- tccgen.c: cleanup switch data etc. after errors (*)
- tccpe.c: faster get_dllexports (*)
- tccpe.c: support -Wl,-e[ntry]=... (*)
- libtcc.c: win32: use ANSI functions (GetModuleFileNameA etc.)
- tccrun.c: be nice to tcc-0.9.26 ("struct/enum already defined")
- tccpp.c: be nice to tcc-0.9.27's va_start/end macros
(*) suggested by Robert Schlicht
https://lists.gnu.org/archive/html/tinycc-devel/2024-03/msg00012.html
- LIBTCCAPI int tcc_set_backtrace_func(void *ud, ...)
accept opaque user data pointer,
- tcc -vv -run... : show section info
- use memalign() to allocate runtime memory
- printline_/dwarf : pass output to parent function
- tccpe.c : fix -nostdlib -run
- --config-backtrace=no : make it work again
- abort with notice when tcc_relocate() is called with the
former two-step method
- support backtrace & bcheck not only with tcc_run() but also
for directly called functions from tcc_get_symbol(); enable
witn 'tcc_set_options("-bt/-b");'
- move struct rt_context and debug sections into compiled code
for TCC_OUTPUT_MEMORY also
- protect access (g_rc) with semaphore
Also:
- add armv7/aarch4/riscv64 github tests (qemu emulated)
- win32/build-tcc.bat: build cross compiler only with -x
- remove TOK_NOSUBST, mark the token itself instead
- get_tok_str(); mask out SYM_FIELD & update uses
- next(): optimize (~5% faster with tcc -E)
- tok_flags: remove some redundancy
- parse_define(): do not remove spaces around '##' and after '#'
and mark macros with '##' as MACRO_JOIN to avoid unnecessary
call to macro_twosharps(mstr):
- next_nomacro(): removed, next_nomacro1(): renamed to next_nomacro()
- next_argstream(): cleanup & new function peek_file()
- macro_subst_tok(): handle special macros (__DATE__ etc.)
like normal macros if they are #defined
- -DPP_DEBUG : more structured output
- pp_error(): better preprocessor expression error message
- tcctok.h: sort basic keywords (somehow)
- testspp/Makefile: generate .expect with 'make testspp.##+'
- tcc.c: tcc -E -o file : put unixy LFs also on windows
removed second argument for tcc_relocate(s). previous
'TCC_RELOCATE_AUTO' is now default and only behavior.
Rationale:
In the past, the option to compile into memory provided by the
user was introduced because only one TCCState could exist at a time.
This is no longer a limitation. As such it is also possible now to
keep any number of compiled code snippets around together with their
state in order to run them as needed.
- Also
- LIBTCCAPI tcc_get_error_func/opaque() removed
- tccrun/SELINUX: switch rx/rw mappings such that rx comes first
(risc64-link.c:relocate_plt() does not like got < plt)
- tcc_relocate_ex(): free local symbols and obsolete sections
to reduce memory after tcc_relocate()
When using libtcc it's reasonable to be able to use the application's
memory allocator for all allocations, including tcc_new(), and including
#define MEM_DEBUG
Ideally the allocator would be stored in the TCCState, like TCCErrorFunc.
That would imply a new API tcc_new_with_allocator(), but more importantly
would require all uses of tcc_malloc(x) to be changed to s->tcc_malloc(x).
That's a non-starter in my book.
Instead I refactored the memory management code so that all allocations
flow through tcc_realloc(). Which simply calls a function pointer, the
default value of which is the previous tcc_realloc().
It then becomess trivial to install a new allocator with the new function:
LIBTCCAPI void tcc_set_realloc(TCCReallocFunc realloc);
The resulting code adds the trivial cost of an additional function call
per allocation/free. It also doesn't distinguish between malloc failure
and realloc failure, but since both just fprintf then exit() that seems
unimportant to me.
On the plus side the preprocessor magic is much more clear. The diffs
don't hightlight that, but take a look at the result to see if you agree.
All tests passed on my x86 linux box.
tccpp.c:
- revert "Preprocessor fix + new testcase"
Fix was not a fix and nobody could understand the test.
This reverts 6379f2ee76
- better fix and add new test (pp/18.c)
tccgen.c:
- remove global variables 'in_sizeof', 'constant_p'
- rework comma expression (gexpr())
- merge func/data 'alias_target' codes
(See 08c777053c)
- move call to do_Static_assert()
- better error: "expression expected before '%s'"
- fix "statement after label"
- remove unnecessary second parameter to block()
- remove unnecessary call to decl()
- revert changes to old C89 test file
See 7f0a28f6ca
tccelf.c:
- rework "...make undefined global symbol STT_NOTYPE"
(See f44060f8fc)
- move tccelf_add_crtbegin() from libtcc.c
tcctest:
- unfix K&R fix (keep old look of K&R functions)
tccrun.c:
- exit(0) returns 0
libtcc.c:
- move #defines for -dumpmachine
- more explicit error "file not found"
(as opposed to error while loading file)
tccpe.c, x86_64-gen.c, i386-asm.c, tccasm.c:
- use R_X86_64_PLT32 for functions on x86_64-win32
tccdefs.h
- empty #defines for _Nonnull, __has_builtin(), etc.
configure:
- Simpler "macOS .dylib ... VERSION letters."
(See 6b967b1285)
Makefile:
- macOS version also
- add cross searchpaths for packages
build.yml:
- disable codesign on macos-11 (doesn't seem to work)
The testcases 22_floating_point and 24_math_library did not work with
make tcov-test
Add -lm for these in tests/tests2/Makefile
gcc -fanalyzer complains about tcc_malloc and tcc_realloc because
malloc(0) and realloc(ptr, 0) is not tested correctly.
On windows, create a .pdb file with option "-g.pdb"
Such executables created by tcc can be debugged with
"ollydbg" or "x64dbg"
This currently relies on the 3rd party tool cv2pdb from
https://github.com/rainers/cv2pdb
which again relies on
mspdbsrv.exe mspdbcore.dll msobj80.dll mspdb80.dll
from a MSVC installation.
cv2pdb.exe + the ms* files may be put in the path or in the
same directory as tcc.exe.
libtcc.c:
- revert "Small patch to allow..." (someone's personal easteregg)
(see da3a763e97)
- check return value from macho_load_tbd/dylib
tcc.c:
- remove help for "not yet implemented" option
tccelf.c:
- check PIE's for "unresolved symbols"
tccgen.c:
- avoid int->double->int cast
(see a46372e910)
- fix constant propagation with pseudo long doubles
(must mask out VT_LONG from type)
- cleanup find_field() (again)
tccpp.c:
- disallow strings and double constants in #if expressions
win32/include/uchar.h:
- change file mode
In order to detect a "same file" faster, this makes one
restriction to the feature: the basenames are required to
match at least (as in "test.h" and "dir/../test.h")
Also remove obsolete 'pp_once' (cached includes do not persist
across compilations anymore anyway)
This rewrites commits
30fd24abd44e363a1728
3 files changed, 38 insertions(+), 74 deletions(-)
avoid memory leaks with lost CStrings on stack after errors.
tccpp.c:
- use/abuse static Cstring tokcstr where possible
tccgen.c:
- use/abuse static Cstring initstr where possible
tcc.h/libtcc.a:
- add 'stk_data' array to track memory pointer on stack
- add macros stk_push/pop() and cstr_new/free_s()
tccasm.c:
- use that
- use char[16] instead of char* for op.constraint
This avoids 'exit(1)' with errors outside of compilation
(nasty in particular with libtcc usage)
As a sideeffect multiple errors can be seen for linker
errors (such as undefined symbols, relocation errors, ...)
Value 0 and values >2GB where printed wrong during tests with yarpgen (v1)
Starting the output with a hashtag make it compatible to TAP
--
Regards ... Detlef
I have a testfile created by YARPGen (seed=9), which displayed
a negative bss size without this patch.
* tcc needs also a bigger VSTACK_SIZE (i used 512)
--
bye bye ... Detlef
With these option I can now built several packages without problem.
There are a lot of options we can add so I tried to implement the
minumum.
Add the following options:
dynamiclib same as -shared
flat_namespace default/ignored
two_levelnamespace ignored
undefined default/ignored
install_name name of dynmic lib
compatibility_version version dynamic lib
current_version version version dynamic lib
-Wl options:
all_load same as whole-archive
force_load same as whole-archive with lib
single_module ignored
(As long as it is in the default install location and was not
moved elsewhere into the library search path manually)
Also:
- libtcc.c:
- error1(): show correct line with "In file included from ..."
- support "tcc -Bxxx -vv"
- tcc_new()/tcc_compile(): Don't create elf sections for tcc -E
- tccdbg.c:
- tcc -E -g : revert 1de025c13a
Let's keep things simple, everybody understands 'do_debug'
and dState is set by tcov too (but no debug sections).
- tccgen.c:
- avoid the extra parameter for gind()
(from c3e3a07ed4)
- vla func params: use skip_or_save_block() and enable
VT_LVAL (see 313855c232)
- cleanup nocode_wanted a bit
- tccelf.c:
- tccelf_end_file(): don't try to translate zero-sym relocs
(seems to happen with asm "jmp 0x1000")
- version_add(): do not make "ld-linux.so" DT_NEEDED
This fixes the bug that "tcc -gdwarf ..."
still creates the stab debug infos,
when tcc was build without using DWARF debug infos by default
(configure option: --dwarf=x)
--
Regards ... Detlef
The parameter is stored in tccstate, but nothing more.
Used by multiple software packages.
Current tested example is OpenWatcom-v2
--
bye bye ... Detlef
On an armeabi-v7a device (phone) in the termux app with
clang & make installed this passes all the tests.
Can be used as a cross compiler to create "native apps" as well.
Example 'config-extra.mak' for the cross arm-eabi-tcc:
SYSROOT = <path_to_android_ndk...>/sysroot/usr
TRIPLET = arm-linux-androideabi
ANDRVER = 32
ROOT-arm-eabi = $(SYSROOT)
CRT-arm-eabi = {R}/lib/$(TRIPLET)/$(ANDRVER)
LIB-arm-eabi = {B};{R}/lib/$(TRIPLET)/$(ANDRVER);{R}/lib/$(TRIPLET)
INC-arm-eabi = {B}/lib/include;{R}/include/$(TRIPLET);{R}/include
DEF-arm-eabi = -DTCC_TARGET_ARM -DTCC_ARM_VFP -DTCC_ARM_EABI
DEF-arm-eabi += -DTARGETOS_ANDROID -DCONFIG_TCC_PIE -DCONFIG_NEW_DTAGS
DEF-arm-eabi += -DCONFIG_TCC_ELFINTERP=\"/system/bin/linker\"
# on unix replace ';' by ':'.
$ ./configure && make cross-arm-eabi && make install
Allows to create dynamic executables, using the code path
for TCC_OUTPUT_DLL but add an .interp header (plus a FLAGS_1
entry in the dynamic section to make 'readelf' say "PIE")
Introduces TCC_OUTPUT_DYN as alias for TCC_OUTPUT_DLL.
There is no runtime option, only one to configure:
./configure --config-pie
100 insertions(+), 76 deletions(-)
... rather than from tccdir. Also allows to load cross
versions of bcheck.o etc. (if we would build them which
we currently don't).
18 insertions(+), 24 deletions(-)
libtcc.c:
- integrate find_dllref loop into tcc_add_dllref()
tccelf.c:
- make sure a DT_NEEDED tag is put for versions even
when the dll was not previously loaded.
Related commit 4c82b00342
48 insertions(+), 77 deletions(-)
Better avoid global variables, at least in new code.
tccdbg.c hopefully should be logically identical to the
former parts in tccgen/elf.c (s1 tccstate added in some
places)
tccelf.c: dwarf linkage seems special per dwarf rather
than special per target.
/* Use "-g" as alias for "-g1". Use "-g0" to disable debug */
So not using -g is now the alias for -g0 ?!?
This reverts commit 8759b2581d.
This reverts commit 3ce7bc6efc.
This reverts commit 5fb582ab7f.
This reverts commit aea68dbb40.
This reverts commit fa9c31c3db.
This reverts commit b3bebdb20a.
This reverts commit ecf8e5a00e.
This reverts commit fe6b5c08dc.
This reverts commit e2e5377e7b.
This reverts commit 1cd7998905.
The new gcc12 release does not support stabs any more.
This was a good reason to add support for dwarf.
The stabs code still works and is used if configure option --dwarf
is not used.
Tested on x86_64, i386, arm, arm64, riscv64 with dwarf-5.
Some debuggers may not support dwarf-5. Try using older dwarf versions
i that case.
The tccmacho.c code probably need some support for dwarf.
arm-gen.c, arm64-gen.c, i386-gen.c, riscv64-gen.c, x86_64-gen.
- fix get_sym_ref symbol size
arm-link.c, arm64-link.c, i386-link.c, riscv64-link.c, x86_64-link.c
- add R_DATA_32U
libtcc.c:
- parse -gdwarf option
tcc.c:
- add dwarf option
tcc.h:
- add dwarf option and sections
tccelf.c:
- init dwarf sections
- avoid adding sh_addr for dwarf sections
- remove dwarf relocs for output dll
- add dwarf sections for tccrun
tccgen.c:
- add dwarf defines + global data
- add dwarf_* functions
- mix dwarf code with stabs code
- a trick is used to emit function name in .debug_line section so
only this section has to be parsed instead of .debug_info and
.debug_abbrev.
- fix init debug_modes
tccrun.c:
- add dwarf sections in rt_context
- init them in tcc_run
- add new dwarf code rt_printline_dwarf to find file/function
dwarf.h:
- New file
tcc-doc.texi:
- document dwarf
configure:
- add dwarf option
lib/Makefile
- change -gstabs into -gdwarf
lib/bt-exe.c, tests/tests2/Makefile, tests/tests2/126_bound_global:
- Add __bound_init call
- Add new testcase to test it
Some headers and source code change macros and
implementation, when __OPTIMIZE_SIZE__ is defined.
This does not change our generated code.
Signed-off-by: Detlef Riekenberg <wine.dev@web.de>
With this code, we can compile more projects,
who expect gcc or clang as compiler. (-std=gnu11 used in Makefiles)
As a further extension, it would be easy to disable gcc extensions
Signed-off-by: Detlef Riekenberg <wine.dev@web.de>
grischka