| wdenk | b783eda | 2003-06-25 22:26:29 +0000 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/asm-arm/proc-armv/processor.h |
| 3 | * |
| 4 | * Copyright (C) 1996-1999 Russell King. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * Changelog: |
| 11 | * 20-09-1996 RMK Created |
| 12 | * 26-09-1996 RMK Added 'EXTRA_THREAD_STRUCT*' |
| 13 | * 28-09-1996 RMK Moved start_thread into the processor dependencies |
| 14 | * 09-09-1998 PJB Delete redundant `wp_works_ok' |
| 15 | * 30-05-1999 PJB Save sl across context switches |
| 16 | * 31-07-1999 RMK Added 'domain' stuff |
| 17 | */ |
| 18 | #ifndef __ASM_PROC_PROCESSOR_H |
| 19 | #define __ASM_PROC_PROCESSOR_H |
| 20 | |
| 21 | #include <asm/proc/domain.h> |
| 22 | |
| 23 | #define KERNEL_STACK_SIZE PAGE_SIZE |
| 24 | |
| 25 | struct context_save_struct { |
| 26 | unsigned long cpsr; |
| 27 | unsigned long r4; |
| 28 | unsigned long r5; |
| 29 | unsigned long r6; |
| 30 | unsigned long r7; |
| 31 | unsigned long r8; |
| 32 | unsigned long r9; |
| 33 | unsigned long sl; |
| 34 | unsigned long fp; |
| 35 | unsigned long pc; |
| 36 | }; |
| 37 | |
| 38 | #define INIT_CSS (struct context_save_struct){ SVC_MODE, 0, 0, 0, 0, 0, 0, 0, 0, 0 } |
| 39 | |
| 40 | #define EXTRA_THREAD_STRUCT \ |
| 41 | unsigned int domain; |
| 42 | |
| 43 | #define EXTRA_THREAD_STRUCT_INIT \ |
| 44 | domain: domain_val(DOMAIN_USER, DOMAIN_CLIENT) | \ |
| 45 | domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \ |
| 46 | domain_val(DOMAIN_IO, DOMAIN_CLIENT) |
| 47 | |
| 48 | #define start_thread(regs,pc,sp) \ |
| 49 | ({ \ |
| 50 | unsigned long *stack = (unsigned long *)sp; \ |
| 51 | set_fs(USER_DS); \ |
| 52 | memzero(regs->uregs, sizeof(regs->uregs)); \ |
| 53 | if (current->personality & ADDR_LIMIT_32BIT) \ |
| 54 | regs->ARM_cpsr = USR_MODE; \ |
| 55 | else \ |
| 56 | regs->ARM_cpsr = USR26_MODE; \ |
| 57 | regs->ARM_pc = pc; /* pc */ \ |
| 58 | regs->ARM_sp = sp; /* sp */ \ |
| 59 | regs->ARM_r2 = stack[2]; /* r2 (envp) */ \ |
| 60 | regs->ARM_r1 = stack[1]; /* r1 (argv) */ \ |
| 61 | regs->ARM_r0 = stack[0]; /* r0 (argc) */ \ |
| 62 | }) |
| 63 | |
| 64 | #define KSTK_EIP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1019]) |
| 65 | #define KSTK_ESP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1017]) |
| 66 | |
| 67 | /* Allocation and freeing of basic task resources. */ |
| 68 | /* |
| 69 | * NOTE! The task struct and the stack go together |
| 70 | */ |
| 71 | #define ll_alloc_task_struct() ((struct task_struct *) __get_free_pages(GFP_KERNEL,1)) |
| 72 | #define ll_free_task_struct(p) free_pages((unsigned long)(p),1) |
| 73 | |
| 74 | #endif |