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#ifndef MELVIX_SYSCALL_H
#define MELVIX_SYSCALL_H
#include <stdint.h>
#define DECL_SYSCALL0(fn) int syscall_##fn();
#define DECL_SYSCALL1(fn, p1) int syscall_##fn(p1);
#define DECL_SYSCALL2(fn, p1, p2) int syscall_##fn(p1, p2);
#define DECL_SYSCALL3(fn, p1, p2, p3) int syscall_##fn(p1, p2, p3);
#define DECL_SYSCALL4(fn, p1, p2, p3, p4) int syscall_##fn(p1, p2, p3, p4);
#define DECL_SYSCALL5(fn, p1, p2, p3, p4, p5) int syscall_##fn(p1, p2, p3, p4, p5);
#define DEFN_SYSCALL0(fn, num) \
int syscall_##fn() \
{ \
int a; \
asm volatile("int $0x80" : "=a"(a) : "0"(num)); \
return a; \
}
#define DEFN_SYSCALL1(fn, num, P1) \
int syscall_##fn(P1 p1) \
{ \
int a; \
asm volatile("int $0x80" : "=a"(a) : "0"(num), "b"((int)p1)); \
return a; \
}
#define DEFN_SYSCALL2(fn, num, P1, P2) \
int syscall_##fn(P1 p1, P2 p2) \
{ \
int a; \
asm volatile("int $0x80" : "=a"(a) : "0"(num), "b"((int)p1), "c"((int)p2)); \
return a; \
}
#define DEFN_SYSCALL3(fn, num, P1, P2, P3) \
int syscall_##fn(P1 p1, P2 p2, P3 p3) \
{ \
int a; \
asm volatile("int $0x80" \
: "=a"(a) \
: "0"(num), "b"((int)p1), "c"((int)p2), "d"((int)p3)); \
return a; \
}
#define DEFN_SYSCALL4(fn, num, P1, P2, P3, P4) \
int syscall_##fn(P1 p1, P2 p2, P3 p3, P4 p4) \
{ \
int a; \
asm volatile("int $0x80" \
: "=a"(a) \
: "0"(num), "b"((int)p1), "c"((int)p2), "d"((int)p3), "S"((int)p4)); \
return a; \
}
#define DEFN_SYSCALL5(fn, num) \
int syscall_##fn(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) \
{ \
int a; \
asm volatile("int $0x80" \
: "=a"(a) \
: "0"(num), "b"((int)p1), "c"((int)p2), "d"((int)p3), "S"((int)p4), \
"D"((int)p5)); \
return a; \
}
/**
* DECLARATIONS
*/
DECL_SYSCALL0(halt);
DECL_SYSCALL1(write, const char *);
DECL_SYSCALL1(read, const char *);
DECL_SYSCALL1(writec, char);
DECL_SYSCALL0(readc);
DECL_SYSCALL0(get_pointers);
DECL_SYSCALL1(alloc, uint32_t);
DECL_SYSCALL1(free, uint32_t);
#endif
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