diff options
| author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 | 
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 | 
| commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
| tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-m32r/processor.h | |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-m32r/processor.h')
| -rw-r--r-- | include/asm-m32r/processor.h | 143 | 
1 files changed, 143 insertions, 0 deletions
| diff --git a/include/asm-m32r/processor.h b/include/asm-m32r/processor.h new file mode 100644 index 000000000000..09fd1813e780 --- /dev/null +++ b/include/asm-m32r/processor.h @@ -0,0 +1,143 @@ +#ifndef _ASM_M32R_PROCESSOR_H +#define _ASM_M32R_PROCESSOR_H + +/* + * include/asm-m32r/processor.h + * + * This file is subject to the terms and conditions of the GNU General Public + * License.  See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1994  Linus Torvalds + * Copyright (C) 2001  Hiroyuki Kondo, Hirokazu Takata, and Hitoshi Yamamoto + * Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org> + */ + +#include <linux/kernel.h> +#include <linux/config.h> +#include <asm/cache.h> +#include <asm/ptrace.h>  /* pt_regs */ + +/* + * Default implementation of macro that returns current + * instruction pointer ("program counter"). + */ +#define current_text_addr() ({ __label__ _l; _l: &&_l; }) + +/* + *  CPU type and hardware bug flags. Kept separately for each CPU. + *  Members of this structure are referenced in head.S, so think twice + *  before touching them. [mj] + */ + +struct cpuinfo_m32r { +	unsigned long pgtable_cache_sz; +	unsigned long cpu_clock; +	unsigned long bus_clock; +	unsigned long timer_divide; +	unsigned long loops_per_jiffy; +}; + +/* + * capabilities of CPUs + */ + +extern struct cpuinfo_m32r boot_cpu_data; + +#ifdef CONFIG_SMP +extern struct cpuinfo_m32r cpu_data[]; +#define current_cpu_data cpu_data[smp_processor_id()] +#else +#define cpu_data (&boot_cpu_data) +#define current_cpu_data boot_cpu_data +#endif + +/* + * User space process size: 2GB (default). + */ +#ifdef CONFIG_MMU +#define TASK_SIZE  (0x80000000UL) +#else +#define TASK_SIZE  (0x00400000UL) +#endif + +/* This decides where the kernel will search for a free chunk of vm + * space during mmap's. + */ +#define TASK_UNMAPPED_BASE	PAGE_ALIGN(TASK_SIZE / 3) + +typedef struct { +	unsigned long seg; +} mm_segment_t; + +#define MAX_TRAPS 10 + +struct debug_trap { +	int nr_trap; +	unsigned long	addr[MAX_TRAPS]; +	unsigned long	insn[MAX_TRAPS]; +}; + +struct thread_struct { +	unsigned long address; +	unsigned long trap_no;		/* Trap number  */ +	unsigned long error_code;	/* Error code of trap */ +	unsigned long lr;		/* saved pc */ +	unsigned long sp;		/* user stack pointer */ +	struct debug_trap debug_trap; +}; + +#define INIT_SP	(sizeof(init_stack) + (unsigned long) &init_stack) + +#define INIT_THREAD	{	\ +	.sp = INIT_SP,		\ +} + +/* + * Do necessary setup to start up a newly executed thread. + */ + +/* User process Backup PSW */ +#define USERPS_BPSW (M32R_PSW_BSM|M32R_PSW_BIE|M32R_PSW_BPM) + +#define start_thread(regs, new_pc, new_spu) 				\ +	do {								\ +		set_fs(USER_DS); 					\ +		regs->psw = (regs->psw | USERPS_BPSW) & 0x0000FFFFUL;	\ +		regs->bpc = new_pc;					\ +		regs->spu = new_spu;					\ +	} while (0) + +/* Forward declaration, a strange C thing */ +struct task_struct; +struct mm_struct; + +/* Free all resources held by a thread. */ +extern void release_thread(struct task_struct *); + +#define prepare_to_copy(tsk)	do { } while (0) + +/* + * create a kernel thread without removing it from tasklists + */ +extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); + +/* Copy and release all segment info associated with a VM */ +extern void copy_segments(struct task_struct *p, struct mm_struct * mm); +extern void release_segments(struct mm_struct * mm); + +extern unsigned long thread_saved_pc(struct task_struct *); + +/* Copy and release all segment info associated with a VM */ +#define copy_segments(p, mm)  do { } while (0) +#define release_segments(mm)  do { } while (0) + +unsigned long get_wchan(struct task_struct *p); +#define KSTK_EIP(tsk)  ((tsk)->thread.lr) +#define KSTK_ESP(tsk)  ((tsk)->thread.sp) + +#define THREAD_SIZE (2*PAGE_SIZE) + +#define cpu_relax()	barrier() + +#endif /* _ASM_M32R_PROCESSOR_H */ | 
