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const plan9 = @import("../plan9.zig");
// TODO better inline asm
pub fn syscall1(sys: plan9.SYS, arg0: usize) usize {
return asm volatile (
\\push %%r8
\\push $0
\\syscall
\\pop %%r11
\\pop %%r11
: [ret] "={rax}" (-> usize),
: [arg0] "{r8}" (arg0),
[syscall_number] "{rbp}" (@intFromEnum(sys)),
: .{ .rcx = true, .rax = true, .rbp = true, .r11 = true, .memory = true });
}
pub fn syscall2(sys: plan9.SYS, arg0: usize, arg1: usize) usize {
return asm volatile (
\\push %%r9
\\push %%r8
\\push $0
\\syscall
\\pop %%r11
\\pop %%r11
\\pop %%r11
: [ret] "={rax}" (-> usize),
: [arg0] "{r8}" (arg0),
[arg1] "{r9}" (arg1),
[syscall_number] "{rbp}" (@intFromEnum(sys)),
: .{ .rcx = true, .rax = true, .rbp = true, .r11 = true, .memory = true });
}
pub fn syscall3(sys: plan9.SYS, arg0: usize, arg1: usize, arg2: usize) usize {
return asm volatile (
\\push %%r10
\\push %%r9
\\push %%r8
\\push $0
\\syscall
\\pop %%r11
\\pop %%r11
\\pop %%r11
\\pop %%r11
: [ret] "={rax}" (-> usize),
: [arg0] "{r8}" (arg0),
[arg1] "{r9}" (arg1),
[arg2] "{r10}" (arg2),
[syscall_number] "{rbp}" (@intFromEnum(sys)),
: .{ .rcx = true, .rax = true, .rbp = true, .r11 = true, .memory = true });
}
pub fn syscall4(sys: plan9.SYS, arg0: usize, arg1: usize, arg2: usize, arg3: usize) usize {
return asm volatile (
\\push %%r11
\\push %%r10
\\push %%r9
\\push %%r8
\\push $0
\\syscall
\\pop %%r11
\\pop %%r11
\\pop %%r11
\\pop %%r11
\\pop %%r11
: [ret] "={rax}" (-> usize),
: [arg0] "{r8}" (arg0),
[arg1] "{r9}" (arg1),
[arg2] "{r10}" (arg2),
[arg3] "{r11}" (arg3),
[syscall_number] "{rbp}" (@intFromEnum(sys)),
: .{ .rcx = true, .rax = true, .rbp = true, .r11 = true, .memory = true });
}
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