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authorPaul Mackerras <paulus@samba.org>2006-01-14 10:11:39 +1100
committerPaul Mackerras <paulus@samba.org>2006-01-14 10:11:39 +1100
commit80f15dc703b3677d0b025bafd215f1f3664c8978 (patch)
treefa60781edcedefe4eb6baa6d213a62bbc6d7803a /arch/powerpc/oprofile
parent25cd6aa0aa059b48cdcef2a00981b14fafd5161a (diff)
powerpc: Provide a suitable AT_PLATFORM value
The glibc folks want to use AT_PLATFORM to select between possible alternative versions of shared libraries. This commit makes the kernel supply an AT_PLATFORM string that indicates what class of processor we are running on. Processors with the same set of user-level instructions and roughly the same instruction scheduling characteristics are given the same AT_PLATFORM value; for example, 821, 823 and 860 are all reported as "ppc823", and 7447, 7447A, 7448, 7450, 7451, 7455 are all called "ppc7450". The intention is that the AT_PLATFORM values match the values that gcc accepts for the -mcpu= option. For values which are numeric (e.g. -mcpu=750), "ppc" has been prepended. This also adds a PPC_FEATURE_BOOKE bit to the AT_HWCAP value and sets it for the 440 family and the Freescale 85xx family. Signed-off-by: Paul Mackerras <paulus@samba.org>
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