1 // Basic x86 asm functions and function defs.
3 // Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
5 // This file may be distributed under the terms of the GNU LGPLv3 license.
9 #include "types.h" // u32
11 static inline void irq_disable(void)
13 asm volatile("cli": : :"memory");
16 static inline void irq_enable(void)
18 asm volatile("sti": : :"memory");
21 static inline unsigned long irq_save(void)
24 asm volatile("pushfl ; popl %0" : "=g" (flags));
29 static inline void irq_restore(unsigned long flags)
31 asm volatile("pushl %0 ; popfl" : : "g" (flags) : "memory", "cc");
34 static inline void cpu_relax(void)
36 asm volatile("rep ; nop": : :"memory");
39 static inline void nop(void)
44 static inline void hlt(void)
49 static inline void wbinvd(void)
51 asm volatile("wbinvd");
54 static inline void cpuid(u32 index, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx)
57 : "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx)
61 static inline u64 rdtscll(void)
64 asm volatile("rdtsc" : "=A" (val));
69 inline u32 stack_hop(u32 eax, u32 edx, u32 ecx, void *func);
70 u8 checksum_far(u16 buf_seg, void *buf_far, u32 len);
71 u8 checksum(void *buf, u32 len);
72 int memcmp(const void *s1, const void *s2, size_t n);
73 size_t strlen(const char *s);
74 int strcmp(const char *s1, const char *s2);
75 void *memset(void *s, int c, size_t n);
76 void *memcpy(void *d1, const void *s1, size_t len);
77 inline void memcpy_far(u16 d_seg, void *d_far
78 , u16 s_seg, const void *s_far, size_t len);
79 void *memmove(void *d, const void *s, size_t len);
80 char *strtcpy(char *dest, const char *src, size_t len);
82 inline void call16(struct bregs *callregs);
83 inline void call16big(struct bregs *callregs);
84 inline void __call16_int(struct bregs *callregs, u16 offset);
85 #define call16_int(nr, callregs) do { \
86 extern void irq_trampoline_ ##nr (); \
87 __call16_int((callregs), (u32)&irq_trampoline_ ##nr ); \
89 inline void call16_simpint(int nr, u32 *eax, u32 *flags);
90 void usleep(u32 usec);
91 int get_keystroke(int msec);
94 void debug_serial_setup();
95 void panic(const char *fmt, ...)
96 __attribute__ ((format (printf, 1, 2)))
97 __attribute__ ((noreturn));
98 void printf(const char *fmt, ...)
99 __attribute__ ((format (printf, 1, 2)));
100 void __dprintf(const char *fmt, ...)
101 __attribute__ ((format (printf, 1, 2)));
102 #define dprintf(lvl, fmt, args...) do { \
103 if (CONFIG_DEBUG_LEVEL && (lvl) <= CONFIG_DEBUG_LEVEL) \
104 __dprintf((fmt) , ##args ); \
106 void __debug_enter(struct bregs *regs, const char *fname);
107 void __debug_stub(struct bregs *regs, int lineno, const char *fname);
108 void __debug_isr(const char *fname);
109 #define debug_enter(regs, lvl) do { \
110 if ((lvl) && (lvl) <= CONFIG_DEBUG_LEVEL) \
111 __debug_enter((regs), __func__); \
113 #define debug_isr(lvl) do { \
114 if ((lvl) && (lvl) <= CONFIG_DEBUG_LEVEL) \
115 __debug_isr(__func__); \
117 #define debug_stub(regs) \
118 __debug_stub((regs), __LINE__, __func__)
119 void hexdump(void *d, int len);
123 void handle_15c2(struct bregs *regs);
130 extern u64 RamSizeOver4G;
139 void ndelay(u32 count);
140 void udelay(u32 count);
141 void mdelay(u32 count);
142 u64 calc_future_tsc(u32 msecs);
143 void handle_1583(struct bregs *regs);
144 void handle_1586(struct bregs *regs);
147 void VISIBLE16 handle_1553(struct bregs *regs);
150 void handle_1ab1(struct bregs *regs);
153 void make_bios_writable();
154 void make_bios_readonly();
157 void pci_bios_setup(void);
164 void smp_probe_setup(void);
167 void smbios_init(void);
170 const char *cbfs_findNprefix(const char *prefix, int n);
171 void *cb_find_optionrom(u32 vendev);
172 void cbfs_run_payload(const char *filename);
173 void coreboot_setup();
179 void call_bcv(u16 seg, u16 ip);
181 void optionrom_setup();
187 #define PNP_SIGNATURE 0x506e5024 // $PnP
188 u16 get_pnp_offset();
192 void mtrr_setup(void);
195 void reset_vector() __attribute__ ((noreturn));
198 extern u8 BiosChecksum;