This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug target/57339] [SH] Wrong ISR FPU register save/restore
- From: "urjaman at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 24 Nov 2013 13:30:37 +0000
- Subject: [Bug target/57339] [SH] Wrong ISR FPU register save/restore
- Auto-submitted: auto-generated
- References: <bug-57339-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57339
Urja Rannikko <urjaman at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |urjaman at gmail dot com
--- Comment #2 from Urja Rannikko <urjaman at gmail dot com> ---
(In reply to Oleg Endo from comment #0)
> On SH2A and SH2E R0 is not a banked register and must be pushed before
> dealing with the FP regs.
This is false for atleast SH2A, that is, r0 is a banked register on SH2A.
I dont know about SH2E.
A small quote from the sh2a software manual (2.2.6 Register Banks) (Rev 3.00):
"For the nineteen 32-bit registers comprising general registers R0 to R14,
control register GBR, and system registers MACH, MACL, and PR, high-speed
register saving and restoration can be carried out using a register bank. "