From bfe16de4be67565f1a1e7b1331fcbe3aedf9c54e Mon Sep 17 00:00:00 2001 From: Marvin Borner Date: Tue, 28 Apr 2020 19:15:47 +0200 Subject: Userspace rewrite -> IT WORKS! :) Finally, after many months of work and rewrites the syscalls with constant char pointers work now :D --- src/userspace/libc/syscall.h | 87 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 src/userspace/libc/syscall.h (limited to 'src/userspace/libc/syscall.h') diff --git a/src/userspace/libc/syscall.h b/src/userspace/libc/syscall.h new file mode 100644 index 0000000..7dfd28d --- /dev/null +++ b/src/userspace/libc/syscall.h @@ -0,0 +1,87 @@ +#ifndef MELVIX_SYSCALL_H +#define MELVIX_SYSCALL_H + +#include + +#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 -- cgit v1.2.3