[src/trunk]: src/external/gpl3/gcc various updates, thanks to those who provi...

[mrg <mrg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/da3bdca4d70c
branches:  trunk
changeset: 378556:da3bdca4d70c
user:      mrg <mrg%NetBSD.org@localhost>
date:      Sat Apr 17 01:59:41 2021 +0000

description:
various updates, thanks to those who provided feedback.

- powerpc ports work
- m68k ports work, x68k has a new caveat
- hppa works
- mips64eb vs UVMHIST has been fix
- i386 reboot problem fixed (cardbus issue, not GCC related)

diffstat:

 external/gpl3/gcc/README.gcc10 |  48 ++++++++++++++---------------------------
 1 files changed, 17 insertions(+), 31 deletions(-)

diffs (88 lines):

diff -r 47cd5a9e40ec -r da3bdca4d70c external/gpl3/gcc/README.gcc10
--- a/external/gpl3/gcc/README.gcc10    Sat Apr 17 01:53:58 2021 +0000
+++ b/external/gpl3/gcc/README.gcc10    Sat Apr 17 01:59:41 2021 +0000
@@ -1,4 +1,4 @@
-$NetBSD: README.gcc10,v 1.9 2021/04/15 05:12:57 mrg Exp $
+$NetBSD: README.gcc10,v 1.10 2021/04/17 01:59:41 mrg Exp $
 
 
 new stuff:
@@ -49,17 +49,17 @@ earmv7              y       b       y       y               y               ?       ?       ?
 earmv7eb       y       b       y       y               y               ?       ?       ?
 earmv7hf       y       y       y       y               y               y       y       n
 earmv7hfeb     y       b       y       y               y               ?       ?       ?
-hppa           y       b       y       y               y               ?       ?       ?
+hppa           y       y       y       y               y               y       ?       ?
 i386           y       y       y       y               y               y       n[8]    ?
 ia64           y       y       y       y               y               ?       N/A     n
 m68000         y       b       y       y               n[1]            ?       ?       ?
-m68k           y       y       y       y               y[9]            y       ?       ?
+m68k           y       y       y       y               y[9]            y       n       n
 mipseb         y       y       y       y               y               y       ?       ?
 mipsel         y       y       y       y               y               y       ?       ?
-mips64eb       y       y       y       y               y               n[4]    ?       ?
+mips64eb       y       y       y       y               y               y       ?       ?
 mips64el       y       b       y       y               y               y       ?       ?
-powerpc                y       b       y       y               y               n[2]    ?       ?
-powerpc64      y       b       y       y               y               N/A     N/A     ?
+powerpc                y       b       y       y               y               y       ?       n
+powerpc64      y       b       y       y               y               N/A     N/A     n
 sh3eb          y       b       y       y               y               ?       ?       ?
 sh3el          y       y       y       y               y               y       y[7]    ?
 sparc          y       y       y       y               y               y       y       n
@@ -74,36 +74,22 @@ coldfire    ?       N/A     ?       ?               ?               N/A     N/A
 architecture   tools   kernels libgcc  native-gcc      make release    runs    atf
 
 [1] - ramdisk.fs is too large, needs fixing.
-[2] - powerpc ports have regressions; fixes incoming from rin@
 [3] - missing __aarch64_swp1_acq in kernels.  missing lse.S in libgcc.
-[4] - edgerouter lite3 crashes early in boot:
-      [   1.0000000] u-boot bootmem desc @ 0x24108 version 3.0
-      [   1.0000000] phys segment: 0xfc000 @ 0x102000
-      [   1.0000000] adding 0xfc000 @ 0x102000 to freelist 3
-      [   1.0000000] phys segment: 0x7276000 @ 0xe8a000
-      [   1.0000000] adding 0x7276000 @ 0xe8a000 to freelist 3
-      [   1.0000000] phys segment: 0x7efa000 @ 0x8102000
-      [   1.0000000] adding 0x7efa000 @ 0x8102000 to freelist 3
-      [   1.0000000] phys segment: 0xff00000 @ 0x410000000
-      [   1.0000000] adding 0xff00000 @ 0x410000000 to freelist 0
-      [   1.0000000] pid 0(system): trap: cpu0, TLB miss (load or instr. fetch) in kernel mode
-      [   1.0000000] status=0xa3, cause=0x8, epc=0xffffffff802564d4, vaddr=0
-      [   1.0000000] tf=0x9800000000165bb0 ksp=0x9800000000165cf0 ra=0xffffffff80256470 ppl=0
-      [   1.0000000] kernel: TLB miss (load or instr. fetch) trap
-      Stopped in pid 0.0 (system) at  ffffffff802564d4:       sw      zero,16(s0)
-      0x9800000000165cf0: 0xffffffff802563+0xd8 (0xffffffff80000000,0,0,0xc000000008000000) ra 0xffffffff803edd18 sz 0
-      0x9800000000165cf0: 0xffffffff803edc+0x84 (0xffffffff80000000,0,0,0xc000000008000000) ra 0 sz 0
-    - OCTEON kernel seems OK, something in my private configuration?
 [6] - vax vs c++ exceptions issue, same as it ever was
 [7] - fails just as poorly in gxemul/landisk as GCC 9
-[8] - i386 seems to have a signal delivery issue.  GCC 9 or 10 kernels are
-      unable to reboot properly, and GCC 10 atf runs hang in signal delivery.
-      bisection so far has reduced bug introduction between 2020-05-08 and
-      2020-05-15.  possibly pthread or condvar changes in this period.
+[8] - i386 seems to have a signal delivery issue.  pthread tests hang and then
+      complain with eg:
+         threads_and_exec: q[ 627.6700846] sorry, pid 3154 was killed: orphaned traced process
+      this problem occurs with GCC 9 as well.
 [9] - x68k/stand fails with:
       link  loadbsd/loadbsd.x
       loadbsd1: program header #1 is not loadable
-      may be due to it pulling in libc sources that get TLS marked?
+      problem is understood (thanks tsutsui@): previously loadbsd was linked
+      against normal userland libc components for m68k, which allows it to
+      detect running on m68000 CPU and sanely fail, instead of an barf error.
+      new gcc built libc includes TLS support, that isn't compatible with this
+      and the conversion process fails.  can be fixed by using libkern instead,
+      and accepting the poor error on m68000.
 
 
 
@@ -114,7 +100,7 @@ CPU         platform list
 ---            -------- ----
                acorn32         cats    epoc32  evbarm-eb       evbarm-el       hpcarm          iyonix          netwinder       shark           zaurus
 earmv4:                y               y       y       y               y               y                               y               y                
-earm:                                          r               y                               y                                               y
+earm:                                          y               y                               y                                               y
 earmhf:                                                y               y                                                                                
 earmv6:                                                y               y
 earmv6hf:                                      y               y