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* ARC: Update ulpsVineet Gupta2021-04-142-25/+29
| | | | | | Needed after 43576de04afc6 Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* Reduce the statically linked startup code [BZ #23323]Florian Weimer2021-02-251-4/+3
| | | | | | | | | | | | | | | | | | | It turns out the startup code in csu/elf-init.c has a perfect pair of ROP gadgets (see Marco-Gisbert and Ripoll-Ripoll, "return-to-csu: A New Method to Bypass 64-bit Linux ASLR"). These functions are not needed in dynamically-linked binaries because DT_INIT/DT_INIT_ARRAY are already processed by the dynamic linker. However, the dynamic linker skipped the main program for some reason. For maximum backwards compatibility, this is not changed, and instead, the main map is consulted from __libc_start_main if the init function argument is a NULL pointer. For statically linked binaries, the old approach based on linker symbols is still used because there is nothing else available. A new symbol version __libc_start_main@@GLIBC_2.34 is introduced because new binaries running on an old libc would not run their ELF constructors, leading to difficult-to-debug issues.
* ARC: nofpu: Regenerate ulpsVineet Gupta2021-01-171-5/+6
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* ARC: Regenerate ulpsVineet Gupta2021-01-081-4/+4
| | | | | | | | | | | | | Reinstate pass for FAIL: math/test-double-cosh FAIL: math/test-double-sinh FAIL: math/test-float32x-cosh FAIL: math/test-float32x-sinh FAIL: math/test-float64-cosh FAIL: math/test-float64-sinh FAIL: math/test-ldouble-cosh FAIL: math/test-ldouble-sinh
* Update copyright dates with scripts/update-copyrightsPaul Eggert2021-01-0248-48/+48
| | | | | | | | | | | | | | | | I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
* nptl: Move stack list variables into _rtld_globalFlorian Weimer2020-11-161-2/+0
| | | | | | | | | Now __thread_gscope_wait (the function behind THREAD_GSCOPE_WAIT, formerly __wait_lookup_done) can be implemented directly in ld.so, eliminating the unprotected GL (dl_wait_lookup_done) function pointer. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* aarch64: enforce >=64K guard size [BZ #26691]Szabolcs Nagy2020-10-021-0/+3
| | | | | | | | | | | | | | | | | | | | | | | There are several compiler implementations that allow large stack allocations to jump over the guard page at the end of the stack and corrupt memory beyond that. See CVE-2017-1000364. Compilers can emit code to probe the stack such that the guard page cannot be skipped, but on aarch64 the probe interval is 64K by default instead of the minimum supported page size (4K). This patch enforces at least 64K guard on aarch64 unless the guard is disabled by setting its size to 0. For backward compatibility reasons the increased guard is not reported, so it is only observable by exhausting the address space or parsing /proc/self/maps on linux. On other targets the patch has no effect. If the stack probe interval is larger than a page size on a target then ARCH_MIN_GUARD_SIZE can be defined to get large enough stack guard on libc allocated stacks. The patch does not affect threads with user allocated stacks. Fixes bug 26691.
* ARC: Build InfrastructureVineet Gupta2020-07-107-0/+276
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* ARC: ABI listsVineet Gupta2020-07-104-0/+1414
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* ARC: Linux ABIVineet Gupta2020-07-101-0/+32
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* ARC: hardware floating point supportVineet Gupta2020-07-1020-0/+711
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* ARC: math soft float supportVineet Gupta2020-07-105-0/+203
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* ARC: Atomics and Locking primitivesVineet Gupta2020-07-101-0/+69
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* ARC: Thread Local Storage supportVineet Gupta2020-07-105-0/+240
| | | | | | This includes all 4 TLS addressing models Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* ARC: startup and dynamic linking codeVineet Gupta2020-07-107-0/+591
| | | | | | Code for C runtime startup and dynamic loading including PLT layout. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* ARC: ABI ImplementationVineet Gupta2020-07-1017-0/+547
This code deals with the ARC ABI. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-17 18:16:38 +0000