Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze

* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Fix module loading on system with WB cache
  microblaze: export assembly functions used by modules
  microblaze: Remove powerpc code from Microblaze port
  microblaze: Remove compilation warnings in cache macro
  microblaze: export assembly functions used by modules
  microblaze: fix get_user/put_user side-effects
  microblaze: re-enable interrupts before calling schedule
This commit is contained in:
Linus Torvalds 2010-05-14 07:29:29 -07:00
commit 7ac992ef61
8 changed files with 89 additions and 20 deletions

View file

@ -182,6 +182,39 @@ extern long __user_bad(void);
* Returns zero on success, or -EFAULT on error.
* On error, the variable @x is set to zero.
*/
#define get_user(x, ptr) \
__get_user_check((x), (ptr), sizeof(*(ptr)))
#define __get_user_check(x, ptr, size) \
({ \
unsigned long __gu_val = 0; \
const typeof(*(ptr)) __user *__gu_addr = (ptr); \
int __gu_err = 0; \
\
if (access_ok(VERIFY_READ, __gu_addr, size)) { \
switch (size) { \
case 1: \
__get_user_asm("lbu", __gu_addr, __gu_val, \
__gu_err); \
break; \
case 2: \
__get_user_asm("lhu", __gu_addr, __gu_val, \
__gu_err); \
break; \
case 4: \
__get_user_asm("lw", __gu_addr, __gu_val, \
__gu_err); \
break; \
default: \
__gu_err = __user_bad(); \
break; \
} \
} else { \
__gu_err = -EFAULT; \
} \
x = (typeof(*(ptr)))__gu_val; \
__gu_err; \
})
#define __get_user(x, ptr) \
({ \
@ -206,12 +239,6 @@ extern long __user_bad(void);
})
#define get_user(x, ptr) \
({ \
access_ok(VERIFY_READ, (ptr), sizeof(*(ptr))) \
? __get_user((x), (ptr)) : -EFAULT; \
})
#define __put_user_asm(insn, __gu_ptr, __gu_val, __gu_err) \
({ \
__asm__ __volatile__ ( \
@ -266,6 +293,42 @@ extern long __user_bad(void);
*
* Returns zero on success, or -EFAULT on error.
*/
#define put_user(x, ptr) \
__put_user_check((x), (ptr), sizeof(*(ptr)))
#define __put_user_check(x, ptr, size) \
({ \
typeof(*(ptr)) __pu_val; \
typeof(*(ptr)) __user *__pu_addr = (ptr); \
int __pu_err = 0; \
\
__pu_val = (x); \
if (access_ok(VERIFY_WRITE, __pu_addr, size)) { \
switch (size) { \
case 1: \
__put_user_asm("sb", __pu_addr, __pu_val, \
__pu_err); \
break; \
case 2: \
__put_user_asm("sh", __pu_addr, __pu_val, \
__pu_err); \
break; \
case 4: \
__put_user_asm("sw", __pu_addr, __pu_val, \
__pu_err); \
break; \
case 8: \
__put_user_asm_8(__pu_addr, __pu_val, __pu_err);\
break; \
default: \
__pu_err = __user_bad(); \
break; \
} \
} else { \
__pu_err = -EFAULT; \
} \
__pu_err; \
})
#define __put_user(x, ptr) \
({ \
@ -290,18 +353,6 @@ extern long __user_bad(void);
__gu_err; \
})
#ifndef CONFIG_MMU
#define put_user(x, ptr) __put_user((x), (ptr))
#else /* CONFIG_MMU */
#define put_user(x, ptr) \
({ \
access_ok(VERIFY_WRITE, (ptr), sizeof(*(ptr))) \
? __put_user((x), (ptr)) : -EFAULT; \
})
#endif /* CONFIG_MMU */
/* copy_to_from_user */
#define __copy_from_user(to, from, n) \

View file

@ -137,8 +137,9 @@ do { \
do { \
int step = -line_length; \
int align = ~(line_length - 1); \
int count; \
end = ((end & align) == end) ? end - line_length : end & align; \
int count = end - start; \
count = end - start; \
WARN_ON(count < 0); \
\
__asm__ __volatile__ (" 1: " #op " %0, %1; \

View file

@ -476,6 +476,8 @@ ENTRY(ret_from_fork)
nop
work_pending:
enable_irq
andi r11, r19, _TIF_NEED_RESCHED
beqi r11, 1f
bralid r15, schedule

View file

@ -52,3 +52,14 @@ EXPORT_SYMBOL_GPL(_ebss);
extern void _mcount(void);
EXPORT_SYMBOL(_mcount);
#endif
/*
* Assembly functions that may be used (directly or indirectly) by modules
*/
EXPORT_SYMBOL(__copy_tofrom_user);
EXPORT_SYMBOL(__strncpy_user);
#ifdef CONFIG_OPT_LIB_ASM
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memmove);
#endif

View file

@ -16,6 +16,7 @@
#include <linux/string.h>
#include <asm/pgtable.h>
#include <asm/cacheflush.h>
void *module_alloc(unsigned long size)
{
@ -151,6 +152,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,
int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
struct module *module)
{
flush_dcache();
return 0;
}

View file

@ -47,6 +47,7 @@ unsigned long memory_start;
EXPORT_SYMBOL(memory_start);
unsigned long memory_end; /* due to mm/nommu.c */
unsigned long memory_size;
EXPORT_SYMBOL(memory_size);
/*
* paging_init() sets up the page tables - in fact we've already done this.

View file

@ -42,6 +42,7 @@
unsigned long ioremap_base;
unsigned long ioremap_bot;
EXPORT_SYMBOL(ioremap_bot);
/* The maximum lowmem defaults to 768Mb, but this can be configured to
* another value.

View file

@ -1507,7 +1507,7 @@ void pcibios_finish_adding_to_bus(struct pci_bus *bus)
pci_bus_add_devices(bus);
/* Fixup EEH */
eeh_add_device_tree_late(bus);
/* eeh_add_device_tree_late(bus); */
}
EXPORT_SYMBOL_GPL(pcibios_finish_adding_to_bus);