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gcc/libgcc/config/arc/lib1funcs.S
Richard Sandiford ac1dca3cab Update copyright years in libgcc/ 
From-SVN: r206295
2014-01-02 22:25:22 +00:00

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; libgcc1 routines for Synopsys DesignWare ARC cpu.
/* Copyright (C) 1995-2014 Free Software Foundation, Inc.
Contributor: Joern Rennecke <joern.rennecke@embecosm.com>
on behalf of Synopsys Inc.
This file is part of GCC.
GCC 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 3, or (at your option) any later
version.
GCC 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.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
/* As a special exception, if you link this library with other files,
some of which are compiled with GCC, to produce an executable,
this library does not by itself cause the resulting executable
to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
/* ANSI concatenation macros. */
#define CONCAT1(a, b) CONCAT2(a, b)
#define CONCAT2(a, b) a ## b
/* Use the right prefix for global labels. */
#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
#ifndef WORKING_ASSEMBLER
#define abs_l abs
#define asl_l asl
#define mov_l mov
#endif
#define FUNC(X) .type SYM(X),@function
#define HIDDEN_FUNC(X) FUNC(X)` .hidden X
#define ENDFUNC0(X) .Lfe_##X: .size X,.Lfe_##X-X
#define ENDFUNC(X) ENDFUNC0(X)
#ifdef L_mulsi3
.section .text
.align 4
.global SYM(__mulsi3)
SYM(__mulsi3):
/* This the simple version.
while (a)
{
if (a & 1)
r += b;
a >>= 1;
b <<= 1;
}
*/
#if defined (__ARC_MUL64__)
FUNC(__mulsi3)
mulu64 r0,r1
j_s.d [blink]
mov_s r0,mlo
ENDFUNC(__mulsi3)
#elif defined (__ARC700__)
HIDDEN_FUNC(__mulsi3)
mpyu r0,r0,r1
nop_s
j_s [blink]
ENDFUNC(__mulsi3)
#elif defined (__ARC_NORM__)
FUNC(__mulsi3)
norm.f r2,r0
rsub lp_count,r2,31
mov.mi lp_count,32
mov_s r2,r0
mov_s r0,0
lpnz @.Lend ; loop is aligned
lsr.f r2,r2
add.cs r0,r0,r1
add_s r1,r1,r1
.Lend: j_s [blink]
ENDFUNC(__mulsi3)
#elif !defined (__OPTIMIZE_SIZE__) && !defined(__ARC601__)
/* Up to 3.5 times faster than the simpler code below, but larger. */
FUNC(__mulsi3)
ror.f r2,r0,4
mov_s r0,0
add3.mi r0,r0,r1
asl.f r2,r2,2
add2.cs r0,r0,r1
jeq_s [blink]
.Loop:
add1.mi r0,r0,r1
asl.f r2,r2,2
add.cs r0,r0,r1
asl_s r1,r1,4
ror.f r2,r2,8
add3.mi r0,r0,r1
asl.f r2,r2,2
bne.d .Loop
add2.cs r0,r0,r1
j_s [blink]
ENDFUNC(__mulsi3)
#elif !defined (__OPTIMIZE_SIZE__) /* __ARC601__ */
FUNC(__mulsi3)
lsr.f r2,r0
mov_s r0,0
mov_s r3,0
add.cs r0,r0,r1
.Loop:
lsr.f r2,r2
add1.cs r0,r0,r1
lsr.f r2,r2
add2.cs r0,r0,r1
lsr.f r2,r2
add3.cs r0,r0,r1
bne.d .Loop
add3 r1,r3,r1
j_s [blink]
ENDFUNC(__mulsi3)
#else
/********************************************************/
FUNC(__mulsi3)
mov_s r2,0 ; Accumulate result here.
.Lloop:
bbit0 r0,0,@.Ly
add_s r2,r2,r1 ; r += b
.Ly:
lsr_s r0,r0 ; a >>= 1
asl_s r1,r1 ; b <<= 1
brne_s r0,0,@.Lloop
.Ldone:
j_s.d [blink]
mov_s r0,r2
ENDFUNC(__mulsi3)
/********************************************************/
#endif
#endif /* L_mulsi3 */
#ifdef L_umulsidi3
.section .text
.align 4
.global SYM(__umulsidi3)
SYM(__umulsidi3):
HIDDEN_FUNC(__umulsidi3)
/* We need ARC700 /ARC_MUL64 definitions of __umulsidi3 / __umulsi3_highpart
in case some code has been compiled without multiply support enabled,
but linked with the multiply-support enabled libraries.
For ARC601 (i.e. without a barrel shifter), we also use umuldisi3 as our
umulsi3_highpart implementation; the use of the latter label doesn't
actually benefit ARC601 platforms, but is useful when ARC601 code is linked
against other libraries. */
#if defined (__ARC700__) || defined (__ARC_MUL64__) || defined (__ARC601__)
.global SYM(__umulsi3_highpart)
SYM(__umulsi3_highpart):
HIDDEN_FUNC(__umulsi3_highpart)
#endif
/* This the simple version.
while (a)
{
if (a & 1)
r += b;
a >>= 1;
b <<= 1;
}
*/
#include "ieee-754/arc-ieee-754.h"
#ifdef __ARC700__
mov_s r12,DBL0L
mpyu DBL0L,r12,DBL0H
j_s.d [blink]
mpyhu DBL0H,r12,DBL0H
#elif defined (__ARC_MUL64__)
/* Likewise for __ARC_MUL64__ */
mulu64 r0,r1
mov_s DBL0L,mlo
j_s.d [blink]
mov_s DBL0H,mhi
#else /* !__ARC700__ && !__ARC_MUL64__ */
/* Although it might look tempting to extend this to handle muldi3,
using mulsi3 twice with 2.25 cycles per 32 bit add is faster
than one loop with 3 or four cycles per 32 bit add. */
asl.f r12,0 ; Top part of b.
mov_s r2,0 ; Accumulate result here.
bbit1.d r0,0,@.Ladd
mov_s r3,0
.Llooptst:
rlc r12,r12
breq r0,0,@.Ldone ; while (a)
.Lloop:
asl.f r1,r1 ; b <<= 1
bbit0.d r0,1,@.Llooptst
lsr r0,r0 ; a >>= 1
rlc r12,r12
.Ladd:
add.f r3,r3,r1 ; r += b
brne.d r0,0,@.Lloop ; while (a);
adc r2,r2,r12
.Ldone:
mov_s DBL0L,r3
j_s.d [blink]
mov DBL0H,r2
#endif /* !__ARC700__*/
ENDFUNC(__umulsidi3)
#if defined (__ARC700__) || defined (__ARC_MUL64__) || defined (__ARC601__)
ENDFUNC(__umulsi3_highpart)
#endif
#endif /* L_umulsidi3 */
#ifdef L_umulsi3_highpart
#include "ieee-754/arc-ieee-754.h"
/* For use without a barrel shifter, and for ARC700 / ARC_MUL64, the
mulsidi3 algorithms above look better, so for these, there is an
extra label up there. */
#if !defined (__ARC700__) && !defined (__ARC_MUL64__) && !defined (__ARC601__)
.global SYM(__umulsi3_highpart)
SYM(__umulsi3_highpart):
HIDDEN_FUNC(__umulsi3_highpart)
mov_s r2,0
mov_s r3,32
.Loop:
lsr.f r0,r0
add.cs.f r2,r2,r1
sub_s r3,r3,1
brne.d r0,0,.Loop
rrc r2,r2
j_s.d [blink]
/* Make the result register peephole-compatible with mulsidi3. */
lsr DBL0H,r2,r3
ENDFUNC(__umulsi3_highpart)
#endif /* !__ARC700__ && !__ARC601__ */
#endif /* L_umulsi3_highpart */
#ifdef L_divmod_tools
; Utilities used by all routines.
.section .text
/*
unsigned long
udivmodsi4(int modwanted, unsigned long num, unsigned long den)
{
unsigned long bit = 1;
unsigned long res = 0;
while (den < num && bit && !(den & (1L<<31)))
{
den <<=1;
bit <<=1;
}
while (bit)
{
if (num >= den)
{
num -= den;
res |= bit;
}
bit >>=1;
den >>=1;
}
if (modwanted) return num;
return res;
}
*/
; inputs: r0 = numerator, r1 = denominator
; outputs: r0 = quotient, r1 = remainder, r2/r3 trashed
.balign 4
.global SYM(__udivmodsi4)
FUNC(__udivmodsi4)
SYM(__udivmodsi4):
#if defined (__ARC700__)
/* Normalize divisor and divident, and then use the appropriate number of
divaw (the number of result bits, or one more) to produce the result.
There are some special conditions that need to be tested:
- We can only directly normalize unsigned numbers that fit in 31 bit. For
the divisor, we test early on that it is not 'negative'.
- divaw can't corrrectly process a divident that is larger than the divisor.
We handle this be checking that the divident prior to normalization is
not larger than the normalized divisor. As we then already know then
that the divisor fits 31 bit, this check also makes sure that the
divident fits.
- ordinary normalization of the divident could make it larger than the
normalized divisor, which again would be unsuitable for divaw.
Thus, we want to shift left the divident by one less, except that we
want to leave it alone if it is already 31 bit. To this end, we
double the input to norm with adds.
- If the divident has less bits than the divisor, that would leave us
with a negative number of divaw to execute. Although we could use a
conditional loop to avoid excess divaw, and then the quotient could
be extracted correctly as there'd be more than enough zero bits, the
remainder would be shifted left too far, requiring a conditional shift
right. The cost of that shift and the possible mispredict on the
conditional loop cost as much as putting in an early check for a zero
result. */
bmsk r3,r0,29
brne.d r3,r0,.Large_dividend
norm.f r2,r1
brlo r0,r1,.Lret0
norm r3,r0
asl_s r1,r1,r2
sub_s r3,r3,1
asl_l r0,r0,r3 ; not short to keep loop aligned
sub lp_count,r2,r3
lp .Ldiv_end
divaw r0,r0,r1
.Ldiv_end:sub_s r3,r2,1
lsr r1,r0,r2
j_s.d [blink]
bmsk r0,r0,r3
.balign 4
.Large_dividend:
bmi .Ltrivial
asl_s r1,r1,r2
mov_s r3,0
sub1.f r4,r0,r1
mov.lo r4,r0
mov.hs r3,2
cmp r4,r1
sub.hs r4,r4,r1
add.hs r3,r3,1
mov.f lp_count,r2
lpne .Ldiv_end2
divaw r4,r4,r1
.Ldiv_end2:asl r0,r3,r2
lsr r1,r4,r2
sub_s r2,r2,1
bmsk r4,r4,r2
j_s.d [blink]
or.ne r0,r0,r4
.Lret0:
mov_s r1,r0
j_s.d [blink]
mov_l r0,0
.balign 4
.Ltrivial:
sub.f r1,r0,r1
mov.c r1,r0
mov_s r0,1
j_s.d [blink]
mov.c r0,0
#elif !defined (__OPTIMIZE_SIZE__)
#ifdef __ARC_NORM__
lsr_s r2,r0
brhs.d r1,r2,.Lret0_3
norm r2,r2
norm r3,r1
sub_s r3,r3,r2
asl_s r1,r1,r3
sub1.f 0,r0,r1
lsr.cs r1,r1,1
sbc r2,r3,0
sub1 r0,r0,r1
cmp_s r0,r1
mov.f lp_count,r2
#else /* ! __ARC_NORM__ */
lsr_s r2,r0
brhs.d r1,r2,.Lret0_3
mov lp_count,32
.Lloop1:
asl_s r1,r1 ; den <<= 1
brls.d r1,r2,@.Lloop1
sub lp_count,lp_count,1
sub_s r0,r0,r1
lsr_s r1,r1
cmp_s r0,r1
xor.f r2,lp_count,31
mov_s lp_count,r2
#endif /* !__ARC_NORM__ */
sub.cc r0,r0,r1
mov_s r3,3
sbc r3,r3,0
#ifndef __ARC601__
asl_s r3,r3,r2
rsub r1,r1,1
lpne @.Lloop2_end
add1.f r0,r1,r0
sub.cc r0,r0,r1
.Lloop2_end:
lsr r1,r0,r2
#else
rsub r1,r1,1
lpne @.Lloop2_end
asl_s r3,r3
add1.f r0,r1,r0
sub.cc r0,r0,r1
.Lloop2_end:
lsr_s r1,r0
lsr.f lp_count,r2
mov.cc r1,r0
lpnz 1f
lsr_s r1,r1
lsr_s r1,r1
1:
#endif
bmsk r0,r0,r2
bclr r0,r0,r2
j_s.d [blink]
or_s r0,r0,r3
.Lret0_3:
#if 0 /* Slightly shorter, but slower. */
lp .Loop3_end
brhi.d r1,r0,.Loop3_end
sub_s r0,r0,r1
.Loop3_end
add_s r1,r1,r0
j_s.d [blink]
rsub r0,lp_count,32-1
#else
mov_s r4,r1
sub.f r1,r0,r1
sbc r0,r0,r0
sub.cc.f r1,r1,r4
sbc r0,r0,0
sub.cc.f r1,r1,r4
sbc r0,r0,-3
j_s.d [blink]
add.cs r1,r1,r4
#endif
#else /* Arctangent-A5 */
breq_s r1,0,@.Ldivmodend
mov_s r2,1 ; bit = 1
mov_s r3,0 ; res = 0
.Lloop1:
brhs r1,r0,@.Lloop2
bbit1 r1,31,@.Lloop2
asl_s r1,r1 ; den <<= 1
b.d @.Lloop1
asl_s r2,r2 ; bit <<= 1
.Lloop2:
brlo r0,r1,@.Lshiftdown
sub_s r0,r0,r1 ; num -= den
or_s r3,r3,r2 ; res |= bit
.Lshiftdown:
lsr_s r2,r2 ; bit >>= 1
lsr_s r1,r1 ; den >>= 1
brne_s r2,0,@.Lloop2
.Ldivmodend:
mov_s r1,r0 ; r1 = mod
j.d [blink]
mov_s r0,r3 ; r0 = res
/******************************************************/
#endif
ENDFUNC(__udivmodsi4)
#endif
#ifdef L_udivsi3
.section .text
.align 4
.global SYM(__udivsi3)
FUNC(__udivsi3)
SYM(__udivsi3):
b @SYM(__udivmodsi4)
ENDFUNC(__udivsi3)
#if 0 /* interferes with linux loader */
.section .__arc_profile_forward, "a"
.long SYM(__udivsi3)
.long SYM(__udivmodsi4)
.long 65536
#endif
#endif /* L_udivsi3 */
#ifdef L_divsi3
.section .text
.align 4
.global SYM(__divsi3)
FUNC(__divsi3)
#ifndef __ARC700__
SYM(__divsi3):
/* A5 / ARC60? */
mov r7,blink
xor r6,r0,r1
abs_s r0,r0
bl.d @SYM(__udivmodsi4)
abs_s r1,r1
tst r6,r6
j.d [r7]
neg.mi r0,r0
#else /* !ifndef __ARC700__ */
;; We can use the abs, norm, divaw and mpy instructions for ARC700
#define MULDIV
#ifdef MULDIV
/* This table has been generated by divtab-arc700.c. */
/* 1/512 .. 1/256, normalized. There is a leading 1 in bit 31.
For powers of two, we list unnormalized numbers instead. The values
for powers of 2 are loaded, but not used. The value for 1 is actually
the first instruction after .Lmuldiv. */
.balign 4
.Ldivtab:
.long 0x1000000
.long 0x80808081
.long 0x81020409
.long 0x81848DA9
.long 0x82082083
.long 0x828CBFBF
.long 0x83126E98
.long 0x83993053
.long 0x84210843
.long 0x84A9F9C9
.long 0x85340854
.long 0x85BF3762
.long 0x864B8A7E
.long 0x86D90545
.long 0x8767AB60
.long 0x87F78088
.long 0x88888889
.long 0x891AC73B
.long 0x89AE408A
.long 0x8A42F871
.long 0x8AD8F2FC
.long 0x8B70344B
.long 0x8C08C08D
.long 0x8CA29C05
.long 0x8D3DCB09
.long 0x8DDA5203
.long 0x8E78356E
.long 0x8F1779DA
.long 0x8FB823EF
.long 0x905A3864
.long 0x90FDBC0A
.long 0x91A2B3C5
.long 0x92492493
.long 0x92F11385
.long 0x939A85C5
.long 0x94458095
.long 0x94F20950
.long 0x95A02569
.long 0x964FDA6D
.long 0x97012E03
.long 0x97B425EE
.long 0x9868C80A
.long 0x991F1A52
.long 0x99D722DB
.long 0x9A90E7DA
.long 0x9B4C6F9F
.long 0x9C09C09D
.long 0x9CC8E161
.long 0x9D89D89E
.long 0x9E4CAD24
.long 0x9F1165E8
.long 0x9FD809FE
.long 0xA0A0A0A1
.long 0xA16B312F
.long 0xA237C32C
.long 0xA3065E40
.long 0xA3D70A3E
.long 0xA4A9CF1E
.long 0xA57EB503
.long 0xA655C43A
.long 0xA72F053A
.long 0xA80A80A9
.long 0xA8E83F58
.long 0xA9C84A48
.long 0xAAAAAAAB
.long 0xAB8F69E3
.long 0xAC769185
.long 0xAD602B59
.long 0xAE4C415D
.long 0xAF3ADDC7
.long 0xB02C0B03
.long 0xB11FD3B9
.long 0xB21642C9
.long 0xB30F6353
.long 0xB40B40B5
.long 0xB509E68B
.long 0xB60B60B7
.long 0xB70FBB5B
.long 0xB81702E1
.long 0xB92143FB
.long 0xBA2E8BA3
.long 0xBB3EE722
.long 0xBC52640C
.long 0xBD691048
.long 0xBE82FA0C
.long 0xBFA02FE9
.long 0xC0C0C0C1
.long 0xC1E4BBD6
.long 0xC30C30C4
.long 0xC4372F86
.long 0xC565C87C
.long 0xC6980C6A
.long 0xC7CE0C7D
.long 0xC907DA4F
.long 0xCA4587E7
.long 0xCB8727C1
.long 0xCCCCCCCD
.long 0xCE168A78
.long 0xCF6474A9
.long 0xD0B69FCC
.long 0xD20D20D3
.long 0xD3680D37
.long 0xD4C77B04
.long 0xD62B80D7
.long 0xD79435E6
.long 0xD901B204
.long 0xDA740DA8
.long 0xDBEB61EF
.long 0xDD67C8A7
.long 0xDEE95C4D
.long 0xE070381D
.long 0xE1FC780F
.long 0xE38E38E4
.long 0xE525982B
.long 0xE6C2B449
.long 0xE865AC7C
.long 0xEA0EA0EB
.long 0xEBBDB2A6
.long 0xED7303B6
.long 0xEF2EB720
.long 0xF0F0F0F1
.long 0xF2B9D649
.long 0xF4898D60
.long 0xF6603D99
.long 0xF83E0F84
.long 0xFA232CF3
.long 0xFC0FC0FD
.long 0xFE03F810
.long 0x2000000
.long 0x81020409
.long 0x82082083
.long 0x83126E98
.long 0x84210843
.long 0x85340854
.long 0x864B8A7E
.long 0x8767AB60
.long 0x88888889
.long 0x89AE408A
.long 0x8AD8F2FC
.long 0x8C08C08D
.long 0x8D3DCB09
.long 0x8E78356E
.long 0x8FB823EF
.long 0x90FDBC0A
.long 0x92492493
.long 0x939A85C5
.long 0x94F20950
.long 0x964FDA6D
.long 0x97B425EE
.long 0x991F1A52
.long 0x9A90E7DA
.long 0x9C09C09D
.long 0x9D89D89E
.long 0x9F1165E8
.long 0xA0A0A0A1
.long 0xA237C32C
.long 0xA3D70A3E
.long 0xA57EB503
.long 0xA72F053A
.long 0xA8E83F58
.long 0xAAAAAAAB
.long 0xAC769185
.long 0xAE4C415D
.long 0xB02C0B03
.long 0xB21642C9
.long 0xB40B40B5
.long 0xB60B60B7
.long 0xB81702E1
.long 0xBA2E8BA3
.long 0xBC52640C
.long 0xBE82FA0C
.long 0xC0C0C0C1
.long 0xC30C30C4
.long 0xC565C87C
.long 0xC7CE0C7D
.long 0xCA4587E7
.long 0xCCCCCCCD
.long 0xCF6474A9
.long 0xD20D20D3
.long 0xD4C77B04
.long 0xD79435E6
.long 0xDA740DA8
.long 0xDD67C8A7
.long 0xE070381D
.long 0xE38E38E4
.long 0xE6C2B449
.long 0xEA0EA0EB
.long 0xED7303B6
.long 0xF0F0F0F1
.long 0xF4898D60
.long 0xF83E0F84
.long 0xFC0FC0FD
.long 0x4000000
.long 0x82082083
.long 0x84210843
.long 0x864B8A7E
.long 0x88888889
.long 0x8AD8F2FC
.long 0x8D3DCB09
.long 0x8FB823EF
.long 0x92492493
.long 0x94F20950
.long 0x97B425EE
.long 0x9A90E7DA
.long 0x9D89D89E
.long 0xA0A0A0A1
.long 0xA3D70A3E
.long 0xA72F053A
.long 0xAAAAAAAB
.long 0xAE4C415D
.long 0xB21642C9
.long 0xB60B60B7
.long 0xBA2E8BA3
.long 0xBE82FA0C
.long 0xC30C30C4
.long 0xC7CE0C7D
.long 0xCCCCCCCD
.long 0xD20D20D3
.long 0xD79435E6
.long 0xDD67C8A7
.long 0xE38E38E4
.long 0xEA0EA0EB
.long 0xF0F0F0F1
.long 0xF83E0F84
.long 0x8000000
.long 0x84210843
.long 0x88888889
.long 0x8D3DCB09
.long 0x92492493
.long 0x97B425EE
.long 0x9D89D89E
.long 0xA3D70A3E
.long 0xAAAAAAAB
.long 0xB21642C9
.long 0xBA2E8BA3
.long 0xC30C30C4
.long 0xCCCCCCCD
.long 0xD79435E6
.long 0xE38E38E4
.long 0xF0F0F0F1
.long 0x10000000
.long 0x88888889
.long 0x92492493
.long 0x9D89D89E
.long 0xAAAAAAAB
.long 0xBA2E8BA3
.long 0xCCCCCCCD
.long 0xE38E38E4
.long 0x20000000
.long 0x92492493
.long 0xAAAAAAAB
.long 0xCCCCCCCD
.long 0x40000000
.long 0xAAAAAAAB
.long 0x80000000
__muldiv:
neg r4,r2
ld.as r5,[pcl,r4]
abs_s r12,r0
bic.f 0,r2,r4
mpyhu.ne r12,r12,r5
norm r3,r2
xor.f 0,r0,r1
; write port allocation stall
rsub r3,r3,30
lsr r0,r12,r3
j_s.d [blink]
neg.mi r0,r0
.balign 4
SYM(__divsi3):
norm r3,r1
abs_s r2,r1
brhs r3,23,__muldiv
norm r4,r0
abs_l r12,r0
brhs r4,r3,.Lonebit
asl_s r2,r2,r3
asl r12,r12,r4
sub lp_count,r3,r4
sub.f r12,r12,r2
brge.d r12,r2,.Lsbit
sub r4,r3,r4
add.lo r12,r12,r2
lp .Ldivend
.Ldivstart:divaw r12,r12,r2
.Ldivend:xor_s r1,r1,r0
sub r0,r4,1
bmsk r0,r12,r0
bset.hs r0,r0,r4
tst_s r1,r1
j_s.d [blink]
neg.mi r0,r0
.Lonebit:
xor_s r1,r1,r0
asr_s r1,r1,31
sub1.f 0,r12,r2 ; special case: -2**(n+1) / 2**n
or r0,r1,1
add.eq r0,r0,r0
cmp_s r12,r2
j_s.d [blink]
mov.lo r0,0
.Lsbit:
; Need to handle special cases involving negative powers of two:
; r12,r2 are normalized dividend / divisor;
; divide anything by 0x80000000, or divide 0x80000000 by 0x40000000
add_s r12,r12,r2
xor_s r1,r1,r0
rsub r4,r4,-1
ror r0,r12,r4
tst_s r2,r2
bmsk r0,r0,r3
add.pl r0,r0,r0
tst_s r1,r1
j_s.d [blink]
neg.mi r0,r0
#else /* !MULDIV */
/* This version requires that divaw works with a divisor of 0x80000000U */
abs_s r2,r1
norm r4,r0
neg_s r3,r2
norm r3,r3
abs_s r12,r0
brhs r4,r3,.Lonebit
asl_s r2,r2,r3
asl r12,r12,r4
sub lp_count,r3,r4
cmp_s r12,r2
sub.hs r12,r12,r2
lp .Ldivend
.Ldivstart:divaw r12,r12,r2
.Ldivend:xor_s r1,r1,r0
sub_s r0,r3,1
bmsk r0,r12,r0
bset.hs r0,r0,r3
tst_s r1,r1
j_s.d [blink]
negmi r0,r0
.Lonebit:
xor_s r1,r1,r0
asr_s r1,r1,31
cmp_s r12,r2
mov_s r0,0
j_s.d [blink]
orhs r0,r1,1
#endif /* MULDIV */
#endif /* ifndef __ARC700__ */
ENDFUNC(__divsi3)
#endif /* L_divsi3 */
#ifdef L_umodsi3
.section .text
.align 4
.global SYM(__umodsi3)
FUNC(__umodsi3)
SYM(__umodsi3):
mov r7,blink
bl.nd @SYM(__udivmodsi4)
j.d [r7]
mov r0,r1
ENDFUNC(__umodsi3)
#if 0 /* interferes with linux loader */
.section .__arc_profile_forward, "a"
.long SYM(__umodsi3)
.long SYM(__udivmodsi4)
.long 65536
#endif
#endif /* L_umodsi3 */
#ifdef L_modsi3
.section .text
.align 4
.global SYM (__modsi3)
FUNC(__modsi3)
SYM(__modsi3):
#ifndef __ARC700__
/* A5 / ARC60? */
mov_s r12,blink
mov_s r6,r0
abs_s r0,r0
bl.d @SYM(__udivmodsi4)
abs_s r1,r1
tst r6,r6
neg_s r0,r1
j_s.d [r12]
mov.pl r0,r1
#else /* __ARC700__ */
abs_s r2,r1
norm.f r4,r0
neg r5,r2
norm r3,r5
abs_l r12,r0
brhs r4,r3,.Lonebit
asl_s r2,r2,r3
asl r12,r12,r4
sub lp_count,r3,r4
cmp_s r12,r2
sub.hs r12,r12,r2
tst_s r0,r0
lp .Ldivend
.Ldivstart:divaw r12,r12,r2
.Ldivend:
lsr r0,r12,r3
j_s.d [blink]
neg.mi r0,r0
.balign 4
.Lonebit:neg.pl r5,r5
cmp_s r12,r2
j_s.d [blink]
sub.hs r0,r0,r5
#endif /* __ARC700__ */
ENDFUNC(__modsi3)
#endif /* L_modsi3 */
#ifdef L_clzsi2
.section .text
.align 4
.global SYM (__clzsi2)
SYM(__clzsi2):
#ifdef __ARC_NORM__
HIDDEN_FUNC(__clzsi2)
norm.f r0,r0
mov.n r0,0
j_s.d [blink]
add.pl r0,r0,1
ENDFUNC(__clzsi2)
#elif defined (__ARC601__)
FUNC(__clzsi2)
mov lp_count,10
mov_l r1,0
bset r2,r1,29
lp .Loop_end
brhs r0,r2,.Loop_end
add3 r0,r1,r0
.Loop_end:
asl.f 0,r0
sub2 r0,lp_count,lp_count
sub.cs.f r0,r0,1
add r0,r0,31
j_s.d [blink]
add.pl r0,r0,1
ENDFUNC(__clzsi2)
#else
FUNC(__clzsi2)
asl.f 0,r0,2
mov r1,-1
.Lcheck:
bbit1.d r0,31,.Ldone
asl.pl r0,r0,3
bcs.d .Ldone_1
add_s r1,r1,3
bpnz.d .Lcheck
asl.f 0,r0,2
mov_s r0,32
j_s.d [blink]
mov.ne r0,r1
.Ldone:
j_s.d [blink]
add_s r0,r1,1
.Ldone_1:
j_s.d [blink]
sub_s r0,r1,1
ENDFUNC(__clzsi2)
#endif
#endif /* L_clzsi2 */
.section .text
;;; MILLICODE THUNK LIB ;***************
;;; .macro push_regs from, to, offset
;;; st_s "\from", [sp, \offset]
;;; .if \to-\from
;;; push_regs "(\from+1)", \to, "(\offset+4)"
;;; .endif
;;; .endm
;;; push_regs 13, 18, 0
;;;
;;;; .macro sum from, to, three
;;;; .long \from
;;;; .long \three
;;;; .local regno
;;;; .set regno, \from+1
;;;; .set shift, 32
;;;; .set shift, shift - 1
;;;; # st_s %shift @3 lsl #shift
;;;; .if \to-\from
;;;; sum "(\from+1)", \to, "(\three)"
;;;; .endif
;;;; .endm
;;;;
;;;; SUM 0,5, 9
;;;;
; .altmacro
;; .macro push_regs from=0, to=3, offset
;; st_s r\from, [sp, \offset]
;; .if \to-\from
;; push_regs "\from+1 ",\to,"(\offset+4)"
;; .endif
;; .endm
;;
;; .macro expand_to_push from=13, to
;; ; .section .text
;; ; .align 4
;; ; .global st_
;; ; .type foo,
;; st_13_to_25:
;; ; push_regs \from, \to, 0
;; push_regs 0,3 ;
;; .endm
;;
;; expand_to_push 13,18
;;
;#endif
#ifdef L_millicodethunk_st
.section .text
.align 4
.global SYM(__st_r13_to_r15)
.global SYM(__st_r13_to_r16)
.global SYM(__st_r13_to_r17)
.global SYM(__st_r13_to_r18)
.global SYM(__st_r13_to_r19)
.global SYM(__st_r13_to_r20)
.global SYM(__st_r13_to_r21)
.global SYM(__st_r13_to_r22)
.global SYM(__st_r13_to_r23)
.global SYM(__st_r13_to_r24)
.global SYM(__st_r13_to_r25)
HIDDEN_FUNC(__st_r13_to_r15)
HIDDEN_FUNC(__st_r13_to_r16)
HIDDEN_FUNC(__st_r13_to_r17)
HIDDEN_FUNC(__st_r13_to_r18)
HIDDEN_FUNC(__st_r13_to_r19)
HIDDEN_FUNC(__st_r13_to_r20)
HIDDEN_FUNC(__st_r13_to_r21)
HIDDEN_FUNC(__st_r13_to_r22)
HIDDEN_FUNC(__st_r13_to_r23)
HIDDEN_FUNC(__st_r13_to_r24)
HIDDEN_FUNC(__st_r13_to_r25)
.align 4
SYM(__st_r13_to_r25):
st r25, [sp,48]
SYM(__st_r13_to_r24):
st r24, [sp,44]
SYM(__st_r13_to_r23):
st r23, [sp,40]
SYM(__st_r13_to_r22):
st r22, [sp,36]
SYM(__st_r13_to_r21):
st r21, [sp,32]
SYM(__st_r13_to_r20):
st r20, [sp,28]
SYM(__st_r13_to_r19):
st r19, [sp,24]
SYM(__st_r13_to_r18):
st r18, [sp,20]
SYM(__st_r13_to_r17):
st r17, [sp,16]
SYM(__st_r13_to_r16):
st r16, [sp,12]
SYM(__st_r13_to_r15):
#ifdef __ARC700__
st r15, [sp,8] ; minimum function size to avoid stall: 6 bytes.
#else
st_s r15, [sp,8]
#endif
st_s r14, [sp,4]
j_s.d [%blink]
st_s r13, [sp,0]
ENDFUNC(__st_r13_to_r15)
ENDFUNC(__st_r13_to_r16)
ENDFUNC(__st_r13_to_r17)
ENDFUNC(__st_r13_to_r18)
ENDFUNC(__st_r13_to_r19)
ENDFUNC(__st_r13_to_r20)
ENDFUNC(__st_r13_to_r21)
ENDFUNC(__st_r13_to_r22)
ENDFUNC(__st_r13_to_r23)
ENDFUNC(__st_r13_to_r24)
ENDFUNC(__st_r13_to_r25)
#endif /* L_millicodethunk_st */
#ifdef L_millicodethunk_ld
.section .text
.align 4
; ==================================
; the loads
.global SYM(__ld_r13_to_r15)
.global SYM(__ld_r13_to_r16)
.global SYM(__ld_r13_to_r17)
.global SYM(__ld_r13_to_r18)
.global SYM(__ld_r13_to_r19)
.global SYM(__ld_r13_to_r20)
.global SYM(__ld_r13_to_r21)
.global SYM(__ld_r13_to_r22)
.global SYM(__ld_r13_to_r23)
.global SYM(__ld_r13_to_r24)
.global SYM(__ld_r13_to_r25)
HIDDEN_FUNC(__ld_r13_to_r15)
HIDDEN_FUNC(__ld_r13_to_r16)
HIDDEN_FUNC(__ld_r13_to_r17)
HIDDEN_FUNC(__ld_r13_to_r18)
HIDDEN_FUNC(__ld_r13_to_r19)
HIDDEN_FUNC(__ld_r13_to_r20)
HIDDEN_FUNC(__ld_r13_to_r21)
HIDDEN_FUNC(__ld_r13_to_r22)
HIDDEN_FUNC(__ld_r13_to_r23)
HIDDEN_FUNC(__ld_r13_to_r24)
HIDDEN_FUNC(__ld_r13_to_r25)
SYM(__ld_r13_to_r25):
ld r25, [sp,48]
SYM(__ld_r13_to_r24):
ld r24, [sp,44]
SYM(__ld_r13_to_r23):
ld r23, [sp,40]
SYM(__ld_r13_to_r22):
ld r22, [sp,36]
SYM(__ld_r13_to_r21):
ld r21, [sp,32]
SYM(__ld_r13_to_r20):
ld r20, [sp,28]
SYM(__ld_r13_to_r19):
ld r19, [sp,24]
SYM(__ld_r13_to_r18):
ld r18, [sp,20]
SYM(__ld_r13_to_r17):
ld r17, [sp,16]
SYM(__ld_r13_to_r16):
ld r16, [sp,12]
SYM(__ld_r13_to_r15):
#ifdef __ARC700__
ld r15, [sp,8] ; minimum function size to avoid stall: 6 bytes.
#else
ld_s r15, [sp,8]
#endif
ld_s r14, [sp,4]
j_s.d [%blink]
ld_s r13, [sp,0]
ENDFUNC(__ld_r13_to_r15)
ENDFUNC(__ld_r13_to_r16)
ENDFUNC(__ld_r13_to_r17)
ENDFUNC(__ld_r13_to_r18)
ENDFUNC(__ld_r13_to_r19)
ENDFUNC(__ld_r13_to_r20)
ENDFUNC(__ld_r13_to_r21)
ENDFUNC(__ld_r13_to_r22)
ENDFUNC(__ld_r13_to_r23)
ENDFUNC(__ld_r13_to_r24)
ENDFUNC(__ld_r13_to_r25)
#endif /* L_millicodethunk_ld */
#ifdef L_millicodethunk_ret
.global SYM(__ld_r13_to_r14_ret)
.global SYM(__ld_r13_to_r15_ret)
.global SYM(__ld_r13_to_r16_ret)
.global SYM(__ld_r13_to_r17_ret)
.global SYM(__ld_r13_to_r18_ret)
.global SYM(__ld_r13_to_r19_ret)
.global SYM(__ld_r13_to_r20_ret)
.global SYM(__ld_r13_to_r21_ret)
.global SYM(__ld_r13_to_r22_ret)
.global SYM(__ld_r13_to_r23_ret)
.global SYM(__ld_r13_to_r24_ret)
.global SYM(__ld_r13_to_r25_ret)
HIDDEN_FUNC(__ld_r13_to_r14_ret)
HIDDEN_FUNC(__ld_r13_to_r15_ret)
HIDDEN_FUNC(__ld_r13_to_r16_ret)
HIDDEN_FUNC(__ld_r13_to_r17_ret)
HIDDEN_FUNC(__ld_r13_to_r18_ret)
HIDDEN_FUNC(__ld_r13_to_r19_ret)
HIDDEN_FUNC(__ld_r13_to_r20_ret)
HIDDEN_FUNC(__ld_r13_to_r21_ret)
HIDDEN_FUNC(__ld_r13_to_r22_ret)
HIDDEN_FUNC(__ld_r13_to_r23_ret)
HIDDEN_FUNC(__ld_r13_to_r24_ret)
HIDDEN_FUNC(__ld_r13_to_r25_ret)
.section .text
.align 4
SYM(__ld_r13_to_r25_ret):
ld r25, [sp,48]
SYM(__ld_r13_to_r24_ret):
ld r24, [sp,44]
SYM(__ld_r13_to_r23_ret):
ld r23, [sp,40]
SYM(__ld_r13_to_r22_ret):
ld r22, [sp,36]
SYM(__ld_r13_to_r21_ret):
ld r21, [sp,32]
SYM(__ld_r13_to_r20_ret):
ld r20, [sp,28]
SYM(__ld_r13_to_r19_ret):
ld r19, [sp,24]
SYM(__ld_r13_to_r18_ret):
ld r18, [sp,20]
SYM(__ld_r13_to_r17_ret):
ld r17, [sp,16]
SYM(__ld_r13_to_r16_ret):
ld r16, [sp,12]
SYM(__ld_r13_to_r15_ret):
ld r15, [sp,8]
SYM(__ld_r13_to_r14_ret):
ld blink,[sp,r12]
ld_s r14, [sp,4]
ld.ab r13, [sp,r12]
j_s.d [%blink]
add_s sp,sp,4
ENDFUNC(__ld_r13_to_r14_ret)
ENDFUNC(__ld_r13_to_r15_ret)
ENDFUNC(__ld_r13_to_r16_ret)
ENDFUNC(__ld_r13_to_r17_ret)
ENDFUNC(__ld_r13_to_r18_ret)
ENDFUNC(__ld_r13_to_r19_ret)
ENDFUNC(__ld_r13_to_r20_ret)
ENDFUNC(__ld_r13_to_r21_ret)
ENDFUNC(__ld_r13_to_r22_ret)
ENDFUNC(__ld_r13_to_r23_ret)
ENDFUNC(__ld_r13_to_r24_ret)
ENDFUNC(__ld_r13_to_r25_ret)
#endif /* L_millicodethunk_ret */
#ifdef L_adddf3
#ifdef __ARC_NORM__
#include "ieee-754/adddf3.S"
#endif
#endif
#ifdef L_muldf3
#ifdef __ARC700__
#include "ieee-754/muldf3.S"
#elif defined (__ARC_NORM__) && defined(__ARC_MUL64__)
#include "ieee-754/arc600-mul64/muldf3.S"
#elif defined (__ARC_NORM__) && defined(__ARC_MUL32BY16__)
#include "ieee-754/arc600-dsp/muldf3.S"
#endif
#endif
#ifdef L_addsf3
#ifdef __ARC_NORM__
#include "ieee-754/addsf3.S"
#endif
#endif
#ifdef L_mulsf3
#ifdef __ARC700__
#include "ieee-754/mulsf3.S"
#elif defined (__ARC_NORM__) && defined(__ARC_MUL64__)
#include "ieee-754/arc600-mul64/mulsf3.S"
#elif defined (__ARC_NORM__) && defined(__ARC_MUL32BY16__)
#include "ieee-754/arc600-dsp/mulsf3.S"
#elif defined (__ARC_NORM__)
#include "ieee-754/arc600/mulsf3.S"
#endif
#endif
#ifdef L_divdf3
#ifdef __ARC700__
#include "ieee-754/divdf3.S"
#elif defined (__ARC_NORM__) && defined(__ARC_MUL64__)
#include "ieee-754/arc600-mul64/divdf3.S"
#elif defined (__ARC_NORM__) && defined(__ARC_MUL32BY16__)
#include "ieee-754/arc600-dsp/divdf3.S"
#endif
#endif
#ifdef L_divsf3
#ifdef __ARC700__
#include "ieee-754/divsf3-stdmul.S"
#elif defined (__ARC_NORM__) && defined(__ARC_MUL64__)
#include "ieee-754/arc600-mul64/divsf3.S"
#elif defined (__ARC_NORM__) && defined(__ARC_MUL32BY16__)
#include "ieee-754/arc600-dsp/divsf3.S"
#elif defined (__ARC_NORM__)
#include "ieee-754/arc600/divsf3.S"
#endif
#endif
#ifdef L_extendsfdf2
#ifdef __ARC_NORM__
#include "ieee-754/extendsfdf2.S"
#endif
#endif
#ifdef L_truncdfsf2
#ifdef __ARC_NORM__
#include "ieee-754/truncdfsf2.S"
#endif
#endif
#ifdef L_floatsidf
#ifdef __ARC_NORM__
#include "ieee-754/floatsidf.S"
#endif
#endif
#ifdef L_floatsisf
#ifdef __ARC_NORM__
#include "ieee-754/floatsisf.S"
#endif
#endif
#ifdef L_floatunsidf
#ifdef __ARC_NORM__
#include "ieee-754/floatunsidf.S"
#endif
#endif
#ifdef L_fixdfsi
#ifdef __ARC_NORM__
#include "ieee-754/fixdfsi.S"
#endif
#endif
#ifdef L_fixsfsi
#ifdef __ARC_NORM__
#include "ieee-754/fixsfsi.S"
#endif
#endif
#ifdef L_fixunsdfsi
#ifdef __ARC_NORM__
#include "ieee-754/fixunsdfsi.S"
#endif
#endif
#ifdef L_eqdf2
#ifdef __ARC_NORM__
#include "ieee-754/eqdf2.S"
#endif
#endif
#ifdef L_eqsf2
#ifdef __ARC_NORM__
#include "ieee-754/eqsf2.S"
#endif
#endif
#ifdef L_gtdf2
#ifdef __ARC_NORM__
#include "ieee-754/gtdf2.S"
#endif
#endif
#ifdef L_gtsf2
#ifdef __ARC_NORM__
#include "ieee-754/gtsf2.S"
#endif
#endif
#ifdef L_gedf2
#ifdef __ARC_NORM__
#include "ieee-754/gedf2.S"
#endif
#endif
#ifdef L_gesf2
#ifdef __ARC_NORM__
#include "ieee-754/gesf2.S"
#endif
#endif
#ifdef L_uneqdf2
#ifdef __ARC_NORM__
#include "ieee-754/uneqdf2.S"
#endif
#endif
#ifdef L_uneqsf2
#ifdef __ARC_NORM__
#include "ieee-754/uneqsf2.S"
#endif
#endif
#ifdef L_orddf2
#ifdef __ARC_NORM__
#include "ieee-754/orddf2.S"
#endif
#endif
#ifdef L_ordsf2
#ifdef __ARC_NORM__
#include "ieee-754/ordsf2.S"
#endif
#endif
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