diff options
Diffstat (limited to 'src/kernel/include/sys.h')
| -rw-r--r-- | src/kernel/include/sys.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/kernel/include/sys.h b/src/kernel/include/sys.h index 365e709..944df96 100644 --- a/src/kernel/include/sys.h +++ b/src/kernel/include/sys.h @@ -15,6 +15,22 @@ static inline void outl(uint16_t port, uint32_t value) { asm volatile("outl %1, %0" : : "dN"(port), "a"(value)); } +static inline void outsb(uint16_t port, const void *addr, size_t cnt) { + // write cnt bytes to port + asm volatile ("rep outsb" : "+S" (addr), "+c" (cnt) : "d" (port)); +} + +static inline void outsw(uint16_t port, const void *addr, size_t cnt) { + // write cnt words to port + asm volatile ("rep outsw" : "+S" (addr), "+c" (cnt) : "d" (port)); +} + +static inline void outsl (uint16_t port, const void *addr, size_t cnt) { + // write cnt longwords to port + asm volatile ("rep outsl" : "+S" (addr), "+c" (cnt) : "d" (port)); +} + + static inline uint8_t inb(uint16_t port) { uint8_t ret; asm volatile("inb %1, %0" : "=a"(ret) : "dN"(port)); @@ -33,6 +49,21 @@ static inline uint32_t inl(uint16_t port) { return ret; } +static inline void insb(uint16_t port, void *addr, size_t cnt) { + // read cnt bytes from port and put them at addr + asm volatile ("rep insb" : "+D" (addr), "+c" (cnt) : "d" (port) : "memory"); +} + +static inline void insw(uint16_t port, void *addr, size_t cnt) { + // read cnt words from port and put them at addr + asm volatile ("rep insw" : "+D" (addr), "+c" (cnt) : "d" (port) : "memory"); +} + +static inline void insl(uint16_t port, void *addr, size_t cnt) { + // read cnt longwords from port and put them at addr + asm volatile ("rep insl" : "+D" (addr), "+c" (cnt) : "d" (port) : "memory"); +} + static inline void invlpg(void* addr) { asm volatile("invlpg (%0)" : : "r"(addr) : "memory"); } |