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calling_convention

Calling conventions

ARM64CC

Bases: CallingConvention

AAPCS calling convention for Aarch64

Source code in quokka/analysis/calling_convention.py 
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class ARM64CC(CallingConvention):
    """AAPCS calling convention for Aarch64"""

    name = "aapcs"
    argument_registers = [
        ArchARM64.regs.X0,
        ArchARM64.regs.X1,
        ArchARM64.regs.X2,
        ArchARM64.regs.X3,
        ArchARM64.regs.X4,
        ArchARM64.regs.X5,
        ArchARM64.regs.X6,
        ArchARM64.regs.X7,
    ]

    floating_point_registers: List[RegType] = []  # TODO
    caller_saved_registers: List[RegType] = []
    return_value = ArchARM64.regs.X0

ARMCC

Bases: CallingConvention

AAPCS calling convention for ARM

Source code in quokka/analysis/calling_convention.py 
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class ARMCC(CallingConvention):
    """AAPCS calling convention for ARM"""

    name = "aapcs"
    argument_registers = [
        ArchARM.regs.R0,
        ArchARM.regs.R1,
        ArchARM.regs.R2,
        ArchARM.regs.R3,
    ]
    floating_point_registers: List[RegType] = []  # TODO
    caller_saved_registers: List[RegType] = []
    return_value = ArchARM.regs.R0

CCdecl

Bases: CallingConvention

Cdecl calling convention

Source code in quokka/analysis/calling_convention.py 
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class CCdecl(CallingConvention):
    """Cdecl calling convention"""

    name = "cdecl"
    argument_registers: List[RegType] = []  # All arguments are on the stack
    floating_point_registers: List[RegType] = []  # Same
    caller_saved_registers = [
        ArchX86.regs.EAX,
        ArchX86.regs.ECX,
        ArchX86.regs.EDX,
    ]

    return_value = ArchX86.regs.EAX
    overflow_return = ArchX86.regs.EDX

CallingConvention

Base class for a calling convention

Source code in quokka/analysis/calling_convention.py 
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class CallingConvention:
    """Base class for a calling convention"""

    name: str
    argument_registers: List[RegType]
    floating_point_registers: List[RegType]
    caller_saved_registers: List[RegType]
    callee_saved: bool = False

    return_value: RegType
    overflow_return: RegType

Fastcall

Bases: CallingConvention

Fastcall calling convention

Source code in quokka/analysis/calling_convention.py 
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class Fastcall(CallingConvention):
    """Fastcall calling convention"""

    name = "fastcall"
    argument_registers = [ArchX86.regs.ECX, ArchX86.regs.EDX]
    floating_point_registers = [ArchX86.regs.ST0, ArchX86.regs.ST1]  # TODO(dm) check
    caller_saved_registers = [
        ArchX86.regs.EBX,
        ArchX86.regs.EBX,
        ArchX86.regs.ESI,
        ArchX86.regs.EDI,
    ]

    return_value = ArchX86.regs.EAX
    overflow_return = ArchX86.regs.EDX

MicrosoftAMD64

Bases: CallingConvention

Microsoft 64 calling convention

Source code in quokka/analysis/calling_convention.py 
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class MicrosoftAMD64(CallingConvention):
    """Microsoft 64 calling convention"""

    name = "ms"
    argument_registers = [
        ArchX64.regs.RCX,
        ArchX64.regs.RDX,
        ArchX64.regs.R8,
        ArchX64.regs.R9,
    ]

    floating_point_registers = [
        ArchX64.regs.XMM0,
        ArchX64.regs.XMM1,
        ArchX64.regs.XMM2,
        ArchX64.regs.XMM3,
    ]

    return_value = ArchX64.regs.RAX
    overflow_return = ArchX64.regs.RDX

Stdcall

Bases: CCdecl

Stdcall calling convention

Source code in quokka/analysis/calling_convention.py 
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class Stdcall(CCdecl):
    """Stdcall calling convention"""

    name = "stdcall"
    callee_saved = True

SystemVAMD

Bases: CallingConvention

SysV calling convention

Source code in quokka/analysis/calling_convention.py 
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class SystemVAMD(CallingConvention):
    """SysV calling convention"""

    name = "sysv"
    argument_registers = [
        ArchX64.regs.RDI,
        ArchX64.regs.RSI,
        ArchX64.regs.RDX,
        ArchX64.regs.RCX,
        ArchX64.regs.R8,
        ArchX64.regs.R9,
    ]

    floating_point_registers = [
        ArchX64.regs.XMM0,
        ArchX64.regs.XMM1,
        ArchX64.regs.XMM2,
        ArchX64.regs.XMM3,
        ArchX64.regs.XMM4,
        ArchX64.regs.XMM5,
        ArchX64.regs.XMM6,
        ArchX64.regs.XMM7,
    ]

    caller_saved_registers = argument_registers + [
        ArchX64.regs.R10,
        ArchX64.regs.R11,
        ArchX64.regs.RAX,
    ]

    return_value = ArchX64.regs.RAX
    overflow_return = ArchX64.regs.RDX