Need help making minimal bare metal ARM Cortex-M D program
Mike
none at none.com
Sun Nov 24 04:42:59 PST 2013
I am very new to D, but I finally got my toolchain compiled and
working. I'm using LDC. I failed with GDC and eventually gave
up.
I am trying to get an _extremely_ minimal bare metal ARM Cortex-M
HelloWorld-type program compiled and executed on my STM32F4-based
hardware. I know the toochain is buggy for arm right now, but
I'm hoping I can do something about that if I can just get
started.
Here's the basic C code and linker script for my hardware. It
doesn't actually print "hello world". I intend to add that after
I get the following basic code compiled and downloaded to my
hardware.
/***************************
* start.c
****************************/
// defined in linker script
extern unsigned long _stack_end;
void handler_reset(void)
{
//Print hello world using SWI
}
__attribute__ ((section(".interrupt_vector")))
void (* const table_interrupt_vector[])(void) =
{
(void *) &_stack_end,
handler_reset
};
/***************************
* linkerscript.ld
****************************/
MEMORY
{
CCRAM (rxw) : ORIGIN = 0x10000000, LENGTH = 64k
SRAM (rxw) : ORIGIN = 0x20000000, LENGTH = 128k
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 1024k
}
SECTIONS
{
.ccm (NOLOAD) :
{
. = ALIGN(4);
*(.ccm)
. = ALIGN(4);
} >CCRAM
stackTop = ORIGIN(CCRAM) + LENGTH(CCRAM);
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