RedHat Toolchain for small chips

Emil Renner Berthing <[email protected]>
Newsgroups gmane.comp.hardware.texas-instruments.msp430.gcc.user
Message-ID <CANBLGcwfEJ==1D+zfKoBkiS1F8X_ZZmPUXqKQkZJDh6g6RAxtQ@mail.gmail.com>
Hi,

I just tried installing the new toolchain, r206599 from the GCC SVN and the
latest newlib from CVS.
However when I try to compile simple programs for small chips it seems just
the runtime takes up more SRAM than the chip has. Eg.

$ cat simple.c
#include <msp430.h>

static inline void delay(unsigned int n) {
  __asm__ __volatile__ (
      "1: \n"
      " dec %[n] \n"
      " jne 1b \n"
      : [n] "+r"(n));
}

int main(void) {
  WDTCTL = WDTPW | WDTHOLD; /* watchdog_off();       */
  P1DIR |= BIT0;            /* pin_mode_output(1.0); */

  while (1) {
    P1OUT |= BIT0;  /* pin_high(1.0); */
    delay(0xFFFF);
    P1OUT &= ~BIT0; /* pin_low(1.0);  */
    delay(0xFFFF);
  }
}
$ msp430-elf-gcc -mmcu=msp430g2231 -Os -static -Wall -Wextra simple.c -o
simple.elf
/usr/lib/gcc/msp430-elf/4.9.0/../../../../msp430-elf/bin/ld: simple.elf
section `.bss' will not fit in region `RAM'
/usr/lib/gcc/msp430-elf/4.9.0/../../../../msp430-elf/bin/ld: region `RAM'
overflowed by 16 bytes
collect2: error: ld returned 1 exit status

So am I doing something wrong or will it work eventually and I'm just being
impatient?

/Emil

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