diff options
Diffstat (limited to 'gcc/config/bfin')
| -rw-r--r-- | gcc/config/bfin/lib1funcs.asm | 211 | ||||
| -rw-r--r-- | gcc/config/bfin/t-bfin | 23 | ||||
| -rw-r--r-- | gcc/config/bfin/t-bfin-elf | 4 | ||||
| -rw-r--r-- | gcc/config/bfin/t-bfin-linux | 4 | ||||
| -rw-r--r-- | gcc/config/bfin/t-bfin-uclinux | 4 |
5 files changed, 0 insertions, 246 deletions
diff --git a/gcc/config/bfin/lib1funcs.asm b/gcc/config/bfin/lib1funcs.asm deleted file mode 100644 index c7bf4f3..0000000 --- a/gcc/config/bfin/lib1funcs.asm +++ /dev/null @@ -1,211 +0,0 @@ -/* libgcc functions for Blackfin. - Copyright (C) 2005, 2009 Free Software Foundation, Inc. - Contributed by Analog Devices. - -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/>. */ - -#ifdef L_divsi3 -.text -.align 2 -.global ___divsi3; -.type ___divsi3, STT_FUNC; - -___divsi3: - [--SP]= RETS; - [--SP] = R7; - - R2 = -R0; - CC = R0 < 0; - IF CC R0 = R2; - R7 = CC; - - R2 = -R1; - CC = R1 < 0; - IF CC R1 = R2; - R2 = CC; - R7 = R7 ^ R2; - - CALL ___udivsi3; - - CC = R7; - R1 = -R0; - IF CC R0 = R1; - - R7 = [SP++]; - RETS = [SP++]; - RTS; -#endif - -#ifdef L_modsi3 -.align 2 -.global ___modsi3; -.type ___modsi3, STT_FUNC; - -___modsi3: - [--SP] = RETS; - [--SP] = R0; - [--SP] = R1; - CALL ___divsi3; - R2 = [SP++]; - R1 = [SP++]; - R2 *= R0; - R0 = R1 - R2; - RETS = [SP++]; - RTS; -#endif - -#ifdef L_udivsi3 -.align 2 -.global ___udivsi3; -.type ___udivsi3, STT_FUNC; - -___udivsi3: - P0 = 32; - LSETUP (0f, 1f) LC0 = P0; - /* upper half of dividend */ - R3 = 0; -0: - /* The first time round in the loop we shift in garbage, but since we - perform 33 shifts, it doesn't matter. */ - R0 = ROT R0 BY 1; - R3 = ROT R3 BY 1; - R2 = R3 - R1; - CC = R3 < R1 (IU); -1: - /* Last instruction of the loop. */ - IF ! CC R3 = R2; - - /* Shift in the last bit. */ - R0 = ROT R0 BY 1; - /* R0 is the result, R3 contains the remainder. */ - R0 = ~ R0; - RTS; -#endif - -#ifdef L_umodsi3 -.align 2 -.global ___umodsi3; -.type ___umodsi3, STT_FUNC; - -___umodsi3: - [--SP] = RETS; - CALL ___udivsi3; - R0 = R3; - RETS = [SP++]; - RTS; -#endif - -#ifdef L_umulsi3_highpart -.align 2 -.global ___umulsi3_highpart; -.type ___umulsi3_highpart, STT_FUNC; - -___umulsi3_highpart: - A1 = R1.L * R0.L (FU); - A1 = A1 >> 16; - A0 = R1.H * R0.H, A1 += R1.L * R0.H (FU); - A1 += R0.L * R1.H (FU); - A1 = A1 >> 16; - A0 += A1; - R0 = A0 (FU); - RTS; -#endif - -#ifdef L_smulsi3_highpart -.align 2 -.global ___smulsi3_highpart; -.type ___smulsi3_highpart, STT_FUNC; - -___smulsi3_highpart: - A1 = R1.L * R0.L (FU); - A1 = A1 >> 16; - A0 = R0.H * R1.H, A1 += R0.H * R1.L (IS,M); - A1 += R1.H * R0.L (IS,M); - A1 = A1 >>> 16; - R0 = (A0 += A1); - RTS; -#endif - -#ifdef L_muldi3 -.align 2 -.global ___muldi3; -.type ___muldi3, STT_FUNC; - -/* - R1:R0 * R3:R2 - = R1.h:R1.l:R0.h:R0.l * R3.h:R3.l:R2.h:R2.l -[X] = (R1.h * R3.h) * 2^96 -[X] + (R1.h * R3.l + R1.l * R3.h) * 2^80 -[X] + (R1.h * R2.h + R1.l * R3.l + R3.h * R0.h) * 2^64 -[T1] + (R1.h * R2.l + R3.h * R0.l + R1.l * R2.h + R3.l * R0.h) * 2^48 -[T2] + (R1.l * R2.l + R3.l * R0.l + R0.h * R2.h) * 2^32 -[T3] + (R0.l * R2.h + R2.l * R0.h) * 2^16 -[T4] + (R0.l * R2.l) - - We can discard the first three lines marked "X" since we produce - only a 64 bit result. So, we need ten 16-bit multiplies. - - Individual mul-acc results: -[E1] = R1.h * R2.l + R3.h * R0.l + R1.l * R2.h + R3.l * R0.h -[E2] = R1.l * R2.l + R3.l * R0.l + R0.h * R2.h -[E3] = R0.l * R2.h + R2.l * R0.h -[E4] = R0.l * R2.l - - We also need to add high parts from lower-level results to higher ones: - E[n]c = E[n] + (E[n+1]c >> 16), where E4c := E4 - - One interesting property is that all parts of the result that depend - on the sign of the multiplication are discarded. Those would be the - multiplications involving R1.h and R3.h, but only the top 16 bit of - the 32 bit result depend on the sign, and since R1.h and R3.h only - occur in E1, the top half of these results is cut off. - So, we can just use FU mode for all of the 16-bit multiplies, and - ignore questions of when to use mixed mode. */ - -___muldi3: - /* [SP] technically is part of the caller's frame, but we can - use it as scratch space. */ - A0 = R2.H * R1.L, A1 = R2.L * R1.H (FU) || R3 = [SP + 12]; /* E1 */ - A0 += R3.H * R0.L, A1 += R3.L * R0.H (FU) || [SP] = R4; /* E1 */ - A0 += A1; /* E1 */ - R4 = A0.w; - A0 = R0.l * R3.l (FU); /* E2 */ - A0 += R2.l * R1.l (FU); /* E2 */ - - A1 = R2.L * R0.L (FU); /* E4 */ - R3 = A1.w; - A1 = A1 >> 16; /* E3c */ - A0 += R2.H * R0.H, A1 += R2.L * R0.H (FU); /* E2, E3c */ - A1 += R0.L * R2.H (FU); /* E3c */ - R0 = A1.w; - A1 = A1 >> 16; /* E2c */ - A0 += A1; /* E2c */ - R1 = A0.w; - - /* low(result) = low(E3c):low(E4) */ - R0 = PACK (R0.l, R3.l); - /* high(result) = E2c + (E1 << 16) */ - R1.h = R1.h + R4.l (NS) || R4 = [SP]; - RTS; - -.size ___muldi3, .-___muldi3 -#endif diff --git a/gcc/config/bfin/t-bfin b/gcc/config/bfin/t-bfin deleted file mode 100644 index bb95ab4..0000000 --- a/gcc/config/bfin/t-bfin +++ /dev/null @@ -1,23 +0,0 @@ -# Copyright (C) 2005, 2007, 2011 Free Software Foundation, 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/>. - -## Target part of the Makefile - -LIB1ASMSRC = bfin/lib1funcs.asm -LIB1ASMFUNCS = _divsi3 _udivsi3 _umodsi3 _modsi3 _muldi3 _umulsi3_highpart -LIB1ASMFUNCS += _smulsi3_highpart diff --git a/gcc/config/bfin/t-bfin-elf b/gcc/config/bfin/t-bfin-elf index fcf76c4..5cbcfee 100644 --- a/gcc/config/bfin/t-bfin-elf +++ b/gcc/config/bfin/t-bfin-elf @@ -18,10 +18,6 @@ ## Target part of the Makefile -LIB1ASMSRC = bfin/lib1funcs.asm -LIB1ASMFUNCS = _divsi3 _udivsi3 _umodsi3 _modsi3 _muldi3 _umulsi3_highpart -LIB1ASMFUNCS += _smulsi3_highpart - TARGET_LIBGCC2_CFLAGS = -fpic MULTILIB_OPTIONS=mcpu=bf532-none diff --git a/gcc/config/bfin/t-bfin-linux b/gcc/config/bfin/t-bfin-linux index a83f9f2..9a1d6a0 100644 --- a/gcc/config/bfin/t-bfin-linux +++ b/gcc/config/bfin/t-bfin-linux @@ -18,10 +18,6 @@ ## Target part of the Makefile -LIB1ASMSRC = bfin/lib1funcs.asm -LIB1ASMFUNCS = _divsi3 _udivsi3 _umodsi3 _modsi3 _muldi3 _umulsi3_highpart -LIB1ASMFUNCS += _smulsi3_highpart - TARGET_LIBGCC2_CFLAGS = -fpic MULTILIB_OPTIONS=mcpu=bf532-none diff --git a/gcc/config/bfin/t-bfin-uclinux b/gcc/config/bfin/t-bfin-uclinux index 1be0796..b9fca80 100644 --- a/gcc/config/bfin/t-bfin-uclinux +++ b/gcc/config/bfin/t-bfin-uclinux @@ -18,10 +18,6 @@ ## Target part of the Makefile -LIB1ASMSRC = bfin/lib1funcs.asm -LIB1ASMFUNCS = _divsi3 _udivsi3 _umodsi3 _modsi3 _muldi3 _umulsi3_highpart -LIB1ASMFUNCS += _smulsi3_highpart - TARGET_LIBGCC2_CFLAGS = -fpic MULTILIB_OPTIONS=mcpu=bf532-none |