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fixed serious ioctl parameter conversion issue - exported type size and align functions

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@239 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-06-15 19:52:54 +00:00
parent e4533c7a8c
commit 2437490100
2 changed files with 78 additions and 77 deletions
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76
thunk.c
View File

@ -29,80 +29,7 @@
#define MAX_STRUCTS 128
/* XXX: make it dynamic */
static StructEntry struct_entries[MAX_STRUCTS];
static inline int thunk_type_size(const argtype *type_ptr, int is_host)
{
int type, size;
const StructEntry *se;
type = *type_ptr;
switch(type) {
case TYPE_CHAR:
return 1;
case TYPE_SHORT:
return 2;
case TYPE_INT:
return 4;
case TYPE_LONGLONG:
case TYPE_ULONGLONG:
return 8;
case TYPE_LONG:
case TYPE_ULONG:
case TYPE_PTRVOID:
case TYPE_PTR:
if (is_host) {
return HOST_LONG_SIZE;
} else {
return TARGET_LONG_SIZE;
}
break;
case TYPE_ARRAY:
size = type_ptr[1];
return size * thunk_type_size(type_ptr + 2, is_host);
case TYPE_STRUCT:
se = struct_entries + type_ptr[1];
return se->size[is_host];
default:
return -1;
}
}
static inline int thunk_type_align(const argtype *type_ptr, int is_host)
{
int type;
const StructEntry *se;
type = *type_ptr;
switch(type) {
case TYPE_CHAR:
return 1;
case TYPE_SHORT:
return 2;
case TYPE_INT:
return 4;
case TYPE_LONGLONG:
case TYPE_ULONGLONG:
return 8;
case TYPE_LONG:
case TYPE_ULONG:
case TYPE_PTRVOID:
case TYPE_PTR:
if (is_host) {
return HOST_LONG_SIZE;
} else {
return TARGET_LONG_SIZE;
}
break;
case TYPE_ARRAY:
return thunk_type_align(type_ptr + 2, is_host);
case TYPE_STRUCT:
se = struct_entries + type_ptr[1];
return se->align[is_host];
default:
return -1;
}
}
StructEntry struct_entries[MAX_STRUCTS];
static inline const argtype *thunk_type_next(const argtype *type_ptr)
{
@ -167,6 +94,7 @@ void thunk_register_struct(int id, const char *name, const argtype *types)
offset += size;
if (align > max_align)
max_align = align;
type_ptr = thunk_type_next(type_ptr);
}
offset = (offset + max_align - 1) & ~(max_align - 1);
se->size[i] = offset;

79
thunk.h
View File

@ -61,15 +61,13 @@
#endif
#ifdef WORDS_BIGENDIAN
#if defined(WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
#define BSWAP_NEEDED
#endif
/* XXX: autoconf */
#define TARGET_I386
#define TARGET_LONG_BITS 32
#if defined(__alpha__) || defined (__ia64__)
#define HOST_LONG_BITS 64
#else
@ -239,6 +237,81 @@ void thunk_register_struct_direct(int id, const char *name, StructEntry *se1);
const argtype *thunk_convert(void *dst, const void *src,
const argtype *type_ptr, int to_host);
extern StructEntry struct_entries[];
static inline int thunk_type_size(const argtype *type_ptr, int is_host)
{
int type, size;
const StructEntry *se;
type = *type_ptr;
switch(type) {
case TYPE_CHAR:
return 1;
case TYPE_SHORT:
return 2;
case TYPE_INT:
return 4;
case TYPE_LONGLONG:
case TYPE_ULONGLONG:
return 8;
case TYPE_LONG:
case TYPE_ULONG:
case TYPE_PTRVOID:
case TYPE_PTR:
if (is_host) {
return HOST_LONG_SIZE;
} else {
return TARGET_LONG_SIZE;
}
break;
case TYPE_ARRAY:
size = type_ptr[1];
return size * thunk_type_size(type_ptr + 2, is_host);
case TYPE_STRUCT:
se = struct_entries + type_ptr[1];
return se->size[is_host];
default:
return -1;
}
}
static inline int thunk_type_align(const argtype *type_ptr, int is_host)
{
int type;
const StructEntry *se;
type = *type_ptr;
switch(type) {
case TYPE_CHAR:
return 1;
case TYPE_SHORT:
return 2;
case TYPE_INT:
return 4;
case TYPE_LONGLONG:
case TYPE_ULONGLONG:
return 8;
case TYPE_LONG:
case TYPE_ULONG:
case TYPE_PTRVOID:
case TYPE_PTR:
if (is_host) {
return HOST_LONG_SIZE;
} else {
return TARGET_LONG_SIZE;
}
break;
case TYPE_ARRAY:
return thunk_type_align(type_ptr + 2, is_host);
case TYPE_STRUCT:
se = struct_entries + type_ptr[1];
return se->align[is_host];
default:
return -1;
}
}
unsigned int target_to_host_bitmask(unsigned int x86_mask,
bitmask_transtbl * trans_tbl);
unsigned int host_to_target_bitmask(unsigned int alpha_mask,