forked from PoliEcho-holding-org/kern
42 lines
997 B
C
42 lines
997 B
C
#ifndef SYSCALLNUMS_H
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#define SYSCALLNUMS_H
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#define MAX_SYSCALLS 9
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// TODO: Add malloc() and free() syscall wrappers??
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typedef enum {
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SYS_RESERVED,
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SYS_SLEEP,
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SYS_GETS,
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SYS_WRITE,
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SYS_OPEN,
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SYS_CLOSE,
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SYS_MALLOC,
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SYS_FREE,
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SYS_SEEK,
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} SYSCALL_NUMBERS;
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typedef enum {
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O_CREAT = 0x1, // Create if does not exist
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O_RDONLY = 0x2, // Read only
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O_WRONLY = 0x4, // Write only
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O_RDWR = 0x8, // Read and write
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O_APPEND = 0x10, // Always writes at the end (appends)
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O_TRUNC = 0x20, // Truncate file size and position to 0 on Open
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} OFLAGS;
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int write(int fd, const void* buf, unsigned int len) {
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int result = -1;
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__asm__ volatile ("int $0x80" : "=a"(result) : "a"(SYS_WRITE), "b"(fd), "c"(buf), "d"(len));
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return result;
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}
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int open(const char* path, int oflag) {
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int result = -1;
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__asm__ volatile ("int $0x80" : "=a"(result) : "a"(SYS_OPEN), "b"(path), "c"(oflag));
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return result;
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}
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#endif
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