Skip to content

[Arm64, Apple] Apple arm64 syscall calling convention #7313

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Sep 12, 2025
Merged

[Arm64, Apple] Apple arm64 syscall calling convention #7313

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 6 additions & 3 deletions arch/arm64/arch_arm64.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2692,15 +2692,15 @@ class WindowsArm64SystemCallConvention : public CallingConvention
virtual bool IsEligibleForHeuristics() override { return false; }
};

class MacosArm64SystemCallConvention : public CallingConvention
class AppleArm64SystemCallConvention : public CallingConvention
{
public:
MacosArm64SystemCallConvention(Architecture* arch) : CallingConvention(arch, "macos-syscall") {}
AppleArm64SystemCallConvention(Architecture* arch) : CallingConvention(arch, "apple-syscall") {}


virtual vector<uint32_t> GetIntegerArgumentRegisters() override
{
return vector<uint32_t> {REG_X16, REG_X0, REG_X1, REG_X2, REG_X3, REG_X4, REG_X5};
return vector<uint32_t> {REG_X16, REG_X0, REG_X1, REG_X2, REG_X3, REG_X4, REG_X5, REG_X6, REG_X7, REG_X8};
}


Expand Down Expand Up @@ -3500,6 +3500,9 @@ extern "C"
conv = new WindowsArm64SystemCallConvention(arm64);
arm64->RegisterCallingConvention(conv);

conv = new AppleArm64SystemCallConvention(arm64);
arm64->RegisterCallingConvention(conv);

conv = new AppleArm64CallingConvention(arm64);
arm64->RegisterCallingConvention(conv);

Expand Down
9 changes: 9 additions & 0 deletions platform/mac/platform_mac.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -143,6 +143,10 @@ class MacArm64Platform: public Platform
RegisterFastcallCallingConvention(cc);
RegisterStdcallCallingConvention(cc);
}

cc = arch->GetCallingConventionByName("apple-syscall");
if (cc)
SetSystemCallConvention(cc);
}

virtual bool GetFallbackEnabled() override
Expand Down Expand Up @@ -232,6 +236,11 @@ class IOSArm64Platform: public Platform
RegisterFastcallCallingConvention(cc);
RegisterStdcallCallingConvention(cc);
}

cc = arch->GetCallingConventionByName("apple-syscall");
if (cc)
SetSystemCallConvention(cc);

}

virtual bool GetFallbackEnabled() override
Expand Down