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remove condition codes

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LLVM always assumes these are on. Zig backends do not observe them.

If Zig backends want to start using them, they can be introduced, one
arch at a time, with proper documentation.
This commit is contained in:
Andrew Kelley
2025-07-15 16:09:47 -07:00
parent de9c0e4580
commit 15f45e89a7
4 changed files with 19 additions and 18 deletions
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18
lib/std/os/linux/aarch64.zig
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@@ -18,7 +18,7 @@ pub fn syscall0(number: SYS) usize {
return asm volatile ("svc #0"
: [ret] "={x0}" (-> usize),
: [number] "{x8}" (@intFromEnum(number)),
: .{ .memory = true, .cc = true });
: .{ .memory = true });
}
pub fn syscall1(number: SYS, arg1: usize) usize {
@@ -26,7 +26,7 @@ pub fn syscall1(number: SYS, arg1: usize) usize {
: [ret] "={x0}" (-> usize),
: [number] "{x8}" (@intFromEnum(number)),
[arg1] "{x0}" (arg1),
: .{ .memory = true, .cc = true });
: .{ .memory = true });
}
pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize {
@@ -35,7 +35,7 @@ pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize {
: [number] "{x8}" (@intFromEnum(number)),
[arg1] "{x0}" (arg1),
[arg2] "{x1}" (arg2),
: .{ .memory = true, .cc = true });
: .{ .memory = true });
}
pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize {
@@ -45,7 +45,7 @@ pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize {
[arg1] "{x0}" (arg1),
[arg2] "{x1}" (arg2),
[arg3] "{x2}" (arg3),
: .{ .memory = true, .cc = true });
: .{ .memory = true });
}
pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize) usize {
@@ -56,7 +56,7 @@ pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize)
[arg2] "{x1}" (arg2),
[arg3] "{x2}" (arg3),
[arg4] "{x3}" (arg4),
: .{ .memory = true, .cc = true });
: .{ .memory = true });
}
pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) usize {
@@ -68,7 +68,7 @@ pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize,
[arg3] "{x2}" (arg3),
[arg4] "{x3}" (arg4),
[arg5] "{x4}" (arg5),
: .{ .memory = true, .cc = true });
: .{ .memory = true });
}
pub fn syscall6(
@@ -89,7 +89,7 @@ pub fn syscall6(
[arg4] "{x3}" (arg4),
[arg5] "{x4}" (arg5),
[arg6] "{x5}" (arg6),
: .{ .memory = true, .cc = true });
: .{ .memory = true });
}
pub fn clone() callconv(.naked) usize {
@@ -141,12 +141,12 @@ pub fn restore_rt() callconv(.naked) noreturn {
\\ svc #0
:
: [number] "i" (@intFromEnum(SYS.rt_sigreturn)),
: .{ .memory = true, .cc = true }),
: .{ .memory = true }),
else => asm volatile (
\\ svc #0
:
: [number] "{x8}" (@intFromEnum(SYS.rt_sigreturn)),
: .{ .memory = true, .cc = true }),
: .{ .memory = true }),
}
}