[PATCH] frv: implement and export various things required by modules

Export a number of features required to build all the modules.  It also
implements the following simple features:

 (*) csum_partial_copy_from_user() for MMU as well as no-MMU.

 (*) __ucmpdi2().

so that they can be exported too.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

14 files changed, 155 insertions, 14 deletions

diff --git a/arch/frv/kernel/frv_ksyms.c b/arch/frv/kernel/frv_ksyms.c
index 1a76d5247190..5f118c89d091 100644
--- a/arch/frv/kernel/frv_ksyms.c
+++ b/arch/frv/kernel/frv_ksyms.c
@@ -16,10 +16,11 @@
 #include <asm/semaphore.h>
 #include <asm/checksum.h>
 #include <asm/hardirq.h>
-#include <asm/current.h>
+#include <asm/cacheflush.h>
 
 extern void dump_thread(struct pt_regs *, struct user *);
 extern long __memcpy_user(void *dst, const void *src, size_t count);
+extern long __memset_user(void *dst, const void *src, size_t count);
 
 /* platform dependent support */
 
@@ -50,7 +51,11 @@ EXPORT_SYMBOL(disable_irq);
 EXPORT_SYMBOL(__res_bus_clock_speed_HZ);
 EXPORT_SYMBOL(__page_offset);
 EXPORT_SYMBOL(__memcpy_user);
-EXPORT_SYMBOL(flush_dcache_page);
+EXPORT_SYMBOL(__memset_user);
+EXPORT_SYMBOL(frv_dcache_writeback);
+EXPORT_SYMBOL(frv_cache_invalidate);
+EXPORT_SYMBOL(frv_icache_invalidate);
+EXPORT_SYMBOL(frv_cache_wback_inv);
 
 #ifndef CONFIG_MMU
 EXPORT_SYMBOL(memory_start);
@@ -72,6 +77,9 @@ EXPORT_SYMBOL(memcmp);
 EXPORT_SYMBOL(memscan);
 EXPORT_SYMBOL(memmove);
 
+EXPORT_SYMBOL(__outsl_ns);
+EXPORT_SYMBOL(__insl_ns);
+
 EXPORT_SYMBOL(get_wchan);
 
 #ifdef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
@@ -80,14 +88,13 @@ EXPORT_SYMBOL(atomic_test_and_OR_mask);
 EXPORT_SYMBOL(atomic_test_and_XOR_mask);
 EXPORT_SYMBOL(atomic_add_return);
 EXPORT_SYMBOL(atomic_sub_return);
-EXPORT_SYMBOL(__xchg_8);
-EXPORT_SYMBOL(__xchg_16);
 EXPORT_SYMBOL(__xchg_32);
-EXPORT_SYMBOL(__cmpxchg_8);
-EXPORT_SYMBOL(__cmpxchg_16);
 EXPORT_SYMBOL(__cmpxchg_32);
 #endif
 
+EXPORT_SYMBOL(__debug_bug_printk);
+EXPORT_SYMBOL(__delay_loops_MHz);
+
 /*
  * libgcc functions - functions that are used internally by the
  * compiler...  (prototypes are not correct though, but that
@@ -101,6 +108,8 @@ extern void __divdi3(void);
 extern void __lshrdi3(void);
 extern void __moddi3(void);
 extern void __muldi3(void);
+extern void __mulll(void);
+extern void __umulll(void);
 extern void __negdi2(void);
 extern void __ucmpdi2(void);
 extern void __udivdi3(void);
@@ -116,8 +125,10 @@ EXPORT_SYMBOL(__ashrdi3);
 EXPORT_SYMBOL(__lshrdi3);
 //EXPORT_SYMBOL(__moddi3);
 EXPORT_SYMBOL(__muldi3);
+EXPORT_SYMBOL(__mulll);
+EXPORT_SYMBOL(__umulll);
 EXPORT_SYMBOL(__negdi2);
-//EXPORT_SYMBOL(__ucmpdi2);
+EXPORT_SYMBOL(__ucmpdi2);
 //EXPORT_SYMBOL(__udivdi3);
 //EXPORT_SYMBOL(__udivmoddi4);
 //EXPORT_SYMBOL(__umoddi3);
diff --git a/arch/frv/kernel/irq.c b/arch/frv/kernel/irq.c
index 8c524cdd2717..59580c59c62c 100644
--- a/arch/frv/kernel/irq.c
+++ b/arch/frv/kernel/irq.c
@@ -32,6 +32,7 @@
 #include <linux/irq.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/module.h>
 
 #include <asm/atomic.h>
 #include <asm/io.h>
@@ -178,6 +179,8 @@ void disable_irq_nosync(unsigned int irq)
         spin_unlock_irqrestore(&level->lock, flags);
 }
 
+EXPORT_SYMBOL(disable_irq_nosync);
+
 /**
  *      disable_irq - disable an irq and wait for completion
  *      @irq: Interrupt to disable
@@ -204,6 +207,8 @@ void disable_irq(unsigned int irq)
 #endif
 }
 
+EXPORT_SYMBOL(disable_irq);
+
 /**
  *      enable_irq - enable handling of an irq
  *      @irq: Interrupt to enable
@@ -268,6 +273,8 @@ void enable_irq(unsigned int irq)
         spin_unlock_irqrestore(&level->lock, flags);
 }
 
+EXPORT_SYMBOL(enable_irq);
+
 /*****************************************************************************/
 /*
  * handles all normal device IRQ's
@@ -425,6 +432,8 @@ int request_irq(unsigned int irq,
         return retval;
 }
 
+EXPORT_SYMBOL(request_irq);
+
 /**
  *      free_irq - free an interrupt
  *      @irq: Interrupt line to free
@@ -496,6 +505,8 @@ void free_irq(unsigned int irq, void *dev_id)
         }
 }
 
+EXPORT_SYMBOL(free_irq);
+
 /*
  * IRQ autodetection code..
  *
@@ -519,6 +530,8 @@ unsigned long probe_irq_on(void)
         return 0;
 }
 
+EXPORT_SYMBOL(probe_irq_on);
+
 /*
  * Return a mask of triggered interrupts (this
  * can handle only legacy ISA interrupts).
@@ -542,6 +555,8 @@ unsigned int probe_irq_mask(unsigned long xmask)
         return 0;
 }
 
+EXPORT_SYMBOL(probe_irq_mask);
+
 /*
  * Return the one interrupt that triggered (this can
  * handle any interrupt source).
@@ -571,6 +586,8 @@ int probe_irq_off(unsigned long xmask)
         return -1;
 }
 
+EXPORT_SYMBOL(probe_irq_off);
+
 /* this was setup_x86_irq but it seems pretty generic */
 int setup_irq(unsigned int irq, struct irqaction *new)
 {
diff --git a/arch/frv/kernel/pm.c b/arch/frv/kernel/pm.c
index 712c3c24c954..f0b8fff3e733 100644
--- a/arch/frv/kernel/pm.c
+++ b/arch/frv/kernel/pm.c
@@ -13,6 +13,7 @@
 
 #include <linux/config.h>
 #include <linux/init.h>
+#include <linux/module.h>
 #include <linux/pm.h>
 #include <linux/pm_legacy.h>
 #include <linux/sched.h>
@@ -27,6 +28,7 @@
 #include "local.h"
 
 void (*pm_power_off)(void);
+EXPORT_SYMBOL(pm_power_off);
 
 extern void frv_change_cmode(int);
 
diff --git a/arch/frv/kernel/time.c b/arch/frv/kernel/time.c
index 2e9741227b73..24cf85f89e40 100644
--- a/arch/frv/kernel/time.c
+++ b/arch/frv/kernel/time.c
@@ -189,6 +189,8 @@ void do_gettimeofday(struct timeval *tv)
         tv->tv_usec = usec;
 }
 
+EXPORT_SYMBOL(do_gettimeofday);
+
 int do_settimeofday(struct timespec *tv)
 {
         time_t wtm_sec, sec = tv->tv_sec;
@@ -218,6 +220,7 @@ int do_settimeofday(struct timespec *tv)
         clock_was_set();
         return 0;
 }
+
 EXPORT_SYMBOL(do_settimeofday);
 
 /*
diff --git a/arch/frv/kernel/traps.c b/arch/frv/kernel/traps.c
index 89073cae4b5d..9eb84b2e6abc 100644
--- a/arch/frv/kernel/traps.c
+++ b/arch/frv/kernel/traps.c
@@ -19,6 +19,7 @@
 #include <linux/string.h>
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/module.h>
 
 #include <asm/setup.h>
 #include <asm/fpu.h>
@@ -250,6 +251,8 @@ void dump_stack(void)
         show_stack(NULL, NULL);
 }
 
+EXPORT_SYMBOL(dump_stack);
+
 void show_stack(struct task_struct *task, unsigned long *sp)
 {
 }
diff --git a/arch/frv/kernel/uaccess.c b/arch/frv/kernel/uaccess.c
index f3fd58a5bc4a..9b751c0f0e84 100644
--- a/arch/frv/kernel/uaccess.c
+++ b/arch/frv/kernel/uaccess.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/mm.h>
+#include <linux/module.h>
 #include <asm/uaccess.h>
 
 /*****************************************************************************/
@@ -58,8 +59,11 @@ long strncpy_from_user(char *dst, const char *src, long count)
                 memset(p, 0, count); /* clear remainder of buffer [security] */
 
         return err;
+
 } /* end strncpy_from_user() */
 
+EXPORT_SYMBOL(strncpy_from_user);
+
 /*****************************************************************************/
 /*
  * Return the size of a string (including the ending 0)
@@ -92,4 +96,7 @@ long strnlen_user(const char *src, long count)
         }
 
         return p - src + 1; /* return length including NUL */
+
 } /* end strnlen_user() */
+
+EXPORT_SYMBOL(strnlen_user);
diff --git a/arch/frv/lib/Makefile b/arch/frv/lib/Makefile
index 19be2626d5e6..08be305c9f44 100644
--- a/arch/frv/lib/Makefile
+++ b/arch/frv/lib/Makefile
@@ -3,6 +3,6 @@
 #
 
 lib-y := \
-        __ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o \
+        __ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o __ucmpdi2.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/__ucmpdi2.S b/arch/frv/lib/__ucmpdi2.S
new file mode 100644
index 000000000000..d892f16ffaa9
--- /dev/null
+++ b/arch/frv/lib/__ucmpdi2.S
@@ -0,0 +1,45 @@
+/* __ucmpdi2.S: 64-bit unsigned compare
+ *
+ * Copyright (C) 2006 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
+
+###############################################################################
+#
+# int __ucmpdi2(unsigned long long a [GR8:GR9],
+#               unsigned long long b [GR10:GR11])
+#
+# - returns 0, 1, or 2 as a <, =, > b respectively.
+#
+###############################################################################
+        .globl          __ucmpdi2
+        .type           __ucmpdi2,@function
+__ucmpdi2:
+        or.p            gr8,gr0,gr4
+        subcc           gr8,gr10,gr0,icc0
+        setlos.p        #0,gr8
+        bclr            icc0,#2                 ; a.msw < b.msw
+
+        setlos.p        #2,gr8
+        bhilr           icc0,#0                 ; a.msw > b.msw
+
+        subcc.p         gr9,gr11,gr0,icc1
+        setlos          #0,gr8
+        setlos.p        #2,gr9
+        setlos          #1,gr7
+        cknc            icc1,cc6
+        cor.p           gr9,gr0,gr8,            cc6,#1
+        cckls           icc1,cc4,               cc6,#1
+        andcr           cc6,cc4,cc4
+        cor             gr7,gr0,gr8,            cc4,#1
+        bralr
+        .size           __ucmpdi2, .-__ucmpdi2
diff --git a/arch/frv/lib/checksum.c b/arch/frv/lib/checksum.c
index 7bf5bd6cac8a..20e7dfc474ef 100644
--- a/arch/frv/lib/checksum.c
+++ b/arch/frv/lib/checksum.c
@@ -33,6 +33,7 @@
 
 #include <net/checksum.h>
 #include <asm/checksum.h>
+#include <linux/module.h>
 
 static inline unsigned short from32to16(unsigned long x)
 {
@@ -115,34 +116,52 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum)
         return result;
 }
 
+EXPORT_SYMBOL(csum_partial);
+
 /*
  * 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);
+        return ~do_csum(buff, len);
 }
 
+EXPORT_SYMBOL(ip_compute_csum);
+
 /*
  * 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)
+csum_partial_copy_from_user(const char __user *src, char *dst,
+                            int len, int sum, int *csum_err)
 {
-        if (csum_err) *csum_err = 0;
-        memcpy(dst, src, len);
+        int rem;
+
+        if (csum_err)
+                *csum_err = 0;
+
+        rem = copy_from_user(dst, src, len);
+        if (rem != 0) {
+                if (csum_err)
+                        *csum_err = -EFAULT;
+                memset(dst + len - rem, 0, rem);
+                len = rem;
+        }
+
         return csum_partial(dst, len, sum);
 }
 
+EXPORT_SYMBOL(csum_partial_copy_from_user);
+
 /*
  * 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);
 }
+
+EXPORT_SYMBOL(csum_partial_copy);
diff --git a/arch/frv/mb93090-mb00/pci-dma-nommu.c b/arch/frv/mb93090-mb00/pci-dma-nommu.c
index 2082a9647f4f..4985466b1a7c 100644
--- a/arch/frv/mb93090-mb00/pci-dma-nommu.c
+++ b/arch/frv/mb93090-mb00/pci-dma-nommu.c
@@ -83,6 +83,8 @@ void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_hand
         return NULL;
 }
 
+EXPORT_SYMBOL(dma_alloc_coherent);
+
 void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
 {
         struct dma_alloc_record *rec;
@@ -102,6 +104,8 @@ void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_
         BUG();
 }
 
+EXPORT_SYMBOL(dma_free_coherent);
+
 /*
  * Map a single buffer of the indicated size for DMA in streaming mode.
  * The 32-bit bus address to use is returned.
@@ -120,6 +124,8 @@ dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
         return virt_to_bus(ptr);
 }
 
+EXPORT_SYMBOL(dma_map_single);
+
 /*
  * Map a set of buffers described by scatterlist in streaming
  * mode for DMA.  This is the scather-gather version of the
@@ -150,3 +156,5 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
 
         return nents;
 }
+
+EXPORT_SYMBOL(dma_map_sg);
diff --git a/arch/frv/mb93090-mb00/pci-dma.c b/arch/frv/mb93090-mb00/pci-dma.c
index 86fbdadc51b6..671ce1e8434f 100644
--- a/arch/frv/mb93090-mb00/pci-dma.c
+++ b/arch/frv/mb93090-mb00/pci-dma.c
@@ -28,11 +28,15 @@ void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_hand
         return ret;
 }
 
+EXPORT_SYMBOL(dma_alloc_coherent);
+
 void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
 {
         consistent_free(vaddr);
 }
 
+EXPORT_SYMBOL(dma_free_coherent);
+
 /*
  * Map a single buffer of the indicated size for DMA in streaming mode.
  * The 32-bit bus address to use is returned.
@@ -51,6 +55,8 @@ dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
         return virt_to_bus(ptr);
 }
 
+EXPORT_SYMBOL(dma_map_single);
+
 /*
  * Map a set of buffers described by scatterlist in streaming
  * mode for DMA.  This is the scather-gather version of the
@@ -96,6 +102,8 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
         return nents;
 }
 
+EXPORT_SYMBOL(dma_map_sg);
+
 dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset,
                         size_t size, enum dma_data_direction direction)
 {
@@ -103,3 +111,5 @@ dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long off
         flush_dcache_page(page);
         return (dma_addr_t) page_to_phys(page) + offset;
 }
+
+EXPORT_SYMBOL(dma_map_page);
diff --git a/arch/frv/mm/cache-page.c b/arch/frv/mm/cache-page.c
index 683b5e344318..0261cbe153b5 100644
--- a/arch/frv/mm/cache-page.c
+++ b/arch/frv/mm/cache-page.c
@@ -11,6 +11,7 @@
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <linux/highmem.h>
+#include <linux/module.h>
 #include <asm/pgalloc.h>
 
 /*****************************************************************************/
@@ -38,6 +39,8 @@ void flush_dcache_page(struct page *page)
 
 } /* end flush_dcache_page() */
 
+EXPORT_SYMBOL(flush_dcache_page);
+
 /*****************************************************************************/
 /*
  * ICI takes a virtual address and the page may not currently have one
@@ -64,3 +67,5 @@ void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
         }
 
 } /* end flush_icache_user_range() */
+
+EXPORT_SYMBOL(flush_icache_user_range);
diff --git a/arch/frv/mm/highmem.c b/arch/frv/mm/highmem.c
index 7dc8fbf3af97..7f77db7fabc7 100644
--- a/arch/frv/mm/highmem.c
+++ b/arch/frv/mm/highmem.c
@@ -9,6 +9,7 @@
  * 2 of the License, or (at your option) any later version.
  */
 #include <linux/highmem.h>
+#include <linux/module.h>
 
 void *kmap(struct page *page)
 {
@@ -18,6 +19,8 @@ void *kmap(struct page *page)
         return kmap_high(page);
 }
 
+EXPORT_SYMBOL(kmap);
+
 void kunmap(struct page *page)
 {
         if (in_interrupt())
@@ -27,7 +30,12 @@ void kunmap(struct page *page)
         kunmap_high(page);
 }
 
+EXPORT_SYMBOL(kunmap);
+
 struct page *kmap_atomic_to_page(void *ptr)
 {
         return virt_to_page(ptr);
 }
+
+
+EXPORT_SYMBOL(kmap_atomic_to_page);
diff --git a/lib/find_next_bit.c b/lib/find_next_bit.c
index d08302d2a42c..c05b4b19cf6c 100644
--- a/lib/find_next_bit.c
+++ b/lib/find_next_bit.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/bitops.h>
+#include <linux/module.h>
 
 int find_next_bit(const unsigned long *addr, int size, int offset)
 {
@@ -53,3 +54,5 @@ int find_next_bit(const unsigned long *addr, int size, int offset)
 
         return offset;
 }
+
+EXPORT_SYMBOL(find_next_bit);