WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/mips32/src/mm/tlb.c



#include <symtab.h>
#include <synch/spinlock.h>
#include <print.h>
#include <debug.h>
 
static void tlb_refill_fail(istate_t *istate);
static void tlb_invalid_fail(istate_t *istate);
static void tlb_modified_fail(istate_t *istate);
 
static pte_t *find_mapping_and_check(__address badvaddr);
 
static void prepare_entry_lo(entry_lo_t *lo, bool g, bool v, bool d, bool cacheable, __address pfn);
static void prepare_entry_hi(entry_hi_t *hi, asid_t asid, __address addr);

 
/** Process TLB Refill Exception
 *
 * Process TLB Refill Exception.
 *
 * @param istate Interrupted register context.
 */
void tlb_refill(istate_t *istate)
{
    entry_lo_t lo;
    entry_hi_t hi; 
    __address badvaddr;
    pte_t *pte;

    spinlock_unlock(&AS->lock);
    return;
   
fail:
    spinlock_unlock(&AS->lock);
    tlb_refill_fail(istate);
}
 
/** Process TLB Invalid Exception
 *
 * Process TLB Invalid Exception.
 *
 * @param istate Interrupted register context.
 */
void tlb_invalid(istate_t *istate)
{
    tlb_index_t index;
    __address badvaddr;
    entry_lo_t lo;
    entry_hi_t hi;

    spinlock_unlock(&AS->lock);
    return;
   
fail:
    spinlock_unlock(&AS->lock);
    tlb_invalid_fail(istate);
}
 
/** Process TLB Modified Exception
 *
 * Process TLB Modified Exception.
 *
 * @param istate Interrupted register context.
 */
void tlb_modified(istate_t *istate)
{
    tlb_index_t index;
    __address badvaddr;
    entry_lo_t lo;
    entry_hi_t hi;

    spinlock_unlock(&AS->lock);
    return;
   
fail:
    spinlock_unlock(&AS->lock);
    tlb_modified_fail(istate);
}
 
void tlb_refill_fail(istate_t *istate)
{
    char *symbol = "";
    char *sym2 = "";
 
    char *s = get_symtab_entry(istate->epc);
    if (s)
        symbol = s;
    s = get_symtab_entry(istate->ra);
    if (s)
        sym2 = s;
    panic("%X: TLB Refill Exception at %X(%s<-%s)\n", cp0_badvaddr_read(), istate->epc, symbol, sym2);
}
 
 
void tlb_invalid_fail(istate_t *istate)
{
    char *symbol = "";
 
    char *s = get_symtab_entry(istate->epc);
    if (s)
        symbol = s;
    panic("%X: TLB Invalid Exception at %X(%s)\n", cp0_badvaddr_read(), istate->epc, symbol);
}
 
void tlb_modified_fail(istate_t *istate)
{
    char *symbol = "";
 
    char *s = get_symtab_entry(istate->epc);
    if (s)
        symbol = s;
    panic("%X: TLB Modified Exception at %X(%s)\n", cp0_badvaddr_read(), istate->epc, symbol);
}
 
/** Try to find PTE for faulting address
 *
 * Try to find PTE for faulting address.

Rev 831	Rev 958
Line 37...	Line 37...
37	#include <symtab.h>	37	#include <symtab.h>
38	#include <synch/spinlock.h>	38	#include <synch/spinlock.h>
39	#include <print.h>	39	#include <print.h>
40	#include <debug.h>	40	#include <debug.h>
41		41
42	static void tlb_refill_fail(struct exception_regdump *pstate);	42	static void tlb_refill_fail(istate_t *istate);
43	static void tlb_invalid_fail(struct exception_regdump *pstate);	43	static void tlb_invalid_fail(istate_t *istate);
44	static void tlb_modified_fail(struct exception_regdump *pstate);	44	static void tlb_modified_fail(istate_t *istate);
45		45
46	static pte_t *find_mapping_and_check(__address badvaddr);	46	static pte_t *find_mapping_and_check(__address badvaddr);
47		47
48	static void prepare_entry_lo(entry_lo_t *lo, bool g, bool v, bool d, bool cacheable, __address pfn);	48	static void prepare_entry_lo(entry_lo_t *lo, bool g, bool v, bool d, bool cacheable, __address pfn);
49	static void prepare_entry_hi(entry_hi_t *hi, asid_t asid, __address addr);	49	static void prepare_entry_hi(entry_hi_t *hi, asid_t asid, __address addr);
Line 79...	Line 79...
79		79
80	/** Process TLB Refill Exception	80	/** Process TLB Refill Exception
81	*	81	*
82	* Process TLB Refill Exception.	82	* Process TLB Refill Exception.
83	*	83	*
84	* @param pstate Interrupted register context.	84	* @param istate Interrupted register context.
85	*/	85	*/
86	void tlb_refill(struct exception_regdump *pstate)	86	void tlb_refill(istate_t *istate)
87	{	87	{
88	entry_lo_t lo;	88	entry_lo_t lo;
89	entry_hi_t hi;	89	entry_hi_t hi;
90	__address badvaddr;	90	__address badvaddr;
91	pte_t *pte;	91	pte_t *pte;
Line 124...	Line 124...
124	spinlock_unlock(&AS->lock);	124	spinlock_unlock(&AS->lock);
125	return;	125	return;
126		126
127	fail:	127	fail:
128	spinlock_unlock(&AS->lock);	128	spinlock_unlock(&AS->lock);
129	tlb_refill_fail(pstate);	129	tlb_refill_fail(istate);
130	}	130	}
131		131
132	/** Process TLB Invalid Exception	132	/** Process TLB Invalid Exception
133	*	133	*
134	* Process TLB Invalid Exception.	134	* Process TLB Invalid Exception.
135	*	135	*
136	* @param pstate Interrupted register context.	136	* @param istate Interrupted register context.
137	*/	137	*/
138	void tlb_invalid(struct exception_regdump *pstate)	138	void tlb_invalid(istate_t *istate)
139	{	139	{
140	tlb_index_t index;	140	tlb_index_t index;
141	__address badvaddr;	141	__address badvaddr;
142	entry_lo_t lo;	142	entry_lo_t lo;
143	entry_hi_t hi;	143	entry_hi_t hi;
Line 193...	Line 193...
193	spinlock_unlock(&AS->lock);	193	spinlock_unlock(&AS->lock);
194	return;	194	return;
195		195
196	fail:	196	fail:
197	spinlock_unlock(&AS->lock);	197	spinlock_unlock(&AS->lock);
198	tlb_invalid_fail(pstate);	198	tlb_invalid_fail(istate);
199	}	199	}
200		200
201	/** Process TLB Modified Exception	201	/** Process TLB Modified Exception
202	*	202	*
203	* Process TLB Modified Exception.	203	* Process TLB Modified Exception.
204	*	204	*
205	* @param pstate Interrupted register context.	205	* @param istate Interrupted register context.
206	*/	206	*/
207	void tlb_modified(struct exception_regdump *pstate)	207	void tlb_modified(istate_t *istate)
208	{	208	{
209	tlb_index_t index;	209	tlb_index_t index;
210	__address badvaddr;	210	__address badvaddr;
211	entry_lo_t lo;	211	entry_lo_t lo;
212	entry_hi_t hi;	212	entry_hi_t hi;
Line 269...	Line 269...
269	spinlock_unlock(&AS->lock);	269	spinlock_unlock(&AS->lock);
270	return;	270	return;
271		271
272	fail:	272	fail:
273	spinlock_unlock(&AS->lock);	273	spinlock_unlock(&AS->lock);
274	tlb_modified_fail(pstate);	274	tlb_modified_fail(istate);
275	}	275	}
276		276
277	void tlb_refill_fail(struct exception_regdump *pstate)	277	void tlb_refill_fail(istate_t *istate)
278	{	278	{
279	char *symbol = "";	279	char *symbol = "";
280	char *sym2 = "";	280	char *sym2 = "";
281		281
282	char *s = get_symtab_entry(pstate->epc);	282	char *s = get_symtab_entry(istate->epc);
283	if (s)	283	if (s)
284	symbol = s;	284	symbol = s;
285	s = get_symtab_entry(pstate->ra);	285	s = get_symtab_entry(istate->ra);
286	if (s)	286	if (s)
287	sym2 = s;	287	sym2 = s;
288	panic("%X: TLB Refill Exception at %X(%s<-%s)\n", cp0_badvaddr_read(), pstate->epc, symbol, sym2);	288	panic("%X: TLB Refill Exception at %X(%s<-%s)\n", cp0_badvaddr_read(), istate->epc, symbol, sym2);
289	}	289	}
290		290
291		291
292	void tlb_invalid_fail(struct exception_regdump *pstate)	292	void tlb_invalid_fail(istate_t *istate)
293	{	293	{
294	char *symbol = "";	294	char *symbol = "";
295		295
296	char *s = get_symtab_entry(pstate->epc);	296	char *s = get_symtab_entry(istate->epc);
297	if (s)	297	if (s)
298	symbol = s;	298	symbol = s;
299	panic("%X: TLB Invalid Exception at %X(%s)\n", cp0_badvaddr_read(), pstate->epc, symbol);	299	panic("%X: TLB Invalid Exception at %X(%s)\n", cp0_badvaddr_read(), istate->epc, symbol);
300	}	300	}
301		301
302	void tlb_modified_fail(struct exception_regdump *pstate)	302	void tlb_modified_fail(istate_t *istate)
303	{	303	{
304	char *symbol = "";	304	char *symbol = "";
305		305
306	char *s = get_symtab_entry(pstate->epc);	306	char *s = get_symtab_entry(istate->epc);
307	if (s)	307	if (s)
308	symbol = s;	308	symbol = s;
309	panic("%X: TLB Modified Exception at %X(%s)\n", cp0_badvaddr_read(), pstate->epc, symbol);	309	panic("%X: TLB Modified Exception at %X(%s)\n", cp0_badvaddr_read(), istate->epc, symbol);
310	}	310	}
311		311
312	/** Try to find PTE for faulting address	312	/** Try to find PTE for faulting address
313	*	313	*
314	* Try to find PTE for faulting address.	314	* Try to find PTE for faulting address.

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/mips32/src/mm/tlb.c – Rev 831 → 958