diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-17 10:11:25 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-17 10:11:25 -0700 |
commit | 7b7adc4a016a1decb806eb71ecab98721fa7f146 (patch) | |
tree | 0a6f9a6e5659faa94604fbc575382a18f143c657 /arch/unicore32/include/asm/processor.h | |
parent | Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 (diff) | |
parent | unicore32: rewrite arch-specific tlb.h to use asm-generic version (diff) | |
download | linux-dev-7b7adc4a016a1decb806eb71ecab98721fa7f146.tar.xz linux-dev-7b7adc4a016a1decb806eb71ecab98721fa7f146.zip |
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/epip/linux-2.6-unicore32
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/epip/linux-2.6-unicore32: (40 commits)
unicore32: rewrite arch-specific tlb.h to use asm-generic version
unicore32: modify io_p2v and io_v2p macros, and adjust PKUNITY_mmio_BASEs
unicore32: replace unicore32-specific iomap functions with generic lib implementation
unicore32 machine related: add frame buffer driver for pkunity-v3 soc
unicore32 machine related files: add i2c bus drivers for pkunity-v3 soc
unicore32 io: redefine __REG(x) and re-use readl/writel funcs
unicore32 i8042 upgrade and bugfix: adjust resource request region type
unicore32 upgrade to v2.6.38-rc5: add one more paramter for pte_alloc_map call
unicore32 i8042: adjust io funcs of i8042-unicore32io.h
unicore32: rename PKUNITY_IOSPACE_BASE to PKUNITY_MMIO_BASE
unicore32: modify function names and parameters for irq_chips
unicore32: remove unused lines in arch/unicore32/include/asm/irq.h
unicore32 time.c: change calculate method for clock_event_device
unicore32: ADD MAINTAINER for unicore32 architecture
unicore32 machine related files: ps2 driver
unicore32 machine related files: pci bus handling
unicore32 machine related files: hardware registers
unicore32 machine related files: core files
unicore32 additional architecture files: boot process
unicore32 additional architecture files: low-level lib: misc
...
Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/unicore32/include/asm/processor.h')
-rw-r--r-- | arch/unicore32/include/asm/processor.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/arch/unicore32/include/asm/processor.h b/arch/unicore32/include/asm/processor.h new file mode 100644 index 000000000000..e11cb0786578 --- /dev/null +++ b/arch/unicore32/include/asm/processor.h @@ -0,0 +1,92 @@ +/* + * linux/arch/unicore32/include/asm/processor.h + * + * Code specific to PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2010 GUAN Xue-tao + * + * 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. + */ + +#ifndef __UNICORE_PROCESSOR_H__ +#define __UNICORE_PROCESSOR_H__ + +/* + * Default implementation of macro that returns current + * instruction pointer ("program counter"). + */ +#define current_text_addr() ({ __label__ _l; _l: &&_l; }) + +#ifdef __KERNEL__ + +#include <asm/ptrace.h> +#include <asm/types.h> + +#ifdef __KERNEL__ +#define STACK_TOP TASK_SIZE +#define STACK_TOP_MAX TASK_SIZE +#endif + +struct debug_entry { + u32 address; + u32 insn; +}; + +struct debug_info { + int nsaved; + struct debug_entry bp[2]; +}; + +struct thread_struct { + /* fault info */ + unsigned long address; + unsigned long trap_no; + unsigned long error_code; + /* debugging */ + struct debug_info debug; +}; + +#define INIT_THREAD { } + +#define start_thread(regs, pc, sp) \ +({ \ + unsigned long *stack = (unsigned long *)sp; \ + set_fs(USER_DS); \ + memset(regs->uregs, 0, sizeof(regs->uregs)); \ + regs->UCreg_asr = USER_MODE; \ + regs->UCreg_pc = pc & ~1; /* pc */ \ + regs->UCreg_sp = sp; /* sp */ \ + regs->UCreg_02 = stack[2]; /* r2 (envp) */ \ + regs->UCreg_01 = stack[1]; /* r1 (argv) */ \ + regs->UCreg_00 = stack[0]; /* r0 (argc) */ \ +}) + +/* Forward declaration, a strange C thing */ +struct task_struct; + +/* Free all resources held by a thread. */ +extern void release_thread(struct task_struct *); + +/* Prepare to copy thread state - unlazy all lazy status */ +#define prepare_to_copy(tsk) do { } while (0) + +unsigned long get_wchan(struct task_struct *p); + +#define cpu_relax() barrier() + +/* + * Create a new kernel thread + */ +extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); + +#define task_pt_regs(p) \ + ((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1) + +#define KSTK_EIP(tsk) (task_pt_regs(tsk)->UCreg_pc) +#define KSTK_ESP(tsk) (task_pt_regs(tsk)->UCreg_sp) + +#endif + +#endif /* __UNICORE_PROCESSOR_H__ */ |