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tile 32-bit big-endian: fix bugs in syscall argument order

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The glibc __LONG_LONG_PAIR passes arguments in a different
order for BE platforms vs LE platforms.  Adjust the expectations
in the kernel 32-bit syscall routines for BE to match.

Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
This commit is contained in:
Chris Metcalf
2016-06-15 15:19:04 -04:00
parent 9fbd49cff0
commit ca768667d8
2 changed files with 32 additions and 16 deletions
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arch/tile/kernel/sys.c
+10 -3
View File
@@ -33,6 +33,7 @@
#include <asm/pgtable.h>
#include <asm/homecache.h>
#include <asm/cachectl.h>
#include <asm/byteorder.h>
#include <arch/chip.h>
SYSCALL_DEFINE3(cacheflush, unsigned long, addr, unsigned long, len,
@@ -59,13 +60,19 @@ SYSCALL_DEFINE3(cacheflush, unsigned long, addr, unsigned long, len,
#if !defined(__tilegx__) || defined(CONFIG_COMPAT)
ssize_t sys32_readahead(int fd, u32 offset_lo, u32 offset_hi, u32 count)
#ifdef __BIG_ENDIAN
#define SYSCALL_PAIR(name) u32 name ## _hi, u32 name ## _lo
#else
#define SYSCALL_PAIR(name) u32 name ## _lo, u32 name ## _hi
#endif
ssize_t sys32_readahead(int fd, SYSCALL_PAIR(offset), u32 count)
{
return sys_readahead(fd, ((loff_t)offset_hi << 32) | offset_lo, count);
}
int sys32_fadvise64_64(int fd, u32 offset_lo, u32 offset_hi,
u32 len_lo, u32 len_hi, int advice)
int sys32_fadvise64_64(int fd, SYSCALL_PAIR(offset),
SYSCALL_PAIR(len), int advice)
{
return sys_fadvise64_64(fd, ((loff_t)offset_hi << 32) | offset_lo,
((loff_t)len_hi << 32) | len_lo, advice);