- 01 8月, 2019 1 次提交
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由 Rich Felker 提交于
without this, the SO_RCVTIMEO and SO_SNDTIMEO socket options would stop working on pre-5.1 kernels after time_t is switched to 64-bit and their values are changed to the new time64 versions. new code is written such that it's statically unreachable on 64-bit archs, and on existing 32-bit archs until the macro values are changed to activate 64-bit time_t.
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- 19 7月, 2019 1 次提交
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由 Rich Felker 提交于
now that we have a kstat structure decoupled from the public struct stat, we can just use the broken kernel structures directly and let the code in fstatat do the translation.
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- 17 7月, 2019 2 次提交
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由 Rich Felker 提交于
ever since inline syscalls were added for (o32) mips in commit 328810d3, the asm has nonsensically loaded the syscall number, rather than taking $2 as an input constraint to let the compiler load it. commit cfc09b1e improved on this somewhat by allowing a constant syscall number to propagate into an immediate, but missed that the whole operation made no sense. now, only $4, $5, $6, $8, and $9 are potential input-only registers. $2 is always input and output, and $7 is both when it's an argument, otherwise output-only. previously, $7 was treated as an input (with a "1" constraint matching its output position) even when it was not an input, which was arguably undefined behavior (asm input from indeterminate value). this is corrected.
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由 Rich Felker 提交于
this patch is not purely non-functional changes, since before, $8 and $9 were wrongly in the clobberlist for syscalls with fewer than 5 or 6 arguments. of course it's impossible for syscalls to have different clobbers depending on their number of arguments. the clobberlist for the recently-added 5- and 6-argument forms was correct, and for the 0- to 4-argument forms was erroneously copied from the mips o32 ABI where the additional arguments had to be passed on the stack. in making this change, I reviewed the kernel sources, and $8 and $9 are always saved for 64-bit kernels since they're part of the syscall argument list for n32 and n64 ABIs.
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- 11 4月, 2019 2 次提交
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由 Rich Felker 提交于
n32 and n64 ABIs add new argument registers vs o32, so that passing on the stack is not necessary, so it's not clear why the 5- and 6-argument versions were special-cased to begin with; it seems to have been pattern-copying from arch/mips (o32). i've treated the new argument registers like the first 4 in terms of clobber status (non-clobbered). hopefully this is correct.
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由 Rich Felker 提交于
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- 01 6月, 2017 2 次提交
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由 Rich Felker 提交于
at one point, clang reportedly failed to support the asm register constraints needed for inline syscalls. versions of clang that old have much bigger problems that preclude using them to compile musl libc.
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由 Rich Felker 提交于
mips64 requires 'struct stat' conversion due to incorrect 32-bit fields where time_t should be in the kernel version of the structure. syscall_arch.h already performed the correct translation for stat, fstat, and lstat syscalls, but omitted special handling for fstatat.
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- 07 3月, 2016 1 次提交
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由 Rich Felker 提交于
patch by Mahesh Bodapati and Jaydeep Patil of Imagination Technologies.
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