- 08 3月, 2011 9 次提交
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由 Rich Felker 提交于
problem 1: mutex type from the attribute was being ignored by pthread_mutex_init, so recursive/errorchecking mutexes were never being used at all. problem 2: ownership of recursive mutexes was not being enforced at unlock time.
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由 Rich Felker 提交于
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由 Rich Felker 提交于
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由 Rich Felker 提交于
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由 Rich Felker 提交于
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由 Rich Felker 提交于
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由 Rich Felker 提交于
note that, while the attributes are stored, they are not used in pthread_cond_init yet.
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由 Rich Felker 提交于
note that this is a pedantic conformance issue and waste of code. it only affects broken code or code that is probing for conformance.
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由 Rich Felker 提交于
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- 04 3月, 2011 3 次提交
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由 Rich Felker 提交于
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由 Rich Felker 提交于
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由 Rich Felker 提交于
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- 03 3月, 2011 1 次提交
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由 Rich Felker 提交于
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- 02 3月, 2011 1 次提交
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由 Rich Felker 提交于
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- 27 2月, 2011 4 次提交
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由 Rich Felker 提交于
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由 Rich Felker 提交于
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由 Rich Felker 提交于
this code was written independently of musl, with support for a the backwards, nonstandard "31-bit unicode" some libraries/apps might want. unfortunately the extra code (inside #ifdef) makes the source harder to read and makes code that should be simple look complex, so i'm removing it. anyone who wants to use the old code can find it in the history or from elsewhere. also, change the visibility of the __fsmu8 state machine table to hidden, if supported. this should improve performance slightly in shared-library builds.
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由 Rich Felker 提交于
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- 25 2月, 2011 3 次提交
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由 Rich Felker 提交于
prefer using visibility=hidden for __libc internal data, rather than an accessor function, if the compiler has visibility. optimize with -O3 for PIC targets (shared library). without heavy inlining, reloading the GOT register in small functions kills performance. 20-30% size increase for a single libc.so is not a big deal, compared to comparaible size increase in every static binaries. use -Bsymbolic-functions, not -Bsymbolic. global variables are subject to COPY relocations, and thus binding their addresses in the library at link time will cause library functions to read the wrong (original) copies instead of the copies made in the main program's bss section. add entry point, _start, for dynamic linker.
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由 Rich Felker 提交于
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由 Rich Felker 提交于
this only made the function unnecessarily slow on systems with unaligned access, but would of course crash on systems that can't do unaligned accesses (none of which have ports yet).
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- 23 2月, 2011 1 次提交
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由 Rich Felker 提交于
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- 22 2月, 2011 2 次提交
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由 Rich Felker 提交于
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由 Rich Felker 提交于
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- 21 2月, 2011 9 次提交
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由 Rich Felker 提交于
prior to this change, a large portion of libc was unusable prior to relocation by the dynamic linker, due to dependence on the global data in the __libc structure and the need to obtain its address through the GOT. with this patch, the accessor function __libc_loc is now able to obtain the address of __libc via PC-relative addressing without using the GOT. this means the majority of libc functionality is now accessible right away. naturally, the above statements all depend on having an architecture where PC-relative addressing and jumps/calls are feasible, and a compiler that generates the appropriate code.
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由 Rich Felker 提交于
this change is in preparation for upcoming PIC/shared library support. the intent is to avoid going through the GOT, mainly so that dprintf is operable immediately, prior to processing of relocations. having dprintf accessible from the dynamic linker will make writing and debugging the dynamic linker much easier.
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由 Rich Felker 提交于
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由 Rich Felker 提交于
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由 Rich Felker 提交于
this change is made with some reluctance, but i think it's for the best. correct programs must handle either behavior, so there is little advantage to having malloc(0) return NULL. and i managed to actually make the malloc code slightly smaller with this change.
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由 Rich Felker 提交于
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由 Rich Felker 提交于
do not allow allocations that overflow ptrdiff_t; fix some overflow checks that were not quite right but didn't matter due to address layout implementation.
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由 Rich Felker 提交于
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由 Rich Felker 提交于
this is needed in the long term for ABI compatibility anyway, and in the immediate, it helps with building broken programs like GNU screen that try to prototype the functions themselves rather than using the header.
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- 20 2月, 2011 4 次提交
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由 Rich Felker 提交于
note that this library itself is built with -ffreestanding so sincos.c should not be miscompiled even if the gcc used to compile musl has this bug.
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由 Rich Felker 提交于
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由 Rich Felker 提交于
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由 Rich Felker 提交于
the existence of a (kernelspace) thread must never have observable effects after the thread count is decremented. if signals are not blocked, it could end up handling the signal for rsyscall and contributing towards the count of threads which have changed ids, causing a thread to be missed. this could lead to one thread retaining unwanted privilege level. this change may also address other subtle race conditions in application code that uses signals.
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- 19 2月, 2011 3 次提交
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由 Rich Felker 提交于
this code was wrongly disabled because the old version was trying to be too clever and didn't work. replaced it with a simple version for now.
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由 Rich Felker 提交于
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由 Rich Felker 提交于
the historic mktemp is supposed to blank the template string on failure, rather than returning 0. just zero the first character so that mkstemp and mkdtemp can still retry with O(1) space requirement.
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