On Wed, 2015-10-28 at 18:44 -0700, David Miller wrote: > From: David Woodhouse <dwmw2@xxxxxxxxxxxxx> > Date: Wed, 28 Oct 2015 23:53:52 +0900 > > > I know MIPS will need some additional libgcc functionality brought > > into the kernel, and Ralf has already been looking at that; not > sure > > about other platforms. Let's find out :) > > It should properly build on Sparc, but I still need to do my due > diligence to see if gcc will actually emit the little-endian loads > and stores or not... The results of the 0-day test (thanks Fengguang) seem to indicate that we need an implementation of __bswapdi2 and __bswapsi2 on SPARC, as well as blackfin, frv, m32r, m68k, microblaze, mips, mn10300, parisc and sh. I wonder if we could provide a generic weak version in the lib/ directory which just uses the existing __arch_swab32 et al? Does GCC use a standard function call ABI for __bswap[sd]i2 or can it be 'special'? -- dwmw2
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