Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
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