path: root/c/src/lib/libbsp/arm/nds/dswifi/common/source/spinlock.S

	.text

	.code 32


.GLOBL SLasm_Acquire, SLasm_Release
.ARM
SLasm_Acquire:
   ldr r2,[r0]
   cmp r2,#0
   movne r0,#1
   bxne lr
   mov	r2,r1
   swp r2,r2,[r0]
   cmp r2,#0
   cmpne r2,r1
   moveq r0,#0
   bxeq lr
   swp r2,r2,[r0]
   mov r0,#1
   bx lr



SLasm_Release:
   ldr r2,[r0]
   cmp r2,r1
   movne r0,#2
   bxne lr
   mov r2,#0
   swp r2,r2,[r0]
   cmp r2,r1
   moveq r0,#0
   movne r0,#2
   bx lr



	.pool
	.end