asm acquire/release

acquire.asm

.section ".text.<embassy_rp::critical_section_impl::RpSpinlockCs as critical_section::Impl>::acquire","ax",%progbits
	.p2align	1
	.type	<embassy_rp::critical_section_impl::RpSpinlockCs as critical_section::Impl>::acquire,%function
	.code	16
	.thumb_func
<embassy_rp::critical_section_impl::RpSpinlockCs as critical_section::Impl>::acquire:
	.fnstart
	.cfi_startproc
	.save	{r7, lr}
	push {r7, lr}
	.cfi_def_cfa_offset 8
	.cfi_offset lr, -4
	.cfi_offset r7, -8
	.setfp	r7, sp
	mov r7, sp
	.cfi_def_cfa_register r7
	mov.w r1, #-805306368
	movw r3, #65184
	ldr r0, [r1]
	mov.w r2, #256
	movt r3, #65535
	movw r12, :lower16:embassy_rp::critical_section_impl::LOCK_OWNER.0
	movt r12, :upper16:embassy_rp::critical_section_impl::LOCK_OWNER.0
	lsls r0, r0, #24
	it eq
	moveq.w r2, #512
	movw r0, #380
	movt r0, #53248
	str r2, [r0, r3]
	@APP
	mrs lr, primask
	@NO_APP
	ldr r2, [r1]
	ldab r1, [r12]
	adds r2, #1
	uxtb r3, r2
	cmp r1, r3
	itt eq
	moveq r0, #2
	popeq {r7, pc}
	and r3, lr, #1
	@APP
	cpsid i
	@NO_APP
.LBB146_2:
	@MEMBARRIER
	ldr r1, [r0]
	cbnz r1, .LBB146_6
	cbnz r3, .LBB146_5
	@MEMBARRIER
	@APP
	cpsie i
	@NO_APP
.LBB146_5:
	@APP
	cpsid i
	@NO_APP
	b .LBB146_2
.LBB146_6:
	eor r0, r3, #1
	strb.w r2, [r12]
	pop {r7, pc}

release.asm

.section .text._critical_section_1_0_release,"ax",%progbits
	.globl	_critical_section_1_0_release
	.p2align	1
	.type	_critical_section_1_0_release,%function
	.code	16
	.thumb_func
_critical_section_1_0_release:
	.fnstart
	.cfi_startproc
	movs r1, #36
	uxtb r2, r0
	movt r1, #53248
	cmp r2, #2
	beq .LBB150_3
	movw r2, :lower16:embassy_rp::critical_section_impl::LOCK_OWNER.0
	movs r3, #0
	movt r2, :upper16:embassy_rp::critical_section_impl::LOCK_OWNER.0
	lsls r0, r0, #24
	strb r3, [r2]
	mov.w r2, #1
	@MEMBARRIER
	str.w r2, [r1, #344]
	beq .LBB150_3
	@MEMBARRIER
	@APP
	cpsie i
	@NO_APP
.LBB150_3:
	mov.w r0, #-805306368
	ldr r0, [r0]
	lsls r0, r0, #24
	mov.w r0, #256
	it eq
	moveq.w r0, #512
	str r0, [r1]
	bx lr