hbc/wiipax/stub/common.h

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2016-11-23 06:35:12 +01:00
#ifndef _LOADER_H_
#define _LOADER_H_
#include <stddef.h>
// Basic types.
typedef unsigned char u8;
typedef signed char s8;
typedef unsigned short int u16;
typedef signed short int s16;
typedef unsigned int u32;
typedef signed int s32;
// Basic I/O.
static inline u32 read32(u32 addr) {
u32 x;
asm volatile("lwz %0,0(%1) ; sync" : "=r"(x) : "b"(0xc0000000 | addr));
return x;
}
static inline void write32(u32 addr, u32 x) {
asm("stw %0,0(%1) ; eieio" : : "r"(x), "b"(0xc0000000 | addr));
}
static inline u16 read16(u32 addr) {
u16 x;
asm volatile("lhz %0,0(%1) ; sync" : "=r"(x) : "b"(0xc0000000 | addr));
return x;
}
static inline u8 read8(u32 addr) {
u8 x;
asm volatile("lbz %0,0(%1) ; sync" : "=r"(x) : "b"(0xc0000000 | addr));
return x;
}
static inline void write16(u32 addr, u16 x) {
asm("sth %0,0(%1) ; eieio" : : "r"(x), "b"(0xc0000000 | addr));
}
static inline void write8(u32 addr, u8 x) {
asm("stb %0,0(%1) ; eieio" : : "r"(x), "b"(0xc0000000 | addr));
}
static inline void mask32(u32 addr, u32 clear, u32 set)
{
write32(addr, (read32(addr)&(~clear)) | set);
}
// Address mapping.
static inline u32 virt_to_phys(const void *p) {
return (u32)p & 0x7fffffff;
}
static inline void *phys_to_virt(u32 x) {
return (void *)(x | 0x80000000);
}
// Cache synchronisation.
void sync_before_read(void *p, u32 len);
void sync_after_write(const void *p, u32 len);
void sync_before_exec(const void *p, u32 len);
// Time.
void udelay(u32 us);
// Special purpose registers.
#define mtspr(n, x) do { asm("mtspr %1,%0" : : "r"(x), "i"(n)); } while (0)
#define mfspr(n) ({ \
u32 x; asm volatile("mfspr %0,%1" : "=r"(x) : "i"(n)); x; \
})
// Exceptions.
#ifdef NDEBUG
#define printf(...) { }
#else
void exception_init(void);
void gecko_init(void);
int printf(const char *fmt, ...);
#endif
// Debug: blink the tray led.
static inline void blink(void) {
write32(0x0d8000c0, read32(0x0d8000c0) ^ 0x20);
}
#endif