| 1 | /*
|
|---|
| 2 | * Copyright (c) 2003-2004 Jakub Jermar
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup mips32
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /** @file
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #ifndef KERN_mips32_ASM_H_
|
|---|
| 36 | #define KERN_mips32_ASM_H_
|
|---|
| 37 |
|
|---|
| 38 | #include <typedefs.h>
|
|---|
| 39 | #include <config.h>
|
|---|
| 40 |
|
|---|
| 41 |
|
|---|
| 42 | static inline void cpu_sleep(void)
|
|---|
| 43 | {
|
|---|
| 44 | /* Most of the simulators do not support */
|
|---|
| 45 | /* asm volatile ("wait"); */
|
|---|
| 46 | }
|
|---|
| 47 |
|
|---|
| 48 | /** Return base address of current stack
|
|---|
| 49 | *
|
|---|
| 50 | * Return the base address of the current stack.
|
|---|
| 51 | * The stack is assumed to be STACK_SIZE bytes long.
|
|---|
| 52 | * The stack must start on page boundary.
|
|---|
| 53 | */
|
|---|
| 54 | static inline uintptr_t get_stack_base(void)
|
|---|
| 55 | {
|
|---|
| 56 | uintptr_t v;
|
|---|
| 57 |
|
|---|
| 58 | asm volatile (
|
|---|
| 59 | "and %0, $29, %1\n"
|
|---|
| 60 | : "=r" (v)
|
|---|
| 61 | : "r" (~(STACK_SIZE-1))
|
|---|
| 62 | );
|
|---|
| 63 |
|
|---|
| 64 | return v;
|
|---|
| 65 | }
|
|---|
| 66 |
|
|---|
| 67 | extern void cpu_halt(void) __attribute__((noreturn));
|
|---|
| 68 | extern void asm_delay_loop(uint32_t t);
|
|---|
| 69 | extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,
|
|---|
| 70 | uintptr_t entry);
|
|---|
| 71 |
|
|---|
| 72 | extern ipl_t interrupts_disable(void);
|
|---|
| 73 | extern ipl_t interrupts_enable(void);
|
|---|
| 74 | extern void interrupts_restore(ipl_t ipl);
|
|---|
| 75 | extern ipl_t interrupts_read(void);
|
|---|
| 76 | extern bool interrupts_disabled(void);
|
|---|
| 77 |
|
|---|
| 78 | static inline void pio_write_8(ioport8_t *port, uint8_t v)
|
|---|
| 79 | {
|
|---|
| 80 | *port = v;
|
|---|
| 81 | }
|
|---|
| 82 |
|
|---|
| 83 | static inline void pio_write_16(ioport16_t *port, uint16_t v)
|
|---|
| 84 | {
|
|---|
| 85 | *port = v;
|
|---|
| 86 | }
|
|---|
| 87 |
|
|---|
| 88 | static inline void pio_write_32(ioport32_t *port, uint32_t v)
|
|---|
| 89 | {
|
|---|
| 90 | *port = v;
|
|---|
| 91 | }
|
|---|
| 92 |
|
|---|
| 93 | static inline uint8_t pio_read_8(ioport8_t *port)
|
|---|
| 94 | {
|
|---|
| 95 | return *port;
|
|---|
| 96 | }
|
|---|
| 97 |
|
|---|
| 98 | static inline uint16_t pio_read_16(ioport16_t *port)
|
|---|
| 99 | {
|
|---|
| 100 | return *port;
|
|---|
| 101 | }
|
|---|
| 102 |
|
|---|
| 103 | static inline uint32_t pio_read_32(ioport32_t *port)
|
|---|
| 104 | {
|
|---|
| 105 | return *port;
|
|---|
| 106 | }
|
|---|
| 107 |
|
|---|
| 108 | #endif
|
|---|
| 109 |
|
|---|
| 110 | /** @}
|
|---|
| 111 | */
|
|---|
