diff options
Diffstat (limited to 'include/asm-v850/entry.h')
| -rw-r--r-- | include/asm-v850/entry.h | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/include/asm-v850/entry.h b/include/asm-v850/entry.h deleted file mode 100644 index d9df8ac48584..000000000000 --- a/include/asm-v850/entry.h +++ /dev/null | |||
| @@ -1,113 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * include/asm-v850/entry.h -- Definitions used by low-level trap handlers | ||
| 3 | * | ||
| 4 | * Copyright (C) 2001,02,03 NEC Electronics Corporation | ||
| 5 | * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> | ||
| 6 | * | ||
| 7 | * This file is subject to the terms and conditions of the GNU General | ||
| 8 | * Public License. See the file COPYING in the main directory of this | ||
| 9 | * archive for more details. | ||
| 10 | * | ||
| 11 | * Written by Miles Bader <miles@gnu.org> | ||
| 12 | */ | ||
| 13 | |||
| 14 | #ifndef __V850_ENTRY_H__ | ||
| 15 | #define __V850_ENTRY_H__ | ||
| 16 | |||
| 17 | |||
| 18 | #include <asm/ptrace.h> | ||
| 19 | #include <asm/machdep.h> | ||
| 20 | |||
| 21 | |||
| 22 | /* These are special variables using by the kernel trap/interrupt code | ||
| 23 | to save registers in, at a time when there are no spare registers we | ||
| 24 | can use to do so, and we can't depend on the value of the stack | ||
| 25 | pointer. This means that they must be within a signed 16-bit | ||
| 26 | displacement of 0x00000000. */ | ||
| 27 | |||
| 28 | #define KERNEL_VAR_SPACE_ADDR R0_RAM_ADDR | ||
| 29 | |||
| 30 | #ifdef __ASSEMBLY__ | ||
| 31 | #define KERNEL_VAR(addr) addr[r0] | ||
| 32 | #else | ||
| 33 | #define KERNEL_VAR(addr) (*(volatile unsigned long *)(addr)) | ||
| 34 | #endif | ||
| 35 | |||
| 36 | /* Kernel stack pointer, 4 bytes. */ | ||
| 37 | #define KSP_ADDR (KERNEL_VAR_SPACE_ADDR + 0) | ||
| 38 | #define KSP KERNEL_VAR (KSP_ADDR) | ||
| 39 | /* 1 if in kernel-mode, 0 if in user mode, 1 byte. */ | ||
| 40 | #define KM_ADDR (KERNEL_VAR_SPACE_ADDR + 4) | ||
| 41 | #define KM KERNEL_VAR (KM_ADDR) | ||
| 42 | /* Temporary storage for interrupt handlers, 4 bytes. */ | ||
| 43 | #define INT_SCRATCH_ADDR (KERNEL_VAR_SPACE_ADDR + 8) | ||
| 44 | #define INT_SCRATCH KERNEL_VAR (INT_SCRATCH_ADDR) | ||
| 45 | /* Where the stack-pointer is saved when jumping to various sorts of | ||
| 46 | interrupt handlers. ENTRY_SP is used by everything except NMIs, | ||
| 47 | which have their own location. Higher-priority NMIs can clobber the | ||
| 48 | value written by a lower priority NMI, since they can't be disabled, | ||
| 49 | but that's OK, because only NMI0 (the lowest-priority one) is allowed | ||
| 50 | to return. */ | ||
| 51 | #define ENTRY_SP_ADDR (KERNEL_VAR_SPACE_ADDR + 12) | ||
| 52 | #define ENTRY_SP KERNEL_VAR (ENTRY_SP_ADDR) | ||
| 53 | #define NMI_ENTRY_SP_ADDR (KERNEL_VAR_SPACE_ADDR + 16) | ||
| 54 | #define NMI_ENTRY_SP KERNEL_VAR (NMI_ENTRY_SP_ADDR) | ||
| 55 | |||
| 56 | #ifdef CONFIG_RESET_GUARD | ||
| 57 | /* Used to detect unexpected resets (since the v850 has no MMU, any call | ||
| 58 | through a null pointer will jump to the reset vector). We detect | ||
| 59 | such resets by checking for a magic value, RESET_GUARD_ACTIVE, in | ||
| 60 | this location. Properly resetting the machine stores zero there, so | ||
| 61 | it shouldn't trigger the guard; the power-on value is uncertain, but | ||
| 62 | it's unlikely to be RESET_GUARD_ACTIVE. */ | ||
| 63 | #define RESET_GUARD_ADDR (KERNEL_VAR_SPACE_ADDR + 28) | ||
| 64 | #define RESET_GUARD KERNEL_VAR (RESET_GUARD_ADDR) | ||
| 65 | #define RESET_GUARD_ACTIVE 0xFAB4BEEF | ||
| 66 | #endif /* CONFIG_RESET_GUARD */ | ||
| 67 | |||
| 68 | #ifdef CONFIG_V850E_HIGHRES_TIMER | ||
| 69 | #define HIGHRES_TIMER_SLOW_TICKS_ADDR (KERNEL_VAR_SPACE_ADDR + 32) | ||
| 70 | #define HIGHRES_TIMER_SLOW_TICKS KERNEL_VAR (HIGHRES_TIMER_SLOW_TICKS_ADDR) | ||
| 71 | #endif /* CONFIG_V850E_HIGHRES_TIMER */ | ||
| 72 | |||
| 73 | #ifndef __ASSEMBLY__ | ||
| 74 | |||
| 75 | #ifdef CONFIG_RESET_GUARD | ||
| 76 | /* Turn off reset guard, so that resetting the machine works normally. | ||
| 77 | This should be called in the various machine_halt, etc., functions. */ | ||
| 78 | static inline void disable_reset_guard (void) | ||
| 79 | { | ||
| 80 | RESET_GUARD = 0; | ||
| 81 | } | ||
| 82 | #endif /* CONFIG_RESET_GUARD */ | ||
| 83 | |||
| 84 | #endif /* !__ASSEMBLY__ */ | ||
| 85 | |||
| 86 | |||
| 87 | /* A `state save frame' is a struct pt_regs preceded by some extra space | ||
| 88 | suitable for a function call stack frame. */ | ||
| 89 | |||
| 90 | /* Amount of room on the stack reserved for arguments and to satisfy the | ||
| 91 | C calling conventions, in addition to the space used by the struct | ||
| 92 | pt_regs that actually holds saved values. */ | ||
| 93 | #define STATE_SAVE_ARG_SPACE (6*4) /* Up to six arguments. */ | ||
| 94 | |||
| 95 | |||
| 96 | #ifdef __ASSEMBLY__ | ||
| 97 | |||
| 98 | /* The size of a state save frame. */ | ||
| 99 | #define STATE_SAVE_SIZE (PT_SIZE + STATE_SAVE_ARG_SPACE) | ||
| 100 | |||
| 101 | #else /* !__ASSEMBLY__ */ | ||
| 102 | |||
| 103 | /* The size of a state save frame. */ | ||
| 104 | #define STATE_SAVE_SIZE (sizeof (struct pt_regs) + STATE_SAVE_ARG_SPACE) | ||
| 105 | |||
| 106 | #endif /* __ASSEMBLY__ */ | ||
| 107 | |||
| 108 | |||
| 109 | /* Offset of the struct pt_regs in a state save frame. */ | ||
| 110 | #define STATE_SAVE_PT_OFFSET STATE_SAVE_ARG_SPACE | ||
| 111 | |||
| 112 | |||
| 113 | #endif /* __V850_ENTRY_H__ */ | ||