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EFAULT - update __get_user() __put_user(), by Thayne Harbaugh.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3508 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-11-02 20:24:22 +00:00
parent 80210bcd71
commit 89343ecde5
1 changed files with 13 additions and 13 deletions
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26
linux-user/qemu.h
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@ -206,22 +206,22 @@ int target_msync(abi_ulong start, abi_ulong len, int flags);
#define access_ok(type,addr,size) \ #define access_ok(type,addr,size) \
(page_check_range((target_ulong)addr,size,(type==VERIFY_READ)?PAGE_READ:PAGE_WRITE)==0) (page_check_range((target_ulong)addr,size,(type==VERIFY_READ)?PAGE_READ:PAGE_WRITE)==0)
/* NOTE get_user and put_user use host addresses. */ /* NOTE __get_user and __put_user use host pointers and don't check access. */
#define __put_user(x,ptr)\ #define __put_user(x, hptr)\
({\ ({\
int size = sizeof(*ptr);\ int size = sizeof(*hptr);\
switch(size) {\ switch(size) {\
case 1:\ case 1:\
*(uint8_t *)(ptr) = (typeof(*ptr))(x);\ *(uint8_t *)(hptr) = (typeof(*hptr))(x);\
break;\ break;\
case 2:\ case 2:\
*(uint16_t *)(ptr) = tswap16((typeof(*ptr))(x));\ *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
break;\ break;\
case 4:\ case 4:\
*(uint32_t *)(ptr) = tswap32((typeof(*ptr))(x));\ *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\
break;\ break;\
case 8:\ case 8:\
*(uint64_t *)(ptr) = tswap64((typeof(*ptr))(x));\ *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\
break;\ break;\
default:\ default:\
abort();\ abort();\
@ -229,21 +229,21 @@ int target_msync(abi_ulong start, abi_ulong len, int flags);
0;\ 0;\
}) })
#define __get_user(x, ptr) \ #define __get_user(x, hptr) \
({\ ({\
int size = sizeof(*ptr);\ int size = sizeof(*hptr);\
switch(size) {\ switch(size) {\
case 1:\ case 1:\
x = (typeof(*ptr))*(uint8_t *)(ptr);\ x = (typeof(*hptr))*(uint8_t *)(hptr);\
break;\ break;\
case 2:\ case 2:\
x = (typeof(*ptr))tswap16(*(uint16_t *)(ptr));\ x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\
break;\ break;\
case 4:\ case 4:\
x = (typeof(*ptr))tswap32(*(uint32_t *)(ptr));\ x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\
break;\ break;\
case 8:\ case 8:\
x = (typeof(*ptr))tswap64(*(uint64_t *)(ptr));\ x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
break;\ break;\
default:\ default:\
abort();\ abort();\