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make a bound checking more compatible with Windows 64

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On Linux 32:   sizeof(long)=32 == sizeof(void *)=32
    on Linux 64:   sizeof(long)=64 == sizeof(void *)=64
    on Windows 64: sizeof(long)=32 != sizeof(void *)=64
This commit is contained in:
seyko 2015-03-26 07:47:45 +03:00
parent 548a55eda5
commit acef4ff244
6 changed files with 53 additions and 53 deletions
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14
i386-gen.c
View File

@ -99,7 +99,7 @@ ST_DATA const int reg_classes[NB_REGS] = {
static unsigned long func_sub_sp_offset;
static int func_ret_sub;
#ifdef CONFIG_TCC_BCHECK
static unsigned long func_bound_offset;
static addr_t func_bound_offset;
#endif
/* XXX: make it faster ? */
@ -587,16 +587,16 @@ ST_FUNC void gfunc_prolog(CType *func_type)
/* generate function epilog */
ST_FUNC void gfunc_epilog(void)
{
int v, saved_ind;
addr_t v, saved_ind;
#ifdef CONFIG_TCC_BCHECK
if (tcc_state->do_bounds_check
&& func_bound_offset != lbounds_section->data_offset) {
int saved_ind;
int *bounds_ptr;
addr_t saved_ind;
addr_t *bounds_ptr;
Sym *sym_data;
/* add end of table info */
bounds_ptr = section_ptr_add(lbounds_section, sizeof(int));
bounds_ptr = section_ptr_add(lbounds_section, sizeof(addr_t));
*bounds_ptr = 0;
/* generate bound local allocation */
saved_ind = ind;
@ -1058,8 +1058,8 @@ ST_FUNC void gen_bounded_ptr_add(void)
also tested */
ST_FUNC void gen_bounded_ptr_deref(void)
{
int func;
int size, align;
addr_t func;
addr_t size, align;
Elf32_Rel *rel;
Sym *sym;

76
lib/bcheck.c
View File

@ -69,15 +69,15 @@
#define INVALID_SIZE 0
typedef struct BoundEntry {
unsigned long start;
unsigned long size;
size_t start;
size_t size;
struct BoundEntry *next;
unsigned long is_invalid; /* true if pointers outside region are invalid */
size_t is_invalid; /* true if pointers outside region are invalid */
} BoundEntry;
/* external interface */
void __bound_init(void);
void __bound_new_region(void *p, unsigned long size);
void __bound_new_region(void *p, size_t size);
int __bound_delete_region(void *p);
#define FASTCALL __attribute__((regparm(3)))
@ -104,7 +104,7 @@ extern char __bounds_start; /* start of static bounds table */
const char *__bound_error_msg;
/* runtime error output */
extern void rt_error(unsigned long pc, const char *fmt, ...);
extern void rt_error(size_t pc, const char *fmt, ...);
#ifdef BOUND_STATIC
static BoundEntry *__bound_t1[BOUND_T1_SIZE]; /* page table */
@ -116,12 +116,12 @@ static BoundEntry *__bound_invalid_t2; /* invalid page, for invalid pointers */
static BoundEntry *__bound_find_region(BoundEntry *e1, void *p)
{
unsigned long addr, tmp;
size_t addr, tmp;
BoundEntry *e;
e = e1;
while (e != NULL) {
addr = (unsigned long)p;
addr = (size_t)p;
addr -= e->start;
if (addr <= e->size) {
/* put region at the head */
@ -156,9 +156,9 @@ static void bound_alloc_error(void)
/* return '(p + offset)' for pointer arithmetic (a pointer can reach
the end of a region in this case */
void * FASTCALL __bound_ptr_add(void *p, int offset)
void * FASTCALL __bound_ptr_add(void *p, size_t offset)
{
unsigned long addr = (unsigned long)p;
size_t addr = (size_t)p;
BoundEntry *e;
#if defined(BOUND_DEBUG)
printf("add: 0x%x %d\n", (int)p, offset);
@ -171,7 +171,7 @@ void * FASTCALL __bound_ptr_add(void *p, int offset)
addr -= e->start;
if (addr > e->size) {
e = __bound_find_region(e, p);
addr = (unsigned long)p - e->start;
addr = (size_t)p - e->start;
}
addr += offset;
if (addr > e->size)
@ -184,7 +184,7 @@ void * FASTCALL __bound_ptr_add(void *p, int offset)
#define BOUND_PTR_INDIR(dsize) \
void * FASTCALL __bound_ptr_indir ## dsize (void *p, int offset) \
{ \
unsigned long addr = (unsigned long)p; \
size_t addr = (size_t)p; \
BoundEntry *e; \
\
e = __bound_t1[addr >> (BOUND_T2_BITS + BOUND_T3_BITS)]; \
@ -194,7 +194,7 @@ void * FASTCALL __bound_ptr_indir ## dsize (void *p, int offset) \
addr -= e->start; \
if (addr > e->size) { \
e = __bound_find_region(e, p); \
addr = (unsigned long)p - e->start; \
addr = (size_t)p - e->start; \
} \
addr += offset + dsize; \
if (addr > e->size) \
@ -212,13 +212,13 @@ BOUND_PTR_INDIR(16)
/* return the frame pointer of the caller */
#define GET_CALLER_FP(fp)\
{\
fp = (unsigned long)__builtin_frame_address(1);\
fp = (size_t)__builtin_frame_address(1);\
}
/* called when entering a function to add all the local regions */
void FASTCALL __bound_local_new(void *p1)
{
unsigned long addr, size, fp, *p = p1;
size_t addr, size, fp, *p = p1;
GET_CALLER_FP(fp);
for(;;) {
addr = p[0];
@ -234,7 +234,7 @@ void FASTCALL __bound_local_new(void *p1)
/* called when leaving a function to delete all the local regions */
void FASTCALL __bound_local_delete(void *p1)
{
unsigned long addr, fp, *p = p1;
size_t addr, fp, *p = p1;
GET_CALLER_FP(fp);
for(;;) {
addr = p[0];
@ -290,11 +290,11 @@ static inline BoundEntry *get_page(int index)
}
/* mark a region as being invalid (can only be used during init) */
static void mark_invalid(unsigned long addr, unsigned long size)
static void mark_invalid(size_t addr, size_t size)
{
unsigned long start, end;
size_t start, end;
BoundEntry *page;
int t1_start, t1_end, i, j, t2_start, t2_end;
size_t t1_start, t1_end, i, j, t2_start, t2_end;
start = addr;
end = addr + size;
@ -347,7 +347,7 @@ void __bound_init(void)
{
int i;
BoundEntry *page;
unsigned long start, size;
size_t start, size;
/* int *p; */
__PTRDIFF_TYPE__ *p; /* 32 or 64 bit integer */
@ -376,7 +376,7 @@ void __bound_init(void)
__bound_invalid_t2 = page;
/* invalid pointer zone */
start = (unsigned long)INVALID_POINTER & ~(BOUND_T23_SIZE - 1);
start = (size_t)INVALID_POINTER & ~(BOUND_T23_SIZE - 1);
size = BOUND_T23_SIZE;
mark_invalid(start, size);
@ -407,7 +407,7 @@ void __bound_init(void)
* (b) on Linux >= v3.3, the alternative is to read
* start_brk from /proc/self/stat
*/
start = (unsigned long)sbrk(0);
start = (size_t)sbrk(0);
size = 128 * 0x100000;
mark_invalid(start, size);
#endif
@ -433,7 +433,7 @@ void __bound_exit(void)
}
static inline void add_region(BoundEntry *e,
unsigned long start, unsigned long size)
size_t start, size_t size)
{
BoundEntry *e1;
if (e->start == 0) {
@ -453,13 +453,13 @@ static inline void add_region(BoundEntry *e,
}
/* create a new region. It should not already exist in the region list */
void __bound_new_region(void *p, unsigned long size)
void __bound_new_region(void *p, size_t size)
{
unsigned long start, end;
size_t start, end;
BoundEntry *page, *e, *e2;
int t1_start, t1_end, i, t2_start, t2_end;
size_t t1_start, t1_end, i, t2_start, t2_end;
start = (unsigned long)p;
start = (size_t)p;
end = start + size;
t1_start = start >> (BOUND_T2_BITS + BOUND_T3_BITS);
t1_end = end >> (BOUND_T2_BITS + BOUND_T3_BITS);
@ -519,12 +519,12 @@ void __bound_new_region(void *p, unsigned long size)
/* delete a region */
static inline void delete_region(BoundEntry *e,
void *p, unsigned long empty_size)
void *p, size_t empty_size)
{
unsigned long addr;
size_t addr;
BoundEntry *e1;
addr = (unsigned long)p;
addr = (size_t)p;
addr -= e->start;
if (addr <= e->size) {
/* region found is first one */
@ -548,7 +548,7 @@ static inline void delete_region(BoundEntry *e,
/* region not found: do nothing */
if (e == NULL)
break;
addr = (unsigned long)p - e->start;
addr = (size_t)p - e->start;
if (addr <= e->size) {
/* found: remove entry */
e1->next = e->next;
@ -563,11 +563,11 @@ static inline void delete_region(BoundEntry *e,
/* return non zero if error */
int __bound_delete_region(void *p)
{
unsigned long start, end, addr, size, empty_size;
size_t start, end, addr, size, empty_size;
BoundEntry *page, *e, *e2;
int t1_start, t1_end, t2_start, t2_end, i;
size_t t1_start, t1_end, t2_start, t2_end, i;
start = (unsigned long)p;
start = (size_t)p;
t1_start = start >> (BOUND_T2_BITS + BOUND_T3_BITS);
t2_start = (start >> (BOUND_T3_BITS - BOUND_E_BITS)) &
((BOUND_T2_SIZE - 1) << BOUND_E_BITS);
@ -579,7 +579,7 @@ int __bound_delete_region(void *p)
if (addr > e->size)
e = __bound_find_region(e, p);
/* test if invalid region */
if (e->size == EMPTY_SIZE || (unsigned long)p != e->start)
if (e->size == EMPTY_SIZE || (size_t)p != e->start)
return -1;
/* compute the size we put in invalid regions */
if (e->is_invalid)
@ -638,9 +638,9 @@ int __bound_delete_region(void *p)
/* return the size of the region starting at p, or EMPTY_SIZE if non
existent region. */
static unsigned long get_region_size(void *p)
static size_t get_region_size(void *p)
{
unsigned long addr = (unsigned long)p;
size_t addr = (size_t)p;
BoundEntry *e;
e = __bound_t1[addr >> (BOUND_T2_BITS + BOUND_T3_BITS)];
@ -650,7 +650,7 @@ static unsigned long get_region_size(void *p)
addr -= e->start;
if (addr > e->size)
e = __bound_find_region(e, p);
if (e->start != (unsigned long)p)
if (e->start != (size_t)p)
return EMPTY_SIZE;
return e->size;
}
@ -764,7 +764,7 @@ void __bound_free(void *ptr, const void *caller)
void *__bound_realloc(void *ptr, size_t size, const void *caller)
{
void *ptr1;
int old_size;
size_t old_size;
if (size == 0) {
__bound_free(ptr, caller);

4
libtcc.c
View File

@ -388,9 +388,9 @@ ST_FUNC void section_realloc(Section *sec, unsigned long new_size)
/* reserve at least 'size' bytes in section 'sec' from
sec->data_offset. */
ST_FUNC void *section_ptr_add(Section *sec, unsigned long size)
ST_FUNC void *section_ptr_add(Section *sec, size_t size)
{
unsigned long offset, offset1;
size_t offset, offset1;
offset = sec->data_offset;
offset1 = offset + size;

2
tccelf.c
View File

@ -1568,7 +1568,7 @@ static int tcc_add_support(TCCState *s1, const char *filename)
ST_FUNC void tcc_add_bcheck(TCCState *s1)
{
#ifdef CONFIG_TCC_BCHECK
unsigned long *ptr;
addr_t *ptr;
Section *init_section;
unsigned char *pinit;
int sym_index;

8
tccgen.c
View File

@ -5781,11 +5781,11 @@ static void decl_initializer_alloc(CType *type, AttributeDef *ad, int r,
/* XXX: currently, since we do only one pass, we cannot track
'&' operators, so we add only arrays */
if (tcc_state->do_bounds_check && (type->t & VT_ARRAY)) {
unsigned long *bounds_ptr;
addr_t *bounds_ptr;
/* add padding between regions */
loc--;
/* then add local bound info */
bounds_ptr = section_ptr_add(lbounds_section, 2 * sizeof(unsigned long));
bounds_ptr = section_ptr_add(lbounds_section, 2 * sizeof(addr_t));
bounds_ptr[0] = addr;
bounds_ptr[1] = size;
}
@ -5892,11 +5892,11 @@ static void decl_initializer_alloc(CType *type, AttributeDef *ad, int r,
/* handles bounds now because the symbol must be defined
before for the relocation */
if (tcc_state->do_bounds_check) {
unsigned long *bounds_ptr;
addr_t *bounds_ptr;
greloc(bounds_section, sym, bounds_section->data_offset, R_DATA_PTR);
/* then add global bound info */
bounds_ptr = section_ptr_add(bounds_section, 2 * sizeof(long));
bounds_ptr = section_ptr_add(bounds_section, 2 * sizeof(addr_t));
bounds_ptr[0] = 0; /* relocated */
bounds_ptr[1] = size;
}

2
tccrun.c
View File

@ -110,7 +110,7 @@ LIBTCCAPI int tcc_run(TCCState *s1, int argc, char **argv)
if (s1->do_bounds_check) {
void (*bound_init)(void);
void (*bound_exit)(void);
void (*bound_new_region)(void *p, unsigned long size);
void (*bound_new_region)(void *p, addr_t size);
int (*bound_delete_region)(void *p);
int i;