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* file.
*/
#include "config.h"
#include "platform.h"
.intel_syntax noprefix
.globl objc_msg_lookup
.globl objc_msg_lookup_stret
.globl objc_msg_lookup_super
.globl objc_msg_lookup_super_stret
.section .text
.macro generate_lookup name not_found
\name:
testq %rdi, %rdi
jz ret_nil
test rdi, rdi
jz short ret_nil
movq (%rdi), %r8
movq 64(%r8), %r8
mov r8, [rdi]
mov r8, [r8+64]
.Lmain_\name:
movq (%rsi), %rax
movzbl %ah, %ecx
movzbl %al, %edx
mov rax, [rsi]
movzx ecx, ah
movzx edx, al
#ifdef OF_SELUID24
shrl $16, %eax
shr eax, 16
movq (%r8,%rax,8), %r8
mov r8, [r8+rax*8]
#endif
movq (%r8,%rcx,8), %r8
movq (%r8,%rdx,8), %rax
mov r8, [r8+rcx*8]
mov rax, [r8+rdx*8]
testq %rax, %rax
jz \not_found@PLT
test rax, rax
jz short \not_found@PLT
ret
.type \name, %function
.size \name, .-\name
.endm
.macro generate_lookup_super name lookup
\name:
movq %rdi, %r8
movq (%rdi), %rdi
testq %rdi, %rdi
mov r8, rdi
mov rdi, [rdi]
test rdi, rdi
jz ret_nil
movq 8(%r8), %r8
movq 64(%r8), %r8
mov r8, [r8+8]
mov r8, [r8+64]
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:
leaq nil_method(%rip), %rax
lea rax, [rip+nil_method]
ret
nil_method:
xorq %rax, %rax
xor rax, rax
ret
#ifdef OF_LINUX
.section .note.GNU-stack, "", %progbits
#endif
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