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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-armv/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
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