Texas Instruments TMS320C54x User Manual page 255

Example 7–6. Copying a Section From ROM to RAM
;–––––––––––––––––––––––––––––––––––––––––––––––––––––––
; define a section to be copied from ROM to RAM
;–––––––––––––––––––––––––––––––––––––––––––––––––––––––
.sect ".fir"
.label fir_src
fir:
<code here>
.label fir_end
;–––––––––––––––––––––––––––––––––––––––––––––––––––––––
; copy .fir section from ROM into RAM
;–––––––––––––––––––––––––––––––––––––––––––––––––––––––
.text
STM fir_src, AR1
RPT #(fir_end – fir_src – 1)
MVDP *AR1+, fir
;–––––––––––––––––––––––––––––––––––––––––––––––––––––––
; jump to section, now in RAM
;–––––––––––––––––––––––––––––––––––––––––––––––––––––––
CALL fir
Linker Command File
/**************************************************/
/* PARTIAL LINKER COMMAND FILE FOR FIR EXAMPLE
/**************************************************/
MEMORY
{
PAGE 0 : ONCHIP :
PAGE 0 : PROG
PAGE 1 : DATA
}
SECTIONS
{
.text: load = PROG PAGE 0
.fir: load = DATA PAGE 1, run ONCHIP PAGE 0
}
Specifying a Section's Runtime Address
; load address of section
; run address of section
; code for the section
; load address of section end
; get load address
; copy address to program memory
origin = 0800h,
: origin = 02C00h, length = 0D200h
: origin = 0800h,
*/
length = 02400h
length = 0F800h
Linker Description 7-43