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e2be04c7f9
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
233 lines
6.8 KiB
C
233 lines
6.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/* registers.h: register frame declarations
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*
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* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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/*
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* notes:
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*
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* (1) that the members of all these structures are carefully aligned to permit
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* usage of STD/STDF instructions
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*
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* (2) if you change these structures, you must change the code in
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* arch/frvnommu/kernel/{break.S,entry.S,switch_to.S,gdb-stub.c}
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*
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*
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* the kernel stack space block looks like this:
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*
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* +0x2000 +----------------------
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* | union {
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* | struct frv_frame0 {
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* | struct user_context {
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* | struct user_int_regs
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* | struct user_fpmedia_regs
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* | }
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* | struct frv_debug_regs
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* | }
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* | struct pt_regs [user exception]
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* | }
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* +---------------------- <-- __kernel_frame0_ptr (maybe GR28)
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* |
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* | kernel stack
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* |
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* |......................
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* | struct pt_regs [kernel exception]
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* |...................... <-- __kernel_frame0_ptr (maybe GR28)
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* |
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* | kernel stack
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* |
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* |...................... <-- stack pointer (GR1)
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* |
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* | unused stack space
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* |
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* +----------------------
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* | struct thread_info
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* +0x0000 +---------------------- <-- __current_thread_info (GR15);
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*
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* note that GR28 points to the current exception frame
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*/
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#ifndef _ASM_REGISTERS_H
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#define _ASM_REGISTERS_H
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#ifndef __ASSEMBLY__
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#define __OFFSET(X,N) ((X)+(N)*4)
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#define __OFFSETC(X,N) xxxxxxxxxxxxxxxxxxxxxxxx
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#else
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#define __OFFSET(X,N) ((X)+(N)*4)
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#define __OFFSETC(X,N) ((X)+(N))
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#endif
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/*****************************************************************************/
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/*
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* Exception/Interrupt frame
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* - held on kernel stack
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* - 8-byte aligned on stack (old SP is saved in frame)
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* - GR0 is fixed 0, so we don't save it
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*/
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#ifndef __ASSEMBLY__
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struct pt_regs {
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unsigned long psr; /* Processor Status Register */
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unsigned long isr; /* Integer Status Register */
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unsigned long ccr; /* Condition Code Register */
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unsigned long cccr; /* Condition Code for Conditional Insns Register */
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unsigned long lr; /* Link Register */
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unsigned long lcr; /* Loop Count Register */
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unsigned long pc; /* Program Counter Register */
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unsigned long __status; /* exception status */
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unsigned long syscallno; /* syscall number or -1 */
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unsigned long orig_gr8; /* original syscall arg #1 */
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unsigned long gner0;
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unsigned long gner1;
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unsigned long long iacc0;
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unsigned long tbr; /* GR0 is fixed zero, so we use this for TBR */
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unsigned long sp; /* GR1: USP/KSP */
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unsigned long fp; /* GR2: FP */
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unsigned long gr3;
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unsigned long gr4;
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unsigned long gr5;
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unsigned long gr6;
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unsigned long gr7; /* syscall number */
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unsigned long gr8; /* 1st syscall param; syscall return */
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unsigned long gr9; /* 2nd syscall param */
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unsigned long gr10; /* 3rd syscall param */
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unsigned long gr11; /* 4th syscall param */
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unsigned long gr12; /* 5th syscall param */
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unsigned long gr13; /* 6th syscall param */
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unsigned long gr14;
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unsigned long gr15;
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unsigned long gr16; /* GP pointer */
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unsigned long gr17; /* small data */
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unsigned long gr18; /* PIC/PID */
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unsigned long gr19;
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unsigned long gr20;
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unsigned long gr21;
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unsigned long gr22;
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unsigned long gr23;
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unsigned long gr24;
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unsigned long gr25;
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unsigned long gr26;
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unsigned long gr27;
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struct pt_regs *next_frame; /* GR28 - next exception frame */
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unsigned long gr29; /* GR29 - OS reserved */
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unsigned long gr30; /* GR30 - OS reserved */
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unsigned long gr31; /* GR31 - OS reserved */
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} __attribute__((aligned(8)));
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#endif
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#define REG__STATUS_STEP 0x00000001 /* - reenable single stepping on return */
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#define REG__STATUS_STEPPED 0x00000002 /* - single step caused exception */
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#define REG__STATUS_BROKE 0x00000004 /* - BREAK insn caused exception */
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#define REG__STATUS_SYSC_ENTRY 0x40000000 /* - T on syscall entry (ptrace.c only) */
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#define REG__STATUS_SYSC_EXIT 0x80000000 /* - T on syscall exit (ptrace.c only) */
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#define REG_GR(R) __OFFSET(REG_GR0, (R))
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#define REG_SP REG_GR(1)
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#define REG_FP REG_GR(2)
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#define REG_PREV_FRAME REG_GR(28) /* previous exception frame pointer (old gr28 value) */
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#define REG_CURR_TASK REG_GR(29) /* current task */
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/*****************************************************************************/
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/*
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* debugging registers
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*/
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#ifndef __ASSEMBLY__
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struct frv_debug_regs
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{
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unsigned long dcr;
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unsigned long ibar[4] __attribute__((aligned(8)));
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unsigned long dbar[4] __attribute__((aligned(8)));
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unsigned long dbdr[4][4] __attribute__((aligned(8)));
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unsigned long dbmr[4][4] __attribute__((aligned(8)));
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} __attribute__((aligned(8)));
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#endif
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/*****************************************************************************/
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/*
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* userspace registers
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*/
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#ifndef __ASSEMBLY__
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struct user_int_regs
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{
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/* integer registers
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* - up to gr[31] mirror pt_regs
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* - total size must be multiple of 8 bytes
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*/
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unsigned long psr; /* Processor Status Register */
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unsigned long isr; /* Integer Status Register */
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unsigned long ccr; /* Condition Code Register */
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unsigned long cccr; /* Condition Code for Conditional Insns Register */
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unsigned long lr; /* Link Register */
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unsigned long lcr; /* Loop Count Register */
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unsigned long pc; /* Program Counter Register */
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unsigned long __status; /* exception status */
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unsigned long syscallno; /* syscall number or -1 */
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unsigned long orig_gr8; /* original syscall arg #1 */
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unsigned long gner[2];
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unsigned long long iacc[1];
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union {
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unsigned long tbr;
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unsigned long gr[64];
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};
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};
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struct user_fpmedia_regs
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{
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/* FP/Media registers */
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unsigned long fr[64];
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unsigned long fner[2];
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unsigned long msr[2];
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unsigned long acc[8];
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unsigned char accg[8];
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unsigned long fsr[1];
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};
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struct user_context
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{
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struct user_int_regs i;
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struct user_fpmedia_regs f;
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/* we provide a context extension so that we can save the regs for CPUs that
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* implement many more of Fujitsu's lavish register spec
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*/
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void *extension;
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} __attribute__((aligned(8)));
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struct frv_frame0 {
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union {
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struct pt_regs regs;
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struct user_context uc;
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};
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struct frv_debug_regs debug;
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} __attribute__((aligned(32)));
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#endif
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#define __INT_GR(R) __OFFSET(__INT_GR0, (R))
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#define __FPMEDIA_FR(R) __OFFSET(__FPMEDIA_FR0, (R))
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#define __FPMEDIA_FNER(R) __OFFSET(__FPMEDIA_FNER0, (R))
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#define __FPMEDIA_MSR(R) __OFFSET(__FPMEDIA_MSR0, (R))
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#define __FPMEDIA_ACC(R) __OFFSET(__FPMEDIA_ACC0, (R))
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#define __FPMEDIA_ACCG(R) __OFFSETC(__FPMEDIA_ACCG0, (R))
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#define __FPMEDIA_FSR(R) __OFFSET(__FPMEDIA_FSR0, (R))
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#define __THREAD_GR(R) __OFFSET(__THREAD_GR16, (R) - 16)
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#endif /* _ASM_REGISTERS_H */
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