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* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
.intel_syntax noprefix
.macro generate_lookup name not_found
.macro GENERATE_LOOKUP name notFound
\name:
test rcx, rcx
jz short ret_nil
testq %rcx, %rcx
jz returnNilMethod
bt ecx, 0
jc short .Ltagged_pointer_\name
testb $1, %cl
jnz .LtaggedPointer_\name
mov r8, [rcx]
mov r8, [r8+56]
movq (%rcx), %r8
movq 56(%r8), %r8
.Lmain_\name:
mov r10, rcx
mov r11, rdx
movq %rcx, %r10
movq %rdx, %r11
mov rax, [rdx]
movzx ecx, ah
movzx edx, al
movq (%rdx), %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 0f
testq %rax, %rax
jz 0f
ret
0:
mov rcx, r10
mov rdx, r11
jmp \not_found
movq %r10, %rcx
movq %r11, %rdx
jmp \notFound
.Ltagged_pointer_\name:
xor rcx, objc_tagged_pointer_secret
and cl, 0xE
movzx r8, cl
.LtaggedPointer_\name:
xorq objc_taggedPointerSecret(%rip), %rcx
andb $0xE, %cl
movzbl %cl, %r8d
mov r8, [objc_tagged_pointer_classes+r8*4]
mov r8, [r8+56]
leaq objc_taggedPointerClasses(%rip), %rax
movq (%rax,%r8,4), %r8
movq 56(%r8), %r8
jmp short .Lmain_\name
jmp .Lmain_\name
.def \name
.scl 2
.type 32
.endef
.endm
.macro generate_lookup_super name lookup
.macro GENERATE_LOOKUP_SUPER name lookup
\name:
mov r8, rcx
mov rcx, [rcx]
test rcx, rcx
jz short ret_nil
mov r8, [r8+8]
mov r8, [r8+56]
jmp short .Lmain_\lookup
movq 8(%r8), %r8
movq 56(%r8), %r8
jmp .Lmain_\lookup
.def \name
.scl 2
.type 32
.endef
.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:
mov rax, offset nil_method
returnNilMethod:
leaq nilMethod(%rip), %rax
ret
nil_method:
xor rax, rax
nilMethod:
xorq %rax, %rax
ret
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