dsemul.c (a9de18eb761f7c1c860964b2e5addc1a35c7e861) dsemul.c (b6ee75ed4fa201873d3a2b32dfce2dbd701a2de4)
1#include <linux/compiler.h>
2#include <linux/mm.h>
3#include <linux/signal.h>
4#include <linux/smp.h>
5
6#include <asm/asm.h>
7#include <asm/bootinfo.h>
8#include <asm/byteorder.h>

--- 84 unchanged lines hidden (view full) ---

93 return SIGBUS;
94
95 err = __put_user(ir, &fr->emul);
96 err |= __put_user((mips_instruction)BREAK_MATH, &fr->badinst);
97 err |= __put_user((mips_instruction)BD_COOKIE, &fr->cookie);
98 err |= __put_user(cpc, &fr->epc);
99
100 if (unlikely(err)) {
1#include <linux/compiler.h>
2#include <linux/mm.h>
3#include <linux/signal.h>
4#include <linux/smp.h>
5
6#include <asm/asm.h>
7#include <asm/bootinfo.h>
8#include <asm/byteorder.h>

--- 84 unchanged lines hidden (view full) ---

93 return SIGBUS;
94
95 err = __put_user(ir, &fr->emul);
96 err |= __put_user((mips_instruction)BREAK_MATH, &fr->badinst);
97 err |= __put_user((mips_instruction)BD_COOKIE, &fr->cookie);
98 err |= __put_user(cpc, &fr->epc);
99
100 if (unlikely(err)) {
101 fpuemustats.errors++;
101 MIPS_FPU_EMU_INC_STATS(errors);
102 return SIGBUS;
103 }
104
105 regs->cp0_epc = (unsigned long) &fr->emul;
106
107 flush_cache_sigtramp((unsigned long)&fr->badinst);
108
109 return SIGILL; /* force out of emulation loop */

--- 21 unchanged lines hidden (view full) ---

131 *
132 * - Is the instruction pointed to by the EPC an BREAK_MATH?
133 * - Is the following memory word the BD_COOKIE?
134 */
135 err = __get_user(insn, &fr->badinst);
136 err |= __get_user(cookie, &fr->cookie);
137
138 if (unlikely(err || (insn != BREAK_MATH) || (cookie != BD_COOKIE))) {
102 return SIGBUS;
103 }
104
105 regs->cp0_epc = (unsigned long) &fr->emul;
106
107 flush_cache_sigtramp((unsigned long)&fr->badinst);
108
109 return SIGILL; /* force out of emulation loop */

--- 21 unchanged lines hidden (view full) ---

131 *
132 * - Is the instruction pointed to by the EPC an BREAK_MATH?
133 * - Is the following memory word the BD_COOKIE?
134 */
135 err = __get_user(insn, &fr->badinst);
136 err |= __get_user(cookie, &fr->cookie);
137
138 if (unlikely(err || (insn != BREAK_MATH) || (cookie != BD_COOKIE))) {
139 fpuemustats.errors++;
139 MIPS_FPU_EMU_INC_STATS(errors);
140 return 0;
141 }
142
143 /*
144 * At this point, we are satisfied that it's a BD emulation trap. Yes,
145 * a user might have deliberately put two malformed and useless
146 * instructions in a row in his program, in which case he's in for a
147 * nasty surprise - the next instruction will be treated as a

--- 20 unchanged lines hidden --- 		140 return 0;
141 }
142
143 /*
144 * At this point, we are satisfied that it's a BD emulation trap. Yes,
145 * a user might have deliberately put two malformed and useless
146 * instructions in a row in his program, in which case he's in for a
147 * nasty surprise - the next instruction will be treated as a

--- 20 unchanged lines hidden ---