diff options
Diffstat (limited to 'libc/sys.c')
| -rw-r--r-- | libc/sys.c | 130 |
1 files changed, 119 insertions, 11 deletions
@@ -16,30 +16,35 @@ errno = -ret; \ return -1; \ } \ + errno = 0; \ return ret -int sys0(enum sys num) +s32 sys0(enum sys num); +s32 sys0(enum sys num) { int a; __asm__ volatile("int $0x80" : "=a"(a) : "0"(num)); ERRIFY(a); } -int sys1(enum sys num, int d1) +s32 sys1(enum sys num, int d1); +s32 sys1(enum sys num, int d1) { int a; __asm__ volatile("int $0x80" : "=a"(a) : "0"(num), "b"((int)d1)); ERRIFY(a); } -int sys2(enum sys num, int d1, int d2) +s32 sys2(enum sys num, int d1, int d2); +s32 sys2(enum sys num, int d1, int d2) { int a; __asm__ volatile("int $0x80" : "=a"(a) : "0"(num), "b"((int)d1), "c"((int)d2)); ERRIFY(a); } -int sys3(enum sys num, int d1, int d2, int d3) +s32 sys3(enum sys num, int d1, int d2, int d3); +s32 sys3(enum sys num, int d1, int d2, int d3) { int a; __asm__ volatile("int $0x80" @@ -48,7 +53,8 @@ int sys3(enum sys num, int d1, int d2, int d3) ERRIFY(a); } -int sys4(enum sys num, int d1, int d2, int d3, int d4) +s32 sys4(enum sys num, int d1, int d2, int d3, int d4); +s32 sys4(enum sys num, int d1, int d2, int d3, int d4) { int a; __asm__ volatile("int $0x80" @@ -57,7 +63,8 @@ int sys4(enum sys num, int d1, int d2, int d3, int d4) ERRIFY(a); } -int sys5(enum sys num, int d1, int d2, int d3, int d4, int d5) +s32 sys5(enum sys num, int d1, int d2, int d3, int d4, int d5); +s32 sys5(enum sys num, int d1, int d2, int d3, int d4, int d5) { int a; __asm__ volatile("int $0x80" @@ -67,17 +74,118 @@ int sys5(enum sys num, int d1, int d2, int d3, int d4, int d5) ERRIFY(a); } -int sysv(enum sys num, ...) +/** + * Syscalls + */ + +void *sys_alloc(u32 size) +{ + return (void *)sys1(SYS_ALLOC, (int)size); +} + +void sys_free(void *ptr, u32 size) +{ + sys2(SYS_FREE, (int)ptr, (int)size); +} + +void loop(void) +{ + sys0(SYS_LOOP); +} + +s32 read(const char *path, void *buf, u32 offset, u32 count) +{ + return sys4(SYS_READ, (int)path, (int)buf, (int)offset, (int)count); +} + +s32 write(const char *path, const void *buf, u32 offset, u32 count) +{ + return sys4(SYS_WRITE, (int)path, (int)buf, (int)offset, (int)count); +} + +s32 ioctl(const char *path, ...) { va_list ap; - int args[5]; + int args[4] = { 0 }; - va_start(ap, num); - for (int i = 0; i < 5; i++) + va_start(ap, path); + for (int i = 0; i < 4; i++) args[i] = va_arg(ap, int); va_end(ap); - return sys5(num, args[0], args[1], args[2], args[3], args[4]); + return sys5(SYS_IOCTL, (int)path, args[0], args[1], args[2], args[3]); +} + +s32 stat(const char *path, struct stat *buf) +{ + return sys2(SYS_STAT, (int)path, (int)buf); +} + +s32 poll(const char **files) +{ + return sys1(SYS_POLL, (int)files); +} + +s32 exec(const char *path, ...) +{ + va_list ap; + int args[4] = { 0 }; + + va_start(ap, path); + for (int i = 0; i < 4; i++) + args[i] = va_arg(ap, int); + va_end(ap); + + return sys5(SYS_EXEC, (int)path, args[0], args[1], args[2], args[3]); +} + +s32 yield(void) +{ + return sys0(SYS_YIELD); +} + +static void atexit_trigger(void); +void exit(s32 status) +{ + atexit_trigger(); + sys1(SYS_EXIT, (int)status); + while (1) + yield(); +} + +s32 boot(u32 cmd) +{ + return sys2(SYS_BOOT, SYS_BOOT_MAGIC, cmd); +} + +u32 time(void) +{ + return (u32)sys0(SYS_TIME); +} + +/** + * At exit + */ + +#define ATEXIT_MAX 32 + +static u32 slot = 0; +static void (*funcs[ATEXIT_MAX])(void) = { 0 }; + +static void atexit_trigger(void) +{ + while (slot-- > 0) { + if (funcs[slot]) { + funcs[slot](); + funcs[slot] = NULL; + } + } +} + +void atexit(void (*func)(void)) +{ + if (slot < ATEXIT_MAX) + funcs[slot++] = func; } #endif |