From d2ed5cb80a241518dd71f467c884bfabbe15f68c Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 2 Nov 2008 09:16:50 +0000 Subject: [ARM] fix VFP+softfloat binaries 2.6.28-rc tightened up the ELF architecture checks on ARM. For non-EABI it only allows VFP if the hardware supports it. However, the kernel fails to also inspect the soft-float flag, so it incorrectly rejects binaries using soft-VFP. The fix is simple: also check that EF_ARM_SOFT_FLOAT isn't set before rejecting VFP binaries on non-VFP hardware. Acked-by: Mikael Pettersson Signed-off-by: Russell King --- arch/arm/kernel/elf.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'arch/arm') diff --git a/arch/arm/kernel/elf.c b/arch/arm/kernel/elf.c index 513f332..8484909 100644 --- a/arch/arm/kernel/elf.c +++ b/arch/arm/kernel/elf.c @@ -21,12 +21,16 @@ int elf_check_arch(const struct elf32_hdr *x) eflags = x->e_flags; if ((eflags & EF_ARM_EABI_MASK) == EF_ARM_EABI_UNKNOWN) { + unsigned int flt_fmt; + /* APCS26 is only allowed if the CPU supports it */ if ((eflags & EF_ARM_APCS_26) && !(elf_hwcap & HWCAP_26BIT)) return 0; + flt_fmt = eflags & (EF_ARM_VFP_FLOAT | EF_ARM_SOFT_FLOAT); + /* VFP requires the supporting code */ - if ((eflags & EF_ARM_VFP_FLOAT) && !(elf_hwcap & HWCAP_VFP)) + if (flt_fmt == EF_ARM_VFP_FLOAT && !(elf_hwcap & HWCAP_VFP)) return 0; } return 1; -- cgit v1.1