Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759618AbZCRVx7 (ORCPT ); Wed, 18 Mar 2009 17:53:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758354AbZCRVnr (ORCPT ); Wed, 18 Mar 2009 17:43:47 -0400 Received: from 178-47-31-89.wifiinternet.cz ([89.31.47.178]:54475 "EHLO monstr.eu" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1756989AbZCRVnp (ORCPT ); Wed, 18 Mar 2009 17:43:45 -0400 From: monstr@monstr.eu To: linux-kernel@vger.kernel.org Cc: john.williams@petalogix.com, Michal Simek Subject: [PATCH 53/57] microblaze_v7: string.h thread_info.h Date: Wed, 18 Mar 2009 21:31:20 +0100 Message-Id: X-Mailer: git-send-email 1.5.5.1 In-Reply-To: <15f6f10873f7c6f4f3b06f9d4d5af3ee9714f873.1237407249.git.monstr@monstr.eu> References: <1237408284-8674-1-git-send-email-monstr@monstr.eu> <0168f03c96e9479ede695a9859c8a0691baa8ef3.1237407249.git.monstr@monstr.eu> <4b5aee01d11fc790c7842838ea63a82ee3273003.1237407249.git.monstr@monstr.eu> <5f8b2a60496983f572ef6d3b4e2f986c167a8336.1237407249.git.monstr@monstr.eu> <20fd42a1e8837c7352d35d157aa3393e88152c32.1237407249.git.monstr@monstr.eu> <2f48efc353c11dfdfc7b052bdfe052b71c09ab23.1237407249.git.monstr@monstr.eu> <58cf06c85e07477170677b72ce3437af10476bec.1237407249.git.monstr@monstr.eu> <20227d6f2615060d6560785090513e251cbe2654.1237407249.git.monstr@monstr.eu> <69ef4f976d86c870a97fbe4974c242c74acc477d.1237407249.git.monstr@monstr.eu> <1477ec41e7ba0ec847a064e1f8e422dc2a5dcc9f.1237407249.git.monstr@monstr.eu> <75127eae09c978220d452d92f95763dde24f1d52.1237407249.git.monstr@monstr.eu> <644f08d7f8cd338e606ed703e221914f75588fb5.1237407249.git.monstr@monstr.eu> <6d19f608a4ba3e7718aa55794c2845f19b5ed5e2.1237407249.git.monstr@monstr.eu> <039bc2fea33d23a3e7d2d85ac6fb275b8d21b5ed.1237407249.git.monstr@monstr.eu> <513d4067a84be1ecb47577e1edf131d2b3572808.1237407249.git.monstr@monstr.eu> <5c66d0329884feb553ae745584f6db589a892eb1.1237407249.git.monstr@monstr.eu> <72b06b8fa7b051005ebfa5c23c53a40d6a27f94a.1237407249.git.monstr@monstr.eu> <99fdae6e9b1da3ae5e2d3ebc841d1afdc694dfae.1237407249.git.monstr@monstr.eu> <29d86e7cd1124e596c9dde627f397ca98dccf572.1237407249.git.monstr@monstr.eu> <827e2a6a349e009f6c98f31178ce84042b0e2e10.1237407249.git.monstr@monstr.eu> <6eb167a9a027d644f10b843b8b1bde66e4c2ee25.1237407249.git.monstr@monstr.eu> <592d2a1c72581b6abf73841e640e7b7306c3ec3b.1237407249.git.monstr@monstr.eu> <1165ce05edc67098d818cf42fd41a621868ab2a6.1237407249.git.monstr@monstr.eu> <35b0490d6a70779bdf2e2f55265c7c70a0dcbf1a.1237407249.git.monstr@monstr.eu> <1ca9913fc2b9ec220fdb9909f7929abfc38e41b1.1237407249.git.monstr@monstr.eu> <4a7e63a56ea0490013724ffddb9f824caafdcbc6.1237407249.git.monstr@monstr.eu> <6d67a197ab9f953b93ef151d9a4a198ba0730ef5.1237407249.git.monstr@monstr.eu> <7342f6af4eb95f5bc2cd89a196ab33a3ddc4d5c1.1237407249.git.monstr@monstr.eu> <46a9b066a95fad763f6c12044dbc3cd580681fb9.1237407249.git.monstr@monstr.eu> <5f12a0cd5bd492df05689715eb73b03b2a07f5d4.1237407249.git.monstr@monstr.eu> <1e1dc8ccd5abc4e51272f52465c6b9e5f847f947.1237407249.git.monstr@monstr.eu> <14c123f2bae10a8b5fb76cd059ba105c212776ef.1237407249.git.monstr@monstr.eu> <4947b1131c14c1526b81493f461606018bd0f090.1237407249.git.monstr@monstr.eu> <46bc9a74719cb3c21dfdd558b93bec8c5b5675d8.1237407249.git.monstr@monstr.eu> <34c2f9e50610e147be556607e482b88fd674b887.1237407249.git.monstr@monstr.eu> <15f6f10873f7c6f4f3b06f9d4d5af3ee9714f873.1237407249.git.monstr@monstr.eu> In-Reply-To: <0168f03c96e9479ede695a9859c8a0691baa8ef3.1237407249.git.monstr@monstr.eu> References: <0168f03c96e9479ede695a9859c8a0691baa8ef3.1237407249.git.monstr@monstr.eu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5939 Lines: 207 From: Michal Simek Signed-off-by: Michal Simek --- arch/microblaze/include/asm/string.h | 24 +++++ arch/microblaze/include/asm/thread_info.h | 152 +++++++++++++++++++++++++++++ 2 files changed, 176 insertions(+), 0 deletions(-) create mode 100644 arch/microblaze/include/asm/string.h create mode 100644 arch/microblaze/include/asm/thread_info.h diff --git a/arch/microblaze/include/asm/string.h b/arch/microblaze/include/asm/string.h new file mode 100644 index 0000000..f7728c9 --- /dev/null +++ b/arch/microblaze/include/asm/string.h @@ -0,0 +1,24 @@ +/* + * Copyright (C) 2006 Atmark Techno, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#ifndef _ASM_MICROBLAZE_STRING_H +#define _ASM_MICROBLAZE_STRING_H + +#ifndef __KERNEL__ + +#define __HAVE_ARCH_MEMSET +#define __HAVE_ARCH_MEMCPY +#define __HAVE_ARCH_MEMMOVE + +extern void *memset(void *, int, __kernel_size_t); +extern void *memcpy(void *, const void *, __kernel_size_t); +extern void *memmove(void *, const void *, __kernel_size_t); + +#endif /* __KERNEL__ */ + +#endif /* _ASM_MICROBLAZE_STRING_H */ diff --git a/arch/microblaze/include/asm/thread_info.h b/arch/microblaze/include/asm/thread_info.h new file mode 100644 index 0000000..95605b8 --- /dev/null +++ b/arch/microblaze/include/asm/thread_info.h @@ -0,0 +1,152 @@ +/* + * Copyright (C) 2006 Atmark Techno, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#ifndef _ASM_MICROBLAZE_THREAD_INFO_H +#define _ASM_MICROBLAZE_THREAD_INFO_H + +#ifdef __KERNEL__ + +/* we have 8k stack */ +#define THREAD_SHIFT 13 +#define THREAD_SIZE (1 << THREAD_SHIFT) +#define THREAD_SIZE_ORDER 1 + +#ifndef __ASSEMBLY__ +# include +# include +# include + +/* + * low level task data that entry.S needs immediate access to + * - this struct should fit entirely inside of one cache line + * - this struct shares the supervisor stack pages + * - if the contents of this structure are changed, the assembly constants + * must also be changed + */ + +struct cpu_context { + __u32 r1; /* stack pointer */ + __u32 r2; + /* dedicated registers */ + __u32 r13; + __u32 r14; + __u32 r15; + __u32 r16; + __u32 r17; + __u32 r18; + /* non-volatile registers */ + __u32 r19; + __u32 r20; + __u32 r21; + __u32 r22; + __u32 r23; + __u32 r24; + __u32 r25; + __u32 r26; + __u32 r27; + __u32 r28; + __u32 r29; + __u32 r30; + /* r31 is used as current task pointer */ + /* special purpose registers */ + __u32 msr; + __u32 ear; + __u32 esr; + __u32 fsr; +}; + +struct thread_info { + struct task_struct *task; /* main task structure */ + struct exec_domain *exec_domain; /* execution domain */ + unsigned long flags; /* low level flags */ + unsigned long status; /* thread-synchronous flags */ + __u32 cpu; /* current CPU */ + __s32 preempt_count; /* 0 => preemptable,< 0 => BUG*/ + mm_segment_t addr_limit; /* thread address space */ + struct restart_block restart_block; + + struct cpu_context cpu_context; +}; + +/* + * macros/functions for gaining access to the thread information structure + * + * preempt_count needs to be 1 initially, until the scheduler is functional. + */ +#define INIT_THREAD_INFO(tsk) \ +{ \ + .task = &tsk, \ + .exec_domain = &default_exec_domain, \ + .flags = 0, \ + .cpu = 0, \ + .preempt_count = 1, \ + .addr_limit = KERNEL_DS, \ + .restart_block = { \ + .fn = do_no_restart_syscall, \ + }, \ +} + +#define init_thread_info (init_thread_union.thread_info) +#define init_stack (init_thread_union.stack) + +/* how to get the thread information struct from C */ +static inline struct thread_info *current_thread_info(void) +{ + register unsigned long sp asm("r1"); + + return (struct thread_info *)(sp & ~(THREAD_SIZE-1)); +} + +/* thread information allocation */ +#endif /* __ASSEMBLY__ */ + +#define PREEMPT_ACTIVE 0x10000000 + +/* + * thread information flags + * - these are process state flags that various assembly files may + * need to access + * - pending work-to-be-done flags are in LSW + * - other flags in MSW + */ +#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ +#define TIF_NOTIFY_RESUME 1 /* resumption notification requested */ +#define TIF_SIGPENDING 2 /* signal pending */ +#define TIF_NEED_RESCHED 3 /* rescheduling necessary */ +/* restore singlestep on return to user mode */ +#define TIF_SINGLESTEP 4 +#define TIF_IRET 5 /* return with iret */ +#define TIF_MEMDIE 6 +/* true if poll_idle() is polling TIF_NEED_RESCHED */ +#define TIF_POLLING_NRFLAG 16 + +#define _TIF_SYSCALL_TRACE (1<