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| author | Andreas Kling <kling@serenityos.org> | 2021-07-24 02:15:07 +0200 |
|---|---|---|
| committer | Andreas Kling <kling@serenityos.org> | 2021-07-25 14:08:50 +0200 |
| commit | deff554096652c461e62767b5e065e9d4c3ec9cc (patch) | |
| tree | 088a05402c14a1dcd2149bfc467d2721926f371c /Kernel/Arch/x86 | |
| parent | 9b78ae5149f80d38c3ee18eb3dbf78c05c487f7c (diff) | |
| download | serenity-deff554096652c461e62767b5e065e9d4c3ec9cc.zip | |
Kernel+LibSystem: Add a 4th syscall argument
Let's allow passing 4 function arguments to a syscall. The 4th argument
goes into ESI or RSI.
Diffstat (limited to 'Kernel/Arch/x86')
| -rw-r--r-- | Kernel/Arch/x86/RegisterState.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Kernel/Arch/x86/RegisterState.h b/Kernel/Arch/x86/RegisterState.h index b92fd38b66..21e9fe13cd 100644 --- a/Kernel/Arch/x86/RegisterState.h +++ b/Kernel/Arch/x86/RegisterState.h @@ -104,18 +104,20 @@ struct [[gnu::packed]] RegisterState { #endif } - void capture_syscall_params(FlatPtr& function, FlatPtr& arg1, FlatPtr& arg2, FlatPtr& arg3) const + void capture_syscall_params(FlatPtr& function, FlatPtr& arg1, FlatPtr& arg2, FlatPtr& arg3, FlatPtr& arg4) const { #if ARCH(I386) function = eax; arg1 = edx; arg2 = ecx; arg3 = ebx; + arg4 = esi; #else function = rax; arg1 = rdx; arg2 = rcx; arg3 = rbx; + arg4 = rsi; #endif } |