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.globl objc_msg_lookup
.globl objc_msg_lookup_stret
.globl objc_msg_lookup_super
.globl objc_msg_lookup_super_stret

.section .text
objc_msg_lookup:
objc_msg_lookup_stret: /* FIXME */
.macro generate_lookup name not_found_handler
\name:
	cmp	r0, #0
	beq	ret_nil

	ldr	r2, [r0, #0]
	ldr	r2, [r2, #32]

lookup:
.main_\name:
#ifdef OF_SELUID24
	ldrb	r3, [r1, #2]
	ldr	r2, [r2, r3, lsl #2]
#endif
	ldrb	r3, [r1, #1]
	ldr	r2, [r2, r3, lsl #2]
	ldrb	r3, [r1, #0]
	ldr	r2, [r2, r3, lsl #2]

	cmp	r2, #0
	beq	objc_not_found_handler(PLT)
	beq	\not_found_handler(PLT)

	mov	r0, r2
	bx	lr

ret_nil:
	adr	r0, nil_method
	bx	lr
.type objc_msg_lookup, %function
.size objc_msg_lookup, .-objc_msg_lookup
.type \name, %function
.size \name, .-\name
.endm

objc_msg_lookup_super:
.macro generate_lookup_super name lookup
objc_msg_lookup_super_stret: /* FIXME */
\name:
	ldr	r2, [r0, #0]
	cmp	r0, #0
	beq	ret_nil

	ldr	r2, [r0, #4]
	ldr	r2, [r2, #32]

	b	lookup
.type objc_msg_lookup_super, %function
.size objc_msg_lookup_super, .-objc_msg_lookup_super
	b	.main_\lookup
.type \name, %function
.size \name, .-\name
.endm

generate_lookup objc_msg_lookup objc_not_found_handler
generate_lookup objc_msg_lookup_stret objc_not_found_handler_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:
	adr	r0, nil_method
	bx	lr

nil_method:
	mov	r0, #0
	bx	lr

#ifdef __linux__
.section .note.GNU-stack, "", %progbits
#endif
Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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