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2012-08-05fix change lost in the process of integrating mips dynamic linkerRich Felker1-2/+2
2012-08-05remove configure check disabling shared libraries on mipsRich Felker1-4/+0
2012-08-05mips dynamic linker supportRich Felker3-3/+102
not heavily tested, but the basics are working. the basic concept is that the dynamic linker entry point code invokes a pure-PIC (no global accesses) C function in reloc.h to perform the early GOT relocations needed to make the dynamic linker itself functional, then invokes __dynlink like on other archs. since mips uses some ugly arch-specific hacks to optimize relocating the GOT (rather than just using the normal DT_REL[A] tables like on other archs), the dynamic linker has been modified slightly to support calling arch-specific relocation code in reloc.h. most of the actual mips-specific behavior was developed by reading the output of readelf on libc.so and simple executable files. i could not find good reference information on which relocation types need to be supported or their semantics, so it's possible that some legitimate usage cases will not work yet.
2012-08-05make dynlink.lo depend on reloc.h in makefileRich Felker1-0/+2
this is mainly a development convenience but will also ensure users building from latest git always get up-to-date arch-specific dynamic linker code without having to "make clean".
2012-08-05more cleanup of dynamic linker internalsRich Felker1-8/+9
2012-08-05more dynamic linker internals cleanupRich Felker1-6/+6
changing the string printed for the dso name is not a regression; the old code was simply using the wrong dso name (head rather than the dso currently being relocated). this will be fixed in a later commit.
2012-08-05dynamic linker internals cleanupRich Felker1-5/+7
2012-08-05floating point support for arm setjmp/longjmpRich Felker2-2/+54
not heavily tested, but at least they don't seem to break anything on soft float targets with or without coprocessors. they check the auxv AT_HWCAP flags to determine which coprocessor, if any, is available.
2012-08-02release notes for 0.9.3Rich Felker1-0/+35
2012-08-02abstract out compiler runtime library for linking libc.soRich Felker1-1/+2
this allows config.mak to override the default -lgcc for building with other compilers such as pcc/clang/etc.
2012-08-02fix argument type error on wcwidth functionRich Felker1-2/+2
since the correct declaration was not visible, and since the representation of the types wchar_t and wint_t always match, a compiler would have to go out of its way to make this bug manifest, but better to fix it anyway.
2012-08-02fix missing static in getusershell (namespace pollution)Rich Felker1-1/+1
2012-07-31optimize mempcpy to minimize need for data saved across the callRich Felker1-2/+1
2012-07-27optimize arm setjmp/longjmp register saving/loadingRich Felker2-6/+2
the original code was wrongly based on how it would be done in thumb mode, but that's not needed because musl's asm only targets arm.
2012-07-27save AT_HWCAP from auxv for subsequent use in machine-specific codeRich Felker3-0/+4
it's expected that this will be needed/useful only in asm, so I've given it its own symbol that can be addressed in pc-relative ways from asm rather than adding a field in the __libc structure which would require hard-coding the offset wherever it's used.
2012-07-24retry on cas failures in sem_trywaitRich Felker1-2/+2
this seems counter-intuitive since sem_trywait is supposed to just try once, not wait for the semaphore. however, the retry loop is not a wait. instead, it's to handle the case where the value changes due to a simultaneous post or wait from another thread while the semaphore value remains positive. in such a case, it's absolutely wrong for sem_trywait to fail with EAGAIN because the semaphore is not busy.
2012-07-23gcc wrapper improvement: leave libgcc dir in the library pathRich Felker1-1/+1
this is needed in case -lgcc is passed explicitly on the link command line, for example if the wrapper is being used to build musl itself.
2012-07-23add ioperm/iopl syscallsRich Felker3-0/+31
based on patches by orc and Isaac Dunham, with some fixes. sys/io.h exists and contains prototypes for these functions regardless of whether the target arch has them; this is a bit unorthodox but I don't think it will break anything. the function definitions do not exist unless the appropriate SYS_* syscall number macro is defined, which should make sure configure scripts looking for these functions don't find them on other systems. presently, sys/io.h does not have the inb/outb/etc. port io macros/functions. I'd be surprised if ioperm/iopl are useful without them, so they probably need to be added at some point in appropriate bits/io.h files...
2012-07-23add splice and vmsplice syscallsRich Felker3-0/+28
based on patches by orc and Isaac Dunham.
2012-07-23add extended attributes syscallsRich Felker2-0/+74
based on patch by orc and Isaac Dunham, with some fixes.
2012-07-23add pipe2 syscallRich Felker2-0/+9
based on patch by orc and Isaac Dunham, with some details fixed.
2012-07-22remove scanf dependency from getaddrinfo /etc/services supportRich Felker1-5/+4
2012-07-22getaddrinfo /etc/services lookup supportRich Felker1-3/+16
2012-07-22fix namespace issue in prototypes in math.hRich Felker1-2/+2
2012-07-22fix wrong size for sigjmp_buf signal set arrayRich Felker1-1/+1
128 is the size in bytes, not longs.
2012-07-22add floating point register saving/restoring to mips setjmp/longjmpRich Felker3-2/+30
also fix the alignment of jmp_buf to meet the abi. linux always emulates fpu on mips if it's not present, so enabling this code unconditionally is "safe" but may be slow. in the long term it may be preferable to find a way to disable it on soft float builds.
2012-07-22make getservby*_r return error code rather than -1 (and using errno)Rich Felker2-19/+35
untested but should be correct..
2012-07-21fix logic error for skipping failed interfaces in if_nameindexRich Felker1-8/+7
2012-07-19fix typo in aio.hRich Felker1-1/+1
2012-07-14fix getservby*() with null pointer for protocol argumentRich Felker2-0/+8
not sure this is the best fix but it should work
2012-07-14avoid blx instruction which does not exist on armv4t or armv4Rich Felker1-1/+2
2012-07-13make dynamic linker tell the debugger its own pathnameRich Felker1-0/+5
use the main program's PT_INTERP header if possible, since this is sure to be a correct (and hopefully absolute) pathname.
2012-07-12fix broken mips a_fetch_addRich Felker1-7/+7
sc was overwriting the result