The problem is that %n in *printf functions require a format string
that is in a read only section. See man page.
So added __DATA_CONST segment and mapped rodata_section into this segment.
Also added __got to this segment.
Change maxprot of segments to the same values used by clang.
See: https://savannah.nongnu.org/bugs/?58606
and: mpfr-4.1.1/tests/tcmp_ui.c
The code '__builtin_constant_p ((i++, 7))' was not working.
I Fixed it in tccgen.c
I added a testcase in tests/tcctest.c. I also wanted to add a test like
'__builtin_constant_p ((10, 7))' but gcc needs -O1 for that to work.
clang (and now tcc) work as expected.
Fix for external functions as pointers in data section.
See testcase 119 and tccmacho.c in check_relocs.
Make bind/rebase code faster in bind_rebase_import.
- Move reloc check out of loop
- Because relocs are sorted we can do bind/rebase by page.
Change name head into seq in trie code.
Remove unused code in bind_rebase.
I removed the FIXME for generating trie code with working code.
I also fixed a problem where:
cc -g -c a.c; cc -o a a.o
created a bind/rebase error because the second cc did not use -g
and .debug sections where not checked correctly.
I also removed the elfinterp printout in tcc.c when
TCC_TARGET_MACHO is set.
- remove calls to "find_..." for stuff that we know to exist and where.
- rename find_section_create(s1,name,0) -> have_section(s1,name)
Also:
- call update_gnu_hash() from elf_output_file()
gnu_hasn() functions could be moved down into an already existing
!ELF_OBJ_ONLY clause, but in order to avoid too many diff lines
I didn't.
- avoid 'long' (elf_hash). sizeof (long) is host-dependent (4 or 8)
- remove unnecessary checks (for dynsym, versym).
Someone reading "if (dynsym == NULL) ..." must conclude that it
actually can happen under certain circumstances, or otherwise,
might conclude that the person who wrote that felt unsure what's
going on exactly.
arm64-gen.c:
TCC_TARGET_MACHO instead of __APPLE__ (to support cross-compilers
for the apple/M1 target)
Add --config-codesign option to run codesign on apple to sign executables.
See configure and Makefile
In tccmacho.c use codesign option to call codesign application.
Add build_version/source_version
Sort sections in __LINKEDIT the same way as llvm does.
Add simple support for trie code. Need some more attention.
Fix rebase/bind error.
Apple has a new object format that uses chained fixups.
I have implemented this with a configure option '--config-new_macho'
See configure and Makefile
tccmacho.c contains the biggest change.
I split the lazy_bind_rebase structure into lazy_bind and rebase for the
old format.
Under the macro CONFIG_NEW_MACHO there is the new macho format code.
In arm64-gen.c we do not need to push all registers on stack for
variadic functions. variadic parameters are pushed on stack for apple.
There is still one open isue. The export trie is empty.
This only effects dlsym when a local symbol is used.
tested on apple x86_64(10.5) and arm64(12.3).
The __atomic_test_and_set and __atomic_clear code was correct.
They needed locking.
Replaced to code with assembly code.
The changes are in include/stdatomic.h, lib/stdatomic.c, lib/atomic.S
Enabled tests/tests2/124_atomic_counter.c for apple again.
Also moved lib/fetch_and_add.S code to lib/atomic.S.
Removed lib/fetch_and_add.S
Adjusted lib/Makefile
The apple m1 uses position independent executables (pie).
I have implemented this in tccmacho.c
Apple also uses the stack different for var_args.
Also characters are signed instead of unsigned.
This is implemented in arm64-gen.c/tccdefs.h
Add bounds checking lib to lib/Makefile.
Add underscore support in lib/atomic.S and lib/fetch_and_add.S
Disable __clear_cache in lib/lib-arm64.c (Use system version).
I will try to fix this in future push.
Disable test_asm_call in tests/tcctest.c. Clang does not support @plt.
Also disable weak symbols test.
I will try to fix weak support in future push.
Disable tests/tests2/124_atomic_counter.c for 64BITS.
This is a bug in the atomic code and will be fixed in future push.
You have to use --dwarf configure option. stabs only works with -run.
tested on apple x86_64(10.5) and arm64(12.3).
Make code more compatible with gcc. Change
__atomic_store
__atomic_load
__atomic_exchange
__atomic_compare_exchange
Also add (include/stdatomic.h, lib/stdatomic.c):
atomic_thread_fence
atomic_signal_fence
atomic_is_lock_free
And gcc extensions (tcctok.h, tccgen.c, lib/stdatomic.c):
__atomic_fetch_nand
__atomic_and_fetch
__atomic_sub_fetch
__atomic_or_fetch
__atomic_xor_fetch
__atomic_and_fetch
__atomic_nand_fetch
Add new file lib/atomic.S with assembly code for __atomic_compare_exchange_n
for arm/arm64/riscv. Also update lib/Makefile.
Update testcode in 124_atomic_counter and 125_atomic_misc to test new functions.
Also update tests/tests2/Makefile to run tests on arm/arm64/riscv.
Bad assumption make bad things happen:
long d3;
asm(..."1:\tdec %3\n\t" : ... "=&c" (d3)
Which wants 'dec RDI' but did 'dec EDI' on _WIN64.
Also:
- tcctest.c: enable more asm tests for win64
- configure: show errors if any with 'gcc conftest.c'
- tccgen.c: remove decl0(x, y, z)
- 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
The script was expecting gcc-3.2 in a specific directory,
works only, when building tcc in the source directory
and creates >3200 files in /tmp (probably a SSD).
Now gcctestsuite.sh works much better.
* use TESTSUITE_PATH, to tell the script the location, where the actual
gcc.c-torture directory is
* work also, when tcc was build in a separate build directory.
use TCC_SOURCE_PATH, when guessing the tcc source directory does not work
* use RUNTIME_DIR to redirect compiler output
(default: XDG_RUNTIME_DIR, then /tmp)
* skip tests for features not implemented in tcc ( *_builtin_*, _Complex )
--
Regards, Detlef
Almost all systems use .gnu_hash so implement it for tcc.
For most of them it is the default.
tccelf.c:
- Add functions elf_gnu_hash/create_gnu_hash/update_gnu_hash
- Update new_section/sort_sections/fill_dynamic/tcc_output_elf/elf_output_file
Tested with setting .hash section to SHF_PRIVATE in elf_output_file.
This reverts commit 2507c71704.
Why crowd up search-paths for the normal native compiler with
all sort of invalid stuff. Why -UCONFIG_TRIPLET if it isn't
set at all for cross-compilers. Also, the patch still didn't
do anything useful "out of the box".
Instead I'd suggest to do something more simple and more effective.
See Makefile:
- set search paths for cross-compilers to /usr/<triplet> by default
- Install any built "xxx-tcc" and "xxx-libtcc1.a", even if not listed
with PROGS_CROSS/LIBTCC1_CROSS
- Support ELF-<target> = ... to set the elf interpreter
Some common gnu-triplets are supported by default
TRIPLET-i386 ?= i386-linux-gnu
TRIPLET-x86_64 ?= x86_64-linux-gnu
TRIPLET-arm ?= arm-linux-gnueabihf
TRIPLET-arm64 ?= aarch64-linux-gnu
TRIPLET-riscv64 ?= riscv64-linux-gnu
Other triplets can be given explicitly, for example like this:
$ make cross-arm-eabi TRIPLET-arm-eabi=arm-linux-gnueabi
$ sudo make install
(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 allow the tcc cross compilers to work as expected,
when tcc was build with '--enable-cross' and a simple config-extra.mak
(see the provided config-extra.mak.example).
Make sure, that cross development packages for libc are installed
Fixes also open bugs in various bug tracker. Example in debian: 940469
tcc: error: library 'c' not found
tcc: error: file 'crtn.o' not found
tcc: error: undefined symbol 'printf'
1) recursive types have no storage anymore, so a
static int (*p)[x];
declaration is just fine
2) since somewhen VT_VLA doesn't imply VT_ARRAY anymore, so we
now need to check VLA in at least one place before checking
test_lvalue.
((2) should probably be cleaned up again so that VLA does again imply
ARRAY)
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
- also simplify parse(_line)_comment() and parse_pp_string()
- fixes a continuation problem in strings (see tcctest.c)
- no differences in performance could be observed
161 insertions(+), 246 deletions(-), less 85 lines
- make only one function from previously four pieces
- use parse_pp_string() for the normal cases "..." and <...>
- use the sanity check for computed include as end-condition too.
- use 's1' instead of 'tcc_state' when possible
117 insertions(+), 165 deletions(-), less 48 lines
an expression like 'i*0', even though it's value is constant and
can be evaluated at compile time is not an integer constant expression,
and hence no null pointer constant, and therefore the conditional
operator doesn't select the other type.
if a switch is unreachable then so are the case labels.
Unlike normal labels they can't possibly be reached from not-yet
parsed code, so there's no reason to enable codegen again for those.
