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ARM: 9293/1: vfp: Pass successful return address via register R3
authorArd Biesheuvel <ardb@kernel.org>
Tue, 21 Mar 2023 11:01:51 +0000 (12:01 +0100)
committerRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
Tue, 11 Apr 2023 10:07:10 +0000 (11:07 +0100)
commit3a2bdad0b46649cc73fb3b3f9e2b91ef97a7fa63
tree317ce18fd4ae43d09d2b28c49b423def4563de2btree | snapshot
parentdae904d96ad6a5fa79bd9d99a3decf93685d398bcommit | diff
ARM: 9293/1: vfp: Pass successful return address via register R3

In preparation for reimplementing the do_vfp()->vfp_support_entry()
handover in C code, switch to using R3 to pass the 'success' return
address, rather than R9, as it cannot be used for parameter passing.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
arch/arm/vfp/entry.S diff | blob | history
arch/arm/vfp/vfphw.S diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git