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2015-03-30fix POLLWRNORM and POLLWRBAND on mipsTrutz Behn-0/+2
these macros have the same distinct definition on blackfin, frv, m68k, mips, sparc and xtensa kernels. POLLMSG and POLLRDHUP additionally differ on sparc. (cherry picked from commit f5011c62c3329f15652a60b6b2300d7e3f570977)
2015-03-30fix typo in x86_64/x32 user_fpregs_structFelix Janda-2/+2
mxcs_mask should be mxcr_mask (cherry picked from commit 4758f0565df83beb8f9b24857ec40ca3a40d2281)
2014-07-28fix regression that negated some mips syscall error returnsRich Felker-5/+5
due to what was essentially a copy and paste error, the changes made in commit f61be1f875a2758509d6e9e2cf6f1d9603b28b65 caused syscalls with 5 or 6 arguments (and syscalls with 2, 3, or 4 arguments when compiled with clang compatibility) to negate the returned error code a second time, breaking errno reporting. (cherry picked from commit 1312930f9bdea47006a8a8c8509c0bed5cf69e85)
2014-07-28fix mips struct stat dev_t members for big endianRich Felker-20/+81
the mips version of this structure on the kernel side wrongly has 32-bit type rather than 64-bit type. fortunately there is adjacent padding to bring it up to 64 bits, and on little-endian, this allows us to treat the adjacent kernel st_dev and st_pad0[0] as as single 64-bit dev_t. however, on big endian, such treatment results in the upper and lower 32-bit parts of the dev_t value being swapped. for the purpose of just comparing st_dev values this did not break anything, but it precluded actually processing the device numbers as major/minor values. since the broken kernel behavior that needs to be worked around is isolated to one arch, I put the workarounds in syscall_arch.h rather than adding a stat fixup path in the common code. on little endian mips, the added code optimizes out completely. the changes necessary were incompatible with the way the __asm_syscall macro was factored so I just removed it and flattened the individual __syscallN functions. this arguably makes the code easier to read and understand, anyway. (cherry picked from commit f61be1f875a2758509d6e9e2cf6f1d9603b28b65)
2014-07-28fix missing barriers in powerpc atomic storeRich Felker-1/+5
(cherry picked from commit 522a0de2101abd12b19a4d2ba5c09abbb7c5fc79)
2014-07-28fix microblaze atomic storeRich Felker-1/+3
as far as I can tell, microblaze is strongly ordered, but this does not seem to be well-documented and the assumption may need revisiting. even with strong ordering, however, a volatile C assignment is not sufficient to implement atomic store, since it does not preclude reordering by the compiler with respect to non-volatile stores and loads. simply flanking a C store with empty volatile asm blocks with memory clobbers would achieve the desired result, but is likely to result in worse code generation, since the address and value for the store may need to be spilled. actually writing the store in asm, so that there's only one asm block, should give optimal code generation while satisfying the requirement for having a compiler barrier. (cherry picked from commit 884cc0c7e253601b96902120ed689f34d12f8aa0)
2014-07-28fix missing barrier instructions in powerpc atomic asmRich Felker-1/+4
(cherry picked from commit 1456b7ae6b72a4f2c446243acdde7c951268d4ab)
2014-07-28fix missing barrier instructions in mips atomic asmRich Felker-14/+18
previously I had wrongly assumed the ll/sc instructions also provided memory synchronization; apparently they do not. this commit adds sync instructions before and after each atomic operation and changes the atomic store to simply use sync before and after a plain store, rather than a useless compare-and-swap. (cherry picked from commit bcad48439494820989f5867c3f8ccfa6aae2909f)
2014-07-28use memory constraints for mips atomic asmRich Felker-24/+24
despite lacking the semantic content that the asm accesses the pointed-to object rather than just using its address as a value, the mips asm was not actually broken. the asm blocks were declared volatile, meaning that the compiler must treat them as having unknown side effects. however changing the asm to use memory constraints is desirable not just from a semantic correctness and consistency standpoint, but also produces better code. the compiler is able to use base/offset addressing expressions for the atomic object's address rather than having to load the address into a single register. this improves access to global locks in static libc, and access to non-zero-offset atomic fields in synchronization primitives, etc. (cherry picked from commit a294f539c78c6ba0a2786ef3c5b2a1210a33864e)
2014-07-28fix build breakage from ppc asm constraints changeRich Felker-3/+3
due to a mistake in my testing procedure, the changes in the previous commit were not correctly tested and wrongly assumed to be valid. the lwarx and stwcx. instructions do not accept general ppc memory address expressions and thus the argument associated with the memory constraint cannot be used directly. instead, the memory constraint can be left as an argument that the asm does not actually use, and the address can be provided in a separate register constraint. (cherry picked from commit bb3a3befeaa01531c273ef9130f3fbcaaf8a25e2)
2014-07-28remove cruft from microblaze atomic.hRich Felker-13/+0
(cherry picked from commit 94252dd341a7c72b31db2614abdc74142ad80562)
2014-07-28fix broken constraints for powerpc atomic cas asmRich Felker-1/+1
the register constraint for the address to be accessed did not convey that the asm can access the pointed-to object. as far as the compiler could tell, the result of the asm was just a pure function of the address and the values passed in, and thus the asm could be hoisted out of loops or omitted entirely if the result was not used. (cherry picked from commit 7fdae458bd421046a300a69dcb32953ac9450136)
2014-07-28fix microblaze definition of struct statRich Felker-3/+2
the erroneous definition was missed because with works with qemu user-level emulation, which also has the wrong definition. the actual kernel uses the asm-generic generic definition. (cherry picked from commit d69ab5b3686acf75fdf5db6fad19c2c6a510bb4f)
2014-07-28fix powerpc dynamic linker thread-pointer-relative relocationsRich Felker-3/+3
processing of R_PPC_TPREL32 was ignoring the addend provided by the RELA-style relocation and instead using the inline value as the addend. this presumably broke dynamic-linked access to initial TLS in cases where the addend was nonzero. (cherry picked from commit 94cf991bf4b18bb87a15a96e7b5e7d92fab787ba)
2014-06-06fix for broken kernel side RLIM_INFINITY on mipsSzabolcs Nagy-0/+2
On 32 bit mips the kernel uses -1UL/2 to mark RLIM_INFINITY (and this is the definition in the userspace api), but since it is in the middle of the valid range of limits and limits are often compared with relational operators, various kernel side logic is broken if larger than -1UL/2 limits are used. So we truncate the limits to -1UL/2 in get/setrlimit and prlimit. Even if the kernel side logic consistently treated -1UL/2 as greater than any other limit value, there wouldn't be any clean workaround that allowed using large limits: * using -1UL/2 as RLIM_INFINITY in userspace would mean different infinity value for get/setrlimt and prlimit (where infinity is always -1ULL) and userspace logic could break easily (just like the kernel is broken now) and more special case code would be needed for mips. * translating -1UL/2 kernel side value to -1ULL in userspace would mean that -1UL/2 limit cannot be set (eg. -1UL/2+1 had to be passed to the kernel instead). (cherry picked from commit 8258014fd1e34e942a549c88c7e022a00445c352)
2014-05-20fix missing SO_RCVBUFFORCE and SO_SNDBUFFORCE in mips socket.hRich Felker-1/+2
(cherry picked from commit 468bc11ed059c475f974920ac3d499e6071a6b2c)
2014-04-16fix RLIMIT_ constants for mipsSzabolcs Nagy-0/+5
The mips arch is special in that it uses different RLIMIT_ numbers than other archs, so allow bits/resource.h to override the default RLIMIT_ numbers (empty on all archs except mips). Reported by orc. (cherry picked from commit fcea534e579077e10456f6ed06c033dfaa013a24)
2014-04-16fix microblaze syscall register clobbersRich Felker-7/+7
the kernel entry point for syscalls on microblaze nominally saves and restores all registers, and testing on qemu always worked since qemu behaves this way too. however, the real kernel treats r3:r4 as a potential 64-bit return value from the syscall function, and copies both over top of the saved registers before returning to userspace. thus, we need to treat r4 as always-clobbered. (cherry picked from commit 91d5aa06572d2660122f9a06ed242fef0383f292)
2014-03-18fix signal.h breakage from moving stack_t to arch-specific bitsRich Felker-48/+48
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.
2014-03-18fix mips stack_tRich Felker-1/+1
like almost everything on mips, this is gratuitously different.
2014-03-18move signal.h definition of stack_t to arch-specific bitsRich Felker-0/+48
it's different at least on mips. mips version will be fixed in a separate commit to show the change.
2014-03-18fix typo in filename used in sh portRich Felker-0/+0
2014-03-18fix size of mips jmp_bufRich Felker-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.
2014-03-18remove useless and incorrect uc_regspace member from mips ucontext_tRich Felker-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.
2014-03-17x32: fix struct statfsrofl0r-2/+4
the omission of the padding was uncovered by the latest regression statvfs regression test added to libc-test.
2014-03-16superh: fix dynamic linking of __fpscr_valuesBobby Bingham-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.
2014-03-12fix statfs struct on mipsSzabolcs Nagy-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.
2014-03-12fix semid_ds structure on mipsSzabolcs Nagy-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.
2014-03-11fix socket.h struct msghdr member types on powerpcRich Felker-4/+4
these were incorrectly copied from the kernel, whose ABI matches the POSIX requirements but with the wrong underlying types and wrong signedness.
2014-03-11fix sysvipc structures on powerpcRich Felker-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.
2014-03-11move struct semid_ds to from shared sys/sem.h to bitsRich Felker-0/+128
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.
2014-03-08add bits/user.h for sh portRich Felker-0/+75
this seems to have been overlooked, and resulted in breakage in anything including sys/user.h.
2014-03-06x32: fix sysinfo()rofl0r-0/+47
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.
2014-02-27add nofpu subarchs to the sh arch, and properly detect compiler's fpu configRich Felker-0/+9
2014-02-27fix endian subarchs for sh archRich Felker-5/+5
default endianness for sh on linux is little, and while conventions vary, "eb" seems to be the most widely used suffix for big endian.
2014-02-27rename superh port to "sh" for consistencyRich Felker-0/+0
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 "". there was some sentiment in both directions as to how to resolve the inconsistency, but overall "sh" was favored.
2014-02-24mips: add mips-sf subarch support (soft-float)Szabolcs Nagy-1/+12
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.
2014-02-24fixup general __syscall breakage introduced in x32 portrofl0r-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.
2014-02-23make the x32 port use the correct ld-musl-x32.path filenameRich Felker-1/+1
previously it was wrongly using the x86_64 one, precluding having both x32 and x86_64 libs present on the same system.
2014-02-23superh portBobby Bingham-0/+1950
2014-02-23fix x32 syscall arch.h timespec fixup coderofl0r-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.
2014-02-23fix some issues in x32 syscall_cp_fixuprofl0r-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.
2014-02-23mostly-cosmetic fixups to x32 port mergeRich Felker-1/+1
2014-02-23x32 port (diff against vanilla x86_64)rofl0r-679/+762
2014-02-23import vanilla x86_64 code as x32rofl0r-0/+1986
2014-02-23sys/shm.h: move arch specific structs to bits/rofl0r-0/+66
2014-01-15remove more unnecessary operand-size suffixes from x86_64 atomic.hRich Felker-3/+3
2014-01-11remove gratuitous temp vars, casts, and suffixes in x86_64 atomic.hRich Felker-13/+11
aside from general cleanup, this should allow the identical atomic.h file to be used for the upcoming x32 port.
2014-01-11remove size suffix in x86_64 __pthread_self asmRich Felker-1/+1
the operand size is unnecessary, since the assembler knows it from the destination register size. removing the suffix makes it so the same code should work for x32.
2014-01-11make type of st_dev explicitly dev_t in x86_64 stat.hRich Felker-1/+1
otherwise it's unclear that it's correct. aside from that, it makes for a gratuitous difference between the x86_64 header and the upcoming x32 header.