From fe30df6b8c398000c737b9370750dda5a4c24911 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= Date: Wed, 2 Oct 2024 08:14:36 +0200 Subject: [PATCH] std.os.linux: Add hexagon arch bits. --- lib/std/os/linux.zig | 5 +- lib/std/os/linux/hexagon.zig | 254 +++++++++++++++++++++++++++++++++++ 2 files changed, 257 insertions(+), 2 deletions(-) create mode 100644 lib/std/os/linux/hexagon.zig diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig index 58e13a9b12..197e2f3dbc 100644 --- a/lib/std/os/linux.zig +++ b/lib/std/os/linux.zig @@ -39,6 +39,7 @@ const arch_bits = switch (native_arch) { .x86_64 => @import("linux/x86_64.zig"), .aarch64, .aarch64_be => @import("linux/aarch64.zig"), .arm, .armeb, .thumb, .thumbeb => @import("linux/arm.zig"), + .hexagon => @import("linux/hexagon.zig"), .riscv32 => @import("linux/riscv32.zig"), .riscv64 => @import("linux/riscv64.zig"), .sparc64 => @import("linux/sparc64.zig"), @@ -277,7 +278,7 @@ pub const MAP = switch (native_arch) { UNINITIALIZED: bool = false, _: u5 = 0, }, - .s390x => packed struct(u32) { + .hexagon, .s390x => packed struct(u32) { TYPE: MAP_TYPE, FIXED: bool = false, ANONYMOUS: bool = false, @@ -441,7 +442,7 @@ pub const O = switch (native_arch) { TMPFILE: bool = false, _: u9 = 0, }, - .s390x => packed struct(u32) { + .hexagon, .s390x => packed struct(u32) { ACCMODE: ACCMODE = .RDONLY, _2: u4 = 0, CREAT: bool = false, diff --git a/lib/std/os/linux/hexagon.zig b/lib/std/os/linux/hexagon.zig new file mode 100644 index 0000000000..e9bf9ab57c --- /dev/null +++ b/lib/std/os/linux/hexagon.zig @@ -0,0 +1,254 @@ +const std = @import("../../std.zig"); +const iovec = std.posix.iovec; +const iovec_const = std.posix.iovec_const; +const linux = std.os.linux; +const SYS = linux.SYS; +const uid_t = std.os.linux.uid_t; +const gid_t = std.os.linux.gid_t; +const pid_t = std.os.linux.pid_t; +const sockaddr = linux.sockaddr; +const socklen_t = linux.socklen_t; +const timespec = std.os.linux.timespec; + +pub fn syscall0(number: SYS) usize { + return asm volatile ("trap0(#1)" + : [ret] "={r0}" (-> usize), + : [number] "{r6}" (@intFromEnum(number)), + : "memory" + ); +} + +pub fn syscall1(number: SYS, arg1: usize) usize { + return asm volatile ("trap0(#1)" + : [ret] "={r0}" (-> usize), + : [number] "{r6}" (@intFromEnum(number)), + [arg1] "{r0}" (arg1), + : "memory" + ); +} + +pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize { + return asm volatile ("trap0(#1)" + : [ret] "={r0}" (-> usize), + : [number] "{r6}" (@intFromEnum(number)), + [arg1] "{r0}" (arg1), + [arg2] "{r1}" (arg2), + : "memory" + ); +} + +pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize { + return asm volatile ("trap0(#1)" + : [ret] "={r0}" (-> usize), + : [number] "{r6}" (@intFromEnum(number)), + [arg1] "{r0}" (arg1), + [arg2] "{r1}" (arg2), + [arg3] "{r2}" (arg3), + : "memory" + ); +} + +pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize) usize { + return asm volatile ("trap0(#1)" + : [ret] "={r0}" (-> usize), + : [number] "{r6}" (@intFromEnum(number)), + [arg1] "{r0}" (arg1), + [arg2] "{r1}" (arg2), + [arg3] "{r2}" (arg3), + [arg4] "{r3}" (arg4), + : "memory" + ); +} + +pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) usize { + return asm volatile ("trap0(#1)" + : [ret] "={r0}" (-> usize), + : [number] "{r6}" (@intFromEnum(number)), + [arg1] "{r0}" (arg1), + [arg2] "{r1}" (arg2), + [arg3] "{r2}" (arg3), + [arg4] "{r3}" (arg4), + [arg5] "{r4}" (arg5), + : "memory" + ); +} + +pub fn syscall6( + number: SYS, + arg1: usize, + arg2: usize, + arg3: usize, + arg4: usize, + arg5: usize, + arg6: usize, +) usize { + return asm volatile ("trap0(#1)" + : [ret] "={r0}" (-> usize), + : [number] "{r6}" (@intFromEnum(number)), + [arg1] "{r0}" (arg1), + [arg2] "{r1}" (arg2), + [arg3] "{r2}" (arg3), + [arg4] "{r3}" (arg4), + [arg5] "{r4}" (arg5), + [arg6] "{r5}" (arg6), + : "memory" + ); +} + +pub fn clone() callconv(.Naked) usize { + // __clone(func, stack, flags, arg, ptid, tls, ctid) + // r0, r1, r2, r3, r4, r5, +0 + // + // syscall(SYS_clone, flags, stack, ptid, ctid, tls) + // r6 r0, r1, r2, r3, r4 + asm volatile ( + \\ allocframe(#8) + \\ + \\ r11 = r0 + \\ r10 = r3 + \\ + \\ r6 = #220 // SYS_clone + \\ r0 = r2 + \\ r1 = and(r1, #-8) + \\ r2 = r4 + \\ r3 = memw(r30 + #8) + \\ r4 = r5 + \\ trap0(#1) + \\ + \\ p0 = cmp.eq(r0, #0) + \\ if (!p0) dealloc_return + \\ + \\ r0 = r10 + \\ callr r11 + \\ + \\ r6 = #93 // SYS_exit + \\ r0 = #0 + \\ trap0(#1) + ); +} + +pub const restore = restore_rt; + +pub fn restore_rt() callconv(.Naked) noreturn { + asm volatile ( + \\ trap0(#0) + : + : [number] "{r6}" (@intFromEnum(SYS.rt_sigreturn)), + : "memory" + ); +} + +pub const F = struct { + pub const DUPFD = 0; + pub const GETFD = 1; + pub const SETFD = 2; + pub const GETFL = 3; + pub const SETFL = 4; + pub const GETLK = 5; + pub const SETLK = 6; + pub const SETLKW = 7; + pub const SETOWN = 8; + pub const GETOWN = 9; + pub const SETSIG = 10; + pub const GETSIG = 11; + + pub const RDLCK = 0; + pub const WRLCK = 1; + pub const UNLCK = 2; + + pub const SETOWN_EX = 15; + pub const GETOWN_EX = 16; + + pub const GETOWNER_UIDS = 17; +}; + +pub const timeval = extern struct { + sec: time_t, + usec: i32, +}; + +pub const Flock = extern struct { + type: i16, + whence: i16, + start: off_t, + len: off_t, + pid: pid_t, + __unused: [4]u8, +}; + +pub const msghdr = extern struct { + name: ?*sockaddr, + namelen: socklen_t, + iov: [*]iovec, + iovlen: i32, + __pad1: i32 = 0, + control: ?*anyopaque, + controllen: socklen_t, + __pad2: socklen_t = 0, + flags: i32, +}; + +pub const msghdr_const = extern struct { + name: ?*const sockaddr, + namelen: socklen_t, + iov: [*]const iovec_const, + iovlen: i32, + __pad1: i32 = 0, + control: ?*const anyopaque, + controllen: socklen_t, + __pad2: socklen_t = 0, + flags: i32, +}; + +pub const blksize_t = i32; +pub const nlink_t = u32; +pub const time_t = i32; +pub const mode_t = u32; +pub const off_t = i64; +pub const ino_t = u64; +pub const dev_t = u64; +pub const blkcnt_t = i64; + +// The `stat` definition used by the Linux kernel. +pub const Stat = extern struct { + dev: dev_t, + ino: ino_t, + mode: mode_t, + nlink: nlink_t, + uid: uid_t, + gid: gid_t, + rdev: dev_t, + __pad: u32, + size: off_t, + blksize: blksize_t, + __pad2: i32, + blocks: blkcnt_t, + atim: timespec, + mtim: timespec, + ctim: timespec, + __unused: [2]u32, + + pub fn atime(self: @This()) timespec { + return self.atim; + } + + pub fn mtime(self: @This()) timespec { + return self.mtim; + } + + pub fn ctime(self: @This()) timespec { + return self.ctim; + } +}; + +pub const Elf_Symndx = u32; + +pub const MMAP2_UNIT = 4096; + +pub const VDSO = void; + +/// TODO +pub const ucontext_t = void; + +/// TODO +pub const getcontext = {};