75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
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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-armv/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
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