toni/zern
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

syscalls.zr

Browse Source
This commit is contained in:
Antoni Piasecki
2026-01-18 09:57:28 +01:00
parent 65913868b0
commit d0a4fb7293
5 changed files with 450 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

75
src/std/std.zr
View File

@@ -44,7 +44,7 @@ func mem.write64[x: ptr, d: i64] : void
_builtin_set64(x, d)
func io.print_sized[x: str, size: i64] : void
_builtin_syscall(1, 1, x, size) // write
_builtin_syscall(SYS_write, 1, x, size)
func io.print[x: str] : void
io.print_sized(x, str.len(x))
@@ -68,39 +68,39 @@ func io.println_i64[x: i64] : void
func io.read_char[] : u8
let c: u8 = 0
_builtin_syscall(0, 0, ^c, 1) // read
_builtin_syscall(SYS_read, 0, ^c, 1)
return c
func io.read_line[]: str
let MAX_SIZE = 60000
let buffer: str = mem.alloc(MAX_SIZE + 1)
let n: i64 = _builtin_syscall(0, 0, buffer, MAX_SIZE) // read
let n: i64 = _builtin_syscall(SYS_read, 0, buffer, MAX_SIZE)
if n < 0
return ""
str.set(buffer, n, 0)
return buffer
func io.read_file[path: str]: str
let fd: i64 = _builtin_syscall(257, -100, path, 0, 0) // openat
let fd: i64 = _builtin_syscall(SYS_openat, -100, path, 0, 0)
if fd <= 0
dbg.panic("failed to open file")
let size: i64 = _builtin_syscall(8, fd, 0, 2) // lseek to the end
_builtin_syscall(8, fd, 0, 0) // lseek back to start
let size: i64 = _builtin_syscall(SYS_lseek, fd, 0, 2)
_builtin_syscall(SYS_lseek, fd, 0, 0)
let buffer: str = mem.alloc(size + 1)
let n: i64 = _builtin_syscall(0, fd, buffer, size) // read
let n: i64 = _builtin_syscall(SYS_read, fd, buffer, size)
str.set(buffer, n, 0)
_builtin_syscall(3, fd) // close
_builtin_syscall(SYS_close, fd)
return buffer
func io.write_file[path: str, content: str] : void
let fd: ptr = _builtin_syscall(257, -100, path, 0x241, 0o644) // openat
let fd: ptr = _builtin_syscall(SYS_openat, -100, path, 0x241, 0o644)
if fd < 0
dbg.panic("failed to open file")
_builtin_syscall(1, fd, content, str.len(content)) // write
_builtin_syscall(3, fd) // close
_builtin_syscall(SYS_write, fd, content, str.len(content))
_builtin_syscall(SYS_close, fd)
func str.len[s: str] : i64
let i = 0
@@ -513,13 +513,13 @@ func alg.reduce[arr: array, fn: ptr, acc: i64] : i64
return acc
func os.exit[code: i64] : void
_builtin_syscall(60, code)
_builtin_syscall(SYS_exit, code)
func os.urandom[n: i64]: ptr
let buffer: ptr = mem.alloc(n)
let fd: i64 = _builtin_syscall(257, -100, "/dev/urandom", 0, 0) // openat
_builtin_syscall(0, fd, buffer, n) // read
_builtin_syscall(3, fd) // close
let fd: i64 = _builtin_syscall(SYS_openat, -100, "/dev/urandom", 0, 0)
_builtin_syscall(SYS_read, fd, buffer, n)
_builtin_syscall(SYS_close, fd)
return buffer
func os.urandom_i64[]: i64
@@ -530,7 +530,7 @@ func os.urandom_i64[]: i64
func os.time[] : i64
let tv: ptr = mem.alloc(16)
_builtin_syscall(96, tv, 0) // gettimeofday
_builtin_syscall(SYS_gettimeofday, tv, 0)
let seconds: i64 = mem.read64(tv)
let microseconds: i64 = mem.read64(tv + 8)
mem.free(tv)
@@ -538,15 +538,15 @@ func os.time[] : i64
// voodoo magic
func os.shell[command: str] : i64
let pid: i64 = _builtin_syscall(57) // fork
let pid: i64 = _builtin_syscall(SYS_fork)
if pid == 0
// leaky but not sure where can i free it
let argv: array = ["sh", "-c", command, 0]
_builtin_syscall(59, "/bin/sh", mem.read64(argv), _builtin_environ()) // execve
_builtin_syscall(60, 1) // exit
_builtin_syscall(SYS_execve, "/bin/sh", mem.read64(argv), _builtin_environ())
_builtin_syscall(SYS_exit, 1)
else
let status = 0
let wp: i64 = _builtin_syscall(61, pid, ^status, 0, 0) // waitpid
let wp: i64 = _builtin_syscall(SYS_wait4, pid, ^status, 0, 0)
if wp == -1
return -1
let st: i64 = status & 0xffffffff
@@ -557,14 +557,14 @@ func os.shell[command: str] : i64
return -(st & 0x7f)
func os.listdir[path: str] : array
let fd: i64 = _builtin_syscall(257, -100, path, 0, 0) // openat
let fd: i64 = _builtin_syscall(SYS_openat, -100, path, 0, 0)
if fd < 0
return []
let files: array = []
let buf: ptr = mem.alloc(1024)
while true
let n: i64 = _builtin_syscall(217, fd, buf, 1024) // getdents64
let n: i64 = _builtin_syscall(SYS_getdents64, fd, buf, 1024)
if n <= 0
break
@@ -586,17 +586,18 @@ func os.listdir[path: str] : array
pos = pos + len
mem.free(buf)
_builtin_syscall(3, fd) // close
_builtin_syscall(SYS_close, fd)
return files
func net.listen[packed_host: i64, port: i64] : i64
let s: i64 = _builtin_syscall(41, 2, 1, 0) // socket
let s: i64 = _builtin_syscall(SYS_socket, 2, 1, 0)
if s < 0
return -1
// setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
let optval = 1
if _builtin_syscall(54, s, 1, 2, ^optval, 8) < 0 // setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
_builtin_syscall(3, s) // close
if _builtin_syscall(SYS_setsockopt, s, 1, 2, ^optval, 8) < 0
_builtin_syscall(SYS_close, s)
return -1
let sa: ptr = mem.alloc(16)
@@ -610,14 +611,14 @@ func net.listen[packed_host: i64, port: i64] : i64
mem.write8(sa + 6, (packed_host >> 8) & 255)
mem.write8(sa + 7, packed_host & 255)
if _builtin_syscall(49, s, sa, 16) < 0 // bind
_builtin_syscall(3, s) // close
if _builtin_syscall(SYS_bind, s, sa, 16) < 0
_builtin_syscall(SYS_close, s)
mem.free(sa)
return -1
mem.free(sa)
if _builtin_syscall(50, s, 1) < 0 // listen
_builtin_syscall(3, s) // close
if _builtin_syscall(SYS_listen, s, 1) < 0
_builtin_syscall(SYS_close, s)
return -1
return s
@@ -629,7 +630,7 @@ func net.connect[host: str, port: i64] : i64
let ip_ptr: ptr = mem.read64(mem.read64(he + 24))
let s: i64 = _builtin_syscall(41, 2, 1, 0) // socket
let s: i64 = _builtin_syscall(SYS_socket, 2, 1, 0)
if s < 0
return -1
@@ -643,25 +644,25 @@ func net.connect[host: str, port: i64] : i64
mem.write8(sa + 6, ip_ptr[2])
mem.write8(sa + 7, ip_ptr[3])
if _builtin_syscall(42, s, sa, 16) < 0 // connect
if _builtin_syscall(SYS_connect, s, sa, 16) < 0
mem.free(sa)
_builtin_syscall(3, s) // close
_builtin_syscall(SYS_close, s)
return -1
mem.free(sa)
return s
func net.accept[s: i64] : i64
return _builtin_syscall(43, s, 0, 0)
return _builtin_syscall(SYS_accept, s, 0, 0)
func net.send[s: i64, data: str, size: i64] : void
_builtin_syscall(44, s, data, size, 0, 0, 0)
_builtin_syscall(SYS_sendto, s, data, size, 0, 0, 0)
func net.read[s: i64, buffer: ptr, size: i64] : i64
return _builtin_syscall(0, s, buffer, size)
return _builtin_syscall(SYS_read, s, buffer, size)
func net.close[s: i64] : void
_builtin_syscall(3, s)
_builtin_syscall(SYS_close, s)
func net.pack_addr[a: i64, b: i64, c: i64, d: i64] : i64
return (a << 24) | (b << 16) | (c << 8) | d