sysdeps/qword: Add sysdeps for qword

meson.build

@@ -11,7 +11,14 @@ libc_sources = [ ]
 disable_posix_option = false
 disable_linux_option = false
 
-subdir('sysdeps/managarm')
+# Process sysdeps first, as sysdeps might want to disable unsupported options.
+if host_machine.system() == 'managarm'
+	subdir('sysdeps/managarm')
+elif host_machine.system() == 'qword'
+	subdir('sysdeps/qword')
+else
+	error('No sysdeps defined for OS: ' + host_machine.system())
+endif
 
 internal_incl = include_directories('options/internal/include')
 internal_sources = [

sysdeps/qword/generic/file.cpp

@@ -0,0 +1,98 @@
+
+#include <bits/ensure.h>
+#include <mlibc/debug.hpp>
+#include <mlibc/sysdeps.hpp>
+
+namespace mlibc {
+
+void sys_libc_log(const char *message) {
+	unsigned long res;
+	asm volatile ("syscall" : "=a"(res)
+			: "a"(0), "D"(0), "S"(message)
+			: "rcx", "r11");
+}
+
+void sys_libc_panic() {
+	__builtin_trap();
+}
+
+int sys_tcb_set(void *pointer) {
+	return -1;
+}
+
+int sys_anon_allocate(size_t size, void **pointer) {
+	// The qword kernel wants us to allocate whole pages.
+	__ensure(!(size & 0xFFF));
+
+	void *res;
+	asm volatile ("syscall" : "=a"(res)
+			: "a"(6), "D"(0), "S"(size >> 12)
+			: "rcx", "r11");
+	if(!res)
+		return -1;
+	*pointer = res;
+	return 0;
+}
+
+int sys_anon_free(void *pointer, size_t size) {
+	return -1;
+}
+
+#ifndef MLIBC_BUILDING_RTDL
+void sys_exit(int status) {
+	__builtin_trap();
+}
+#endif
+
+#ifndef MLIBC_BUILDING_RTDL
+int sys_clock_get(int clock, time_t *secs, long *nanos) {
+	return -1;
+}
+#endif
+
+int sys_open(const char *path, int flags, int *fd) {
+	return -1;
+}
+
+int sys_close(int fd) {
+	return -1;
+}
+
+int sys_read(int fd, void *buf, size_t count, ssize_t *bytes_read) {
+	return -1;
+}
+
+#ifndef MLIBC_BUILDING_RTDL
+int sys_write(int fd, const void *buf, size_t count, ssize_t *bytes_written) {
+	return -1;
+}
+#endif
+
+int sys_seek(int fd, off_t offset, int whence, off_t *new_offset) {
+	return -1;
+}
+
+int sys_vm_map(void *hint, size_t size, int prot, int flags, int fd, off_t offset, void **window) {
+	return -1;
+}
+
+#ifndef MLIBC_BUILDING_RTDL
+int sys_fstat(int fd, struct stat *statbuf) {
+	return -1;
+}
+#endif
+
+#ifndef MLIBC_BUILDING_RTDL
+int sys_rename(const char *path, const char *new_path) {
+	return -1;
+}
+#endif
+
+#ifndef MLIBC_BUILDING_RTDL
+int sys_sigaction(int, const struct sigaction *__restrict, struct sigaction *__restrict) {
+	return -1;
+}
+#endif
+
+} // namespace mlibc
+

sysdeps/qword/include/bits/abi.h

@@ -0,0 +1,23 @@
+
+// reserve 3 bits for the access mode
+#define __MLIBC_O_ACCMODE 0x0007
+#define __MLIBC_O_EXEC 1
+#define __MLIBC_O_RDONLY 2
+#define __MLIBC_O_RDWR 3
+#define __MLIBC_O_SEARCH 4
+#define __MLIBC_O_WRONLY 5
+// all remaining flags get their own bit
+#define __MLIBC_O_APPEND 0x0008
+#define __MLIBC_O_CREAT 0x0010
+#define __MLIBC_O_DIRECTORY 0x0020
+#define __MLIBC_O_EXCL 0x0040
+#define __MLIBC_O_NOCTTY 0x0080
+#define __MLIBC_O_NOFOLLOW 0x0100
+#define __MLIBC_O_TRUNC 0x0200
+#define __MLIBC_O_NONBLOCK 0x0400
+#define __MLIBC_O_DSYNC 0x0800
+#define __MLIBC_O_RSYNC 0x1000
+#define __MLIBC_O_SYNC 0x2000
+#define __MLIBC_O_CLOEXEC 0x4000
+
+

sysdeps/qword/meson.build

@@ -0,0 +1,13 @@
+
+disable_posix_option = true
+disable_linux_option = true
+
+rtdl_sources += files(
+	'generic/file.cpp'
+)
+
+libc_include_dirs += include_directories('include')
+libc_sources += files(
+	'generic/file.cpp'
+)
+