[deliverable/linux.git] / arch / x86 / include / asm / mpx.h

#ifndef _ASM_X86_MPX_H
#define _ASM_X86_MPX_H

#include <linux/types.h>
#include <asm/ptrace.h>
#include <asm/insn.h>

#ifdef CONFIG_X86_64

/* upper 28 bits [47:20] of the virtual address in 64-bit used to
 * index into bounds directory (BD).
 */
#define MPX_BD_ENTRY_OFFSET	28
#define MPX_BD_ENTRY_SHIFT	3
/* bits [19:3] of the virtual address in 64-bit used to index into
 * bounds table (BT).
 */
#define MPX_BT_ENTRY_OFFSET	17
#define MPX_BT_ENTRY_SHIFT	5
#define MPX_IGN_BITS		3

#else

#define MPX_BD_ENTRY_OFFSET	20
#define MPX_BD_ENTRY_SHIFT	2
#define MPX_BT_ENTRY_OFFSET	10
#define MPX_BT_ENTRY_SHIFT	4
#define MPX_IGN_BITS		2

#endif

#define MPX_BD_SIZE_BYTES (1UL<<(MPX_BD_ENTRY_OFFSET+MPX_BD_ENTRY_SHIFT))
#define MPX_BT_SIZE_BYTES (1UL<<(MPX_BT_ENTRY_OFFSET+MPX_BT_ENTRY_SHIFT))

#define MPX_BNDSTA_ERROR_CODE	0x3

#ifdef CONFIG_X86_INTEL_MPX
siginfo_t *mpx_generate_siginfo(struct pt_regs *regs,
				struct xsave_struct *xsave_buf);
#else
static inline siginfo_t *mpx_generate_siginfo(struct pt_regs *regs,
					      struct xsave_struct *xsave_buf)
{
	return NULL;
}
#endif /* CONFIG_X86_INTEL_MPX */

#endif /* _ASM_X86_MPX_H */
Commit	Line	Data
57319d80 QR	1	#ifndef _ASM_X86_MPX_H
	2	#define _ASM_X86_MPX_H
	3
	4	#include <linux/types.h>
	5	#include <asm/ptrace.h>
fcc7ffd6	6	#include <asm/insn.h>
57319d80 QR	7
	8	#ifdef CONFIG_X86_64
	9
	10	/* upper 28 bits [47:20] of the virtual address in 64-bit used to
	11	* index into bounds directory (BD).
	12	*/
	13	#define MPX_BD_ENTRY_OFFSET 28
	14	#define MPX_BD_ENTRY_SHIFT 3
	15	/* bits [19:3] of the virtual address in 64-bit used to index into
	16	* bounds table (BT).
	17	*/
	18	#define MPX_BT_ENTRY_OFFSET 17
	19	#define MPX_BT_ENTRY_SHIFT 5
	20	#define MPX_IGN_BITS 3
	21
	22	#else
	23
	24	#define MPX_BD_ENTRY_OFFSET 20
	25	#define MPX_BD_ENTRY_SHIFT 2
	26	#define MPX_BT_ENTRY_OFFSET 10
	27	#define MPX_BT_ENTRY_SHIFT 4
	28	#define MPX_IGN_BITS 2
	29
	30	#endif
	31
	32	#define MPX_BD_SIZE_BYTES (1UL<<(MPX_BD_ENTRY_OFFSET+MPX_BD_ENTRY_SHIFT))
	33	#define MPX_BT_SIZE_BYTES (1UL<<(MPX_BT_ENTRY_OFFSET+MPX_BT_ENTRY_SHIFT))
	34
	35	#define MPX_BNDSTA_ERROR_CODE 0x3
	36
fcc7ffd6 DH	37	#ifdef CONFIG_X86_INTEL_MPX
	38	siginfo_t mpx_generate_siginfo(struct pt_regs regs,
	39	struct xsave_struct *xsave_buf);
	40	#else
	41	static inline siginfo_t mpx_generate_siginfo(struct pt_regs regs,
	42	struct xsave_struct *xsave_buf)
	43	{
	44	return NULL;
	45	}
	46	#endif /* CONFIG_X86_INTEL_MPX */
	47
57319d80	48	#endif /* _ASM_X86_MPX_H */