// File: rossy[P]crossc/SPIRV-Cross/spirv_msl.cpp
// Function: spirv_cross::CompilerMSL::build_implicit_builtins()
void CompilerMSL::build_implicit_builtins()
{
	bool need_sample_pos = active_input_builtins.get(BuiltInSamplePosition);
	if (need_subpass_input || need_sample_pos)
	{
		bool has_frag_coord = false;
		bool has_sample_id = false;

		for (auto &id : ir.ids)
		{
			if (id.get_type() != TypeVariable)
				continue;

			auto &var = id.get<SPIRVariable>();

			if (need_subpass_input && var.storage == StorageClassInput && ir.meta[var.self].decoration.builtin &&
			    ir.meta[var.self].decoration.builtin_type == BuiltInFragCoord)
			{
				builtin_frag_coord_id = var.self;
				has_frag_coord = true;
				break;
			}

			if (need_sample_pos && var.storage == StorageClassInput && ir.meta[var.self].decoration.builtin &&
			    ir.meta[var.self].decoration.builtin_type == BuiltInSampleId)
			{
				builtin_sample_id_id = var.self;
				has_sample_id = true;
				break;
			}
		}

		if (!has_frag_coord && need_subpass_input)
		{
			uint32_t offset = ir.increase_bound_by(3);
			uint32_t type_id = offset;
			uint32_t type_ptr_id = offset + 1;
			uint32_t var_id = offset + 2;

			// Create gl_FragCoord.
			SPIRType vec4_type;
			vec4_type.basetype = SPIRType::Float;
			vec4_type.width = 32;
			vec4_type.vecsize = 4;
			set<SPIRType>(type_id, vec4_type);

			SPIRType vec4_type_ptr;
			vec4_type_ptr = vec4_type;
			vec4_type_ptr.pointer = true;
			vec4_type_ptr.parent_type = type_id;
			vec4_type_ptr.storage = StorageClassInput;
			auto &ptr_type = set<SPIRType>(type_ptr_id, vec4_type_ptr);
			ptr_type.self = type_id;

			set<SPIRVariable>(var_id, type_ptr_id, StorageClassInput);
			set_decoration(var_id, DecorationBuiltIn, BuiltInFragCoord);
			builtin_frag_coord_id = var_id;
		}

		if (!has_sample_id && need_sample_pos)
		{
			uint32_t offset = ir.increase_bound_by(3);
			uint32_t type_id = offset;
			uint32_t type_ptr_id = offset + 1;
			uint32_t var_id = offset + 2;

			// Create gl_SampleID.
			SPIRType uint_type;
			uint_type.basetype = SPIRType::UInt;
			uint_type.width = 32;
			set<SPIRType>(type_id, uint_type);

			SPIRType uint_type_ptr;
			uint_type_ptr = uint_type;
			uint_type_ptr.pointer = true;
			uint_type_ptr.parent_type = type_id;
			uint_type_ptr.storage = StorageClassInput;
			auto &ptr_type = set<SPIRType>(type_ptr_id, uint_type_ptr);
			ptr_type.self = type_id;

			set<SPIRVariable>(var_id, type_ptr_id, StorageClassInput);
			set_decoration(var_id, DecorationBuiltIn, BuiltInSampleId);
			builtin_sample_id_id = var_id;
		}
	}

	if (msl_options.swizzle_texture_samples && has_sampled_images)
	{
		uint32_t offset = ir.increase_bound_by(5);
		uint32_t type_id = offset;
		uint32_t type_arr_id = offset + 1;
		uint32_t struct_id = offset + 2;
		uint32_t struct_ptr_id = offset + 3;
		uint32_t var_id = offset + 4;

		// Create a buffer to hold the swizzle constants.
		SPIRType uint_type;
		uint_type.basetype = SPIRType::UInt;
		uint_type.width = 32;
		set<SPIRType>(type_id, uint_type);

		SPIRType uint_type_arr = uint_type;
		uint_type_arr.array.push_back(0);
		uint_type_arr.array_size_literal.push_back(true);
		uint_type_arr.parent_type = type_id;
		set<SPIRType>(type_arr_id, uint_type_arr);
		set_decoration(type_arr_id, DecorationArrayStride, 4);

		SPIRType struct_type;
		struct_type.basetype = SPIRType::Struct;
		struct_type.member_types.push_back(type_arr_id);
		auto &type = set<SPIRType>(struct_id, struct_type);
		type.self = struct_id;
		set_decoration(struct_id, DecorationBlock);
		set_name(struct_id, "spvAux");
		set_member_name(struct_id, 0, "swizzleConst");
		set_member_decoration(struct_id, 0, DecorationOffset, 0);

		SPIRType struct_type_ptr = struct_type;
		struct_type_ptr.pointer = true;
		struct_type_ptr.parent_type = struct_id;
		struct_type_ptr.storage = StorageClassUniform;
		auto &ptr_type = set<SPIRType>(struct_ptr_id, struct_type_ptr);
		ptr_type.self = struct_id;

		set<SPIRVariable>(var_id, struct_ptr_id, StorageClassUniform);
		set_name(var_id, "spvAuxBuffer");
		// This should never match anything.
		set_decoration(var_id, DecorationDescriptorSet, 0xFFFFFFFE);
		set_decoration(var_id, DecorationBinding, msl_options.aux_buffer_index);
		aux_buffer_id = var_id;
	}
}

// Assembly:
pushq %rbp
movq %rsp, %rbp
subq $0x880, %rsp            # imm = 0x880
movq %rdi, -0x8(%rbp)
movq -0x8(%rbp), %rdi
movq %rdi, -0x800(%rbp)
addq $0x2d0, %rdi            # imm = 0x2D0
movl $0x13, %esi
callq 0xef50
movb %al, %cl
movq -0x800(%rbp), %rax
andb $0x1, %cl
movb %cl, -0x9(%rbp)
testb $0x1, 0x398(%rax)
jne 0xf0d6d
testb $0x1, -0x9(%rbp)
je 0xf128c
movq -0x800(%rbp), %rax
movb $0x0, -0xa(%rbp)
movb $0x0, -0xb(%rbp)
addq $0x8, %rax
addq $0x18, %rax
movq %rax, -0x18(%rbp)
movq -0x18(%rbp), %rdi
callq 0xf940
movq %rax, -0x20(%rbp)
movq -0x18(%rbp), %rdi
callq 0xf970
movq %rax, -0x28(%rbp)
leaq -0x20(%rbp), %rdi
leaq -0x28(%rbp), %rsi
callq 0xf9a0
testb $0x1, %al
jne 0xf0db8
jmp 0xf0ef1
leaq -0x20(%rbp), %rdi
callq 0xf9e0
movq %rax, -0x30(%rbp)
movq -0x30(%rbp), %rdi
callq 0xfa00
cmpl $0x2, %eax
je 0xf0dd8
jmp 0xf0ee3
movq -0x30(%rbp), %rdi
callq 0xfd10
movq %rax, %rcx
movq -0x800(%rbp), %rax
movq %rcx, -0x38(%rbp)
testb $0x1, 0x398(%rax)
je 0xf0e6b
movq -0x38(%rbp), %rax
cmpl $0x1, 0x10(%rax)
jne 0xf0e6b
movq -0x800(%rbp), %rdi
addq $0x8, %rdi
addq $0x30, %rdi
movq -0x38(%rbp), %rax
movl 0x8(%rax), %eax
movl %eax, %esi
callq 0xead0
testb $0x1, 0xcc(%rax)
je 0xf0e6b
movq -0x800(%rbp), %rdi
addq $0x8, %rdi
addq $0x30, %rdi
movq -0x38(%rbp), %rax
movl 0x8(%rax), %eax
movl %eax, %esi
callq 0xead0
cmpl $0xf, 0xa0(%rax)
jne 0xf0e6b
movq -0x800(%rbp), %rax
movq -0x38(%rbp), %rcx
movl 0x8(%rcx), %ecx
movl %ecx, 0x7c0(%rax)
movb $0x1, -0xa(%rbp)
jmp 0xf0ef1
testb $0x1, -0x9(%rbp)
je 0xf0ee1
movq -0x38(%rbp), %rax
cmpl $0x1, 0x10(%rax)
jne 0xf0ee1
movq -0x800(%rbp), %rdi
addq $0x8, %rdi
addq $0x30, %rdi
movq -0x38(%rbp), %rax
movl 0x8(%rax), %eax
movl %eax, %esi
callq 0xead0
testb $0x1, 0xcc(%rax)
je 0xf0ee1
movq -0x800(%rbp), %rdi
addq $0x8, %rdi
addq $0x30, %rdi
movq -0x38(%rbp), %rax
movl 0x8(%rax), %eax
movl %eax, %esi
callq 0xead0
cmpl $0x12, 0xa0(%rax)
jne 0xf0ee1
movq -0x800(%rbp), %rax
movq -0x38(%rbp), %rcx
movl 0x8(%rcx), %ecx
movl %ecx, 0x7c4(%rax)
movb $0x1, -0xb(%rbp)
jmp 0xf0ef1
jmp 0xf0ee3
leaq -0x20(%rbp), %rdi
callq 0xfbd0
jmp 0xf0da2
testb $0x1, -0xa(%rbp)
jne 0xf10b1
movq -0x800(%rbp), %rax
testb $0x1, 0x398(%rax)
je 0xf10b1
movq -0x800(%rbp), %rdi
addq $0x8, %rdi
movl $0x3, %esi
callq 0x55780
movl %eax, -0x3c(%rbp)
movl -0x3c(%rbp), %eax
movl %eax, -0x40(%rbp)
movl -0x3c(%rbp), %eax
incl %eax
movl %eax, -0x44(%rbp)
movl -0x3c(%rbp), %eax
addl $0x2, %eax
movl %eax, -0x48(%rbp)
leaq -0x120(%rbp), %rdi
movq %rdi, -0x808(%rbp)
callq 0x31440
movq -0x800(%rbp), %rdi
movq -0x808(%rbp), %rdx
movl $0xa, -0x114(%rbp)
movl $0x20, -0x110(%rbp)
movl $0x4, -0x10c(%rbp)
movl -0x40(%rbp), %esi
callq 0xdeb40
jmp 0xf0f87
leaq -0x208(%rbp), %rdi
movq %rdi, -0x810(%rbp)
callq 0x31440
movq -0x810(%rbp), %rdi
leaq -0x120(%rbp), %rsi
callq 0x2f600
jmp 0xf0faf
movq -0x800(%rbp), %rdi
movb $0x1, -0x1a8(%rbp)
movl -0x40(%rbp), %eax
movl %eax, -0x16c(%rbp)
movl $0x1, -0x1a4(%rbp)
movl -0x44(%rbp), %esi
leaq -0x208(%rbp), %rdx
callq 0xdeb40
movq %rax, -0x818(%rbp)
jmp 0xf0fe8
movq -0x800(%rbp), %rdi
movq -0x818(%rbp), %rax
movq %rax, -0x210(%rbp)
movl -0x40(%rbp), %ecx
movq -0x210(%rbp), %rax
movl %ecx, 0x8(%rax)
movl -0x48(%rbp), %esi
movl $0x1, -0x214(%rbp)
leaq -0x44(%rbp), %rdx
leaq -0x214(%rbp), %rcx
callq 0xdeb90
jmp 0xf1029
movq -0x800(%rbp), %rdi
movl -0x48(%rbp), %esi
movl $0xb, %edx
movl $0xf, %ecx
callq 0x232d0
jmp 0xf1044
movq -0x800(%rbp), %rax
movl -0x48(%rbp), %ecx
movl %ecx, 0x7c0(%rax)
leaq -0x208(%rbp), %rdi
callq 0x314e0
leaq -0x120(%rbp), %rdi
callq 0x314e0
jmp 0xf10b1
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
jmp 0xf10a0
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
leaq -0x208(%rbp), %rdi
callq 0x314e0
leaq -0x120(%rbp), %rdi
callq 0x314e0
jmp 0xf184d
testb $0x1, -0xb(%rbp)
jne 0xf128a
testb $0x1, -0x9(%rbp)
je 0xf128a
movq -0x800(%rbp), %rdi
addq $0x8, %rdi
movl $0x3, %esi
callq 0x55780
movl %eax, -0x218(%rbp)
movl -0x218(%rbp), %eax
movl %eax, -0x21c(%rbp)
movl -0x218(%rbp), %eax
incl %eax
movl %eax, -0x220(%rbp)
movl -0x218(%rbp), %eax
addl $0x2, %eax
movl %eax, -0x224(%rbp)
leaq -0x300(%rbp), %rdi
movq %rdi, -0x820(%rbp)
callq 0x31440
movq -0x800(%rbp), %rdi
movq -0x820(%rbp), %rdx
movl $0x5, -0x2f4(%rbp)
movl $0x20, -0x2f0(%rbp)
movl -0x21c(%rbp), %esi
callq 0xdeb40
jmp 0xf114b
leaq -0x3d8(%rbp), %rdi
movq %rdi, -0x828(%rbp)
callq 0x31440
movq -0x828(%rbp), %rdi
leaq -0x300(%rbp), %rsi
callq 0x2f600
jmp 0xf1173
movq -0x800(%rbp), %rdi
movb $0x1, -0x378(%rbp)
movl -0x21c(%rbp), %eax
movl %eax, -0x33c(%rbp)
movl $0x1, -0x374(%rbp)
movl -0x220(%rbp), %esi
leaq -0x3d8(%rbp), %rdx
callq 0xdeb40
movq %rax, -0x830(%rbp)
jmp 0xf11b2
movq -0x800(%rbp), %rdi
movq -0x830(%rbp), %rax
movq %rax, -0x3e0(%rbp)
movl -0x21c(%rbp), %ecx
movq -0x3e0(%rbp), %rax
movl %ecx, 0x8(%rax)
movl -0x224(%rbp), %esi
movl $0x1, -0x3e4(%rbp)
leaq -0x220(%rbp), %rdx
leaq -0x3e4(%rbp), %rcx
callq 0xdeb90
jmp 0xf11fc
movq -0x800(%rbp), %rdi
movl -0x224(%rbp), %esi
movl $0xb, %edx
movl $0x12, %ecx
callq 0x232d0
jmp 0xf121a
movq -0x800(%rbp), %rax
movl -0x224(%rbp), %ecx
movl %ecx, 0x7c4(%rax)
leaq -0x3d8(%rbp), %rdi
callq 0x314e0
leaq -0x300(%rbp), %rdi
callq 0x314e0
jmp 0xf128a
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
jmp 0xf1279
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
leaq -0x3d8(%rbp), %rdi
callq 0x314e0
leaq -0x300(%rbp), %rdi
callq 0x314e0
jmp 0xf184d
jmp 0xf128c
movq -0x800(%rbp), %rax
testb $0x1, 0x7df(%rax)
je 0xf1844
movq -0x800(%rbp), %rax
testb $0x1, 0x934(%rax)
je 0xf1844
movq -0x800(%rbp), %rdi
addq $0x8, %rdi
movl $0x5, %esi
callq 0x55780
movl %eax, -0x3e8(%rbp)
movl -0x3e8(%rbp), %eax
movl %eax, -0x3ec(%rbp)
movl -0x3e8(%rbp), %eax
incl %eax
movl %eax, -0x3f0(%rbp)
movl -0x3e8(%rbp), %eax
addl $0x2, %eax
movl %eax, -0x3f4(%rbp)
movl -0x3e8(%rbp), %eax
addl $0x3, %eax
movl %eax, -0x3f8(%rbp)
movl -0x3e8(%rbp), %eax
addl $0x4, %eax
movl %eax, -0x3fc(%rbp)
leaq -0x4d8(%rbp), %rdi
movq %rdi, -0x838(%rbp)
callq 0x31440
movq -0x800(%rbp), %rdi
movq -0x838(%rbp), %rdx
movl $0x5, -0x4cc(%rbp)
movl $0x20, -0x4c8(%rbp)
movl -0x3ec(%rbp), %esi
callq 0xdeb40
jmp 0xf1358
leaq -0x5b0(%rbp), %rdi
leaq -0x4d8(%rbp), %rsi
callq 0x3d730
jmp 0xf136d
leaq -0x590(%rbp), %rdi
movl $0x0, -0x5b4(%rbp)
leaq -0x5b4(%rbp), %rsi
callq 0x113460
jmp 0xf138c
leaq -0x578(%rbp), %rdi
movl $0x1, %esi
callq 0x113490
jmp 0xf139f
movq -0x800(%rbp), %rdi
movl -0x3ec(%rbp), %eax
movl %eax, -0x514(%rbp)
movl -0x3f0(%rbp), %esi
leaq -0x5b0(%rbp), %rdx
callq 0xdeb40
jmp 0xf13c6
movq -0x800(%rbp), %rdi
movl -0x3f0(%rbp), %esi
movl $0x6, %edx
movl $0x4, %ecx
callq 0x232d0
jmp 0xf13e4
leaq -0x690(%rbp), %rdi
callq 0x31440
movl $0xc, -0x684(%rbp)
leaq -0x628(%rbp), %rdi
leaq -0x3f0(%rbp), %rsi
callq 0x88f0
jmp 0xf140f
movq -0x800(%rbp), %rdi
movl -0x3f4(%rbp), %esi
leaq -0x690(%rbp), %rdx
callq 0xdeb40
movq %rax, -0x840(%rbp)
jmp 0xf1431
movq -0x800(%rbp), %rdi
movq -0x840(%rbp), %rax
movq %rax, -0x698(%rbp)
movl -0x3f4(%rbp), %ecx
movq -0x698(%rbp), %rax
movl %ecx, 0x8(%rax)
movl -0x3f4(%rbp), %esi
movl $0x2, %edx
xorl %ecx, %ecx
callq 0x232d0
jmp 0xf146a
movl -0x3f4(%rbp), %eax
movl %eax, -0x84c(%rbp)
leaq -0x6b9(%rbp), %rdi
movq %rdi, -0x848(%rbp)
callq 0x7650
movq -0x848(%rbp), %rdx
leaq 0x59367(%rip), %rsi     # 0x14a7fe
leaq -0x6b8(%rbp), %rdi
callq 0x7520
jmp 0xf14a5
movl -0x84c(%rbp), %esi
movq -0x800(%rbp), %rdi
leaq -0x6b8(%rbp), %rdx
callq 0x22cd0
jmp 0xf14c0
leaq -0x6b8(%rbp), %rdi
callq 0x7708
leaq -0x6b9(%rbp), %rdi
callq 0x73d0
movl -0x3f4(%rbp), %eax
movl %eax, -0x85c(%rbp)
leaq -0x6e1(%rbp), %rdi
movq %rdi, -0x858(%rbp)
callq 0x7650
movq -0x858(%rbp), %rdx
leaq 0x59300(%rip), %rsi     # 0x14a805
leaq -0x6e0(%rbp), %rdi
callq 0x7520
jmp 0xf1513
movl -0x85c(%rbp), %esi
movq -0x800(%rbp), %rdi
xorl %edx, %edx
leaq -0x6e0(%rbp), %rcx
callq 0x22f90
jmp 0xf1530
leaq -0x6e0(%rbp), %rdi
callq 0x7708
leaq -0x6e1(%rbp), %rdi
callq 0x73d0
movq -0x800(%rbp), %rdi
movl -0x3f4(%rbp), %esi
movl $0x23, %ecx
xorl %r8d, %r8d
movl %r8d, %edx
callq 0x22f50
jmp 0xf1567
leaq -0x7c0(%rbp), %rdi
leaq -0x690(%rbp), %rsi
callq 0x3d730
jmp 0xf157c
movq -0x800(%rbp), %rdi
movb $0x1, -0x760(%rbp)
movl -0x3f4(%rbp), %eax
movl %eax, -0x724(%rbp)
movl $0x2, -0x75c(%rbp)
movl -0x3f8(%rbp), %esi
leaq -0x7c0(%rbp), %rdx
callq 0xdeb40
movq %rax, -0x868(%rbp)
jmp 0xf15bb
movq -0x800(%rbp), %rdi
movq -0x868(%rbp), %rax
movq %rax, -0x7c8(%rbp)
movl -0x3f4(%rbp), %ecx
movq -0x7c8(%rbp), %rax
movl %ecx, 0x8(%rax)
movl -0x3fc(%rbp), %esi
movl $0x2, -0x7cc(%rbp)
leaq -0x3f8(%rbp), %rdx
leaq -0x7cc(%rbp), %rcx
callq 0xdeb90
jmp 0xf1605
movl -0x3fc(%rbp), %eax
movl %eax, -0x874(%rbp)
leaq -0x7f1(%rbp), %rdi
movq %rdi, -0x870(%rbp)
callq 0x7650
movq -0x870(%rbp), %rdx
leaq 0x591e0(%rip), %rsi     # 0x14a812
leaq -0x7f0(%rbp), %rdi
callq 0x7520
jmp 0xf1640
movl -0x874(%rbp), %esi
movq -0x800(%rbp), %rdi
leaq -0x7f0(%rbp), %rdx
callq 0x22cd0
jmp 0xf165b
leaq -0x7f0(%rbp), %rdi
callq 0x7708
leaq -0x7f1(%rbp), %rdi
callq 0x73d0
movq -0x800(%rbp), %rdi
movl -0x3fc(%rbp), %esi
movl $0x22, %edx
movl $0xfffffffe, %ecx       # imm = 0xFFFFFFFE
callq 0x232d0
jmp 0xf1691
movq -0x800(%rbp), %rdi
movl -0x3fc(%rbp), %esi
movl 0x7d8(%rdi), %ecx
movl $0x21, %edx
callq 0x232d0
jmp 0xf16b0
movq -0x800(%rbp), %rax
movl -0x3fc(%rbp), %ecx
movl %ecx, 0x7c8(%rax)
leaq -0x7c0(%rbp), %rdi
callq 0x314e0
leaq -0x690(%rbp), %rdi
callq 0x314e0
leaq -0x5b0(%rbp), %rdi
callq 0x314e0
leaq -0x4d8(%rbp), %rdi
callq 0x314e0
jmp 0xf1844
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
jmp 0xf1836
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
jmp 0xf182a
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
jmp 0xf181e
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
jmp 0xf176f
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
leaq -0x6b8(%rbp), %rdi
callq 0x7708
leaq -0x6b9(%rbp), %rdi
callq 0x73d0
jmp 0xf181e
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
jmp 0xf17b2
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
leaq -0x6e0(%rbp), %rdi
callq 0x7708
leaq -0x6e1(%rbp), %rdi
callq 0x73d0
jmp 0xf181e
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
jmp 0xf1812
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
jmp 0xf1806
movq %rax, %rcx
movl %edx, %eax
movq %rcx, -0x128(%rbp)
movl %eax, -0x12c(%rbp)
leaq -0x7f0(%rbp), %rdi
callq 0x7708
leaq -0x7f1(%rbp), %rdi
callq 0x73d0
leaq -0x7c0(%rbp), %rdi
callq 0x314e0
leaq -0x690(%rbp), %rdi
callq 0x314e0
leaq -0x5b0(%rbp), %rdi
callq 0x314e0
leaq -0x4d8(%rbp), %rdi
callq 0x314e0
jmp 0xf184d
addq $0x880, %rsp            # imm = 0x880
popq %rbp
retq
movq -0x128(%rbp), %rdi
callq 0x7640
nopl (%rax)