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authorPatrick Rudolph <patrick.rudolph@9elements.com>2023-09-30 15:12:17 +0200
committerFelix Held <felix-coreboot@felixheld.de>2023-10-02 14:01:59 +0000
commit699b1c4a66084049531bc59a392052b4251da1e0 (patch)
treed87d4263568e2edde85b30f473f61a26863f0af2 /src/soc/nvidia
parent4c7e97b26a3492c5799edcfb3c3740870a6debf1 (diff)
x86/include/arch/cpuid.h: Fix inline assembly
In the cpuid helper functions eax is always written to by the cpuid instruction, so add it to the output clobbered list. This prevents GCC from generating code with undefined behaviour when the function is inlined. Test: Verified that the generated assembly is sane and runtime tests showed no "strange" behaviour when calling cpuid functions. Change-Id: I5dc0bb620184a355716b9c8d4206d55554b41ab9 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/78192 Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Krystian Hebel <krystian.hebel@3mdeb.com> Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
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