cregit-Linux how code gets into the kernel

Release 4.14 arch/tile/include/uapi/asm/ptrace.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * Copyright 2010 Tilera Corporation. All Rights Reserved.
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   as published by the Free Software Foundation, version 2.
 *
 *   This program is distributed in the hope that it will be useful, but
 *   WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *   NON INFRINGEMENT.  See the GNU General Public License for
 *   more details.
 */

#ifndef _UAPI_ASM_TILE_PTRACE_H

#define _UAPI_ASM_TILE_PTRACE_H

#include <arch/chip.h>
#include <arch/abi.h>

/* These must match struct pt_regs, below. */
#if CHIP_WORD_SIZE() == 32

#define PTREGS_OFFSET_REG(n)    ((n)*4)
#else

#define PTREGS_OFFSET_REG(n)    ((n)*8)
#endif

#define PTREGS_OFFSET_BASE      0

#define PTREGS_OFFSET_TP        PTREGS_OFFSET_REG(53)

#define PTREGS_OFFSET_SP        PTREGS_OFFSET_REG(54)

#define PTREGS_OFFSET_LR        PTREGS_OFFSET_REG(55)

#define PTREGS_NR_GPRS          56

#define PTREGS_OFFSET_PC        PTREGS_OFFSET_REG(56)

#define PTREGS_OFFSET_EX1       PTREGS_OFFSET_REG(57)

#define PTREGS_OFFSET_FAULTNUM  PTREGS_OFFSET_REG(58)

#define PTREGS_OFFSET_ORIG_R0   PTREGS_OFFSET_REG(59)

#define PTREGS_OFFSET_FLAGS     PTREGS_OFFSET_REG(60)
#if CHIP_HAS_CMPEXCH()

#define PTREGS_OFFSET_CMPEXCH   PTREGS_OFFSET_REG(61)
#endif

#define PTREGS_SIZE             PTREGS_OFFSET_REG(64)


#ifndef __ASSEMBLY__

#ifndef __KERNEL__
/* Provide appropriate length type to userspace regardless of -m32/-m64. */

typedef uint_reg_t pt_reg_t;
#endif

/*
 * This struct defines the way the registers are stored on the stack during a
 * system call or exception.  "struct sigcontext" has the same shape.
 */

struct pt_regs {
	union {
		/* Saved main processor registers; 56..63 are special. */
		
pt_reg_t regs[56];
		struct {
			
pt_reg_t __regs[53];
			
pt_reg_t tp;		/* aliases regs[TREG_TP] */
			
pt_reg_t sp;		/* aliases regs[TREG_SP] */
			
pt_reg_t lr;		/* aliases regs[TREG_LR] */
		};
	};

	/* Saved special registers. */
	
pt_reg_t pc;		/* stored in EX_CONTEXT_K_0 */
	
pt_reg_t ex1;		/* stored in EX_CONTEXT_K_1 (PL and ICS bit) */
	
pt_reg_t faultnum;	/* fault number (INT_SWINT_1 for syscall) */
	
pt_reg_t orig_r0;	/* r0 at syscall entry, else zero */
	
pt_reg_t flags;		/* flags (see below) */
#if !CHIP_HAS_CMPEXCH()
	
pt_reg_t pad[3];
#else
	
pt_reg_t cmpexch;	/* value of CMPEXCH_VALUE SPR at interrupt */
	
pt_reg_t pad[2];
#endif
};

#endif /* __ASSEMBLY__ */


#define PTRACE_GETREGS		12

#define PTRACE_SETREGS		13

#define PTRACE_GETFPREGS	14

#define PTRACE_SETFPREGS	15

/* Support TILE-specific ptrace options, with events starting at 16. */

#define PTRACE_EVENT_MIGRATE	16

#define PTRACE_O_TRACEMIGRATE	(1 << PTRACE_EVENT_MIGRATE)

/*
 * Flag bits in pt_regs.flags that are part of the ptrace API.
 * We start our numbering higher up to avoid confusion with the
 * non-ABI kernel-internal values that use the low 16 bits.
 */

#define PT_FLAGS_COMPAT		0x10000  
/* process is an -m32 compat process */

#endif /* _UAPI_ASM_TILE_PTRACE_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
David Howells20389.04%120.00%
Chris Metcalf2410.53%360.00%
Greg Kroah-Hartman10.44%120.00%
Total228100.00%5100.00%
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