diff options
Diffstat (limited to 'gcc-4.9/libgcc/config/epiphany')
28 files changed, 1810 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/epiphany/crti.S b/gcc-4.9/libgcc/config/epiphany/crti.S new file mode 100644 index 000000000..f50270adb --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/crti.S @@ -0,0 +1,34 @@ +# Start .init and .fini sections. +# Copyright (C) 2010-2014 Free Software Foundation, Inc. +# Contributed by Embecosm on behalf of Adapteva, 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 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/>. + + .section .init + .global init + .balign 2 +init: + str lr,[sp],-4 + + .section .fini + .global fini + .balign 2 +fini: + str lr,[sp],-4 diff --git a/gcc-4.9/libgcc/config/epiphany/crtint.S b/gcc-4.9/libgcc/config/epiphany/crtint.S new file mode 100644 index 000000000..bd01e4dfc --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/crtint.S @@ -0,0 +1,27 @@ +# initialize config for -mfp-mode=int +# Copyright (C) 2011-2014 Free Software Foundation, Inc. +# Contributed by Embecosm on behalf of Adapteva, 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 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/>. + + .section .init + mov r0, %low(#524288) + movt r0, %high(#524288) + movts config,r0 diff --git a/gcc-4.9/libgcc/config/epiphany/crtm1reg-r43.S b/gcc-4.9/libgcc/config/epiphany/crtm1reg-r43.S new file mode 100644 index 000000000..0df47ef44 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/crtm1reg-r43.S @@ -0,0 +1,26 @@ +# initialize config for -m1reg-r43 +# Copyright (C) 2011-2014 Free Software Foundation, Inc. +# Contributed by Embecosm on behalf of Adapteva, 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 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/>. + + .section .init + mov r0, 0 + sub r43,r0,1 diff --git a/gcc-4.9/libgcc/config/epiphany/crtm1reg-r63.S b/gcc-4.9/libgcc/config/epiphany/crtm1reg-r63.S new file mode 100644 index 000000000..473abee2a --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/crtm1reg-r63.S @@ -0,0 +1,26 @@ +# initialize config for -m1reg-r63 +# Copyright (C) 2011-2014 Free Software Foundation, Inc. +# Contributed by Embecosm on behalf of Adapteva, 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 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/>. + + .section .init + mov r0, 0 + sub r63,r0,1 diff --git a/gcc-4.9/libgcc/config/epiphany/crtn.S b/gcc-4.9/libgcc/config/epiphany/crtn.S new file mode 100644 index 000000000..b21bb32b8 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/crtn.S @@ -0,0 +1,32 @@ +# End .init and .fini sections. +# Copyright (C) 2010-2014 Free Software Foundation, Inc. +# Contributed by Embecosm on behalf of Adapteva, 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 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/>. + + .section .init + ldr lr,[sp,4] + add sp,sp,16 + jr lr + + .section .fini + ldr lr,[sp,4] + add sp,sp,16 + jr lr diff --git a/gcc-4.9/libgcc/config/epiphany/crtrunc.S b/gcc-4.9/libgcc/config/epiphany/crtrunc.S new file mode 100644 index 000000000..95349c86a --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/crtrunc.S @@ -0,0 +1,26 @@ +# initialize config for -mfp-mode=truncate +# Copyright (C) 2011-2014 Free Software Foundation, Inc. +# Contributed by Embecosm on behalf of Adapteva, 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 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/>. + + .section .init + mov r0, 1 + movts config,r0 diff --git a/gcc-4.9/libgcc/config/epiphany/divsi3-float.S b/gcc-4.9/libgcc/config/epiphany/divsi3-float.S new file mode 100644 index 000000000..1e0183a90 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/divsi3-float.S @@ -0,0 +1,77 @@ +/* Signed 32 bit division optimized for Epiphany. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +#include "epiphany-asm.h" + + FSTAB (__divsi3,T_UINT) + .global SYM(__divsi3) + .balign 4 + HIDDEN_FUNC(__divsi3) +SYM(__divsi3): + float TMP2,r0 + mov TMP4,0 + float TMP1,r1 + sub TMP0,TMP4,r0 + beq .Lret_r0 + movgt r0,TMP0 + sub TMP0,TMP4,r1 + movgt r1,TMP0 + mov TMP0,1 + sub TMP2,TMP2,TMP1 + asr TMP3,TMP2,31 ; save sign + lsl TMP2,TMP2,1 + blt .Lret0 + sub TMP1,TMP2,1 ; rounding compensation, avoid overflow + movgte TMP2,TMP1 + lsr TMP2,TMP2,24 + lsl r1,r1,TMP2 + lsl TMP0,TMP0,TMP2 + sub TMP1,r0,r1 + movgteu r0,TMP1 + movgteu TMP4,TMP0 + lsl TMP5,TMP0,1 + sub TMP1,r0,r1 + movgteu r0,TMP1 + movgteu TMP4,TMP5 + sub TMP1,r1,1 + mov r1,%low(.L0step) + movt r1,%high(.L0step) + lsl TMP2,TMP2,3 + sub r1,r1,TMP2 + jr r1 + .rep 30 + lsl r0,r0,1 + sub.l r1,r0,TMP1 + movgteu r0,r1 + .endr +.L0step:sub r1,TMP0,1 ; mask result bits from steps ... + and r0,r0,r1 + orr r0,r0,TMP4 ; ... and combine with first bit. + eor r0,r0,TMP3 ; restore sign + sub r0,r0,TMP3 +.Lret_r0:rts +.Lret0: mov r0,0 + rts + ENDFUNC(__divsi3) diff --git a/gcc-4.9/libgcc/config/epiphany/divsi3.S b/gcc-4.9/libgcc/config/epiphany/divsi3.S new file mode 100644 index 000000000..1825aa83d --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/divsi3.S @@ -0,0 +1,92 @@ +/* Signed 32 bit division optimized for Epiphany. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +#include "epiphany-asm.h" + + FSTAB (__divsi3,T_INT) + .global SYM(__divsi3) + .balign 4 + HIDDEN_FUNC(__divsi3) +SYM(__divsi3): + mov r12,0 + sub r2,r12,r0 + movlt r2,r0 + sub r3,r12,r1 + movlt r3,r1 + sub r19,r2,r3 + bltu .Lret0 + movt r12,0x4000 + orr r16,r2,r12 + orr r18,r3,r12 + fsub r16,r16,r12 + fsub r18,r18,r12 + movt r12,0x4b80 + lsr r19,r3,23 + lsr r17,r2,23 + movt r17,0x4b80 + fsub r17,r17,r12 + movt r19,0x4b80 + fsub r19,r19,r12 + mov r12,%low(.L0step) + movt r12,%high(.L0step) + mov r20,0 + mov r21,1 + movne r16,r17 + lsr r17,r3,23 + movne r18,r19 + eor r1,r1,r0 ; save sign + asr r19,r1,31 + lsr r1,r16,23 + lsr r0,r18,23 + sub r1,r1,r0 ; calculate bit number difference. + lsl r3,r3,r1 + lsr r16,r3,1 + lsl r0,r21,r1 + lsl r1,r1,3 + sub r12,r12,r1 + sub r3,r2,r3 + movgteu r2,r3 + movgteu r20,r0 + lsr r0,r0,1 + add r17,r0,r20 + sub r3,r2,r16 + movgteu r2,r3 + movgteu r20,r17 + sub r16,r16,1 + jr r12 + .rep 30 + lsl r2,r2,1 + sub r3,r2,r16 + movgteu r2,r3 + .endr + sub r0,r0,1 ; mask result bits from steps ... + and r0,r0,r2 + orr r20,r0,r20 ; ... and combine with first bit. +.L0step:eor r0,r20,r19 ; restore sign + sub r0,r0,r19 + rts +.Lret0: mov r0,0 + rts + ENDFUNC(__divsi3) diff --git a/gcc-4.9/libgcc/config/epiphany/divsi3.c b/gcc-4.9/libgcc/config/epiphany/divsi3.c new file mode 100644 index 000000000..fd85be19c --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/divsi3.c @@ -0,0 +1,120 @@ +/* Generic signed 32 bit division implementation. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +typedef union { unsigned int i; float f; } fu; + +/* Although the semantics of the function ask for signed / unsigned inputs, + for the actual implementation we use unsigned numbers. */ +unsigned int __divsi3 (unsigned int a, unsigned int b); + +unsigned int +__divsi3 (unsigned int a, unsigned int b) +{ + unsigned int sign = (int) (a ^ b) >> 31; + unsigned int d, t, s0, s1, s2, r0, r1; + fu u0, u1, u2, u1b, u2b; + + a = abs (a); + b = abs (b); + + if (b > a) + return 0; + + /* Compute difference in number of bits in S0. */ + u0.i = 0x40000000; + u1b.i = u2b.i = u0.i; + u1.i = a; + u2.i = b; + u1.i = a | u0.i; + t = 0x4b800000 | ((a >> 23) & 0xffff); + if (a >> 23) + { + u1.i = t; + u1b.i = 0x4b800000; + } + u2.i = b | u0.i; + t = 0x4b800000 | ((b >> 23) & 0xffff); + if (b >> 23) + { + u2.i = t; + u2b.i = 0x4b800000; + } + u1.f = u1.f - u1b.f; + u2.f = u2.f - u2b.f; + s1 = u1.i >> 23; + s2 = u2.i >> 23; + s0 = s1 - s2; + + b <<= s0; + d = b - 1; + + r0 = 1 << s0; + r1 = 0; + t = a - b; + if (t <= a) + { + a = t; + r1 = r0; + } + +#define STEP(n) case n: a += a; t = a - d; if (t <= a) a = t; + switch (s0) + { + STEP (31) + STEP (30) + STEP (29) + STEP (28) + STEP (27) + STEP (26) + STEP (25) + STEP (24) + STEP (23) + STEP (22) + STEP (21) + STEP (20) + STEP (19) + STEP (18) + STEP (17) + STEP (16) + STEP (15) + STEP (14) + STEP (13) + STEP (12) + STEP (11) + STEP (10) + STEP (9) + STEP (8) + STEP (7) + STEP (6) + STEP (5) + STEP (4) + STEP (3) + STEP (2) + STEP (1) + case 0: ; + } + r0 = r1 | (r0-1 & a); + return (r0 ^ sign) - sign; +} diff --git a/gcc-4.9/libgcc/config/epiphany/epiphany-asm.h b/gcc-4.9/libgcc/config/epiphany/epiphany-asm.h new file mode 100644 index 000000000..1ea8bbae3 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/epiphany-asm.h @@ -0,0 +1,52 @@ +/* Copyright (C) 1995-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, 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/>. */ + +/* ANSI concatenation macros. */ + +#define CONCAT1(a, b) CONCAT2(a, b) +#define CONCAT2(a, b) a ## b +#define STRINGIFY2(a, b) STRINGIFY(a##b) +#define STRINGIFY(a) #a + +/* Use the right prefix for global labels. */ + +#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x) + +#define FSTAB(X,T) .stabs STRINGIFY2(X##:F,T),36,0,__LINE__,SYM(X) +#define FUNC(X) .type SYM(X),@function +#define HIDDEN_FUNC(X) FUNC(X)` .hidden SYM(X) +#define ENDFUNC0(X) CONCAT1(.Lfe_,X): .size X,CONCAT1(.Lfe_,X)-X +#define ENDFUNC(X) ENDFUNC0(SYM(X)) + +#define TMP0 r12 +#define TMP1 r16 +#define TMP2 r17 +#define TMP3 r18 +#define TMP4 r19 +#define TMP5 r20 + +#define T_INT (0,1) + .stabs "int:t(0,1)=r(0,1);-2147483648;2147483647;",128,0,1,0 +#define T_UINT (0,2) + .stabs "unsigned int:t(0,2)=r(0,2);0;037777777777;",128,0,1,0 diff --git a/gcc-4.9/libgcc/config/epiphany/ieee-754/eqsf2.S b/gcc-4.9/libgcc/config/epiphany/ieee-754/eqsf2.S new file mode 100644 index 000000000..63e965ca4 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/ieee-754/eqsf2.S @@ -0,0 +1,50 @@ +/* Copyright (C) 2008-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, 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/>. */ + +#include "../epiphany-asm.h" + + /* Assumption: NaNs have all bits 10..30 and one of bit 0..9 set. */ + + FSTAB (__eqsf2,T_INT) + .global SYM(__eqsf2) + .balign 4 + HIDDEN_FUNC(__eqsf2) +SYM(__eqsf2): + sub TMP0,r0,r1 + beq .Lno_bdiff + orr TMP0,r0,r1 + add TMP0,TMP0,TMP0 + rts +.Lno_bdiff: +#ifndef FLOAT_FORMAT_MOTOROLA + mov TMP0,0xffff + movt TMP0,0x7f + add TMP0,TMP0,r0 +#else + add TMP0,r0,0x3ff +#endif + eor TMP0,TMP0,r0 + lsr TMP0,TMP0,31 + rts + ENDFUNC(__eqsf2) diff --git a/gcc-4.9/libgcc/config/epiphany/ieee-754/fast_div.S b/gcc-4.9/libgcc/config/epiphany/ieee-754/fast_div.S new file mode 100644 index 000000000..06b850609 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/ieee-754/fast_div.S @@ -0,0 +1,124 @@ +/* Copyright (C) 2011-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, 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/>. */ + +#include "../epiphany-asm.h" + +.section _fast_div_text,"a",@progbits; + .balign 8; +_fast_div_table: +.word 0x007fffff// mantissa mask +.word 0x40257ebb// hold constant a = 2.58586 + +.word 0x3f000000// hold constant 126 shifted to bits [30:23] +.word 0xc0ba2e88// hold constant b = -5.81818 + +.word 0x4087c1e8// hold constant c = 4.24242 +.word 0x40000000// to hold constant 2 for Newton-Raphson iterations + + .global SYM(__fast_recipsf2) + FUNC(__fast_recipsf2) +SYM(__fast_recipsf2): + +//################### +//# input operands: +//################### +// Divisor +//R0 +// Function address (used with negative offsets to read _fast_div_table) +//R1 +/* Scratch registers: two single (TMP0/TMP5) and two pairs. */ +#define P0L TMP1 +#define P0H TMP2 +#define P1L TMP3 +#define P1H TMP4 + +//######################################### +//# Constants to be used in the algorithm +//######################################### +ldrd P0L , [ R1 , -3 ] + +ldrd P1L , [ R1 , -2 ] + + + +//############################################################################# +//# The Algorithm +//# +//# Operation: C=A/B +//# stage 1 - find the reciprocal 1/B according to the following scheme: +//# B = (2^E)*m (1<m<2, E=e-127) +//# 1/B = 1/((2^E)*m) = 1/((2^(E+1))*m1) (0.5<m1<1) +//# = (2^-(E+1))*(1/m1) = (2^E1)*(1/m1) +//# +//# Now we can find the new exponent: +//# e1 = E1+127 = -E-1+127 = -e+127-1+127 = 253-e ** +//# 1/m1 alreadt has the exponent 127, so we have to add 126-e. +//# the exponent might underflow, which we can detect as a sign change. +//# Since the architeture uses flush-to-zero for subnormals, we can +//# give the result 0. then. +//# +//# The 1/m1 term with 0.5<m1<1 is approximated with the Chebyshev polynomial +//# 1/m1 = 2.58586*(m1^2) - 5.81818*m1 + 4.24242 +//# +//# Next step is to use two iterations of Newton-Raphson algorithm to complete +//# the reciprocal calculation. +//# +//# Final result is achieved by multiplying A with 1/B +//############################################################################# + + + +// R0 exponent and sign "replacement" into TMP0 +AND TMP0,R0,P0L ; +ORR TMP0,TMP0,P1L +SUB TMP5,R0,TMP0 // R0 sign/exponent extraction into TMP5 +// Calculate new mantissa +FMADD P1H,TMP0,P0H ; + // Calculate new exponent offset 126 - "old exponent" + SUB P1L,P1L,TMP5 + ldrd P0L , [ R1 , -1 ] +FMADD P0L,TMP0,P1H ; + eor P1H,r0,P1L // check for overflow (N-BIT). + blt .Lret_0 +// P0L exponent and sign "replacement" +sub P0L,P0L,TMP5 + +// Newton-Raphson iteration #1 +MOV TMP0,P0H ; +FMSUB P0H,R0,P0L ; +FMUL P0L,P0H,P0L ; +// Newton-Raphson iteration #2 +FMSUB TMP0,R0,P0L ; +FMUL R0,TMP0,P0L ; +jr lr +.Lret_0:ldrd P0L , [ R1 , -3 ] + lsr TMP0,r0,31 ; extract sign + lsl TMP0,TMP0,31 + add P0L,P0L,r0 ; check for NaN input + eor P0L,P0L,r0 + movgte r0,TMP0 + jr lr +// Quotient calculation is expected by the caller: FMUL quotient,divident,R0 + ; + ENDFUNC(__fast_recipsf2) diff --git a/gcc-4.9/libgcc/config/epiphany/ieee-754/gtesf2.S b/gcc-4.9/libgcc/config/epiphany/ieee-754/gtesf2.S new file mode 100644 index 000000000..a1566c18b --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/ieee-754/gtesf2.S @@ -0,0 +1,66 @@ +/* Copyright (C) 2008-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, 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/>. */ + +#include "../epiphany-asm.h" + + /* Assumptions: NaNs have all bits 10..30 and one of bit 0..9 set. + after sub: AC = ~Borrow. + clobber: TMP0 + output: gt / gte indicates greater / greater or equal. */ + + FSTAB (__gtesf2,T_INT) + .global SYM(__gtesf2) + .balign 4 + HIDDEN_FUNC(__gtesf2) +SYM(__gtesf2): +#ifndef FLOAT_FORMAT_MOTOROLA + mov TMP0,0xffff + movt TMP0,0x7f + add TMP0,TMP0,r0 + eor TMP0,TMP0,r0 + blt .Lret + mov TMP0,0xffff + movt TMP0,0x7f + add TMP0,TMP0,r1 +#else + add TMP0,r0,0x3ff; check for r0 NaN + eor TMP0,TMP0,r0 + blt .Lret + add TMP0,r1,0x3ff; check for r1 NaN +#endif + eor TMP0,TMP0,r1 + blt .Lret + and TMP0,r0,r1 + blt .Lneg + orr TMP0,r0,r1 + lsl TMP0,TMP0,1 + beq .Lret + sub TMP0,r0,r1 +.Lret: + rts + .balign 4 +.Lneg: + sub TMP0,r1,r0 + rts + ENDFUNC(__gtesf2) diff --git a/gcc-4.9/libgcc/config/epiphany/ieee-754/ordsf2.S b/gcc-4.9/libgcc/config/epiphany/ieee-754/ordsf2.S new file mode 100644 index 000000000..c0cfaec57 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/ieee-754/ordsf2.S @@ -0,0 +1,50 @@ +/* Copyright (C) 2008-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, 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/>. */ + +#include "../epiphany-asm.h" + + FSTAB (__ordsf2,T_INT) + .global SYM(__ordsf2) + .balign 8,,2 + HIDDEN_FUNC(__ordsf2) +SYM(__ordsf2): +#ifndef FLOAT_FORMAT_MOTOROLA + mov TMP0,0 + movt TMP0,0xff00 + lsl TMP1,r0,1 + sub TMP1,TMP1,TMP0 + bgtu .Lret + lsl TMP1,r1,1 + sub TMP1,TMP1,TMP0 +.Lret: rts /* ordered: lteu */ +#else + /* Assumption: NaNs have all bits 9..30 and one of bit 0..8 set. */ + lsl TMP0,r0,1 + add TMP0,TMP0,0x3fe + bgteu .Lret + lsl TMP0,r1,1 + add TMP0,TMP0,0x3fe +.Lret: rts /* ordered: ltu */ +#endif + ENDFUNC(__ordsf2) diff --git a/gcc-4.9/libgcc/config/epiphany/ieee-754/uneqsf2.S b/gcc-4.9/libgcc/config/epiphany/ieee-754/uneqsf2.S new file mode 100644 index 000000000..31d9bf3fb --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/ieee-754/uneqsf2.S @@ -0,0 +1,45 @@ +/* Copyright (C) 2008-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, 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/>. */ + +#include "../epiphany-asm.h" + + FSTAB (__uneqsf2,T_INT) + .global SYM(__uneqsf2) + .balign 8,,2 + HIDDEN_FUNC(__uneqsf2) +SYM(__uneqsf2): + sub TMP0,r0,r1 + beq .Lret + orr TMP0,r0,r1 + add TMP0,TMP0,TMP0 + beq .Lret + mov TMP0,1 + movt TMP0,0xff00 + lsl TMP1,r0,1 + sub TMP1,TMP0,TMP1 + blteu .Lret + lsl TMP1,r1,1 + sub TMP1,TMP0,TMP1 +.Lret: rts /* uneq: lteu */ + ENDFUNC(__uneqsf2) diff --git a/gcc-4.9/libgcc/config/epiphany/modsi3-float.S b/gcc-4.9/libgcc/config/epiphany/modsi3-float.S new file mode 100644 index 000000000..76590f082 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/modsi3-float.S @@ -0,0 +1,65 @@ +/* Unsigned 32 bit division optimized for Epiphany. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +#include "epiphany-asm.h" + + FSTAB (__modsi3,T_UINT) + .global SYM(__modsi3) + .balign 4 + HIDDEN_FUNC(__modsi3) +SYM(__modsi3): + asr TMP3,r0,31 ; save sign + float TMP0,r0 + float TMP1,r1 + mov r2,0 + sub TMP4,r2,r0 + beq .Lret_r0 + movgt r0,TMP4 + sub TMP2,r2,r1 + movlte TMP2,r1 + sub r2,TMP0,TMP1 + lsl r2,r2,1 + blte .L0step + asr TMP4,r2,24 + lsl r2,TMP4,3 + mov TMP4,%low(.L0step) + movt TMP4,%high(.L0step) + sub r2,TMP4,r2 + jr r2 +#define STEP(n) lsl.l r2,TMP2,n` sub r2,r0,r2` movgteu r0,r2 + .balign 8,,2 + STEP(31)` STEP(30)` STEP(29)` STEP(28)` + STEP(27)` STEP(26)` STEP(25)` STEP(24)` + STEP(23)` STEP(22)` STEP(21)` STEP(20)` + STEP(19)` STEP(18)` STEP(17)` STEP(16)` + STEP(15)` STEP(14)` STEP(13)` STEP(12)` + STEP(11)` STEP(10)` STEP(9)` STEP(8)` + STEP(7)` STEP(6)` STEP(5)` STEP(4)` STEP(3)` STEP(2)` STEP(1) +.L0step:STEP(0) + eor r0,r0,TMP3 ; restore sign + sub r0,r0,TMP3 +.Lret_r0: + rts + ENDFUNC(__modsi3) diff --git a/gcc-4.9/libgcc/config/epiphany/modsi3.S b/gcc-4.9/libgcc/config/epiphany/modsi3.S new file mode 100644 index 000000000..68b1a2f75 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/modsi3.S @@ -0,0 +1,77 @@ +/* Signed 32 bit modulo optimized for Epiphany. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +#include "epiphany-asm.h" + + FSTAB (__modsi3,T_INT) + .global SYM(__modsi3) + .balign 4 + HIDDEN_FUNC(__modsi3) +SYM(__modsi3): + asr r17,r0,31 ; save sign + mov r2,0 + sub r3,r2,r0 + movgt r0,r3 + sub r3,r2,r1 + movgt r1,r3 + movt r2,0xa000 ; 0xa0000000 + orr r3,r2,r0 + lsr r15,r0,16 + movt r15,0xa800 + movne r3,r15 + lsr r16,r2,2 ; 0x28000000 + and r15,r3,r16 + fadd r12,r3,r15 + orr r3,r2,r1 + lsr r2,r1,16 + movt r2,0xa800 + movne r3,r2 + and r2,r16,r3 + fadd r3,r3,r2 + sub r2,r0,r1 + bltu .Lret_a + lsr r12,r12,23 + mov r2,%low(.L0step) + movt r2,%high(.L0step) + lsr r3,r3,23 + sub r3,r12,r3 ; calculate bit number difference. + lsl r3,r3,3 + sub r2,r2,r3 + jr r2 +/* lsl_l r2,r1,n` sub r2,r0,r2` movgteu r0,r2 */ +#define STEP(n) .long 0x0006441f | (n) << 5` sub r2,r0,r2` movgteu r0,r2 + .balign 8,,2 + STEP(31)` STEP(30)` STEP(29)` STEP(28)` + STEP(27)` STEP(26)` STEP(25)` STEP(24)` + STEP(23)` STEP(22)` STEP(21)` STEP(20)` + STEP(19)` STEP(18)` STEP(17)` STEP(16)` + STEP(15)` STEP(14)` STEP(13)` STEP(12)` + STEP(11)` STEP(10)` STEP(9)` STEP(8)` + STEP(7)` STEP(6)` STEP(5)` STEP(4)` STEP(3)` STEP(2)` STEP(1) +.L0step:STEP(0) +.Lret_a:eor r0,r0,r17 ; restore sign + sub r0,r0,r17 + rts + ENDFUNC(__modsi3) diff --git a/gcc-4.9/libgcc/config/epiphany/modsi3.c b/gcc-4.9/libgcc/config/epiphany/modsi3.c new file mode 100644 index 000000000..229819b9e --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/modsi3.c @@ -0,0 +1,106 @@ +/* Generic signed 32 bit modulo implementation. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +typedef union { unsigned int i; float f; } fu; + +unsigned int __modsi3 (unsigned int a, unsigned int b); + +unsigned int +__modsi3 (unsigned int a, unsigned int b) +{ + unsigned int sign = (int) a >> 31; + unsigned int d, t, s0, s1, s2, r0, r1; + fu u0, u1, u2, u1b, u2b; + + a = abs (a); + b = abs (b); + + if (b > a) + goto ret_a; + + /* Compute difference in number of bits in S0. */ + u0.i = 0x40000000; + u1b.i = u2b.i = u0.i; + u1.i = a; + u2.i = b; + u1.i = a | u0.i; + t = 0x4b800000 | ((a >> 23) & 0xffff); + if (a >> 23) + { + u1.i = t; + u1b.i = 0x4b800000; + } + u2.i = b | u0.i; + t = 0x4b800000 | ((b >> 23) & 0xffff); + if (b >> 23) + { + u2.i = t; + u2b.i = 0x4b800000; + } + u1.f = u1.f - u1b.f; + u2.f = u2.f - u2b.f; + s1 = u1.i >> 23; + s2 = u2.i >> 23; + s0 = s1 - s2; + +#define STEP(n) case n: d = b << n; t = a - d; if (t <= a) a = t; + switch (s0) + { + STEP (31) + STEP (30) + STEP (29) + STEP (28) + STEP (27) + STEP (26) + STEP (25) + STEP (24) + STEP (23) + STEP (22) + STEP (21) + STEP (20) + STEP (19) + STEP (18) + STEP (17) + STEP (16) + STEP (15) + STEP (14) + STEP (13) + STEP (12) + STEP (11) + STEP (10) + STEP (9) + STEP (8) + STEP (7) + STEP (6) + STEP (5) + STEP (4) + STEP (3) + STEP (2) + STEP (1) + STEP (0) + } + ret_a: + return (a ^ sign) - sign; +} diff --git a/gcc-4.9/libgcc/config/epiphany/mulsi3.c b/gcc-4.9/libgcc/config/epiphany/mulsi3.c new file mode 100644 index 000000000..b8f448611 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/mulsi3.c @@ -0,0 +1,39 @@ +/* Generic 32 bit multiply. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +unsigned int +__mulsi3 (unsigned int a, unsigned int b) +{ + unsigned int r = 0; + + while (a) + { + if (a & 1) + r += b; + a >>= 1; + b <<= 1; + } + return r; +} diff --git a/gcc-4.9/libgcc/config/epiphany/t-custom-eqsf b/gcc-4.9/libgcc/config/epiphany/t-custom-eqsf new file mode 100644 index 000000000..3b5a54ace --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/t-custom-eqsf @@ -0,0 +1 @@ +FPBIT_FUNCS := $(filter-out _eq_sf,$(FPBIT_FUNCS)) diff --git a/gcc-4.9/libgcc/config/epiphany/t-epiphany b/gcc-4.9/libgcc/config/epiphany/t-epiphany new file mode 100644 index 000000000..741cc796e --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/t-epiphany @@ -0,0 +1,34 @@ +# Copyright (C) 1997-2014 Free Software Foundation, Inc. +# Contributed by Embecosm on behalf of Adapteva, 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. +# +# You should have received a copy of the GNU General Public License +# along with GCC; see the file COPYING3. If not see +# <http://www.gnu.org/licenses/>. + +LIB2ADD_ST = $(srcdir)/config/epiphany/modsi3-float.S \ + $(srcdir)/config/epiphany/divsi3-float.S \ + $(srcdir)/config/epiphany/udivsi3-float.S \ + $(srcdir)/config/epiphany/umodsi3-float.S \ + $(srcdir)/config/epiphany/ieee-754/eqsf2.S \ + $(srcdir)/config/epiphany/ieee-754/gtesf2.S \ + $(srcdir)/config/epiphany/ieee-754/ordsf2.S \ + $(srcdir)/config/epiphany/ieee-754/uneqsf2.S \ + $(srcdir)/config/epiphany/ieee-754/fast_div.S + +# .init/.fini section routines + +crtint.o crtrunc.o crtm1reg-r43.o crtm1reg-r63.o : \ + %.o: $(srcdir)/config/epiphany/%.S $(GCC_PASSES) $(CONFIG_H) + $(crt_compile) -c -x assembler-with-cpp $< diff --git a/gcc-4.9/libgcc/config/epiphany/udivsi3-float.S b/gcc-4.9/libgcc/config/epiphany/udivsi3-float.S new file mode 100644 index 000000000..f1e2d7b17 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/udivsi3-float.S @@ -0,0 +1,83 @@ +/* Unsigned 32 bit division optimized for Epiphany. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +#include "epiphany-asm.h" + + FSTAB (__udivsi3,T_UINT) + .global SYM(__udivsi3) + .balign 4 + HIDDEN_FUNC(__udivsi3) +SYM(__udivsi3): + sub TMP0,r0,r1 + bltu .Lret0 + float TMP2,r0 + mov TMP1,%low(0xb0800000) ; ??? this would be faster with small data + float TMP3,r1 + movt TMP1,%high(0xb0800000) + asr TMP0,r0,8 + sub TMP0,TMP0,TMP1 + movt TMP1,%high(0x00810000) + movgteu TMP2,TMP0 + bblt .Lret1 + sub TMP2,TMP2,TMP1 + sub TMP2,TMP2,TMP3 + mov TMP3,0 + movltu TMP2,TMP3 + lsr TMP2,TMP2,23 + lsl r1,r1,TMP2 + mov TMP0,1 + lsl TMP0,TMP0,TMP2 + sub r0,r0,r1 + bltu .Ladd_back + add TMP3,TMP3,TMP0 + sub r0,r0,r1 + bltu .Ladd_back +.Lsub_loop:; More than two iterations are rare, so it makes sense to leave + ; this label here to reduce average branch penalties. + add TMP3,TMP3,TMP0 + sub r0,r0,r1 + bgteu .Lsub_loop +.Ladd_back: + add r0,r0,r1 + sub TMP1,r1,1 + mov r1,%low(.L0step) + movt r1,%high(.L0step) + lsl TMP2,TMP2,3 + sub r1,r1,TMP2 + jr r1 + .rep 30 + lsl r0,r0,1 + sub.l r1,r0,TMP1 + movgteu r0,r1 + .endr +.L0step:sub r1,TMP0,1 ; mask result bits from steps ... + and r0,r0,r1 + orr r0,r0,TMP3 ; ... and combine with first bits. + rts +.Lret0: mov r0,0 + rts +.Lret1: mov r0,1 + rts + ENDFUNC(__udivsi3) diff --git a/gcc-4.9/libgcc/config/epiphany/udivsi3-float.c b/gcc-4.9/libgcc/config/epiphany/udivsi3-float.c new file mode 100644 index 000000000..9d1b25251 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/udivsi3-float.c @@ -0,0 +1,125 @@ +/* Generic unsigned 32 bit division implementation. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +typedef union { unsigned int i; float f; } fu; + +unsigned int __udivsi3 (unsigned int a, unsigned int b); + +unsigned int +__udivsi3 (unsigned int a, unsigned int b) +{ + unsigned int d, t, s0, s1, s2, r0, r1; + fu u0, u1, u2, u1b, u2b; + + if (b > a) + return 0; + if ((int) b < 0) + return 1; + + /* Assuming B is nonzero, compute S0 such that 0 <= S0, + (B << S0+1) does not overflow, + A < 4.01 * (B << S0), with S0 chosen as small as possible + without taking to much time calculating. */ +#ifdef CONVERT_UNSIGNED + u0.f = a; + u1.f = b; +#else /* !CONVERT_UNSIGNED */ + u0.f = (int) a; + u1.f = (int) b; +#ifdef CONCISE + if (a < 0) + u0.i = (a >> 8) - 0x00800000 + 0x3f800000 + (31 << 23); +#else /* To use flag seting / cmove, this can be written as: */ + { + unsigned c = 0xff800000 - 0x4f000000; + t = (int)a >> 8; + if (t >= c) + u0.i = (t - c); + } +#endif +#endif /* !CONVERT_UNSIGNED */ + s0 = u0.i + 1 /* Compensate for rounding errors. */ + - 0x00800000 /* adjust by one */ ; + s0 = s0 - u1.i; + s0 = (int)s0 >= 0 ? s0 : 0; + s0 >>= 23; + + b <<= s0; + r1 = 0; + + r0 = 1 << s0; + a = ((t=a) - b); + if (a <= t) + { + r1 += r0; + a = ((t=a) - b); + if (a <= t) + do { + r1 += r0; + a = ((t=a) - b); + } while (a <= t); + } + a += b; + d = b - 1; + +#define STEP(n) case n: a += a; t = a - d; if (t <= a) a = t; + switch (s0) + { + STEP (31) + STEP (30) + STEP (29) + STEP (28) + STEP (27) + STEP (26) + STEP (25) + STEP (24) + STEP (23) + STEP (22) + STEP (21) + STEP (20) + STEP (19) + STEP (18) + STEP (17) + STEP (16) + STEP (15) + STEP (14) + STEP (13) + STEP (12) + STEP (11) + STEP (10) + STEP (9) + STEP (8) + STEP (7) + STEP (6) + STEP (5) + STEP (4) + STEP (3) + STEP (2) + STEP (1) + case 0: ; + } + r0 = r1 | (r0-1 & a); + return r0; +} diff --git a/gcc-4.9/libgcc/config/epiphany/udivsi3.S b/gcc-4.9/libgcc/config/epiphany/udivsi3.S new file mode 100644 index 000000000..3c994aa41 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/udivsi3.S @@ -0,0 +1,85 @@ +/* Unsigned 32 bit division optimized for Epiphany. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +#include "epiphany-asm.h" + + FSTAB (__udivsi3,T_UINT) + .global SYM(__udivsi3) + .balign 4 + HIDDEN_FUNC(__udivsi3) +SYM(__udivsi3): + sub r3,r0,r1 + bltu .Lret0 + mov r3,0x95 + lsl r12,r3,23 ; 0x4a800000 + lsl r3,r3,30 ; 0x40000000 + orr r16,r0,r3 + orr r2,r1,r3 + fsub r16,r16,r3 + fsub r2,r2,r3 + lsr r3,r1,21 + lsr r17,r0,21 + movt r17,0x4a80 + fsub r17,r17,r12 + movt r3,0x4a80 + fsub r3,r3,r12 + mov r12,%low(.L0step) + movt r12,%high(.L0step) + mov r21,1 + movne r16,r17 + lsr r17,r1,21 + movne r2,r3 + lsr r3,r16,23 ; must mask lower bits of r2 in case op0 was .. + lsr r2,r2,23 ; .. shifted and op1 was not. + sub r3,r3,r2 ; calculate bit number difference. + lsl r1,r1,r3 + lsr r16,r1,1 + lsl r2,r21,r3 + lsl r3,r3,3 + sub r12,r12,r3 + sub r3,r0,r1 + movltu r3,r0 + mov r0,0 + movgteu r0,r2 + lsr r2,r2,1 + add r17,r2,r0 + sub r1,r3,r16 + movgteu r3,r1 + movgteu r0,r17 + sub r16,r16,1 + jr r12 + .rep 30 + lsl r3,r3,1 + sub r1,r3,r16 + movgteu r3,r1 + .endr + sub r2,r2,1 ; mask result bits from steps ... + and r3,r3,r2 + orr r0,r0,r3 ; ... and combine with first bits. + nop +.L0step:rts +.Lret0: mov r0,0 + rts + ENDFUNC(__udivsi3) diff --git a/gcc-4.9/libgcc/config/epiphany/udivsi3.c b/gcc-4.9/libgcc/config/epiphany/udivsi3.c new file mode 100644 index 000000000..bdc7c9d9b --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/udivsi3.c @@ -0,0 +1,114 @@ +/* Generic unsigned 32 bit division implementation. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +typedef union { unsigned int i; float f; } fu; + +unsigned int __udivsi3 (unsigned int a, unsigned int b); + +unsigned int +__udivsi3 (unsigned int a, unsigned int b) +{ + unsigned int d, t, s0, s1, s2, r0, r1; + fu u0, u1, u2, u1b, u2b; + + if (b > a) + return 0; + + /* Compute difference in number of bits in S0. */ + u0.i = 0x40000000; + u1b.i = u2b.i = u0.i; + u1.i = a; + u2.i = b; + u1.i = a | u0.i; + t = 0x4b800000 | ((a >> 23) & 0xffff); + if (a >> 23) + { + u1.i = t; + u1b.i = 0x4b800000; + } + u2.i = b | u0.i; + t = 0x4b800000 | ((b >> 23) & 0xffff); + if (b >> 23) + { + u2.i = t; + u2b.i = 0x4b800000; + } + u1.f = u1.f - u1b.f; + u2.f = u2.f - u2b.f; + s1 = u1.i >> 23; + s2 = u2.i >> 23; + s0 = s1 - s2; + + b <<= s0; + d = b - 1; + + r0 = 1 << s0; + r1 = 0; + t = a - b; + if (t <= a) + { + a = t; + r1 = r0; + } + +#define STEP(n) case n: a += a; t = a - d; if (t <= a) a = t; + switch (s0) + { + STEP (31) + STEP (30) + STEP (29) + STEP (28) + STEP (27) + STEP (26) + STEP (25) + STEP (24) + STEP (23) + STEP (22) + STEP (21) + STEP (20) + STEP (19) + STEP (18) + STEP (17) + STEP (16) + STEP (15) + STEP (14) + STEP (13) + STEP (12) + STEP (11) + STEP (10) + STEP (9) + STEP (8) + STEP (7) + STEP (6) + STEP (5) + STEP (4) + STEP (3) + STEP (2) + STEP (1) + case 0: ; + } + r0 = r1 | (r0-1 & a); + return r0; +} diff --git a/gcc-4.9/libgcc/config/epiphany/umodsi3-float.S b/gcc-4.9/libgcc/config/epiphany/umodsi3-float.S new file mode 100644 index 000000000..029ce2c5e --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/umodsi3-float.S @@ -0,0 +1,63 @@ +/* Unsigned 32 bit division optimized for Epiphany. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +#include "epiphany-asm.h" + +/* Because we handle a divident with bit 31 set with truncating integer + arithmetic, there is no rounding-related overflow. */ + FSTAB (__umodsi3,T_UINT) + .global SYM(__umodsi3) + .balign 4 + HIDDEN_FUNC(__umodsi3) +SYM(__umodsi3): + float r2,r0 + mov TMP1,%low(0xb0800000) ; ??? this would be faster with small data + float TMP2,r1 + movt TMP1,%high(0xb0800000) + asr TMP0,r0,8 + sub TMP0,TMP0,TMP1 + mov TMP1,%low(.L0step) + movgteu r2,TMP0 + sub r2,r2,TMP2 + blteu .L0step + asr r2,r2,23 + movt TMP1,%high(.L0step) + lsl TMP2,r2,3 + lsl r2,r1,r2` sub r2,r0,r2` movgteu r0,r2 ; STEP(r2) + sub r2,TMP1,TMP2 + jr r2 +#define STEP(n) lsl.l r2,r1,n` sub r2,r0,r2` movgteu r0,r2 + .balign 8,,2 + STEP(31)` STEP(30)` STEP(29)` STEP(28)` + STEP(27)` STEP(26)` STEP(25)` STEP(24)` + STEP(23)` STEP(22)` STEP(21)` STEP(20)` + STEP(19)` STEP(18)` STEP(17)` STEP(16)` + STEP(15)` STEP(14)` STEP(13)` STEP(12)` + STEP(11)` STEP(10)` STEP(9)` STEP(8)` + STEP(7)` STEP(6)` STEP(5)` STEP(4)` STEP(3)` STEP(2)` STEP(1) +.L0step:STEP(0) +.Lret_r0: + rts + ENDFUNC(__umodsi3) diff --git a/gcc-4.9/libgcc/config/epiphany/umodsi3.S b/gcc-4.9/libgcc/config/epiphany/umodsi3.S new file mode 100644 index 000000000..65c824bc7 --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/umodsi3.S @@ -0,0 +1,70 @@ +/* Unsigned 32 bit modulo optimized for Epiphany. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +#include "epiphany-asm.h" + + FSTAB (__umodsi3,T_UINT) + .global SYM(__umodsi3) + .balign 4 + HIDDEN_FUNC(__umodsi3) +SYM(__umodsi3): + mov r2,5 + lsl r2,r2,29 ; 0xa0000000 + orr r3,r2,r0 + lsr r15,r0,16 + movt r15,0xa800 + movne r3,r15 + lsr r16,r2,2 ; 0x28000000 + and r15,r3,r16 + fadd r12,r3,r15 + orr r3,r2,r1 + lsr r2,r1,16 + movt r2,0xa800 + movne r3,r2 + and r2,r16,r3 + fadd r3,r3,r2 + sub r2,r0,r1 + bltu .Lret_a + lsr r12,r12,23 + mov r2,%low(.L0step) + movt r2,%high(.L0step) + lsr r3,r3,23 + sub r3,r12,r3 ; calculate bit number difference. + lsl r3,r3,3 + sub r2,r2,r3 + jr r2 +/* lsl_l r2,r1,n` sub r2,r0,r2` movgteu r0,r2 */ +#define STEP(n) .long 0x0006441f | (n) << 5` sub r2,r0,r2` movgteu r0,r2 + .balign 8,,2 + STEP(31)` STEP(30)` STEP(29)` STEP(28)` + STEP(27)` STEP(26)` STEP(25)` STEP(24)` + STEP(23)` STEP(22)` STEP(21)` STEP(20)` + STEP(19)` STEP(18)` STEP(17)` STEP(16)` + STEP(15)` STEP(14)` STEP(13)` STEP(12)` + STEP(11)` STEP(10)` STEP(9)` STEP(8)` + STEP(7)` STEP(6)` STEP(5)` STEP(4)` STEP(3)` STEP(2)` STEP(1) +.L0step:STEP(0) +.Lret_a:rts + ENDFUNC(__umodsi3) diff --git a/gcc-4.9/libgcc/config/epiphany/umodsi3.c b/gcc-4.9/libgcc/config/epiphany/umodsi3.c new file mode 100644 index 000000000..6457382aa --- /dev/null +++ b/gcc-4.9/libgcc/config/epiphany/umodsi3.c @@ -0,0 +1,101 @@ +/* Generic unsigned 32 bit modulo implementation. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + Contributed by Embecosm on behalf of Adapteva, Inc. + +This file is part of GCC. + +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 3, or (at your option) any +later version. + +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. + +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/>. */ + +typedef union { unsigned int i; float f; } fu; + +unsigned int __umodsi3 (unsigned int a, unsigned int b); + +unsigned int +__umodsi3 (unsigned int a, unsigned int b) +{ + unsigned int d, t, s0, s1, s2, r0, r1; + fu u0, u1, u2, u1b, u2b; + + if (b > a) + return a; + + /* Compute difference in number of bits in S0. */ + u0.i = 0x40000000; + u1b.i = u2b.i = u0.i; + u1.i = a; + u2.i = b; + u1.i = a | u0.i; + t = 0x4b800000 | ((a >> 23) & 0xffff); + if (a >> 23) + { + u1.i = t; + u1b.i = 0x4b800000; + } + u2.i = b | u0.i; + t = 0x4b800000 | ((b >> 23) & 0xffff); + if (b >> 23) + { + u2.i = t; + u2b.i = 0x4b800000; + } + u1.f = u1.f - u1b.f; + u2.f = u2.f - u2b.f; + s1 = u1.i >> 23; + s2 = u2.i >> 23; + s0 = s1 - s2; + +#define STEP(n) case n: d = b << n; t = a - d; if (t <= a) a = t; + switch (s0) + { + STEP (31) + STEP (30) + STEP (29) + STEP (28) + STEP (27) + STEP (26) + STEP (25) + STEP (24) + STEP (23) + STEP (22) + STEP (21) + STEP (20) + STEP (19) + STEP (18) + STEP (17) + STEP (16) + STEP (15) + STEP (14) + STEP (13) + STEP (12) + STEP (11) + STEP (10) + STEP (9) + STEP (8) + STEP (7) + STEP (6) + STEP (5) + STEP (4) + STEP (3) + STEP (2) + STEP (1) + STEP (0) + } + return a; +} |