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std: add loongarch64 support (ziglang#20915)
Co-authored-by: Alex Rønne Petersen <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,203 @@ | ||
| const std = @import("../../std.zig"); | ||
| const linux = std.os.linux; | ||
| const SYS = linux.SYS; | ||
| const iovec = std.os.iovec; | ||
| const uid_t = linux.uid_t; | ||
| const gid_t = linux.gid_t; | ||
| const stack_t = linux.stack_t; | ||
| const sigset_t = linux.sigset_t; | ||
|
|
||
| pub fn syscall0(number: SYS) usize { | ||
| return asm volatile ( | ||
| \\ syscall 0 | ||
| : [ret] "={$r4}" (-> usize), | ||
| : [number] "{$r11}" (@intFromEnum(number)), | ||
| : "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8", "memory" | ||
| ); | ||
| } | ||
|
|
||
| pub fn syscall1(number: SYS, arg1: usize) usize { | ||
| return asm volatile ( | ||
| \\ syscall 0 | ||
| : [ret] "={$r4}" (-> usize), | ||
| : [number] "{$r11}" (@intFromEnum(number)), | ||
| [arg1] "{$r4}" (arg1), | ||
| : "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8", "memory" | ||
| ); | ||
| } | ||
|
|
||
| pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize { | ||
| return asm volatile ( | ||
| \\ syscall 0 | ||
| : [ret] "={$r4}" (-> usize), | ||
| : [number] "{$r11}" (@intFromEnum(number)), | ||
| [arg1] "{$r4}" (arg1), | ||
| [arg2] "{$r5}" (arg2), | ||
| : "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8", "memory" | ||
| ); | ||
| } | ||
|
|
||
| pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize { | ||
| return asm volatile ( | ||
| \\ syscall 0 | ||
| : [ret] "={$r4}" (-> usize), | ||
| : [number] "{$r11}" (@intFromEnum(number)), | ||
| [arg1] "{$r4}" (arg1), | ||
| [arg2] "{$r5}" (arg2), | ||
| [arg3] "{$r6}" (arg3), | ||
| : "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8", "memory" | ||
| ); | ||
| } | ||
|
|
||
| pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize) usize { | ||
| return asm volatile ( | ||
| \\ syscall 0 | ||
| : [ret] "={$r4}" (-> usize), | ||
| : [number] "{$r11}" (@intFromEnum(number)), | ||
| [arg1] "{$r4}" (arg1), | ||
| [arg2] "{$r5}" (arg2), | ||
| [arg3] "{$r6}" (arg3), | ||
| [arg4] "{$r7}" (arg4), | ||
| : "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8", "memory" | ||
| ); | ||
| } | ||
|
|
||
| pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) usize { | ||
| return asm volatile ( | ||
| \\ syscall 0 | ||
| : [ret] "={$r4}" (-> usize), | ||
| : [number] "{$r11}" (@intFromEnum(number)), | ||
| [arg1] "{$r4}" (arg1), | ||
| [arg2] "{$r5}" (arg2), | ||
| [arg3] "{$r6}" (arg3), | ||
| [arg4] "{$r7}" (arg4), | ||
| [arg5] "{$r8}" (arg5), | ||
| : "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8", "memory" | ||
| ); | ||
| } | ||
|
|
||
| pub fn syscall6( | ||
| number: SYS, | ||
| arg1: usize, | ||
| arg2: usize, | ||
| arg3: usize, | ||
| arg4: usize, | ||
| arg5: usize, | ||
| arg6: usize, | ||
| ) usize { | ||
| return asm volatile ( | ||
| \\ syscall 0 | ||
| : [ret] "={$r4}" (-> usize), | ||
| : [number] "{$r11}" (@intFromEnum(number)), | ||
| [arg1] "{$r4}" (arg1), | ||
| [arg2] "{$r5}" (arg2), | ||
| [arg3] "{$r6}" (arg3), | ||
| [arg4] "{$r7}" (arg4), | ||
| [arg5] "{$r8}" (arg5), | ||
| [arg6] "{$r9}" (arg6), | ||
| : "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8", "memory" | ||
| ); | ||
| } | ||
|
|
||
| pub fn clone() callconv(.Naked) usize { | ||
| // __clone(func, stack, flags, arg, ptid, tls, ctid) | ||
| // a0, a1, a2, a3, a4, a5, a6 | ||
| // sys_clone(flags, stack, ptid, ctid, tls) | ||
| // a0, a1, a2, a3, a4 | ||
| asm volatile ( | ||
| \\ bstrins.d $a1, $zero, 3, 0 # stack to 16 align | ||
| \\ | ||
| \\ # Save function pointer and argument pointer on new thread stack | ||
| \\ addi.d $a1, $a1, -16 | ||
| \\ st.d $a0, $a1, 0 # save function pointer | ||
| \\ st.d $a3, $a1, 8 # save argument pointer | ||
| \\ or $a0, $a2, $zero | ||
| \\ or $a2, $a4, $zero | ||
| \\ or $a3, $a6, $zero | ||
| \\ or $a4, $a5, $zero | ||
| \\ ori $a7, $zero, 220 # SYS_clone | ||
| \\ syscall 0 # call clone | ||
| \\ | ||
| \\ beqz $a0, 1f # whether child process | ||
| \\ jirl $zero, $ra, 0 # parent process return | ||
| \\1: | ||
| \\ ld.d $t8, $sp, 0 # function pointer | ||
| \\ ld.d $a0, $sp, 8 # argument pointer | ||
| \\ jirl $ra, $t8, 0 # call the user's function | ||
| \\ ori $a7, $zero, 93 # SYS_exit | ||
| \\ syscall 0 # child process exit | ||
| ); | ||
| } | ||
|
|
||
| pub const restore = restore_rt; | ||
|
|
||
| pub fn restore_rt() callconv(.Naked) noreturn { | ||
| asm volatile ( | ||
| \\ or $a7, $zero, %[number] | ||
| \\ syscall 0 | ||
| : | ||
| : [number] "r" (@intFromEnum(SYS.rt_sigreturn)), | ||
| : "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8", "memory" | ||
| ); | ||
| } | ||
|
|
||
| pub const blksize_t = i32; | ||
| pub const nlink_t = u32; | ||
| pub const time_t = i64; | ||
| pub const mode_t = u32; | ||
| pub const off_t = i64; | ||
| pub const ino_t = u64; | ||
| pub const dev_t = u32; | ||
| pub const blkcnt_t = i64; | ||
|
|
||
| pub const timeval = extern struct { | ||
| tv_sec: time_t, | ||
| tv_usec: i64, | ||
| }; | ||
|
|
||
| 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 VDSO = struct { | ||
| pub const CGT_SYM = "__vdso_clock_gettime"; | ||
| pub const CGT_VER = "LINUX_5.10"; | ||
| }; | ||
|
|
||
| pub const mcontext_t = extern struct { | ||
| pc: u64, | ||
| regs: [32]u64, | ||
| flags: u32, | ||
| extcontext: [0]u64 align(16), | ||
| }; | ||
|
|
||
| pub const ucontext_t = extern struct { | ||
| flags: c_ulong, | ||
| link: ?*ucontext_t, | ||
| stack: stack_t, | ||
| sigmask: sigset_t, | ||
| _pad: [1024 / 8 - @sizeOf(sigset_t)]u8, | ||
| mcontext: mcontext_t, | ||
| }; | ||
|
|
||
| pub const Elf_Symndx = u32; |