44 lines
1.6 KiB
Markdown
44 lines
1.6 KiB
Markdown
## Syscall list
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This list is not complete, but the numbers and the arguments are most likely final
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- `exit(int)`
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- `void *mmap(void *addr, size_t length, int prot)`
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- `void munmap(void *addr, size_t length)`
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- `void closeHandle(void *handle)`
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- `void *duplicateHandle(void *handle)`
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- `void *createService(char name[16], int maxSessions)`
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- `void *connectToService(char name[16])`
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- `void *replyAndReceive(int * handleEventOut, void ** handles, int handleCount, uint8_t data[256])` - returns a handle if there is a new connection or if a handle has closed the connection
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- `void *create_shared(void **handle_out, void* addr, size_t length, int prot, void *tgt_process)` - returns a handle for the other process to map shared memory
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- `void *mmap_shared(void* handle, void* addr)`
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- `int fork()`
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- `int vfork()` - Used for threading
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- `int getpid()`
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- `int getppid()`
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- `int setppid()`
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## Example code
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Bare-metal (no libc) hello world
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int main() {
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auto tty_handle = connectToService("tty:u");
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if(!tty_handle)
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exit(1);
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union {
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struct {
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int cmd_id;
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char text[252];
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}__attribute__((packed))
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uint8_t data[256];
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} cmdbuf;
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cmdbuf.cmd_id = 1; //1 == puts()
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const char* s = "Hello, World!";
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int i;
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for(i=0;s[i];i++)
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cmdbuf.text[i]=s[i];
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cmdbuf.text[i]=0;
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replyAndReceive(nullptr, &tty_handle, 1, cmdbuf.data); //Passing nullptr to handleEventOut will not wrote a event handle number
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closeHandle(tty_handle);
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exit(1);
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}
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