2009-05-16 14:30:12 UTC
Okay Liviu, then I could use a hand in doing so.
The startup file is as-is in the James Lynch´s demo. So is the linker script. I´ll paste a little of them here for comfort below.
My output listing shows that the startup is part of the text section, how could I make it into another section so I can control where it´s loaded? Or maybe a subsection in .text?
Thanks for the help!
Regards,
Alex
SECTIONS
{
. = 0; /* set location counter to address zero */
startup : { *(.startup)} >flash /* the startup code goes into FLASH */
.text : /* collect all sections that should go into FLASH after startup */
{
*(.text) /* all .text sections (code) */
*(.rodata) /* all .rodata sections (constants, strings, etc.) */
*(.rodata*) /* all .rodata* sections (constants, strings, etc.) */
*(.glue_7) /* all .glue_7 sections (no idea what these are) */
*(.glue_7t) /* all .glue_7t sections (no idea what these are) */
_etext = .; /* define a global symbol _etext just after the last code byte */
} >flash /* put all the above into FLASH */
... it follows
And ...
.text
.arm
.global Reset_Handler
.global _startup
.func _startup
_startup:
# Exception Vectors
_vectors: ldr PC, Reset_Addr
ldr PC, Undef_Addr
ldr PC, SWI_Addr
ldr PC, PAbt_Addr
ldr PC, DAbt_Addr
nop /* Reserved Vector (holds Philips ISP checksum) */
ldr PC, [PC,#-0xFF0] /* see page 71 of "Insiders Guide to the Philips ARM7-Based Microcontrollers" by Trevor Martin */
ldr PC, FIQ_Addr
