On Thu, Feb 11, 2010 at 12:27:04PM +0100, Brandon Fosdick wrote:
> Well, it looks like I spoke too soon.
>
> SDCC is still dumping some non-vector stuff in the GSINIT and HOME segments.
> I see how I could use the linker to relocate GSINIT* segments to someplace
> else (or modify the mcs51 library). But I don't see how to relocate
> __sdcc_program_startup from HOME to CSEG. It doesn't seem to be defined
> anywhere in the lib directory that was installed with SDCC.
It is defined in main (and thus will be in the code generator somewhere
I expect), and called from sdcc/device/lib/mcs51/crtstart.asm. I expect you
would meed to modify the code generator to do what you want (or modify
main.asm by hand).
vi main.asm
...
; global & static initialisations
;--------------------------------------------------------
.area HOME (CODE)
.area GSINIT (CODE)
.area GSFINAL (CODE)
.area GSINIT (CODE)
.globl __sdcc_gsinit_startup
.globl __sdcc_program_startup
.globl __start__stack
.globl __mcs51_genXINIT
.globl __mcs51_genXRAMCLEAR
.globl __mcs51_genRAMCLEAR
.area GSFINAL (CODE)
ljmp __sdcc_program_startup
;--------------------------------------------------------
; Home
;--------------------------------------------------------
.area HOME (CODE)
.area HOME (CODE)
__sdcc_program_startup:
lcall _main
; return from main will lock up
sjmp .
;--------------------------------------------------------
...
Peter Van Epp
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