Hi Russell,
On 01.07.2014 18:19, Russell King wrote:
ARMv6 and greater introduced a new instruction (bx) which can be used
to return from function calls. Recent CPUs perform better when the
bx lr instruction is used rather than the mov pc, lr instruction,
and this sequence is strongly
Russell King rmk+ker...@arm.linux.org.uk writes:
ARMv6 and greater introduced a new instruction (bx) which can be used
to return from function calls. Recent CPUs perform better when the
bx lr instruction is used rather than the mov pc, lr instruction,
and this sequence is strongly
On Tue, Jul 01, 2014 at 05:42:42PM +0100, Måns Rullgård wrote:
Russell King rmk+ker...@arm.linux.org.uk writes:
ARMv6 and greater introduced a new instruction (bx) which can be used
to return from function calls. Recent CPUs perform better when the
bx lr instruction is used rather than
Russell King - ARM Linux li...@arm.linux.org.uk writes:
On Tue, Jul 01, 2014 at 05:42:42PM +0100, Måns Rullgård wrote:
Russell King rmk+ker...@arm.linux.org.uk writes:
ARMv6 and greater introduced a new instruction (bx) which can be used
to return from function calls. Recent CPUs perform
Hi Mans,
On Tue, Jul 01, 2014 at 06:24:43PM +0100, Måns Rullgård wrote:
Russell King - ARM Linux li...@arm.linux.org.uk writes:
As you point out, bx lr /may/ be treated specially (I've actually been
Most, if not all, Cortex-A cores do this according the public TRMs.
They also do the same
On 07/01/2014 10:19 AM, Russell King wrote:
ARMv6 and greater introduced a new instruction (bx) which can be used
to return from function calls. Recent CPUs perform better when the
bx lr instruction is used rather than the mov pc, lr instruction,
and this sequence is strongly recommended to
Will Deacon will.dea...@arm.com writes:
Hi Mans,
On Tue, Jul 01, 2014 at 06:24:43PM +0100, Måns Rullgård wrote:
Russell King - ARM Linux li...@arm.linux.org.uk writes:
As you point out, bx lr /may/ be treated specially (I've actually been
Most, if not all, Cortex-A cores do this
Russell King rmk+ker...@arm.linux.org.uk writes:
ARMv6 and greater introduced a new instruction (bx) which can be used
to return from function calls. Recent CPUs perform better when the
bx lr instruction is used rather than the mov pc, lr instruction,
and this sequence is strongly
On Tue, 1 Jul 2014, Will Deacon wrote:
Hi Mans,
On Tue, Jul 01, 2014 at 06:24:43PM +0100, Måns Rullgård wrote:
Russell King - ARM Linux li...@arm.linux.org.uk writes:
As you point out, bx lr /may/ be treated specially (I've actually been
Most, if not all, Cortex-A cores do this
