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/* Miscellaneous BPABI functions. ARMv6M implementation
Copyright (C) 2006, 2008 Free Software Foundation, Inc.
Contributed by CodeSourcery.
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, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#ifdef L_aeabi_lcmp
FUNC_START aeabi_lcmp
cmp xxh, yyh
beq 1f
bgt 2f
mov r0, #1
neg r0, r0
RET
2:
mov r0, #1
RET
1:
sub r0, xxl, yyl
beq 1f
bhi 2f
mov r0, #1
neg r0, r0
RET
2:
mov r0, #1
1:
RET
FUNC_END aeabi_lcmp
#endif /* L_aeabi_lcmp */
#ifdef L_aeabi_ulcmp
FUNC_START aeabi_ulcmp
cmp xxh, yyh
bne 1f
sub r0, xxl, yyl
beq 2f
1:
bcs 1f
mov r0, #1
neg r0, r0
RET
1:
mov r0, #1
2:
RET
FUNC_END aeabi_ulcmp
#endif /* L_aeabi_ulcmp */
#ifdef L_aeabi_ldivmod
FUNC_START aeabi_ldivmod
push {r0, r1}
mov r0, sp
push {r0, lr}
ldr r0, [sp, #8]
bl SYM(__gnu_ldivmod_helper)
ldr r3, [sp, #4]
mov lr, r3
add sp, sp, #8
pop {r2, r3}
RET
FUNC_END aeabi_ldivmod
#endif /* L_aeabi_ldivmod */
#ifdef L_aeabi_uldivmod
FUNC_START aeabi_uldivmod
push {r0, r1}
mov r0, sp
push {r0, lr}
ldr r0, [sp, #8]
bl SYM(__gnu_uldivmod_helper)
ldr r3, [sp, #4]
mov lr, r3
add sp, sp, #8
pop {r2, r3}
RET
FUNC_END aeabi_uldivmod
#endif /* L_aeabi_uldivmod */
#ifdef L_arm_addsubsf3
FUNC_START aeabi_frsub
push {r4, lr}
mov r4, #1
lsl r4, #31
eor r0, r0, r4
bl __aeabi_fadd
pop {r4, pc}
FUNC_END aeabi_frsub
#endif /* L_arm_addsubsf3 */
#ifdef L_arm_cmpsf2
FUNC_START aeabi_cfrcmple
mov ip, r0
mov r0, r1
mov r1, ip
b 6f
FUNC_START aeabi_cfcmpeq
FUNC_ALIAS aeabi_cfcmple aeabi_cfcmpeq
@ The status-returning routines are required to preserve all
@ registers except ip, lr, and cpsr.
6: push {r0, r1, r2, r3, r4, lr}
bl __lesf2
@ Set the Z flag correctly, and the C flag unconditionally.
cmp r0, #0
@ Clear the C flag if the return value was -1, indicating
@ that the first operand was smaller than the second.
bmi 1f
mov r1, #0
cmn r0, r1
1:
pop {r0, r1, r2, r3, r4, pc}
FUNC_END aeabi_cfcmple
FUNC_END aeabi_cfcmpeq
FUNC_END aeabi_cfrcmple
FUNC_START aeabi_fcmpeq
push {r4, lr}
bl __eqsf2
neg r0, r0
add r0, r0, #1
pop {r4, pc}
FUNC_END aeabi_fcmpeq
.macro COMPARISON cond, helper, mode=sf2
FUNC_START aeabi_fcmp\cond
push {r4, lr}
bl __\helper\mode
cmp r0, #0
b\cond 1f
mov r0, #0
pop {r4, pc}
1:
mov r0, #1
pop {r4, pc}
FUNC_END aeabi_fcmp\cond
.endm
COMPARISON lt, le
COMPARISON le, le
COMPARISON gt, ge
COMPARISON ge, ge
#endif /* L_arm_cmpsf2 */
#ifdef L_arm_addsubdf3
FUNC_START aeabi_drsub
push {r4, lr}
mov r4, #1
lsl r4, #31
eor xxh, xxh, r4
bl __aeabi_dadd
pop {r4, pc}
FUNC_END aeabi_drsub
#endif /* L_arm_addsubdf3 */
#ifdef L_arm_cmpdf2
FUNC_START aeabi_cdrcmple
mov ip, r0
mov r0, r2
mov r2, ip
mov ip, r1
mov r1, r3
mov r3, ip
b 6f
FUNC_START aeabi_cdcmpeq
FUNC_ALIAS aeabi_cdcmple aeabi_cdcmpeq
@ The status-returning routines are required to preserve all
@ registers except ip, lr, and cpsr.
6: push {r0, r1, r2, r3, r4, lr}
bl __ledf2
@ Set the Z flag correctly, and the C flag unconditionally.
cmp r0, #0
@ Clear the C flag if the return value was -1, indicating
@ that the first operand was smaller than the second.
bmi 1f
mov r1, #0
cmn r0, r1
1:
pop {r0, r1, r2, r3, r4, pc}
FUNC_END aeabi_cdcmple
FUNC_END aeabi_cdcmpeq
FUNC_END aeabi_cdrcmple
FUNC_START aeabi_dcmpeq
push {r4, lr}
bl __eqdf2
neg r0, r0
add r0, r0, #1
pop {r4, pc}
FUNC_END aeabi_dcmpeq
.macro COMPARISON cond, helper, mode=df2
FUNC_START aeabi_dcmp\cond
push {r4, lr}
bl __\helper\mode
cmp r0, #0
b\cond 1f
mov r0, #0
pop {r4, pc}
1:
mov r0, #1
pop {r4, pc}
FUNC_END aeabi_dcmp\cond
.endm
COMPARISON lt, le
COMPARISON le, le
COMPARISON gt, ge
COMPARISON ge, ge
#endif /* L_arm_cmpdf2 */
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