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Viewing changes to include/asm-arm/proc-armv/processor.h

  • Committer: Bazaar Package Importer
  • Author(s): Oliver Grawert
  • Date: 2010-03-22 15:06:23 UTC
  • Revision ID: james.westby@ubuntu.com-20100322150623-i21g8rgiyl5dohag
Tags: upstream-2010.3git20100315
Import upstream version 2010.3git20100315

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include/asm-arm/proc-armv/processor.h
 
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/*
 
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 *  linux/include/asm-arm/proc-armv/processor.h
 
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 *
 
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 *  Copyright (C) 1996-1999 Russell King.
 
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 *
 
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 * This program is free software; you can redistribute it and/or modify
 
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 * it under the terms of the GNU General Public License version 2 as
 
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 * published by the Free Software Foundation.
 
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 *
 
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 *  Changelog:
 
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 *   20-09-1996 RMK     Created
 
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 *   26-09-1996 RMK     Added 'EXTRA_THREAD_STRUCT*'
 
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 *   28-09-1996 RMK     Moved start_thread into the processor dependencies
 
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 *   09-09-1998 PJB     Delete redundant `wp_works_ok'
 
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 *   30-05-1999 PJB     Save sl across context switches
 
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 *   31-07-1999 RMK     Added 'domain' stuff
 
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 */
 
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#ifndef __ASM_PROC_PROCESSOR_H
 
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#define __ASM_PROC_PROCESSOR_H
 
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#include <asm/proc/domain.h>
 
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#define KERNEL_STACK_SIZE       PAGE_SIZE
 
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struct context_save_struct {
 
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        unsigned long cpsr;
 
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        unsigned long r4;
 
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        unsigned long r5;
 
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        unsigned long r6;
 
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        unsigned long r7;
 
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        unsigned long r8;
 
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        unsigned long r9;
 
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        unsigned long sl;
 
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        unsigned long fp;
 
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        unsigned long pc;
 
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};
 
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#define INIT_CSS (struct context_save_struct){ SVC_MODE, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
 
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#define EXTRA_THREAD_STRUCT                                             \
 
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        unsigned int    domain;
 
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#define EXTRA_THREAD_STRUCT_INIT                                        \
 
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        domain:   domain_val(DOMAIN_USER, DOMAIN_CLIENT) |              \
 
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                  domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) |           \
 
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                  domain_val(DOMAIN_IO, DOMAIN_CLIENT)
 
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#define start_thread(regs,pc,sp)                                        \
 
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({                                                                      \
 
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        unsigned long *stack = (unsigned long *)sp;                     \
 
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        set_fs(USER_DS);                                                \
 
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        memzero(regs->uregs, sizeof(regs->uregs));                      \
 
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        if (current->personality & ADDR_LIMIT_32BIT)                    \
 
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                regs->ARM_cpsr = USR_MODE;                              \
 
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        else                                                            \
 
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                regs->ARM_cpsr = USR26_MODE;                            \
 
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        regs->ARM_pc = pc;              /* pc */                        \
 
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        regs->ARM_sp = sp;              /* sp */                        \
 
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        regs->ARM_r2 = stack[2];        /* r2 (envp) */                 \
 
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        regs->ARM_r1 = stack[1];        /* r1 (argv) */                 \
 
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        regs->ARM_r0 = stack[0];        /* r0 (argc) */                 \
 
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})
 
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#define KSTK_EIP(tsk)   (((unsigned long *)(4096+(unsigned long)(tsk)))[1019])
 
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#define KSTK_ESP(tsk)   (((unsigned long *)(4096+(unsigned long)(tsk)))[1017])
 
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/* Allocation and freeing of basic task resources. */
 
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/*
 
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 * NOTE! The task struct and the stack go together
 
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 */
 
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#define ll_alloc_task_struct() ((struct task_struct *) __get_free_pages(GFP_KERNEL,1))
 
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#define ll_free_task_struct(p) free_pages((unsigned long)(p),1)
 
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#endif