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authorRich Felker <dalias@aerifal.cx>2012-09-10 22:43:22 -0400
committerRich Felker <dalias@aerifal.cx>2012-09-10 22:43:22 -0400
commitb94067eeae894b5a26170cebc378261f83ad00cb (patch)
tree33d1536ced6a1eef7f3d49658128db782ed489fc /src
parent2bf469310de6793228c103691859ed4d3158b117 (diff)
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eliminate assumption that mips syscall restart preserves r25
all past and current kernel versions have done so, but there seems to
be no reason it's necessary and the sentiment from everyone I've asked
has been that we should not rely on it. instead, use r7 (an argument
register) which will necessarily be preserved upon syscall restart.
however this only works for 0-3 argument syscalls, and we have to
resort to the function call for 4-argument syscalls.
Diffstat (limited to 'src')
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