mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 03:10:05 +00:00
ee6189855a
equivalent, but shorter instructions. * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/setcontext.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/clone.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/swapcontext.S: Likewise. * sysdeps/unix/x86_64/sysdep.S: Likewise. * sysdeps/x86_64/strchr.S: Likewise. * sysdeps/x86_64/memset.S: Likewise. * sysdeps/x86_64/strcspn.S: Likewise. * sysdeps/x86_64/strcmp.S: Likewise. * sysdeps/x86_64/elf/start.S: Likewise. * sysdeps/x86_64/strspn.S: Likewise. * sysdeps/x86_64/dl-machine.h: Likewise. * sysdeps/x86_64/bsd-_setjmp.S: Likewise. * sysdeps/x86_64/bsd-setjmp.S: Likewise. * sysdeps/x86_64/strtok.S: Likewise.
673 lines
14 KiB
ArmAsm
673 lines
14 KiB
ArmAsm
.file "fmodl.s"
|
|
|
|
|
|
// Copyright (c) 2000 - 2004, Intel Corporation
|
|
// All rights reserved.
|
|
//
|
|
// Contributed 2000 by the Intel Numerics Group, Intel Corporation
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are
|
|
// met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
//
|
|
// * 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.
|
|
//
|
|
// * The name of Intel Corporation may not be used to endorse or promote
|
|
// products derived from this software without specific prior written
|
|
// permission.
|
|
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "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 INTEL OR ITS
|
|
// CONTRIBUTORS 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.
|
|
//
|
|
// Intel Corporation is the author of this code, and requests that all
|
|
// problem reports or change requests be submitted to it directly at
|
|
// http://www.intel.com/software/products/opensource/libraries/num.htm.
|
|
//
|
|
// History
|
|
//====================================================================
|
|
// 02/02/00 Initial version
|
|
// 03/02/00 New Algorithm
|
|
// 04/04/00 Unwind support added
|
|
// 08/15/00 Bundle added after call to __libm_error_support to properly
|
|
// set [ the previously overwritten ] GR_Parameter_RESULT.
|
|
// 11/28/00 Set FR_Y to f9
|
|
// 03/11/02 Fixed flags for fmodl(qnan, zero)
|
|
// 05/20/02 Cleaned up namespace and sf0 syntax
|
|
// 02/10/03 Reordered header:.section,.global,.proc,.align
|
|
// 04/28/03 Fix: fmod(sNaN, 0) no longer sets errno
|
|
// 11/23/04 Reformatted routine and improved speed
|
|
//
|
|
// API
|
|
//====================================================================
|
|
// long double fmodl(long double, long double);
|
|
//
|
|
// Overview of operation
|
|
//====================================================================
|
|
// fmod(a, b)= a-i*b,
|
|
// where i is an integer such that, if b!= 0,
|
|
// |i|<|a/b| and |a/b-i|<1
|
|
//
|
|
// Algorithm
|
|
//====================================================================
|
|
// a). if |a|<|b|, return a
|
|
// b). get quotient and reciprocal overestimates accurate to
|
|
// 33 bits (q2, y2)
|
|
// c). if the exponent difference (exponent(a)-exponent(b))
|
|
// is less than 32, truncate quotient to integer and
|
|
// finish in one iteration
|
|
// d). if exponent(a)-exponent(b)>= 32 (q2>= 2^32)
|
|
// round quotient estimate to single precision (k= RN(q2)),
|
|
// calculate partial remainder (a'= a-k*b),
|
|
// get quotient estimate (a'*y2), and repeat from c).
|
|
//
|
|
// Registers used
|
|
//====================================================================
|
|
|
|
GR_SMALLBIASEXP = r2
|
|
GR_2P32 = r3
|
|
GR_SMALLBIASEXP = r20
|
|
GR_ROUNDCONST = r21
|
|
GR_SIG_B = r22
|
|
GR_ARPFS = r23
|
|
GR_TMP1 = r24
|
|
GR_TMP2 = r25
|
|
GR_TMP3 = r26
|
|
|
|
GR_SAVE_B0 = r33
|
|
GR_SAVE_PFS = r34
|
|
GR_SAVE_GP = r35
|
|
GR_SAVE_SP = r36
|
|
|
|
GR_Parameter_X = r37
|
|
GR_Parameter_Y = r38
|
|
GR_Parameter_RESULT = r39
|
|
GR_Parameter_TAG = r40
|
|
|
|
FR_X = f10
|
|
FR_Y = f9
|
|
FR_RESULT = f8
|
|
|
|
FR_ABS_A = f6
|
|
FR_ABS_B = f7
|
|
FR_Y_INV = f10
|
|
FR_SMALLBIAS = f11
|
|
FR_E0 = f12
|
|
FR_Q = f13
|
|
FR_E1 = f14
|
|
FR_2P32 = f15
|
|
FR_TMPX = f32
|
|
FR_TMPY = f33
|
|
FR_ROUNDCONST = f34
|
|
FR_QINT = f35
|
|
FR_QRND24 = f36
|
|
FR_NORM_B = f37
|
|
FR_TMP = f38
|
|
FR_TMP2 = f39
|
|
FR_DFLAG = f40
|
|
FR_Y_INV0 = f41
|
|
FR_Y_INV1 = f42
|
|
FR_Q0 = f43
|
|
FR_Q1 = f44
|
|
FR_QINT_Z = f45
|
|
FR_QREM = f46
|
|
FR_B_SGN_A = f47
|
|
|
|
.section .text
|
|
GLOBAL_IEEE754_ENTRY(fmodl)
|
|
|
|
// inputs in f8, f9
|
|
// result in f8
|
|
|
|
{ .mfi
|
|
getf.sig GR_SIG_B = f9
|
|
// FR_ABS_A = |a|
|
|
fmerge.s FR_ABS_A = f0, f8
|
|
mov GR_SMALLBIASEXP = 0x0ffdd
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
// FR_ABS_B = |b|
|
|
fmerge.s FR_ABS_B = f0, f9
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
setf.exp FR_SMALLBIAS = GR_SMALLBIASEXP
|
|
// (1) y0
|
|
frcpa.s1 FR_Y_INV0, p6 = FR_ABS_A, FR_ABS_B
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mlx
|
|
nop.m 0
|
|
movl GR_ROUNDCONST = 0x33a00000
|
|
}
|
|
;;
|
|
|
|
// eliminate special cases
|
|
{ .mmi
|
|
nop.m 0
|
|
nop.m 0
|
|
// y pseudo-zero ?
|
|
cmp.eq p7, p10 = GR_SIG_B, r0
|
|
}
|
|
;;
|
|
|
|
// set p7 if b +/-NAN, +/-inf, +/-0
|
|
{ .mfi
|
|
nop.m 0
|
|
(p10) fclass.m p7, p10 = f9, 0xe7
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
mov GR_2P32 = 0x1001f
|
|
// (2) q0 = a*y0
|
|
(p6) fma.s1 FR_Q0 = FR_ABS_A, FR_Y_INV0, f0
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
// (3) e0 = 1 - b * y0
|
|
(p6) fnma.s1 FR_E0 = FR_ABS_B, FR_Y_INV0, f1
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
// set p9 if a +/-NAN, +/-inf
|
|
{ .mfi
|
|
nop.m 0
|
|
fclass.m.unc p9, p11 = f8, 0xe3
|
|
nop.i 0
|
|
}
|
|
// |a| < |b|? Return a, p8=1
|
|
{ .mfi
|
|
nop.m 0
|
|
(p10) fcmp.lt.unc.s1 p8, p0 = FR_ABS_A, FR_ABS_B
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
// set p7 if b +/-NAN, +/-inf, +/-0
|
|
{ .mfi
|
|
nop.m 0
|
|
// pseudo-NaN ?
|
|
(p10) fclass.nm p7, p0 = f9, 0xff
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
// set p9 if a is +/-NaN, +/-Inf
|
|
{ .mfi
|
|
nop.m 0
|
|
(p11) fclass.nm p9, p0 = f8, 0xff
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
// b denormal ? set D flag (if |a|<|b|)
|
|
(p8) fnma.s0 FR_DFLAG = f9, f1, f9
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
// FR_2P32 = 2^32
|
|
setf.exp FR_2P32 = GR_2P32
|
|
// (4) q1 = q0+e0*q0
|
|
(p6) fma.s1 FR_Q1 = FR_E0, FR_Q0, FR_Q0
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
// (5) e1 = e0 * e0 + 2^-34
|
|
(p6) fma.s1 FR_E1 = FR_E0, FR_E0, FR_SMALLBIAS
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
// normalize a (if |a|<|b|)
|
|
(p8) fma.s0 f8 = f8, f1, f0
|
|
nop.i 0
|
|
}
|
|
{ .bbb
|
|
(p9) br.cond.spnt FMOD_A_NAN_INF
|
|
(p7) br.cond.spnt FMOD_B_NAN_INF_ZERO
|
|
// if |a|<|b|, return
|
|
(p8) br.ret.spnt b0
|
|
}
|
|
;;
|
|
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
// (6) y1 = y0 + e0 * y0
|
|
(p6) fma.s1 FR_Y_INV1 = FR_E0, FR_Y_INV0, FR_Y_INV0
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
// a denormal ? set D flag
|
|
// b denormal ? set D flag
|
|
fcmp.eq.s0 p12,p0 = FR_ABS_A, FR_ABS_B
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
// set FR_ROUNDCONST = 1.25*2^{-24}
|
|
setf.s FR_ROUNDCONST = GR_ROUNDCONST
|
|
// (7) q2 = q1+e1*q1
|
|
(p6) fma.s1 FR_Q = FR_Q1, FR_E1, FR_Q1
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
fmerge.s FR_B_SGN_A = f8, f9
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
// (8) y2 = y1 + e1 * y1
|
|
(p6) fma.s1 FR_Y_INV = FR_E1, FR_Y_INV1, FR_Y_INV1
|
|
// set p6 = 0, p10 = 0
|
|
cmp.ne.and p6, p10 = r0, r0
|
|
}
|
|
;;
|
|
|
|
// will compute integer quotient bits (24 bits per iteration)
|
|
.align 32
|
|
loop64:
|
|
{ .mfi
|
|
nop.m 0
|
|
// compare q2, 2^32
|
|
fcmp.lt.unc.s1 p8, p7 = FR_Q, FR_2P32
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
// will truncate quotient to integer, if exponent<32 (in advance)
|
|
fcvt.fx.trunc.s1 FR_QINT = FR_Q
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
// if exponent>32 round quotient to single precision (perform in advance)
|
|
fma.s.s1 FR_QRND24 = FR_Q, f1, f0
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
// set FR_ROUNDCONST = sgn(a)
|
|
(p8) fmerge.s FR_ROUNDCONST = f8, f1
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
// normalize truncated quotient
|
|
(p8) fcvt.xf FR_QRND24 = FR_QINT
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
// calculate remainder (assuming FR_QRND24 = RZ(Q))
|
|
(p7) fnma.s1 FR_E1 = FR_QRND24, FR_ABS_B, FR_ABS_A
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
// also if exponent>32, round quotient to single precision
|
|
// and subtract 1 ulp: q = q-q*(1.25*2^{-24})
|
|
(p7) fnma.s.s1 FR_QINT_Z = FR_QRND24, FR_ROUNDCONST, FR_QRND24
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
// (p8) calculate remainder (82-bit format)
|
|
(p8) fnma.s1 FR_QREM = FR_QRND24, FR_ABS_B, FR_ABS_A
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
// (p7) calculate remainder (assuming FR_QINT_Z = RZ(Q))
|
|
(p7) fnma.s1 FR_ABS_A = FR_QINT_Z, FR_ABS_B, FR_ABS_A
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
// Final iteration (p8): is FR_ABS_A the correct remainder
|
|
// (quotient was not overestimated) ?
|
|
(p8) fcmp.lt.unc.s1 p6, p10 = FR_QREM, f0
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
// get new quotient estimation: a'*y2
|
|
(p7) fma.s1 FR_Q = FR_E1, FR_Y_INV, f0
|
|
nop.i 0
|
|
}
|
|
{ .mfb
|
|
nop.m 0
|
|
// was FR_Q = RZ(Q) ? (then new remainder FR_E1> = 0)
|
|
(p7) fcmp.lt.unc.s1 p7, p9 = FR_E1, f0
|
|
nop.b 0
|
|
}
|
|
;;
|
|
|
|
.pred.rel "mutex", p6, p10
|
|
{ .mfb
|
|
nop.m 0
|
|
// add b to estimated remainder (to cover the case when the quotient was
|
|
// overestimated)
|
|
// also set correct sign by using
|
|
// FR_B_SGN_A = |b|*sgn(a), FR_ROUNDCONST = sgn(a)
|
|
(p6) fma.s0 f8 = FR_QREM, FR_ROUNDCONST, FR_B_SGN_A
|
|
nop.b 0
|
|
}
|
|
{ .mfb
|
|
nop.m 0
|
|
// set correct sign of result before returning: FR_ROUNDCONST = sgn(a)
|
|
(p10) fma.s0 f8 = FR_QREM, FR_ROUNDCONST, f0
|
|
(p8) br.ret.sptk b0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
// if f13! = RZ(Q), get alternative quotient estimation: a''*y2
|
|
(p7) fma.s1 FR_Q = FR_ABS_A, FR_Y_INV, f0
|
|
nop.i 0
|
|
}
|
|
{ .mfb
|
|
nop.m 0
|
|
// if FR_E1 was RZ(Q), set remainder to FR_E1
|
|
(p9) fma.s1 FR_ABS_A = FR_E1, f1, f0
|
|
br.cond.sptk loop64
|
|
}
|
|
;;
|
|
|
|
FMOD_A_NAN_INF:
|
|
|
|
// b zero ?
|
|
{ .mfi
|
|
nop.m 0
|
|
fclass.m p10, p0 = f8, 0xc3 // Test a = nan
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
fma.s1 FR_NORM_B = f9, f1, f0
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
fma.s0 f8 = f8, f1, f0
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
(p10) fclass.m p10, p0 = f9, 0x07 // Test x = nan, and y = zero
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfb
|
|
nop.m 0
|
|
fcmp.eq.unc.s1 p11, p0 = FR_NORM_B, f0
|
|
(p10) br.ret.spnt b0 // Exit with result = a if a = nan and b = zero
|
|
}
|
|
;;
|
|
|
|
{ .mib
|
|
nop.m 0
|
|
nop.i 0
|
|
// if Y zero
|
|
(p11) br.cond.spnt FMOD_B_ZERO
|
|
}
|
|
;;
|
|
|
|
// a= infinity? Return QNAN indefinite
|
|
{ .mfi
|
|
// set p7 t0 0
|
|
cmp.ne p7, p0 = r0, r0
|
|
fclass.m.unc p8, p9 = f8, 0x23
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
// b NaN ?
|
|
{ .mfi
|
|
nop.m 0
|
|
(p8) fclass.m p9, p8 = f9, 0xc3
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
// b not pseudo-zero ? (GR_SIG_B holds significand)
|
|
{ .mii
|
|
nop.m 0
|
|
(p8) cmp.ne p7, p0 = GR_SIG_B, r0
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
(p8) frcpa.s0 f8, p0 = f8, f8
|
|
nop.i 0
|
|
}
|
|
{ .mfi
|
|
nop.m 0
|
|
// also set Denormal flag if necessary
|
|
(p7) fnma.s0 f9 = f9, f1, f9
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfb
|
|
nop.m 0
|
|
(p8) fma.s0 f8 = f8, f1, f0
|
|
nop.b 0
|
|
}
|
|
;;
|
|
|
|
{ .mfb
|
|
nop.m 0
|
|
(p9) frcpa.s0 f8, p7 = f8, f9
|
|
br.ret.sptk b0
|
|
}
|
|
;;
|
|
|
|
FMOD_B_NAN_INF_ZERO:
|
|
// b INF
|
|
{ .mfi
|
|
nop.m 0
|
|
fclass.m.unc p7, p0 = f9, 0x23
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfb
|
|
nop.m 0
|
|
(p7) fma.s0 f8 = f8, f1, f0
|
|
(p7) br.ret.spnt b0
|
|
}
|
|
;;
|
|
|
|
// b NAN?
|
|
{ .mfi
|
|
nop.m 0
|
|
fclass.m.unc p9, p10 = f9, 0xc3
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
(p10) fclass.nm p9, p0 = f9, 0xff
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfb
|
|
nop.m 0
|
|
(p9) fma.s0 f8 = f9, f1, f0
|
|
(p9) br.ret.spnt b0
|
|
}
|
|
;;
|
|
|
|
FMOD_B_ZERO:
|
|
// Y zero? Must be zero at this point
|
|
// because it is the only choice left.
|
|
// Return QNAN indefinite
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
// set Invalid
|
|
frcpa.s0 FR_TMP, p0 = f0, f0
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
// a NAN?
|
|
{ .mfi
|
|
nop.m 0
|
|
fclass.m.unc p9, p10 = f8, 0xc3
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
alloc GR_ARPFS = ar.pfs, 1, 4, 4, 0
|
|
(p10) fclass.nm p9, p10 = f8, 0xff
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
(p9) frcpa.s0 FR_TMP2, p7 = f8, f0
|
|
nop.i 0
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
(p10) frcpa.s0 FR_TMP2, p7 = f9, f9
|
|
mov GR_Parameter_TAG = 120
|
|
}
|
|
;;
|
|
|
|
{ .mfi
|
|
nop.m 0
|
|
fmerge.s FR_X = f8, f8
|
|
nop.i 0
|
|
}
|
|
{ .mfb
|
|
nop.m 0
|
|
fma.s0 f8 = FR_TMP2, f1, f0
|
|
br.sptk __libm_error_region
|
|
}
|
|
;;
|
|
|
|
GLOBAL_IEEE754_END(fmodl)
|
|
|
|
LOCAL_LIBM_ENTRY(__libm_error_region)
|
|
.prologue
|
|
{ .mfi
|
|
add GR_Parameter_Y = -32, sp // Parameter 2 value
|
|
nop.f 0
|
|
.save ar.pfs, GR_SAVE_PFS
|
|
mov GR_SAVE_PFS = ar.pfs // Save ar.pfs
|
|
}
|
|
{ .mfi
|
|
.fframe 64
|
|
add sp = -64, sp // Create new stack
|
|
nop.f 0
|
|
mov GR_SAVE_GP = gp // Save gp
|
|
}
|
|
;;
|
|
|
|
{ .mmi
|
|
stfe [ GR_Parameter_Y ] = FR_Y, 16 // Save Parameter 2 on stack
|
|
add GR_Parameter_X = 16, sp // Parameter 1 address
|
|
.save b0, GR_SAVE_B0
|
|
mov GR_SAVE_B0 = b0 // Save b0
|
|
}
|
|
;;
|
|
|
|
.body
|
|
{ .mib
|
|
stfe [ GR_Parameter_X ] = FR_X // Store Parameter 1 on stack
|
|
add GR_Parameter_RESULT = 0, GR_Parameter_Y
|
|
nop.b 0 // Parameter 3 address
|
|
}
|
|
{ .mib
|
|
stfe [ GR_Parameter_Y ] = FR_RESULT // Store Parameter 3 on stack
|
|
add GR_Parameter_Y = -16, GR_Parameter_Y
|
|
br.call.sptk b0 = __libm_error_support# // Call error handling function
|
|
}
|
|
;;
|
|
|
|
{ .mmi
|
|
nop.m 0
|
|
nop.m 0
|
|
add GR_Parameter_RESULT = 48, sp
|
|
}
|
|
;;
|
|
|
|
{ .mmi
|
|
ldfe f8 = [ GR_Parameter_RESULT ] // Get return result off stack
|
|
.restore sp
|
|
add sp = 64, sp // Restore stack pointer
|
|
mov b0 = GR_SAVE_B0 // Restore return address
|
|
}
|
|
;;
|
|
|
|
{ .mib
|
|
mov gp = GR_SAVE_GP // Restore gp
|
|
mov ar.pfs = GR_SAVE_PFS // Restore ar.pfs
|
|
br.ret.sptk b0 // Return
|
|
}
|
|
;;
|
|
|
|
LOCAL_LIBM_END(__libm_error_region)
|
|
|
|
.type __libm_error_support#, @function
|
|
.global __libm_error_support#
|