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author | Danny Holman <dholman@gymli.xyz> | 2021-01-24 21:10:57 -0600 |
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committer | Danny Holman <dholman@gymli.xyz> | 2021-01-24 21:10:57 -0600 |
commit | a4534660fecb1b571c24ad82e67bc6c2fb814cb9 (patch) | |
tree | 149984cb0e9a32765e63df0f696091817c2b6dd5 /arch/i386/kernel/pic.h | |
parent | dd6656f7132d1727a055035ca94945fa4fbaae58 (diff) |
x86: reorganize the i386 directory
Add structure to the internals of the x86 directory.
Signed-off-by: Danny Holman <dholman@gymli.xyz>
Diffstat (limited to 'arch/i386/kernel/pic.h')
-rw-r--r-- | arch/i386/kernel/pic.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/i386/kernel/pic.h b/arch/i386/kernel/pic.h new file mode 100644 index 0000000..da4a2ee --- /dev/null +++ b/arch/i386/kernel/pic.h @@ -0,0 +1,16 @@ +#ifndef PIC_H +#define PIC_H + +#include <stdint.h> + +static inline void outb(uint16_t port, uint8_t value) { + asm volatile("outb %0, %1" : : "a"(value), "Nd"(port)); +} + +static inline uint8_t inb(uint16_t port) { + uint8_t ret; + asm volatile("inb %1, %0" : "=a"(ret) : "Nd"(port)); + return ret; +} + +#endif |