wanted by gdb to have global variables info on windows
Also:
tcc.h:
- move dwarf inline fns
- use dwarf as default for 64-bit platforms. GDB can't handle
locals info from stabs on 64-bit correctly (also not from gcc).
tccpe.c:
- use 's1' instead of 'pe->s1'
tccdbg.c:
- fix locals info problem on Windows where (unsigned long) s->value
is uint32_t and would not cast to long long correctly.
- tweak dwarf to have line info at begin of functions, otherwise
"gdb b main, r, n" would say "no line number info, single step..."
(see also objdump --dwarf=decodedline ...)
workflows/build.yml:
- win32/64: install mingw32/64 gcc on msys (because the default
gcc installed elsewhere seems to use ucrt, producing incompatible
fp printf formats.)
tccgen.c:
- cleanup funcs: save any lvalues from return expressions. Also use
get_temp_local_var() which however was causing a problem on i386
because its gfunc_call() removes the arguments from vstack and by
that defeats the 'in-use' tracking of get_temp_local_var(). Fixed by:
i386/arm/arm64/x86_64-gen.c:
- in gfunc_call(): save_regs before anything else, fixes
problems seen in arm64/i386
tccpp.c:
- allow arm asm specific use of '#' in macros
libtcc.c:
- organize -M options, and:
tccpe.c:
- move the subsystem option parsing from libtcc.c
tccelf.c:
- improved error handling in tcc_load_ldscript()
lib/atomic.S:
- TCC_TARGET_... not defined when building the lib
- endbrNN security feature not supported by TCC
tests/tests2/136_atomic_gcc_style.c:
- never use standard assert() in tests
Oviously what the patch wants is... on Windows, with
"tcc c:/dir/xyz.dll -run file"... pass the absolute
path of the dll to LoadLibrary() which can make sense
in situations.
Other changes in the patch to other platfurms seem to
have no effect. This reverts 52a9a541b0
except 2 lines in tccpe.c.
Also revert _Float16 patch a06c608625
As long as tcc does not really handle _Float16, we can just define
it in tccdefs.h.
Also move uint128_t to tccdefs.h for same reason.
Update github action (might fix random arm64 crashes)
libtcc.c:
- free 'elfint' string
- acceot -O and -Os
- accept -gstabs (to override dwarf when default)
- better -Wp,...
tccpp.c:
- #line cleanup
also warn with "extra tokens after directive"
tccgen.c & xxx_gen.c:
- force CPU flags to register earlier
tccelf.c:
- tcc_load_object: align size only for code sections
data/bss objects are always put with their specfic type align
(in decl_initializer_alloc())
x86/64 doesn't need aligned code
from c6afdff7ab
tccpe.c:
- enable dllimport for "_imp__<sym>" also from assembler
x86_64-gen.c & lib/libtcc1.c:
- simpler fneg without libtcc1 reference
tests2/134_double_to_signed.c:
- a tcc compiled by msvc won't pass this test
just clear s1->static_link before loading msvcrt etc.
Also:
- configure: get cc_version/name when making a cross compiler too
- configure: fix android triplets
- Makefile: remove CONFIG_TCC_CROSS, check TCC_TARGET_xxx instead
- libtcc.c: parse some linker option arguments more correctly
- tccelf.c: fix a versym problem with clang on android
- lib/Makefile, build-tcc.bat: bcheck.c now includes config.h
Put former NATIVE_DEFINES into config.h. Such tcc can be run
and tested directly from source more easily, like for example:
tcc -run tcc.c -B. -run test.c
Also:
- tccelf.c: cleanup
- tccpp.c: avoid stupid clang warning
- configure: reduce -Wno- switches
- tcc.h: inline wait/post_sem()
- tccpe.c: simplify import (assume STT_NOTYPE is function)
with -Wl,-oformat=binary, executable code should come first.
(for linux kernel image for example)
Also:
- simplify RELRO sections: create them as readonly, but add
SHF_WRITE flag later when needed (i.e. relocations do exist)
- tcc.h etc: exclude eh_frames on non-elf platforms
- tccelf.c:tcc_load_object_file(): don't load debug sections when
linking without -g (special dwarf case in relocate_section()
wont work when dwlo/hi were not initialized).
- tcc.c: avoid loop if something fails (ret < 0) without message
(while failing without message should not happen either)
- tccelf.c:tcc_load_alacarte: give message
- tccpp.c: treat '# 123xyz' in asm file as comment
- lib/Makefile: cleanup
- libtcc.c: tcc_add_library(): fallback to try filename as is
(also remove tcc_add_library_err())
- 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
- new LIBTCC API tcc_setjmp() to allow longjmps & signals
from compiled code back to libtcc per TCCState
- new LIBTCC API tcc_set_backtrace_func() to handle backtrace output
- move c/dtor/atexit stuff to runtime (lib/runmain.c)
- move bt-log.o into libtcc1.a
- add timeouts to github action (beware, it did happen to hang
infinitely in the signal handler at some point)
- 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
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()
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)
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.
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, ...)
- x86_64-link.c:
ignore relocation overflow to undefined (weak) symbols
- 104_inline.test:
test lower 32 bits only
- tccpe.c:
support -Wl,--image-base=... above the 32bit range
Sort sections in separate function to allow variable
calculatiion of needed program headers. Such execinstr
and relro cah have their own PT_LOAD header.
315 insertions(+), 370 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(-)
Currently used only with 'tcc_compile_sem' to protect
tcc_compile(), but can be used with other semaphores
Also fix deadlock when tcc_enter_state() is called
recursively for the same state, for example with
tcc_warning() from #pragma comment(option,"...")
Also:
- libtcc.c: error1(): use cstr_[v]printf()
- tcc.h: set TCC_USING_DOUBLE_FOR_LDOUBLE for macho-arm64
(rather than for macho-X86_64)
- tcc.h: define TCC_TARGET_MACHO on __APPLE__ by default
- tcc.h: cleanup TCCState, move DEFASM token stuff to tcctok.h
- tccgen.c: more static
- Makefile/tcc.c: review githash
- tccpe/tcctools: use read() instead of fgets() in pe_load_def()
(all files opened by tcc for reading are now read via 'int fd')
- configure/win32: don't preset CONFIG_TCCDIR (to allow to override it)
- tcc.c -bench: do not include output/run-time
libtcc.c: add -Wwrite-strings to -Wall
tccgen.c: ro float-consts, string-consts, ro arrays if base type is
tccpe.c: merge IAT with rodata
tccrun.c: mprotect rodata accordingly. free section data after copy
x86_64.c: do not use got for static data.
tcc -bench: show data.rw/ro
Probably STB_LOCAL should never get to put_got_entry(), and currently
it doesn't seem to happen (See "Hack Alarm" there)
Other files: use more ro-data in tinycc
Add myself to RELICENSING file
Use locking when writing tcov file
Fixed sometimes last line of function not shown
Merge tcc_tcov_add_file and tcc_add_tcov
Allow absolute file names
Count case labels with no code better
lib/tcov.c:
- can't be cross-compiled (needs stdio.h)
- can be included in libtcc1.a
Reason why bt-xxx.o/bcheck.o are linked separatly is because we
don't want then to linked into exe's and dlls at the same time.
I have implemented the -ftest-coverage option. It works a bit different
from the gcc version. It output .tcov text file which looks almost the
same as a gcov file after a executable/so file is run.
Add lib/tcov.c file
Modify Makefiles to compile/install it
Add -ftest-coverage option in tcc.c/tcc.h/tcc-doc.texi
Add code to tccelf.c/tccgen.c/tccpe.c
Add gen_increment_tcov to tcc.h/*gen.c
unrelated changes:
Add sigemptyset in tccrun.c
Fix riscv64-gen.c tok_alloc label size
- The compiler should not use these
- However tccrun.c & libtcc1.a files should use these
Also:
- use s1->loaded_dlls for loaded dlls instead of dlopens
- alpine musl: fully supported now and tested
- ./configure ...
--config-backtrace=no : disable backtraces
--config-bcheck=no : disable bcheck
- tests:dlltest: enable by default
- tccrun.c : simplify mmaps
- __builtin_alloca : always use asm-alias (instead of #define)
- tccpe.c : use write32le
- tccpe.c: commit "tidy support for helper function" created
STT_NOTYPE symbols and hence relied on ad-hoc detection which
didn't work for x86_64 (as reported by Christian Jullien)
- tccgen.c: However to be more safe the helper symbols are
now made STT_FUNC anyway (via new VT_ASM_FUNC).
Also:
- tcc.h: minor reorder
- riscv64-*, arm64-*, tccmacho.c: avoid some gcc format-warnings
(mingw-gcc complains about "%llx" being "unknown conversion",
although it does work since Vista or so)
- tcc.h: msvc doesn't grok __func__ (reverts previous commit)
- tccgen.c: fortify tcc against bogus code:
- n[sizeof({3;})]; // statement expression outside of function
- f(){"123"4}; // tokens with values following each other
(also, add "type defaults to int" warning for variables)
- tccpe.c: removed a check that caused BSS symbols not to be
exported. Whatever that check was meant to prevent.
- win32/build-tcc.bat: cmd.exe sometimes doesn't grok '-' in labels
- Revert "libtcc: no need to undef"
This reverts commit 2b7aa2a1e1.
- Revert "tcc.h libtcc.c: remove unused defines"
This reverts commit 985d963745.
The point of these "unused defines" is to be unused, that is
to remind people not to use malloc but please to "use_tcc_malloc",
instead.
from 43ae350390
and a3578379fb
Sorry, but this feature appears to be rather a personal
experiment than generically interesting for other people.
Also those "other people" always have some interest in
TCC staying simple.
One can still avoid the startup code from libtcc1.a simply
by providing __start explicitly.
While at it: Tidy tccpe.c:pe_add_runtime(), somewhat.
This allows for example this scenario:
- A dll to be linked with is specified in file.c, where file.c
and the dll exist in the same directory:
#pragma comment(lib, "txml")
#pragma comment(option, "-L{f}")
- tcc is called to run file.c from other, varying directories:
$ tcc -run some/dir/file.c <args...>
Note that tcc replaces {f} by the currently compiled file's
directory ('some/dir' in this example).
Also:
- tccgen.c: fix last commit for gen_cast.
tested on win32/64 to pass the tests when enabled
- libtcc.c :
let tcc define __leading_underscore if enabled
tcc_add_symbol() : add _ automatically
- tccelf.c : remove tcc_get_symbol_err(), find_c_sym()
currently symbol length is limited to 256 in several
places, so we can use a fixed local buffer for now as well.
- win32/lib/crtinit.c : new file for init/fini
- lib/*.S, tests7* : use __leading_underscore
- bt-log.c: this file wont work relibaly if compiled with gcc
from e640ed1aeb
Also:
- cleanup -std, -O, -pthread
- tcc.h:win32: use win32-type include paths even for cross
compilers (needed for loading tcc_predefs.h in cases)
- Makefile: simplify OSX .dylib clause
