Kevin O'Connor | f076a3e | 2008-02-25 22:25:15 -0500 | [diff] [blame] | 1 | // Basic x86 asm functions and function defs. |
| 2 | // |
| 3 | // Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> |
| 4 | // |
| 5 | // This file may be distributed under the terms of the GNU GPLv3 license. |
Kevin O'Connor | 786502d | 2008-02-27 10:41:41 -0500 | [diff] [blame] | 6 | #ifndef __UTIL_H |
| 7 | #define __UTIL_H |
Kevin O'Connor | f076a3e | 2008-02-25 22:25:15 -0500 | [diff] [blame] | 8 | |
| 9 | #include "ioport.h" // outb |
Kevin O'Connor | 38fcbfe | 2008-02-25 22:30:47 -0500 | [diff] [blame] | 10 | #include "biosvar.h" // struct bregs |
Kevin O'Connor | f076a3e | 2008-02-25 22:25:15 -0500 | [diff] [blame] | 11 | |
Kevin O'Connor | 786502d | 2008-02-27 10:41:41 -0500 | [diff] [blame] | 12 | static inline void irq_disable(void) |
| 13 | { |
| 14 | asm volatile("cli": : :"memory"); |
Kevin O'Connor | f076a3e | 2008-02-25 22:25:15 -0500 | [diff] [blame] | 15 | } |
| 16 | |
Kevin O'Connor | 786502d | 2008-02-27 10:41:41 -0500 | [diff] [blame] | 17 | static inline void irq_enable(void) |
| 18 | { |
| 19 | asm volatile("sti": : :"memory"); |
Kevin O'Connor | f076a3e | 2008-02-25 22:25:15 -0500 | [diff] [blame] | 20 | } |
| 21 | |
| 22 | static inline unsigned long irq_save(void) |
| 23 | { |
| 24 | unsigned long flags; |
| 25 | asm volatile("pushfl ; popl %0" : "=g" (flags)); |
| 26 | irq_disable(); |
| 27 | return flags; |
| 28 | } |
| 29 | |
| 30 | static inline void irq_restore(unsigned long flags) |
| 31 | { |
| 32 | asm volatile("pushl %0 ; popfl" : : "g" (flags) : "memory", "cc"); |
| 33 | } |
| 34 | |
Kevin O'Connor | 06ad44e | 2008-04-05 19:30:02 -0400 | [diff] [blame] | 35 | static inline void cpu_relax(void) |
| 36 | { |
| 37 | asm volatile("rep ; nop": : :"memory"); |
| 38 | } |
| 39 | |
Kevin O'Connor | 38fcbfe | 2008-02-25 22:30:47 -0500 | [diff] [blame] | 40 | static inline void nop(void) |
| 41 | { |
| 42 | asm volatile("nop"); |
| 43 | } |
| 44 | |
Kevin O'Connor | 95b2f78 | 2008-03-05 19:52:06 -0500 | [diff] [blame] | 45 | static inline void hlt(void) |
| 46 | { |
| 47 | asm volatile("hlt"); |
| 48 | } |
| 49 | |
Kevin O'Connor | 5e4235f | 2008-04-12 09:00:04 -0400 | [diff] [blame] | 50 | void *memset(void *s, int c, size_t n); |
Kevin O'Connor | 567e4e3 | 2008-04-05 11:37:51 -0400 | [diff] [blame] | 51 | void *memcpy(void *d1, const void *s1, size_t len); |
Kevin O'Connor | a4d3576 | 2008-03-08 15:43:03 -0500 | [diff] [blame] | 52 | |
Kevin O'Connor | 4b60c00 | 2008-02-25 22:29:55 -0500 | [diff] [blame] | 53 | static inline void |
| 54 | eoi_master_pic() |
| 55 | { |
| 56 | outb(PIC1_IRQ5, PORT_PIC1); |
| 57 | } |
| 58 | |
| 59 | static inline void |
| 60 | eoi_both_pics() |
| 61 | { |
| 62 | outb(PIC2_IRQ13, PORT_PIC2); |
| 63 | eoi_master_pic(); |
| 64 | } |
| 65 | |
Kevin O'Connor | 7a558e4 | 2008-03-11 20:38:33 -0400 | [diff] [blame] | 66 | // Call a function with a specified register state. Note that on |
| 67 | // return, the interrupt enable/disable flag may be altered. |
Kevin O'Connor | 38fcbfe | 2008-02-25 22:30:47 -0500 | [diff] [blame] | 68 | static inline |
| 69 | void call16(struct bregs *callregs) |
| 70 | { |
| 71 | asm volatile( |
Kevin O'Connor | 3a47a31 | 2008-03-01 14:46:37 -0500 | [diff] [blame] | 72 | #ifdef MODE16 |
Kevin O'Connor | 38fcbfe | 2008-02-25 22:30:47 -0500 | [diff] [blame] | 73 | "calll __call16\n" |
Kevin O'Connor | 3a47a31 | 2008-03-01 14:46:37 -0500 | [diff] [blame] | 74 | #else |
| 75 | "calll __call16_from32\n" |
| 76 | #endif |
Kevin O'Connor | 8ce2cd8 | 2008-03-02 08:48:05 -0500 | [diff] [blame] | 77 | : "+a" (callregs), "+m" (*callregs) |
| 78 | : |
Kevin O'Connor | 7a558e4 | 2008-03-11 20:38:33 -0400 | [diff] [blame] | 79 | : "ebx", "ecx", "edx", "esi", "edi", "ebp", "cc"); |
Kevin O'Connor | 38fcbfe | 2008-02-25 22:30:47 -0500 | [diff] [blame] | 80 | } |
| 81 | |
Kevin O'Connor | 3a47a31 | 2008-03-01 14:46:37 -0500 | [diff] [blame] | 82 | static inline |
| 83 | void __call16_int(struct bregs *callregs, u16 offset) |
| 84 | { |
Kevin O'Connor | 44c631d | 2008-03-02 11:24:36 -0500 | [diff] [blame] | 85 | callregs->cs = SEG_BIOS; |
Kevin O'Connor | 3a47a31 | 2008-03-01 14:46:37 -0500 | [diff] [blame] | 86 | callregs->ip = offset; |
| 87 | call16(callregs); |
| 88 | } |
| 89 | |
Kevin O'Connor | 38fcbfe | 2008-02-25 22:30:47 -0500 | [diff] [blame] | 90 | #ifdef MODE16 |
Kevin O'Connor | 3a47a31 | 2008-03-01 14:46:37 -0500 | [diff] [blame] | 91 | #define call16_int(nr, callregs) do { \ |
| 92 | extern void irq_trampoline_ ##nr (); \ |
| 93 | __call16_int((callregs), (u16)&irq_trampoline_ ##nr ); \ |
Kevin O'Connor | 38fcbfe | 2008-02-25 22:30:47 -0500 | [diff] [blame] | 94 | } while (0) |
| 95 | #else |
| 96 | #include "../out/rom16.offset.auto.h" |
Kevin O'Connor | 3a47a31 | 2008-03-01 14:46:37 -0500 | [diff] [blame] | 97 | #define call16_int(nr, callregs) \ |
| 98 | __call16_int((callregs), OFFSET_irq_trampoline_ ##nr ) |
Kevin O'Connor | 38fcbfe | 2008-02-25 22:30:47 -0500 | [diff] [blame] | 99 | #endif |
| 100 | |
Kevin O'Connor | f076a3e | 2008-02-25 22:25:15 -0500 | [diff] [blame] | 101 | // output.c |
Kevin O'Connor | 567e4e3 | 2008-04-05 11:37:51 -0400 | [diff] [blame] | 102 | void BX_PANIC(const char *fmt, ...) |
| 103 | __attribute__ ((format (printf, 1, 2))) |
| 104 | __attribute__ ((noreturn)); |
| 105 | void BX_INFO(const char *fmt, ...) |
| 106 | __attribute__ ((format (printf, 1, 2))); |
| 107 | void printf(const char *fmt, ...) |
| 108 | __attribute__ ((format (printf, 1, 2))); |
Kevin O'Connor | f076a3e | 2008-02-25 22:25:15 -0500 | [diff] [blame] | 109 | void __debug_enter(const char *fname, struct bregs *regs); |
Kevin O'Connor | 6c78122 | 2008-03-09 12:19:23 -0400 | [diff] [blame] | 110 | void __debug_fail(const char *fname, struct bregs *regs); |
Kevin O'Connor | 4ce6a49 | 2008-02-29 00:21:27 -0500 | [diff] [blame] | 111 | void __debug_stub(const char *fname, struct bregs *regs); |
Kevin O'Connor | ed12849 | 2008-03-11 11:14:59 -0400 | [diff] [blame] | 112 | void __debug_isr(const char *fname); |
Kevin O'Connor | f076a3e | 2008-02-25 22:25:15 -0500 | [diff] [blame] | 113 | #define debug_enter(regs) \ |
| 114 | __debug_enter(__func__, regs) |
Kevin O'Connor | 4ce6a49 | 2008-02-29 00:21:27 -0500 | [diff] [blame] | 115 | #define debug_stub(regs) \ |
| 116 | __debug_stub(__func__, regs) |
Kevin O'Connor | c65a380 | 2008-03-02 13:58:23 -0500 | [diff] [blame] | 117 | #define debug_isr(regs) \ |
Kevin O'Connor | ed12849 | 2008-03-11 11:14:59 -0400 | [diff] [blame] | 118 | __debug_isr(__func__) |
Kevin O'Connor | f076a3e | 2008-02-25 22:25:15 -0500 | [diff] [blame] | 119 | |
Kevin O'Connor | 6c78122 | 2008-03-09 12:19:23 -0400 | [diff] [blame] | 120 | // Frequently used return codes |
| 121 | #define RET_EUNSUPPORTED 0x86 |
| 122 | static inline void |
| 123 | set_success(struct bregs *regs) |
| 124 | { |
| 125 | set_cf(regs, 0); |
| 126 | } |
| 127 | |
| 128 | static inline void |
| 129 | set_code_success(struct bregs *regs) |
| 130 | { |
| 131 | regs->ah = 0; |
| 132 | set_cf(regs, 0); |
| 133 | } |
| 134 | |
Kevin O'Connor | 567e4e3 | 2008-04-05 11:37:51 -0400 | [diff] [blame] | 135 | void __set_fail(const char *fname, struct bregs *regs); |
| 136 | void __set_code_fail(const char *fname, struct bregs *regs, u8 code); |
Kevin O'Connor | 6c78122 | 2008-03-09 12:19:23 -0400 | [diff] [blame] | 137 | |
Kevin O'Connor | 567e4e3 | 2008-04-05 11:37:51 -0400 | [diff] [blame] | 138 | #define set_fail(regs) \ |
| 139 | __set_fail(__func__, (regs)) |
| 140 | #define set_code_fail(regs, code) \ |
| 141 | __set_code_fail(__func__, (regs), (code)) |
Kevin O'Connor | 6c78122 | 2008-03-09 12:19:23 -0400 | [diff] [blame] | 142 | |
Kevin O'Connor | f076a3e | 2008-02-25 22:25:15 -0500 | [diff] [blame] | 143 | // kbd.c |
| 144 | void handle_15c2(struct bregs *regs); |
Kevin O'Connor | bdce35f | 2008-02-26 21:33:14 -0500 | [diff] [blame] | 145 | |
Kevin O'Connor | 913cc2e | 2008-04-13 17:31:45 -0400 | [diff] [blame^] | 146 | // serial.c |
| 147 | void serial_setup(); |
| 148 | void lpt_setup(); |
| 149 | |
Kevin O'Connor | bdce35f | 2008-02-26 21:33:14 -0500 | [diff] [blame] | 150 | // clock.c |
| 151 | void handle_1583(struct bregs *regs); |
| 152 | |
Kevin O'Connor | 95b2f78 | 2008-03-05 19:52:06 -0500 | [diff] [blame] | 153 | // apm.c |
Kevin O'Connor | 44d6530 | 2008-03-08 11:34:46 -0500 | [diff] [blame] | 154 | void VISIBLE16 handle_1553(struct bregs *regs); |
Kevin O'Connor | 95b2f78 | 2008-03-05 19:52:06 -0500 | [diff] [blame] | 155 | |
Kevin O'Connor | a0dc296 | 2008-03-16 14:29:32 -0400 | [diff] [blame] | 156 | // pcibios.c |
| 157 | void handle_1ab1(struct bregs *regs); |
| 158 | |
Kevin O'Connor | a4d3576 | 2008-03-08 15:43:03 -0500 | [diff] [blame] | 159 | // util.c |
Kevin O'Connor | 2e7ab8b | 2008-03-29 14:29:35 -0400 | [diff] [blame] | 160 | u8 checksum(u8 *far_data, u32 len); |
Kevin O'Connor | a4d3576 | 2008-03-08 15:43:03 -0500 | [diff] [blame] | 161 | void usleep(u32 count); |
| 162 | |
| 163 | // rombios32.c |
| 164 | void rombios32_init(void); |
| 165 | |
Kevin O'Connor | e0113c9 | 2008-04-05 15:51:12 -0400 | [diff] [blame] | 166 | // boot.c |
| 167 | void printf_bootdev(u16 bootdev); |
| 168 | |
| 169 | // post_menu.c |
| 170 | void interactive_bootmenu(); |
| 171 | |
Kevin O'Connor | 786502d | 2008-02-27 10:41:41 -0500 | [diff] [blame] | 172 | #endif // util.h |