CVS commit: src/sys/arch/aarch64/aarch64

["Rin Okuyama" <rin%netbsd.org@localhost>]

Module Name:    src
Committed By:   rin
Date:           Thu Oct 15 22:52:08 UTC 2020

Modified Files:
        src/sys/arch/aarch64/aarch64: vm_machdep.c

Log Message:
Fix clone(2) for COMPAT_NETBSD32.

(1) Set r13 (sp for arm32 processes) appropriately when stack is
    specified to fork1().

(2) For arm32 processes, align stack to 8-byte boundary, instead of
    16-byte for native aarch64 processes, to match our 32-bit ABI:

https://nxr.netbsd.org/xref/src/sys/arch/arm/arm32/vm_machdep.c#150

Note that sp alignment checking is disabled in aarch32 mode, and
this works fine with AARCH64_EL0_STACK_ALIGNMENT_CHECK option.

OK ryo


To generate a diff of this commit:
cvs rdiff -u -r1.8 -r1.9 src/sys/arch/aarch64/aarch64/vm_machdep.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.