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usingnamespace @import("../bits.zig");
pub fn syscall_pipe(fd: *[2]i32) usize {
return asm volatile (
\\ mov %[arg], %%g3
\\ t 0x6d
\\ bcc,pt %%xcc, 1f
\\ nop
\\ # Return the error code
\\ ba 2f
\\ neg %%o0
\\1:
\\ st %%o0, [%%g3+0]
\\ st %%o1, [%%g3+4]
\\ clr %%o0
\\2:
: [ret] "={o0}" (-> usize)
: [number] "{g1}" (@enumToInt(SYS.pipe)),
[arg] "r" (fd)
: "memory", "g3"
);
}
pub fn syscall_fork() usize {
// Linux/sparc64 fork() returns two values in %o0 and %o1:
// - On the parent's side, %o0 is the child's PID and %o1 is 0.
// - On the child's side, %o0 is the parent's PID and %o1 is 1.
// We need to clear the child's %o0 so that the return values
// conform to the libc convention.
return asm volatile (
\\ t 0x6d
\\ bcc,pt %%xcc, 1f
\\ nop
\\ ba 2f
\\ neg %%o0
\\ 1:
\\ # Clear the child's %%o0
\\ dec %%o1
\\ and %%o1, %%o0, %%o0
\\ 2:
: [ret] "={o0}" (-> usize)
: [number] "{g1}" (@enumToInt(SYS.fork))
: "memory", "xcc", "o1", "o2", "o3", "o4", "o5", "o7"
);
}
pub fn syscall0(number: SYS) usize {
return asm volatile (
\\ t 0x6d
\\ bcc,pt %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
: [number] "{g1}" (@enumToInt(number))
: "memory", "xcc", "o1", "o2", "o3", "o4", "o5", "o7"
);
}
pub fn syscall1(number: SYS, arg1: usize) usize {
return asm volatile (
\\ t 0x6d
\\ bcc,pt %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
: [number] "{g1}" (@enumToInt(number)),
[arg1] "{o0}" (arg1)
: "memory", "xcc", "o1", "o2", "o3", "o4", "o5", "o7"
);
}
pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize {
return asm volatile (
\\ t 0x6d
\\ bcc,pt %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
: [number] "{g1}" (@enumToInt(number)),
[arg1] "{o0}" (arg1),
[arg2] "{o1}" (arg2)
: "memory", "xcc", "o1", "o2", "o3", "o4", "o5", "o7"
);
}
pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize {
return asm volatile (
\\ t 0x6d
\\ bcc,pt %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
: [number] "{g1}" (@enumToInt(number)),
[arg1] "{o0}" (arg1),
[arg2] "{o1}" (arg2),
[arg3] "{o2}" (arg3)
: "memory", "xcc", "o1", "o2", "o3", "o4", "o5", "o7"
);
}
pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize) usize {
return asm volatile (
\\ t 0x6d
\\ bcc,pt %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
: [number] "{g1}" (@enumToInt(number)),
[arg1] "{o0}" (arg1),
[arg2] "{o1}" (arg2),
[arg3] "{o2}" (arg3),
[arg4] "{o3}" (arg4)
: "memory", "xcc", "o1", "o2", "o3", "o4", "o5", "o7"
);
}
pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) usize {
return asm volatile (
\\ t 0x6d
\\ bcc,pt %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
: [number] "{g1}" (@enumToInt(number)),
[arg1] "{o0}" (arg1),
[arg2] "{o1}" (arg2),
[arg3] "{o2}" (arg3),
[arg4] "{o3}" (arg4),
[arg5] "{o4}" (arg5)
: "memory", "xcc", "o1", "o2", "o3", "o4", "o5", "o7"
);
}
pub fn syscall6(
number: SYS,
arg1: usize,
arg2: usize,
arg3: usize,
arg4: usize,
arg5: usize,
arg6: usize,
) usize {
return asm volatile (
\\ t 0x6d
\\ bcc,pt %%xcc, 1f
\\ nop
\\ neg %%o0
\\ 1:
: [ret] "={o0}" (-> usize)
: [number] "{g1}" (@enumToInt(number)),
[arg1] "{o0}" (arg1),
[arg2] "{o1}" (arg2),
[arg3] "{o2}" (arg3),
[arg4] "{o3}" (arg4),
[arg5] "{o4}" (arg5),
[arg6] "{o5}" (arg6)
: "memory", "xcc", "o1", "o2", "o3", "o4", "o5", "o7"
);
}
/// This matches the libc clone function.
pub extern fn clone(func: fn (arg: usize) callconv(.C) u8, stack: usize, flags: usize, arg: usize, ptid: *i32, tls: usize, ctid: *i32) usize;
pub const restore = restore_rt;
pub fn restore_rt() callconv(.Naked) void {
return asm volatile ("t 0x6d"
:
: [number] "{g1}" (@enumToInt(SYS.rt_sigreturn))
: "memory", "xcc", "o0", "o1", "o2", "o3", "o4", "o5", "o7"
);
}
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