CVS commit: [netbsd-9] src/sys/arch/aarch64

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Fri Jan  1 12:58:36 UTC 2021

Modified Files:
        src/sys/arch/aarch64/aarch64 [netbsd-9]: netbsd32_machdep.c trap.c
        src/sys/arch/aarch64/include [netbsd-9]: netbsd32_machdep.h ptrace.h

Log Message:
Pull up following revision(s) (requested by rin in ticket #1172):

        sys/arch/aarch64/aarch64/trap.c: revision 1.30
        sys/arch/aarch64/include/ptrace.h: revision 1.10
        sys/arch/aarch64/include/netbsd32_machdep.h: revision 1.4 (patch)
        sys/arch/aarch64/aarch64/netbsd32_machdep.c: revision 1.14
        sys/arch/aarch64/aarch64/netbsd32_machdep.c: revision 1.15

Add support of ptrace(2) for COMPAT_NETBSD32.

Now, GDB for arm32 is usable for debugging 32bit applications.
OK ryo@

For rev 1.14 and before, netbsd32_process_write_regs() returns EINVAL
if non-modifiable bits are set in CPSR.
Instead, mask out non-modifiable bits and make this function success
regardless of value in CPSR. New behavior matches that of arm:
https://nxr.netbsd.org/xref/src/sys/arch/arm/arm/process_machdep.c#187

This fixes lib/libc/sys/t_ptrace_wait*:access_regs6 tests, in which
register contents retrieved by PT_GETREGS are set back by PT_SETREGS.

No new regression is observed in full ATF run.

OK ryo


To generate a diff of this commit:
cvs rdiff -u -r1.7.2.1 -r1.7.2.2 \
    src/sys/arch/aarch64/aarch64/netbsd32_machdep.c
cvs rdiff -u -r1.17.4.3 -r1.17.4.4 src/sys/arch/aarch64/aarch64/trap.c
cvs rdiff -u -r1.2 -r1.2.4.1 src/sys/arch/aarch64/include/netbsd32_machdep.h
cvs rdiff -u -r1.9 -r1.9.2.1 src/sys/arch/aarch64/include/ptrace.h

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