1*819833afSPeter Tyser /* 2*819833afSPeter Tyser * linux/include/asm-arm/proc-armv/processor.h 3*819833afSPeter Tyser * 4*819833afSPeter Tyser * Copyright (C) 1996-1999 Russell King. 5*819833afSPeter Tyser * 6*819833afSPeter Tyser * This program is free software; you can redistribute it and/or modify 7*819833afSPeter Tyser * it under the terms of the GNU General Public License version 2 as 8*819833afSPeter Tyser * published by the Free Software Foundation. 9*819833afSPeter Tyser * 10*819833afSPeter Tyser * Changelog: 11*819833afSPeter Tyser * 20-09-1996 RMK Created 12*819833afSPeter Tyser * 26-09-1996 RMK Added 'EXTRA_THREAD_STRUCT*' 13*819833afSPeter Tyser * 28-09-1996 RMK Moved start_thread into the processor dependencies 14*819833afSPeter Tyser * 09-09-1998 PJB Delete redundant `wp_works_ok' 15*819833afSPeter Tyser * 30-05-1999 PJB Save sl across context switches 16*819833afSPeter Tyser * 31-07-1999 RMK Added 'domain' stuff 17*819833afSPeter Tyser */ 18*819833afSPeter Tyser #ifndef __ASM_PROC_PROCESSOR_H 19*819833afSPeter Tyser #define __ASM_PROC_PROCESSOR_H 20*819833afSPeter Tyser 21*819833afSPeter Tyser #include <asm/proc/domain.h> 22*819833afSPeter Tyser 23*819833afSPeter Tyser #define KERNEL_STACK_SIZE PAGE_SIZE 24*819833afSPeter Tyser 25*819833afSPeter Tyser struct context_save_struct { 26*819833afSPeter Tyser unsigned long cpsr; 27*819833afSPeter Tyser unsigned long r4; 28*819833afSPeter Tyser unsigned long r5; 29*819833afSPeter Tyser unsigned long r6; 30*819833afSPeter Tyser unsigned long r7; 31*819833afSPeter Tyser unsigned long r8; 32*819833afSPeter Tyser unsigned long r9; 33*819833afSPeter Tyser unsigned long sl; 34*819833afSPeter Tyser unsigned long fp; 35*819833afSPeter Tyser unsigned long pc; 36*819833afSPeter Tyser }; 37*819833afSPeter Tyser 38*819833afSPeter Tyser #define INIT_CSS (struct context_save_struct){ SVC_MODE, 0, 0, 0, 0, 0, 0, 0, 0, 0 } 39*819833afSPeter Tyser 40*819833afSPeter Tyser #define EXTRA_THREAD_STRUCT \ 41*819833afSPeter Tyser unsigned int domain; 42*819833afSPeter Tyser 43*819833afSPeter Tyser #define EXTRA_THREAD_STRUCT_INIT \ 44*819833afSPeter Tyser domain: domain_val(DOMAIN_USER, DOMAIN_CLIENT) | \ 45*819833afSPeter Tyser domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \ 46*819833afSPeter Tyser domain_val(DOMAIN_IO, DOMAIN_CLIENT) 47*819833afSPeter Tyser 48*819833afSPeter Tyser #define start_thread(regs,pc,sp) \ 49*819833afSPeter Tyser ({ \ 50*819833afSPeter Tyser unsigned long *stack = (unsigned long *)sp; \ 51*819833afSPeter Tyser set_fs(USER_DS); \ 52*819833afSPeter Tyser memzero(regs->uregs, sizeof(regs->uregs)); \ 53*819833afSPeter Tyser if (current->personality & ADDR_LIMIT_32BIT) \ 54*819833afSPeter Tyser regs->ARM_cpsr = USR_MODE; \ 55*819833afSPeter Tyser else \ 56*819833afSPeter Tyser regs->ARM_cpsr = USR26_MODE; \ 57*819833afSPeter Tyser regs->ARM_pc = pc; /* pc */ \ 58*819833afSPeter Tyser regs->ARM_sp = sp; /* sp */ \ 59*819833afSPeter Tyser regs->ARM_r2 = stack[2]; /* r2 (envp) */ \ 60*819833afSPeter Tyser regs->ARM_r1 = stack[1]; /* r1 (argv) */ \ 61*819833afSPeter Tyser regs->ARM_r0 = stack[0]; /* r0 (argc) */ \ 62*819833afSPeter Tyser }) 63*819833afSPeter Tyser 64*819833afSPeter Tyser #define KSTK_EIP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1019]) 65*819833afSPeter Tyser #define KSTK_ESP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1017]) 66*819833afSPeter Tyser 67*819833afSPeter Tyser /* Allocation and freeing of basic task resources. */ 68*819833afSPeter Tyser /* 69*819833afSPeter Tyser * NOTE! The task struct and the stack go together 70*819833afSPeter Tyser */ 71*819833afSPeter Tyser #define ll_alloc_task_struct() ((struct task_struct *) __get_free_pages(GFP_KERNEL,1)) 72*819833afSPeter Tyser #define ll_free_task_struct(p) free_pages((unsigned long)(p),1) 73*819833afSPeter Tyser 74*819833afSPeter Tyser #endif 75