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* fix signal.h breakage from moving stack_t to arch-specific bitsRich Felker2014-03-189-48/+50
| | | | | | in the previous changes, I missed the fact that both the prototype of the sigaltstack function and the definition of ucontext_t depend on stack_t.
* fix mips stack_tRich Felker2014-03-181-1/+1
| | | | like almost everything on mips, this is gratuitously different.
* move signal.h definition of stack_t to arch-specific bitsRich Felker2014-03-189-6/+48
| | | | | it's different at least on mips. mips version will be fixed in a separate commit to show the change.
* fix mips sigsetjmp asm to match fixed jmp_buf sizeRich Felker2014-03-181-1/+1
| | | | this was missed in the previous commit.
* fix typo in filename used in sh portRich Felker2014-03-181-0/+0
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* fix size of mips jmp_bufRich Felker2014-03-181-1/+1
| | | | | | | | | | | the excess space was unused and unintentional. this change does not affect the ABI between applications and libc. while it does theoretically affect linkage between third-party translation units using jmp_buf as part of a structure, we've already changed jmp_buf at least once on all archs, and problems were never observed, likely because such usage would be very unusual. in any case it's best to get things right now rather than making changes sometime during the 1.0.x series or later.
* remove useless and incorrect uc_regspace member from mips ucontext_tRich Felker2014-03-181-1/+0
| | | | | | this seems to have been copied erroneously from the arm version of the file. it's fairly harmless but it's a mistake and better to fix now than later.
* use syscall_arg_t for arguments in public syscall() functionRich Felker2014-03-181-7/+7
| | | | | | | on x32, this change allows programs which use syscall() with pointers or 64-bit values as arguments to work correctly, i.e. without truncation or incorrect sign extension. on all other supported archs, syscall_arg_t is defined as long, so this change is a no-op.
* make configure accept alternate gcc tuples for x32Rich Felker2014-03-171-1/+1
| | | | | | | | the previous pattern required "x32" to be used as the second field of the gcc tuple, which is usually reserved for vendor use and not appropriate as an ABI specifier. with this change, putting "x32" at the end of the tuple, the way ABI specifiers are normally done, is also permitted.
* x32: fix struct statfsrofl0r2014-03-171-2/+4
| | | | | the omission of the padding was uncovered by the latest regression statvfs regression test added to libc-test.
* fix negated error codes from ptsname_rRich Felker2014-03-171-1/+1
| | | | | | the incorrect error codes also made their way into errno when __ptsname_r was called by plain ptsname, which reports errors via errno rather than a return value.
* superh: fix dynamic linking of __fpscr_valuesBobby Bingham2014-03-162-1/+7
| | | | | | | | | | | | | | Applications ended up with copy relocations for this array, which resulted in libc's references to this array pointing to the application's copy. The dynamic linker, however, can require this array before the application is relocated, and therefore before the application's copy of this array is initialized. This resulted in garbage being loaded into FPSCR before executing main, which violated the ABI. We fix this by putting the array in crt1 and making the libc copy private. This prevents libc's reference to the array from pointing to an uninitialized copy in the application.
* semctl: fix UB causing crashes on powerpcrofl0r2014-03-131-4/+8
| | | | | | | | it's UB to fetch variadic args when none are passed, and this caused real crashes on ppc due to its calling convention, which defines that for variadic functions aggregate types be passed as pointers. the assignment caused that pointer to get dereferenced, resulting in a crash.
* fix statfs struct on mipsSzabolcs Nagy2014-03-121-3/+4
| | | | | | The mips statfs struct layout is different than on other archs, so the statfs, fstatfs, statvfs and fstatvfs APIs were broken on mips. Now the ordering is fixed, the types are kept consistent with other archs.
* fix semid_ds structure on mipsSzabolcs Nagy2014-03-121-2/+0
| | | | | This used to be broken when all archs had the same semid_ds definition: there is no padding around the time_t members on mips.
* fix socket.h struct msghdr member types on powerpcRich Felker2014-03-111-4/+4
| | | | | | these were incorrectly copied from the kernel, whose ABI matches the POSIX requirements but with the wrong underlying types and wrong signedness.
* fix sysvipc structures on powerpcRich Felker2014-03-114-20/+16
| | | | | | | | these have been wrong for a long time and were never detected or corrected. powerpc needs some gratuitous extra padding/reserved slots in ipc_perm, big-endian ordering for the padding of time_t slots that was intended by the kernel folks to allow a transition to 64-bit time_t, and some minor gratuitous reordering of struct members.
* move struct semid_ds to from shared sys/sem.h to bitsRich Felker2014-03-119-16/+129
| | | | | | | | | | | | the definition was found to be incorrect at least for powerpc, and fixing this cleanly requires making the definition arch-specific. this will allow cleaning up the definition for other archs to make it more specific, and reversing some of the ugliness (time_t hacks) introduced with the x32 port. this first commit simply copies the existing definition to each arch without any changes. this is intentional, to make it easier to review changes made on a per-arch basis.
* math.h: make __FLOAT_BITS and __DOUBLE_BITS C89Szabolcs Nagy2014-03-091-2/+4
| | | | | Remove non-constant aggregate initializer. (Still using long long, but that is supported by ancient compilers without __extension__ anyway).
* fix incorrect rounding in printf floating point corner casesRich Felker2014-03-091-2/+2
| | | | | | | | | | | | | | the printf floating point formatting code contains an optimization to avoid computing digits that will be thrown away by rounding at the specified (or default) precision. while it was correctly retaining all places up to the last decimal place to be printed, it was not retaining enough precision to see the next nonzero decimal place in all cases. this could cause incorrect rounding down in round-to-even (default) rounding mode, for example, when printing 0.5+DBL_EPSILON with "%.0f". in the fix, LDBL_MANT_DIG/3 is a lazy (non-sharp) upper bound on the number of zeros between any two nonzero decimal digits.
* fix buffer overflow in printf formatting of denormals with low bit setRich Felker2014-03-091-1/+2
| | | | | | | | | | | empirically the overflow was an off-by-one, and it did not seem to be overwriting meaningful data. rather than simply increasing the buffer size by one, however, I have attempted to make the size obviously correct in terms of bounds on the number of iterations for the loops that fill the buffer. this still results in no more than a negligible size increase of the buffer on the stack (6-7 32-bit slots) and is a "safer" fix unless/until somebody wants to do the proof that a smaller buffer would suffice.
* in sys/procfs.h, avoid using __WORDSIZE macroRich Felker2014-03-081-1/+1
| | | | | | | this was problematic because several archs don't define __WORDSIZE. we could add it, but I would rather phase this macro out in the long term. in our version of the headers, UINTPTR_MAX is available here, so just use it instead.
* add bits/user.h for sh portRich Felker2014-03-081-0/+75
| | | | | this seems to have been overlooked, and resulted in breakage in anything including sys/user.h.
* in fcntl, use unsigned long instead of long for variadic argument typeRich Felker2014-03-071-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | neither is correct; different commands take different argument types, and some take no arguments at all. I have a much larger overhaul of fcntl prepared to address this, but it's not appropriate to commit during freeze. the immediate problem being addressed affects forward-compatibility on x32: if new commands are added and they take pointers, but the libc-level fcntl function is not aware of them, using long would sign-extend the pointer to 64 bits and give the kernel an invalid pointer. on the kernel side, the argument to fcntl is always treated as unsigned long, so no harm is done by treating possibly-signed integer arguments as unsigned. for every command that takes an integer argument except for F_SETOWN, large integer arguments and negative arguments are handled identically anyway. in the case of F_SETOWN, the kernel is responsible for converting the argument which it received as unsigned long to int, so the sign of negative arguments is recovered. the other problem that will be addressed later is that the type passed to va_arg does not match the type in the caller of fcntl. an advanced compiler doing cross-translation-unit analysis could potentially see this mismatch and issue warnings or otherwise make trouble. on i386, this patch was confirmed not to alter the code generated by gcc 4.7.3. in principle the generated code should not be affected on any arch except x32.
* update copyright dates to 2014Rich Felker2014-03-061-2/+2
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* x32: fix sysinfo()rofl0r2014-03-062-0/+52
| | | | | | | | the kernel uses long longs in the struct, but the documentation says they're long. so we need to fixup the mismatch between the userspace and kernelspace structs. since the struct offers a mem_unit member, we can avoid truncation by adjusting that value.
* fix strerror on mips: one error code is out of the 8-bit table rangeRich Felker2014-03-051-1/+7
| | | | | | | if we ever encounter other targets where error codes don't fit in the 8-bit range, the table should probably just be bumped to 16-bit, but for now I don't want to increase the table size on all archs just because of a bug in the mips abi.
* improve configure's target arch matchingRich Felker2014-02-281-4/+6
| | | | | | | | | | | most notably, it was failing to match sh4-*, etc., but in general the explicit matching of hyphens for some archs was problematic because it failed to accept simply the musl-style arch name (without a gcc-style tuple) as an input. the original motivation of matching hyphens was to prevent incorrectly identifying a 64-bit arch as the corresponding 32-bit arch (e.g. mips* matching mips64) but this is easily fixed by simply checking (and for now, rejecting as unsupported) the relevant 64-bit archs.
* fix missing CFLAGS in configure test for float on shRich Felker2014-02-281-1/+1
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* fix copy-and-paste error in configure's IEEE double check for shRich Felker2014-02-271-1/+1
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* add nofpu subarchs to the sh arch, and properly detect compiler's fpu configRich Felker2014-02-2710-2/+76
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* fix endian subarchs for sh archRich Felker2014-02-273-7/+7
| | | | | default endianness for sh on linux is little, and while conventions vary, "eb" seems to be the most widely used suffix for big endian.
* rename superh port to "sh" for consistencyRich Felker2014-02-2744-2/+2
| | | | | | | | | linux, gcc, etc. all use "sh" as the name for the superh arch. there was already some inconsistency internally in musl: the dynamic linker was searching for "ld-musl-sh.path" as its path file despite its own name being "ld-musl-superh.so.1". there was some sentiment in both directions as to how to resolve the inconsistency, but overall "sh" was favored.
* fix readdir not to set ENOENT when directory is removed while readingRich Felker2014-02-251-2/+7
| | | | | | | | | | | | | | | | | per POSIX, ENOENT is reserved for invalid stream position; it is an optional error and would only happen if the application performs invalid seeks on the underlying file descriptor. however, linux's getdents syscall also returns ENOENT if the directory was removed between the time it was opened and the time of the read. we need to catch this case and remap it to simple end-of-file condition (null pointer return value like an error, but no change to errno). this issue reportedly affects GNU make in certain corner cases. rather than backing up and restoring errno, I've just changed the syscall to be made in a way that doesn't affect errno (via an inline syscall rather than a call to the __getdents function). the latter still exists for the purpose of providing the public getdents alias which sets errno.
* in.h: new IP_MTU_DISCOVER mode IP_PMTUDISC_INTERFACESzabolcs Nagy2014-02-251-0/+1
| | | | | introduced in linux v3.13, 482fc6094afad572a4ea1fd722e7b11ca72022a0 to mitigate dns cache poisoning via fragmentation
* if_ether.h: new ethernet protocol typeSzabolcs Nagy2014-02-251-0/+1
| | | | | for High-availability Seamless Redundancy (HSR) specified in IEC 62439-3 new in linux v3.13, f421436a591d34fa5279b54a96ac07d70250cc8d
* sys/socket.h: add the SO_MAX_PACING_RATE SOL_SOCKET optionSzabolcs Nagy2014-02-251-0/+1
| | | | introduced in linux v3.13, 62748f32d501f5d3712a7c372bbb92abc7c62bc7
* elf.h: add aarch64 relocationsSzabolcs Nagy2014-02-251-0/+111
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* elf.h: new elf header flag to mark 2008-NaN vs legacy-NaN on mipsSzabolcs Nagy2014-02-251-0/+1
| | | | see glibc commit 9c21573c02446b3d5cf6a34b67c8545e5be6a600
* add missing sub files for mipsel-sf to use softfloat codeRich Felker2014-02-243-0/+3
| | | | | | the build system has no automatic way to know this code applies to both big (default) and little endian variants, so explicit .sub files are needed.
* mips: add mips-sf subarch support (soft-float)Szabolcs Nagy2014-02-248-3/+69
| | | | | | | | | Userspace emulated floating-point (gcc -msoft-float) is not compatible with the default mips abi (assumes an FPU or in kernel emulation of it). Soft vs hard float abi should not be mixed, __mips_soft_float is checked in musl's configure script and there is no runtime check. The -sf subarch does not save/restore floating-point registers in setjmp/longjmp and only provides dummy fenv implementation.
* fixup general __syscall breakage introduced in x32 portrofl0r2014-02-243-0/+6
| | | | | | | | | the reordering of headers caused some risc archs to not see the __syscall declaration anymore. this caused build errors on mips with any compiler, and on arm and microblaze with clang. we now declare it locally just like the powerpc port does.
* make the x32 port use the correct ld-musl-x32.path filenameRich Felker2014-02-231-1/+1
| | | | | previously it was wrongly using the x86_64 one, precluding having both x32 and x86_64 libs present on the same system.
* superh portBobby Bingham2014-02-2346-0/+2350
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* fix x32 syscall arch.h timespec fixup coderofl0r2014-02-231-53/+49
| | | | | | | | it's legal to call the __syscall functions with more arguments than necessary, and the __syscall_cp cancel dummy impl. does just that. thus we must insert the switch for all possible syscalls numbers into all of the syscallN inline functions.
* fix some issues in x32 syscall_cp_fixuprofl0r2014-02-231-11/+8
| | | | | | - the nanosleep fixup "fixed" the second timespec* argument erroneusly. - the futex fixup was missing the check for FUTEX_WAIT. - general cleanup using a macro.
* mostly-cosmetic fixups to x32 port mergeRich Felker2014-02-234-12/+12
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* configure: suppress bogus pointer-int cast warningsrofl0r2014-02-231-0/+1
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* configure: recognize x86_64-x32 and x32rofl0r2014-02-231-0/+1
| | | | | | | | | | | x32 is the internal arch name, but glibc uses x86_64-x32. there doesn't exist a specific triple for x32 in gcc and binutils. you're supposed to build your compiler for x86_64 and configure it with multilib support for "mx32". however it turns out that using a triple of x86_64-x32 makes gcc and binutils pick up the right arch (they detect it as x86_64) and allows us to have a unique triple for cross-compiler toolchains.
* x32 port (diff against vanilla x86_64)rofl0r2014-02-2339-793/+882
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