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system: Fix syscall return value constraint

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The previous constraint was making the compiler discard the return value when building in release mode.
This commit is contained in:
Gabriel 2025-02-22 22:57:10 +01:00
parent 6691f940e4
commit c268c48c8e
Signed by: asleepymoon
GPG Key ID: 7F4BD1EBD1D53E5A
1 changed files with 1 additions and 1 deletions
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system/lib/syscalls.zig
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@ -4,7 +4,7 @@ const target = @import("builtin").target;
fn syscall(num: kernel.SystemCall, arg0: u64, arg1: u64) i64 { fn syscall(num: kernel.SystemCall, arg0: u64, arg1: u64) i64 {
return switch (target.cpu.arch) { return switch (target.cpu.arch) {
.x86_64 => asm volatile ("int $66" .x86_64 => asm volatile ("int $66"
: [result] "=r" (-> i64), : [result] "={rax}" (-> i64),
: [num] "{rax}" (@intFromEnum(num)), : [num] "{rax}" (@intFromEnum(num)),
[arg0] "{rdi}" (arg0), [arg0] "{rdi}" (arg0),
[arg1] "{rsi}" (arg1), [arg1] "{rsi}" (arg1),