From be0c46d464c7c6b601adcd21fe9d2dd054a6a2cf Mon Sep 17 00:00:00 2001 From: Sandipan Das Date: Thu, 6 Sep 2018 12:27:29 +0530 Subject: [PATCH] target-ppc: Extend HWCAP2 bits for ISA 3.0 This adds the HWCAP2 bit to detect if a linux user process is running on an ISA 3.0 compliant cpu like POWER9. This can be verified using a simple test program that prints the value in the auxiliary vector for AT_HWCAP2 as shown below. Before: $ qemu-ppc64le -cpu power8 test 0x8c000000 $ qemu-ppc64le -cpu power9 test 0x8c000000 After: $ qemu-ppc64le -cpu power8 test 0x8c000000 $ qemu-ppc64le -cpu power9 test 0x8c800000 Signed-off-by: Sandipan Das Reviewed-by: Laurent Vivier Signed-off-by: David Gibson --- linux-user/elfload.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 8638612aec..e97c4cde49 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -710,6 +710,7 @@ enum { QEMU_PPC_FEATURE2_HAS_EBB = 0x10000000, /* Event Base Branching */ QEMU_PPC_FEATURE2_HAS_ISEL = 0x08000000, /* Integer Select */ QEMU_PPC_FEATURE2_HAS_TAR = 0x04000000, /* Target Address Register */ + QEMU_PPC_FEATURE2_ARCH_3_00 = 0x00800000, /* ISA 3.00 */ }; #define ELF_HWCAP get_elf_hwcap() @@ -764,6 +765,7 @@ static uint32_t get_elf_hwcap2(void) GET_FEATURE2(PPC2_BCTAR_ISA207, QEMU_PPC_FEATURE2_HAS_TAR); GET_FEATURE2((PPC2_BCTAR_ISA207 | PPC2_LSQ_ISA207 | PPC2_ALTIVEC_207 | PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07); + GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00); #undef GET_FEATURE #undef GET_FEATURE2