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; Licensed to the .NET Foundation under one or more agreements.
; The .NET Foundation licenses this file to you under the MIT license.
; See the LICENSE file in the project root for more information.
; ==++==
;
;
; ==--==
; ***********************************************************************
; File: JitHelpers_InlineGetAppDomain.asm, see history in jithelp.asm
;
; Notes: These routinues will be patched at runtime with the location in
; the TLS to find the AppDomain* and are the fastest implementation
; of their specific functionality.
; ***********************************************************************
include AsmMacros.inc
include asmconstants.inc
; Min amount of stack space that a nested function should allocate.
MIN_SIZE equ 28h
; Macro to create a patchable inline GetAppdomain, if we decide to create patchable
; high TLS inline versions then just change this macro to make sure to create enough
; space in the asm to patch the high TLS getter instructions.
PATCHABLE_INLINE_GETAPPDOMAIN macro Reg, PatchLabel
PATCH_LABEL PatchLabel
mov Reg, gs:[OFFSET__TEB__TlsSlots]
endm
extern JIT_GetSharedNonGCStaticBase_Helper:proc
extern JIT_GetSharedGCStaticBase_Helper:proc
LEAF_ENTRY JIT_GetSharedNonGCStaticBase_InlineGetAppDomain, _TEXT
; Check if rcx (moduleDomainID) is not a moduleID
mov rax, rcx
test rax, 1
jz HaveLocalModule
PATCHABLE_INLINE_GETAPPDOMAIN rax, JIT_GetSharedNonGCStaticBase__PatchTLSLabel
; Get the LocalModule, rcx will always be odd, so: rcx * 4 - 4 <=> (rcx >> 1) * 8
mov rax, [rax + OFFSETOF__AppDomain__m_sDomainLocalBlock + OFFSETOF__DomainLocalBlock__m_pModuleSlots]
mov rax, [rax + rcx * 4 - 4]
HaveLocalModule:
; If class is not initialized, bail to C++ helper
test byte ptr [rax + OFFSETOF__DomainLocalModule__m_pDataBlob + rdx], 1
jz CallHelper
REPRET
align 16
CallHelper:
; Tail call JIT_GetSharedNonGCStaticBase_Helper
mov rcx, rax
jmp JIT_GetSharedNonGCStaticBase_Helper
LEAF_END JIT_GetSharedNonGCStaticBase_InlineGetAppDomain, _TEXT
LEAF_ENTRY JIT_GetSharedNonGCStaticBaseNoCtor_InlineGetAppDomain, _TEXT
; Check if rcx (moduleDomainID) is not a moduleID
mov rax, rcx
test rax, 1
jz HaveLocalModule
PATCHABLE_INLINE_GETAPPDOMAIN rax, JIT_GetSharedNonGCStaticBaseNoCtor__PatchTLSLabel
; Get the LocalModule, rcx will always be odd, so: rcx * 4 - 4 <=> (rcx >> 1) * 8
mov rax, [rax + OFFSETOF__AppDomain__m_sDomainLocalBlock + OFFSETOF__DomainLocalBlock__m_pModuleSlots]
mov rax, [rax + rcx * 4 - 4]
ret
align 16
HaveLocalModule:
REPRET
LEAF_END JIT_GetSharedNonGCStaticBaseNoCtor_InlineGetAppDomain, _TEXT
LEAF_ENTRY JIT_GetSharedGCStaticBase_InlineGetAppDomain, _TEXT
; Check if rcx (moduleDomainID) is not a moduleID
mov rax, rcx
test rax, 1
jz HaveLocalModule
PATCHABLE_INLINE_GETAPPDOMAIN rax, JIT_GetSharedGCStaticBase__PatchTLSLabel
; Get the LocalModule, rcx will always be odd, so: rcx * 4 - 4 <=> (rcx >> 1) * 8
mov rax, [rax + OFFSETOF__AppDomain__m_sDomainLocalBlock + OFFSETOF__DomainLocalBlock__m_pModuleSlots]
mov rax, [rax + rcx * 4 - 4]
HaveLocalModule:
; If class is not initialized, bail to C++ helper
test byte ptr [rax + OFFSETOF__DomainLocalModule__m_pDataBlob + rdx], 1
jz CallHelper
mov rax, [rax + OFFSETOF__DomainLocalModule__m_pGCStatics]
ret
align 16
CallHelper:
; Tail call Jit_GetSharedGCStaticBase_Helper
mov rcx, rax
jmp JIT_GetSharedGCStaticBase_Helper
LEAF_END JIT_GetSharedGCStaticBase_InlineGetAppDomain, _TEXT
LEAF_ENTRY JIT_GetSharedGCStaticBaseNoCtor_InlineGetAppDomain, _TEXT
; Check if rcx (moduleDomainID) is not a moduleID
mov rax, rcx
test rax, 1
jz HaveLocalModule
PATCHABLE_INLINE_GETAPPDOMAIN rax, JIT_GetSharedGCStaticBaseNoCtor__PatchTLSLabel
; Get the LocalModule, rcx will always be odd, so: rcx * 4 - 4 <=> (rcx >> 1) * 8
mov rax, [rax + OFFSETOF__AppDomain__m_sDomainLocalBlock + OFFSETOF__DomainLocalBlock__m_pModuleSlots]
mov rax, [rax + rcx * 4 - 4]
HaveLocalModule:
mov rax, [rax + OFFSETOF__DomainLocalModule__m_pGCStatics]
ret
LEAF_END JIT_GetSharedGCStaticBaseNoCtor_InlineGetAppDomain, _TEXT
end
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