CVS log for src/sys/arch/aarch64/aarch64/netbsd32_machdep.c

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aarch64: cpu_getmcontext32: Fix sign compare for ras_lookup(9)

Now, compare with `(void *)-1` is done for x0, instead of w0.
No binary changes except for that.

Found by WARNS=5 build (as a module).

Remove ryo@'s mail addresses.

Trailing whitespace

COMPAT_NETBSD32 is all about running the 32-bit flavor of native
binaries on a 64-bit platform[*], as such:
- Make the logic about which "sendsig" flavor to call MI (as it is in the
  native 64-bit environment) and follow the same rules as the native 32-bit
  environment.
- Make COMPAT_NETBSD32 x COMPAT_16 work the same as it would in the
  native 32-bit environment by providing a netbsd32_sendsig_sigcontext_16_hook,
  rather than overriding the entire sendsig logic with a netbsd32_sendsig_hook.
- In netbsd32___sigaction_sigtramp(), make sure the compat_netbsd32_16
  module is loaded if the trampoline version specifies a sigcontext style
  handler, otherwise return EINVAL so that libc can try again with siginfo
  style.

[*] ...except for arm32, which uses it to mean "run 32-bit OABI binaries
from the 32-bit EABI environment".  Doing it this way was arguably a mistake,
but we are stuck with it for now, so support it by providing a machine-
dependent override for netbsd32_sendsig() that also disables the corresponding
logic in netbsd32___sigaction_sigtramp().

Fixes PR kern/56487.

Use "stack_t" instead of "struct sigaltstack", as the former is the
newer standardized name.  NFC.

Use the signal trampoline version constants from <sys/signal.h>.

use lwp_trapframe() macro. NFC.

Sync w/ HEAD.

Pull up following revision(s) (requested by rin in ticket #1277):

	sys/arch/aarch64/aarch64/netbsd32_machdep.c: revision 1.18

Fix conversion between aarch64 and aarch32 fpreg's; in aarch32 mode,
d0-d31 are packed into v0-v15 (== q0-q15).

This fixes crashes in VFP-optimized codes running on COMPAT_NETBSD32.

OK ryo

sync with head

Fix conversion between aarch64 and aarch32 fpreg's; in aarch32 mode,
d0-d31 are packed into v0-v15 (== q0-q15).

This fixes crashes in VFP-optimized codes running on COMPAT_NETBSD32.

OK ryo

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

Sync w/ HEAD.

s:aarch64/cpufunc.h:arm/cpufunc.h:

a baby step in the grand arm header unification challenge

Call netbsd32_adjust_limits() in netbsd32_setregs() for sure,
as done for amd64 and sparc64.

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

Add support of ptrace(2) for COMPAT_NETBSD32.

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

OK ryo@

Not only the kernel thread, but also the userland PAC keys
(APIA,APIB,APDA,APDB,APGA) are now randomly initialized at exec, and switched
when context switch.
userland programs are able to perform pointer authentication on ARMv8.3+PAC cpu.

reviewd by maxv@, thanks.

Pull up following revision(s) (requested by tnn in ticket #883):

	sys/arch/aarch64/aarch64/netbsd32_machdep.c: revision 1.11

fix inverted logic in NETBSD32 user signal stack handling (PR evbarm/55200)

Sync with bouyer-xenpvh-base2 (HEAD)

Typo in comment

fix inverted logic in NETBSD32 user signal stack handling (PR evbarm/55200)

Mostly merge changes from HEAD upto 20200411

Merge changes from current as of 20200406

Sync with head.

D means E here (aarch32), so don't check it. A-I-F are checked below
already, so drop the whole line.

PR port-arm/54702

Add support for earmv6hf binaries on COMPAT_NETBSD32 for aarch64:

- Emulate ARMv6 instructions with cache operations register (c7), that
  are deprecated since ARMv7, and disabled on ARMv8 with LP64 kernel.

- ep_machine_arch (default: earmv7hf) is copied from executables, as we
  do for mips64. "uname -p" reports earmv6hf if compiled for earmv6hf;
  configure scripts etc can determine the appropriate architecture.

Many thanks to ryo@ for helping me to add support of Thumb-mode,
as well as providing exhaustive test cases:

  https://github.com/ryo/mcr_test/

We've confirmed:

- Emulation works in Thumb-mode.
- T32 16-bit length illegal instruction results in SIGILL, even if
  it is located nearby a boundary b/w mapped and unmapped pages.
- T32 32-bit instruction results in SIGSEGV if it is located across
  a boundary b/w mapped and unmapped pages.

XXX
pullup to netbsd-9

Move all non-emulation-specific coredump code into the coredump module,
and remove all #ifdef COREDUMP conditional compilation.  Now, the
coredump module is completely separated from the emulation modules, and
they can all be independently loaded and unloaded.

Welcome to 9.99.18 !

Fix STACK_ALIGN "bytes" argument which actually should be a mask.

Spotted by Mark Millard (marklmi at yahoo.com)

Sync with HEAD

COMPAT_NETBSD32 to work on also thumbmode

Local variable p is __diagused.

Merge the [pgoyette-compat] branch

Sync with HEAD, resolve a few conflicts

Fix widespread leak in the sendsig_siginfo() functions. sigframe_siginfo
has padding, so zero it out properly. While here I'm also zeroing out some
other things in several ports, for safety. Same problem in netbsd32, so
fix that too.

I can't compile-test on each architecture, but there should be no
breakage (tm).

Overall this fixes at least 14 info leaks. Prompted by the discovery by
KLEAK of a leak in amd64's sendsig_siginfo.

Sync with head

add initial support of COMPAT_NETBSD32 on AArch64.
arm ELF32 EABI binaries could be execute in AArch32 state on AArch64. A32 THUMB mode is not supported yet.

Use a hook callback to allow sparc fpu code to determine if a process
is running under sunos emulation (in which case, fpu cleanup uses a
different set of fpu_codes[]).

Implement dummy netbsd32_compat_{13,16} routines.  aarch64 doesn't have
compat going that far back, but the build infrastructure expects to see
these sources and *_{init,fini} symbols.

Sync with HEAD.  77 conflicts resolved - all of them $NetBSD$

file netbsd32_machdep.c was added on branch pgoyette-compat on 2018-04-07 04:12:10 +0000

Add initial support for ARMv8 (AARCH64) (by nisimura@ and ryo@)

- sys/arch/evbarm64 is gone and integrated into sys/arch/evbarm. (by skrll@)
- add support fdt. evbarm/conf/GENERIC64 fdt (bcm2837,sunxi,tegra) based generic 64bit kernel config. (by skrll@, jmcneill@)