* Registers used for exception handling on Linux/m68k?
@ 2020-09-29 15:22 John Paul Adrian Glaubitz
0 siblings, 0 replies; only message in thread
From: John Paul Adrian Glaubitz @ 2020-09-29 15:22 UTC (permalink / raw)
To: Debian m68k; +Cc: linux-m68k, gcc
Hello!
I'm looking for an information regarding exception handling on Linux/m68k, in particular
I need to know what registers are used by the ABI in order to implement the functions
"getExceptionPointerRegister" and "getExceptionSelectorRegister" in the M680x0 backend
in LLVM [1], [2].
I looked into the GCC source code to find the corresponding parts but I could only find
the macros prefixed with "EH_" [4] which I didn't fully understand.
Can any of the experienced GCC/m68k folks tell me which registers in [5] I need to use?
Adrian
> [1] https://github.com/M680x0/M680x0-mono-repo/issues/15
> [2] https://github.com/llvm/llvm-project/blob/master/llvm/lib/Target/Sparc/SparcISelLowering.h#L107
> [3] https://github.com/llvm/llvm-project/blob/ee34d9b210cb5a6d14fe069e2e2ae75b0548dba9/llvm/lib/Target/Sparc/SparcRegisterInfo.td#L151
> [4] https://github.com/gcc-mirror/gcc/blob/master/gcc/config/m68k/m68k.h#L741
> [5] https://github.com/M680x0/M680x0-mono-repo/blob/master/llvm/lib/Target/M680x0/M680x0RegisterInfo.td
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - glaubitz@debian.org
`. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2020-09-29 15:22 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-09-29 15:22 Registers used for exception handling on Linux/m68k? John Paul Adrian Glaubitz
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.