lib1funcs.asm

linux下的gcc编译器

/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002
   Free Software Foundation, Inc.

This file is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.

In addition to the permissions in the GNU General Public License, the
Free Software Foundation gives you unlimited permission to link the
compiled version of this file into combinations with other programs,
and to distribute those combinations without any restriction coming
from the use of this file.  (The General Public License restrictions
do apply in other respects; for example, they cover modification of
the file, and distribution when not linked into a combine
executable.)

This file is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

!! libgcc routines for the Hitachi / SuperH SH CPUs.
!! Contributed by Steve Chamberlain.
!! [e-mail]

!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines
!! recoded in assembly by Toshiyasu Morita
!! [e-mail]

/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
   ELF local label prefixes by J"orn Rennecke
   [e-mail]  */

#ifdef __ELF__
#define LOCAL(X) .L_##X
#else
#define LOCAL(X) L_##X
#endif

#define	CONCAT(A,B)	A##B
#define	GLOBAL0(U,X)	CONCAT(U,__##X)
#define	GLOBAL(X)	GLOBAL0(__USER_LABEL_PREFIX__,X)

#if defined __SH5__ && ! defined __SH4_NOFPU__ && ! defined (__LITTLE_ENDIAN__)
#define FMOVD_WORKS
#endif

#if ! __SH5__
#ifdef L_ashiftrt
	.global	GLOBAL(ashiftrt_r4_0)
	.global	GLOBAL(ashiftrt_r4_1)
	.global	GLOBAL(ashiftrt_r4_2)
	.global	GLOBAL(ashiftrt_r4_3)
	.global	GLOBAL(ashiftrt_r4_4)
	.global	GLOBAL(ashiftrt_r4_5)
	.global	GLOBAL(ashiftrt_r4_6)
	.global	GLOBAL(ashiftrt_r4_7)
	.global	GLOBAL(ashiftrt_r4_8)
	.global	GLOBAL(ashiftrt_r4_9)
	.global	GLOBAL(ashiftrt_r4_10)
	.global	GLOBAL(ashiftrt_r4_11)
	.global	GLOBAL(ashiftrt_r4_12)
	.global	GLOBAL(ashiftrt_r4_13)
	.global	GLOBAL(ashiftrt_r4_14)
	.global	GLOBAL(ashiftrt_r4_15)
	.global	GLOBAL(ashiftrt_r4_16)
	.global	GLOBAL(ashiftrt_r4_17)
	.global	GLOBAL(ashiftrt_r4_18)
	.global	GLOBAL(ashiftrt_r4_19)
	.global	GLOBAL(ashiftrt_r4_20)
	.global	GLOBAL(ashiftrt_r4_21)
	.global	GLOBAL(ashiftrt_r4_22)
	.global	GLOBAL(ashiftrt_r4_23)
	.global	GLOBAL(ashiftrt_r4_24)
	.global	GLOBAL(ashiftrt_r4_25)
	.global	GLOBAL(ashiftrt_r4_26)
	.global	GLOBAL(ashiftrt_r4_27)
	.global	GLOBAL(ashiftrt_r4_28)
	.global	GLOBAL(ashiftrt_r4_29)
	.global	GLOBAL(ashiftrt_r4_30)
	.global	GLOBAL(ashiftrt_r4_31)
	.global	GLOBAL(ashiftrt_r4_32)

	.align	1
GLOBAL(ashiftrt_r4_32):
GLOBAL(ashiftrt_r4_31):
	rotcl	r4
	rts
	subc	r4,r4

GLOBAL(ashiftrt_r4_30):
	shar	r4
GLOBAL(ashiftrt_r4_29):
	shar	r4
GLOBAL(ashiftrt_r4_28):
	shar	r4
GLOBAL(ashiftrt_r4_27):
	shar	r4
GLOBAL(ashiftrt_r4_26):
	shar	r4
GLOBAL(ashiftrt_r4_25):
	shar	r4
GLOBAL(ashiftrt_r4_24):
	shlr16	r4
	shlr8	r4
	rts
	exts.b	r4,r4

GLOBAL(ashiftrt_r4_23):
	shar	r4
GLOBAL(ashiftrt_r4_22):
	shar	r4
GLOBAL(ashiftrt_r4_21):
	shar	r4
GLOBAL(ashiftrt_r4_20):
	shar	r4
GLOBAL(ashiftrt_r4_19):
	shar	r4
GLOBAL(ashiftrt_r4_18):
	shar	r4
GLOBAL(ashiftrt_r4_17):
	shar	r4
GLOBAL(ashiftrt_r4_16):
	shlr16	r4
	rts
	exts.w	r4,r4

GLOBAL(ashiftrt_r4_15):
	shar	r4
GLOBAL(ashiftrt_r4_14):
	shar	r4
GLOBAL(ashiftrt_r4_13):
	shar	r4
GLOBAL(ashiftrt_r4_12):
	shar	r4
GLOBAL(ashiftrt_r4_11):
	shar	r4
GLOBAL(ashiftrt_r4_10):
	shar	r4
GLOBAL(ashiftrt_r4_9):
	shar	r4
GLOBAL(ashiftrt_r4_8):
	shar	r4
GLOBAL(ashiftrt_r4_7):
	shar	r4
GLOBAL(ashiftrt_r4_6):
	shar	r4
GLOBAL(ashiftrt_r4_5):
	shar	r4
GLOBAL(ashiftrt_r4_4):
	shar	r4
GLOBAL(ashiftrt_r4_3):
	shar	r4
GLOBAL(ashiftrt_r4_2):
	shar	r4
GLOBAL(ashiftrt_r4_1):
	rts
	shar	r4

GLOBAL(ashiftrt_r4_0):
	rts
	nop
#endif

#ifdef L_ashiftrt_n

!
! GLOBAL(ashrsi3)
!
! Entry:
!
! r4: Value to shift
! r5: Shifts
!
! Exit:
!
! r0: Result
!
! Destroys:
!
! (none)
!

	.global	GLOBAL(ashrsi3)
	.align	2
GLOBAL(ashrsi3):
	mov	#31,r0
	and	r0,r5
	mova	LOCAL(ashrsi3_table),r0
	mov.b	@(r0,r5),r5
#ifdef __sh1__
	add	r5,r0
	jmp	@r0
#else
	braf	r5
#endif
	mov	r4,r0

	.align	2
LOCAL(ashrsi3_table):
	.byte		LOCAL(ashrsi3_0)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_1)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_2)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_3)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_4)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_5)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_6)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_7)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_8)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_9)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_10)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_11)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_12)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_13)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_14)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_15)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_16)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_17)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_18)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_19)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_20)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_21)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_22)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_23)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_24)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_25)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_26)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_27)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_28)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_29)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_30)-LOCAL(ashrsi3_table)
	.byte		LOCAL(ashrsi3_31)-LOCAL(ashrsi3_table)

LOCAL(ashrsi3_31):
	rotcl	r0
	rts
	subc	r0,r0

LOCAL(ashrsi3_30):
	shar	r0
LOCAL(ashrsi3_29):
	shar	r0
LOCAL(ashrsi3_28):
	shar	r0
LOCAL(ashrsi3_27):
	shar	r0
LOCAL(ashrsi3_26):
	shar	r0
LOCAL(ashrsi3_25):
	shar	r0
LOCAL(ashrsi3_24):
	shlr16	r0
	shlr8	r0
	rts
	exts.b	r0,r0

LOCAL(ashrsi3_23):
	shar	r0
LOCAL(ashrsi3_22):
	shar	r0
LOCAL(ashrsi3_21):
	shar	r0
LOCAL(ashrsi3_20):
	shar	r0
LOCAL(ashrsi3_19):
	shar	r0
LOCAL(ashrsi3_18):
	shar	r0
LOCAL(ashrsi3_17):
	shar	r0
LOCAL(ashrsi3_16):
	shlr16	r0
	rts
	exts.w	r0,r0

LOCAL(ashrsi3_15):
	shar	r0
LOCAL(ashrsi3_14):
	shar	r0
LOCAL(ashrsi3_13):
	shar	r0
LOCAL(ashrsi3_12):
	shar	r0
LOCAL(ashrsi3_11):
	shar	r0
LOCAL(ashrsi3_10):
	shar	r0
LOCAL(ashrsi3_9):
	shar	r0
LOCAL(ashrsi3_8):
	shar	r0
LOCAL(ashrsi3_7):
	shar	r0
LOCAL(ashrsi3_6):
	shar	r0
LOCAL(ashrsi3_5):
	shar	r0
LOCAL(ashrsi3_4):
	shar	r0
LOCAL(ashrsi3_3):
	shar	r0
LOCAL(ashrsi3_2):
	shar	r0
LOCAL(ashrsi3_1):
	rts
	shar	r0

LOCAL(ashrsi3_0):
	rts
	nop

#endif

#ifdef L_ashiftlt

!
! GLOBAL(ashlsi3)
!
! Entry:
!
! r4: Value to shift
! r5: Shifts
!
! Exit:
!
! r0: Result
!
! Destroys:
!
! (none)
!
	.global	GLOBAL(ashlsi3)
	.align	2
GLOBAL(ashlsi3):
	mov	#31,r0
	and	r0,r5
	mova	LOCAL(ashlsi3_table),r0
	mov.b	@(r0,r5),r5
#ifdef __sh1__
	add	r5,r0
	jmp	@r0
#else
	braf	r5
#endif
	mov	r4,r0

	.align	2
LOCAL(ashlsi3_table):
	.byte		LOCAL(ashlsi3_0)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_1)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_2)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_3)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_4)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_5)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_6)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_7)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_8)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_9)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_10)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_11)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_12)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_13)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_14)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_15)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_16)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_17)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_18)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_19)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_20)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_21)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_22)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_23)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_24)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_25)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_26)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_27)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_28)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_29)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_30)-LOCAL(ashlsi3_table)
	.byte		LOCAL(ashlsi3_31)-LOCAL(ashlsi3_table)

LOCAL(ashlsi3_6):
	shll2	r0
LOCAL(ashlsi3_4):
	shll2	r0
LOCAL(ashlsi3_2):
	rts
	shll2	r0

LOCAL(ashlsi3_7):
	shll2	r0
LOCAL(ashlsi3_5):
	shll2	r0
LOCAL(ashlsi3_3):
	shll2	r0
LOCAL(ashlsi3_1):
	rts
	shll	r0

LOCAL(ashlsi3_14):
	shll2	r0
LOCAL(ashlsi3_12):
	shll2	r0
LOCAL(ashlsi3_10):
	shll2	r0
LOCAL(ashlsi3_8):
	rts
	shll8	r0

LOCAL(ashlsi3_15):
	shll2	r0
LOCAL(ashlsi3_13):
	shll2	r0
LOCAL(ashlsi3_11):
	shll2	r0
LOCAL(ashlsi3_9):
	shll8	r0
	rts
	shll	r0

LOCAL(ashlsi3_22):
	shll2	r0
LOCAL(ashlsi3_20):
	shll2	r0
LOCAL(ashlsi3_18):
	shll2	r0
LOCAL(ashlsi3_16):
	rts
	shll16	r0

LOCAL(ashlsi3_23):
	shll2	r0
LOCAL(ashlsi3_21):
	shll2	r0
LOCAL(ashlsi3_19):
	shll2	r0
LOCAL(ashlsi3_17):
	shll16	r0
	rts
	shll	r0

LOCAL(ashlsi3_30):
	shll2	r0
LOCAL(ashlsi3_28):
	shll2	r0
LOCAL(ashlsi3_26):
	shll2	r0
LOCAL(ashlsi3_24):
	shll16	r0
	rts
	shll8	r0

LOCAL(ashlsi3_31):
	shll2	r0
LOCAL(ashlsi3_29):
	shll2	r0
LOCAL(ashlsi3_27):
	shll2	r0
LOCAL(ashlsi3_25):
	shll16	r0
	shll8	r0
	rts
	shll	r0

LOCAL(ashlsi3_0):
	rts
	nop

#endif

#ifdef L_lshiftrt

!
! GLOBAL(lshrsi3)
!
! Entry:
!
! r4: Value to shift
! r5: Shifts
!
! Exit:
!
! r0: Result
!
! Destroys:
!
! (none)
!
	.global	GLOBAL(lshrsi3)
	.align	2
GLOBAL(lshrsi3):
	mov	#31,r0
	and	r0,r5
	mova	LOCAL(lshrsi3_table),r0
	mov.b	@(r0,r5),r5
#ifdef __sh1__
	add	r5,r0
	jmp	@r0
#else
	braf	r5
#endif
	mov	r4,r0

	.align	2
LOCAL(lshrsi3_table):
	.byte		LOCAL(lshrsi3_0)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_1)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_2)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_3)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_4)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_5)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_6)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_7)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_8)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_9)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_10)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_11)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_12)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_13)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_14)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_15)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_16)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_17)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_18)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_19)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_20)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_21)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_22)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_23)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_24)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_25)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_26)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_27)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_28)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_29)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_30)-LOCAL(lshrsi3_table)
	.byte		LOCAL(lshrsi3_31)-LOCAL(lshrsi3_table)

LOCAL(lshrsi3_6):
	shlr2	r0
LOCAL(lshrsi3_4):
	shlr2	r0
LOCAL(lshrsi3_2):
	rts
	shlr2	r0

LOCAL(lshrsi3_7):
	shlr2	r0
LOCAL(lshrsi3_5):
	shlr2	r0
LOCAL(lshrsi3_3):
	shlr2	r0
LOCAL(lshrsi3_1):
	rts
	shlr	r0

LOCAL(lshrsi3_14):
	shlr2	r0
LOCAL(lshrsi3_12):
	shlr2	r0
LOCAL(lshrsi3_10):
	shlr2	r0
LOCAL(lshrsi3_8):
	rts
	shlr8	r0

LOCAL(lshrsi3_15):
	shlr2	r0
LOCAL(lshrsi3_13):
	shlr2	r0
LOCAL(lshrsi3_11):
	shlr2	r0
LOCAL(lshrsi3_9):
	shlr8	r0
	rts
	shlr	r0

LOCAL(lshrsi3_22):
	shlr2	r0
LOCAL(lshrsi3_20):
	shlr2	r0
LOCAL(lshrsi3_18):
	shlr2	r0
LOCAL(lshrsi3_16):
	rts
	shlr16	r0

LOCAL(lshrsi3_23):
	shlr2	r0
LOCAL(lshrsi3_21):
	shlr2	r0
LOCAL(lshrsi3_19):
	shlr2	r0
LOCAL(lshrsi3_17):
	shlr16	r0
	rts
	shlr	r0

LOCAL(lshrsi3_30):
	shlr2	r0
LOCAL(lshrsi3_28):
	shlr2	r0
LOCAL(lshrsi3_26):
	shlr2	r0
LOCAL(lshrsi3_24):
	shlr16	r0
	rts
	shlr8	r0

LOCAL(lshrsi3_31):
	shlr2	r0
LOCAL(lshrsi3_29):
	shlr2	r0
LOCAL(lshrsi3_27):
	shlr2	r0
LOCAL(lshrsi3_25):
	shlr16	r0
	shlr8	r0
	rts
	shlr	r0

LOCAL(lshrsi3_0):
	rts
	nop

#endif

#ifdef L_movstr
	.text
! done all the large groups, do the remainder

! jump to movstr+
done:
	add	#64,r5
	mova	GLOBAL(movstrSI0),r0
	shll2	r6
	add	r6,r0
	jmp	@r0
	add	#64,r4
	.align	4
	.global	GLOBAL(movstrSI64)
GLOBAL(movstrSI64):
	mov.l	@(60,r5),r0
	mov.l	r0,@(60,r4)
	.global	GLOBAL(movstrSI60)
GLOBAL(movstrSI60):
	mov.l	@(56,r5),r0
	mov.l	r0,@(56,r4)
	.global	GLOBAL(movstrSI56)
GLOBAL(movstrSI56):
	mov.l	@(52,r5),r0
	mov.l	r0,@(52,r4)
	.global	GLOBAL(movstrSI52)
GLOBAL(movstrSI52):
	mov.l	@(48,r5),r0
	mov.l	r0,@(48,r4)
	.global	GLOBAL(movstrSI48)
GLOBAL(movstrSI48):
	mov.l	@(44,r5),r0
	mov.l	r0,@(44,r4)
	.global	GLOBAL(movstrSI44)
GLOBAL(movstrSI44):