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| Rev | Author | Line No. | Line |
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| 2128 | jermar | 1 | /* |
| 2465 | jermar | 2 | * Copyright (c) 2007 Michal Kebrt |
| 2128 | jermar | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup arm32 |
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| 30 | * @{ |
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| 31 | */ |
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| 2465 | jermar | 32 | /** @file |
| 33 | * @brief Declarations of functions implemented in assembly. |
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| 2128 | jermar | 34 | */ |
| 35 | |||
| 36 | #ifndef KERN_arm32_ASM_H_ |
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| 37 | #define KERN_arm32_ASM_H_ |
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| 38 | |||
| 39 | #include <arch/types.h> |
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| 2465 | jermar | 40 | #include <arch/stack.h> |
| 41 | #include <config.h> |
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| 42 | #include <arch/interrupt.h> |
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| 2128 | jermar | 43 | |
| 2465 | jermar | 44 | /** No such instruction on ARM to sleep CPU. */ |
| 2128 | jermar | 45 | static inline void cpu_sleep(void) |
| 46 | { |
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| 47 | } |
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| 48 | |||
| 3880 | decky | 49 | /** No I/O port address space on ARM. */ |
| 50 | static inline void outb(ioport_t port, uint8_t v) |
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| 51 | { |
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| 52 | } |
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| 53 | |||
| 54 | /** No I/O port address space on ARM. */ |
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| 55 | static inline uint8_t inb(ioport_t port) |
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| 56 | { |
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| 57 | return 0; |
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| 58 | } |
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| 59 | |||
| 2465 | jermar | 60 | /** Return base address of current stack. |
| 2128 | jermar | 61 | * |
| 62 | * Return the base address of the current stack. |
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| 63 | * The stack is assumed to be STACK_SIZE bytes long. |
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| 64 | * The stack must start on page boundary. |
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| 65 | */ |
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| 66 | static inline uintptr_t get_stack_base(void) |
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| 67 | { |
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| 2465 | jermar | 68 | uintptr_t v; |
| 69 | asm volatile ( |
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| 70 | "and %0, sp, %1\n" |
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| 71 | : "=r" (v) |
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| 72 | : "r" (~(STACK_SIZE - 1)) |
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| 73 | ); |
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| 74 | return v; |
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| 2128 | jermar | 75 | } |
| 76 | |||
| 77 | extern void cpu_halt(void); |
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| 78 | extern void asm_delay_loop(uint32_t t); |
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| 79 | extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg, |
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| 80 | uintptr_t entry); |
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| 81 | |||
| 82 | #endif |
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| 83 | |||
| 84 | /** @} |
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| 85 | */ |