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authorRich Felker <dalias@aerifal.cx>2019-07-16 21:05:24 -0400
committerRich Felker <dalias@aerifal.cx>2019-07-16 21:05:24 -0400
commit918c5fa0fc656e49b1ab9ce47183a23e3a36bc00 (patch)
tree4d1f8a2802bbd43f47032bd72fdd51cfb24a559e /arch/powerpc/syscall_arch.h
parentddc7c4f936c7a90781072f10dbaa122007e939d0 (diff)
downloadmusl-918c5fa0fc656e49b1ab9ce47183a23e3a36bc00.tar.gz
fix broken lseek on mipsn32 with offsets larger than LONG_MAX
mips n32 has 32-bit long, and generally uses long syscall arguments and return values, but provides only SYS_lseek, not SYS_llseek. we have some framework (syscall_arg_t, added for x32) to make syscall arguments 64-bit in such a setting, but it's not clear whether this could match the sign-extension semantics needed for 32-bit args to all the other syscalls, and we don't have any existing mechanism to allow the return value of syscalls to be something other than long. instead, just provide a custom mipsn32 version of the lseek function doing its own syscall asm with 64-bit arguments. as a result of commit 03919b26ed41c31876db41f7cee076ced4513fad, stdio will also get the new code, fixing fseeko/ftello too.
Diffstat (limited to 'arch/powerpc/syscall_arch.h')
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