I am trying to port an "asm void function(){}" in a C file from CW to KSDK. The latter half of the converted function is below. However I am getting a branch out of range error for the second instruction, the "cbz r0,noshift". This is the only forward reference for any branch in the routine; the reverse references, such as the "bne shiftloop" don't have a problem. Actually, I would prefer to move the routine to a .S file and make it a pure assembly language routine and avoid the extra overhead at the beginning and end of the C routine, but then I have other problems with the assembler not recognizing several of the asm instructions that the compiler recognizes, such as push/pop {r0-r11,lr}.
| __asm("cbz | r0,noshift"); |
| __asm("ldr | r2,[sp,#2*4]"); |
| __asm("ldr | r0,[sp,#0]"); | |
| __asm("asr | r2,r2,#2"); |
shiftloop:
| __asm("ldr | r3,[r0,#8]"); |
| __asm("ldr | r4,[r0,#12]"); |
| __asm("str | r3,[r0,#0]"); |
| __asm("str | r4,[r0,#4]"); |
| __asm("add | r0,#8"); |
| __asm("sub | r2,#1"); |
| __asm("bne | shiftloop"); |
noshift:
| __asm("pop | {r0-r11,lr}"); |
| __asm("bx | lr"); |
}
