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Running armv7 binaries on armv8

Hi Experts,

I have binaries built for armv7 architecture, without rebuilding binaries can I run on armv8?. I think its possible, but wanted confirm is there any limitation?

Thanks,

Veeranna

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0 Harish G over 9 years ago in reply to Martin Weidmann

Hi Martin,
can you please tell which register to modify in El1 to indicate El0 is AArch32 bit mode (location of register width bit's)?
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0 Harish G over 9 years ago in reply to Martin Weidmann

Hi Martin,
can you please tell which register to modify in El1 to indicate El0 is AArch32 bit mode (location of register width bit's)?
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0 Martin Weidmann over 9 years ago in reply to Harish G

If EL1 is using AArch64, to get to EL0 you need to perform an exception return. The Execution state of EL0 is set by the SPSR_EL1 value when you perform the exception return. If SPSR_EL1[4:0] ==b00000, EL0 uses AArch64. If SPSR_EL1[4:0]==b10000, EL0 uses AArch32
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