diff options
Diffstat (limited to 'arch/arm/include/asm/proc-armv/processor.h')
| -rw-r--r-- | arch/arm/include/asm/proc-armv/processor.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/arm/include/asm/proc-armv/processor.h b/arch/arm/include/asm/proc-armv/processor.h new file mode 100644 index 0000000000..5bfab7fb90 --- /dev/null +++ b/arch/arm/include/asm/proc-armv/processor.h @@ -0,0 +1,74 @@ +/* + * 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 |