mirror of
https://git.rtems.org/rtems-libbsd/
synced 2025-07-25 05:33:18 +08:00
Removed in_cksum_arm.S file.
This commit is contained in:
Kevin Polulak
Jennifer Averett
parent
59f69ea3cd
commit
9fc8b41074
1
Makefile
1
Makefile
@ -420,7 +420,6 @@ C_FILES += freebsd/dev/bce/if_bce.c
|
|||||||
C_FILES += freebsd/dev/bfe/if_bfe.c
|
C_FILES += freebsd/dev/bfe/if_bfe.c
|
||||||
C_FILES += freebsd/dev/bge/if_bge.c
|
C_FILES += freebsd/dev/bge/if_bge.c
|
||||||
ifeq ($(RTEMS_CPU), arm)
|
ifeq ($(RTEMS_CPU), arm)
|
||||||
C_FILES += freebsd/arm/arm/in_cksum_arm.S
|
|
||||||
C_FILES += freebsd/arm/arm/in_cksum.c
|
C_FILES += freebsd/arm/arm/in_cksum.c
|
||||||
endif
|
endif
|
||||||
ifeq ($(RTEMS_CPU), i386)
|
ifeq ($(RTEMS_CPU), i386)
|
||||||
|
|||||||
@ -89,7 +89,7 @@ def parseArguments():
|
|||||||
usage()
|
usage()
|
||||||
sys.exit(2)
|
sys.exit(2)
|
||||||
for o, a in opts:
|
for o, a in opts:
|
||||||
if o == "-v":
|
if o in ("-v", "--verbose"):
|
||||||
isVerbose = True
|
isVerbose = True
|
||||||
elif o in ("-h", "--help", "-?"):
|
elif o in ("-h", "--help", "-?"):
|
||||||
usage()
|
usage()
|
||||||
@ -106,8 +106,6 @@ def parseArguments():
|
|||||||
isForward = False
|
isForward = False
|
||||||
elif o in ("-r", "--rtems"):
|
elif o in ("-r", "--rtems"):
|
||||||
RTEMS_DIR = a
|
RTEMS_DIR = a
|
||||||
elif o in ("-r", "--rtems"):
|
|
||||||
RTEMS_DIR = a
|
|
||||||
elif o in ("-f", "--freebsd"):
|
elif o in ("-f", "--freebsd"):
|
||||||
FreeBSD_DIR = a
|
FreeBSD_DIR = a
|
||||||
else:
|
else:
|
||||||
@ -2032,7 +2030,6 @@ in_cksum.addCPUDependentHeaderFiles(
|
|||||||
in_cksum.addCPUDependentSourceFiles(
|
in_cksum.addCPUDependentSourceFiles(
|
||||||
'arm',
|
'arm',
|
||||||
[
|
[
|
||||||
'arm/arm/in_cksum_arm.S',
|
|
||||||
'arm/arm/in_cksum.c',
|
'arm/arm/in_cksum.c',
|
||||||
]
|
]
|
||||||
)
|
)
|
||||||
|
|||||||
@ -1,341 +0,0 @@
|
|||||||
#include <freebsd/machine/rtems-bsd-config.h>
|
|
||||||
|
|
||||||
/* $NetBSD: in_cksum_arm.S,v 1.2 2003/09/23 10:01:36 scw Exp $ */
|
|
||||||
|
|
||||||
/*-
|
|
||||||
* Copyright 2003 Wasabi Systems, Inc.
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* Written by Steve C. Woodford for Wasabi Systems, Inc.
|
|
||||||
*
|
|
||||||
* Redistribution and use in source and binary forms, with or without
|
|
||||||
* modification, are permitted provided that the following conditions
|
|
||||||
* are met:
|
|
||||||
* 1. Redistributions of source code must retain the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer.
|
|
||||||
* 2. Redistributions in binary form must reproduce the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer in the
|
|
||||||
* documentation and/or other materials provided with the distribution.
|
|
||||||
* 3. All advertising materials mentioning features or use of this software
|
|
||||||
* must display the following acknowledgement:
|
|
||||||
* This product includes software developed for the NetBSD Project by
|
|
||||||
* Wasabi Systems, Inc.
|
|
||||||
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
|
||||||
* or promote products derived from this software without specific prior
|
|
||||||
* written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
|
|
||||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
||||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
||||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
|
|
||||||
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
||||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
||||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
||||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
||||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
||||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
||||||
* POSSIBILITY OF SUCH DAMAGE.
|
|
||||||
*
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Hand-optimised in_cksum() and in4_cksum() implementations for ARM/armv5e
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include <freebsd/local/opt_inet.h>
|
|
||||||
|
|
||||||
#include <freebsd/machine/asm.h>
|
|
||||||
#include <freebsd/local/assym.s>
|
|
||||||
__FBSDID("$FreeBSD$");
|
|
||||||
|
|
||||||
/*
|
|
||||||
* int in_cksum(struct mbuf *m, int len)
|
|
||||||
*
|
|
||||||
* Entry:
|
|
||||||
* r0 m
|
|
||||||
* r1 len
|
|
||||||
*
|
|
||||||
* NOTE: Assumes 'm' is *never* NULL.
|
|
||||||
*/
|
|
||||||
/* LINTSTUB: Func: int in_cksum(struct mbuf *, int) */
|
|
||||||
ENTRY(in_cksum)
|
|
||||||
stmfd sp!, {r4-r11,lr}
|
|
||||||
mov r8, #0x00
|
|
||||||
mov r9, r1
|
|
||||||
mov r10, #0x00
|
|
||||||
mov ip, r0
|
|
||||||
|
|
||||||
.Lin_cksum_loop:
|
|
||||||
ldr r1, [ip, #(M_LEN)]
|
|
||||||
ldr r0, [ip, #(M_DATA)]
|
|
||||||
ldr ip, [ip, #(M_NEXT)]
|
|
||||||
.Lin_cksum_entry4:
|
|
||||||
cmp r9, r1
|
|
||||||
movlt r1, r9
|
|
||||||
sub r9, r9, r1
|
|
||||||
eor r11, r10, r0
|
|
||||||
add r10, r10, r1
|
|
||||||
adds r2, r1, #0x00
|
|
||||||
blne _ASM_LABEL(L_cksumdata)
|
|
||||||
tst r11, #0x01
|
|
||||||
movne r2, r2, ror #8
|
|
||||||
adds r8, r8, r2
|
|
||||||
adc r8, r8, #0x00
|
|
||||||
cmp ip, #0x00
|
|
||||||
bne .Lin_cksum_loop
|
|
||||||
|
|
||||||
mov r1, #0xff
|
|
||||||
orr r1, r1, #0xff00
|
|
||||||
and r0, r8, r1
|
|
||||||
add r0, r0, r8, lsr #16
|
|
||||||
add r0, r0, r0, lsr #16
|
|
||||||
and r0, r0, r1
|
|
||||||
eor r0, r0, r1
|
|
||||||
ldmfd sp!, {r4-r11,pc}
|
|
||||||
|
|
||||||
|
|
||||||
ENTRY(do_cksum)
|
|
||||||
stmfd sp!, {r4-r7, lr}
|
|
||||||
bl L_cksumdata
|
|
||||||
mov r0, r2
|
|
||||||
ldmfd sp!, {r4-r7, pc}
|
|
||||||
/*
|
|
||||||
* The main in*_cksum() workhorse...
|
|
||||||
*
|
|
||||||
* Entry parameters:
|
|
||||||
* r0 Pointer to buffer
|
|
||||||
* r1 Buffer length
|
|
||||||
* lr Return address
|
|
||||||
*
|
|
||||||
* Returns:
|
|
||||||
* r2 Accumulated 32-bit sum
|
|
||||||
*
|
|
||||||
* Clobbers:
|
|
||||||
* r0-r7
|
|
||||||
*/
|
|
||||||
/* LINTSTUB: Ignore */
|
|
||||||
ASENTRY_NP(L_cksumdata)
|
|
||||||
#ifdef _ARM_ARCH_5E
|
|
||||||
pld [r0] /* Pre-fetch the start of the buffer */
|
|
||||||
#endif
|
|
||||||
mov r2, #0
|
|
||||||
|
|
||||||
/* We first have to word-align the buffer. */
|
|
||||||
ands r7, r0, #0x03
|
|
||||||
beq .Lcksumdata_wordaligned
|
|
||||||
rsb r7, r7, #0x04
|
|
||||||
cmp r1, r7 /* Enough bytes left to make it? */
|
|
||||||
blt .Lcksumdata_endgame
|
|
||||||
cmp r7, #0x02
|
|
||||||
ldrb r4, [r0], #0x01 /* Fetch 1st byte */
|
|
||||||
ldrgeb r5, [r0], #0x01 /* Fetch 2nd byte */
|
|
||||||
movlt r5, #0x00
|
|
||||||
ldrgtb r6, [r0], #0x01 /* Fetch 3rd byte */
|
|
||||||
movle r6, #0x00
|
|
||||||
/* Combine the three bytes depending on endianness and alignment */
|
|
||||||
#ifdef __ARMEB__
|
|
||||||
orreq r2, r5, r4, lsl #8
|
|
||||||
orreq r2, r2, r6, lsl #24
|
|
||||||
orrne r2, r4, r5, lsl #8
|
|
||||||
orrne r2, r2, r6, lsl #16
|
|
||||||
#else
|
|
||||||
orreq r2, r4, r5, lsl #8
|
|
||||||
orreq r2, r2, r6, lsl #16
|
|
||||||
orrne r2, r5, r4, lsl #8
|
|
||||||
orrne r2, r2, r6, lsl #24
|
|
||||||
#endif
|
|
||||||
subs r1, r1, r7 /* Update length */
|
|
||||||
RETeq /* All done? */
|
|
||||||
|
|
||||||
/* Buffer is now word aligned */
|
|
||||||
.Lcksumdata_wordaligned:
|
|
||||||
#ifdef _ARM_ARCH_5E
|
|
||||||
cmp r1, #0x04 /* Less than 4 bytes left? */
|
|
||||||
blt .Lcksumdata_endgame /* Yup */
|
|
||||||
|
|
||||||
/* Now quad-align, if necessary */
|
|
||||||
ands r7, r0, #0x04
|
|
||||||
ldrne r7, [r0], #0x04
|
|
||||||
subne r1, r1, #0x04
|
|
||||||
subs r1, r1, #0x40
|
|
||||||
blt .Lcksumdata_bigloop_end /* Note: C flag clear if branch taken */
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Buffer is now quad aligned. Sum 64 bytes at a time.
|
|
||||||
* Note: First ldrd is hoisted above the loop, together with
|
|
||||||
* setting r6 to zero to avoid stalling for results in the
|
|
||||||
* loop. (r7 is live, from above).
|
|
||||||
*/
|
|
||||||
ldrd r4, [r0], #0x08
|
|
||||||
mov r6, #0x00
|
|
||||||
.Lcksumdata_bigloop:
|
|
||||||
pld [r0, #0x18]
|
|
||||||
adds r2, r2, r6
|
|
||||||
adcs r2, r2, r7
|
|
||||||
ldrd r6, [r0], #0x08
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
ldrd r4, [r0], #0x08
|
|
||||||
adcs r2, r2, r6
|
|
||||||
adcs r2, r2, r7
|
|
||||||
ldrd r6, [r0], #0x08
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
ldrd r4, [r0], #0x08
|
|
||||||
adcs r2, r2, r6
|
|
||||||
adcs r2, r2, r7
|
|
||||||
pld [r0, #0x18]
|
|
||||||
ldrd r6, [r0], #0x08
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
ldrd r4, [r0], #0x08
|
|
||||||
adcs r2, r2, r6
|
|
||||||
adcs r2, r2, r7
|
|
||||||
ldrd r6, [r0], #0x08
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
adc r2, r2, #0x00
|
|
||||||
subs r1, r1, #0x40
|
|
||||||
ldrged r4, [r0], #0x08
|
|
||||||
bge .Lcksumdata_bigloop
|
|
||||||
|
|
||||||
adds r2, r2, r6 /* r6/r7 still need summing */
|
|
||||||
.Lcksumdata_bigloop_end:
|
|
||||||
adcs r2, r2, r7
|
|
||||||
adc r2, r2, #0x00
|
|
||||||
|
|
||||||
#else /* !_ARM_ARCH_5E */
|
|
||||||
|
|
||||||
subs r1, r1, #0x40
|
|
||||||
blt .Lcksumdata_bigloop_end
|
|
||||||
|
|
||||||
.Lcksumdata_bigloop:
|
|
||||||
ldmia r0!, {r3, r4, r5, r6}
|
|
||||||
adds r2, r2, r3
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
ldmia r0!, {r3, r4, r5, r7}
|
|
||||||
adcs r2, r2, r6
|
|
||||||
adcs r2, r2, r3
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
ldmia r0!, {r3, r4, r5, r6}
|
|
||||||
adcs r2, r2, r7
|
|
||||||
adcs r2, r2, r3
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
ldmia r0!, {r3, r4, r5, r7}
|
|
||||||
adcs r2, r2, r6
|
|
||||||
adcs r2, r2, r3
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
adcs r2, r2, r7
|
|
||||||
adc r2, r2, #0x00
|
|
||||||
subs r1, r1, #0x40
|
|
||||||
bge .Lcksumdata_bigloop
|
|
||||||
.Lcksumdata_bigloop_end:
|
|
||||||
#endif
|
|
||||||
|
|
||||||
adds r1, r1, #0x40
|
|
||||||
RETeq
|
|
||||||
cmp r1, #0x20
|
|
||||||
|
|
||||||
#ifdef _ARM_ARCH_5E
|
|
||||||
ldrged r4, [r0], #0x08 /* Avoid stalling pld and result */
|
|
||||||
blt .Lcksumdata_less_than_32
|
|
||||||
pld [r0, #0x18]
|
|
||||||
ldrd r6, [r0], #0x08
|
|
||||||
adds r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
ldrd r4, [r0], #0x08
|
|
||||||
adcs r2, r2, r6
|
|
||||||
adcs r2, r2, r7
|
|
||||||
ldrd r6, [r0], #0x08
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
adcs r2, r2, r6 /* XXX: Unavoidable result stall */
|
|
||||||
adcs r2, r2, r7
|
|
||||||
#else
|
|
||||||
blt .Lcksumdata_less_than_32
|
|
||||||
ldmia r0!, {r3, r4, r5, r6}
|
|
||||||
adds r2, r2, r3
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
ldmia r0!, {r3, r4, r5, r7}
|
|
||||||
adcs r2, r2, r6
|
|
||||||
adcs r2, r2, r3
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
adcs r2, r2, r7
|
|
||||||
#endif
|
|
||||||
adc r2, r2, #0x00
|
|
||||||
subs r1, r1, #0x20
|
|
||||||
RETeq
|
|
||||||
|
|
||||||
.Lcksumdata_less_than_32:
|
|
||||||
/* There are less than 32 bytes left */
|
|
||||||
and r3, r1, #0x18
|
|
||||||
rsb r4, r3, #0x18
|
|
||||||
sub r1, r1, r3
|
|
||||||
adds r4, r4, r4, lsr #1 /* Side effect: Clear carry flag */
|
|
||||||
addne pc, pc, r4
|
|
||||||
nop
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Note: We use ldm here, even on armv5e, since the combined issue/result
|
|
||||||
* latencies for ldm and ldrd are the same. Using ldm avoids needless #ifdefs.
|
|
||||||
*/
|
|
||||||
/* At least 24 bytes remaining... */
|
|
||||||
ldmia r0!, {r4, r5}
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
|
|
||||||
/* At least 16 bytes remaining... */
|
|
||||||
ldmia r0!, {r4, r5}
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
|
|
||||||
/* At least 8 bytes remaining... */
|
|
||||||
ldmia r0!, {r4, r5}
|
|
||||||
adcs r2, r2, r4
|
|
||||||
adcs r2, r2, r5
|
|
||||||
|
|
||||||
/* Less than 8 bytes remaining... */
|
|
||||||
adc r2, r2, #0x00
|
|
||||||
subs r1, r1, #0x04
|
|
||||||
blt .Lcksumdata_lessthan4
|
|
||||||
|
|
||||||
ldr r4, [r0], #0x04
|
|
||||||
sub r1, r1, #0x04
|
|
||||||
adds r2, r2, r4
|
|
||||||
adc r2, r2, #0x00
|
|
||||||
|
|
||||||
/* Deal with < 4 bytes remaining */
|
|
||||||
.Lcksumdata_lessthan4:
|
|
||||||
adds r1, r1, #0x04
|
|
||||||
RETeq
|
|
||||||
|
|
||||||
/* Deal with 1 to 3 remaining bytes, possibly misaligned */
|
|
||||||
.Lcksumdata_endgame:
|
|
||||||
ldrb r3, [r0] /* Fetch first byte */
|
|
||||||
cmp r1, #0x02
|
|
||||||
ldrgeb r4, [r0, #0x01] /* Fetch 2nd and 3rd as necessary */
|
|
||||||
movlt r4, #0x00
|
|
||||||
ldrgtb r5, [r0, #0x02]
|
|
||||||
movle r5, #0x00
|
|
||||||
/* Combine the three bytes depending on endianness and alignment */
|
|
||||||
tst r0, #0x01
|
|
||||||
#ifdef __ARMEB__
|
|
||||||
orreq r3, r4, r3, lsl #8
|
|
||||||
orreq r3, r3, r5, lsl #24
|
|
||||||
orrne r3, r3, r4, lsl #8
|
|
||||||
orrne r3, r3, r5, lsl #16
|
|
||||||
#else
|
|
||||||
orreq r3, r3, r4, lsl #8
|
|
||||||
orreq r3, r3, r5, lsl #16
|
|
||||||
orrne r3, r4, r3, lsl #8
|
|
||||||
orrne r3, r3, r5, lsl #24
|
|
||||||
#endif
|
|
||||||
adds r2, r2, r3
|
|
||||||
adc r2, r2, #0x00
|
|
||||||
RET
|
|
||||||
Loading…
x
Reference in New Issue
Block a user