessor tokens are the same as C. It means that in some exactly as in ANSI C. This approach has the advantage of being
rare cases, preprocessed numbers are not handled exactly as in ANSI simpler and FAST!
C. This approach has the advantage of being simpler and FAST!
2) C language
- Cannot pass struct/union as value. Cannot assign struct/union (use
memcpy instead).
- Types: floating point numbers are not supported yet. - Types: floating point numbers are not supported yet.
- (BUG) 'char' and 'short' casts do not truncate correctly. - Bit fields are not supported.
- 'sizeof' may not work if too complex expression is given. - Linking: extern variables must appear in a referenced dll and cannot
appear in current source.
- bit fields are not supported.
- L'c' or L"string" for wide chars are parsed but not handled as wchar_t.
- Cannot initialize auto (=local) arrays with implicit size
(workaround: specificy exact size in array declaration). Cannot
initialize auto arrays with strings.
3) Linking
- extern variables must appear in a referenced dll and cannot appear
in current source.
Supported ANSI C extensions: Supported ANSI C extensions:
--------------------------- ---------------------------
@ -126,15 +108,20 @@ Supported ANSI C extensions:
- '__func__' is a string variable containing the current function name (ISOC99). - '__func__' is a string variable containing the current function name (ISOC99).
- variadic macros: __VA_ARGS__ can be used for function-like macros (ISOC99): - Variadic macros: __VA_ARGS__ can be used for function-like macros (ISOC99):
#define dprintf(level, __VA_ARGS__) printf(__VA_ARGS__). #define dprintf(level, __VA_ARGS__) printf(__VA_ARGS__).
- declarations can appear anywhere in a block (ISOC99). - Declarations can appear anywhere in a block (ISOC99).
- array and struct/union elements can be initialized in any order by - Array and struct/union elements can be initialized in any order by
using designators (.e. { [0].x = 1 }) (ISOC99). using designators (.e.g. { [0].x = 1 }) (ISOC99).
- binary digits can be entered ('0b101' instead of '5'). - Compound initializers are supported (e.g. int *p = (int []){ 1, 2,
3}) (ISOC99).
- '#!' at the start of a line is ignored to allow scripting.
- Binary digits can be entered ('0b101' instead of '5').
Technical Description: Technical Description:
--------------------- ---------------------

15
TODO
View file

@ -2,17 +2,20 @@ TODO list:
Critical: Critical:
- add structure assign.
- fix 'char' and 'short' casts.
- 0 is pointer - fix type compare
- fix L'' and L"" wide chars
- add message if external function or variable not found.
- function pointers to forward reference (patch code generator).
- add float/double support (should be as small as possible while being - add float/double support (should be as small as possible while being
usable for RISC code generator too). usable for RISC code generator too).
- 0 is pointer - fix type compare
- add message if external function or variable not found.
- To check: 'sizeof' may not work if too complex expression is given.
- fix 'char' and 'short' casts (in function parameters and in assignment).
- function pointers to forward reference (patch code generator).
Not critical: Not critical:
- fix multiple compound literals inits in blocks (ISOC99 normative
example - only relevant when using gotos! -> must add boolean
variable to tell if compound literal was already initialized).
- fix L"\x1234" wide string case (need to store them as ints ?) */
- fix preprocessor symbol redefinition - fix preprocessor symbol redefinition
- better constant opt (&&, ||, ?:) - better constant opt (&&, ||, ?:)
- add ELF executable and shared library output option (would be needed - add ELF executable and shared library output option (would be needed