[linux-block.git] / arch / powerpc / lib / restart_table.c

#include <asm/interrupt.h>
#include <asm/kprobes.h>

struct soft_mask_table_entry {
	unsigned long start;
	unsigned long end;
};

struct restart_table_entry {
	unsigned long start;
	unsigned long end;
	unsigned long fixup;
};

extern struct soft_mask_table_entry __start___soft_mask_table[];
extern struct soft_mask_table_entry __stop___soft_mask_table[];

extern struct restart_table_entry __start___restart_table[];
extern struct restart_table_entry __stop___restart_table[];

/* Given an address, look for it in the soft mask table */
bool search_kernel_soft_mask_table(unsigned long addr)
{
	struct soft_mask_table_entry *smte = __start___soft_mask_table;

	while (smte < __stop___soft_mask_table) {
		unsigned long start = smte->start;
		unsigned long end = smte->end;

		if (addr >= start && addr < end)
			return true;

		smte++;
	}
	return false;
}
NOKPROBE_SYMBOL(search_kernel_soft_mask_table);

/* Given an address, look for it in the kernel exception table */
unsigned long search_kernel_restart_table(unsigned long addr)
{
	struct restart_table_entry *rte = __start___restart_table;

	while (rte < __stop___restart_table) {
		unsigned long start = rte->start;
		unsigned long end = rte->end;
		unsigned long fixup = rte->fixup;

		if (addr >= start && addr < end)
			return fixup;

		rte++;
	}
	return 0;
}
NOKPROBE_SYMBOL(search_kernel_restart_table);
Commit	Line	Data
f23699c9 NP	1	#include <asm/interrupt.h>
	2	#include <asm/kprobes.h>
	3
325678fd NP	4	struct soft_mask_table_entry {
	5	unsigned long start;
	6	unsigned long end;
	7	};
	8
f23699c9 NP	9	struct restart_table_entry {
	10	unsigned long start;
	11	unsigned long end;
	12	unsigned long fixup;
	13	};
	14
325678fd NP	15	extern struct soft_mask_table_entry __start___soft_mask_table[];
	16	extern struct soft_mask_table_entry __stop___soft_mask_table[];
	17
f23699c9 NP	18	extern struct restart_table_entry __start___restart_table[];
	19	extern struct restart_table_entry __stop___restart_table[];
	20
325678fd NP	21	/* Given an address, look for it in the soft mask table */
	22	bool search_kernel_soft_mask_table(unsigned long addr)
	23	{
	24	struct soft_mask_table_entry *smte = __start___soft_mask_table;
	25
	26	while (smte < __stop___soft_mask_table) {
	27	unsigned long start = smte->start;
	28	unsigned long end = smte->end;
	29
	30	if (addr >= start && addr < end)
	31	return true;
	32
	33	smte++;
	34	}
	35	return false;
	36	}
	37	NOKPROBE_SYMBOL(search_kernel_soft_mask_table);
	38
f23699c9 NP	39	/* Given an address, look for it in the kernel exception table */
	40	unsigned long search_kernel_restart_table(unsigned long addr)
	41	{
	42	struct restart_table_entry *rte = __start___restart_table;
	43
	44	while (rte < __stop___restart_table) {
	45	unsigned long start = rte->start;
	46	unsigned long end = rte->end;
	47	unsigned long fixup = rte->fixup;
	48
	49	if (addr >= start && addr < end)
	50	return fixup;
	51
	52	rte++;
	53	}
	54	return 0;
	55	}
	56	NOKPROBE_SYMBOL(search_kernel_restart_table);