search for: preinit_array

...ction more isolated than the gold or bfd linkers. For example, readelf -l applied to the "same" executable linked with those three linkers reveals the following under "Section to Segment mapping": lld: 05 .data .got.plt .bss gold: 03 .eh_frame .init_array .fini_array .preinit_array .dynamic .got .got.plt .data .bss bfd: 05 .eh_frame .preinit_array .init_array .fini_array .dynamic .got .got.plt .data .bss This separation seems to result in lld creating two LOAD RW segments whenever gold or bfd would create only one. For example, also from readelf -l output: LOAD...

...gnu.linkonce.s2.*) } - .sbss2 : { *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*) } - .eh_frame_hdr : { *(.eh_frame_hdr) } - /* Adjust the address for the data segment. We want to adjust up to - the same address within the page on the next page up. */ - . = ALIGN(8192); - /* Ensure the __preinit_array_start label is properly aligned. We - could instead move the label definition inside the section, but - the linker would then create the section even if it turns out to - be empty, which isn't pretty. */ - . = ALIGN(32 / 8); - PROVIDE (__preinit_array_start = .); - .preinit_arr...

...AT(__rodata_lma) { - HIDDEN(__rodata_start = .); - *(.rodata) - *(.rodata.*) - HIDDEN(__rodata_end = .); - } - - . = ALIGN(4); - - HIDDEN(__ctors_vma = .); - HIDDEN(__ctors_lma = __ctors_vma + __text_lma - __text_vma); - .ctors : AT(__ctors_lma) { - HIDDEN(__ctors_start = .); - KEEP (*(SORT(.preinit_array*))) - KEEP (*(SORT(.init_array*))) - KEEP (*(SORT(.ctors*))) - HIDDEN(__ctors_end = .); - } - - HIDDEN(__dtors_vma = .); - HIDDEN(__dtors_lma = __dtors_vma + __text_lma - __text_vma); - .dtors : AT(__dtors_lma) { - HIDDEN(__dtors_start = .); - KEEP (*(SORT(.fini_array*))) - KEEP (*(SORT(.dtor...

....exception_ranges : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) } + /* Thread Local Storage sections */ + .tdata : + { + PROVIDE_HIDDEN (__tdata_start = .); + *(.tdata .tdata.* .gnu.linkonce.td.*) + } + .tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) } + .preinit_array : + { + PROVIDE_HIDDEN (__preinit_array_start = .); + KEEP (*(.preinit_array)) + PROVIDE_HIDDEN (__preinit_array_end = .); + } + .init_array : + { + PROVIDE_HIDDEN (__init_array_start = .); + KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*))) +...

...gcc-4.9 -std=gnu99 -fsanitize=address -o conftest -fno-omit-frame-pointer -O0 -g -Wall -pedantic -mtune=native -I/usr/local/include -L/usr/local/lib conftest.c -ldl -lm -L/usr/lib/gcc/x86_64-linux-gnu/4.8 -lgfortran -lm -lquadmath >&5 /usr/lib/gcc/x86_64-linux-gnu/4.9/libasan_preinit.o:(.preinit_array+0x0): undefined reference to `__asan_init_v3' /tmp/cchWOhDV.o: In function `_GLOBAL__sub_I_00099_0__main': /home/mdowle/R/Rtrunk/conftest.c:113: undefined reference to `__asan_init_v3' collect2: error: ld returned 1 exit status configure:23682: $? = 1 configure: failed program was: |...

....exception_ranges : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) } + /* Thread Local Storage sections */ + .tdata : + { + PROVIDE_HIDDEN (__tdata_start = .); + *(.tdata .tdata.* .gnu.linkonce.td.*) + } + .tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) } + .preinit_array : + { + PROVIDE_HIDDEN (__preinit_array_start = .); + KEEP (*(.preinit_array)) + PROVIDE_HIDDEN (__preinit_array_end = .); + } + .init_array : + { + PROVIDE_HIDDEN (__init_array_start = .); + KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*))) +...

...s should be kept in the final output even if GC judges that it could be discarded. Perhaps, at this moment, it would suffice to provide an option to specify which sections must be kept. Additionally, perhaps the ELF reader or writer could always keep the .init{.*,_array}, .fini{.*,_array} and preinit_array sections. -- Evandro Menezes Austin, TX emenezes at codeaurora.org Qualcomm Innovation Center, Inc is a member of the Code Aurora Forum On 10/01/12 21:06, Sid Manning wrote: > > I committed a patch to update the ReaderELF.cpp that, in light of some > recent changes in...

...--- com32/lib/malloc.c | 1 - 3 files changed, 4 insertions(+), 27 deletions(-) delete mode 100644 com32/lib/init.h diff --git a/com32/lib/elf32.ld b/com32/lib/elf32.ld index ddf6e04..16d10a3 100644 --- a/com32/lib/elf32.ld +++ b/com32/lib/elf32.ld @@ -75,17 +75,6 @@ SECTIONS { KEEP (*(.preinit_array)) } - .init_array : - { - KEEP (*(SORT(.init_array.*))) - KEEP (*(.init_array)) - } - .fini_array : - { - KEEP (*(.fini_array)) - KEEP (*(SORT(.fini_array.*))) - } - .ctors : { __ctors_start = .; @@ -93,6 +82,8 @@ SECTIONS KEEP (*(.ctors))...

Hi, I noticed that klibc started crashing on 64-bit MIPS and in my quest to fix the bug I got a bit carried away and fixed a few other things as well. Here are various miscellaneous MIPS patches, although the first patch is the important one. Thanks, James *** BLURB HERE *** James Cowgill (5): mips64: compile with -mno-abicalls mips: use -Ttext-segment when linking shared library

...gnu.linkonce.s2.*) } + .sbss2 : { *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*) } + .eh_frame_hdr : { *(.eh_frame_hdr) } + /* Adjust the address for the data segment. We want to adjust up to + the same address within the page on the next page up. */ + . = ALIGN(8192); + /* Ensure the __preinit_array_start label is properly aligned. We + could instead move the label definition inside the section, but + the linker would then create the section even if it turns out to + be empty, which isn't pretty. */ + . = ALIGN(32 / 8); + PROVIDE (__preinit_array_start = .); + .preinit_arr...

> Static runtime will only intercept calls from the main executable, but > not from any libraries. This may work for simple standalone programs, > but you may run into puzzling failures. What type of failures do you mean? Does the symbol mismatch break assumptions in the ASan runtime? It's easy to imagine, for example, ASan missing use-after-free bugs because the call to free() is

From: Sylvain Gault <sylvain.gault at gmail.com> These patches basically remove unused linker scripts and port a change that was made to an unused script. Those are to be applied on top of the gcc 5 bug fixes as they would conflict otherwise. Sylvain Gault (4): diag/mbr: fix dependency to linker script Remove unused linker scripts core: Make symbols defined in linker script HIDDEN

For the same reason we use shared runtime on OSX. We intercept libc calls by declaring a function with the same name in the sanitizer runtime library. Glibc loader puts main executable early in the symbol lookup order, which lets us interpose symbols from shared libraries with symbols from statically linked sanitizer runtime. Android (and AFAIK most other platforms) does not allow that, which is

...gnu.linkonce.s2.*) } + .sbss2 : { *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*) } + .eh_frame_hdr : { *(.eh_frame_hdr) } + /* Adjust the address for the data segment. We want to adjust up to + the same address within the page on the next page up. */ + . = ALIGN(8192); + /* Ensure the __preinit_array_start label is properly aligned. We + could instead move the label definition inside the section, but + the linker would then create the section even if it turns out to + be empty, which isn't pretty. */ + . = ALIGN(32 / 8); + PROVIDE (__preinit_array_start = .); + .preinit_arr...

...ation pass calls this new init function instead by a generated global constructor. It currently additionally invokes __asan_init since we are leveraging a modified ASAN runtime. Eventually, this should be changed to initialize refactored common support. Note that __asan init is also placed in the .preinit_array when it is available, so it is invoked even earlier than global constructors. Currently, it is not possible to do this for __heapprof_init, as it calls timespec_get in order to get a baseline timestamp (as described in the ChunkHeader comments the timestamps (ms) are actually offsets from the basel...

...ction instead by a generated global constructor. It currently > additionally invokes __asan_init since we are leveraging a modified ASAN > runtime. Eventually, this should be changed to initialize refactored common > support. > > > > Note that __asan init is also placed in the .preinit_array when it is > available, so it is invoked even earlier than global constructors. > Currently, it is not possible to do this for __heapprof_init, as it calls > timespec_get in order to get a baseline timestamp (as described in the > ChunkHeader comments the timestamps (ms) are actually of...

...unction instead by a generated global constructor. It > currently additionally invokes __asan_init since we are leveraging a > modified ASAN runtime. Eventually, this should be changed to > initialize refactored common support. > > > Note that __asan init is also placed in the .preinit_array when it is > available, so it is invoked even earlier than global constructors. > Currently, it is not possible to do this for __heapprof_init, as it > calls timespec_get in order to get a baseline timestamp (as described > in the ChunkHeader comments the timestamps (ms) are actuall...

...ead by a generated global constructor. It currently >> additionally invokes __asan_init since we are leveraging a modified ASAN >> runtime. Eventually, this should be changed to initialize refactored common >> support. >> >> Note that __asan init is also placed in the .preinit_array when it is >> available, so it is invoked even earlier than global constructors. >> Currently, it is not possible to do this for __heapprof_init, as it calls >> timespec_get in order to get a baseline timestamp (as described in the >> ChunkHeader comments the timestamps (ms)...

From: Matt Fleming <matt.fleming at intel.com> Here are the patches that I've got queued up based on the very helpful feedback I received from people testing Syslinux 5.00-pre9. Unless anyone has any concerns these will make it into Syslinux 5.00-pre10. Matt Fleming (9): pxe: Don't call open_config() from the pxe core ldlinux: Print a warning if no config file is found

...*__safestack_get_safe_stack_ptr() { + return (char*) __builtin_frame_address(0) + 2*sizeof(void*); +} + +#ifdef __linux__ +// Run safestack initialization before any other constructors +// FIXME: can we do something similar on Mac or FreeBSD? +extern "C" { +__attribute__((section(".preinit_array"), used)) +void (*__llvm__safestack_preinit)(void) = __llvm__safestack_init; +} +#endif + +} // namespace __llvm__safestack diff --git a/make/platform/clang_darwin.mk b/make/platform/clang_darwin.mk index 8b5f848..7908b77 100644 --- a/make/platform/clang_darwin.mk +++ b/make/platform/clang_dar...