0707ad30d1
This commit is primarily changes caused by reviewing "sparse" and "checkpatch" output on our sources, so is somewhat noisy, since things like "printk() -> pr_err()" (or whatever) throughout the codebase tend to get tedious to read. Rather than trying to tease apart precisely which things changed due to which type of code review, this commit includes various cleanups in the code: - sparse: Add declarations in headers for globals. - sparse: Fix __user annotations. - sparse: Using gfp_t consistently instead of int. - sparse: removing functions not actually used. - checkpatch: Clean up printk() warnings by using pr_info(), etc.; also avoid partial-line printks except in bootup code. - checkpatch: Use exposed structs rather than typedefs. - checkpatch: Change some C99 comments to C89 comments. In addition, a couple of minor other changes are rolled in to this commit: - Add support for a "raise" instruction to cause SIGFPE, etc., to be raised. - Remove some compat code that is unnecessary when we fully eliminate some of the deprecated syscalls from the generic syscall ABI. - Update the tile_defconfig to reflect current config contents. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/*
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* Copyright 2010 Tilera Corporation. All Rights Reserved.
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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, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*/
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/**
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* @file
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*
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* ABI-related register definitions helpful when writing assembly code.
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*/
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#ifndef __ARCH_ABI_H__
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#define __ARCH_ABI_H__
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#include <arch/chip.h>
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/* Registers 0 - 55 are "normal", but some perform special roles. */
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#define TREG_FP 52 /**< Frame pointer. */
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#define TREG_TP 53 /**< Thread pointer. */
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#define TREG_SP 54 /**< Stack pointer. */
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#define TREG_LR 55 /**< Link to calling function PC. */
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/** Index of last normal general-purpose register. */
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#define TREG_LAST_GPR 55
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/* Registers 56 - 62 are "special" network registers. */
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#define TREG_SN 56 /**< Static network access. */
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#define TREG_IDN0 57 /**< IDN demux 0 access. */
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#define TREG_IDN1 58 /**< IDN demux 1 access. */
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#define TREG_UDN0 59 /**< UDN demux 0 access. */
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#define TREG_UDN1 60 /**< UDN demux 1 access. */
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#define TREG_UDN2 61 /**< UDN demux 2 access. */
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#define TREG_UDN3 62 /**< UDN demux 3 access. */
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/* Register 63 is the "special" zero register. */
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#define TREG_ZERO 63 /**< "Zero" register; always reads as "0". */
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/** By convention, this register is used to hold the syscall number. */
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#define TREG_SYSCALL_NR 10
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/** Name of register that holds the syscall number, for use in assembly. */
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#define TREG_SYSCALL_NR_NAME r10
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/**
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* The ABI requires callers to allocate a caller state save area of
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* this many bytes at the bottom of each stack frame.
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*/
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#ifdef __tile__
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#define C_ABI_SAVE_AREA_SIZE (2 * __SIZEOF_POINTER__)
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#endif
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/**
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* The operand to an 'info' opcode directing the backtracer to not
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* try to find the calling frame.
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*/
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#define INFO_OP_CANNOT_BACKTRACE 2
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#ifndef __ASSEMBLER__
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#if CHIP_WORD_SIZE() > 32
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/** Unsigned type that can hold a register. */
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typedef unsigned long long uint_reg_t;
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/** Signed type that can hold a register. */
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typedef long long int_reg_t;
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/** String prefix to use for printf(). */
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#define INT_REG_FMT "ll"
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#elif !defined(__LP64__) /* avoid confusion with LP64 cross-build tools */
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/** Unsigned type that can hold a register. */
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typedef unsigned long uint_reg_t;
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/** Signed type that can hold a register. */
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typedef long int_reg_t;
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/** String prefix to use for printf(). */
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#define INT_REG_FMT "l"
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#endif
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#endif /* __ASSEMBLER__ */
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#endif /* !__ARCH_ABI_H__ */
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