mirror of
https://github.com/torvalds/linux.git
synced 2024-11-13 23:51:39 +00:00
6d685e5318
These are all functions which are invoked from elsewhere, so annotate them as global using the new SYM_FUNC_START and their ENDPROC's by SYM_FUNC_END. Now, ENTRY/ENDPROC can be forced to be undefined on X86, so do so. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Allison Randal <allison@lohutok.net> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Andy Shevchenko <andy@infradead.org> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Bill Metzenthen <billm@melbpc.org.au> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Darren Hart <dvhart@infradead.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-arch@vger.kernel.org Cc: linux-crypto@vger.kernel.org Cc: linux-efi <linux-efi@vger.kernel.org> Cc: linux-efi@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Pavel Machek <pavel@ucw.cz> Cc: platform-driver-x86@vger.kernel.org Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Cc: x86-ml <x86@kernel.org> Link: https://lkml.kernel.org/r/20191011115108.12392-28-jslaby@suse.cz
90 lines
2.5 KiB
ArmAsm
90 lines
2.5 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
|
|
.file "shr_Xsig.S"
|
|
/*---------------------------------------------------------------------------+
|
|
| shr_Xsig.S |
|
|
| |
|
|
| 12 byte right shift function |
|
|
| |
|
|
| Copyright (C) 1992,1994,1995 |
|
|
| W. Metzenthen, 22 Parker St, Ormond, Vic 3163, |
|
|
| Australia. E-mail billm@jacobi.maths.monash.edu.au |
|
|
| |
|
|
| Call from C as: |
|
|
| void shr_Xsig(Xsig *arg, unsigned nr) |
|
|
| |
|
|
| Extended shift right function. |
|
|
| Fastest for small shifts. |
|
|
| Shifts the 12 byte quantity pointed to by the first arg (arg) |
|
|
| right by the number of bits specified by the second arg (nr). |
|
|
| |
|
|
+---------------------------------------------------------------------------*/
|
|
|
|
#include "fpu_emu.h"
|
|
|
|
.text
|
|
SYM_FUNC_START(shr_Xsig)
|
|
push %ebp
|
|
movl %esp,%ebp
|
|
pushl %esi
|
|
movl PARAM2,%ecx
|
|
movl PARAM1,%esi
|
|
cmpl $32,%ecx /* shrd only works for 0..31 bits */
|
|
jnc L_more_than_31
|
|
|
|
/* less than 32 bits */
|
|
pushl %ebx
|
|
movl (%esi),%eax /* lsl */
|
|
movl 4(%esi),%ebx /* midl */
|
|
movl 8(%esi),%edx /* msl */
|
|
shrd %cl,%ebx,%eax
|
|
shrd %cl,%edx,%ebx
|
|
shr %cl,%edx
|
|
movl %eax,(%esi)
|
|
movl %ebx,4(%esi)
|
|
movl %edx,8(%esi)
|
|
popl %ebx
|
|
popl %esi
|
|
leave
|
|
ret
|
|
|
|
L_more_than_31:
|
|
cmpl $64,%ecx
|
|
jnc L_more_than_63
|
|
|
|
subb $32,%cl
|
|
movl 4(%esi),%eax /* midl */
|
|
movl 8(%esi),%edx /* msl */
|
|
shrd %cl,%edx,%eax
|
|
shr %cl,%edx
|
|
movl %eax,(%esi)
|
|
movl %edx,4(%esi)
|
|
movl $0,8(%esi)
|
|
popl %esi
|
|
leave
|
|
ret
|
|
|
|
L_more_than_63:
|
|
cmpl $96,%ecx
|
|
jnc L_more_than_95
|
|
|
|
subb $64,%cl
|
|
movl 8(%esi),%eax /* msl */
|
|
shr %cl,%eax
|
|
xorl %edx,%edx
|
|
movl %eax,(%esi)
|
|
movl %edx,4(%esi)
|
|
movl %edx,8(%esi)
|
|
popl %esi
|
|
leave
|
|
ret
|
|
|
|
L_more_than_95:
|
|
xorl %eax,%eax
|
|
movl %eax,(%esi)
|
|
movl %eax,4(%esi)
|
|
movl %eax,8(%esi)
|
|
popl %esi
|
|
leave
|
|
ret
|
|
SYM_FUNC_END(shr_Xsig)
|