Hi Matoro, On 11/25/22 19:00, matoro wrote:
Hi, I was recommended to ask here but I'm trying to enable gccgo to run on parisc,
That would be fantastic!!!
however I am not sure what the proper values should be for the arch configuration settings. The description is as follows: # Code in Makefile.am will invoke this script with two arguments. # The first is a GOARCH value. The second is a keyword. # The script will print the value of that keyword for that GOARCH. # Keywords: # - bigendian: true or false
true
# - cachelinesize: the cache line size in bytes # (for performance only; it's not essential to get this right)
32
# - defaultphyspagesize: the default physical page size in bytes # (not currently used, but maybe some day)
4096 bytes
# - family: the processor family, from ALLGOARCHFAMILY in configure.ac
I think "hppa", but could be "parisc" too... uname reports back parisc (on 32bit kernel) or parisc64 (on 64-bit kernel).
# - int64align: alignment of int64 type in bytes
8 bytes
# - maxalign: maximum alignment of values of Go types in bytes
?
# - minframesize: size of smallest possible function frame in bytes # (not currently used, may never be used)
I think 64 bytes.
# - pcquantum: minimum size of a single instruction in bytes
Every assembler statement is always 4 bytes.
# - ptrsize: size of a pointer in bytes
4 bytes (would be 8 bytes for 64-bit userspace which we don't have yet).
There is also an undocumented "stackalign" variable.
64 bytes.
# Default values bigendian=false cachelinesize=64 defaultphyspagesize=4096 family=unknown int64align=8 maxalign=8 minframesize=0 pcquantum=1 ptrsize=8 stackalign=8 This was what I first attempted to set, according to a brief skim of the ISA manual: diff --git a/libgo/goarch.sh b/libgo/goarch.sh index 977f318b3..ed40815ac 100755 --- a/libgo/goarch.sh +++ b/libgo/goarch.sh @@ -88,6 +88,16 @@ case $goarch in ;; esac ;; + hppa) + family=HPPA + bigendian=true + defaultphyspagesize=4096 + minframesize=16
this should be 64bytes.
+ int64align=8 + stackalign=4 + pcquantum=4 + ptrsize=4 + ;; ia64) family=IA64 cachelinesize=128 However this was clearly wrong, because while it did build, the resulting binary immediately segfaults. unexpected fault address 0x33d8effc fatal error: fault [signal SIGSEGV: segmentation violation code=0x1 addr=0x33d8effc pc=0xf58f4284] goroutine 4 [running]: runtime.dopanic__m /var/tmp/portage/sys-devel/gcc-12.2.1_p20221008/work/gcc-12-20221008/libgo/go/runtime/panic.go:1207 runtime.fatalthrow /var/tmp/portage/sys-devel/gcc-12.2.1_p20221008/work/gcc-12-20221008/libgo/go/runtime/panic.go:1073 runtime.throw /var/tmp/portage/sys-devel/gcc-12.2.1_p20221008/work/gcc-12-20221008/libgo/go/runtime/panic.go:1044 runtime.sigpanic /var/tmp/portage/sys-devel/gcc-12.2.1_p20221008/work/gcc-12-20221008/libgo/go/runtime/signal_unix.go:714 net_1http.connectMethod.scheme /var/tmp/portage/sys-devel/gcc-12.2.1_p20221008/work/gcc-12-20221008/libgo/go/net/http/transport.go:1829 net_1http.Transport.dialConn /var/tmp/portage/sys-devel/gcc-12.2.1_p20221008/work/gcc-12-20221008/libgo/go/net/http/transport.go:1612 net_1http.Transport.dialConnFor /var/tmp/portage/sys-devel/gcc-12.2.1_p20221008/work/gcc-12-20221008/libgo/go/net/http/transport.go:1449 runtime.kickoff /var/tmp/portage/sys-devel/gcc-12.2.1_p20221008/work/gcc-12-20221008/libgo/go/runtime/proc.go:1316 created by net_1http.Transport.queueForDial /var/tmp/portage/sys-devel/gcc-12.2.1_p20221008/work/gcc-12-20221008/libgo/go/net/http/transport.go:1418 +0x37b Is there anybody who might be able to advise on what these values should be for parisc?
Helge
