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/*

 *  linux/include/asm-arm/proc-armv/processor.h

 *

 *  Copyright (C) 1996-1999 Russell King.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 *  Changelog:

 *   20-09-1996 RMK     Created

 *   26-09-1996 RMK     Added 'EXTRA_THREAD_STRUCT*'

 *   28-09-1996 RMK     Moved start_thread into the processor dependencies

 *   09-09-1998 PJB     Delete redundant `wp_works_ok'

 *   30-05-1999 PJB     Save sl across context switches

 *   31-07-1999 RMK     Added 'domain' stuff

 */

#ifndef __ASM_PROC_PROCESSOR_H

#define __ASM_PROC_PROCESSOR_H

#include <asm/proc/domain.h>

#define KERNEL_STACK_SIZE       PAGE_SIZE

struct context_save_struct {

        unsigned long cpsr;

        unsigned long r4;

        unsigned long r5;

        unsigned long r6;

        unsigned long r7;

        unsigned long r8;

        unsigned long r9;

        unsigned long sl;

        unsigned long fp;

        unsigned long pc;

};

#define INIT_CSS (struct context_save_struct){ SVC_MODE, 0, 0, 0, 0, 0, 0, 0, 0, 0 }

#define EXTRA_THREAD_STRUCT                                             \

        unsigned int    domain;

#define EXTRA_THREAD_STRUCT_INIT                                        \

        domain:   domain_val(DOMAIN_USER, DOMAIN_CLIENT) |              \

                  domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) |           \

                  domain_val(DOMAIN_IO, DOMAIN_CLIENT)

#define start_thread(regs,pc,sp)                                        \

({                                                                      \

        unsigned long *stack = (unsigned long *)sp;                     \

        set_fs(USER_DS);                                                \

        memzero(regs->uregs, sizeof(regs->uregs));                      \

        if (current->personality & ADDR_LIMIT_32BIT)                    \

                regs->ARM_cpsr = USR_MODE;                              \

        else                                                            \

                regs->ARM_cpsr = USR26_MODE;                            \

        regs->ARM_pc = pc;              /* pc */                        \

        regs->ARM_sp = sp;              /* sp */                        \

        regs->ARM_r2 = stack[2];        /* r2 (envp) */                 \

        regs->ARM_r1 = stack[1];        /* r1 (argv) */                 \

        regs->ARM_r0 = stack[0]; /* r0 (argc) */                 \

})

#define KSTK_EIP(tsk)   (((unsigned long *)(4096+(unsigned long)(tsk)))[1019])

#define KSTK_ESP(tsk)   (((unsigned long *)(4096+(unsigned long)(tsk)))[1017])

/* Allocation and freeing of basic task resources. */

/*

 * NOTE! The task struct and the stack go together

 */

#define ll_alloc_task_struct() ((struct task_struct *) __get_free_pages(GFP_KERNEL,1))

#define ll_free_task_struct(p) free_pages((unsigned long)(p),1)

#endif