On Fri, Oct 9, 2009 at 2:58 AM, J. William Campbell <jwilliamcampb...@comcast.net> wrote: > Graeme Russ wrote: >> >> Out of curiosity, I wanted to see just how much of a size penalty I am >> incurring by using gcc -fpic / ld -pic on my x86 u-boot build. Here are >> the results (fixed width font will help - its space, not tab, formatted): >> >> Section non-reloc reloc >> --------------------------------------- >> .text 000118c4 000137fc <- 0x1f38 bytes (~8kB) bigger >> .rodata 00005bad 000059d0 >> .interp n/a 00000013 >> .dynstr n/a 00000648 >> .hash n/a 00000428 >> .eh_frame 00003268 000034fc >> .data 00000a6c 000001dc >> .data.rel n/a 00000098 >> .data.rel.ro.local n/a 00000178 >> .data.rel.local n/a 000007e4 >> .got 00000000 000001f0 >> .got.plt n/a 0000000c >> .rel.got n/a 000003e0 >> .rel.dyn n/a 00001228 >> .dynsym n/a 00000850 >> .dynamic n/a 00000080 >> .u_boot_cmd 000003c0 000003c0 >> .bss 00001a34 00001a34 >> .realmode 00000166 00000166 >> .bios 0000053e 0000053e >> ======================================= >> Total 0001d5dd 00022287 <- 0x4caa bytes (~19kB) bigger >> >> Its more than a 16% increase in size!!! >> >> .text accounts for a little under half of the total bloat, and of that, >> the crude dynamic loader accounts for only 341 bytes >> > > Hi Graeme, > I would be interested in a third option (column), the x86 build with > just -mrelocateable but NOT -fpic. It will not be definitive because there > will be extra code that references the GOT and missing code to do some of > the relocation, but it would still be interesting.
x86 does not have -mrelocatable. This is a PPC only option :( > > Best Regards, > Bill Campbell >> >> Have any metrics been done for PPC? >> >> Regards, >> >> Graeme Once the reloc branch has been merged, how many arches are left which do not support relocation? Regards, Graeme _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
