User`s guide

Libraries and Runtime Code

Runtime Initialization

331Targeting MC56F83xx/DSP5685x Controllers

section rtlib

XREF F_stack_addr

org p:

GLOBAL Finit_M56852_

SUBROUTINE "Finit_M56852_",Finit_M56852_,Finit_M56852END-

Finit_M56852_

Finit_M56852_:

;

; setup the OMr with the values required by C

;

bfset #NL_MODE,omr ; ensure NL=1 (enables nsted DO loops)

nop

bfclr #(CM_MODE|XP_MODE|R_MODE|SA_MODE),omr ; ensure CM=0

(optional for C)

; ensure XP=0 to enable harvard architecture

; ensure R=0 (required for C)

; ensure SA=0 (required for C)

; Setup the m01 register for linear addressing

move.w #-1,x0

moveu.w x0,m01 ; Set the m register to linear addressing

moveu.w hws,la ; Clear the hardware stack

moveu.w hws,la

nop

CALLMAIN: ; Initialize compiler environment

;Initialize the Stack

move.l #>>F_Lstack_addr,r0

bftsth #$0001,r0

bcc noinc

adda #1,r0