diff options
| author | Marvin Borner | 2020-04-28 19:15:47 +0200 |
|---|---|---|
| committer | Marvin Borner | 2020-04-28 19:15:47 +0200 |
| commit | bfe16de4be67565f1a1e7b1331fcbe3aedf9c54e (patch) | |
| tree | 1bc7450acb82410753e34da30cb9f44d19b9e92b /src/userspace/libc | |
| parent | 4b8518b4e791c68154ec52badcc921b62afafb49 (diff) | |
Userspace rewrite -> IT WORKS! :)
Finally, after many months of work and rewrites the syscalls with
constant char pointers work now :D
Diffstat (limited to 'src/userspace/libc')
| -rw-r--r-- | src/userspace/libc/syscall.c | 20 | ||||
| -rw-r--r-- | src/userspace/libc/syscall.h | 87 |
2 files changed, 107 insertions, 0 deletions
diff --git a/src/userspace/libc/syscall.c b/src/userspace/libc/syscall.c new file mode 100644 index 0000000..c147703 --- /dev/null +++ b/src/userspace/libc/syscall.c @@ -0,0 +1,20 @@ +#include <syscall.h> + +/** + * DEFINITIONS + */ +DEFN_SYSCALL0(halt, 0); + +DEFN_SYSCALL1(write, 1, const char *); + +DEFN_SYSCALL1(read, 2, const char *); + +DEFN_SYSCALL1(writec, 3, char); + +DEFN_SYSCALL0(readc, 4); + +DEFN_SYSCALL0(get_pointers, 5); + +DEFN_SYSCALL1(alloc, 6, uint32_t); + +DEFN_SYSCALL1(free, 7, uint32_t); 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 <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 |