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/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018, 2019, 2020
* Jonathan Schleifer <js@nil.im>
.intel_syntax noprefix
test rdi, rdi
jz short ret_nil
testq %rdi, %rdi
jz ret_nil
bt edi, 0
jc short .Ltagged_pointer_\name
testb $1, %dil
jnz .Ltagged_pointer_\name
mov r8, [rdi]
mov r8, [r8+64]
movq (%rdi), %r8
movq 64(%r8), %r8
.Lmain_\name:
mov rax, [rsi]
movzx ecx, ah
movzx edx, al
movq (%rsi), %rax
movzbl %ah, %ecx
movzbl %al, %edx
#ifdef OF_SELUID24
shr eax, 16
shrl $16, %eax
mov r8, [r8+rax*8]
movq (%r8,%rax,8), %r8
#endif
mov r8, [r8+rcx*8]
mov rax, [r8+rdx*8]
movq (%r8,%rcx,8), %r8
movq (%r8,%rdx,8), %rax
test rax, rax
jz short \not_found@PLT
testq %rax, %rax
jz \not_found@PLT
ret
.Ltagged_pointer_\name:
mov rax, [rip+objc_tagged_pointer_secret@GOTPCREL]
xor rdi, [rax]
and dil, 0xE
movzx r8, dil
movq objc_tagged_pointer_secret@GOTPCREL(%rip), %rax
xorq (%rax), %rdi
andb $0xE, %dil
movzbl %dil, %r8d
mov rax, [rip+objc_tagged_pointer_classes@GOTPCREL]
mov r8, [rax+r8*4]
mov r8, [r8+64]
movq objc_tagged_pointer_classes@GOTPCREL(%rip), %rax
movq (%rax,%r8,4), %r8
movq 64(%r8), %r8
jmp short .Lmain_\name
jmp .Lmain_\name
.type \name, %function
.size \name, .-\name
.endm
.macro generate_lookup_super name lookup
\name:
mov r8, rdi
mov rdi, [rdi]
test rdi, rdi
jz short ret_nil
movq %rdi, %r8
movq (%rdi), %rdi
testq %rdi, %rdi
jz ret_nil
mov r8, [r8+8]
mov r8, [r8+64]
jmp short .Lmain_\lookup
movq 8(%r8), %r8
movq 64(%r8), %r8
jmp .Lmain_\lookup
.type \name, %function
.size \name, .-\name
.endm
generate_lookup objc_msg_lookup objc_method_not_found
generate_lookup objc_msg_lookup_stret objc_method_not_found_stret
generate_lookup_super objc_msg_lookup_super objc_msg_lookup
generate_lookup_super objc_msg_lookup_super_stret objc_msg_lookup_stret
ret_nil:
lea rax, [rip+nil_method]
leaq nil_method(%rip), %rax
ret
nil_method:
xor rax, rax
xorq %rax, %rax
ret
#ifdef OF_LINUX
.section .note.GNU-stack, "", %progbits
#endif
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