diff options
Diffstat (limited to 'arch/frv/lib')
| -rw-r--r-- | arch/frv/lib/Makefile | 8 | ||||
| -rw-r--r-- | arch/frv/lib/__ashldi3.S | 40 | ||||
| -rw-r--r-- | arch/frv/lib/__ashrdi3.S | 41 | ||||
| -rw-r--r-- | arch/frv/lib/__lshrdi3.S | 40 | ||||
| -rw-r--r-- | arch/frv/lib/__muldi3.S | 32 | ||||
| -rw-r--r-- | arch/frv/lib/__negdi2.S | 28 | ||||
| -rw-r--r-- | arch/frv/lib/atomic-ops.S | 265 | ||||
| -rw-r--r-- | arch/frv/lib/cache.S | 98 | ||||
| -rw-r--r-- | arch/frv/lib/checksum.c | 148 | ||||
| -rw-r--r-- | arch/frv/lib/insl_ns.S | 52 | ||||
| -rw-r--r-- | arch/frv/lib/insl_sw.S | 40 | ||||
| -rw-r--r-- | arch/frv/lib/memcpy.S | 135 | ||||
| -rw-r--r-- | arch/frv/lib/memset.S | 182 | ||||
| -rw-r--r-- | arch/frv/lib/outsl_ns.S | 59 | ||||
| -rw-r--r-- | arch/frv/lib/outsl_sw.S | 45 |
15 files changed, 1213 insertions, 0 deletions
diff --git a/arch/frv/lib/Makefile b/arch/frv/lib/Makefile new file mode 100644 index 0000000..19be262 --- /dev/null +++ b/arch/frv/lib/Makefile @@ -0,0 +1,8 @@ +# +# Makefile for FRV-specific library files.. +# + +lib-y := \ + __ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o \ + checksum.o memcpy.o memset.o atomic-ops.o \ + outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o diff --git a/arch/frv/lib/__ashldi3.S b/arch/frv/lib/__ashldi3.S new file mode 100644 index 0000000..db5b6dc37 --- /dev/null +++ b/arch/frv/lib/__ashldi3.S @@ -0,0 +1,40 @@ +/* __ashldi3.S: 64-bit arithmetic shift left + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + .text + .p2align 4 + +############################################################################### +# +# unsigned long long __ashldi3(unsigned long long value [GR8:GR9], unsigned by [GR10]) +# +############################################################################### + .globl __ashldi3 + .type __ashldi3,@function +__ashldi3: + andicc.p gr10,#63,gr10,icc0 + setlos #32,gr5 + andicc.p gr10,#32,gr0,icc1 + beqlr icc0,#0 + ckeq icc1,cc4 ; cc4 is true if 0<N<32 + + # deal with a shift in the range 1<=N<=31 + csll.p gr8,gr10,gr8 ,cc4,#1 ; MSW <<= N + csub gr5,gr10,gr5 ,cc4,#1 ; M = 32 - N + csrl.p gr9,gr5,gr4 ,cc4,#1 + csll gr9,gr10,gr9 ,cc4,#1 ; LSW <<= N + cor.p gr4,gr8,gr8 ,cc4,#1 ; MSW |= LSW >> M + + # deal with a shift in the range 32<=N<=63 + csll gr9,gr10,gr8 ,cc4,#0 ; MSW = LSW << (N & 31 [implicit AND]) + cor.p gr0,gr0,gr9 ,cc4,#0 ; LSW = 0 + bralr + .size __ashldi3, .-__ashldi3 diff --git a/arch/frv/lib/__ashrdi3.S b/arch/frv/lib/__ashrdi3.S new file mode 100644 index 0000000..5742665 --- /dev/null +++ b/arch/frv/lib/__ashrdi3.S @@ -0,0 +1,41 @@ +/* __ashrdi3.S: 64-bit arithmetic shift right + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + .text + .p2align 4 + +############################################################################### +# +# signed long long __ashrdi3(signed long long value [GR8:GR9], unsigned by [GR10]) +# +############################################################################### + .globl __ashrdi3 + .type __ashrdi3,@function +__ashrdi3: + andicc.p gr10,#63,gr10,icc0 + setlos #32,gr5 + andicc.p gr10,#32,gr0,icc1 + beqlr icc0,#0 + setlos.p #31,gr6 + ckeq icc1,cc4 ; cc4 is true if 0<N<32 + + # deal with a shift in the range 1<=N<=31 + csrl.p gr9,gr10,gr9 ,cc4,#1 ; LSW >>= N + csub gr5,gr10,gr5 ,cc4,#1 ; M = 32 - N + csll.p gr8,gr5,gr4 ,cc4,#1 + csra gr8,gr10,gr8 ,cc4,#1 ; MSW >>= N + cor.p gr4,gr9,gr9 ,cc4,#1 ; LSW |= MSW << M + + # deal with a shift in the range 32<=N<=63 + csra gr8,gr10,gr9 ,cc4,#0 ; LSW = MSW >> (N & 31 [implicit AND]) + csra.p gr8,gr6,gr8 ,cc4,#0 ; MSW >>= 31 + bralr + .size __ashrdi3, .-__ashrdi3 diff --git a/arch/frv/lib/__lshrdi3.S b/arch/frv/lib/__lshrdi3.S new file mode 100644 index 0000000..7b41f63 --- /dev/null +++ b/arch/frv/lib/__lshrdi3.S @@ -0,0 +1,40 @@ +/* __lshrdi3.S: 64-bit logical shift right + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + .text + .p2align 4 + +############################################################################### +# +# unsigned long long __lshrdi3(unsigned long long value [GR8:GR9], unsigned by [GR10]) +# +############################################################################### + .globl __lshrdi3 + .type __lshrdi3,@function +__lshrdi3: + andicc.p gr10,#63,gr10,icc0 + setlos #32,gr5 + andicc.p gr10,#32,gr0,icc1 + beqlr icc0,#0 + ckeq icc1,cc4 ; cc4 is true if 0<N<32 + + # deal with a shift in the range 1<=N<=31 + csrl.p gr9,gr10,gr9 ,cc4,#1 ; LSW >>= N + csub gr5,gr10,gr5 ,cc4,#1 ; M = 32 - N + csll.p gr8,gr5,gr4 ,cc4,#1 + csrl gr8,gr10,gr8 ,cc4,#1 ; MSW >>= N + cor.p gr4,gr9,gr9 ,cc4,#1 ; LSW |= MSW << M + + # deal with a shift in the range 32<=N<=63 + csrl gr8,gr10,gr9 ,cc4,#0 ; LSW = MSW >> (N & 31 [implicit AND]) + cor.p gr0,gr0,gr8 ,cc4,#0 ; MSW = 0 + bralr + .size __lshrdi3, .-__lshrdi3 diff --git a/arch/frv/lib/__muldi3.S b/arch/frv/lib/__muldi3.S new file mode 100644 index 0000000..2703d9b --- /dev/null +++ b/arch/frv/lib/__muldi3.S @@ -0,0 +1,32 @@ +/* __muldi3.S: 64-bit multiply + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + .text + .p2align 4 + +############################################################################### +# +# unsigned long long __muldi3(unsigned long long x [GR8:GR9], +# unsigned long long y [GR10:GR11]) +# +############################################################################### + .globl __muldi3, __mulll, __umulll + .type __muldi3,@function +__muldi3: +__mulll: +__umulll: + umul gr8,gr11,gr4 ; GR4:GR5 = x.MSW * y.LSW + umul gr9,gr10,gr6 ; GR6:GR7 = x.LSW * y.MSW + umul.p gr9,gr11,gr8 ; GR8:GR9 = x.LSW * y.LSW + add gr5,gr7,gr5 + add.p gr8,gr5,gr8 ; GR8 += GR5 + GR7 + bralr + .size __muldi3, .-__muldi3 diff --git a/arch/frv/lib/__negdi2.S b/arch/frv/lib/__negdi2.S new file mode 100644 index 0000000..d1747bf --- /dev/null +++ b/arch/frv/lib/__negdi2.S @@ -0,0 +1,28 @@ +/* __negdi2.S: 64-bit negate + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + + .text + .p2align 4 + +############################################################################### +# +# unsigned long long __negdi2(unsigned long long value [GR8:GR9]) +# +############################################################################### + .globl __negdi2 + .type __negdi2,@function +__negdi2: + subcc gr0,gr9,gr9,icc0 + subx gr0,gr8,gr8,icc0 + bralr + .size __negdi2, .-__negdi2 + diff --git a/arch/frv/lib/atomic-ops.S b/arch/frv/lib/atomic-ops.S new file mode 100644 index 0000000..b03d510 --- /dev/null +++ b/arch/frv/lib/atomic-ops.S @@ -0,0 +1,265 @@ +/* atomic-ops.S: kernel atomic operations + * + * For an explanation of how atomic ops work in this arch, see: + * Documentation/fujitsu/frv/atomic-ops.txt + * + * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <asm/spr-regs.h> + + .text + .balign 4 + +############################################################################### +# +# unsigned long atomic_test_and_ANDNOT_mask(unsigned long mask, volatile unsigned long *v); +# +############################################################################### + .globl atomic_test_and_ANDNOT_mask + .type atomic_test_and_ANDNOT_mask,@function +atomic_test_and_ANDNOT_mask: + not.p gr8,gr10 +0: + orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ + ckeq icc3,cc7 + ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ + orcr cc7,cc7,cc3 /* set CC3 to true */ + and gr8,gr10,gr11 + cst.p gr11,@(gr9,gr0) ,cc3,#1 + corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ + beq icc3,#0,0b + bralr + + .size atomic_test_and_ANDNOT_mask, .-atomic_test_and_ANDNOT_mask + +############################################################################### +# +# unsigned long atomic_test_and_OR_mask(unsigned long mask, volatile unsigned long *v); +# +############################################################################### + .globl atomic_test_and_OR_mask + .type atomic_test_and_OR_mask,@function +atomic_test_and_OR_mask: + or.p gr8,gr8,gr10 +0: + orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ + ckeq icc3,cc7 + ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ + orcr cc7,cc7,cc3 /* set CC3 to true */ + or gr8,gr10,gr11 + cst.p gr11,@(gr9,gr0) ,cc3,#1 + corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ + beq icc3,#0,0b + bralr + + .size atomic_test_and_OR_mask, .-atomic_test_and_OR_mask + +############################################################################### +# +# unsigned long atomic_test_and_XOR_mask(unsigned long mask, volatile unsigned long *v); +# +############################################################################### + .globl atomic_test_and_XOR_mask + .type atomic_test_and_XOR_mask,@function +atomic_test_and_XOR_mask: + or.p gr8,gr8,gr10 +0: + orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ + ckeq icc3,cc7 + ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ + orcr cc7,cc7,cc3 /* set CC3 to true */ + xor gr8,gr10,gr11 + cst.p gr11,@(gr9,gr0) ,cc3,#1 + corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ + beq icc3,#0,0b + bralr + + .size atomic_test_and_XOR_mask, .-atomic_test_and_XOR_mask + +############################################################################### +# +# int atomic_add_return(int i, atomic_t *v) +# +############################################################################### + .globl atomic_add_return + .type atomic_add_return,@function +atomic_add_return: + or.p gr8,gr8,gr10 +0: + orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ + ckeq icc3,cc7 + ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ + orcr cc7,cc7,cc3 /* set CC3 to true */ + add gr8,gr10,gr8 + cst.p gr8,@(gr9,gr0) ,cc3,#1 + corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ + beq icc3,#0,0b + bralr + + .size atomic_add_return, .-atomic_add_return + +############################################################################### +# +# int atomic_sub_return(int i, atomic_t *v) +# +############################################################################### + .globl atomic_sub_return + .type atomic_sub_return,@function +atomic_sub_return: + or.p gr8,gr8,gr10 +0: + orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ + ckeq icc3,cc7 + ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ + orcr cc7,cc7,cc3 /* set CC3 to true */ + sub gr8,gr10,gr8 + cst.p gr8,@(gr9,gr0) ,cc3,#1 + corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ + beq icc3,#0,0b + bralr + + .size atomic_sub_return, .-atomic_sub_return + +############################################################################### +# +# uint8_t __xchg_8(uint8_t i, uint8_t *v) +# +############################################################################### + .globl __xchg_8 + .type __xchg_8,@function +__xchg_8: + or.p gr8,gr8,gr10 +0: + orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ + ckeq icc3,cc7 + ldub.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ + orcr cc7,cc7,cc3 /* set CC3 to true */ + cstb.p gr10,@(gr9,gr0) ,cc3,#1 + corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ + beq icc3,#0,0b + bralr + + .size __xchg_8, .-__xchg_8 + +############################################################################### +# +# uint16_t __xchg_16(uint16_t i, uint16_t *v) +# +############################################################################### + .globl __xchg_16 + .type __xchg_16,@function +__xchg_16: + or.p gr8,gr8,gr10 +0: + orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ + ckeq icc3,cc7 + lduh.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ + orcr cc7,cc7,cc3 /* set CC3 to true */ + csth.p gr10,@(gr9,gr0) ,cc3,#1 + corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ + beq icc3,#0,0b + bralr + + .size __xchg_16, .-__xchg_16 + +############################################################################### +# +# uint32_t __xchg_32(uint32_t i, uint32_t *v) +# +############################################################################### + .globl __xchg_32 + .type __xchg_32,@function +__xchg_32: + or.p gr8,gr8,gr10 +0: + orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ + ckeq icc3,cc7 + ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ + orcr cc7,cc7,cc3 /* set CC3 to true */ + cst.p gr10,@(gr9,gr0) ,cc3,#1 + corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ + beq icc3,#0,0b + bralr + + .size __xchg_32, .-__xchg_32 + +############################################################################### +# +# uint8_t __cmpxchg_8(uint8_t *v, uint8_t test, uint8_t new) +# +############################################################################### + .globl __cmpxchg_8 + .type __cmpxchg_8,@function +__cmpxchg_8: + or.p gr8,gr8,gr11 +0: + orcc gr0,gr0,gr0,icc3 + ckeq icc3,cc7 + ldub.p @(gr11,gr0),gr8 + orcr cc7,cc7,cc3 + sub gr8,gr9,gr7 + sllicc gr7,#24,gr0,icc0 + bne icc0,#0,1f + cstb.p gr10,@(gr11,gr0) ,cc3,#1 + corcc gr29,gr29,gr0 ,cc3,#1 + beq icc3,#0,0b +1: + bralr + + .size __cmpxchg_8, .-__cmpxchg_8 + +############################################################################### +# +# uint16_t __cmpxchg_16(uint16_t *v, uint16_t test, uint16_t new) +# +############################################################################### + .globl __cmpxchg_16 + .type __cmpxchg_16,@function +__cmpxchg_16: + or.p gr8,gr8,gr11 +0: + orcc gr0,gr0,gr0,icc3 + ckeq icc3,cc7 + lduh.p @(gr11,gr0),gr8 + orcr cc7,cc7,cc3 + sub gr8,gr9,gr7 + sllicc gr7,#16,gr0,icc0 + bne icc0,#0,1f + csth.p gr10,@(gr11,gr0) ,cc3,#1 + corcc gr29,gr29,gr0 ,cc3,#1 + beq icc3,#0,0b +1: + bralr + + .size __cmpxchg_16, .-__cmpxchg_16 + +############################################################################### +# +# uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new) +# +############################################################################### + .globl __cmpxchg_32 + .type __cmpxchg_32,@function +__cmpxchg_32: + or.p gr8,gr8,gr11 +0: + orcc gr0,gr0,gr0,icc3 + ckeq icc3,cc7 + ld.p @(gr11,gr0),gr8 + orcr cc7,cc7,cc3 + subcc gr8,gr9,gr7,icc0 + bne icc0,#0,1f + cst.p gr10,@(gr11,gr0) ,cc3,#1 + corcc gr29,gr29,gr0 ,cc3,#1 + beq icc3,#0,0b +1: + bralr + + .size __cmpxchg_32, .-__cmpxchg_32 diff --git a/arch/frv/lib/cache.S b/arch/frv/lib/cache.S new file mode 100644 index 0000000..0e10ad8d --- /dev/null +++ b/arch/frv/lib/cache.S @@ -0,0 +1,98 @@ +/* cache.S: cache managment routines + * + * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <asm/spr-regs.h> +#include <asm/cache.h> + + .text + .p2align 4 + +############################################################################### +# +# Write back a range of dcache +# - void frv_dcache_writeback(unsigned long start [GR8], unsigned long size [GR9]) +# +############################################################################### + .globl frv_dcache_writeback + .type frv_dcache_writeback,@function +frv_dcache_writeback: + andi gr8,~(L1_CACHE_BYTES-1),gr8 + +2: dcf @(gr8,gr0) + addi gr8,#L1_CACHE_BYTES,gr8 + cmp gr9,gr8,icc0 + bhi icc0,#2,2b + + membar + bralr + .size frv_dcache_writeback, .-frv_dcache_writeback + +############################################################################## +# +# Invalidate a range of dcache and icache +# - void frv_cache_invalidate(unsigned long start [GR8], unsigned long end [GR9]); +# +############################################################################### + .globl frv_cache_invalidate + .type frv_cache_invalidate,@function +frv_cache_invalidate: + andi gr8,~(L1_CACHE_BYTES-1),gr8 + +2: dci @(gr8,gr0) + ici @(gr8,gr0) + addi gr8,#L1_CACHE_BYTES,gr8 + cmp gr9,gr8,icc0 + bhi icc0,#2,2b + + membar + bralr + .size frv_cache_invalidate, .-frv_cache_invalidate + +############################################################################## +# +# Invalidate a range of icache +# - void frv_icache_invalidate(unsigned long start [GR8], unsigned long end [GR9]); +# +############################################################################### + .globl frv_icache_invalidate + .type frv_icache_invalidate,@function +frv_icache_invalidate: + andi gr8,~(L1_CACHE_BYTES-1),gr8 + +2: ici @(gr8,gr0) + addi gr8,#L1_CACHE_BYTES,gr8 + cmp gr9,gr8,icc0 + bhi icc0,#2,2b + + membar + bralr + .size frv_icache_invalidate, .-frv_icache_invalidate + +############################################################################### +# +# Write back and invalidate a range of dcache and icache +# - void frv_cache_wback_inv(unsigned long start [GR8], unsigned long end [GR9]) +# +############################################################################### + .globl frv_cache_wback_inv + .type frv_cache_wback_inv,@function +frv_cache_wback_inv: + andi gr8,~(L1_CACHE_BYTES-1),gr8 + +2: dcf @(gr8,gr0) + ici @(gr8,gr0) + addi gr8,#L1_CACHE_BYTES,gr8 + cmp gr9,gr8,icc0 + bhi icc0,#2,2b + + membar + bralr + .size frv_cache_wback_inv, .-frv_cache_wback_inv diff --git a/arch/frv/lib/checksum.c b/arch/frv/lib/checksum.c new file mode 100644 index 0000000..7bf5bd6 --- /dev/null +++ b/arch/frv/lib/checksum.c @@ -0,0 +1,148 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * IP/TCP/UDP checksumming routines + * + * Authors: Jorge Cwik, <jorge@laser.satlink.net> + * Arnt Gulbrandsen, <agulbra@nvg.unit.no> + * Tom May, <ftom@netcom.com> + * Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de> + * Lots of code moved from tcp.c and ip.c; see those files + * for more names. + * + * 03/02/96 Jes Sorensen, Andreas Schwab, Roman Hodek: + * Fixed some nasty bugs, causing some horrible crashes. + * A: At some points, the sum (%0) was used as + * length-counter instead of the length counter + * (%1). Thanks to Roman Hodek for pointing this out. + * B: GCC seems to mess up if one uses too many + * data-registers to hold input values and one tries to + * specify d0 and d1 as scratch registers. Letting gcc choose these + * registers itself solves the problem. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +/* Revised by Kenneth Albanowski for m68knommu. Basic problem: unaligned access kills, so most + of the assembly has to go. */ + +#include <net/checksum.h> +#include <asm/checksum.h> + +static inline unsigned short from32to16(unsigned long x) +{ + /* add up 16-bit and 16-bit for 16+c bit */ + x = (x & 0xffff) + (x >> 16); + /* add up carry.. */ + x = (x & 0xffff) + (x >> 16); + return x; +} + +static unsigned long do_csum(const unsigned char * buff, int len) +{ + int odd, count; + unsigned long result = 0; + + if (len <= 0) + goto out; + odd = 1 & (unsigned long) buff; + if (odd) { + result = *buff; + len--; + buff++; + } + count = len >> 1; /* nr of 16-bit words.. */ + if (count) { + if (2 & (unsigned long) buff) { + result += *(unsigned short *) buff; + count--; + len -= 2; + buff += 2; + } + count >>= 1; /* nr of 32-bit words.. */ + if (count) { + unsigned long carry = 0; + do { + unsigned long w = *(unsigned long *) buff; + count--; + buff += 4; + result += carry; + result += w; + carry = (w > result); + } while (count); + result += carry; + result = (result & 0xffff) + (result >> 16); + } + if (len & 2) { + result += *(unsigned short *) buff; + buff += 2; + } + } + if (len & 1) + result += (*buff << 8); + result = from32to16(result); + if (odd) + result = ((result >> 8) & 0xff) | ((result & 0xff) << 8); +out: + return result; +} + +/* + * computes the checksum of a memory block at buff, length len, + * and adds in "sum" (32-bit) + * + * returns a 32-bit number suitable for feeding into itself + * or csum_tcpudp_magic + * + * this function must be called with even lengths, except + * for the last fragment, which may be odd + * + * it's best to have buff aligned on a 32-bit boundary + */ +unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum) +{ + unsigned int result = do_csum(buff, len); + + /* add in old sum, and carry.. */ + result += sum; + if (sum > result) + result += 1; + return result; +} + +/* + * this routine is used for miscellaneous IP-like checksums, mainly + * in icmp.c + */ +unsigned short ip_compute_csum(const unsigned char * buff, int len) +{ + return ~do_csum(buff,len); +} + +/* + * copy from fs while checksumming, otherwise like csum_partial + */ + +unsigned int +csum_partial_copy_from_user(const char *src, char *dst, int len, int sum, int *csum_err) +{ + if (csum_err) *csum_err = 0; + memcpy(dst, src, len); + return csum_partial(dst, len, sum); +} + +/* + * copy from ds while checksumming, otherwise like csum_partial + */ + +unsigned int +csum_partial_copy(const char *src, char *dst, int len, int sum) +{ + memcpy(dst, src, len); + return csum_partial(dst, len, sum); +} diff --git a/arch/frv/lib/insl_ns.S b/arch/frv/lib/insl_ns.S new file mode 100644 index 0000000..d165842 --- /dev/null +++ b/arch/frv/lib/insl_ns.S @@ -0,0 +1,52 @@ +/* insl_ns.S: input array of 4b words from device port without byte swapping + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + + .text + .p2align 4 + +############################################################################### +# +# void __insl_ns(unsigned int port, void *buf, int n) +# +############################################################################### + .globl __insl_ns + .type __insl_ns,@function +__insl_ns: + andicc.p gr9,#3,gr0,icc0 + setlos #4,gr4 + bne icc0,#0,__insl_ns_misaligned + subi gr9,#4,gr9 +0: + ldi.p @(gr8,#0),gr5 + subicc gr10,#1,gr10,icc0 + stu.p gr5,@(gr9,gr4) + bhi icc0,#2,0b + bralr + +__insl_ns_misaligned: + subi.p gr9,#1,gr9 + setlos #1,gr4 +0: + ldi @(gr8,#0),gr5 + + srli gr5,#24,gr6 + stbu.p gr6,@(gr9,gr4) + srli gr5,#16,gr6 + stbu.p gr6,@(gr9,gr4) + srli gr5,#8,gr6 + stbu.p gr6,@(gr9,gr4) + subicc gr10,#1,gr10,icc0 + stbu.p gr5,@(gr9,gr4) + bhi icc0,#2,0b + bralr + + .size __insl_ns, .-__insl_ns diff --git a/arch/frv/lib/insl_sw.S b/arch/frv/lib/insl_sw.S new file mode 100644 index 0000000..9b5aa95 --- /dev/null +++ b/arch/frv/lib/insl_sw.S @@ -0,0 +1,40 @@ +/* insl_sw.S: input array of 4b words from device port with byte swapping + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + + .text + .p2align 4 + +############################################################################### +# +# void __insl_sw(unsigned int port, void *buf, int n) +# +############################################################################### + .globl __insl_sw + .type __insl_sw,@function +__insl_sw: + subi.p gr9,#1,gr9 + setlos #1,gr4 +0: + ldi.p @(gr8,#0),gr5 ; get 0xAABBCCDD + subicc gr10,#1,gr10,icc0 + + stbu.p gr5,@(gr9,gr4) ; write 0xDD + srli gr5,#8,gr5 + stbu.p gr5,@(gr9,gr4) ; write 0xCC + srli gr5,#8,gr5 + stbu.p gr5,@(gr9,gr4) ; write 0xBB + srli gr5,#8,gr5 + stbu.p gr5,@(gr9,gr4) ; write 0xAA + bhi icc0,#2,0b + bralr + + .size __insl_sw, .-__insl_sw diff --git a/arch/frv/lib/memcpy.S b/arch/frv/lib/memcpy.S new file mode 100644 index 0000000..9c59652 --- /dev/null +++ b/arch/frv/lib/memcpy.S @@ -0,0 +1,135 @@ +/* memcpy.S: optimised assembly memcpy + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + + .text + .p2align 4 + +############################################################################### +# +# void *memcpy(void *to, const char *from, size_t count) +# +# - NOTE: must not use any stack. exception detection performs function return +# to caller's fixup routine, aborting the remainder of the copy +# +############################################################################### + .globl memcpy,__memcpy_end + .type memcpy,@function +memcpy: + or.p gr8,gr9,gr4 + orcc gr10,gr0,gr0,icc3 + or.p gr10,gr4,gr4 + beqlr icc3,#0 + + # optimise based on best common alignment for to, from & count + andicc.p gr4,#0x0f,gr0,icc0 + setlos #8,gr11 + andicc.p gr4,#0x07,gr0,icc1 + beq icc0,#0,memcpy_16 + andicc.p gr4,#0x03,gr0,icc0 + beq icc1,#0,memcpy_8 + andicc.p gr4,#0x01,gr0,icc1 + beq icc0,#0,memcpy_4 + setlos.p #1,gr11 + beq icc1,#0,memcpy_2 + + # do byte by byte copy + sub.p gr8,gr11,gr3 + sub gr9,gr11,gr9 +0: ldubu.p @(gr9,gr11),gr4 + subicc gr10,#1,gr10,icc0 + stbu.p gr4,@(gr3,gr11) + bne icc0,#2,0b + bralr + + # do halfword by halfword copy +memcpy_2: + setlos #2,gr11 + sub.p gr8,gr11,gr3 + sub gr9,gr11,gr9 +0: lduhu.p @(gr9,gr11),gr4 + subicc gr10,#2,gr10,icc0 + sthu.p gr4,@(gr3,gr11) + bne icc0,#2,0b + bralr + + # do word by word copy +memcpy_4: + setlos #4,gr11 + sub.p gr8,gr11,gr3 + sub gr9,gr11,gr9 +0: ldu.p @(gr9,gr11),gr4 + subicc gr10,#4,gr10,icc0 + stu.p gr4,@(gr3,gr11) + bne icc0,#2,0b + bralr + + # do double-word by double-word copy +memcpy_8: + sub.p gr8,gr11,gr3 + sub gr9,gr11,gr9 +0: lddu.p @(gr9,gr11),gr4 + subicc gr10,#8,gr10,icc0 + stdu.p gr4,@(gr3,gr11) + bne icc0,#2,0b + bralr + + # do quad-word by quad-word copy +memcpy_16: + sub.p gr8,gr11,gr3 + sub gr9,gr11,gr9 +0: lddu @(gr9,gr11),gr4 + lddu.p @(gr9,gr11),gr6 + subicc gr10,#16,gr10,icc0 + stdu gr4,@(gr3,gr11) + stdu.p gr6,@(gr3,gr11) + bne icc0,#2,0b + bralr +__memcpy_end: + + .size memcpy, __memcpy_end-memcpy + +############################################################################### +# +# copy to/from userspace +# - return the number of bytes that could not be copied (0 on complete success) +# +# long __memcpy_user(void *dst, const void *src, size_t count) +# +############################################################################### + .globl __memcpy_user, __memcpy_user_error_lr, __memcpy_user_error_handler + .type __memcpy_user,@function +__memcpy_user: + movsg lr,gr7 + subi.p sp,#8,sp + add gr8,gr10,gr6 ; calculate expected end address + stdi gr6,@(sp,#0) + + # abuse memcpy to do the dirty work + call memcpy +__memcpy_user_error_lr: + ldi.p @(sp,#4),gr7 + setlos #0,gr8 + jmpl.p @(gr7,gr0) + addi sp,#8,sp + + # deal any exception generated by memcpy + # GR8 - memcpy's current dest address + # GR11 - memset's step value (index register for store insns) +__memcpy_user_error_handler: + lddi.p @(sp,#0),gr4 ; load GR4 with dst+count, GR5 with ret addr + add gr11,gr3,gr7 + sub.p gr4,gr7,gr8 + + addi sp,#8,sp + jmpl @(gr5,gr0) + + .size __memcpy_user, .-__memcpy_user diff --git a/arch/frv/lib/memset.S b/arch/frv/lib/memset.S new file mode 100644 index 0000000..55a3526 --- /dev/null +++ b/arch/frv/lib/memset.S @@ -0,0 +1,182 @@ +/* memset.S: optimised assembly memset + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + + .text + .p2align 4 + +############################################################################### +# +# void *memset(void *p, char ch, size_t count) +# +# - NOTE: must not use any stack. exception detection performs function return +# to caller's fixup routine, aborting the remainder of the set +# GR4, GR7, GR8, and GR11 must be managed +# +############################################################################### + .globl memset,__memset_end + .type memset,@function +memset: + orcc.p gr10,gr0,gr5,icc3 ; GR5 = count + andi gr9,#0xff,gr9 + or.p gr8,gr0,gr4 ; GR4 = address + beqlr icc3,#0 + + # conditionally write a byte to 2b-align the address + setlos.p #1,gr6 + andicc gr4,#1,gr0,icc0 + ckne icc0,cc7 + cstb.p gr9,@(gr4,gr0) ,cc7,#1 + csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3 + cadd.p gr4,gr6,gr4 ,cc7,#1 + beqlr icc3,#0 + + # conditionally write a word to 4b-align the address + andicc.p gr4,#2,gr0,icc0 + subicc gr5,#2,gr0,icc1 + setlos.p #2,gr6 + ckne icc0,cc7 + slli.p gr9,#8,gr12 ; need to double up the pattern + cknc icc1,cc5 + or.p gr9,gr12,gr12 + andcr cc7,cc5,cc7 + + csth.p gr12,@(gr4,gr0) ,cc7,#1 + csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3 + cadd.p gr4,gr6,gr4 ,cc7,#1 + beqlr icc3,#0 + + # conditionally write a dword to 8b-align the address + andicc.p gr4,#4,gr0,icc0 + subicc gr5,#4,gr0,icc1 + setlos.p #4,gr6 + ckne icc0,cc7 + slli.p gr12,#16,gr13 ; need to quadruple-up the pattern + cknc icc1,cc5 + or.p gr13,gr12,gr12 + andcr cc7,cc5,cc7 + + cst.p gr12,@(gr4,gr0) ,cc7,#1 + csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3 + cadd.p gr4,gr6,gr4 ,cc7,#1 + beqlr icc3,#0 + + or.p gr12,gr12,gr13 ; need to octuple-up the pattern + + # the address is now 8b-aligned - loop around writing 64b chunks + setlos #8,gr7 + subi.p gr4,#8,gr4 ; store with update index does weird stuff + setlos #64,gr6 + + subicc gr5,#64,gr0,icc0 +0: cknc icc0,cc7 + cstdu gr12,@(gr4,gr7) ,cc7,#1 + cstdu gr12,@(gr4,gr7) ,cc7,#1 + cstdu gr12,@(gr4,gr7) ,cc7,#1 + cstdu gr12,@(gr4,gr7) ,cc7,#1 + cstdu gr12,@(gr4,gr7) ,cc7,#1 + cstdu.p gr12,@(gr4,gr7) ,cc7,#1 + csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3 + cstdu.p gr12,@(gr4,gr7) ,cc7,#1 + subicc gr5,#64,gr0,icc0 + cstdu.p gr12,@(gr4,gr7) ,cc7,#1 + beqlr icc3,#0 + bnc icc0,#2,0b + + # now do 32-byte remnant + subicc.p gr5,#32,gr0,icc0 + setlos #32,gr6 + cknc icc0,cc7 + cstdu.p gr12,@(gr4,gr7) ,cc7,#1 + csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3 + cstdu.p gr12,@(gr4,gr7) ,cc7,#1 + setlos #16,gr6 + cstdu.p gr12,@(gr4,gr7) ,cc7,#1 + subicc gr5,#16,gr0,icc0 + cstdu.p gr12,@(gr4,gr7) ,cc7,#1 + beqlr icc3,#0 + + # now do 16-byte remnant + cknc icc0,cc7 + cstdu.p gr12,@(gr4,gr7) ,cc7,#1 + csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3 + cstdu.p gr12,@(gr4,gr7) ,cc7,#1 + beqlr icc3,#0 + + # now do 8-byte remnant + subicc gr5,#8,gr0,icc1 + cknc icc1,cc7 + cstdu.p gr12,@(gr4,gr7) ,cc7,#1 + csubcc gr5,gr7,gr5 ,cc7,#1 ; also set ICC3 + setlos.p #4,gr7 + beqlr icc3,#0 + + # now do 4-byte remnant + subicc gr5,#4,gr0,icc0 + addi.p gr4,#4,gr4 + cknc icc0,cc7 + cstu.p gr12,@(gr4,gr7) ,cc7,#1 + csubcc gr5,gr7,gr5 ,cc7,#1 ; also set ICC3 + subicc.p gr5,#2,gr0,icc1 + beqlr icc3,#0 + + # now do 2-byte remnant + setlos #2,gr7 + addi.p gr4,#2,gr4 + cknc icc1,cc7 + csthu.p gr12,@(gr4,gr7) ,cc7,#1 + csubcc gr5,gr7,gr5 ,cc7,#1 ; also set ICC3 + subicc.p gr5,#1,gr0,icc0 + beqlr icc3,#0 + + # now do 1-byte remnant + setlos #0,gr7 + addi.p gr4,#2,gr4 + cknc icc0,cc7 + cstb.p gr12,@(gr4,gr0) ,cc7,#1 + bralr +__memset_end: + + .size memset, __memset_end-memset + +############################################################################### +# +# clear memory in userspace +# - return the number of bytes that could not be cleared (0 on complete success) +# +# long __memset_user(void *p, size_t count) +# +############################################################################### + .globl __memset_user, __memset_user_error_lr, __memset_user_error_handler + .type __memset_user,@function +__memset_user: + movsg lr,gr11 + + # abuse memset to do the dirty work + or.p gr9,gr9,gr10 + setlos #0,gr9 + call memset +__memset_user_error_lr: + jmpl.p @(gr11,gr0) + setlos #0,gr8 + + # deal any exception generated by memset + # GR4 - memset's address tracking pointer + # GR7 - memset's step value (index register for store insns) + # GR8 - memset's original start address + # GR10 - memset's original count +__memset_user_error_handler: + add.p gr4,gr7,gr4 + add gr8,gr10,gr8 + jmpl.p @(gr11,gr0) + sub gr8,gr4,gr8 ; we return the amount left uncleared + + .size __memset_user, .-__memset_user diff --git a/arch/frv/lib/outsl_ns.S b/arch/frv/lib/outsl_ns.S new file mode 100644 index 0000000..4cd4c46 --- /dev/null +++ b/arch/frv/lib/outsl_ns.S @@ -0,0 +1,59 @@ +/* outsl_ns.S: output array of 4b words to device without byte swapping + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + + .text + .p2align 4 + +############################################################################### +# +# void __outsl_ns(unsigned int port, const void *buf, int n) +# +############################################################################### + .globl __outsl_ns + .type __outsl_ns,@function +__outsl_ns: + andicc.p gr9,#3,gr0,icc0 + setlos #4,gr4 + bne icc0,#0,__outsl_ns_misaligned + subi gr9,#4,gr9 +0: + ldu.p @(gr9,gr4),gr5 + subicc gr10,#1,gr10,icc0 + sti.p gr5,@(gr8,#0) + bhi icc0,#2,0b + + membar + bralr + +__outsl_ns_misaligned: + subi.p gr9,#1,gr9 + setlos #1,gr4 +0: + ldubu @(gr9,gr4),gr5 + ldubu.p @(gr9,gr4),gr6 + slli gr5,#8,gr5 + ldubu.p @(gr9,gr4),gr7 + or gr5,gr6,gr5 + ldubu.p @(gr9,gr4),gr6 + slli gr5,#16,gr5 + slli.p gr7,#8,gr7 + or gr5,gr6,gr5 + subicc.p gr10,#1,gr10,icc0 + or gr5,gr7,gr5 + + sti.p gr5,@(gr8,#0) + bhi icc0,#2,0b + + membar + bralr + + .size __outsl_ns, .-__outsl_ns diff --git a/arch/frv/lib/outsl_sw.S b/arch/frv/lib/outsl_sw.S new file mode 100644 index 0000000..7eb56d3 --- /dev/null +++ b/arch/frv/lib/outsl_sw.S @@ -0,0 +1,45 @@ +/* outsl_ns.S: output array of 4b words to device with byte swapping + * + * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + + + .text + .p2align 4 + +############################################################################### +# +# void __outsl_sw(unsigned int port, const void *buf, int n) +# +############################################################################### + .globl __outsl_sw + .type __outsl_sw,@function +__outsl_sw: + subi.p gr9,#1,gr9 + setlos #1,gr4 +0: + ldubu @(gr9,gr4),gr5 + ldubu @(gr9,gr4),gr6 + slli gr6,#8,gr6 + ldubu.p @(gr9,gr4),gr7 + or gr5,gr6,gr5 + ldubu.p @(gr9,gr4),gr6 + slli gr7,#16,gr7 + slli.p gr6,#24,gr6 + or gr5,gr7,gr5 + subicc.p gr10,#1,gr10,icc0 + or gr5,gr6,gr5 + + sti.p gr5,@(gr8,#0) + bhi icc0,#2,0b + + membar + bralr + + .size __outsl_sw, .-__outsl_sw |
